/* ===================================
   Chemical Industry Corporate Website
   Main Stylesheet
   Primary Color: #dc6f37
   =================================== */

/* CSS Variables */
:root {
    --primary-color: #dc6f37;
    --primary-dark: #c25d2a;
    --primary-light: #e8854f;
    --secondary-color: #1a1a1a;
    --accent-color: #f5f5f5;
    --text-dark: #333333;
    --text-light: #666666;
    --text-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-light: 0 2px 15px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 5px 30px rgba(0, 0, 0, 0.12);
    --shadow-heavy: 0 10px 50px rgba(0, 0, 0, 0.18);
    --gradient-primary: linear-gradient(135deg, #dc6f37 0%, #e8854f 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--text-white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

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

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 14px;
    color: var(--secondary-color);
}

h1 {
    font-size: 2.8rem;
    color: var(--text-white);
}

h2 {
    font-size: 1.8rem;
}

h3 {
    font-size: 1.4rem;
}

h4 {
    font-size: 1.15rem;
}

p {
    margin-bottom: 12px;
    color: var(--text-dark);
    line-height: 1.7;
}

.section-description {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 15px 40px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(220, 111, 55, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(220, 111, 55, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
}

.btn-secondary:hover {
    background: var(--text-white);
    color: var(--secondary-color);
    transform: translateY(-3px);
}

.btn-dark {
    background: var(--secondary-color);
    color: var(--text-white);
}

.btn-dark:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

/* ===================================
   Header & Navigation - Optimized
   Modern, Professional Design
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                backdrop-filter 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                -webkit-backdrop-filter 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* All pages - default header (inner pages): white background */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 18px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.header .nav-link {
    color: var(--text-dark);
    font-weight: 500;
    letter-spacing: 0.3px;
}

.header .nav-link:hover {
    color: var(--primary-color);
}

/* Home page: header overlays hero video - semi-transparent dark */
body.home-page .header {
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 22px 0;
    box-shadow: none;
}

body.home-page .header .nav-link {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 400;
}

/* Scrolled state - same visual for all pages */
.header.scrolled {
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    padding: 15px 0 !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08) !important;
}

.header.scrolled .nav-link {
    color: var(--text-dark) !important;
    font-weight: 500 !important;
}

/* Navbar Layout */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 60px;
    max-width: 1300px;
    margin: 0 auto;
}

/* Keep the menu + language switch group right-aligned on desktop
   (the language button now lives in the top bar, outside the drawer) */
.navbar .nav-menu {
    margin-left: auto;
}

/* Logo Design */
.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.02);
}

.logo-img {
    height: 44px;
    width: auto;
    display: block;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    gap: 35px;
    align-items: center;
    list-style: none;
}

/* Hide mobile contact info on desktop */
.mobile-contact-info {
    display: none;
}

.nav-link {
    color: var(--text-white);
    font-weight: 500;
    position: relative;
    padding: 8px 0;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

.nav-link:hover {
    color: var(--primary-color);
}

/* Active Link Style */
.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* Language switch (top-right of nav) */
.nav-lang-item {
    display: flex;
    align-items: center;
    margin-left: 28px;
}
.nav-lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid var(--primary-color);
    border-radius: 999px;
    font-size: 0.85rem;
    line-height: 1;
    color: var(--primary-color) !important;
    background: transparent;
    transition: background-color 0.25s ease, color 0.25s ease;
}
.nav-lang-switch svg {
    width: 15px;
    height: 15px;
}
.nav-lang-switch:hover {
    background: var(--primary-color) !important;
    color: #fff !important;
}
/* 滚动吸顶状态：覆盖 .header.scrolled .nav-link 的 !important 颜色，保持全站一致 */
.header.scrolled .nav-lang-switch {
    color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
}
.header.scrolled .nav-lang-switch:hover {
    background: var(--primary-color) !important;
    color: #fff !important;
    border-color: var(--primary-color) !important;
}
/* 禁用全局 .nav-link 下划线动画，仅保留背景色与图标反白 */
.nav-lang-switch::after {
    display: none;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 30px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition-fast);
}

/* Home page - mobile menu toggle is white by default */
body.home-page .mobile-menu-toggle span {
    background: var(--text-white);
}

body.home-page .header.scrolled .mobile-menu-toggle span {
    background: var(--text-dark);
}

/* ===================================
   Dropdown Menu - Modern Design
   =================================== */

.dropdown {
    position: relative;
}

.dropdown-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 4px;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.dropdown-icon svg {
    width: 12px;
    height: 12px;
    stroke: currentColor;
    stroke-width: 2.5;
    transition: stroke 0.3s ease;
}

.dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown:hover .dropdown-icon svg {
    stroke: var(--primary-color);
}

/* Dropdown Menu Container */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(12px);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    min-width: 260px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.10),
                0 8px 24px rgba(0, 0, 0, 0.06),
                0 0 0 1px rgba(0, 0, 0, 0.04);
    border-radius: 14px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

/* Arrow indicator */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -7px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 14px;
    height: 14px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: 3px;
    border-left: 1px solid rgba(0, 0, 0, 0.04);
    border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu li a {
    display: flex;
    align-items: center;
    padding: 13px 24px;
    margin: 0 8px;
    border-radius: 8px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 450;
    letter-spacing: 0.2px;
    position: relative;
    transition: all 0.25s ease;
}

.dropdown-menu li a:hover {
    background: rgba(220, 111, 55, 0.06);
    color: var(--primary-color);
    padding-left: 32px;
    font-weight: 500;
}

.dropdown-menu li a::after {
    content: '';
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px;
    height: 18px;
    border-radius: 2px;
    background: var(--primary-color);
    opacity: 0;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.15s ease;
}

.dropdown-menu li a:hover::after {
    transform: translateY(-50%) scaleY(1);
    opacity: 1;
}

/* Active state */
.dropdown-menu li a.active {
    color: var(--primary-color);
    font-weight: 500;
    background: rgba(220, 111, 55, 0.06);
}

.dropdown-menu li a.active::after {
    transform: translateY(-50%) scaleY(1);
    opacity: 1;
}

/* ===== Two-level dropdown (submenu) ===== */
.dropdown-submenu {
    position: relative;
}

.dropdown-submenu > .dropdown-parent-link {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    color: #0b0f19;
}

.dropdown-sub-arrow {
    font-size: 16px;
    color: #94a3b8;
    transition: transform 0.25s ease;
    margin-left: 16px;
}

.dropdown-submenu:hover > .dropdown-parent-link .dropdown-sub-arrow,
.dropdown-submenu:focus-within > .dropdown-parent-link .dropdown-sub-arrow {
    color: var(--primary-color);
    transform: translateX(3px);
}

.dropdown-submenu-list {
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 280px;
    max-height: 70vh;
    overflow-y: auto;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.10),
                0 8px 24px rgba(0, 0, 0, 0.06),
                0 0 0 1px rgba(0, 0, 0, 0.04);
    border-radius: 14px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(8px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
    z-index: 1001;
}

.dropdown-submenu:hover > .dropdown-submenu-list,
.dropdown-submenu:focus-within > .dropdown-submenu-list {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.dropdown-submenu-list li a {
    font-size: 0.88rem;
    padding-left: 22px;
    color: #475569;
    font-weight: 400;
}

.dropdown-submenu-list li a:hover {
    padding-left: 26px;
    color: var(--primary-color);
}

.dropdown-divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
    margin: 8px 16px;
    list-style: none;
}

/* ===================================
   Premium Hero Slider - High-end Design
   =================================== */

.hero-premium {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a1a 0%, #0d1f2d 50%, #1a2833 100%);
    color: #fff;
}

/* Individual Slide - 默认隐藏，由 JS 添加 .active 后才显示 */
.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    z-index: 1;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 即使 .active 没及时加上，slide 也要可见，避免黑屏 */
.hero-slide.active,
.hero-slide:first-child {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

/* Slide Media (Video/Image) */
.slide-media {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    /* 兜底背景 - 图片/视频加载失败时仍然有视觉效果 */
    background: linear-gradient(135deg, #1a1a1a 0%, #0d1f2d 50%, #1a2833 100%);
}

/* 图片完整显示，不裁切（用户要求：显示全图）；激活时缓慢放大 5 秒 */
.slide-media img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.hero-slide.active .slide-media img {
    animation: heroZoom 15s ease-out forwards;
}

/* 视频样式 - 完整显示，不裁剪；激活时缓慢放大 5 秒 */
.slide-media video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    z-index: 0;
}

.hero-slide.active .slide-media video {
    animation: heroZoom 15s ease-out forwards;
}

/* 首页 Hero 背景媒体缓慢放大动效（15 秒，幅度温和） */
@keyframes heroZoom {
    from { transform: scale(1); }
    to   { transform: scale(1.08); }
}

/* 视频所在 slide 的 overlay 调暗一点让视频更明显 */
.hero-slide[data-type="video"] .media-overlay {
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.4) 0%,
        rgba(0, 0, 0, 0.15) 50%,
        rgba(0, 0, 0, 0.4) 100%
    );
}

/* 视频 slide 也显示文案和按钮（不再隐藏，避免首屏黑屏像加载遮罩） */
.hero-slide .slide-content {
    display: block;
}

/* Overlay Effects — 已按需求移除蒙版（不显示暗色遮罩） */
.media-overlay {
    display: none;
}

.media-gradient {
    display: none;
}

/* Slide Content */
.slide-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--text-white);
    max-width: 1100px;
    padding: 0 40px;
}

.content-wrapper {
    animation: contentFadeIn 1.5s ease;
}

@keyframes contentFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Badge */
.hero-badge {
    display: inline-block;
    padding: 12px 30px;
    background: rgba(220, 111, 55, 0.15);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary-light);
    margin-bottom: 40px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Premium Title */
.hero-title-premium {
    font-size: 5.5rem;
    font-weight: 900;
    margin-bottom: 40px;
    line-height: 1.05;
    color: var(--text-white);
    letter-spacing: -2px;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Gradient Text Effect */
.text-gradient-gold {
    background: linear-gradient(135deg, #dc6f37 0%, #e8854f 50%, #f5a66b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* Premium Description */
.hero-description-premium {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 60px;
    line-height: 2;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
    text-shadow: 0 2px 15px rgba(0, 0, 0, 0.5);
}

/* Premium Actions */
.hero-actions-premium {
    display: flex;
    gap: 30px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

/* Premium Primary Button */
.btn-premium-primary {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 20px 50px;
    background: linear-gradient(135deg, #dc6f37 0%, #e8854f 100%);
    color: white;
    border: none;
    border-radius: 60px;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 40px rgba(220, 111, 55, 0.5),
                0 0 0 0 rgba(220, 111, 55, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-premium-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.7s ease;
}

.btn-premium-primary:hover::before {
    left: 100%;
}

.btn-premium-primary:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 60px rgba(220, 111, 55, 0.7),
                0 0 0 8px rgba(220, 111, 55, 0.2);
}

.btn-premium-primary svg {
    transition: transform 0.5s ease;
}

.btn-premium-primary:hover svg {
    transform: translateX(8px);
}

/* Premium Ghost Button */
.btn-premium-ghost {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 20px 50px;
    background: transparent;
    color: white;
    border-radius: 60px;
    font-size: 1.05rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.btn-premium-ghost::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: white;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.btn-premium-ghost:hover::before {
    width: 100%;
}

.btn-premium-ghost:hover {
    color: var(--secondary-color);
    border-color: white;
    transform: translateY(-5px);
}

/* Premium Navigation Controls */
.slider-controls-premium {
    position: absolute;
    bottom: 80px;
    right: 80px;
    display: flex;
    align-items: center;
    gap: 25px;
    z-index: 10;
}

.slider-nav-premium {
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.slider-nav-premium::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.slider-nav-premium:hover::before {
    width: 100%;
    height: 100%;
}

.slider-nav-premium:hover {
    border-color: var(--primary-color);
    transform: scale(1.15);
}

.slider-nav-premium svg {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.slider-nav-premium:hover svg {
    transform: scale(1.1);
}

.slider-prev-premium {
    order: 1;
}

.slider-next-premium {
    order: 3;
}

/* Progress Bar */
.slider-progress-bar {
    order: 2;
    width: 120px;
    height: 3px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 3px;
    transition: width 0.1s linear;
}

/* Elegant Slide Indicators */
.slider-indicators-premium {
    position: absolute;
    bottom: 80px;
    left: 80px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    z-index: 10;
    /* 缓慢出现：加载后延迟淡入 */
    opacity: 0;
    animation: indicatorsReveal 1.6s ease-out 1.4s forwards;
}

@keyframes indicatorsReveal {
    from { opacity: 0; transform: translateX(-14px); }
    to   { opacity: 1; transform: translateX(0); }
}

