/* ========================================
   LYDG Lighting - Front-end Stylesheet
   Dark Theme / Professional Lighting Company
   ======================================== */

/* ---------- Global Reset ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background: #0A0A0A;
    color: #fff;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Global responsive images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Rich content / article images — 确保自适应不被覆盖 */
.pd-rich-text img,
.pd-main-content img,
.article-content img {
    max-width: 100%;
    width: auto;
    height: auto !important;
    object-fit: contain;
}

/* Serif font for logo and large headings */
.font-serif,
.logo-text,
.footer-logo .logo-text {
    font-family: 'Georgia', 'Times New Roman', 'Noto Serif SC', serif;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul,
ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    outline: none;
}

/* Global focus reset - remove browser default outlines */
input:focus,
textarea:focus,
select:focus,
button:focus {
    outline: none;
    box-shadow: none;
}

::selection {
    background: #f5a623;
    color: #000;
}

/* ---------- Utility Classes ---------- */
.site-main {
    width: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

.text-center {
    text-align: center;
}

.text-yellow {
    color: #f5a623;
}

.text-gray {
    color: #999;
}

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-40 { margin-bottom: 40px; }

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 110px;
    background: #0A0A0A;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    flex-shrink: 0;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-img {
    height: 100px;
    width: 200px;
    object-fit: contain;
    display: block;
    background: #0A0A0A;
    padding: 4px 8px;
    border-radius: 4px;
}

.logo-text {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 4px;
    font-family: 'Georgia', 'Times New Roman', serif;
}

.logo-sub {
    font-size: 10px;
    color: #999;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.main-nav a {
    display: inline-block;
    padding: 8px 20px;
    font-size: 16px;
    color: #ccc;
    letter-spacing: 1.5px;
    position: relative;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #f5a623;
    transition: width 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: #fff;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 60%;
}

/* ========================================
   NAVIGATION DROPDOWN
   ======================================== */
.nav-item-dropdown {
    position: relative;
    display: inline-block;
}

.nav-item-dropdown > a {
    display: inline-block;
    padding: 8px 20px;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    white-space: nowrap;
}

.nav-item-dropdown > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #f5a623;
    transition: width 0.3s ease;
}

.nav-item-dropdown > a:hover,
.nav-item-dropdown > a.active {
    color: #fff;
}

.nav-item-dropdown > a:hover::after,
.nav-item-dropdown > a.active::after {
    width: 60%;
}

/* Invisible bridge to prevent dropdown from disappearing */
.nav-item-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 0;
}

/* Dropdown Panel */
.nav-dropdown-panel {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: -1px;
    min-width: 140px;
    background: #0A0A0A;
    border-radius: 0;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 1001;
    pointer-events: none;
    box-shadow: none !important;
    border: 0 none !important;
    outline: 0 !important;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    -webkit-appearance: none;
    appearance: none;
    text-align: center;
}

.nav-item-dropdown:hover .nav-dropdown-panel,
.nav-item-dropdown.open .nav-dropdown-panel {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Gold Triangle Arrow */
.nav-dropdown-arrow {
    display: none !important;
}

/* Dropdown Links */
.nav-dropdown-link {
    display: block;
    padding: 12px 30px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.88);
    text-decoration: none;
    white-space: nowrap;
    text-align: center;
    border: 0 none !important;
    outline: 0 !important;
    box-shadow: none !important;
    -webkit-appearance: none;
    appearance: none;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-dropdown-link:last-child {
    border-bottom: 0 none !important;
}

.nav-dropdown-link:hover {
    background: rgba(245, 166, 35, 0.15);
    color: #f5a623;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: #ccc;
    font-size: 18px;
    transition: color 0.3s ease;
    background: none;
}

.search-toggle:hover {
    color: #f5a623;
}

.search-toggle svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    padding: 8px;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    transition: all 0.3s ease;
}

/* Mobile Toggle (Hamburger) */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    position: relative;
    z-index: 1100;
}

.mobile-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    border-radius: 1px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Search Box Overlay */
.search-box {
    position: fixed;
    top: 110px;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    padding: 30px 0;
    z-index: 999;
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.search-box.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
}

.search-box .container {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-box input {
    flex: 1;
    height: 50px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 4px;
    padding: 0 20px;
    color: #fff;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.search-box input:focus {
    border-color: #f5a623;
    outline: none;
    box-shadow: none;
}

.search-box button {
    height: 50px;
    padding: 0 30px;
    background: #f5a623;
    color: #000;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.search-box button:hover {
    background: #e09520;
}

/* SEO H1 - visually hidden */
.seo-h1 {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ========================================
   HERO BANNER / SLIDER
   ======================================== */
.hero-banner {
    margin-top: 110px;
}

.banner-slider {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 36.36%;
    overflow: clip;
    background: #0A0A0A;
}

/* Dark gradient overlay for premium feel */
.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.15) 0%,
        rgba(0, 0, 0, 0.05) 40%,
        rgba(0, 0, 0, 0.1) 70%,
        rgba(0, 0, 0, 0.3) 100%
    );
    z-index: 2;
    pointer-events: none;
}

/* Banner Slogan */
.banner-slogan {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    font-size: 28px;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 8px;
    text-transform: uppercase;
    font-family: 'Georgia', 'Times New Roman', serif;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    white-space: nowrap;
}

.banner-tagline {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.45);
    letter-spacing: 2px;
    white-space: nowrap;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
}

/* ========================================
   BRAND INTRO SECTION
   ======================================== */
.section-brand-intro {
    padding: 80px 0;
}

.brand-intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.brand-intro-text .section-subtitle {
    font-size: 12px;
    color: #f5a623;
    letter-spacing: 4px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}

.brand-intro-text .section-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
}

.brand-intro-desc {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 2;
    margin-bottom: 12px;
}

.brand-intro-desc strong {
    color: #f5a623;
    font-weight: 600;
}

.brand-intro-slogan {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.5);
    font-style: italic;
    margin-top: 16px;
    margin-bottom: 24px;
    padding-left: 16px;
    border-left: 3px solid #f5a623;
    line-height: 1.8;
}

.brand-intro-link {
    display: inline-block;
    color: #f5a623;
    font-size: 14px;
    font-weight: 500;
    border-bottom: 1px solid rgba(245, 166, 35, 0.3);
    padding-bottom: 2px;
    transition: border-color 0.3s;
}

.brand-intro-link:hover {
    border-color: #f5a623;
}

.brand-intro-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.brand-stat {
    text-align: center;
    padding: 28px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    transition: border-color 0.3s;
}

.brand-stat:hover {
    border-color: rgba(245, 166, 35, 0.2);
}

.brand-stat-num {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: #f5a623;
    font-family: 'Georgia', 'Times New Roman', serif;
    line-height: 1.2;
}

.brand-stat-plus {
    font-size: 18px;
    font-weight: 400;
}

.brand-stat-label {
    display: block;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 8px;
}

/* ========================================
   SERVICE HIGHLIGHTS SECTION
   ======================================== */
.section-service-highlights {
    padding: 60px 0 80px;
}

.service-highlights-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.service-highlight-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.service-highlight-item:hover {
    border-color: rgba(245, 166, 35, 0.2);
    transform: translateY(-2px);
}

.service-highlight-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 166, 35, 0.08);
    border-radius: 4px;
}

.service-highlight-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.service-highlight-text strong {
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
}

.service-highlight-text span {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
}

/* ========================================
   FLOATING CONSULTATION BAR
   ======================================== */
.floating-consult-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    border-top: 1px solid rgba(245, 166, 35, 0.2);
    backdrop-filter: blur(10px);
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.floating-consult-bar.visible {
    transform: translateY(0);
}

.consult-bar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.consult-bar-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.consult-bar-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: #f5a623;
    text-decoration: none;
    letter-spacing: 1px;
}

.consult-bar-phone:hover {
    color: #e09520;
}

.consult-bar-btn {
    display: inline-block;
    padding: 8px 24px;
    background: #f5a623;
    color: #000;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    text-decoration: none;
    transition: background 0.3s;
}

.consult-bar-btn:hover {
    background: #e09520;
}

/* Banner Track & Slide */
.banner-track {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-color: transparent;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    pointer-events: none;
    display: block;
    text-decoration: none;
    z-index: 0;
}

.banner-slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 1;
}

.banner-slide[style*="display: none"] {
    display: none !important;
}

/* Banner Arrows */
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(4px);
}

.banner-arrow:hover {
    background: rgba(245, 166, 35, 0.6);
    color: #000;
}

.banner-prev {
    left: 30px;
}

.banner-next {
    right: 30px;
}

/* Banner Dots */
.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.banner-dot.active {
    background: #f5a623;
    transform: scale(1.2);
}

.banner-dot:hover {
    background: rgba(255, 255, 255, 0.6);
}

.banner-slider .slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.banner-slider .slide.active {
    opacity: 1;
}

.slide-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.7) 0%,
        rgba(0, 0, 0, 0.3) 50%,
        rgba(0, 0, 0, 0.5) 100%
    );
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 90%;
    max-width: 800px;
}

.slide-content h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 2px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.slide-content p {
    font-size: 18px;
    color: #ccc;
    margin-bottom: 30px;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.5);
}

.slide-content .btn {
    display: inline-block;
    padding: 14px 40px;
    background: #f5a623;
    color: #000;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.slide-content .btn:hover {
    background: #fff;
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 166, 35, 0.3);
}

.banner-slider .prev,
.banner-slider .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(4px);
}

.banner-slider .prev {
    left: 30px;
}

.banner-slider .next {
    right: 30px;
}

.banner-slider .prev:hover,
.banner-slider .next:hover {
    background: rgba(245, 166, 35, 0.6);
    color: #000;
}

.banner-slider .dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.banner-slider .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.banner-slider .dot.active {
    background: #f5a623;
    transform: scale(1.2);
}

.banner-slider .dot:hover {
    background: rgba(255, 255, 255, 0.6);
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
    text-align: center;
    margin: 60px 0 40px;
}

.section-header .en-title {
    font-size: 13px;
    text-transform: uppercase;
    color: #f5a623;
    letter-spacing: 3px;
    margin-bottom: 12px;
    font-weight: 400;
}

.section-header .cn-title {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.section-header .underline {
    width: 40px;
    height: 3px;
    background: #f5a623;
    margin: 0 auto 16px;
    border-radius: 2px;
}

.section-header .desc {
    font-size: 14px;
    color: #999;
    max-width: 600px;
    margin: 0 auto;
}

.section-header .section-subtitle {
    display: block;
    font-size: 13px;
    color: #f5a623;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 10px;
    font-weight: 400;
}

.section-header .section-title {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
    margin: 0;
}

/* Section Footer */
.section-footer {
    text-align: center;
    margin-top: 40px;
    padding-bottom: 20px;
}

/* Section Explore Link (bottom-left) */
.section-explore {
    margin-top: 30px;
    text-align: left;
}

.explore-link {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 1px;
    transition: all 0.3s ease;
    display: inline-block;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.explore-link:hover {
    color: #f5a623;
    border-bottom-color: #f5a623;
}

/* Cases Horizontal Scroll */
.section-cases {
    padding: 40px 0 60px;
}

.cases-scroll-wrapper {
    overflow: hidden;
    margin: 0 -20px;
    padding: 0 20px;
}

.cases-scroll-track {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 10px;
    scrollbar-width: none;
}

.cases-scroll-track::-webkit-scrollbar {
    display: none;
}

.case-card {
    flex: 0 0 320px;
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.4s ease;
    border-radius: 4px;
    overflow: hidden;
}

.case-card:hover {
    transform: translateY(-6px);
}

.case-card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #111;
}

.case-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-card-img img {
    transform: scale(1.07);
}

.case-card-img-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.case-card-info {
    padding: 14px 0;
}

.case-card-title {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.case-card:hover .case-card-title {
    color: #f5a623;
}

/* Home Empty Card */
.home-empty-card {
    text-align: center;
    padding: 60px 20px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 15px;
}

.home-product-empty {
    text-align: center;
    padding: 80px 20px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 15px;
}

/* General Buttons */
.btn {
    display: inline-block;
    padding: 12px 36px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
}

.btn-outline {
    background: transparent;
    color: #f5a623;
    border: 1px solid #f5a623;
}

.btn-outline:hover {
    background: #f5a623;
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 166, 35, 0.3);
}

.btn-primary {
    background: #f5a623;
    color: #000;
    border: 1px solid #f5a623;
}

.btn-primary:hover {
    background: #e09520;
    border-color: #e09520;
    transform: translateY(-2px);
}

/* ========================================
   HOMEPAGE PRODUCT CARDS (Large Horizontal)
   ======================================== */
.home-product-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.home-product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 320px;
    background: #111;
    overflow: hidden;
    text-decoration: none;
    color: #fff;
    transition: all 0.4s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.home-product-card:hover {
    background: #1a1a1a;
}

.home-product-card:nth-child(even) {
    direction: rtl;
}

.home-product-card:nth-child(even) > * {
    direction: ltr;
}

.home-product-img {
    width: 100%;
    height: 100%;
    min-height: 320px;
    overflow: hidden;
    background: #0a0a0a;
    display: flex;
    align-items: center;
    justify-content: center;
}

.home-product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.home-product-card:hover .home-product-img img {
    transform: scale(1.07);
}

.home-product-img-placeholder {
    width: 100%;
    height: 100%;
    min-height: 320px;
    background: #1a1a1a;
}

.home-product-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 50px;
}

.home-product-name {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.home-product-subtitle {
    font-size: 16px;
    color: #999;
    margin-bottom: 24px;
}

.home-product-specs {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.home-product-spec {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: #ccc;
}

.home-product-spec svg {
    flex-shrink: 0;
}

/* ========================================
   VIDEO GRID (Homepage & Video Page)
   ======================================== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.video-card {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.video-card:hover {
    transform: translateY(-4px);
}

.video-card-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
}

.video-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-card-cover img {
    transform: scale(1.07);
}

.video-card-cover-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.video-card:hover .video-play-btn {
    opacity: 1;
}

.video-card-title {
    font-size: 14px;
    color: #ccc;
    margin-top: 10px;
    line-height: 1.5;
    font-weight: 400;
}

/* Video Page Grid */
.video-page-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.video-page-card {
    cursor: pointer;
    transition: transform 0.4s ease;
}

.video-page-card:hover {
    transform: translateY(-6px);
}

.video-page-card-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
}

.video-page-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-page-card:hover .video-page-card-cover img {
    transform: scale(1.08);
}

.video-page-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111;
}

.video-page-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.video-page-card:hover .video-page-card-overlay {
    opacity: 1;
}

.video-page-play-btn {
    transition: transform 0.3s ease;
}

.video-page-card:hover .video-page-play-btn {
    transform: scale(1.1);
}

.video-page-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 12px;
    border-radius: 2px;
}

.video-page-card-title {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 12px;
    line-height: 1.5;
    font-weight: 400;
    transition: color 0.3s ease;
}

.video-page-card:hover .video-page-card-title {
    color: #f5a623;
}

/* Video Empty State */
.video-empty-state {
    text-align: center;
    padding: 100px 20px 60px;
}

.video-empty-icon {
    margin-bottom: 20px;
}

.video-empty-text {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 8px;
}

.video-empty-hint {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 50px;
}

.video-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.video-skeleton-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    overflow: hidden;
    border-radius: 4px;
}

.video-skeleton-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
}

.video-skeleton-text {
    height: 14px;
    margin: 12px 14px;
    width: 70%;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
    border-radius: 2px;
}

/* Video Modal */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.video-modal.active {
    display: flex;
}

.video-modal-mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 0;
    pointer-events: none;
}

.video-modal-body {
    position: relative;
    width: 90%;
    max-width: 900px;
    aspect-ratio: 16 / 9;
    z-index: 1;
}

.video-modal-content {
    width: 100%;
    height: 100%;
    border-radius: 4px;
    background: #000;
}

.video-modal-content iframe,
.video-modal-content video {
    width: 100%;
    height: 100%;
}