.indicator {
    display: flex;
    align-items: center;
    gap: 15px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px 0;
    transition: all 0.5s ease;
}

.indicator-number {
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 2px;
    transition: color 0.5s ease;
    min-width: 25px;
}

.indicator.active .indicator-number {
    color: var(--primary-color);
}

.indicator-line {
    width: 40px;
    height: 3px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
    transition: all 0.5s ease;
}

.indicator-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: var(--primary-color);
    border-radius: 3px;
    transition: width 5s linear;
}

.indicator.active .indicator-line {
    width: 80px;
    background: rgba(255, 255, 255, 0.5);
}

.indicator.active .indicator-line::before {
    width: 100%;
}

.indicator:hover .indicator-number {
    color: white;
}

.indicator:hover .indicator-line {
    background: rgba(255, 255, 255, 0.6);
}

/* Sophisticated Scroll Indicator */
.scroll-indicator-premium {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    /* 缓慢出现：加载后延迟淡入 + 轻微上浮 */
    opacity: 0;
    animation: scrollReveal 1.6s ease-out 1.2s forwards;
}

.scroll-line-animated {
    width: 2px;
    height: 60px;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
    animation: scrollPulse 2.5s ease-in-out infinite;
    position: relative;
}

.scroll-line-animated::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    /* 小圆点缓慢出现并循环下滑 */
    opacity: 0;
    animation: scrollDot 2.5s ease-in-out infinite 1.6s,
               dotReveal 1.4s ease-out 1.6s forwards;
}

@keyframes scrollReveal {
    from { opacity: 0; transform: translateX(-50%) translateY(12px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

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

@keyframes scrollPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

@keyframes scrollDot {
    0% { top: 0; opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.scroll-text {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 4px;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
}

/* Responsive Adjustments */
@media (max-width: 1200px) {
    .hero-title-premium {
        font-size: 4.5rem;
    }
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .partner-card {
        padding: 36px 18px 26px;
    }
}

@media (max-width: 1024px) {
    .hero-title-premium {
        font-size: 3.8rem;
    }
    
    .slider-controls-premium {
        bottom: 60px;
        right: 40px;
    }
    
    .slider-indicators-premium {
        bottom: 60px;
        left: 40px;
    }
}

@media (max-width: 768px) {
    .hero-title-premium {
        font-size: 3rem;
        letter-spacing: -1px;
    }
    
    .hero-description-premium {
        font-size: 1.2rem;
        line-height: 1.8;
    }
    
    .hero-actions-premium {
        flex-direction: column;
        gap: 20px;
    }
    
    .btn-premium-primary,
    .btn-premium-ghost {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }
    
    .slider-controls-premium {
        bottom: 40px;
        right: 20px;
        gap: 15px;
    }
    
    .slider-nav-premium {
        width: 55px;
        height: 55px;
    }
    
    .slider-progress-bar {
        width: 80px;
    }
    
    .slider-indicators-premium {
        bottom: 40px;
        left: 20px;
        flex-direction: row;
    }
    
    .indicator-line {
        width: 25px;
    }
    
    .indicator.active .indicator-line {
        width: 50px;
    }
    
    .scroll-indicator-premium {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title-premium {
        font-size: 2.3rem;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 10px 20px;
    }
    
    .slider-controls-premium {
        display: none;
    }
}

/* Page Banner */
.page-banner {
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-dark);
    margin-top: 80px;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(220, 111, 55, 0.2);
}

.page-banner-content {
    text-align: center;
    color: var(--text-white);
    z-index: 1;
}

.page-banner-title {
    font-size: 2rem;
    margin-bottom: 8px;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--primary-color);
}

/* Sections */
.section {
    padding: 100px 0;
    overflow: hidden;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.section-subtitle {
    color: var(--text-light);
    font-weight: 300;
    font-size: 1rem;
    letter-spacing: 0.3px;
    line-height: 1.6;
    margin-top: 0;
    margin-bottom: 0;
}

.section-title {
    color: #0b0f19;
    margin-bottom: 24px;
    font-size: 3.6rem;
    font-weight: 900;
    letter-spacing: -2px;
    position: relative;
    padding-left: 28px;
    line-height: 1.08;
    text-rendering: optimizeLegibility;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* Sub-pages: remove left accent bar from section-header titles */
.section-header .section-title::before {
    display: none;
}

.section-header .section-title {
    padding-left: 0;
}

.section-description {
    max-width: 680px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.about-image:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

.about-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.about-content h3 {
    color: var(--secondary-color);
    margin-bottom: 18px;
    font-size: 1.8rem;
    line-height: 1.3;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}

.stat-item {
    text-align: center;
    padding: 24px 20px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #f5f5f5 100%);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-medium);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-top: 4px;
}

/* ===================================
   About Preview - Premium Redesign
   =================================== */

.about-grid-premium {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 40px;
}

/* Left: Image wrap with decorations */
.about-image-wrap {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
    transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.about-image-wrap:hover {
    transform: translateY(-10px);
    box-shadow: 0 35px 80px rgba(0, 0, 0, 0.2);
}

.about-image-main {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
}

.about-image-main img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    display: block;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.about-image-wrap:hover .about-image-main img {
    transform: scale(1.08);
}

.about-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
    pointer-events: none;
    transition: height 0.5s ease;
}

.about-image-wrap:hover .about-image-overlay {
    height: 60%;
}

/* Floating stats card */
.about-stats-card {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    padding: 18px 24px;
    z-index: 2;
    animation: floatStat 6s ease-in-out infinite;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.25);
}

@keyframes floatStat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.stats-card-inner {
    display: flex;
    gap: 24px;
    align-items: center;
}

.stat-mini {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-mini-value {
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
}

.stat-mini-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.stat-mini-suffix {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-mini-label {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-top: 4px;
    white-space: nowrap;
    font-weight: 500;
}

.stat-mini-divider {
    width: 1px;
    height: 32px;
    background: linear-gradient(to bottom, transparent, var(--border-color), transparent);
}

/* Right: Content */
.about-content-premium {
    padding-left: 0;
    padding-top: 16px;
    padding-bottom: 16px;
}

.about-content-premium .btn-premium-primary {
    margin-top: 24px;
}

.about-content-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(220, 111, 55, 0.15), rgba(220, 111, 55, 0.05));
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 18px;
    box-shadow: 0 4px 12px rgba(220, 111, 55, 0.1);
}

.about-content-title {
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--secondary-color);
    line-height: 1.25;
    margin-bottom: 22px;
    letter-spacing: -1px;
}

.text-gradient-gold {
    background: linear-gradient(135deg, var(--primary-color), #e67e22);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content-text {
    color: var(--text-light);
    font-size: 1.08rem;
    line-height: 1.9;
    margin-bottom: 20px;
}

/* Feature list */
.about-features {
    margin-top: 28px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.about-feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
    padding: 24px 16px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #f9f9f9 100%);
    border-radius: 16px;
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.about-feature-item:hover {
    background: rgba(220, 111, 55, 0.08);
    transform: translateX(8px);
    box-shadow: 0 8px 24px rgba(220, 111, 55, 0.12);
}

.about-feature-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: linear-gradient(135deg, var(--primary-color), #e67e22);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 8px 24px rgba(220, 111, 55, 0.35);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 4px;
}

.about-feature-item:hover .about-feature-icon {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px rgba(220, 111, 55, 0.45);
}

.about-feature-text {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.about-feature-text strong {
    font-size: 0.95rem;
    color: var(--secondary-color);
    font-weight: 700;
    margin-bottom: 4px;
}

.about-feature-text span {
    font-size: 0.82rem;
    color: var(--text-light);
    line-height: 1.4;
}

/* Products Section */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 36px;
}

.product-card {
    background: var(--text-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 24px 70px rgba(220, 111, 55, 0.18);
}

.product-image {
    height: 260px;
    overflow: hidden;
    position: relative;
    background: #f5f5f5;
    margin-top: -4px; /* 抵消顶部边框 */
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
    box-sizing: border-box;
    background: #fff;
    transition: var(--transition-medium);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(220, 111, 55, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-fast);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-content {
    padding: 28px 32px 36px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-title {
    color: var(--secondary-color);
    margin-bottom: 12px;
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.product-description {
    font-size: 0.92rem;
    margin-bottom: 18px;
    line-height: 1.7;
    color: var(--text-light);
    min-height: 4.6rem;
    flex-shrink: 0;
}

/* ===================================
   Products List Page (products.html)
   =================================== */
.product-filters {
    text-align: center;
    margin-bottom: 36px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.product-filter-btn {
    padding: 10px 24px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
}

.product-filter-btn.active {
    background: var(--primary-color);
    color: white;
}

.product-filter-btn:hover:not(.active) {
    background: rgba(220, 111, 55, 0.08);
}

/* Group title between filter buttons (mobile) */
.product-filter-group-title {
    width: 100%;
    padding: 10px 14px;
    margin-top: 8px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #0b0f19;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.product-filter-group-title:first-child,
.product-filter-group-title:first-of-type {
    margin-top: 4px;
}

/* ===================================
   Mobile Filter Dropdown
   =================================== */
.product-filters-mobile {
    display: none;
    position: relative;
    z-index: 10;
}

.filter-mobile-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 12px 18px;
    background: #fff;
    border: 1.5px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    cursor: pointer;
    font-family: inherit;
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.25s ease;
}

.filter-mobile-trigger:hover {
    border-color: rgba(220, 111, 55, 0.4);
}

.filter-mobile-trigger.open {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(220, 111, 55, 0.08);
    border-radius: 12px 12px 0 0;
}

.filter-mobile-current {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--secondary-color);
}

.filter-mobile-arrow {
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    opacity: 0.45;
    stroke: var(--primary-color);
}

.filter-mobile-trigger.open .filter-mobile-arrow {
    transform: rotate(180deg);
    opacity: 0.85;
}

.filter-mobile-panel {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 20;
    background: #fff;
    border: 1.5px solid var(--primary-color);
    border-top: 1px solid rgba(220, 111, 55, 0.15);
    border-radius: 0 0 12px 12px;
    overflow-y: auto;
    max-height: 66vh;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.14);
    padding: 6px 0;
}

.filter-mobile-panel.open {
    display: block;
}

/* ── "All Products" button (clean flat header) ── */
.filter-mobile-panel .product-filter-btn--all {
    display: block;
    width: 100%;
    text-align: left;
    padding: 14px 18px;
    margin: 0;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--primary-color);
    border: none;
    border-radius: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    transition: background 0.18s ease;
}

.filter-mobile-panel .product-filter-btn--all.active,
.filter-mobile-panel .product-filter-btn--all:active {
    background: rgba(220, 111, 55, 0.12);
}

/* ── Clickable group title (clean section header) ── */
.filter-mobile-group {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.filter-mobile-group:last-child {
    border-bottom: none;
}

.filter-mobile-group-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 14px 18px;
    margin: 0;
    font-size: 0.9rem;
    font-weight: 700;
    color: #0b0f19;
    background: #f7f9fc;
    border: none;
    border-left: 4px solid var(--primary-color);
    border-radius: 0;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    min-height: 48px;
    transition: background 0.2s ease;
}

.filter-mobile-group-title:hover,
.filter-mobile-group-title:active {
    background: rgba(220, 111, 55, 0.09);
}

.filter-mobile-group-title .group-title-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, opacity 0.3s ease;
    font-size: 11px;
    opacity: 0.45;
    flex-shrink: 0;
}

.filter-mobile-group.open .group-title-arrow {
    transform: rotate(180deg);
    opacity: 1;
}

/* ── Group body (collapsible, tinted to show grouping) ── */
.filter-mobile-group-body {
    max-height: 0;
    overflow: hidden;
    background: rgba(220, 111, 55, 0.05);
    transition: max-height 0.32s ease;
}

.filter-mobile-group.open .filter-mobile-group-body {
    max-height: 1200px;
}

/* ── Child buttons (flat list items, fully reset from .product-filter-btn) ── */
.filter-mobile-group-body .product-filter-btn {
    display: block;
    width: 100%;
    text-align: left;
    padding: 12px 18px 12px 34px;
    margin: 0;
    font-size: 0.85rem;
    font-weight: 500;
    color: #374151;
    background: transparent;
    border: none;
    border-radius: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.65);
    cursor: pointer;
    font-family: inherit;
    min-height: 44px;
    transition: background 0.18s ease, color 0.18s ease;
}

.filter-mobile-group-body .product-filter-btn:first-child {
    border-top: none;
}

.filter-mobile-group-body .product-filter-btn:hover {
    background: rgba(220, 111, 55, 0.10);
    color: var(--primary-color);
}

.filter-mobile-group-body .product-filter-btn.active {
    background: rgba(220, 111, 55, 0.14);
    color: var(--primary-color);
    font-weight: 700;
}

.filter-mobile-overlay {
    position: fixed;
    inset: 0;
    z-index: 15;
    background: transparent;
}

/* Products List Section — consistent with other sub-pages */
.products-list-section {
    padding: 80px 0;
}

/* Product Card Grid */
.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 960px;
    margin: 0 auto;
}

.product-list-item {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
    cursor: pointer;
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    content-visibility: auto;
    contain-intrinsic-size: 320px;
}

/* Top accent line that matches the category badge color, unifying the card with the badge */
.product-list-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: transparent;
    z-index: 3;
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
    display: none;
}
.product-list-item.industrial::before { background: var(--primary-color); }
.product-list-item.specialty::before { background: #2ecc71; }
.product-list-item.green::before { background: #3498db; }
.product-list-item.blue::before { background: #3b82f6; }
.product-list-item.amber::before { background: #f59e0b; }
.product-list-item.purple::before { background: #8b5cf6; }

/* Keep inner link clickable above card click handler */
.product-list-link {
    position: relative;
    z-index: 2;
}

.product-list-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 48px rgba(220, 111, 55, 0.15);
    border-color: rgba(220, 111, 55, 0.2);
}

.product-list-item.filtered-out {
    display: none !important;
}

.product-list-img {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #f8f8fa;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    position: relative;
    overflow: hidden;
}

.product-list-img img,
.product-list-img .product-list-noimg {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
    display: block;
}
.product-list-img .product-list-noimg {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f8fa;
    padding: 20px;
}
.product-list-img .product-list-noimg svg {
    max-width: 80%;
    max-height: 80%;
}

.product-list-item:hover .product-list-img img {
    transform: scale(1.08);
}

/* Category badge overlaid on image */
.product-list-category {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 5px 14px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: white;
    z-index: 2;
    background: #e8854f;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .15);
    text-shadow: 0 1px 2px rgba(0, 0, 0, .2);
    display: none;
}

.product-list-category.industrial {
    background: var(--primary-color);
}

.product-list-category.specialty {
    background: #2ecc71;
}

.product-list-category.green {
    background: #3498db;
}

.product-list-category.blue {
    background: #3b82f6;
}

.product-list-category.amber {
    background: #f59e0b;
}

/* .product-list-category.purple {
    background: #8b5cf6;
} */

.product-list-category.cat-more {
    left: auto;
    right: 12px;
    background: rgba(15, 23, 42, .6);
    font-size: 0.66rem;
    padding: 4px 9px;
    display: none;
}

.product-list-info {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-list-model {
    color: var(--secondary-color);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.product-list-name {
    color: #0b0f19;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-list-desc {
    color: var(--text-light);
    font-size: 0.82rem;
    line-height: 1.55;
    margin-bottom: auto;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-list-meta {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
    font-size: 0.78rem;
    color: var(--text-light);
    padding-top: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.product-list-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.meta-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--primary-color);
    opacity: 0.7;
    flex-shrink: 0;
}

.product-list-link {
    display: inline-block;
    width: 100%;
    text-align: center;
    margin-top: 14px;
    padding: 10px 0;
    background: transparent;
    color: var(--primary-color);
    border: 1.5px solid var(--primary-color);
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.product-list-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

/* Product Card Grid Responsive */
@media (max-width: 1024px) {
    .product-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
}
@media (max-width: 900px) {
    .product-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 640px) {
    .products-list-section {
        padding: 36px 0 30px;
    }

    .products-list-section .section-header {
        margin-bottom: 14px;
    }

    .product-filters-mobile {
        display: block;
        margin-bottom: 14px;
    }

    .filter-mobile-trigger {
        padding: 10px 14px;
        border-radius: 8px;
    }

    .filter-mobile-trigger.open {
        border-radius: 8px 8px 0 0;
    }

    .filter-mobile-current {
        font-size: 0.82rem;
    }

    .filter-mobile-panel {
        border-radius: 0 0 8px 8px;
        max-height: 50vh;
    }

    .filter-mobile-group-title {
        padding: 9px 14px;
        font-size: 0.82rem;
        min-height: 40px;
    }

    .filter-mobile-group-body .product-filter-btn {
        padding: 9px 14px 9px 30px;
        font-size: 0.8rem;
        min-height: 40px;
    }

    .filter-mobile-panel .product-filter-btn--all {
        padding: 10px 14px;
        font-size: 0.84rem;
    }

    .product-list {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .product-list-img {
        padding: 14px;
    }

    .product-list-info {
        padding: 10px 12px 12px;
    }

    .product-list-name {
        font-size: 0.9rem;
        margin-bottom: 4px;
    }

    .product-list-desc {
        font-size: 0.72rem;
        line-height: 1.4;
    }

    .product-list-meta {
        margin-top: 5px;
        padding-top: 5px;
        font-size: 0.68rem;
    }

    .product-list-link {
        margin-top: 7px;
        padding: 6px 0;
        font-size: 0.76rem;
    }
}

@media (max-width: 480px) {
    .products-list-section {
        padding: 30px 0 28px;
    }

    .products-list-section .section-header {
        margin-bottom: 10px;
    }

    .product-filters-desktop {
        display: none;
    }

    .product-filters-mobile {
        display: block;
        margin-bottom: 12px;
    }

    .filter-mobile-trigger {
        padding: 9px 13px;
        border-radius: 8px;
    }

    .filter-mobile-trigger.open {
        border-radius: 8px 8px 0 0;
    }

    .filter-mobile-current {
        font-size: 0.78rem;
    }

    .filter-mobile-panel {
        border-radius: 0 0 8px 8px;
        max-height: 44vh;
    }

    .filter-mobile-group-title {
        padding: 8px 12px;
        font-size: 0.78rem;
        min-height: 38px;
    }

    .filter-mobile-group-body .product-filter-btn {
        padding: 8px 12px 8px 28px;
        font-size: 0.76rem;
        min-height: 38px;
    }

    .filter-mobile-panel .product-filter-btn--all {
        padding: 9px 13px;
        font-size: 0.8rem;
    }

    .product-list {
        gap: 7px;
    }

    .product-list-img {
        padding: 10px;
    }

    .product-list-category {
        top: 6px;
        left: 6px;
        padding: 3px 8px;
        font-size: 0.6rem;
    }

    .product-list-category.cat-more {
        left: auto;
        right: 6px;
    }

    .product-list-info {
        padding: 9px 11px 12px;
    }

    .product-list-model {
        font-size: 0.68rem;
        margin-bottom: 3px;
    }

    .product-list-name {
        font-size: 0.84rem;
        margin-bottom: 3px;
    }

    .product-list-desc {
        font-size: 0.68rem;
        line-height: 1.4;
    }

    .product-list-meta {
        margin-top: 5px;
        padding-top: 5px;
        font-size: 0.64rem;
        gap: 6px;
    }

    .product-list-link {
        margin-top: 6px;
        padding: 5px 0;
        font-size: 0.74rem;
    }
}

/* News Section */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 36px;
}

.news-card {
    background: var(--text-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    content-visibility: auto;
    contain-intrinsic-size: 360px;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.news-image {
    height: 260px;
    overflow: hidden;
    background: linear-gradient(135deg, #2d2d2d 0%, #1a2833 100%);
    position: relative;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.news-card:hover .news-image img {
    transform: scale(1.08);
}

/* Date badge overlay on image */
.news-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.5), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 1;
}

.news-card:hover .news-image::after {
    opacity: 1;
}

.news-content {
    padding: 28px 28px 36px;
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.news-date {
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    display: inline-block;
    padding-left: 20px;
    position: relative;
}

.news-date::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 12px;
    height: 1px;
    background: var(--primary-color);
}

.news-title {
    color: var(--secondary-color);
    margin-bottom: 14px;
    font-size: 1.15rem;
    font-weight: 800;
    line-height: 1.45;
    letter-spacing: -0.3px;
    transition: color 0.3s ease;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card:hover .news-title {
    color: var(--primary-color);
}

.news-excerpt {
    font-size: 0.92rem;
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--text-light);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.read-more {
    position: relative;
    z-index: 2;
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: gap 0.3s ease, color 0.3s ease;
    margin-top: auto;
}

.read-more:hover {
    gap: 14px;
    color: var(--primary-color);
}

/* CTA Section - Premium V3 */
.cta-section {
    background: var(--secondary-color);
    padding: 100px 0 120px;
    position: relative;
    overflow: hidden;
}

.cta-section .section-eyebrow {
    margin-bottom: 50px;
}

.eyebrow-light {
    color: rgba(255,255,255,0.85);
}

.eyebrow-light::before {
    background: rgba(255,255,255,0.5);
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
}

.cta-section::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 60%, rgba(220, 111, 55, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 40%, rgba(220, 111, 55, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.cta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.cta-section .section-title,
.cta-text h2 {
    color: #fff;
    margin-bottom: 20px;
}

.cta-section .section-title::before {
    background: rgba(220, 111, 55, 0.6);
}

.cta-text p {
    color: rgba(255,255,255,0.8);
    font-size: 1.15rem;
    line-height: 1.8;
    max-width: 460px;
}

.cta-form form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cta-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.cta-form input,
.cta-form textarea {
    width: 100%;
    padding: 16px 20px;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 2px;
    font-size: 0.9rem;
    font-family: inherit;
    background: rgba(255,255,255,0.08);
    color: white;
    transition: border-color 0.3s, background 0.3s;
    box-sizing: border-box;
}

.cta-form input::placeholder,
.cta-form textarea::placeholder {
    color: rgba(255,255,255,0.5);
    font-weight: 300;
}

.cta-form input:focus,
.cta-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255,255,255,0.08);
}

.cta-form textarea {
    resize: vertical;
    min-height: 80px;
}

/* Inline field error */
.cta-form .has-error {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.cta-form .field-error-msg {
    display: block;
    color: #fca5a5;
    font-size: 0.78rem;
    margin-top: 4px;
    padding-left: 4px;
    animation: fieldErrorIn 0.25s ease;
    line-height: 1.3;
}

@keyframes fieldErrorIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.cta-submit-btn {
    align-self: flex-start;
    font-size: 0.85rem;
    padding: 16px 40px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: 2px;
    border: none;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: all 0.4s ease;
}

.cta-submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(220, 111, 55, 0.3);
}

/* Section Backgrounds - Premium Alternating */
.products-preview-section {
    background: 
        linear-gradient(135deg, rgba(255,240,232,0.93) 0%, rgba(255,248,245,0.93) 40%, rgba(255,240,232,0.93) 100%),
        url('images/uploads/photo-1532094349884-543bc11b234d.jpg') center/cover no-repeat fixed;
    position: relative;
    overflow: hidden;
    padding: 100px 0 80px;
}

.products-preview-section::before {
    content: '';
    position: absolute;
    top: -100px; left: -100px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(220,111,55,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.news-preview-section {
    background: #fff;
    position: relative;
    overflow: hidden;
    padding-top: 120px;
    padding-bottom: 100px;
}

.news-preview-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.06), transparent);
}

.news-preview-section::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(220,111,55,0.04) 0%, transparent 70%);
    pointer-events: none;
}

/* View All Center */
.view-all-center {
    text-align: center;
    margin-top: 80px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    padding: 30px;
    background: var(--accent-color);
    border-radius: 16px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--text-white);
    border-radius: 12px;
    transition: var(--transition-fast);
}

.contact-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-light);
}

.contact-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-form {
    padding: 30px;
    background: var(--text-white);
    border-radius: 16px;
    box-shadow: var(--shadow-light);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(220, 111, 55, 0.1);
}

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

/* Footer - Premium V3 */
.footer {
    background: #151515;
    color: var(--text-white);
    padding: 80px 0 20px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: white;
    letter-spacing: 1px;
}

.footer-description {
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 24px;
    font-size: 0.88rem;
    line-height: 1.8;
    max-width: 380px;
}

.footer-social {
    display: flex;
    gap: 12px;
    display: none;
}

.social-link {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.5);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
}

.footer-title {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: white;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.35);
    transition: all 0.3s ease;
    font-size: 0.88rem;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 6px;
}

.footer-contact-item {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.35);
    font-size: 0.88rem;
    align-items: flex-start;
    line-height: 1.6;
}

.footer-contact-item svg {
    flex-shrink: 0;
    margin-top: 3px;
    color: rgba(255,255,255,0.2);
    transition: color 0.3s ease;
}

.footer-contact-item:hover svg {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    z-index: 999;
    box-shadow: 0 4px 15px rgba(220, 111, 55, 0.4);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
}

/* ============================================
   V3 PREMIUM REDESIGN
   High-end editorial layout
   ============================================ */

/* --- Shared Utility: Eyebrow Label --- */
.eyebrow {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 5px;
    color: var(--primary-color);
    text-transform: uppercase;
    margin-bottom: 18px;
    position: relative;
    padding-left: 40px;
}