.video-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 32px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.3s;
}

.video-modal-close:hover {
    color: #fff;
}

/* ========================================
   SERIES GRID (Homepage)
   ======================================== */
.series-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.series-card {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: 4px;
    aspect-ratio: 4 / 3;
    text-decoration: none;
}

.series-card-img {
    width: 100%;
    height: 100%;
}

.series-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.series-card:hover .series-card-img img {
    transform: scale(1.07);
}

.series-card-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: center;
}

.series-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    text-align: center;
}

.series-card-name {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    letter-spacing: 1px;
}

/* ========================================
   NEWS GRID (Homepage & News Page)
   ======================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
}

.news-card:hover {
    transform: translateY(-4px);
}

.news-card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
}

.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-card-img img {
    transform: scale(1.07);
}

.news-card-img-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.news-card-info {
    padding: 12px 0;
}

.news-card-title {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 6px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.news-card:hover .news-card-title {
    color: #f5a623;
}

.news-card-date {
    font-size: 13px;
    color: #999;
}

/* News List (News Page) */
.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-list-item {
    display: flex;
    gap: 24px;
    padding: 28px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.news-list-item:first-child {
    padding-top: 0;
}

.news-list-item:hover {
    padding-left: 8px;
}

.news-list-img {
    flex-shrink: 0;
    width: 220px;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
}

.news-list-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-list-item:hover .news-list-img img {
    transform: scale(1.07);
}

.news-list-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111;
}

.news-list-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.news-list-title {
    font-size: 17px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 10px;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.news-list-item:hover .news-list-title {
    color: #f5a623;
}

.news-list-excerpt {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.8;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-list-date {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.25);
}

/* News Empty State */
.news-empty-state {
    text-align: center;
    padding: 100px 20px 60px;
    max-width: 600px;
    margin: 0 auto;
}

.news-empty-icon {
    margin-bottom: 20px;
}

.news-empty-text {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 8px;
}

.news-empty-hint {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 50px;
}

.news-skeleton-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.news-skeleton-item {
    display: flex;
    gap: 24px;
    padding: 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.news-skeleton-img {
    flex-shrink: 0;
    width: 180px;
    aspect-ratio: 16 / 10;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
    border-radius: 4px;
}

.news-skeleton-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

.news-skeleton-line {
    height: 14px;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
    border-radius: 2px;
}

.news-skeleton-line.w80 { width: 80%; }
.news-skeleton-line.w60 { width: 60%; }
.news-skeleton-line.w30 { width: 30%; }

/* ========================================
   SECTION GENERAL
   ======================================== */
.section {
    padding: 60px 0;
}

.section-products,
.section-videos,
.section-series,
.section-news {
    padding: 40px 0 60px;
}

.section-contact,
.section-search,
.section-download,
.section-news-list,
.section-video-list,
.section-case-list {
    padding: 40px 0 60px;
}

/* Case Grid */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.case-grid-card {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.4s ease;
}

.case-grid-card:hover {
    transform: translateY(-6px);
}

.case-grid-card-img {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #111;
    border-radius: 4px;
}

.case-grid-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-grid-card:hover .case-grid-card-img img {
    transform: scale(1.08);
}

.case-grid-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111;
}

.case-grid-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.case-grid-card:hover .case-grid-card-overlay {
    opacity: 1;
}

.case-grid-card-view {
    padding: 10px 24px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    color: #fff;
    font-size: 13px;
    letter-spacing: 2px;
    transition: all 0.3s ease;
}

.case-grid-card:hover .case-grid-card-view {
    border-color: #f5a623;
    color: #f5a623;
}

.case-grid-card-info {
    padding: 14px 0;
}

.case-grid-card-title {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 6px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.case-grid-card:hover .case-grid-card-title {
    color: #f5a623;
}

.case-grid-card-date {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
}

/* Case Empty State */
.case-empty-state {
    text-align: center;
    padding: 100px 20px 60px;
}

.case-empty-icon {
    margin-bottom: 20px;
}

.case-empty-text {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 8px;
}

.case-empty-hint {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 50px;
}

.case-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.case-skeleton-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    overflow: hidden;
    border-radius: 4px;
}

.case-skeleton-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
}

.case-skeleton-text {
    height: 14px;
    margin: 14px 16px;
    width: 60%;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
    border-radius: 2px;
}

.section-contact .container,
.section-search .container,
.section-download .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.section-product-index {
    padding: 0 0 60px;
    background: #0A0A0A;
}

/* 系列分类横向滚动标签 */
.product-tabs-scroll {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 0;
}

.product-tabs-track {
    display: flex;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.product-tabs-track::-webkit-scrollbar {
    display: none;
}

.product-tab {
    flex-shrink: 0;
    padding: 18px 28px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
}

.product-tab:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.03);
}

.product-tab.active {
    color: #fff;
    background: #f5a623;
    border-bottom-color: #f5a623;
}

/* 二级分类横向滚动标签 */
.product-subtabs-scroll {
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.product-subtabs-track {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.product-subtabs-track::-webkit-scrollbar {
    display: none;
}

.product-subtab {
    flex-shrink: 0;
    padding: 8px 20px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.product-subtab:hover {
    border-color: #f5a623;
    color: #f5a623;
}

.product-subtab.active {
    background: #f5a623;
    color: #000;
    border-color: #f5a623;
}

/* 搜索行 */
.product-search-row {
    padding: 24px 0;
}

.product-search-box {
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    overflow: hidden;
    background: transparent;
}

.product-search-box input {
    border: none;
    outline: none;
    padding: 10px 16px;
    font-size: 14px;
    color: #fff;
    background: transparent;
    width: 220px;
}

.product-search-box input:focus {
    outline: none;
    box-shadow: none;
}

.product-search-box input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.product-search-btn {
    border: none;
    background: transparent;
    padding: 10px 14px;
    cursor: pointer;
    color: #999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s;
}

.product-search-btn:hover {
    color: #f5a623;
}

/* 产品网格 */
.product-grid-product {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 10px 0 40px;
}

.product-grid-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 0;
    overflow: hidden;
    text-decoration: none;
    color: #fff;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.product-grid-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(-4px);
    border-color: rgba(245, 166, 35, 0.2);
}

.product-grid-card-img {
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    background: #111;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-grid-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-grid-card:hover .product-grid-card-img img {
    transform: scale(1.07);
}

.product-grid-card-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.product-grid-card-info {
    padding: 14px 16px;
    text-align: center;
}

.product-grid-card-name {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
    line-height: 1.4;
}

.product-grid-card-subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.4;
}

/* 产品空状态 */
.product-empty-state {
    text-align: center;
    padding: 80px 20px 40px;
}

.product-empty-icon {
    margin-bottom: 20px;
}

.product-empty-text {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 8px;
}

.product-empty-hint {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 40px;
}

.product-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.product-skeleton-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    overflow: hidden;
}

.skeleton-img {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
}

.skeleton-text {
    height: 14px;
    margin: 14px 16px;
    background: linear-gradient(110deg, rgba(255,255,255,0.02) 8%, rgba(255,255,255,0.04) 18%, rgba(255,255,255,0.02) 33%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite linear;
    border-radius: 2px;
}

@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   PRODUCT CARDS & GRID (OLD - used in series page)
   ======================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.product-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.product-card {
    background: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-decoration: none;
    color: inherit;
    display: block;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(245, 166, 35, 0.2);
}

.product-card-img {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #111;
}

.product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-card-img img {
    transform: scale(1.07);
}

.product-card-info {
    padding: 16px 20px;
}

.product-card-name {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
    transition: color 0.3s ease;
}

.product-card:hover .product-card-name {
    color: #f5a623;
}

.product-card-subtitle {
    font-size: 13px;
    color: #999;
}

.product-card .card-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.product-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .card-image img {
    transform: scale(1.07);
}

.product-card .card-content {
    padding: 20px;
}

.product-card .card-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 6px;
    transition: color 0.3s ease;
}

.product-card:hover .card-title {
    color: #f5a623;
}

.product-card .card-subtitle {
    font-size: 13px;
    color: #999;
    margin-bottom: 12px;
}

.product-card .card-link {
    font-size: 13px;
    color: #f5a623;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s ease;
}

.product-card:hover .card-link {
    gap: 10px;
}

/* ========================================
   PRODUCT DETAIL PAGE
   ======================================== */
.product-detail {
    padding: 40px 0 80px;
}

.product-detail .detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

/* Product Image Carousel */
.product-gallery {
    position: sticky;
    top: 100px;
}

.product-main-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 8px;
    background: #1a1a1a;
}

.product-thumbs {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.product-thumb {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0.4;
    transition: all 0.3s ease;
    flex-shrink: 0;
    border: 2px solid transparent;
}

.product-thumb.active,
.product-thumb:hover {
    opacity: 1;
    border-color: #f5a623;
}

/* Product Info */
.product-info .product-name {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.product-info .product-model {
    font-size: 14px;
    color: #999;
    margin-bottom: 20px;
}

.product-info .product-brief {
    font-size: 15px;
    color: #ccc;
    line-height: 1.8;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #333;
}

/* Features List */
.product-features {
    margin-bottom: 28px;
}

.product-features-title {
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.product-features-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.feature-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.feature-text {
    flex: 1;
}

/* Scene Tags */
.product-scene-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.scene-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(245, 166, 35, 0.06);
    border: 1px solid rgba(245, 166, 35, 0.15);
    border-radius: 4px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
}

.scene-tag:hover {
    border-color: rgba(245, 166, 35, 0.4);
    color: #f5a623;
}

/* Product Advantages Grid */
.product-advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.product-advantage-card {
    padding: 24px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s ease;
}

.product-advantage-card:hover {
    border-color: rgba(245, 166, 35, 0.2);
    transform: translateY(-3px);
}

.advantage-icon {
    margin-bottom: 12px;
}

.product-advantage-card h4 {
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 6px;
}

.product-advantage-card p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
}

/* Product Services Row */
.product-services-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.product-service-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.product-service-item:hover {
    border-color: rgba(245, 166, 35, 0.2);
}

.product-service-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 166, 35, 0.08);
    border-radius: 4px;
}

.product-service-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.product-service-text strong {
    font-size: 14px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
}

.product-service-text span {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
}

/* Technical Parameters Table */
.tech-params {
    margin-bottom: 30px;
}

.tech-params h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fff;
}

.tech-param-list {
    border-radius: 8px;
    overflow: hidden;
}

.tech-param-item {
    display: flex;
    padding: 14px 20px;
    font-size: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.tech-param-item:nth-child(odd) {
    background: #1a1a1a;
}

.tech-param-item:nth-child(even) {
    background: #141414;
}

.tech-param-item .param-label {
    width: 140px;
    flex-shrink: 0;
    color: #999;
    font-weight: 500;
}

.tech-param-item .param-value {
    color: #fff;
    flex: 1;
}

/* File Downloads */
.product-downloads {
    margin-bottom: 30px;
}

.product-downloads h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fff;
}

.download-group {
    margin-bottom: 16px;
}

.download-group-title {
    font-size: 13px;
    color: #999;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.download-items {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: #1a1a1a;
    border-radius: 6px;
    transition: background 0.3s ease;
}

.download-item:hover {
    background: #222;
}

.download-item .file-name {
    font-size: 14px;
    color: #ccc;
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-item .file-name svg {
    width: 16px;
    height: 16px;
    fill: #f5a623;
    flex-shrink: 0;
}

.download-item .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    background: #f5a623;
    color: #000;
    font-size: 12px;
    font-weight: 600;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.download-item .btn-download:hover {
    background: #e09520;
}

/* ========================================
   NEWS / VIDEO / CASE CARDS
   ======================================== */
.news-grid,
.video-grid,
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.news-card,
.video-card,
.case-card {
    background: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.news-card:hover,
.video-card:hover,
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.card-image-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.card-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .card-image-wrap img,
.video-card:hover .card-image-wrap img,
.case-card:hover .card-image-wrap img {
    transform: scale(1.07);
}

.card-image-wrap .overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    pointer-events: none;
}

.video-card .card-image-wrap .play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(245, 166, 35, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.video-card .card-image-wrap .play-icon svg {
    width: 20px;
    height: 20px;
    fill: #000;
    margin-left: 3px;
}

.video-card:hover .card-image-wrap .play-icon {
    transform: translate(-50%, -50%) scale(1.1);
}

.card-body {
    padding: 20px;
}

.card-body .card-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.news-card:hover .card-title,
.video-card:hover .card-title,
.case-card:hover .card-title {
    color: #f5a623;
}

.card-body .card-date {
    font-size: 13px;
    color: #999;
}

.card-body .card-excerpt {
    font-size: 14px;
    color: #999;
    line-height: 1.6;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========================================
   NEWS / VIDEO DETAIL
   ======================================== */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0 80px;
}

.article-detail .article-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
}

.article-detail .article-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: #999;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #222;
}

.article-detail .article-content {
    font-size: 16px;
    line-height: 1.9;
    color: #ccc;
}

.article-detail .article-content p {
    margin-bottom: 20px;
}

.article-detail .article-content img {
    border-radius: 8px;
    margin: 20px 0;
    max-width: 100%;
    height: auto;
}

/* ========================================
   PAGINATION
   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 50px 0 30px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    font-size: 14px;
    color: #ccc;
    transition: all 0.3s ease;
}

.pagination a:hover {
    border-color: #f5a623;
    color: #f5a623;
}

.pagination .active,
.pagination span.current {
    background: #f5a623;
    border-color: #f5a623;
    color: #000;
    font-weight: 600;
}

.pagination .disabled {
    opacity: 0.3;
    pointer-events: none;
}

/* ========================================
   DOWNLOAD CENTER
   ======================================== */
.download-center {
    padding: 40px 0 80px;
}

/* Tab Navigation */
/* ========================================
   DOWNLOAD / TECHNICAL SUPPORT PAGE
   ======================================== */
.dl-wrapper {
    max-width: 960px;
    margin: 0 auto;
}

/* Tabs */
.dl-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 32px;
    overflow-x: auto;
    scrollbar-width: none;
}

.dl-tabs::-webkit-scrollbar {
    display: none;
}

.dl-tab {
    padding: 16px 32px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.5);
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.dl-tab::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: transparent;
    transition: background 0.3s ease;
}

.dl-tab:hover {
    color: #fff;
}

.dl-tab.active {
    color: #f5a623;
}

.dl-tab.active::after {
    background: #f5a623;
}

/* Tab Content */
.dl-tab-content {
    display: none;
}

.dl-tab-content.active {
    display: block;
}

/* Lamp Table */
.lamp-table-wrapper {
    overflow-x: auto;
    border-radius: 4px;
}

.lamp-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.lamp-table thead {
    background: rgba(255, 255, 255, 0.03);
}

.lamp-table th {
    padding: 14px 16px;
    font-size: 13px;
    font-weight: 600;
    color: #f5a623;
    text-align: center;
    white-space: nowrap;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.lamp-table th:first-child {
    text-align: left;
}

.lamp-table td {
    padding: 14px 16px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    text-align: center;
}

.lamp-table .lamp-product-name {
    text-align: left;
    font-weight: 500;
    color: #fff;
    white-space: nowrap;
}

.lamp-table tbody tr:hover {
    background: rgba(245, 166, 35, 0.04);
}

.lamp-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.015);
}

.lamp-table tbody tr:nth-child(even):hover {
    background: rgba(245, 166, 35, 0.04);
}

.lamp-na {
    color: rgba(255, 255, 255, 0.15);
}

.dl-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 14px;
    background: #f5a623;
    color: #000;
    font-size: 12px;
    font-weight: 600;
    border-radius: 3px;
    text-decoration: none;
    transition: background 0.3s ease;
}

.dl-btn:hover {
    background: #e09520;
}

/* File Grid */
.dl-file-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dl-file-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.dl-file-card:hover {
    border-color: rgba(245, 166, 35, 0.2);
    background: rgba(255, 255, 255, 0.03);
}