.eyebrow::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 28px;
    height: 1px;
    background: var(--primary-color);
}

.section-eyebrow {
    margin-bottom: 80px;
}

.section-eyebrow .section-title {
    margin-bottom: 14px;
}

.section-eyebrow .section-subtitle {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.6;
    margin-top: 12px;
    max-width: 600px;
}

/* --- Outline Button --- */
.btn-premium-outline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 36px;
    background: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
    border-radius: 2px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.btn-premium-outline:hover {
    background: var(--secondary-color);
    color: #fff;
    border-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.btn-premium-outline span {
    transition: transform 0.3s ease;
}

.btn-premium-outline:hover span {
    transform: translateX(4px);
}

/* --- Underline Link --- */
.link-underline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--secondary-color);
    position: relative;
    padding-bottom: 4px;
    transition: all 0.3s ease;
}

.link-underline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.35s ease;
}

.link-underline:hover::after {
    width: 100%;
}

.link-underline:hover {
    color: var(--primary-color);
}

/* ============================================
   1. About Section Top Transition
   ============================================ */
.about-integrated::before {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.08), transparent);
    margin-bottom: 100px;
}

/* ============================================
   2. About Split Layout
   ============================================ */
.about-integrated {
    padding: 0 0 100px;
    background: #fff;
}

.about-split {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 100px;
    align-items: start;
}

.about-split-image {
    position: relative;
    min-width: 0;
}

.about-img-frame {
    position: relative;
    z-index: 2;
    overflow: hidden;
    border-radius: 2px;
    box-shadow: 0 30px 80px rgba(0,0,0,0.12);
    background: linear-gradient(135deg, #f5f0eb 0%, #e8e0d8 50%, #d4c8b8 100%);
}

.about-img-frame img {
    width: 100%;
    height: 580px;
    object-fit: cover;
    display: block;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.about-img-accent {
    position: absolute;
    top: 40px;
    right: -30px;
    width: 120px;
    height: 120px;
    background: var(--primary-color);
    z-index: 1;
    opacity: 0.08;
}

.about-split-content {
    padding-top: 20px;
    min-width: 0;
    overflow-wrap: break-word;
    word-break: break-word;
}

.about-integrated .section-eyebrow {
    margin-bottom: 36px;
}

.about-integrated .section-title {
    word-break: break-word;
    overflow-wrap: break-word;
}

.about-split-text {
    font-size: 1.05rem;
    line-height: 2;
    color: var(--text-light);
    margin-bottom: 20px;
    max-width: 620px;
    overflow-wrap: break-word;
    word-break: break-word;
}

.about-split-metrics {
    display: flex;
    gap: 48px;
    margin: 40px 0 36px;
}

.split-metric {
    display: flex;
    flex-direction: column;
}

.split-metric-value {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--secondary-color);
    letter-spacing: -0.5px;
}

.split-metric-desc {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-top: 4px;
    letter-spacing: 0.5px;
}

/* ============================================
   3. Products Alternating Layout
   ============================================ */
.products-alt-section {
    padding: 120px 0 100px;
    background: #fafafa;
    position: relative;
    overflow: hidden;
}

.products-alt-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 0% 100%, rgba(220,111,55,0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 0%, rgba(220,111,55,0.03) 0%, transparent 50%);
    pointer-events: none;
}

.products-alt-list {
    display: flex;
    flex-direction: column;
    gap: 120px;
    position: relative;
    z-index: 1;
}

.product-alt-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.product-alt-row.reverse .product-alt-image {
    order: 2;
}

.product-alt-row.reverse .product-alt-body {
    order: 1;
}

.product-alt-image {
    position: relative;
    overflow: hidden;
    border-radius: 2px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.product-alt-image:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 80px rgba(0,0,0,0.18);
}

.product-alt-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    display: block;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.product-alt-row:hover .product-alt-image img {
    transform: scale(1.06);
}

.product-alt-body {
    padding: 20px 0;
}

.product-alt-num {
    font-size: 5rem;
    font-weight: 900;
    color: rgba(220,111,55,0.08);
    line-height: 1;
    display: block;
    margin-bottom: -10px;
    letter-spacing: -4px;
    -webkit-user-select: none;
    user-select: none;
}

.product-alt-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 20px;
    letter-spacing: -1px;
    line-height: 1.3;
}

.product-alt-desc {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-light);
    margin-bottom: 28px;
    max-width: 480px;
}

/* ============================================
   4. Industries Horizontal Blinds Layout
   ============================================ */
.industries-blind-section {
    padding: 80px 0 100px 0;
    background: #fff;
    position: relative;
    overflow: hidden;
}

.industries-blind-section .section-eyebrow .eyebrow {
    color: #dc6f37;
}

.industries-blind-section .section-title {
    color: #111;
}

.industries-blind-section .section-subtitle {
    color: #555;
}

/* ========== Blind Container: Full-width Flex Row ========== */
.blind-container {
    margin-top: 50px;
    display: flex;
    flex-direction: row;
    position: relative;
    height: 700px;
    width: 100%;
    max-width: 100%;
}

/* ========== Blind Item: Proportional fill, no fixed px ========== */
.blind-item {
    position: relative;
    flex: 1 1 0;
    min-width: 60px;
    overflow: hidden;
    cursor: pointer;
    transition: flex-grow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-right: 2px solid #d0d5dd;
    isolation: isolate;
    will-change: flex-grow;
}

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

.blind-item:hover,
.blind-item.active {
    flex-grow: 5;
}

/* ========== Background Image ========== */
.blind-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-color: #1a2535;
    /* 仅过渡 transform，filter 保持静态（避免逐帧重绘大图导致卡顿），并用 GPU 合成层 */
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1.05);
    filter: brightness(0.85) saturate(0.9);
    will-change: transform;
    backface-visibility: hidden;
}

.blind-item:hover .blind-bg,
.blind-item.active .blind-bg {
    transform: scale(1);
    filter: brightness(0.95) saturate(1);
}

/* ========== Grey semi-transparent overlay for text legibility ========== */
.blind-gradient {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: linear-gradient(to top, rgba(20,24,33,0.55) 0%, rgba(20,24,33,0.25) 55%, rgba(20,24,33,0.15) 100%);
    transition: background 0.4s ease;
}

.blind-item:hover .blind-gradient,
.blind-item.active .blind-gradient {
    background: linear-gradient(to top, rgba(20,24,33,0.78) 0%, rgba(20,24,33,0.5) 55%, rgba(20,24,33,0.32) 100%);
}

/* ========== Content Frame: Vertical Stack ========== */
.blind-frame {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 30px 14px 40px;
    gap: 10px;
}

/* ========== Anchor: num+title always visible at bottom ========== */
.blind-anchor {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    flex-shrink: 0;
}

/* ========== Number ========== */
.blind-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: rgba(255,255,255,0.35);
    letter-spacing: 2px;
    line-height: 1;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
    transition: color 0.4s ease, font-size 0.4s ease, text-shadow 0.4s ease;
    writing-mode: horizontal-tb;
}

.blind-item:hover .blind-num,
.blind-item.active .blind-num {
    color: #dc6f37;
    font-size: 3rem;
    text-shadow: 0 2px 12px rgba(0,0,0,0.6);
}

/* ========== Title - vertical in compact, horizontal on expand ========== */
.blind-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
    margin: 0;
    line-height: 1.3;
    text-shadow: 0 2px 8px rgba(0,0,0,0.7);
    writing-mode: vertical-rl;
    text-orientation: mixed;
    white-space: nowrap;
    height: 220px;
    overflow: hidden;
    /* writing-mode 无法平滑过渡，直接瞬时切换避免 1s 重排卡顿；其余属性短过渡 */
    transition: font-size 0.4s ease, letter-spacing 0.4s ease;
}

.blind-item:hover .blind-title,
.blind-item.active .blind-title {
    writing-mode: horizontal-tb;
    color: #fff;
    font-size: 1.9rem;
    letter-spacing: 0;
    white-space: normal;
    height: auto;
    overflow: visible;
    text-shadow: 0 2px 12px rgba(0,0,0,0.8);
}

/* ========== Expand Block — collapsed by default, expands below on hover ========== */
.blind-expand {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.45s ease 0.05s,
                transform 0.45s cubic-bezier(0.4, 0, 0.2, 1) 0.05s;
}

.blind-item:hover .blind-expand,
.blind-item.active .blind-expand {
    max-height: 260px;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    margin-top: 12px;
}

/* ========== Description ========== */
.blind-desc {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
    margin: 0;
    max-width: 420px;
}

/* ========== Tags ========== */
.blind-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.blind-tags span {
    padding: 5px 14px;
    font-size: 0.72rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 3px;
    letter-spacing: 0.5px;
    white-space: nowrap;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transition: all 0.35s ease;
}

.blind-item:hover .blind-tags span,
.blind-item.active .blind-tags span {
    background: rgba(220,111,55,0.18);
    border-color: rgba(220,111,55,0.4);
    color: var(--primary-color);
}

/* Carousel dots — hidden on desktop, shown on mobile via media queries */
.carousel-dots {
    display: none;
}

/* ============================================
   5. Partners Premium — Logo Carousel
   ============================================ */
.partners-premium {
    padding: 120px 0 100px;
    background: #fff;
    position: relative;
    overflow: hidden;
}

.partners-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    max-width: 800px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.1), transparent);
}

.partners-premium .section-eyebrow {
    margin-bottom: 70px;
}

.partners-premium .section-title {
    font-size: 3.6rem;
}

/* --- Carousel container --- */
.partners-carousel {
    width: 100%;
    overflow: hidden;
    position: relative;
    mask-image: linear-gradient(
        to right,
        transparent 0%,
        black 10%,
        black 90%,
        transparent 100%
    );
    -webkit-mask-image: linear-gradient(
        to right,
        transparent 0%,
        black 10%,
        black 90%,
        transparent 100%
    );
}

/* --- Scrolling track --- */
.partners-track {
    display: flex;
    gap: 40px;
    width: max-content;
    padding: 10px 0;
    animation: partnersScroll 40s linear infinite;
}

.partners-carousel:hover .partners-track {
    animation-play-state: paused;
}

/* --- Individual logo item --- */
.partner-logo-item {
    flex-shrink: 0;
    width: 150px;
    padding: 16px;
    border-radius: 12px;
    background: #fafbfc;
    border: 1px solid #eef0f2;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.3s ease;
}
.partner-logo-item img {
    max-height: 80px;
}
.partner-logo-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.08);
    border-color: rgba(220,111,55,0.25);
}

.partner-logo-svg {
    width: 120px;
    height: auto;
    display: block;
}

/* --- Infinite scroll keyframes --- */
@keyframes partnersScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* ===================================
   Section Dividers - Wave & Curve
   =================================== */
.section-divider {
    position: relative;
    width: 100%;
    height: 80px;
    overflow: hidden;
    pointer-events: none;
    z-index: 2;
}

.section-divider-dark {
    background: #0a0a0a;
}

.section-divider-light {
    background: #fafafa;
}

.section-divider-white {
    background: #ffffff;
}

.section-divider svg {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 100%;
}

.section-divider-bottom svg {
    top: 0;
    bottom: auto;
    transform: rotate(180deg);
}

/* ============================================
   V3 Premium Responsive
   ============================================ */
@media (max-width: 1024px) {
    .container {
        padding: 0 24px;
    }

    .section {
        padding: 70px 0;
    }

    .products-list-section {
        padding: 60px 0;
    }

    .section-header, .section-eyebrow {
        margin-bottom: 50px;
    }

    .section-title {
        font-size: 2.5rem;
    }

    /* About split */
    .about-split {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    .about-img-frame img {
        height: 400px;
    }

    /* Products alt */
    .product-alt-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .product-alt-row.reverse .product-alt-image {
        order: -1;
    }
    .products-alt-list {
        gap: 80px;
    }
    .product-alt-image img {
        height: 320px;
    }
    .product-alt-num {
        font-size: 3.5rem;
        margin-bottom: -4px;
    }
    .product-alt-title {
        font-size: 1.6rem;
    }

    /* Industries blind */
    .blind-container {
        height: calc(100vh - 120px);
        min-height: 10px;
    }
  
    .blind-item:hover,
    .blind-item.active {
        flex-grow: 4.5;
    }
    .blind-frame {
        padding: 22px 10px 30px;
        gap: 8px;
    }
    .navbar {
    padding-left: 30px;
}
    .blind-num {
        font-size: 1.8rem;
    }
    .blind-item:hover .blind-num,
    .blind-item.active .blind-num {
        font-size: 2.2rem;
    }
    .blind-title {
        font-size: 0.8rem;
        letter-spacing: 1px;
    }
    .blind-item:hover .blind-title,
    .blind-item.active .blind-title {
        font-size: 1.2rem;
    }
    .blind-desc {
        font-size: 0.82rem;
        max-width: 280px;
    }
    .blind-tags span {
        padding: 4px 10px;
        font-size: 0.68rem;
    }

    /* Partners ticker */
    .partners-ticker {
        gap: 32px;
    }
    .partner-brand {
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .section {
        padding: 38px 0;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .section-header, .section-eyebrow {
        margin-bottom: 28px;
    }

    /* About */
    .about-integrated {
        padding: 0 0 40px;
    }
    .about-integrated::before {
        display: none;
    }
    .about-img-frame img {
        height: 300px;
    }
    .about-split-metrics {
        gap: 18px;
        flex-wrap: wrap;
    }
    .about-img-accent {
        display: none;
    }

    /* Products alt */
    .products-alt-section {
        padding: 40px 0;
    }
    .products-alt-list {
        gap: 36px;
    }
    .product-alt-image img {
        height: 260px;
    }
    .product-alt-num {
        font-size: 2.8rem;
    }
    .product-alt-title {
        font-size: 1.4rem;
    }
    .product-alt-desc {
        font-size: 0.95rem;
    }

    /* Products List Page — tablet spacing */
    .products-list-section {
        padding: 50px 0 40px;
    }

    .products-list-section .section-header {
        margin-bottom: 22px;
    }

    .product-filters-mobile {
        display: block;
        margin-bottom: 18px;
        width: 100%;
    }

    .product-filter-btn {
        padding: 6px 15px;
        font-size: 0.74rem;
    }

    .product-list {
        gap: 10px;
    }

    .product-list-info {
        padding: 10px 12px 13px;
    }

    .product-list-desc {
        font-size: 0.74rem;
    }

    .product-list-meta {
        margin-top: 6px;
        padding-top: 6px;
        font-size: 0.7rem;
    }

    .product-list-link {
        margin-top: 8px;
        padding: 6px 0;
        font-size: 0.8rem;
    }

    /* Industries — polished card carousel on mobile */
    .industries-blind-section {
        padding: 32px 0 0;
        position: relative;
    }
    .blind-container {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        gap: 16px;
        height: auto;
        margin-top: 20px;
        padding: 4px calc((100vw - min(85vw, 360px)) / 2) 24px;
        scrollbar-width: none;
    }
    .blind-container::-webkit-scrollbar {
        display: none;
    }
    .blind-item {
        flex: 0 0 min(85vw, 360px);
        min-width: auto;
        height: 260px;
        border-right: none;
        border-radius: 16px;
        overflow: hidden;
        cursor: default;
        position: relative;
        scroll-snap-align: center;
        box-shadow: 0 4px 24px rgba(0,0,0,0.35);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .blind-item:hover,
    .blind-item.active {
        flex: 0 0 min(85vw, 360px);
    }
    /* Background image treatment */
    .blind-bg {
        transform: scale(1.08);
        filter: brightness(0.45) saturate(0.85);
        transition: transform 6s ease;
    }
    .blind-item:hover .blind-bg,
    .blind-item.active .blind-bg {
        transform: scale(1);
        filter: brightness(0.6) saturate(1);
    }
    /* Gradient overlay — strong bottom fade */
    .blind-gradient {
        opacity: 1;
        background: linear-gradient(
            180deg,
            rgba(0,0,0,0.2) 0%,
            rgba(0,0,0,0.1) 25%,
            rgba(0,0,0,0.25) 50%,
            rgba(0,0,0,0.6) 75%,
            rgba(0,0,0,0.85) 100%
        );
    }
    .blind-item:hover .blind-gradient,
    .blind-item.active .blind-gradient {
        opacity: 1;
    }
    /* Content frame */
    .blind-frame {
        padding: 0 18px 18px;
        gap: 8px;
        justify-content: flex-end;
    }
    /* Number — large decorative badge */
    .blind-num {
        font-size: 2.6rem;
        font-weight: 900;
        writing-mode: horizontal-tb;
        position: absolute;
        top: 10px;
        left: 16px;
        color: rgba(220,111,55,0.45);
        letter-spacing: 3px;
        line-height: 1;
        text-shadow: none;
        transition: color 0.4s ease;
    }
    .blind-item:hover .blind-num,
    .blind-item.active .blind-num {
        font-size: 2.6rem;
        color: rgba(220,111,55,0.8);
        text-shadow: 0 2px 20px rgba(220,111,55,0.3);
    }
    /* Title */
    .blind-title {
        writing-mode: horizontal-tb;
        font-size: 1.05rem;
        font-weight: 700;
        letter-spacing: -0.3px;
        white-space: normal;
        text-shadow: 0 2px 8px rgba(0,0,0,0.7);
        margin-bottom: 0;
        height: auto;
        overflow: visible;
    }
    .blind-item:hover .blind-title,
    .blind-item.active .blind-title {
        font-size: 1.05rem;
        letter-spacing: -0.3px;
        white-space: normal;
        text-shadow: 0 2px 8px rgba(0,0,0,0.7);
    }
    /* Expand block always visible */
    .blind-expand {
        position: static;
        width: auto;
        margin-bottom: 0;
        opacity: 1;
        transform: none;
        pointer-events: auto;
        gap: 8px;
    }
    .blind-anchor {
        position: static;
        height: auto;
    }
    .blind-desc {
        font-size: 0.78rem;
        max-width: none;
        line-height: 1.5;
        color: rgba(255,255,255,0.85);
    }
    .blind-tags {
        gap: 6px;
    }
    .blind-tags span {
        padding: 3px 10px;
        font-size: 0.66rem;
        background: rgba(220,111,55,0.12);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: 4px;
        color: rgba(255,255,255,0.85);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }
    /* Carousel dots */
    .carousel-dots {
        display: flex;
        justify-content: center;
        gap: 8px;
        padding: 0 0 16px;
        margin-top: 4px;
    }
    .carousel-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: rgb(0 0 0 / 25%);
        border: none;
        cursor: pointer;
        padding: 0;
        transition: all 0.3s ease;
    }
    .carousel-dot.active {
        background: #dc6f37;
        width: 24px;
        border-radius: 4px;
        box-shadow: 0 0 10px rgba(220,111,55,0.4);
    }

    /* Partners */
    .partners-premium {
        padding: 50px 0 40px;
    }
    .partners-premium .section-title {
        font-size: 2.2rem;
    }
    .partners-premium .section-eyebrow {
        margin-bottom: 30px;
    }
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .partner-card {
        padding: 22px 14px 18px;
    }
    .partner-name {
        font-size: 0.9rem;
    }

    /* Keep old grids for other pages */
    .products-grid, .news-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .view-all-center {
        margin-top: 30px;
    }
    .product-image {
        height: 200px;
    }
    .news-image {
        height: 220px;
    }
    .product-content {
        padding: 18px 18px 22px;
    }
    .news-content {
        padding: 18px 18px 22px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .section {
        padding: 30px 0;
    }

    /* About */
    .about-split-metrics {
        gap: 12px;
    }
    .split-metric-value {
        font-size: 0.95rem;
    }

    /* Products alt */
    .product-alt-image img {
        height: 220px;
    }
    .product-alt-num {
        font-size: 2.2rem;
    }
    .product-alt-title {
        font-size: 1.2rem;
    }

    /* Industries — smaller carousel cards */
    .industries-blind-section {
        padding: 28px 0 0;
    }
    .blind-container {
        gap: 12px;
        margin-top: 16px;
        padding: 2px calc((100vw - min(88vw, 300px)) / 2) 20px;
    }
    .blind-item {
        flex: 0 0 min(88vw, 300px);
        height: 220px;
        border-radius: 14px;
    }
    .blind-frame {
        padding: 0 14px 14px;
        gap: 6px;
    }
    .blind-num {
        font-size: 2.2rem;
        top: 8px;
        left: 14px;
        letter-spacing: 2px;
    }
    .blind-item:hover .blind-num,
    .blind-item.active .blind-num {
        font-size: 2.2rem;
    }
    .blind-title {
        font-size: 0.95rem;
    }
    .blind-item:hover .blind-title,
    .blind-item.active .blind-title {
        font-size: 0.95rem;
    }
    .blind-expand {
        gap: 6px;
        max-height: none;
        overflow: visible;
        margin-top: 0;
        margin-bottom: 0;
    }
    .blind-anchor {
        position: static;
        height: auto;
    }
    .blind-desc {
        font-size: 0.72rem;
        line-height: 1.45;
    }
    .blind-tags {
        gap: 4px;
    }
    .blind-tags span {
        padding: 2px 8px;
        font-size: 0.62rem;
    }
    .carousel-dot {
        width: 7px;
        height: 7px;
    }
    .carousel-dot.active {
        width: 20px;
    }

    /* Partners carousel */
    .partners-premium {
        padding: 36px 0 30px;
    }
    .partners-premium .section-title {
        font-size: 1.8rem;
    }
    .partners-premium .section-eyebrow {
        margin-bottom: 24px;
    }
    .partner-logo-item {
        width: 100px;
        padding: 10px;
    }
    .partner-logo-svg {
        width: 70px;
    }
    .partners-track {
        gap: 12px;
    }
}

/* ===================================
   Responsive Design (Original)
   =================================== */
@media (max-width: 1024px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.2rem; }

    .section-header {
        margin-bottom: 50px;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .products-grid,
    .news-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 28px;
    }

    .product-image {
        height: 240px;
    }

    .product-content {
        padding: 24px 24px 28px;
    }
    .news-image {
        height: 220px;
    }
    .news-content {
        padding: 22px 22px 28px;
    }

    .about-grid,
    .about-grid-premium,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-image-wrap {
        max-width: 550px;
        margin: 0 auto;
    }

    .about-stats-card {
        left: 10px;
        bottom: -10px;
        padding: 12px 16px;
    }

    .about-content-premium {
        padding-left: 0;
    }

    .about-content-title {
        font-size: 1.4rem;
    }

    .section {
        padding: 70px 0;
    }

    .cta-content h2 {
        font-size: 2.2rem;
    }

    .cta-content p {
        font-size: 1.05rem;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}
#blindDots {
    display: none;
}
@media (max-width: 768px) {
    /* Container tight on mobile */
    .container {
        padding: 0 20px;
    }

    /* Header Mobile */
    .header {
        padding: 12px 0;
                width: 100vw;
    }
    .navbar {
        padding: 0 28px;
    }
    /* Unify the mobile header across ALL pages (incl. home) so it matches the
       inner pages: a solid white bar instead of the home page's transparent
       hero overlay. (Desktop home keeps its transparent overlay by design.) */
    body.home-page .header {
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
        padding: 14px 0;
    }
    body.home-page .header .nav-link {
        color: var(--text-dark);
        font-weight: 500;
    }
    .header.scrolled {
        padding: 10px 0 !important;
    }
    .logo-img {
        max-width: 130px;
        height: auto;
    }

    /* Mobile Menu Toggle Button */
    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        width: 40px;
        height: 40px;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 1002;
        position: relative;
    }

    .mobile-menu-toggle span {
        width: 24px;
        height: 2px;
        background: var(--text-dark);
        border-radius: 2px;
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                    background 0.3s ease;
        transform-origin: center;
    }

    body.home-page .mobile-menu-toggle span {
        background: var(--text-dark) !important;
    }

    body.home-page .header.scrolled .mobile-menu-toggle span {
        background: var(--text-dark);
    }

    /* Hamburger to X animation - adjusted for 2px height + 5px gap = 7px offset */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
        background: #1a1a1a;
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
        background: #1a1a1a;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
        background: #1a1a1a;
    }

    /* ============ Mobile Menu Overlay & Panel ============ */

    /* Backdrop overlay */
    .nav-menu::after {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.6);
        -webkit-backdrop-filter: blur(4px);
        backdrop-filter: blur(4px);
        z-index: -1;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-menu.active::after {
        opacity: 1;
    }

    /* Mobile Menu Panel */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85vw;
        max-width: 380px;
        height: 100vh;
        height: 100dvh;
        background: #fff;
        flex-direction: column;
        padding: 96px 0 32px 0;
        transition: right 0.45s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        overflow-x: hidden;
        box-shadow: -4px 0 48px rgba(0, 0, 0, 0.10);
        gap: 0;
        display: flex;
    }

    .nav-menu.active {
        right: 0;
    }

    /* Mobile Menu Header - Logo area */
    .nav-menu::before {
        content: '';
        display: block;
        width: 140px;
        height: 38px;
        margin: 0 28px 24px;
        padding-bottom: 22px;
        background: url('../images/logo.png') no-repeat left center / contain;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    }

    /* Mobile Menu Items */
    .nav-menu > li {
        margin: 0;
        list-style: none;
        width: 100%;
        opacity: 0;
        transform: translateX(30px);
        transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    }