.dl-file-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 166, 35, 0.06);
    border-radius: 4px;
}

.dl-file-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dl-file-name {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dl-file-meta {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
}

.dl-file-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: transparent;
    color: #f5a623;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid rgba(245, 166, 35, 0.3);
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.dl-file-btn:hover {
    background: #f5a623;
    color: #000;
    border-color: #f5a623;
}
.dl-file-btns {
    display: flex;
    flex-shrink: 0;
    gap: 6px;
    flex-wrap: wrap;
}
.dl-file-btns .dl-file-btn {
    padding: 6px 12px;
    font-size: 12px;
}

/* Download Empty State */
.dl-empty {
    text-align: center;
    padding: 80px 20px;
}

.dl-empty-icon {
    margin-bottom: 16px;
}

.dl-empty-text {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 6px;
}

.dl-empty-hint {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.2);
}

/* ========================================
   CONTACT PAGE
   ======================================== */
/* Map Section */
.section-map {
    padding: 0 0 40px;
}

.map-wrapper {
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.map-wrapper iframe {
    display: block;
    width: 100%;
    height: 400px;
    filter: brightness(0.85) contrast(1.1);
}

/* Contact Layout */
.section-contact {
    padding: 40px 0 80px;
}

.contact-layout {
    max-width: 900px;
    margin: 0 auto;
}

/* Message Section */
.section-message {
    padding: 60px 0 80px;
    background: #111;
}

.section-message .contact-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

/* Contact Info */
.contact-info-title {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.contact-info-subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.2);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 32px;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    background: rgba(245, 166, 35, 0.08);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-top: 2px;
}

.contact-info-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    display: block;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.contact-info-value {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    display: block;
    line-height: 1.8;
}

/* Contact Form */
.contact-form-wrapper {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    padding: 36px;
}

.contact-form-title {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.contact-form-subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.2);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 28px;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form .form-group {
    margin-bottom: 16px;
}

.contact-form .form-label {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 8px;
}

.contact-form .required {
    color: #e74c3c;
    margin-left: 2px;
}

.contact-form .form-input,
.contact-form .form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: #fff;
    font-size: 14px;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.contact-form .form-input::placeholder,
.contact-form .form-textarea::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.contact-form .form-input:focus,
.contact-form .form-textarea:focus {
    border-color: #f5a623;
    outline: none;
    box-shadow: none;
}

.contact-form .form-textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-submit-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: #f5a623;
    color: #000;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 2px;
    margin-top: 8px;
}

.contact-submit-btn:hover {
    background: #e09520;
    box-shadow: 0 6px 20px rgba(245, 166, 35, 0.3);
}

.contact-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.contact-phone-link,
.contact-email-link {
    color: #f5a623;
    text-decoration: none;
    transition: color 0.3s;
}

.contact-phone-link:hover,
.contact-email-link:hover {
    color: #e09520;
    text-decoration: underline;
}

.contact-phone-link + .contact-phone-link {
    margin-left: 12px;
}

.contact-form-promise {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

/* Contact QR Code Section */
.contact-qrcode-section {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 60px;
    padding-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.contact-qrcode-group {
    text-align: center;
}

.contact-qrcode-list {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.contact-qrcode-item {
    width: 150px;
    background: #1a1a1a;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact-qrcode-item img {
    width: 150px;
    height: 150px;
    object-fit: contain;
    display: block;
}

.contact-qrcode-name {
    margin: 8px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    font-weight: 500;
}

.contact-qrcode-label {
    margin-top: 12px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 2px;
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
    background: #0A0A0A;
    padding: 60px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-top {
    text-align: center;
    padding-bottom: 40px;
}

.footer-brand {
    margin-bottom: 24px;
}

.footer-logo {
    display: inline-block;
    margin-bottom: 8px;
}

.footer-logo .logo-text {
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 6px;
    font-family: 'Georgia', 'Times New Roman', 'Noto Serif SC', serif;
}

.footer-slogan {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.footer-company {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 6px;
}

.footer-slogan-text {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.3);
    font-style: italic;
}

.footer-contact-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

.footer-contact-item a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-contact-item a:hover {
    color: #f5a623;
}

.footer-contact-item svg {
    flex-shrink: 0;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
    margin-bottom: 24px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    color: #888;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: rgba(245, 166, 35, 0.15);
    color: #f5a623;
}

.footer-social a svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.footer-social .wechat-qr-trigger {
    position: relative;
}
.wechat-qr-popup {
    display: none;
    position: absolute;
    bottom: 52px;
    left: 50%;
    margin-left: -65px;
    width: 130px;
    background: #fff;
    padding: 8px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    z-index: 9999;
}
.wechat-qr-trigger:hover .wechat-qr-popup {
    display: block;
}
.wechat-qr-popup img {
    width: 114px;
    height: 114px;
    display: block;
    border-radius: 4px;
}

/* Footer Search */
.footer-search {
    display: flex;
    justify-content: center;
    margin-bottom: 0;
}

.footer-search-form {
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    overflow: hidden;
    background: transparent;
}

.footer-search-input {
    border: none;
    outline: none;
    padding: 10px 16px;
    font-size: 13px;
    color: #fff;
    background: transparent;
    width: 200px;
}

.footer-search-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.footer-search-input:focus {
    outline: none;
    box-shadow: none;
}

.footer-search-btn {
    border: none;
    background: transparent;
    padding: 10px 14px;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-search-btn:hover {
    color: #f5a623;
}

/* Footer Divider */
.footer-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.06);
    margin: 0;
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
}

.footer-info {
    margin-bottom: 12px;
}

.footer-address,
.footer-phone {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
    margin-bottom: 4px;
}

.footer-copyright p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.25);
}

/* ========================================
   BREADCRUMB
   ======================================== */
.breadcrumb {
    font-size: 13px;
    text-align: right;
}

.breadcrumb a {
    color: #888;
    transition: color 0.3s ease;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #f5a623;
}

.breadcrumb .separator {
    color: #666;
    font-size: 10px;
}

.breadcrumb .current {
    color: #ccc;
}

/* ========================================
   PAGE BANNER
   ======================================== */
.page-banner {
    height: 520px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #0A0A0A;
    background-size: cover;
    background-position: center;
    margin-top: 110px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* 完整展示背景图模式 */
.page-banner--fullbg {
    height: auto;
    min-height: 400px;
    padding: 0;
}

.page-banner--fullbg .page-banner-inner,
.page-banner--fullbg .page-banner-breadcrumb {
    position: absolute;
    z-index: 2;
}

.page-banner-bg-img {
    display: block;
    width: 100%;
    height: auto;
    min-height: 400px;
    object-fit: cover;
    object-position: center;
    opacity: 0.85;
    position: relative;
}

.page-banner .banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.page-banner .banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(10, 10, 10, 0.7), rgba(10, 10, 10, 0.9));
}

.page-banner .banner-title {
    position: relative;
    z-index: 1;
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 6px;
}

/* Page Banner - Inner Pages */
.page-banner-inner {
    text-align: center;
    z-index: 1;
}

.page-banner--fullbg .page-banner-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.page-banner-title {
    font-size: 52px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 8px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

/* Banner内面包屑 - 右下角 */
.page-banner-breadcrumb {
    position: absolute;
    bottom: 28px;
    right: 50px;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    z-index: 2;
}

.page-banner-breadcrumb a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-banner-breadcrumb a:hover {
    color: #f5a623;
}

.page-banner-breadcrumb span {
    color: rgba(255,255,255,0.9);
}

/* Breadcrumb */
.page-banner .breadcrumb {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    margin-top: 0;
}

.page-banner .breadcrumb a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    transition: color 0.3s;
}

.page-banner .breadcrumb a:hover {
    color: #f5a623;
}

.page-banner .breadcrumb span {
    color: rgba(255, 255, 255, 0.35);
    font-size: 13px;
}

/* ========================================
   ABOUT PAGE
   ======================================== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 60px 0;
}

.about-intro .intro-content h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
}

.about-intro .intro-content p {
    font-size: 15px;
    color: #ccc;
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-intro .intro-image {
    border-radius: 8px;
    overflow: hidden;
}

.about-intro .intro-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

/* About Page - Section Headers */
.section-subtitle {
    display: block;
    font-size: 13px;
    color: #f5a623;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 8px;
    font-weight: 600;
}

.section-title {
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0;
}

/* About Page - New Sections */
.section-about-profile,
.section-about-vision,
.section-about-spirit {
    padding: 60px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.section-about-vision {
    background: rgba(245, 166, 35, 0.03);
}

.section-about-spirit {
    background: rgba(245, 166, 35, 0.05);
}

.section-about-spirit .about-text p {
    font-size: 16px;
    line-height: 2;
    color: #ddd;
    font-style: italic;
}

.about-text p {
    font-size: 15px;
    color: #bbb;
    line-height: 1.9;
    margin-bottom: 18px;
    text-indent: 2em;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

/* About Content - Centered Text */
.about-content-centered {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content-centered p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 2;
    margin-bottom: 20px;
    text-indent: 0;
}

.about-content-centered p:last-child {
    margin-bottom: 0;
}

.spirit-quote {
    font-size: 17px !important;
    color: rgba(255, 255, 255, 0.8) !important;
    line-height: 2.2 !important;
    font-style: italic;
    position: relative;
    padding: 0 20px;
}

.spirit-quote::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: -10px;
    font-size: 60px;
    color: rgba(245, 166, 35, 0.2);
    font-family: Georgia, serif;
    line-height: 1;
}

/* Factory Grid */
.section-about-factory {
    padding: 60px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.factory-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}

.factory-card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.factory-card-large {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
}

.factory-card-img {
    width: 100%;
    height: 100%;
    min-height: 200px;
    background: #111;
}

.factory-card-large .factory-card-img {
    min-height: 100%;
}

.factory-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.factory-card:hover .factory-card-img img {
    transform: scale(1.07);
}

.factory-card-placeholder {
    width: 100%;
    height: 100%;
    min-height: 200px;
    background: #111;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.factory-card-large .factory-card-placeholder {
    min-height: 100%;
}

.factory-card-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 16px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
}

/* Stats Section */
.section-about-stats {
    padding: 0;
    background: rgba(245, 166, 35, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 50px 0;
}

.stat-item {
    text-align: center;
    padding: 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: #f5a623;
    font-family: 'Georgia', 'Times New Roman', serif;
}

.stat-unit {
    font-size: 18px;
    color: #f5a623;
    font-weight: 400;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 8px;
}

/* Honors Section */
.section-about-honors {
    padding: 60px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.honors-placeholder-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.honor-placeholder-item {
    aspect-ratio: 3 / 2;
    border-radius: 4px;
    overflow: hidden;
}

.honor-placeholder-inner {
    width: 100%;
    height: 100%;
    background: #111;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
}

.honor-placeholder-inner span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.3);
}

/* Environment Section */
.section-about-environment {
    padding: 60px 0;
}

.env-placeholder-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.env-placeholder-item {
    aspect-ratio: 4 / 3;
    border-radius: 4px;
    overflow: hidden;
}

.env-placeholder-inner {
    width: 100%;
    height: 100%;
    background: #111;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
}

.env-placeholder-inner span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.3);
}

/* Margin Utilities */
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }

.about-images-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}

.about-image-item {
    border-radius: 6px;
    overflow: hidden;
}

.about-image-item img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.3s;
}

.about-image-item:hover img {
    transform: scale(1.05);
}

/* Honors Grid */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.honor-item {
    border-radius: 8px;
    overflow: hidden;
    background: #1a1a1a;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.honor-item:hover {
    border-color: rgba(245, 166, 35, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.honor-item img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.honor-item .honor-name {
    padding: 12px 14px;
    font-size: 13px;
    color: #ccc;
    text-align: center;
}

/* Environment Gallery */
.env-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.env-gallery .env-item {
    border-radius: 8px;
    overflow: hidden;
}

.env-gallery .env-item img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.env-gallery .env-item:hover img {
    transform: scale(1.07);
}

/* About Page - Overview Section */
.section-about-overview {
    padding: 60px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.about-table-wrapper {
    max-width: 800px;
    margin: 0 auto;
    border-radius: 4px;
    overflow: hidden;
}

.about-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.about-table td {
    padding: 14px 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    text-align: center;
}

.about-table-label {
    width: 140px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5) !important;
    background: rgba(255, 255, 255, 0.03);
    white-space: nowrap;
}

.about-table thead th {
    padding: 14px 20px;
    font-size: 13px;
    font-weight: 600;
    color: #f5a623;
    text-align: center;
    background: rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.about-table-series {
    font-weight: 600;
    color: #f5a623 !important;
    white-space: nowrap;
}

.about-table tbody tr:hover {
    background: rgba(245, 166, 35, 0.04);
}

.about-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.015);
}

/* Section Sub Header */
.section-sub-header {
    max-width: 800px;
    margin: 40px auto 20px;
    text-align: center;
}

.section-sub-title {
    font-size: 18px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}

.section-sub-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: #f5a623;
}

/* Organization Grid */
.about-org-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.about-org-item {
    padding: 14px 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s ease;
}

.about-org-item:hover {
    border-color: rgba(245, 166, 35, 0.3);
    color: #f5a623;
}

/* Certifications Grid */
.about-certs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}

.about-cert-card {
    padding: 28px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s ease;
}

.about-cert-card:hover {
    border-color: rgba(245, 166, 35, 0.2);
    transform: translateY(-4px);
}

.about-cert-icon {
    margin-bottom: 14px;
}

.about-cert-name {
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 6px;
}

.about-cert-desc {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
}

/* Certificate Grid - 证书展示板块 */
.about-cert-grid {
    display: flex;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
}

.about-cert-img-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    max-width: 400px;
    width: 100%;
}

.about-cert-img-card:hover {
    border-color: rgba(245, 166, 35, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.about-cert-card-img {
    width: 100%;
    aspect-ratio: 3 / 4;
    overflow: hidden;
}

.about-cert-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.about-cert-img-card:hover .about-cert-card-img img {
    transform: scale(1.07);
}

.about-cert-card-info {
    padding: 20px;
    text-align: center;
}

.about-cert-card-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 8px;
}

.about-cert-card-info p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

/* Light section variant */
.about-section-light .about-cert-img-card {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.08);
}

.about-section-light .about-cert-img-card:hover {
    border-color: rgba(245, 166, 35, 0.3);
}

.about-section-light .about-cert-card-info h3 {
    color: rgba(0, 0, 0, 0.9);
}

.about-section-light .about-cert-card-info p {
    color: rgba(0, 0, 0, 0.5);
}

/* Certificate Multi Grid - 多图证书展示 */
.about-certs-multi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 960px;
    margin: 0 auto;
}

.about-cert-multi-item {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.3s ease;
    cursor: pointer;
}

.about-cert-multi-item:hover {
    border-color: rgba(245, 166, 35, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.about-cert-multi-item img {
    width: 100%;
    display: block;
    transition: transform 0.3s ease;
}

.about-cert-multi-item:hover img {
    transform: scale(1.07);
}

/* Light section variant */
.about-section-light .about-cert-multi-item {
    border-color: rgba(0, 0, 0, 0.08);
}

.about-section-light .about-cert-multi-item:hover {
    border-color: rgba(245, 166, 35, 0.3);
}

/* 3列网格布局 */
.about-certs-grid-3col {
    grid-template-columns: repeat(3, 1fr);
}

/* About Service Grid */
.section-about-service {
    padding: 60px 0;
}

.about-service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.about-service-card {
    padding: 28px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s ease;
}

.about-service-card:hover {
    border-color: rgba(245, 166, 35, 0.2);
    transform: translateY(-3px);
}

.about-service-icon {
    margin-bottom: 14px;
}

.about-service-card h4 {
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 6px;
}

.about-service-card p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
}

/* Service Level Badges */
.service-level {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 600;
}

.service-level-a {
    background: rgba(245, 166, 35, 0.15);
    color: #f5a623;
}