    /* Staggered entrance animation */
    .nav-menu.active > li {
        opacity: 1;
        transform: translateX(0);
    }
    .nav-menu.active > li:nth-child(1) { transition-delay: 0.08s; }
    .nav-menu.active > li:nth-child(2) { transition-delay: 0.14s; }
    .nav-menu.active > li:nth-child(3) { transition-delay: 0.20s; }
    .nav-menu.active > li:nth-child(4) { transition-delay: 0.26s; }
    .nav-menu.active > li:nth-child(5) { transition-delay: 0.32s; }
    .nav-menu.active > li:nth-child(6) { transition-delay: 0.38s; }
    .nav-menu.active > li:nth-child(7) { transition-delay: 0.44s; }

    /* Nav Links — base */
    .nav-link {
        display: flex;
        align-items: center;
        gap: 0;
        padding: 17px 32px 17px 28px;
        color: #1a1a1a !important;
        font-size: 1.05rem;
        font-weight: 500;
        letter-spacing: 0.3px;
        position: relative;
        border-left: 3px solid transparent;
        /* Only transition visual properties — NOT layout (padding/gap/border-width) */
        transition: color 0.25s ease,
                    background-color 0.25s ease,
                    border-left-color 0.25s ease,
                    padding-left 0.25s ease;
    }

    /* Left-edge vertical bar indicator — flush left */
    .nav-link::after {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 0;
        background: var(--primary-color);
        border-radius: 0 3px 3px 0;
        opacity: 0;
        transition: height 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.25s ease;
    }

    .nav-link:hover::after {
        height: 0%;
        opacity: 1;
    }

    /* Hide dot indicator (rely on left-edge bar for active states) */
    .nav-menu > li:not(.mobile-contact-info) > .nav-link::before {
        display: none;
    }

    /* Dropdown parent link */
    .dropdown > .nav-link {
        padding-right: 52px;
    }

    .nav-link:hover {
        color: var(--primary-color) !important;
        background: rgba(220, 111, 55, 0.04);
        border-left-color: var(--primary-color);
        padding-left: 34px;
    }

    .nav-link.active {
        color: var(--primary-color) !important;
        font-weight: 600;
        border-left-color: var(--primary-color);
        padding-left: 34px;
        background: rgba(220, 111, 55, 0.04);
    }

    .nav-link.active::after {
    }

    /* When dropdown is open AND nav-link is active, show full bar */
    .dropdown.active > .nav-link::after {
        height: 100%;
        opacity: 0.5;
        top: 0;
        z-index: -99;
        transform: none;
    }

    /* Collapse cleanup — avoid a lingering "selected" effect on collapse:
       1) When a dropdown is NOT open, kill the open-bar transition so the
          orange block disappears instantly instead of shrinking over 0.3s.
       2) When the whole drawer is collapsed, strip the current-page "active"
          highlight so the nav doesn't appear to keep a chosen item.
       3) When a dropdown is closed, fully hide its submenu (no sliver of
          second-level peeking through) and kill its margin so the row collapses
          flush with the next menu item. */
    .dropdown:not(.active) > .nav-link::after {
        transition: none !important;
    }
    .nav-menu:not(.active) .nav-link.active,
    .nav-menu:not(.active) .dropdown:not(.active) > .nav-link.active {
        color: #1a1a1a !important;
        font-weight: 500;
        border-left-color: transparent !important;
        padding-left: 28px !important;
        background: transparent !important;
    }
    .nav-menu:not(.active) .nav-link.active::after {
        height: 0 !important;
        opacity: 0 !important;
        background: transparent !important;
    }
    /* When the drawer is collapsed, fully hide the first/second-level menus
       (display:none) so no sliver, padding or "selected" block remains. */
    .nav-menu:not(.active) .dropdown-menu,
    .nav-menu:not(.active) .dropdown-submenu-list {
        display: none !important;
        max-height: 0 !important;
        opacity: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }

    /* Hide desktop pseudo-elements on mobile (::after now reused for slide bar) */
    /* Override any conflicting ::before/::after rules from desktop */

    /* ===================================
       Mobile Dropdown Menu - In-flow Expand
       =================================== */
    .dropdown {
        position: relative;
        flex-wrap: wrap;
    }

    .dropdown-menu {
        position: static;
        width: auto;
        flex: 1 1 100%;
        display: block;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: visible;
        /* Chrome (bg / border / shadow) starts transparent so it can FADE IN
           smoothly while the height eases open — this removes the "box pops in
           then stretches" stiffness. */
        background: transparent;
        margin: 0;
        border-radius: 10px;
        border: 1px solid transparent;
        box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0);
        /* Isolate layout + paint so animating max-height does NOT force the
           whole page (header / nav) to relayout & repaint every frame. This is
           the key fix for the <768px expand/collapse jank. */
        contain: layout paint;
        transition: opacity 0.28s ease,
                    margin 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .dropdown-menu.show {
        max-height: none;          /* automatic height — no max-height animation */
        opacity: 1;
        visibility: visible;
        overflow: hidden;
        margin: 8px 16px;
        background: #f8f9fa;
        border-radius: 10px;
        border: 1px solid rgba(0, 0, 0, 0.04);
        box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.03);
    }
    /* On mobile, a collapsed dropdown menu is fully hidden (display:none),
       whether the whole drawer is closed OR just this single dropdown is
       collapsed. The JS adds .show / .active *before* expand() reads
       scrollHeight, so opening still animates. */
    .dropdown-menu:not(.show),
    .dropdown-submenu:not(.active) > .dropdown-submenu-list {
        display: none;
    }
    .dropdown-menu.show,
    .dropdown-submenu.active > .dropdown-submenu-list {
        display: block;
    }
    .dropdown:hover .dropdown-menu {
    transform: translateX(0%) translateY(0)!important;
 
}

.dropdown-submenu > .dropdown-parent-link {
 
    padding-right: 33px !important;
}
    .dropdown-menu li {
        list-style: none;
    }
.dropdown-submenu.active > .dropdown-submenu-list li {
    border-bottom: 1px solid #d7d7d7;
}
    .dropdown-menu li a {
        display: flex;
        align-items: center;
        padding: 12px 24px 12px 32px;
        color: #374151;
        font-size: 0.93rem;
        font-weight: 400;
        letter-spacing: 0.2px;
        text-decoration: none;
        position: relative;
        transition: color 0.2s ease,
                    background-color 0.2s ease,
                    padding-left 0.2s ease;
        border-left: 3px solid transparent;
    }

    /* Left-edge bar indicator for submenu items */
    .dropdown-menu li a::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%) scaleY(0);
        width: 3px;
        height: 14px;
        border-radius: 0 3px 3px 0;
        background: var(--primary-color);
        opacity: 0;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.25s ease;
    }

    .dropdown-menu li a:hover,
    .dropdown-menu li a:active {
        color: var(--primary-color);
        background: rgba(220, 111, 55, 0.06);
        padding-left: 38px;
        border-left-color: rgba(220, 111, 55, 0.3);
    }

    .dropdown-menu li a:hover::before,
    .dropdown-menu li a:active::before {
        transform: translateY(-50%) scaleY(1);
        opacity: 1;
    }

    /* Dropdown parent arrow rotation */
    .dropdown > .nav-link .dropdown-icon {
        transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
    }

    .dropdown.active > .nav-link .dropdown-icon {
        transform: rotate(180deg);
    }

    .dropdown.active > .nav-link .dropdown-icon svg {
        stroke: var(--primary-color);
    }

    .dropdown-menu li a.active {
        color: var(--primary-color);
        font-weight: 500;
    }

    .dropdown-menu li a.active::before {
        transform: translateY(-50%) scaleY(1);
        opacity: 1;
    }

    /* Remove old desktop pseudo-elements on mobile */
    .dropdown-menu::before,
    .dropdown-menu li a::after {
        display: none;
    }

    .dropdown-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        margin-left: auto;
        color: rgba(0, 0, 0, 0.3);
        border-radius: 6px;
        background: transparent;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    color 0.25s ease,
                    background-color 0.25s ease;
        flex-shrink: 0;
    }

    .dropdown-icon svg {
        width: 12px;
        height: 12px;
    }

    .dropdown.active .dropdown-icon {
        transform: rotate(180deg);
        color: var(--primary-color);
        background: rgba(220, 111, 55, 0.08);
    }

    /* ============ Mobile Contact Info Section ============ */
    .mobile-contact-info {
        display: block;
        margin-top: auto !important;
        padding: 20px 0 0;
        width: 100%;
        background: linear-gradient(180deg, transparent 0%, #f8f9fa 40%);
    }

    .mobile-contact-divider {
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(0,0,0,0.06), rgba(0,0,0,0.1), rgba(0,0,0,0.06), transparent);
        margin: 0 32px 16px;
        opacity: 0.7;
    }

    .mobile-contact-item {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 13px 32px;
        color: #6b7280;
        text-decoration: none;
        font-size: 0.88rem;
        font-weight: 400;
        letter-spacing: 0.2px;
        transition: color 0.3s ease, background-color 0.3s ease, padding-left 0.3s ease;
        border-left: 3px solid transparent;
        border-radius: 0 6px 6px 0;
    }

    .mobile-contact-item:hover {
        color: var(--primary-color);
        background: rgba(220, 111, 55, 0.05);
        border-left-color: var(--primary-color);
        padding-left: 38px;
    }

    .mobile-contact-item svg {
        flex-shrink: 0;
        width: 18px;
        height: 18px;
        opacity: 0.45;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .mobile-contact-item:hover svg {
        opacity: 1;
        transform: scale(1.1);
    }

    /* Menu overlay pseudo-element position fix for after */
    .nav-menu.active > .mobile-contact-info {
        opacity: 1;
        transform: translateX(0);
        transition-delay: 0.44s;
    }

    /* ============ Mobile Dropdown-Submenu (nested) ============ */
    .dropdown-submenu {
        position: relative;
        flex-wrap: wrap;
    }

    .dropdown-submenu-list {
        position: static;
        width: auto;
        display: block;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: visible;
        transform: none;
        list-style: none;
        min-width: auto;
        z-index: auto;
        /* No chrome when closed — transparent so it can fade in smoothly. */
        background: transparent;
        border-radius: 6px;
        border-left: 2px solid transparent;
        box-shadow: none;
        margin: 0;
        padding: 0;
        contain: layout paint;
        transition: opacity 0.28s ease,
                    margin 0.35s cubic-bezier(0.22,0.61,0.36,1);
    }

    .dropdown-submenu.active > .dropdown-submenu-list {
        max-height: none;          /* automatic height — no max-height animation */
        opacity: 1;
        margin: 6px 12px 8px 4px;
        visibility: visible;
        transform: none;
        background: #f0f2f5;
        border-radius: 6px;
        border-left: 2px solid rgba(220,111,55,0.15);
        box-shadow: inset 0 1px 3px rgba(0,0,0,0.04);
    }

    .dropdown-submenu-list li a {
        display: flex;
        align-items: center;
        padding: 11px 20px 11px 32px;
        font-size: 0.85rem;
        color: #4b5563;
        font-weight: 400;
        letter-spacing: 0.2px;
        text-decoration: none;
        border-left: 2px solid transparent;
        transition: color 0.25s ease,
                    background-color 0.25s ease,
                    padding-left 0.25s ease,
                    border-left-color 0.25s ease;
        position: relative;
    }

    .dropdown-submenu-list li a::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%) scaleY(0);
        width: 2px;
        height: 12px;
        border-radius: 0 2px 2px 0;
        background: var(--primary-color);
        opacity: 0;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.25s ease;
    }

    .dropdown-submenu-list li a:hover,
    .dropdown-submenu-list li a:active {
        color: var(--primary-color);
        background: rgba(220,111,55,0.06);
        padding-left: 38px;
        border-left-color: rgba(220,111,55,0.25);
    }

    .dropdown-submenu-list li a:hover::before,
    .dropdown-submenu-list li a:active::before {
        transform: translateY(-50%) scaleY(1);
        opacity: 1;
    }

    .dropdown-sub-arrow {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-left: auto;
        width: 24px;
        height: 24px;
        border-radius: 6px;
        background: rgba(0, 0, 0, 0.04);
        color: rgba(0, 0, 0, 0.28);
        transition: transform 0.35s cubic-bezier(0.4,0,0.2,1),
                    background 0.3s ease,
                    color 0.3s ease;
        flex-shrink: 0;
        font-size: 14px;
        font-weight: 600;
    }

    .dropdown-submenu.active > a .dropdown-sub-arrow {
        transform: rotate(90deg);
        background: rgba(220,111,55,0.12);
        color: var(--primary-color);
    }

    .dropdown-parent-link {
        cursor: pointer;
        font-weight: 500;
        color: #374151 !important;
        font-size: 0.93rem;
        padding-right: 48px !important;
        letter-spacing: 0.2px;
    }