.service-level-b {
    background: rgba(100, 180, 255, 0.12);
    color: #64b4ff;
}

.service-level-c {
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.5);
}

/* Company Stats */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 50px 0;
}

.stat-item {
    text-align: center;
}

.stat-item .stat-number {
    font-size: 42px;
    font-weight: 700;
    color: #f5a623;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-item .stat-unit {
    font-size: 16px;
    color: #f5a623;
}

.stat-item .stat-label {
    font-size: 14px;
    color: #999;
}

/* ========================================
   SEARCH RESULTS
   ======================================== */
.search-page {
    padding: 40px 0 80px;
}

.search-input-wrap {
    max-width: 600px;
    margin: 0 auto 40px;
}

.search-input-wrap .search-field {
    width: 100%;
    height: 56px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 0 60px 0 20px;
    color: #fff;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.search-input-wrap .search-field:focus {
    border-color: #f5a623;
}

.search-input-wrap .search-btn {
    position: absolute;
    right: 4px;
    top: 4px;
    height: 48px;
    padding: 0 24px;
    background: #f5a623;
    color: #000;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    transition: background 0.3s ease;
}

.search-input-wrap .search-btn:hover {
    background: #e09520;
}

.search-result-section {
    margin-bottom: 40px;
}

.search-result-section h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid #222;
}

.search-no-result {
    text-align: center;
    padding: 60px 0;
    color: #999;
    font-size: 16px;
}

/* ========================================
   SERIES / CATEGORY PAGE
   ======================================== */
.series-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.series-card {
    background: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.series-card:hover {
    border-color: rgba(245, 166, 35, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.series-card .series-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.series-card:hover .series-image {
    transform: scale(1.07);
}

.series-card .series-info {
    padding: 20px;
}

.series-card .series-name {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 6px;
}

.series-card .series-count {
    font-size: 13px;
    color: #999;
}

/* ========================================
   HOME - FEATURED SECTIONS
   ======================================== */
.home-section {
    padding: 60px 0;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.feature-row.reverse {
    direction: rtl;
}

.feature-row.reverse > * {
    direction: ltr;
}

.feature-row .feature-image {
    border-radius: 8px;
    overflow: hidden;
}

.feature-row .feature-image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.feature-row:hover .feature-image img {
    transform: scale(1.07);
}

.feature-row .feature-content h3 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-row .feature-content p {
    font-size: 15px;
    color: #999;
    line-height: 1.8;
    margin-bottom: 24px;
}

.btn-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border: 1px solid #f5a623;
    color: #f5a623;
    font-size: 14px;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.btn-more:hover {
    background: #f5a623;
    color: #000;
}

/* ========================================
   ABOUT VALUES / CULTURE
   ======================================== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.value-card {
    text-align: center;
    padding: 36px 24px;
    background: #1a1a1a;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.value-card:hover {
    border-color: rgba(245, 166, 35, 0.2);
    transform: translateY(-4px);
}

.value-card .value-icon {
    width: 56px;
    height: 56px;
    background: rgba(245, 166, 35, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.value-card .value-icon svg {
    width: 24px;
    height: 24px;
    fill: #f5a623;
}

.value-card .value-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}

.value-card .value-desc {
    font-size: 13px;
    color: #999;
    line-height: 1.7;
}

/* ========================================
   CTA / BANNER SECTIONS
   ======================================== */
.cta-banner {
    position: relative;
    padding: 80px 0;
    text-align: center;
    overflow: hidden;
    background: #111;
}

.cta-banner .cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.2;
}

.cta-banner .cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 10, 10, 0.9), rgba(26, 26, 26, 0.85));
}

.cta-banner .cta-content {
    position: relative;
    z-index: 1;
}

.cta-banner .cta-content h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-banner .cta-content p {
    font-size: 16px;
    color: #999;
    margin-bottom: 30px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   LOADING / EMPTY STATES
   ======================================== */
.empty-state {
    text-align: center;
    padding: 120px 20px;
}

.empty-state .empty-icon {
    font-size: 48px;
    color: rgba(255, 255, 255, 0.15);
    margin-bottom: 20px;
}

.empty-state .empty-icon svg {
    width: 64px;
    height: 64px;
    stroke: rgba(255, 255, 255, 0.15);
}

.empty-state .empty-text,
.empty-state p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.35);
    margin-bottom: 8px;
}

.empty-hint {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.2);
    margin-top: 8px;
}

.empty-state .btn {
    margin-top: 24px;
}

/* Search Page */
.search-form-wrapper {
    text-align: center;
    margin-bottom: 40px;
}

.search-form {
    display: inline-flex;
    gap: 12px;
    max-width: 600px;
    width: 100%;
}

.search-form-input {
    flex: 1;
    padding: 12px 16px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 4px;
    color: #fff;
    font-size: 15px;
    transition: border-color 0.3s;
}

.search-form-input:focus {
    border-color: #f5a623;
    outline: none;
}

.search-section {
    margin-bottom: 40px;
}

.search-section-title {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========================================
   MESSAGE SUCCESS / ALERT
   ======================================== */
.alert {
    padding: 14px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: rgba(46, 204, 113, 0.1);
    border: 1px solid rgba(46, 204, 113, 0.3);
    color: #2ecc71;
}

.alert-error {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.3);
    color: #e74c3c;
}

.alert-warning {
    background: rgba(245, 166, 35, 0.1);
    border: 1px solid rgba(245, 166, 35, 0.3);
    color: #f5a623;
}

/* ========================================
   BACK TO TOP
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: #f5a623;
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 900;
    box-shadow: 0 4px 15px rgba(245, 166, 35, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(245, 166, 35, 0.4);
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* ========================================
   HOME PAGE - NEW LAYOUT STYLES
   ======================================== */

/* Header Lang Indicator */
.lang-indicator {
    display: flex;
    align-items: center;
    color: #ccc;
    cursor: default;
}

.lang-indicator svg {
    width: 20px;
    height: 20px;
}

/* Banner Content Overlay */
.banner-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px 60px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    z-index: 5;
}

.banner-content-title {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: 2px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}

.banner-content-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 1px;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
}

/* Product Carousel */
.home-product-carousel {
    position: relative;
    overflow: visible;
}

.home-product-track {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 10px 0 60px;
}

.home-product-track::-webkit-scrollbar {
    display: none;
}

.home-product-card-new {
    flex: 0 0 calc(33.333% - 14px);
    min-width: 300px;
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
}

.home-product-card-new:hover {
    transform: translateY(-4px);
}

.home-product-card-inner {
    background: #1a1a1a;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.home-product-card-top {
    padding: 24px 24px 16px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.home-product-card-name {
    font-size: 16px;
    font-weight: 600;
    color: #f5a623;
    margin-bottom: 4px;
    line-height: 1.4;
}

.home-product-card-subtitle {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 14px;
}

.home-product-card-specs {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.home-product-card-spec {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.home-product-card-spec svg {
    flex-shrink: 0;
}

.home-product-card-img {
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    background: #111;
    display: flex;
    align-items: center;
    justify-content: center;
}

.home-product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.home-product-card-new:hover .home-product-card-img img {
    transform: scale(1.07);
}

.home-product-card-img-placeholder {
    width: 100%;
    height: 100%;
    min-height: 200px;
    background: #111;
}

/* Carousel Arrows */
.carousel-arrow {
    position: absolute;
    bottom: -8px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-arrow:hover {
    background: rgba(245, 166, 35, 0.2);
    border-color: #f5a623;
    color: #f5a623;
}

.carousel-prev {
    right: 52px;
}

.carousel-next {
    right: 0;
}

/* Explore Center Button */
.section-explore-center {
    text-align: center;
    margin-top: 40px;
}

.explore-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 36px;
    background: #f5a623;
    color: #000;
    font-size: 14px;
    font-weight: 600;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

.explore-btn:hover {
    background: #e09520;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 166, 35, 0.3);
}

.explore-arrow {
    font-size: 16px;
}

/* Home Video Layout - 1 Large + 2 Small */
.home-video-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.home-video-featured {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.home-video-featured:hover {
    transform: translateY(-4px);
}

.home-video-featured-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #111;
}

.home-video-featured-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.home-video-featured:hover .home-video-featured-cover img {
    transform: scale(1.07);
}

.home-video-featured-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.video-play-btn-large,
.video-play-btn-small {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.85;
    transition: opacity 0.3s ease;
}

.home-video-featured:hover .video-play-btn-large,
.home-video-side-card:hover .video-play-btn-small {
    opacity: 1;
}

.home-video-featured-title {
    font-size: 16px;
    color: #ccc;
    margin-top: 14px;
    font-weight: 500;
    line-height: 1.5;
}

.home-video-side {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.home-video-side-card {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.home-video-side-card:hover {
    transform: translateY(-4px);
}

.home-video-side-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #111;
}

.home-video-side-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.home-video-side-card:hover .home-video-side-cover img {
    transform: scale(1.07);
}

.home-video-side-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.home-video-side-title {
    font-size: 15px;
    color: #ccc;
    margin-top: 10px;
    font-weight: 500;
    line-height: 1.5;
}

/* Home Series Grid - 2x2 */
.home-series-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.home-series-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.home-series-card {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    text-decoration: none;
    border-radius: 4px;
}

.home-series-card-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.home-series-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.home-series-card:hover .home-series-card-img img {
    transform: scale(1.07);
}

.home-series-card-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.home-series-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.35);
    transition: opacity 0.3s ease;
}

.home-series-card:hover .home-series-card-overlay {
    background: rgba(0, 0, 0, 0.2);
}

.home-series-card-text {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px 24px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
    z-index: 2;
}

.home-series-card-name {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* Home News Carousel */
.home-news-carousel {
    position: relative;
    overflow: visible;
}

.home-news-track {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 10px 0 60px;
}

.home-news-track::-webkit-scrollbar {
    display: none;
}

.home-news-card {
    flex: 0 0 calc(33.333% - 14px);
    min-width: 300px;
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
}

.home-news-card:hover {
    transform: translateY(-4px);
}

.home-news-card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #111;
}

.home-news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.home-news-card:hover .home-news-card-img img {
    transform: scale(1.07);
}

.home-news-card-img-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.home-news-card-title {
    font-size: 15px;
    font-weight: 500;
    color: #fff;
    margin-top: 12px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.home-news-card:hover .home-news-card-title {
    color: #f5a623;
}

/* Social Sidebar */
.social-sidebar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.social-sidebar-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: rgba(255, 255, 255, 0.35);
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.social-sidebar-icon:hover {
    color: #f5a623;
    background: rgba(245, 166, 35, 0.1);
}

.social-sidebar-icon svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* Section General Adjustments */
.section-products .section-header,
.section-videos .section-header,
.section-series .section-header,
.section-news .section-header {
    text-align: center;
    margin-bottom: 30px;
}

/* ========================================
   ABOUT PAGE STYLES
   ======================================== */

/* ========================================
   PRODUCT CENTER STYLES
   ======================================== */

.product-index-section {
    padding: 30px 0 60px;
    background: #0A0A0A;
}

/* Level 1 - 大类卡片（4列等宽） */
.product-level1-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.product-level1-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 20px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    text-decoration: none;
    color: #ccc;
    transition: all 0.3s ease;
    background: #1a1a1a;
}

.product-level1-card:hover {
    border-color: #f5a623;
    color: #f5a623;
}

.product-level1-card.active {
    border-color: #f5a623;
    background: #f5a623;
    color: #fff;
}

.product-level1-card.active .product-level1-icon {
    color: #fff;
}

.product-level1-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
    flex-shrink: 0;
}

.product-level1-card:hover .product-level1-icon { color: #f5a623; }
.product-level1-card.active:hover .product-level1-icon { color: #fff; }

.product-level1-icon svg { width: 32px; height: 32px; }
.product-level1-icon img { width: 32px; height: 32px; object-fit: contain; }

.product-level1-name {
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
}

/* Level 2 - 分类卡片（图标+文字） */
.product-level2-grid {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    overflow-x: auto;
    scrollbar-width: thin;
}

.product-level2-card {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 20px;
    min-width: 100px;
    border: 1px solid rgba(255,255,255,0.1);
    border-right: none;
    text-decoration: none;
    color: #aaa;
    transition: all 0.3s ease;
    background: #1a1a1a;
}

.product-level2-card:last-child { border-right: 1px solid rgba(255,255,255,0.1); }

.product-level2-card:hover {
    border-color: #f5a623;
    color: #f5a623;
    z-index: 1;
}

.product-level2-card.active {
    border-color: #f5a623;
    background: #f5a623;
    color: #fff;
    z-index: 2;
}

.product-level2-card.active .product-level2-icon { color: #fff; }

.product-level2-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
}

.product-level2-card:hover .product-level2-icon { color: #f5a623; }
.product-level2-card.active:hover .product-level2-icon { color: #fff; }

.product-level2-icon svg { width: 28px; height: 28px; }
.product-level2-icon img { width: 28px; height: 28px; object-fit: contain; }

.product-level2-name {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
}

/* 搜索框 + 筛选标签行 */
.product-filter-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 0;
}

.product-filter-search {
    position: relative;
    flex-shrink: 0;
}

.product-filter-search input {
    width: 300px;
    padding: 10px 40px 10px 14px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 13px;
    color: #ccc;
    background: #1a1a1a;
    outline: none;
}

.product-filter-search input:focus { border-color: #f5a623; }
.product-filter-search input::placeholder { color: #aaa; }

.product-filter-search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
}

.product-filter-search-btn:hover { color: #f5a623; }

.product-filter-tags {
    display: flex;
    gap: 0;
    flex-wrap: wrap;
}

.product-filter-tag {
    padding: 10px 24px;
    background: #1a1a1a;
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-right: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}

.product-filter-tag:last-child { border-right: none; }

.product-filter-tag:hover { background: #333; color: #ccc; }

.product-filter-tag.active {
    background: #f5a623;
    color: #fff;
}

/* 三级子系列横向标签栏 */
.product-subseries-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.product-subseries-tab {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    color: #ccc;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.product-subseries-tab:hover {
    border-color: #f5a623;
    color: #f5a623;
    background: rgba(245,166,35,0.08);
}

.product-subseries-tab.active {
    background: #f5a623;
    border-color: #f5a623;
    color: #fff;
}

/* 产品卡片网格 */
.product-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* 分组产品区域 */
.product-group-section {
    margin-bottom: 40px;
}

.product-group-section:last-child {
    margin-bottom: 0;
}

.product-group-title {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    padding: 0 0 14px 20px;
    margin-bottom: 24px;
    border-left: 4px solid #f5a623;
    line-height: 1.4;
}

/* 产品卡片 */
.product-card {
    display: flex;
    flex-direction: column;
    background: #111;
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all 0.4s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: rgba(245,166,35,0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 20px rgba(245,166,35,0.1);
}

/* 卡片图片区域 */
.product-card-img {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #1a1a1a;
}

.product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-card-img img {
    transform: scale(1.07);
}

.product-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1a1a1a;
    color: rgba(255,255,255,0.15);
}

/* NEW角标 */
.product-card-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 5px 14px;
    background: #f5a623;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: 4px;
    letter-spacing: 1px;
    z-index: 2;
}

/* 卡片信息区域 */
.product-card-info {
    padding: 20px 24px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card-name {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    line-height: 1.4;
    margin: 0;
}

.product-card-desc {
    font-size: 13px;
    color: #888;
    line-height: 1.6;
    margin-top: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 空状态 */
.product-empty-state {
    text-align: center;
    padding: 80px 20px;
}

.product-empty-text {
    font-size: 16px;
    color: #666;
}

/* Product Series Page - Layout */
.product-series-section {
    padding: 40px 0 60px;
    background: #0A0A0A;
}

.product-series-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 30px;
}

.product-sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
}

.product-sidebar-search {
    position: relative;
    margin-bottom: 20px;
}

.product-sidebar-search input {
    width: 100%;
    padding: 10px 40px 10px 14px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 13px;
    color: #ccc;
    background: #1a1a1a;
    outline: none;
}

.product-sidebar-search input:focus { border-color: #f5a623; }
.product-sidebar-search input::placeholder { color: #aaa; }

.product-sidebar-search-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
}

.product-sidebar-search-btn:hover { color: #f5a623; }

.product-sidebar-nav { display: flex; flex-direction: column; }

.product-sidebar-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
}

.product-sidebar-link:hover {
    color: #f5a623;
    background: rgba(255,255,255,0.04);
}

.product-sidebar-link.active {
    color: #fff;
    background: #f5a623;
    border-left-color: #f5a623;
}

.product-sidebar-link svg { opacity: 0.6; }
.product-sidebar-link.active svg { opacity: 1; }

.product-badge-new {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    background: #f5a623;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: 3px;
    letter-spacing: 1px;
}

.product-series-content { min-height: 400px; }

.product-category-group { margin-bottom: 30px; }

.product-category-heading {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    padding: 12px 20px;
    background: #1a1a1a;
    border-left: 4px solid #f5a623;
    margin-bottom: 20px;
}

.product-series-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-series-card {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
}

.product-series-card:hover { transform: translateY(-4px); }

.product-series-card-img {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    background: #1a1a1a;
    border-radius: 4px;
}

.product-series-card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
    transition: transform 0.5s ease;
}

.product-series-card:hover .product-series-card-img img { transform: scale(1.07); }

.product-series-card-placeholder { width: 100%; height: 100%; background: #1a1a1a; }

.product-series-card-name { font-size: 15px; font-weight: 600; color: #fff; margin-top: 12px; text-align: center; }
.product-series-card-subtitle { font-size: 13px; color: #888; margin-top: 4px; text-align: center; }

.product-empty-state-simple { text-align: center; padding: 60px 20px; color: #999; font-size: 15px; }

.product-empty-state { text-align: center; padding: 60px 20px; }
.product-empty-icon { margin-bottom: 16px; }
.product-empty-text { font-size: 16px; color: #aaa; margin-bottom: 8px; }
.product-empty-hint { font-size: 14px; color: #999; }

/* ========================================
   BREADCRUMB INLINE (below banner)
   ======================================== */
.breadcrumb-bar {
    background: #0A0A0A;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.breadcrumb-inline {
    font-size: 13px;
    color: #999;
}

.breadcrumb-inline a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-inline a:hover {
    color: #f5a623;
}

.breadcrumb-inline span {
    color: #999;
}

/* ========================================
   PROJECT CASES STYLES
   ======================================== */

.case-index-section {
    padding: 30px 0 60px;
    background: #0A0A0A;
}

/* Case Level 1 - 大类卡片 */
.case-level1-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.case-level1-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 20px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    text-decoration: none;
    color: #ccc;
    transition: all 0.3s ease;
    background: #1a1a1a;
}

.case-level1-card:hover {
    border-color: #f5a623;
    color: #f5a623;
}

.case-level1-card.active {
    border-color: #f5a623;
    background: #f5a623;
    color: #fff;
}

.case-level1-card.active .case-level1-icon { color: #fff; }

.case-level1-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
    flex-shrink: 0;
}

.case-level1-card:hover .case-level1-icon { color: #f5a623; }
.case-level1-card.active:hover .case-level1-icon { color: #fff; }

.case-level1-icon svg { width: 32px; height: 32px; }
.case-level1-icon img { width: 32px; height: 32px; object-fit: contain; }

.case-level1-name {
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
}

/* Case Search */
.case-search-row {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.case-search-box {
    position: relative;
    width: 320px;
}

.case-search-box input {
    width: 100%;
    padding: 12px 44px 12px 16px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 14px;
    color: #ccc;
    background: #1a1a1a;
    outline: none;
}

.case-search-box input:focus { border-color: #f5a623; }
.case-search-box input::placeholder { color: #aaa; }

.case-search-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
}

.case-search-btn:hover { color: #f5a623; }

/* Case Grid - 3 columns */
.case-grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.case-card-img {
    display: block;
    text-decoration: none;
    color: inherit;
}

.case-card-img-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
}

.case-card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card-img:hover .case-card-img-wrap img {
    transform: scale(1.05);
}

.case-card-placeholder {
    width: 100%;
    height: 100%;
    background: #222;
}

.case-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px 16px 16px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
}

.case-card-title {
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* Case Load More */
.case-load-more {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.case-load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 36px;
    background: #f5a623;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.case-load-more-btn:hover {
    background: #e5961a;
    transform: translateY(-2px);
}

/* Case Empty State */
.case-empty-state {
    text-align: center;
    padding: 60px 20px;
}

.case-empty-text { font-size: 16px; color: #aaa; margin-bottom: 8px; }
.case-empty-hint { font-size: 14px; color: #999; }

/* Case Detail */
.section-case-detail { padding: 40px 0 60px; background: #0A0A0A; }

.article-detail { max-width: 800px; margin: 0 auto; }
.article-title { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 16px; text-align: center; }
.article-meta { display: flex; justify-content: center; gap: 16px; margin-bottom: 30px; color: #888; font-size: 13px; }
.article-date { display: flex; align-items: center; gap: 4px; }
.article-content { font-size: 16px; line-height: 1.8; color: #ccc; }
.article-content img { max-width: 100%; height: auto; border-radius: 4px; margin: 16px 0; }

.article-nav { display: flex; justify-content: space-between; margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.1); }
.article-nav-link { display: block; text-decoration: none; color: #ccc; padding: 12px 16px; border: 1px solid rgba(255,255,255,0.1); border-radius: 4px; transition: all 0.3s ease; max-width: 45%; }
.article-nav-link:hover { border-color: #f5a623; }
.article-nav-label { display: block; font-size: 12px; color: #999; margin-bottom: 4px; }
.article-nav-title { font-size: 14px; font-weight: 500; }

/* ========================================
   CASE STUDY DETAIL - Premium Layout
   ======================================== */

/* Hero Section */
.csd-hero {
    position: relative;
    height: 80vh;
    min-height: 500px;
    max-height: 800px;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
}

.csd-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.csd-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.csd-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0,0,0,0.2) 0%,
        rgba(0,0,0,0.4) 50%,
        rgba(10,10,10,0.95) 100%
    );
}

.csd-hero-content {
    position: relative;
    z-index: 2;
    padding: 60px 0 80px;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 40px;
    padding-right: 40px;
}

.csd-hero-badge {
    display: inline-block;
    padding: 6px 20px;
    border: 1px solid rgba(245,166,35,0.6);
    color: #f5a623;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 24px;
    border-radius: 2px;
}

.csd-hero-title {
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 12px;
}

.csd-hero-subtitle {
    font-size: 20px;
    color: rgba(255,255,255,0.7);
    font-weight: 400;
    margin-bottom: 24px;
}

.csd-hero-meta {
    display: flex;
    gap: 24px;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

.csd-hero-date {
    display: flex;
    align-items: center;
    gap: 8px;
}

.csd-hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.4);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    animation: csd-bounce 2s infinite;
}

@keyframes csd-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* Breadcrumb */
.csd-breadcrumb {
    background: #0A0A0A;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.csd-breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
}

.csd-breadcrumb a {
    color: #888;
    text-decoration: none;
    transition: color 0.2s;
}

.csd-breadcrumb a:hover {
    color: #f5a623;
}

.csd-bc-sep {
    color: #555;
}

.csd-bc-current {
    color: #ccc;
}

/* Summary */
.csd-summary {
    max-width: 720px;
    margin: 50px auto 40px;
    text-align: center;
}

.csd-summary p {
    font-size: 20px;
    line-height: 1.8;
    color: #aaa;
    font-weight: 300;
}

/* Content Body */
.csd-content {
    background: #0A0A0A;
    padding: 0 0 80px;
}

.csd-body {
    max-width: 1100px;
    margin: 0 auto;
}

/* Case Study Content Sections */
.csd-body .cs-intro {
    max-width: 720px;
    margin: 0 auto 60px;
}

.csd-body .cs-intro p {
    font-size: 17px;
    line-height: 1.9;
    color: #bbb;
    margin-bottom: 20px;
}

.csd-body .cs-fullimg {
    margin: 60px -100px;
    overflow: hidden;
    border-radius: 4px;
}

.csd-body .cs-fullimg img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s ease;
}

.csd-body .cs-fullimg:hover img {
    transform: scale(1.02);
}

.csd-body .cs-section {
    max-width: 720px;
    margin: 60px auto;
}

.csd-body .cs-section.cs-dark {
    max-width: 100%;
    background: #111;
    padding: 60px 40px;
    border-radius: 4px;
    text-align: center;
}

.csd-body .cs-heading {
    font-size: 28px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.csd-body .cs-heading-num {
    font-size: 14px;
    font-weight: 600;
    color: #f5a623;
    letter-spacing: 1px;
    min-width: 32px;
}

.csd-body .cs-subheading {
    font-size: 18px;
    font-weight: 600;
    color: #f5a623;
    margin-bottom: 16px;
}

.csd-body p {
    font-size: 16px;
    line-height: 1.8;
    color: #bbb;
    margin-bottom: 16px;
}

/* Two Column Layout */
.csd-body .cs-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 24px;
}

.csd-body .cs-col p {
    font-size: 15px;
    color: #999;
    margin-bottom: 12px;
}

/* Styled Lists */
.csd-body .cs-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.csd-body .cs-list li {
    padding: 10px 0;
    padding-left: 24px;
    position: relative;
    font-size: 15px;
    color: #ccc;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.csd-body .cs-list li:last-child {
    border-bottom: none;
}

.csd-body .cs-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #f5a623;
}

/* Effect Grid */
.csd-body .cs-effect-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.csd-body .cs-effect-item {
    text-align: center;
    padding: 30px 20px;
    background: #111;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.06);
    transition: all 0.3s ease;
}

.csd-body .cs-effect-item:hover {
    border-color: rgba(245,166,35,0.3);
    transform: translateY(-4px);
}

.csd-body .cs-effect-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(245,166,35,0.1);
    color: #f5a623;
}

.csd-body .cs-effect-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
}

.csd-body .cs-effect-item p {
    font-size: 14px;
    color: #888;
    margin-bottom: 0;
}

/* Result Grid */
.csd-body .cs-result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 30px;
}

.csd-body .cs-result-item {
    padding: 24px;
    background: #111;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
}

.csd-body .cs-result-item:hover {
    border-color: rgba(245,166,35,0.3);
}

.csd-body .cs-result-num {
    font-size: 24px;
    font-weight: 700;
    color: #f5a623;
    min-width: 40px;
}

.csd-body .cs-result-item h4 {
    font-size: 15px;
    font-weight: 500;
    color: #ccc;
    margin: 0;
}

/* Brand Section */
.csd-body .cs-brand {
    background: #111;
    padding: 60px;
    border-radius: 8px;
    max-width: 100%;
}

.csd-body .cs-brand .cs-heading {
    justify-content: center;
    text-align: center;
    margin-bottom: 16px;
}

.csd-body .cs-brand-intro {
    text-align: center;
    font-size: 17px;
    color: #999;
    max-width: 600px;
    margin: 0 auto 40px;
}

/* Closing Section */
.csd-body .cs-closing {
    max-width: 100%;
    background: linear-gradient(135deg, #1a1207 0%, #0A0A0A 100%);
    padding: 80px 40px;
    text-align: center;
    border-radius: 8px;
    border: 1px solid rgba(245,166,35,0.15);
}

.csd-body .cs-closing-inner {
    max-width: 700px;
    margin: 0 auto;
}

.csd-body .cs-closing-text {
    font-size: 18px;
    line-height: 1.9;
    color: #ccc;
    font-weight: 300;
    font-style: italic;
}

/* Navigation */
.csd-nav {
    background: #0A0A0A;
    padding: 40px 0 60px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.csd-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.csd-nav-prev,
.csd-nav-next {
    flex: 1;
}

.csd-nav-next {
    text-align: right;
}

.csd-nav-link {
    display: block;
    text-decoration: none;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 6px;
    transition: all 0.3s ease;
    max-width: 320px;
}

.csd-nav-link:hover {
    border-color: #f5a623;
    background: rgba(245,166,35,0.05);
}

.csd-nav-link--next {
    margin-left: auto;
}

.csd-nav-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.csd-nav-link--next .csd-nav-label {
    justify-content: flex-end;
}

.csd-nav-title {
    display: block;
    font-size: 14px;
    color: #ccc;
    font-weight: 500;
}

.csd-nav-back {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #888;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 16px 24px;
    transition: color 0.3s;
}

.csd-nav-back:hover {
    color: #f5a623;
}

/* Responsive */
@media (max-width: 1200px) {
    .csd-body .cs-fullimg {
        margin: 40px 0;
    }
}

@media (max-width: 768px) {
    .csd-hero {
        height: 60vh;
        min-height: 400px;
    }
    
    .csd-hero-title {
        font-size: 28px;
    }
    
    .csd-hero-subtitle {
        font-size: 16px;
    }
    
    .csd-hero-content {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .csd-body .cs-two-col {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .csd-body .cs-effect-grid {
        grid-template-columns: 1fr;
    }
    
    .csd-body .cs-result-grid {
        grid-template-columns: 1fr;
    }
    
    .csd-body .cs-brand {
        padding: 40px 20px;
    }
    
    .csd-body .cs-section.cs-dark {
        padding: 40px 20px;
    }
    
    .csd-nav-inner {
        flex-direction: column;
        gap: 16px;
    }
    
    .csd-nav-prev,
    .csd-nav-next {
        width: 100%;
        text-align: left;
    }
    
    .csd-nav-link {
        max-width: 100%;
    }
    
    .csd-nav-link--next {
        margin-left: 0;
    }
    
    .csd-nav-link--next .csd-nav-label {
        justify-content: flex-start;
    }
}

/* ========================================
   VIDEO CENTER STYLES
   ======================================== */

.video-index-section {
    padding: 30px 0 60px;
    background: #0A0A0A;
}

/* Video Category Tabs - 纯文字无图标 */
.video-cat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.video-cat-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 16px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    text-decoration: none;
    color: #ccc;
    transition: all 0.3s ease;
    background: #1a1a1a;
}

.video-cat-card:hover {
    border-color: #f5a623;
    color: #f5a623;
}

.video-cat-card.active {
    border-color: #f5a623;
    background: #f5a623;
    color: #fff;
}

.video-cat-name {
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
}

/* Video Search */
.video-search-row {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.video-search-box {
    position: relative;
    width: 320px;
}

.video-search-box input {
    width: 100%;
    padding: 12px 44px 12px 16px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 14px;
    color: #ccc;
    background: #1a1a1a;
    outline: none;
}

.video-search-box input:focus { border-color: #f5a623; }
.video-search-box input::placeholder { color: #aaa; }

.video-search-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
}

.video-search-btn:hover { color: #f5a623; }

/* Video Grid - 3 columns */
.video-grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* Video Item */
.video-item {
    display: flex;
    flex-direction: column;
}

.video-player-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: 6px;
    background: #0a0a0a;
}

.video-cover {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.video-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-player-wrap:hover .video-cover img {
    transform: scale(1.05);
}

.video-cover-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
}

.video-cover-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.85;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
}

.video-player-wrap:hover .video-cover-play {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.08);
}

.video-player-wrap video,
.video-player-wrap iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.video-item-title {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    margin-top: 12px;
    text-align: center;
    line-height: 1.5;
}

/* Video Card (旧样式保留兼容) */
.video-card {
    cursor: pointer;
}

.video-card-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
}

.video-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-card-cover img {
    transform: scale(1.05);
}

.video-card-placeholder {
    width: 100%;
    height: 100%;
    background: #222;
}

.video-card-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.video-card:hover .video-card-play {
    opacity: 1;
}

.video-card-title {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    margin-top: 10px;
    text-align: center;
}

/* Video Load More */
.video-load-more {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.video-load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 36px;
    background: #f5a623;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.video-load-more-btn:hover {
    background: #e5961a;
    transform: translateY(-2px);
}