    .dropdown-parent-link:hover {
        color: var(--primary-color) !important;
    }

    /* ===== Language switch — sits in the top bar on mobile ===== */
    .nav-lang-item {
        width: auto;
        margin-left: auto;
        padding: 0 2px;
    }
    .nav-lang-switch {
        display: inline-flex !important;
        align-items: center;
        gap: 6px;
        padding: 7px 13px !important;
        margin: 0;
        width: auto;
        color: var(--primary-color) !important;
        background: transparent !important;
        border: 1px solid var(--primary-color) !important;
        border-radius: 999px;
        font-size: 0.8rem;
        line-height: 1;
        letter-spacing: 0.3px;
    }
    .nav-lang-switch::after {
        display: none !important;
    }
    .nav-lang-switch:hover {
        background: var(--primary-color) !important;
        color: #fff !important;
        padding-left: 13px !important;
    }

    /* Hero Section Adjustments */
    .hero-title { font-size: 2.2rem; }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    /* Grid Adjustments */
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    /* About Premium Mobile */
    .about-grid-premium {
        gap: 16px;
    }

    .about-image-main img {
        height: 320px;
    }

    .about-stats-card {
        position: relative;
        bottom: auto;
        left: auto;
        margin-top: -20px;
        margin-left: 12px;
        margin-right: 12px;
        padding: 12px;
    }

    .stats-card-inner {
        gap: 8px;
    }

    .stat-mini-number {
        font-size: 1.5rem;
    }

    .stat-mini-label {
        font-size: 0.72rem;
    }

    .about-content-title {
        font-size: 1.3rem;
    }

    .about-features {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .about-feature-item {
        flex-direction: row;
        text-align: left;
        padding: 14px;
        gap: 10px;
    }

    .about-feature-icon {
        width: 42px;
        height: 42px;
        min-width: 42px;
        border-radius: 12px;
    }

    .about-feature-icon svg {
        width: 20px;
        height: 20px;
    }

    .about-feature-text {
        align-items: flex-start;
    }

    /* Section Headers Mobile */
    .section-header {
        margin-bottom: 24px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    /* Product & News Cards Mobile - keep for inner pages */
    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    /* CTA Mobile */
    .cta-section {
        padding: 40px 0;
    }

    .cta-grid {
        grid-template-columns: 1fr;
        gap: 22px;
    }

    .cta-section .section-title {
        font-size: 1.8rem;
        text-align: left;
    }

    .cta-text p {
      
        font-size: 1rem; text-align: left;
    }
.cta-section .section-eyebrow {
    margin-bottom: 0;
}
    .cta-form-row {
        grid-template-columns: 1fr;
    }

    .cta-submit-btn {
        align-self: stretch;
    }

    /* Section Adjustments */
    .section {
        padding: 38px 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .page-banner {
        height: 150px;
        margin-top: 55px;
    }

    .page-banner-title {
        font-size: 1.6rem;
    }

}

@media (max-width: 480px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.4rem; }

    .hero-title { font-size: 1.8rem; }
    .hero-subtitle { font-size: 0.95rem; }

    .hero-buttons {
        gap: 10px;
    }

    .section {
        padding: 30px 0;
    }

    .section-header {
        margin-bottom: 18px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        font-size: 0.85rem;
    }

    .btn {
        padding: 10px 24px;
        font-size: 0.82rem;
    }

    /* Product & News Grid */
    .products-grid,
    .news-grid {
        gap: 14px;
    }

    .product-card,
    .news-card {
        border-radius: 16px;
    }

    .product-card-body,
    .news-content {
        padding: 14px;
    }

    .product-title,
    .news-title {
        font-size: 0.95rem;
    }

    .product-desc,
    .news-excerpt {
        font-size: 0.8rem;
    }

    /* CTA */
    .cta-section {
        padding: 30px 0;
    }

    .cta-grid {
        gap: 18px;
    }

    .cta-section .section-title {
        font-size: 1.5rem;
    }

    .cta-text p {
        font-size: 0.9rem;
    }

    .cta-form input,
    .cta-form textarea {
        padding: 12px 14px;
        font-size: 0.85rem;
    }

    .cta-form-row {
        gap: 10px;
    }

    /* Footer */
    .footer {
        padding: 30px 0 20px;
    }

    .footer-grid {
        gap: 16px;
    }

    .footer-col h3 {
        font-size: 1rem;
    }

    .footer-col p,
    .footer-col li {
        font-size: 0.8rem;
    }

    .social-links {
        gap: 8px;
    }

    .social-link {
        width: 36px;
        height: 36px;
    }

    .social-link svg {
        width: 16px;
        height: 16px;
    }

    .footer-bottom {
        padding-top: 16px;
        margin-top: 20px;
        font-size: 0.72rem;
    }

    /* Partners */
    .partners-section {
        padding: 24px 0;
    }

    .partners-grid {
        gap: 14px;
    }

    /* About Premium */
    .about-grid-premium {
        gap: 12px;
    }

    .about-image-main img {
        height: 260px;
    }

    .about-content-title {
        font-size: 1.2rem;
    }

    .about-features {
        gap: 6px;
    }

    .about-feature-item {
        padding: 10px;
        gap: 8px;
    }

    .about-feature-icon {
        width: 36px;
        height: 36px;
        min-width: 36px;
    }

    .about-stats {
        gap: 8px;
    }

    /* Page Banner */
    .page-banner {
        height: 120px;
        margin-top: 50px;
    }

    .page-banner-title {
        font-size: 1.2rem;
    }

    .breadcrumb {
        font-size: 0.75rem;
    }

    /* Contact Page */
    .contact-grid {
        gap: 18px;
    }

    .contact-info-card {
        padding: 18px;
    }

    .contact-form-card {
        padding: 18px;
    }

    /* Detail Pages */
    .detail-wrap {
        padding: 0 4px;
    }

    .detail-title {
        font-size: 1.5rem;
    }

    .detail-meta {
        gap: 12px;
    }

    .article-body {
        font-size: 0.95rem;
    }

    /* Stats Card */
    .about-stats-card {
        padding: 10px;
        margin-left: 8px;
        margin-right: 8px;
        margin-top: -14px;
    }

    .stats-card-inner {
        gap: 6px;
    }

    .stat-mini-number {
        font-size: 1.3rem;
    }

    .stat-mini-label {
        font-size: 0.68rem;
    }
}

/* ============================================
   V4 SUB-PAGE UPGRADE — Premium Editorial Style
   ============================================ */

/* --- 1. Enhanced Page Banner --- */
.page-banner {
    height: 280px;
    background: linear-gradient(135deg, #1e3c5e 0%, #28527a 40%, #1e3c5e 100%);
    background-size: 100% 100%;
    position: relative;
    overflow: hidden;
    /* 内页 banner 整片背景缓慢放大动效（15 秒循环） */
    animation: bannerBgZoom 15s ease-in-out infinite alternate;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(220,111,55,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, rgba(220,111,55,0.08) 0%, transparent 50%);
    pointer-events: none;
    /* 内页 banner 背景光晕缓慢放大动效（15 秒循环，幅度温和） */
    animation: bannerZoom 15s ease-in-out infinite alternate;
}

/* 内页 Banner 背景整片缓慢放大（15 秒，幅度温和） */
@keyframes bannerBgZoom {
    from { background-size: 100% 100%; }
    to   { background-size: 112% 112%; }
}

/* 内页 Banner 光晕层缓慢放大（15 秒，幅度温和） */
@keyframes bannerZoom {
    from { transform: scale(1); }
    to   { transform: scale(1.15); }
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.page-banner-title {
    font-size: 2.6rem;
    font-weight: 900;
    letter-spacing: -1px;
    margin-bottom: 10px;
}

.breadcrumb {
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
    letter-spacing: 0.5px;
}

.breadcrumb a {
    color: var(--primary-color);
    transition: color 0.3s;
}

.breadcrumb a:hover {
    color: var(--primary-light);
}

/* --- 2. Detail Layout (Product & News Detail) --- */
.detail-wrap {
    max-width: 100%;
    margin: 0 auto;
}

.detail-header {
    margin-bottom: 40px;
}

.detail-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.detail-date {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.detail-category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 4px 14px;
    background: rgba(220,111,55,0.08);
    border-radius: 2px;
}

.detail-title {
    font-size: 2.6rem;
    font-weight: 900;
    color: var(--secondary-color);
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 0;
}

/* Tag Pills */
.tag-pills {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.tag-pill {
    padding: 6px 18px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: 2px;
    background: rgba(0,0,0,0.04);
    color: var(--text-light);
    transition: all 0.3s ease;
}

.tag-pill:hover {
    background: rgba(220,111,55,0.1);
    color: var(--primary-color);
}

/* Featured Image */
.detail-featured-img {
    margin-bottom: 48px;
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}

.detail-featured-img img {
    width: 100%;
    display: block;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.detail-featured-img:hover img {
    transform: scale(1.03);
}

/* Article Body Typography */
.article-body {
    font-size: 1.08rem;
    line-height: 2;
    color: var(--text-dark);
}

.article-body p {
    margin-bottom: 28px;
    color: var(--text-dark);
    line-height: 2;
}

.article-body h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--secondary-color);
    margin: 48px 0 20px;
    letter-spacing: -0.5px;
    position: relative;
    padding-left: 20px;
}

.article-body h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 36px 0 14px;
    letter-spacing: -0.3px;
}

/* Article Blockquote */
.article-blockquote {
    margin: 40px 0;
    padding: 36px 40px;
    background: linear-gradient(135deg, rgba(220,111,55,0.04), rgba(220,111,55,0.01));
    border-left: 3px solid var(--primary-color);
    border-radius: 0 4px 4px 0;
    font-style: italic;
    color: var(--text-dark);
    line-height: 1.9;
    font-size: 1.05rem;
}

.article-blockquote strong {
    color: var(--primary-color);
    font-style: normal;
    display: block;
    margin-top: 16px;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

/* Share Bar */
.share-bar {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(0,0,0,0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.share-bar-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 12px;
}

.share-icons {
    display: flex;
    gap: 8px;
}

.share-icon-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0,0,0,0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.share-icon-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* --- 3. Product Detail Specific --- */

/* Product Hero Split */
.product-hero-split {
    display: grid;
    grid-template-columns: minmax(0, 520px) minmax(0, 1fr);
    gap: 60px;
    align-items: start;
    margin-bottom: 80px;
}

.product-hero-image {
    position: sticky;
    top: 0;
    min-width: 0;
    max-width: 520px;
}

/* ===== Gallery Tabs ===== */
.gallery-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

.gallery-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    background: #f0f0f3;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    color: #666;
    transition: all 0.25s ease;
    font-family: inherit;
}

.gallery-tab:hover {
    background: #e0e0e5;
    color: #333;
}

.gallery-tab.active {
    background: var(--primary-color);
    color: #fff;
}

.gallery-tab svg {
    flex-shrink: 0;
}

/* ===== Gallery Panels ===== */
.gallery-panel {
    display: none;
}

.gallery-panel.active {
    display: block;
}

/* ===== Main Image ===== */
.gallery-main-wrap {
    position: relative;
    border-radius: 2px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    background: #f8f8fa;
    aspect-ratio: 1 / 1;
    width: 100%;
    max-width: 100%;
    /* 兜底：即使原图极大，也不让容器无限撑高、破坏详情布局 */
    max-height: 65vh;
    overflow: hidden;
}

/* 关键修复：用绝对定位 inset:0 填充正方形盒子，避免依赖 height:100%
   在 aspect-ratio 推导高度下解析失败而回退到图片原始像素尺寸的问题 */
.gallery-main-wrap > img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    margin: auto;
    -webkit-user-select: none;
    user-select: none;
    -webkit-user-drag: none;
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* Magnifier Lens (tracking box that follows cursor on the main image) */
.magnifier-lens {
    display: none;
    position: absolute;
    width: 160px;
    height: 160px;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    pointer-events: none;
    box-shadow: 0 0 0 6px rgba(220,111,55,0.1), inset 0 0 0 1px rgba(0,0,0,0.06);
    z-index: 10;
    background: rgba(220,111,55,0.04);
}

/* Magnifier Result (floating zoomed detail panel, positioned by JS with fixed) */
.magnifier-result {
    display: none;
    position: fixed;
    width: 360px;
    height: 360px;
    border: 2px solid var(--primary-color);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0,0,0,0.25), 0 4px 12px rgba(0,0,0,0.1);
    z-index: 9999;
    background: #fff;
    pointer-events: none;
}

.magnifier-result img {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
}

/* ===== Thumbnails Slider (single row, slide on arrow click) ===== */
.gallery-thumbs-slider {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 14px;
}

.gallery-thumbs-viewport {
    flex: 1 1 auto;
    overflow: hidden;
    min-width: 0;
}