/* Video Empty State */
.video-empty-state { text-align: center; padding: 60px 20px; }
.video-empty-text { font-size: 16px; color: #aaa; margin-bottom: 8px; }
.video-empty-hint { font-size: 14px; color: #999; }

/* Video Modal */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

.video-modal.active { display: flex; align-items: center; justify-content: center; }

.video-modal-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
}

.video-modal-body {
    position: relative;
    width: 80%;
    max-width: 900px;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}

.video-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    z-index: 1;
}

.video-modal-content {
    width: 100%;
    height: 100%;
}

.video-modal-content iframe,
.video-modal-content video {
    width: 100%;
    height: 100%;
}

.video-modal-content video::-webkit-media-controls-download-button,
.video-modal-content video::-webkit-media-controls-enclosure {
    overflow: hidden;
}

/* ========================================
   NEWS CENTER STYLES
   ======================================== */

.news-index-section {
    padding: 30px 0 60px;
    background: #0A0A0A;
}

/* News Category Tabs - 纯文字无图标 */
.news-cat-grid {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.news-cat-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 16px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    text-decoration: none;
    color: #ccc;
    transition: all 0.3s ease;
    background: #1a1a1a;
}

.news-cat-card:hover {
    border-color: #f5a623;
    color: #f5a623;
}

.news-cat-card.active {
    border-color: #f5a623;
    background: #f5a623;
    color: #fff;
}

.news-cat-name {
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
}

/* News Search */
.news-search-row {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.news-search-box {
    position: relative;
    width: 320px;
}

.news-search-box input {
    width: 100%;
    padding: 12px 44px 12px 16px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 14px;
    color: #ccc;
    background: #1a1a1a;
    outline: none;
}

.news-search-box input:focus { border-color: #f5a623; }
.news-search-box input::placeholder { color: #aaa; }

.news-search-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
}

.news-search-btn:hover { color: #f5a623; }

/* News Grid - 3 columns */
.news-grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.news-card {
    text-decoration: none;
    color: inherit;
    display: block;
}

.news-card-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
}

.news-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-card-cover img {
    transform: scale(1.05);
}

.news-card-placeholder {
    width: 100%;
    height: 100%;
    background: #222;
}

.news-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
}

.news-card-title {
    font-size: 13px;
    font-weight: 500;
    color: #fff;
    margin: 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-meta {
    padding: 10px 2px 0;
}

.news-card-date {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: #999;
}

/* News Load More */
.news-load-more {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.news-load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 36px;
    background: #f5a623;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.news-load-more-btn:hover {
    background: #e5961a;
    transform: translateY(-2px);
}

/* News Empty State */
.news-empty-state { text-align: center; padding: 60px 20px; }
.news-empty-text { font-size: 16px; color: #aaa; margin-bottom: 8px; }
.news-empty-hint { font-size: 14px; color: #999; }

/* ========================================
   TECHNICAL SUPPORT STYLES
   ======================================== */

/* Top Tab Bar */
.tech-tab-bar {
    background: #0A0A0A;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 0;
}

.tech-tabs {
    display: flex;
    gap: 0;
}

.tech-tab {
    display: inline-flex;
    align-items: center;
    padding: 16px 28px;
    text-decoration: none;
    color: #ccc;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.tech-tab:hover { color: #f5a623; }

.tech-tab.active {
    color: #fff;
    background: #f5a623;
}

.tech-section {
    padding: 30px 0 60px;
    background: #0A0A0A;
}

/* Sub-category Grid (灯库/UE插件/产品画册/其他) */
.tech-subcat-grid {
    display: flex;
    align-items: flex-end;
    gap: 0;
    margin-bottom: 24px;
}

.tech-subcat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px 24px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    background: #1a1a1a;
    transition: all 0.3s ease;
    min-width: 90px;
}

.tech-subcat-card:first-child {
    border-radius: 4px 0 0 4px;
}

.tech-subcat-card:last-of-type {
    border-radius: 0 4px 4px 0;
}

.tech-subcat-card + .tech-subcat-card {
    border-left: none;
}

.tech-subcat-card:hover {
    border-color: #f5a623;
    color: #f5a623;
    z-index: 1;
}

.tech-subcat-card.active {
    border-color: #f5a623;
    background: #f5a623;
    color: #fff;
    z-index: 2;
}

.tech-subcat-icon {
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-subcat-name {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
}

/* Search Box (inline with subcats) */
.tech-search-box {
    position: relative;
    width: 220px;
    margin-left: auto;
    flex-shrink: 0;
}

.tech-search-box input {
    width: 100%;
    padding: 12px 40px 12px 14px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 13px;
    color: #ccc;
    background: #1a1a1a;
    outline: none;
}

.tech-search-box input:focus { border-color: #f5a623; }
.tech-search-box input::placeholder { color: #aaa; }

.tech-search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
}

.tech-search-btn:hover { color: #f5a623; }

/* Lamp Table */
.tech-table-wrapper {
    overflow-x: auto;
    margin-top: 10px;
}

.tech-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.tech-table thead th {
    background: #333;
    color: #fff;
    font-weight: 500;
    padding: 12px 16px;
    text-align: center;
    white-space: nowrap;
}

.tech-table thead th:first-child {
    text-align: left;
    min-width: 180px;
}

.tech-table tbody tr {
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: background 0.2s;
}

.tech-table tbody tr:hover { background: rgba(255,255,255,0.04); }

.tech-table tbody td {
    padding: 14px 16px;
    text-align: center;
    vertical-align: middle;
}

.tech-table-product-name {
    text-align: left !important;
    font-weight: 500;
    color: #ccc;
}

.tech-download-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: #666;
    transition: all 0.3s ease;
}

.tech-download-icon:hover {
    color: #f5a623;
    background: rgba(245, 166, 35, 0.08);
}

.tech-empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 14px;
}

/* Tech Group Content (UE/产品画册/其他 within tech section) */
.tech-group-content .dl-file-card {
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
}

.tech-group-content .dl-file-card:hover {
    border-color: #f5a623;
    background: rgba(245,166,35,0.06);
}

.tech-group-content .dl-file-name {
    color: #ccc;
}

.tech-group-content .dl-file-meta {
    color: #999;
}

/* Tech Pagination */
.tech-pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 24px;
}

.lamp-pag-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    background: #1a1a1a;
    color: #ccc;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.lamp-pag-btn:hover:not(.disabled):not(.active) {
    border-color: #f5a623;
    color: #f5a623;
}

.lamp-pag-btn.active {
    background: #f5a623;
    border-color: #f5a623;
    color: #fff;
}

.lamp-pag-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* FAQ Banner */
.tech-faq-banner {
    position: relative;
    width: 100%;
    height: 320px;
    border-radius: 6px;
    overflow: hidden;
    background: #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: 40px;
}

.tech-faq-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, transparent 30%, rgba(0,0,0,0.5));
}

.tech-faq-banner-text {
    position: relative;
    z-index: 1;
    padding: 40px 50px;
    max-width: 500px;
}

.tech-faq-title {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 16px;
}

.tech-faq-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.9);
    line-height: 1.7;
    margin: 0 0 16px;
}

.tech-faq-phone {
    font-size: 14px;
    color: #fff;
    font-weight: 500;
    margin: 0;
}

/* FAQ Accordion */
.tech-faq-list {
    max-width: 900px;
}

.tech-faq-item {
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.tech-faq-question {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    cursor: pointer;
    transition: color 0.3s;
}

.tech-faq-question:hover { color: #f5a623; }

.tech-faq-num {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #f5a623;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tech-faq-q-title {
    font-size: 15px;
    font-weight: 500;
    flex: 1;
}

.tech-faq-toggle {
    font-size: 20px;
    color: #999;
    transition: transform 0.3s;
    flex-shrink: 0;
}

.tech-faq-item.open .tech-faq-toggle {
    transform: rotate(45deg);
}

.tech-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.tech-faq-item.open .tech-faq-answer {
    max-height: 200px;
    padding-bottom: 20px;
}

.tech-faq-answer p {
    font-size: 14px;
    color: #999;
    line-height: 1.7;
    margin: 0;
    padding-left: 46px;
}

/* Service Layout */
.tech-service-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 40px;
    align-items: start;
    margin-bottom: 40px;
}

.tech-service-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px;
}

.tech-service-subtitle {
    font-size: 16px;
    color: #f5a623;
    font-weight: 500;
    margin: 0 0 30px;
}

.tech-service-contact {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.tech-service-contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.tech-service-contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tech-service-label {
    font-size: 13px;
    color: #999;
    display: block;
}

.tech-service-value {
    font-size: 15px;
    color: #ccc;
    font-weight: 500;
}

.tech-service-image {
    border-radius: 6px;
    overflow: hidden;
}

.tech-service-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Service Form */
.tech-service-form-wrapper {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
}

.tech-service-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.tech-service-form-col {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tech-service-form-col input,
.tech-service-form-col textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 14px;
    color: #ccc;
    background: #1a1a1a;
    outline: none;
    font-family: inherit;
    resize: vertical;
}

.tech-service-form-col input:focus,
.tech-service-form-col textarea:focus {
    border-color: #f5a623;
}

.tech-service-form-col input::placeholder,
.tech-service-form-col textarea::placeholder {
    color: #aaa;
}

.tech-service-form-submit {
    margin-top: 24px;
}

.tech-service-submit-btn {
    padding: 12px 40px;
    background: #f5a623;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s;
}

.tech-service-submit-btn:hover {
    background: #e5961a;
}

/* About Hero Banner */
.about-hero {
    position: relative;
    width: 100%;
    height: 420px;
    overflow: hidden;
    background: #111;
}

.about-hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.about-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0.3) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.about-hero-title {
    font-size: 64px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 8px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* About Sub Nav */
.about-subnav {
    position: absolute;
    top: 0;
    left: 60px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 110px;
}

.about-subnav-item {
    display: block;
    padding: 14px 28px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    background: rgba(0, 0, 0, 0.45);
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.about-subnav-item:hover {
    color: #fff;
    background: rgba(0, 0, 0, 0.6);
}

.about-subnav-item.active {
    color: #f5a623;
    background: rgba(0, 0, 0, 0.6);
    border-left-color: #f5a623;
}

/* About Breadcrumb */
.about-breadcrumb-wrap {
    background: #0A0A0A;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* About Section */
.about-section {
    padding: 90px 0;
    background: #0A0A0A;
}

.about-section-light {
    background: #111;
}

.about-section-header {
    text-align: center;
    margin-bottom: 60px;
}

.about-section-title {
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.about-section-subtitle {
    font-size: 18px;
    color: #f5a623;
    letter-spacing: 2px;
}

/* About Intro Layout */
.about-intro-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
    align-items: center;
}

.about-intro-reverse {
    direction: rtl;
}

.about-intro-reverse > * {
    direction: ltr;
}

.about-intro-media {
    overflow: hidden;
    border-radius: 4px;
}

.about-intro-media img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.about-intro-media:hover img {
    transform: scale(1.07);
}

.about-intro-video {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
}

.about-intro-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 4px;
}

.about-intro-text p {
    font-size: 15px;
    color: #aaa;
    line-height: 2;
    margin-bottom: 16px;
    text-align: justify;
}

/* About Intro Row Layout */
.about-section .container {
    max-width: 1400px;
    padding: 0 40px;
}

.about-intro-row1,
.about-intro-row2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
    align-items: center;
}

.about-intro-row2 {
    margin-bottom: 0;
}

.about-intro-img {
    overflow: hidden;
    border-radius: 4px;
}

.about-intro-img img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
    transform: scale(1.07);
}

.about-intro-img:hover img {
    transform: scale(1);
}

.about-intro-txt p {
    font-size: 19px;
    color: #ddd;
    line-height: 2.4;
    margin-bottom: 28px;
    text-align: justify;
    letter-spacing: 0.8px;
}

/* About Cert Carousel */
.about-cert-carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    overflow: hidden;
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
}

.about-cert-track {
    position: relative;
}

.about-cert-slide {
    display: none;
}

.about-cert-slide.active {
    display: block;
}

.about-cert-main-img {
    width: 100%;
    aspect-ratio: 3 / 4;
    max-height: 650px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    position: relative;
}

.about-cert-slide:not(.img-loaded) .about-cert-main-img::before {
    content: '';
    position: absolute;
    width: 32px;
    height: 32px;
    border: 3px solid rgba(245, 166, 35, 0.2);
    border-top-color: #f5a623;
    border-radius: 50%;
    animation: cert-spin 0.8s linear infinite;
    z-index: 1;
    pointer-events: none;
}

@keyframes cert-spin {
    to { transform: rotate(360deg); }
}

.about-cert-main-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.about-cert-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background: rgba(26,26,26,0.9);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ccc;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.about-cert-arrow:hover {
    background: #f5a623;
    color: #fff;
    border-color: #f5a623;
}

.about-cert-prev {
    left: 16px;
}

.about-cert-next {
    right: 16px;
}

/* About Cert Thumbnails */
.about-cert-thumbs {
    display: flex;
    gap: 12px;
    justify-content: flex-start;
    overflow-x: auto;
    padding: 8px 0 16px;
    scrollbar-width: none;
    -ms-overflow-style: none;
    flex: 1;
    min-width: 0;
}
.about-cert-thumbs::-webkit-scrollbar {
    display: none;
}

/* 缩略图包装器（带左右箭头和滚动条） */
.about-cert-thumbs-wrap {
    position: relative;
    margin-top: 24px;
    padding: 0 40px;
}
.about-cert-thumbs-wrap .about-cert-thumbs {
    margin-top: 0;
    padding: 8px 0 4px;
    display: flex;
}
.about-cert-thumb-arrow {
    position: absolute;
    top: 16px;
    width: 32px;
    height: 32px;
    background: rgba(26, 26, 26, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ccc;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 5;
}
.about-cert-thumb-arrow:hover {
    background: #f5a623;
    color: #fff;
    border-color: #f5a623;
}
.about-cert-thumb-prev {
    left: 0;
}
.about-cert-thumb-next {
    right: 0;
}
.about-cert-scrollbar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: 8px;
    position: relative;
    clear: both;
}
.about-cert-scrollbar-drag {
    height: 100%;
    background: #f5a623;
    border-radius: 2px;
    min-width: 40px;
    position: absolute;
    left: 0;
    top: 0;
    transition: left 0.1s ease;
}

.about-cert-thumb {
    flex: 0 0 110px;
    height: 82px;
    border: 2px solid transparent;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.5;
    transition: all 0.3s ease;
    background: #1a1a1a;
}

.about-cert-thumb:hover {
    opacity: 0.8;
}

.about-cert-thumb.active {
    border-color: #f5a623;
    opacity: 1;
}

.about-cert-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* About Environment Grid */
.about-env-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.about-env-item {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    aspect-ratio: 4 / 3;
    cursor: pointer;
}

.about-env-item.about-env-large {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: auto;
}

.about-env-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.about-env-item:hover img {
    transform: scale(1.07);
}

.about-env-label {
    position: absolute;
    top: 12px;
    left: 0;
    padding: 6px 16px;
    background: rgba(245, 166, 35, 0.85);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
}

.about-empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 15px;
}

/* ========================================
   RESPONSIVE - TABLET (max-width: 1024px)
   ======================================== */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-grid,
    .video-grid,
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .honors-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .about-org-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-certs-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-service-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .about-intro {
        gap: 40px;
    }

    .feature-row {
        gap: 40px;
    }

    .home-product-card-new {
        flex: 0 0 calc(50% - 10px);
        min-width: 280px;
    }

    .home-news-card {
        flex: 0 0 calc(50% - 10px);
        min-width: 280px;
    }
}

/* ========================================
   RESPONSIVE - MOBILE (max-width: 768px)
   ======================================== */
@media (max-width: 768px) {
    .site-main {
        width: 100%;
    }

    .site-header {
        height: 60px;
    }

    .header-inner {
        padding: 0 16px;
    }

    .logo-text {
        font-size: 24px;
    }

    .logo-img {
        height: 40px;
        width: auto;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.97);
        flex-direction: column;
        padding: 20px 0;
        border-top: 1px solid #222;
        z-index: 999;
    }

    .main-nav.open {
        display: flex;
    }

    .main-nav a {
        padding: 12px 20px;
        width: 100%;
        text-align: center;
        font-size: 16px;
    }

    .nav-item-dropdown {
        width: 100%;
    }

    .nav-item-dropdown .nav-dropdown-panel {
        position: static;
        transform: none;
        opacity: 0;
        visibility: hidden;
        height: 0;
        overflow: hidden;
        border-top: none;
        border-bottom: none;
        background: rgba(0, 0, 0, 0.95);
    }

    .nav-item-dropdown.open .nav-dropdown-panel {
        opacity: 1;
        visibility: visible;
        height: auto;
        overflow: visible;
    }

    .nav-dropdown-panel {
        width: 100%;
        padding: 0;
        min-width: unset;
    }

    .nav-dropdown-link {
        padding: 10px 20px;
        font-size: 14px;
        text-align: center;
    }

    .nav-dropdown-arrow {
        display: none;
    }

    .header-actions {
        gap: 8px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero-banner {
        margin-top: 60px;
    }

    .banner-slider {
        padding-bottom: 50%;
    }

    .banner-arrow {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    .banner-prev {
        left: 10px;
    }

    .banner-next {
        right: 10px;
    }

    .banner-dots {
        bottom: 12px;
        gap: 8px;
    }

    .banner-dot {
        width: 8px;
        height: 8px;
    }

    .slide-content h2 {
        font-size: 28px;
    }

    .slide-content p {
        font-size: 14px;
    }

    .slide-content .btn {
        padding: 10px 24px;
        font-size: 13px;
    }

    .banner-slider .prev,
    .banner-slider .next {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    .banner-slider .prev {
        left: 12px;
    }

    .banner-slider .next {
        right: 12px;
    }

    .section-header {
        margin: 40px 0 24px;
    }

    .section-header .cn-title {
        font-size: 24px;
    }

    .product-grid,
    .news-grid,
    .video-grid,
    .case-grid,
    .series-list {
        grid-template-columns: 1fr;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    .news-list-item {
        gap: 16px;
        padding: 20px 0;
    }

    .news-list-img {
        width: 140px;
    }

    .news-list-title {
        font-size: 15px;
    }

    .news-list-excerpt {
        -webkit-line-clamp: 1;
        font-size: 13px;
    }

    .news-skeleton-item {
        gap: 16px;
    }

    .news-skeleton-img {
        width: 120px;
    }

    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .video-page-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .video-skeleton-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .video-empty-state {
        padding: 60px 20px 40px;
    }

    .video-modal-body {
        width: 95%;
    }

    .series-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .home-product-card {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .home-product-card:nth-child(even) {
        direction: ltr;
    }

    .home-product-img {
        min-height: 200px;
    }

    .home-product-img-placeholder {
        min-height: 200px;
    }

    .home-product-info {
        padding: 24px 20px;
    }

    .home-product-name {
        font-size: 22px;
    }

    .home-product-subtitle {
        font-size: 14px;
    }

    .banner-content {
        padding: 20px 24px;
    }

    .banner-content-title {
        font-size: 24px;
    }

    .banner-content-subtitle {
        font-size: 13px;
    }

    .banner-slogan {
        font-size: 18px;
        letter-spacing: 4px;
        bottom: 30px;
    }

    .banner-tagline {
        font-size: 11px;
        letter-spacing: 1px;
        bottom: 65px;
    }

    .home-product-card-new {
        flex: 0 0 calc(50% - 10px);
        min-width: 260px;
    }

    .home-video-layout {
        grid-template-columns: 1fr;
    }

    .home-series-row {
        grid-template-columns: 1fr;
    }

    .home-news-card {
        flex: 0 0 calc(50% - 10px);
        min-width: 260px;
    }

    .social-sidebar {
        right: 10px;
    }

    .social-sidebar-icon {
        width: 32px;
        height: 32px;
    }

    .social-sidebar-icon svg {
        width: 14px;
        height: 14px;
    }

    .home-series-card-name {
        font-size: 20px;
    }

    /* About Page - Tablet */
    .about-hero {
        height: 320px;
    }

    .about-hero-title {
        font-size: 42px;
        letter-spacing: 4px;
    }

    .about-subnav {
        left: 20px;
        margin-top: 40px;
    }

    .about-subnav-item {
        padding: 10px 20px;
        font-size: 13px;
    }

    .about-intro-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .about-intro-reverse {
        direction: ltr;
    }

    .about-intro-row1,
    .about-intro-row2 {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .about-intro-row2 {
        margin-bottom: 0;
    }

    .about-section .container {
        padding: 0 16px;
    }

    .about-intro-txt p {
        font-size: 15px;
        line-height: 2;
        margin-bottom: 16px;
    }

    .about-cert-carousel {
        max-width: 100%;
    }

    .about-env-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-env-item.about-env-large {
        grid-column: span 2;
        grid-row: span 1;
    }

    /* Certificate Grid - Tablet */
    .about-cert-grid {
        max-width: 100%;
    }

    .about-cert-img-card {
        max-width: 320px;
    }

    .about-certs-multi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-certs-grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Product Center - Tablet */
    .product-level1-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-level1-card { padding: 18px 16px; }
    .product-level1-name { font-size: 14px; }

    .product-level2-card { padding: 12px 16px; min-width: 90px; }

    .product-subseries-tabs {
        gap: 8px;
        margin-bottom: 24px;
        padding-bottom: 20px;
    }

    .product-subseries-tab {
        padding: 8px 18px;
        font-size: 13px;
    }

    .product-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .product-card-info {
        padding: 16px 20px 20px;
    }

    .product-card-name { font-size: 15px; }

    .product-group-title {
        font-size: 16px;
    }

    .product-series-layout {
        grid-template-columns: 180px 1fr;
        gap: 20px;
    }

    .product-series-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    /* Cases - Tablet */
    .case-level1-grid { grid-template-columns: repeat(2, 1fr); }
    .case-level1-card { padding: 18px 16px; }
    .case-level1-name { font-size: 14px; }
    .case-grid-3col { grid-template-columns: repeat(2, 1fr); gap: 14px; }

    /* Video - Tablet */
    .video-cat-grid { grid-template-columns: repeat(2, 1fr); }
    .video-cat-card { padding: 16px 14px; }
    .video-cat-name { font-size: 14px; }
    .video-grid-3col { grid-template-columns: repeat(2, 1fr); gap: 18px; }

    /* News - Tablet */
    .news-cat-grid { flex-wrap: wrap; }
    .news-cat-card { padding: 16px 14px; }
    .news-cat-name { font-size: 14px; }
    .news-grid-3col { grid-template-columns: repeat(2, 1fr); gap: 14px; }

    /* Technical - Tablet */
    .tech-subcat-card { padding: 14px 18px; }
    .tech-search-box { width: 200px; }
    .tech-service-layout { grid-template-columns: 320px 1fr; gap: 30px; }

    .brand-intro-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .brand-intro-stats {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }

    .brand-stat {
        padding: 20px 8px;
    }

    .brand-stat-num {
        font-size: 28px;
    }

    .service-highlights-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .consult-bar-inner {
        gap: 12px;
    }

    .consult-bar-text {
        display: none;
    }

    .consult-bar-phone {
        font-size: 16px;
    }

    .section-header .section-title {
        font-size: 24px;
    }

    .product-grid-product {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .product-advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .product-services-row {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .product-tab {
        padding: 14px 20px;
        font-size: 14px;
    }

    .product-skeleton-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .series-tab-card {
        min-width: 120px;
        padding: 14px 12px;
    }

    .series-tab-name {
        font-size: 12px;
    }

    .product-category-row {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        padding: 16px 0;
        gap: 8px;
    }

    .category-tab-card {
        padding: 8px 14px;
        white-space: nowrap;
    }

    .product-search-box input {
        width: 160px;
    }

    .product-detail .detail-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-gallery {
        position: static;
    }

    .contact-layout {
        max-width: 100%;
    }

    .contact-form .form-row {
        grid-template-columns: 1fr;
    }

    .map-wrapper iframe {
        height: 280px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }

    .page-banner {
        height: 320px;
    }

    .page-banner--fullbg {
        height: 280px !important;
    }

    .page-banner-bg-img {
        width: 100% !important;
        height: 100% !important;
    }

    .page-banner-title {
        font-size: 36px;
        letter-spacing: 5px;
    }

    .page-banner-breadcrumb {
        bottom: 20px;
        right: 30px;
        font-size: 13px;
    }

    .breadcrumb {
        margin-top: 60px;
    }

    .about-intro {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 40px 0;
    }

    .section-about-profile,
    .section-about-vision,
    .section-about-spirit {
        padding: 40px 0;
    }

    .section-title {
        font-size: 22px;
    }

    .about-text p {
        text-indent: 0;
    }

    .factory-grid {
        grid-template-columns: 1fr 1fr;
    }

    .factory-card-large {
        grid-column: 1 / -1;
        grid-row: auto;
    }

    .factory-card-large .factory-card-img {
        min-height: 250px;
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
        padding: 30px 0;
    }

    .stat-item {
        padding: 16px;
    }

    .stat-number {
        font-size: 32px;
    }

    .honors-placeholder-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .env-placeholder-grid {
        grid-template-columns: 1fr 1fr;
    }

    .about-images-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .env-gallery {
        grid-template-columns: 1fr 1fr;
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
        padding: 30px 0;
    }

    .stat-item .stat-number {
        font-size: 30px;
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .feature-row {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .feature-row.reverse {
        direction: ltr;
    }

    .footer-nav {
        gap: 16px;
    }

    .footer-nav a {
        font-size: 13px;
    }

    .dl-tabs {
        gap: 0;
    }

    .dl-tab {
        padding: 12px 18px;
        font-size: 13px;
    }

    .dl-file-card {
        padding: 14px 16px;
    }

    .dl-file-icon {
        width: 36px;
        height: 36px;
    }

    .download-entry .btn-download {
        align-self: flex-end;
    }

    .contact-form {
        padding: 24px;
    }

    .pagination {
        flex-wrap: wrap;
    }

    .article-detail .article-title {
        font-size: 22px;
    }

    .case-card {
        flex: 0 0 260px;
    }

    .case-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .case-skeleton-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .case-empty-state {
        padding: 60px 20px 40px;
    }

    .section-explore {
        margin-top: 20px;
    }

    .section-cases {
        padding: 30px 0 40px;
    }
}

/* ========================================
   RESPONSIVE - SMALL MOBILE (max-width: 480px)
   ======================================== */
@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .slide-content h2 {
        font-size: 22px;
    }

    .section-header .cn-title {
        font-size: 20px;
    }

    .product-cards-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .product-card-img { aspect-ratio: 16 / 10; }
    .product-card-info { padding: 16px 20px 20px; }
    .product-card-name { font-size: 16px; }
    .product-card-desc { font-size: 13px; }

    .product-card .card-content {
        padding: 14px;
    }

    .honors-grid {
        grid-template-columns: 1fr;
    }

    .env-gallery {
        grid-template-columns: 1fr;
    }

    .cta-banner .cta-content h2 {
        font-size: 24px;
    }

    .footer-logo {
        font-size: 28px;
    }

    .home-product-card-new {
        flex: 0 0 calc(100% - 0px);
        min-width: 260px;
    }

    .home-news-card {
        flex: 0 0 calc(100% - 0px);
        min-width: 260px;
    }

    .social-sidebar {
        display: none;
    }

    .home-series-card-name {
        font-size: 18px;
    }

    .explore-btn {
        padding: 10px 28px;
        font-size: 13px;
    }

    /* About Page - Mobile */
    .about-hero {
        height: 260px;
    }

    .about-hero-title {
        font-size: 32px;
        letter-spacing: 2px;
    }

    .about-subnav {
        display: none;
    }

    .about-section {
        padding: 50px 0;
    }

    .about-section-header {
        margin-bottom: 36px;
    }

    .about-section-title {
        font-size: 26px;
    }

    .about-cert-arrow {
        width: 36px;
        height: 36px;
    }

    .about-cert-thumb {
        flex: 0 0 75px;
        height: 56px;
    }

    .about-cert-thumbs-wrap {
        padding: 0 30px;
    }
    .about-cert-thumb-arrow {
        width: 26px;
        height: 26px;
    }

    .about-cert-carousel {
        max-width: 100%;
    }

    .about-cert-main-img {
        max-height: 450px;
        padding: 16px;
    }

    .about-env-grid {
        grid-template-columns: 1fr;
    }

    .about-env-item.about-env-large {
        grid-column: span 1;
    }

    /* Certificate Grid - Mobile */
    .about-cert-img-card {
        max-width: 280px;
    }

    .about-cert-card-info h3 {
        font-size: 16px;
    }

    .about-cert-card-info p {
        font-size: 13px;
    }

    .about-certs-multi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .about-certs-grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Product Center - Mobile */
    .product-level1-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .product-level1-card { padding: 14px 12px; gap: 10px; }
    .product-level1-icon { width: 28px; height: 28px; }
    .product-level1-icon svg { width: 22px; height: 22px; }
    .product-level1-name { font-size: 13px; }

    .product-level2-card { padding: 10px 14px; min-width: 80px; }
    .product-level2-icon { width: 24px; height: 24px; }
    .product-level2-icon svg { width: 20px; height: 20px; }
    .product-level2-name { font-size: 12px; }

    .product-filter-row { flex-direction: column; align-items: flex-start; }
    .product-filter-search { width: 100%; }
    .product-filter-search input { width: 100%; }

    .product-subseries-tabs {
        gap: 6px;
        margin-bottom: 20px;
        padding-bottom: 16px;
    }

    .product-subseries-tab {
        padding: 8px 14px;
        font-size: 12px;
    }

    .product-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .product-card-img { aspect-ratio: 1; }
    .product-card-info { padding: 14px 16px 18px; }
    .product-card-name { font-size: 14px; }
    .product-card-desc { font-size: 12px; margin-top: 6px; }

    .product-group-title {
        font-size: 16px;
        padding: 0 0 10px 14px;
        margin-bottom: 16px;
    }

    .product-group-section {
        margin-bottom: 28px;
    }

    .product-series-layout { grid-template-columns: 1fr; }
    .product-series-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .product-category-heading { font-size: 16px; padding: 10px 14px; }

    /* Cases - Mobile */
    .case-level1-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .case-level1-card { padding: 14px 12px; gap: 10px; }
    .case-level1-icon { width: 28px; height: 28px; }
    .case-level1-icon svg { width: 22px; height: 22px; }
    .case-level1-name { font-size: 13px; }
    .case-search-box { width: 100%; }
    .case-grid-3col { grid-template-columns: 1fr; gap: 12px; }

    /* Video - Mobile */
    .video-cat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .video-cat-card { padding: 14px 12px; }
    .video-cat-name { font-size: 13px; }
    .video-search-box { width: 100%; }
    .video-grid-3col { grid-template-columns: 1fr; gap: 14px; }
    .video-player-wrap { aspect-ratio: 16 / 9; }
    .video-modal-body { width: 95%; }

    /* News - Mobile */
    .news-cat-grid { flex-wrap: wrap; gap: 10px; }
    .news-cat-card { padding: 14px 12px; }
    .news-cat-name { font-size: 13px; }
    .news-search-box { width: 100%; }
    .news-grid-3col { grid-template-columns: 1fr; gap: 12px; }

    /* Technical - Mobile */
    .tech-tabs { overflow-x: auto; }
    .tech-tab { padding: 12px 16px; font-size: 13px; white-space: nowrap; }
    .tech-subcat-grid { flex-wrap: wrap; gap: 8px; }
    .tech-subcat-card { min-width: 70px; padding: 12px 14px; border-radius: 4px !important; border-left: 1px solid rgba(255,255,255,0.1) !important; }
    .tech-subcat-card + .tech-subcat-card { border-left: 1px solid rgba(255,255,255,0.1) !important; }
    .tech-search-box { width: 100%; margin-left: 0; margin-top: 8px; }
    .tech-pagination { flex-wrap: wrap; gap: 4px; }
    .lamp-pag-btn { min-width: 32px; height: 32px; font-size: 13px; }
    .tech-faq-banner { height: 240px; }
    .tech-faq-banner-text { padding: 24px; }
    .tech-faq-title { font-size: 24px; }
    .tech-service-layout { grid-template-columns: 1fr; gap: 24px; }
    .tech-service-form-row { grid-template-columns: 1fr; }
}

/* ========================================
   PRODUCT DETAIL PAGE - White Theme
   Right-side Fixed Float Nav + Full Layout
   ======================================== */

/* Breadcrumb */
.pd-breadcrumb {
    padding: 14px 0;
    background: #0A0A0A;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-top: 110px;
}

.pd-breadcrumb-inner {
    font-size: 13px;
    color: #999;
}

.pd-breadcrumb-inner a {
    color: #aaa;
    text-decoration: none;
}

.pd-breadcrumb-inner a:hover {
    color: #f5a623;
}

.pd-bc-sep {
    margin: 0 6px;
    color: #ccc;
}

.pd-bc-current {
    color: #ccc;
    font-weight: 500;
}

/* Hero Section - White */
.pd-hero {
    padding: 40px 0 50px;
    background: #0A0A0A;
}

.pd-hero-grid {
    display: grid;
    grid-template-columns: 65% 35%;
    gap: 30px;
    align-items: start;
}

/* Gallery */
.pd-gallery {
    position: sticky;
    top: 110px;
}

.pd-main-img-box {
    position: relative;
    width: 100%;
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.pd-main-img-wrap {
    width: 100%;
    position: relative;
}

.pd-main-slide {
    width: 100%;
    height: auto;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.4s ease;
    display: none;
}

.pd-main-slide.active {
    opacity: 1;
    display: block;
}

/* Arrows */
.pd-img-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(26,26,26,0.9);
    color: #ccc;
    border: 1px solid rgba(255,255,255,0.15);
    font-size: 18px;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.pd-img-arrow-l { left: 8px; }
.pd-img-arrow-r { right: 8px; }

.pd-img-arrow:hover {
    background: #f5a623;
    color: #fff;
    border-color: #f5a623;
}

/* Thumbnails */
.pd-thumb-row {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
}

.pd-thumb-item {
    width: 80px;
    height: 60px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.45;
    border: 2px solid transparent;
    flex-shrink: 0;
    transition: all 0.2s;
}

.pd-thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pd-thumb-item.active {
    opacity: 1;
    border-color: #f5a623;
}

.pd-thumb-item:hover {
    opacity: 0.85;
}

/* Product Info */
.pd-info {
    padding-top: 10px;
}

.pd-product-title {
    margin-bottom: 24px;
}

.pd-title-sub {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: #111;
    margin-bottom: 4px;
    line-height: 1.3;
}

.pd-title-main {
    display: block;
    font-size: 18px;
    font-weight: 400;
    color: #999;
    line-height: 1.4;
}

.pd-features {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.pd-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 5px 0;
    font-size: 14px;
    color: #aaa;
    line-height: 1.6;
}

.pd-feat-arrow {
    color: #f5a623;
    font-size: 9px;
    margin-top: 5px;
    flex-shrink: 0;
}

/* Video Section */
.pd-video-section {
    padding: 0 0 50px;
    background: #0A0A0A;
}

.pd-video-box {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 4px;
    overflow: hidden;
    background: #000;
}

.pd-video-player {
    display: block;
    width: 100%;
    max-height: 500px;
}

/* Main Body - Content + Float Nav */
.pd-main-body {
    padding: 50px 0 80px;
    background: #0A0A0A;
}

.pd-main-grid {
    display: grid;
    grid-template-columns: 1fr 150px;
    gap: 40px;
    align-items: start;
}

.pd-main-content {
    min-width: 0;
}

/* Blocks */
.pd-block {
    margin-bottom: 50px;
    scroll-margin-top: 100px;
}

.pd-block-title {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255,255,255,0.1);
}

/* Params 3-col */
.pd-params-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.pd-param-box-title {
    font-size: 15px;
    font-weight: 700;
    color: #ccc;
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.pd-param-items {
    list-style: disc;
    padding-left: 18px;
    margin: 0;
}

.pd-param-items li {
    font-size: 13px;
    color: #aaa;
    line-height: 1.8;
    margin-bottom: 2px;
}

/* Rich Text Content */
.pd-rich-text {
    color: #ccc;
    line-height: 1.8;
    font-size: 15px;
    overflow-wrap: break-word;
    word-break: break-word;
}

.pd-rich-text img {
    max-width: 100%;
    height: auto;
    margin: 16px 0;
}

/* Image Showcase */
.pd-img-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.pd-img-showcase-item {
    background: transparent;
    border: none;
    padding: 0;
    text-align: center;
    line-height: 0;
}

.pd-img-showcase-item img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    object-fit: contain;
}

/* Download Columns */
.pd-download-cols {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.pd-dl-col-title {
    font-size: 16px;
    font-weight: 600;
    color: #ccc;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.pd-dl-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 6px;
    background: #1a1a1a;
    transition: border-color 0.2s;
}

.pd-dl-row:hover {
    border-color: #f5a623;
}

.pd-dl-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.pd-dl-name {
    font-size: 14px;
    color: #ccc;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pd-dl-date {
    font-size: 12px;
    color: #999;
}

.pd-dl-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: #f5a623;
    transition: color 0.2s;
}

.pd-dl-icon:hover {
    color: #e6951a;
}

.pd-empty-note {
    color: #999;
    font-size: 14px;
    padding: 20px 0;
}

/* Cases Grid */
.pd-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.pd-case-card {
    text-decoration: none;
    border: 1px solid rgba(255,255,255,0.1);
    overflow: hidden;
    transition: border-color 0.2s;
}

.pd-case-card:hover {
    border-color: #f5a623;
}

.pd-case-img {
    overflow: hidden;
    background: transparent;
    line-height: 0;
}

.pd-case-img img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
}

.pd-case-name {
    padding: 10px;
    font-size: 13px;
    color: #ccc;
}

/* Right-side Float Navigation */
.pd-float-nav {
    position: relative;
}

.pd-float-nav-inner {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
    border-left: 3px solid rgba(255,255,255,0.1);
}

.pd-float-nav-inner.fixed {
    position: fixed;
    top: 80px;
    width: 150px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.pd-float-link {
    display: block;
    padding: 12px 16px;
    font-size: 13px;
    color: #999;
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: all 0.2s;
}

.pd-float-link:hover {
    color: #ccc;
    background: rgba(255,255,255,0.04);
}

.pd-float-link.active {
    color: #f5a623;
    background: rgba(245,166,35,0.06);
    border-left-color: #f5a623;
    font-weight: 600;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .pd-params-3col {
        grid-template-columns: repeat(2, 1fr);
    }
    .pd-download-cols {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .pd-hero-grid {
        grid-template-columns: 1fr;
    }
    .pd-gallery {
        position: static;
    }
    .pd-main-grid {
        grid-template-columns: 1fr;
    }
    .pd-float-nav {
        display: none;
    }
    .pd-params-3col {
        grid-template-columns: 1fr;
    }
    .pd-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .pd-title-sub {
        font-size: 22px;
    }
    .pd-title-main {
        font-size: 16px;
    }
    .pd-block-title {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .pd-cases-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== Image Fallback Rules ========== */
.pd-thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.pd-rich-text img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========== Patents Section ========== */
.section-about-patents {
    background: #0a0a0a;
}

.patents-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.patent-card {
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.3s;
}

.patent-card:hover {
    border-color: #f5a623;
}

.patent-img {
    width: 100%;
    overflow: hidden;
    background: #111;
    display: flex;
    align-items: center;
    justify-content: center;
}

.patent-img img {
    width: 100%;
    height: auto;
    display: block;
}

.patent-info {
    padding: 16px;
}

.patent-name {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.4;
}

.patent-no {
    font-size: 13px;
    color: #f5a623;
    margin-bottom: 4px;
}

.patent-date {
    font-size: 12px;
    color: #888;
    margin-bottom: 6px;
}

.patent-desc {
    font-size: 13px;
    color: #aaa;
    line-height: 1.5;
    margin: 0;
}

@media (max-width: 992px) {
    .patents-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 576px) {
    .patents-grid { grid-template-columns: 1fr; }
}

/* ==================== 语言切换器样式 ==================== */
/* PC端语言切换器 */
.nav-lang-switcher {
    position: relative;
    display: inline-block;
}

.nav-lang-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: transparent;
    border: 1px solid rgba(245, 166, 35, 0.3);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #fff;
    font-size: 14px;
}

.nav-lang-btn:hover {
    border-color: #f5a623;
    background: rgba(245, 166, 35, 0.1);
}

.nav-lang-btn .lang-flag {
    width: 24px;
    height: 16px;
    object-fit: cover;
    border-radius: 2px;
}

.nav-lang-btn .lang-name {
    font-size: 13px;
    color: #fff;
}

.nav-lang-btn .lang-arrow {
    font-size: 10px;
    color: #f5a623;
    transition: transform 0.3s ease;
}

.nav-lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #1a1a1a;
    border: 1px solid rgba(245, 166, 35, 0.3);
    border-radius: 8px;
    padding: 8px 0;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.nav-lang-switcher:hover .nav-lang-dropdown,
.nav-lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-lang-switcher:hover .lang-arrow {
    transform: rotate(180deg);
}

.nav-lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #fff;
}

.nav-lang-option:hover {
    background: rgba(245, 166, 35, 0.15);
}

.nav-lang-option.active {
    color: #f5a623;
    background: rgba(245, 166, 35, 0.1);
}

.nav-lang-option .lang-flag {
    width: 24px;
    height: 16px;
    object-fit: cover;
    border-radius: 2px;
}

.nav-lang-option .lang-name {
    font-size: 14px;
}

/* 移动端悬浮按钮 */
.mobile-lang-fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: #f5a623;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 999;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(245, 166, 35, 0.4);
    transition: all 0.3s ease;
}

.mobile-lang-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(245, 166, 35, 0.5);
}

.mobile-lang-fab svg {
    width: 28px;
    height: 28px;
    fill: #0A0A0A;
}

/* 移动端语言面板 */
.mobile-lang-panel {
    position: fixed;
    bottom: 100px;
    right: 30px;
    background: #1a1a1a;
    border: 1px solid rgba(245, 166, 35, 0.3);
    border-radius: 12px;
    padding: 12px 0;
    min-width: 180px;
    z-index: 1000;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.9);
    transition: all 0.3s ease;
}

.mobile-lang-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.mobile-lang-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #fff;
    font-size: 15px;
}

.mobile-lang-option:hover {
    background: rgba(245, 166, 35, 0.15);
}

.mobile-lang-option.active {
    color: #f5a623;
    background: rgba(245, 166, 35, 0.1);
}

.mobile-lang-option .lang-flag {
    width: 28px;
    height: 18px;
    object-fit: cover;
    border-radius: 2px;
}

@media (max-width: 768px) {
    .mobile-lang-fab {
        display: flex;
    }
    .nav-lang-switcher {
        display: none;
    }
}

/* 翻译系统样式重置 */
body {
    top: 0 !important;
    position: static !important;
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-40px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.85); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes widthGrow {
    from { width: 0; }
    to { width: 60px; }
}
@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scroll animate base class */
.anim {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.anim.anim-visible {
    opacity: 1;
    transform: translateY(0);
}

.anim-fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    will-change: opacity, transform;
}
.anim-fade-down {
    opacity: 0;
    transform: translateY(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.anim-fade-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.anim-fade-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.anim-scale {
    opacity: 0;
    transform: scale(0.85);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.anim-fade-up.anim-visible,
.anim-fade-down.anim-visible,
.anim-fade-left.anim-visible,
.anim-fade-right.anim-visible,
.anim-scale.anim-visible {
    opacity: 1;
    transform: none;
}

/* Stagger delays */
.anim-delay-1 { transition-delay: 0.1s; }
.anim-delay-2 { transition-delay: 0.2s; }
.anim-delay-3 { transition-delay: 0.3s; }
.anim-delay-4 { transition-delay: 0.4s; }
.anim-delay-5 { transition-delay: 0.5s; }
.anim-delay-6 { transition-delay: 0.6s; }

/* Card hover lift effect */
.card-hover {
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

/* Image zoom on hover */
.img-zoom {
    overflow: hidden;
}
.img-zoom img {
    transition: transform 0.5s ease;
}
.img-zoom:hover img {
    transform: scale(1.08);
}

/* Overlay reveal on hover */
.card-overlay {
    position: relative;
    overflow: hidden;
}
.card-overlay::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0;
    background: linear-gradient(to top, rgba(245, 166, 35, 0.8), transparent);
    transition: height 0.4s ease;
    pointer-events: none;
    z-index: 2;
}
.card-overlay:hover::after {
    height: 100%;
}

/* Section title underline animation */
.section-title-line {
    position: relative;
    display: inline-block;
    padding-bottom: 12px;
}
.section-title-line::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: #f5a623;
    transition: width 0.5s ease;
}
.section-title-line.anim-visible::after {
    width: 60px;
}

/* Nav link hover animation */
.main-nav a {
    position: relative;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #f5a623;
    transition: width 0.3s ease;
}
.main-nav a:hover::after,
.main-nav a.active::after {
    width: 60%;
}

/* Banner slide content animation */
.banner-slide.active .slide-title,
.banner-slide.active .slide-subtitle {
    animation: fadeInUp 0.8s ease forwards;
}
.banner-slide.active .slide-subtitle {
    animation-delay: 0.2s;
}

/* Page banner title animation */
.page-banner-title {
    animation: fadeInUp 0.8s ease 0.2s both;
}

/* Footer fade in */
.site-footer {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.site-footer.anim-visible {
    opacity: 1;
    transform: none;
}

/* Stats counter animation */
.stat-number {
    display: inline-block;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.stat-number.anim-visible {
    opacity: 1;
    transform: none;
}

/* Home section animations */
.home-section {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.home-section.anim-visible {
    opacity: 1;
    transform: none;
}

/* Product card hover */
.product-card,
.product-card-info {
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}
.product-card:hover .product-card-info {
    background: rgba(30, 30, 30, 0.95);
}

/* News card hover */
.news-card {
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

/* Case card hover */
.case-card {
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.case-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

/* Video card hover */
.video-card {
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.video-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

/* Button hover glow */
.btn-glow {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 166, 35, 0.4);
}

/* Search box animation */
.search-box {
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* Image gallery item */
.gallery-item {
    transition: transform 0.4s ease, opacity 0.4s ease;
}
.gallery-item:hover {
    transform: scale(1.03);
    opacity: 0.9;
}

/* Contact form focus animation */
.contact-form .form-input,
.contact-form .form-textarea {
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.contact-form .form-input:focus,
.contact-form .form-textarea:focus {
    border-color: #f5a623;
    box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}

/* Dropdown animation - only add transition, do not override transform */

/* Scroll to top button */
.scroll-top-btn {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    transform: translateY(20px);
}
.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.scroll-top-btn:hover {
    transform: translateY(-3px) scale(1.05);
}

/* Mobile: disable heavy animations */
@media (max-width: 768px) {
    .anim, .anim-fade-up, .anim-fade-down, .anim-fade-left, .anim-fade-right, .anim-scale,
    .home-section, .site-footer, .stat-number {
        transition-duration: 0.4s;
    }
    .card-hover:hover,
    .product-card:hover,
    .news-card:hover,
    .case-card:hover,
    .video-card:hover {
        transform: translateY(-4px);
    }
}