.gallery-thumbnails {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    transition: transform 0.35s ease;
    will-change: transform;
}

.gallery-thumb {
    width: 80px;
    height: 80px;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.25s ease;
    flex-shrink: 0;
    background: #f0f0f3;
}

.gallery-thumbs-arrow {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: #fff;
    color: #444;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: background 0.2s ease, transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
    opacity: 0.85;
    z-index: 2;
}

.gallery-thumbs-arrow:hover {
    background: #f8f8fa;
    opacity: 1;
    transform: scale(1.08);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.gallery-thumbs-arrow:disabled,
.gallery-thumbs-arrow[disabled] {
    opacity: 0.35;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.gallery-thumb:hover {
    border-color: #ccc;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.gallery-thumb.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(220,111,55,0.2);
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* ===== Main Image Nav Buttons (prev/next) ===== */
.gallery-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.92);
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: background 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
    z-index: 5;
    opacity: 0.85;
}

.gallery-nav-btn:hover {
    background: #fff;
    opacity: 1;
    transform: translateY(-50%) scale(1.08);
}

.gallery-nav-prev { left: 14px; }
.gallery-nav-next { right: 14px; }

/* ===== Gallery Lightbox (full-screen carousel) ===== */
.gallery-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.gallery-lightbox.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.gallery-lightbox-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 56px 20px 20px;
}

.gallery-lightbox-img-wrap {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 0;
    margin-bottom: 12px;
}

.gallery-lightbox-img-wrap img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    will-change: transform, opacity;
    backface-visibility: hidden;
}

.gallery-lightbox-close {
    position: absolute;
    top: 18px;
    right: 22px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
    z-index: 2;
}

.gallery-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.28);
    transform: rotate(90deg);
}

.gallery-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease;
    z-index: 2;
}

.gallery-lightbox-nav:hover { background: rgba(255, 255, 255, 0.28); }
.gallery-lightbox-prev { left: 22px; }
.gallery-lightbox-next { right: 22px; }

.gallery-lightbox-counter {
    position: absolute;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 14px;
    font-family: monospace;
    background: rgba(255, 255, 255, 0.14);
    padding: 4px 14px;
    border-radius: 20px;
    z-index: 2;
}

.gallery-lightbox-thumbs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    padding: 6px 10px 4px;
    max-width: 100%;
    overflow-x: auto;
    flex-shrink: 0;
}

.gallery-lightbox-thumb {
    width: 58px;
    height: 58px;
    border-radius: 5px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.25);
    flex-shrink: 0;
    opacity: 0.55;
    transition: opacity 0.2s ease, border-color 0.2s ease;
}

.gallery-lightbox-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.gallery-lightbox-thumb:hover { opacity: 0.85; }

.gallery-lightbox-thumb.active {
    border-color: var(--primary-color);
    opacity: 1;
}

/* ===== Video Player ===== */
.video-wrapper {
    position: relative;
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    background: #000;
    aspect-ratio: 16 / 9;
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    background: #000;
}

.video-play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: rgba(0,0,0,0.4);
    cursor: pointer;
    transition: opacity 0.3s ease;
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
}

.video-play-overlay svg {
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.4));
    transition: transform 0.3s ease;
}

.video-play-overlay:hover svg {
    transform: scale(1.15);
}

.product-hero-info {
    padding-top: 0;
    min-width: 0;
    word-break: break-word;
}

.product-category-badge {
    display: inline-block;
    padding: 5px 16px;
    background: rgba(220,111,55,0.1);
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-radius: 2px;
    margin-bottom: 20px;
}

.product-hero-title {
    font-size: 2rem;
    font-weight: 900;
    color: #0b0f19;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 16px;
    padding-left: 20px;
    position: relative;
    word-break: break-word;
}

.product-hero-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.product-hero-desc {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 28px;
}

/* Feature Checklist */
.feature-checklist {
    list-style: none;
    margin-bottom: 28px;
}

.feature-checklist li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    font-size: 0.93rem;
    color: var(--text-dark);
    line-height: 1.6;
}

.feature-checklist li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 16px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.product-hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Specs Table */
.specs-section-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--secondary-color);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 36px;
}

.specs-table tr {
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: background 0.3s ease;
}

.specs-table tr:hover {
    background: rgba(0,0,0,0.01);
}

.specs-table td {
    padding: 12px 0;
    font-size: 0.9rem;
}

.specs-table td:first-child {
    color: var(--text-light);
    font-weight: 500;
    width: 140px;
    letter-spacing: 0.5px;
}

.specs-table td:last-child {
    color: var(--secondary-color);
    font-weight: 600;
}

/* ── Operation Log Table (operation-log.html) ── */
.table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.04);
}

.cms-table, .log-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
    min-width: 720px;
}

.cms-table thead th, .log-table thead th {
    text-align: left;
    padding: 14px 18px;
    background: linear-gradient(135deg, #2b3a67, #3a4d8f);
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.cms-table thead th:first-child, .log-table thead th:first-child {
    border-top-left-radius: 12px;
}

.cms-table thead th:last-child, .log-table thead th:last-child {
    border-top-right-radius: 12px;
}

.cms-table tbody tr, .log-table tbody tr {
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: background 0.25s ease;
}

.cms-table tbody tr:hover, .log-table tbody tr:hover {
    background: rgba(124,92,255,0.05);
}

.cms-table tbody tr:last-child, .log-table tbody tr:last-child {
    border-bottom: none;
}

.cms-table td, .log-table td {
    padding: 13px 18px;
    color: var(--text-light, #555);
    vertical-align: top;
}

.cms-table td.col-time, .log-table td.col-time {
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
    color: var(--text-muted, #8a94a6);
    font-size: 0.86rem;
}

.cms-table td.col-action, .log-table td.col-action {
    font-weight: 600;
    color: var(--secondary-color, #2b3a67);
}

.cms-table td.col-detail, .log-table td.col-detail {
    color: var(--text-muted, #8a94a6);
    word-break: break-all;
}

.empty-state {
    padding: 56px 16px;
    text-align: center;
    color: var(--text-muted, #8a94a6);
    font-size: 0.95rem;
    background: #fff;
    border: 1px dashed rgba(0,0,0,0.12);
    border-radius: 12px;
}

/* Product Detail Content Section */
.detail-content-section {
    padding: 60px 0 80px;
    background: #fafafa;
    position: relative;
}

.detail-content-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.05), transparent);
}

.detail-content-grid {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.detail-content-block h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.detail-content-block p {
    font-size: 1.02rem;
    line-height: 2;
    color: var(--text-light);
}

/* ── Rich Content (overview 富文本) ── */
.rich-content {
    line-height: 1.9;
    color: var(--text-light);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.rich-content p {
    margin-bottom: 16px;
}

.rich-content h1,
.rich-content h2,
.rich-content h3,
.rich-content h4 {
    color: var(--secondary-color);
    margin: 24px 0 12px;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.rich-content h1 { font-size: 1.6rem; }
.rich-content h2 { font-size: 1.4rem; }
.rich-content h3 { font-size: 1.2rem; }
.rich-content h4 { font-size: 1.05rem; }

.rich-content ul,
.rich-content ol {
    padding-left: 24px;
    margin: 12px 0 18px;
}

.rich-content li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.rich-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.rich-content a {
    color: var(--primary-color);
    text-decoration: underline;
}

.rich-content blockquote {
    margin: 18px 0;
    padding: 14px 20px;
    background: rgba(220, 111, 55, 0.06);
    border-left: 3px solid var(--primary-color);
    border-radius: 0 6px 6px 0;
    color: var(--secondary-color);
}

/* 富文本表格样式 */
.rich-content table {
    width: 100%;
    min-width: 100%;
    table-layout: auto;
    border-collapse: separate;
    border-spacing: 0;
    margin: 20px 0 28px;
    font-size: 0.95rem;
    line-height: 1.7;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    border: 1px solid #e5e5e5;
}

.rich-content thead th {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: #fff;
    font-weight: 700;
    text-align: left;
    padding: 16px 20px;
    letter-spacing: 0.4px;
    white-space: nowrap;
    vertical-align: middle;
    border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.rich-content thead th:last-child {
    border-right: none;
}

.rich-content tbody td {
    padding: 14px 20px;
    color: var(--text-dark);
    border-bottom: 1px solid #eef0f2;
    border-right: 1px solid #e4e7ea;
    vertical-align: top;
}

.rich-content tbody td:last-child {
    border-right: none;
}

.rich-content tbody tr:last-child td {
    border-bottom: none;
}

.rich-content tbody tr:nth-child(even) {
    background: #fafafa;
}

.rich-content tbody tr {
    transition: background 0.25s ease, box-shadow 0.25s ease;
    height: 56px !important;
}

.rich-content tbody tr:hover {
    background: rgba(220, 111, 55, 0.06);
    box-shadow: inset 4px 0 0 var(--primary-color);
}

.rich-content tbody tr:hover td {
    color: var(--secondary-color);
}

.rich-content td[style*="text-align:center"],
.rich-content td[style*="text-align: center"] {
    text-align: center;
}

.rich-content th[style*="text-align:center"],
.rich-content th[style*="text-align: center"] {
    text-align: center;
}

/* Application Cards Grid */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 4px;
}

.app-card {
    padding: 24px 20px;
    background: #fff;
    border: 1px solid rgba(0,0,0,0.04);
    border-radius: 2px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.app-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.08);
    border-color: transparent;
}

.app-card:hover::before {
    transform: scaleX(1);
}

.app-card-icon {
    margin-bottom: 16px;
    color: var(--primary-color);
    opacity: 0.8;
}

.app-card-icon .app-icon-svg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.app-card-icon .app-icon-svg svg {
    display: block;
}

.app-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 8px;
    letter-spacing: -0.3px;
}

.app-card p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

/* Tips / Notice Box */
.tips-box {
    padding: 28px 32px;
    background: #fff;
    border-left: 3px solid var(--primary-color);
    border-radius: 0 4px 4px 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.tips-box-title {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tips-box ul {
    list-style: none;
    padding: 0;
}

.tips-box ul li {
    padding: 6px 0;
    font-size: 0.92rem;
    color: var(--text-dark);
    line-height: 1.7;
    padding-left: 20px;
    position: relative;
}

.tips-box ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

.tips-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
    font-size: 0.92rem;
    color: var(--text-dark);
    line-height: 1.7;
}

.tips-item .tips-icon {
    flex: 0 0 auto;
    width: 22px;
    height: 22px;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.tips-item .tips-icon svg {
    width: 22px;
    height: 22px;
}


/* Related Section */
.related-section {
    padding: 80px 0;
    background: #fff;
    position: relative;
}

.related-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.06), transparent);
}

/* ── Related Products Carousel ── */
.related-carousel {
    position: relative;
    padding: 0 50px;
}

.rel-carousel-viewport {
    overflow: hidden;
    border-radius: 2px;
}

.rel-carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    will-change: transform;
}

.rel-carousel-track .product-card {
    flex: 0 0 33.333%;
    max-width: 33.333%;
    padding: 0 12px;
    box-sizing: border-box;
    margin-bottom: 0;
    height: auto;
}

.rel-carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.1);
    background: #fff;
    color: #1a1a2e;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.rel-carousel-btn:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(220,111,55,0.25);
}

.rel-carousel-btn:disabled {
    opacity: 0.25;
    cursor: default;
    pointer-events: none;
}

.rel-carousel-prev { left: 0; }
.rel-carousel-next { right: 0; }

.rel-carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 28px;
}

.rel-carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #d4d4d8;
    cursor: pointer;
    transition: all 0.3s ease;
}

.rel-carousel-dot.active {
    background: var(--primary-color);
    width: 28px;
    border-radius: 5px;
}

.rel-carousel-dot:hover {
    background: var(--primary-color);
    opacity: 0.65;
}

@media (max-width: 1024px) {
    .related-carousel {
        padding: 0 42px;
    }
    .rel-carousel-track .product-card {
        flex: 0 0 50%;
        max-width: 50%;
    }
    .rel-carousel-btn {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 640px) {
    .related-carousel {
        padding: 0 32px;
    }
    .rel-carousel-track .product-card {
        flex: 0 0 100%;
        max-width: 100%;
    }
    .rel-carousel-btn {
        width: 32px;
        height: 32px;
    }
    .rel-carousel-dots { margin-top: 20px; gap: 8px; }
    .rel-carousel-dot { width: 8px; height: 8px; }
    .rel-carousel-dot.active { width: 22px; }
}

/* --- 4. About Page V4 --- */

/* Story Section */
.about-story-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}

.about-story-image {
    position: relative;
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.about-story-image img {
    width: 100%;
    height: 480px;
    object-fit: cover;
    display: block;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.about-story-content h2 {
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--secondary-color);
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.about-story-content .divider {
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    margin-bottom: 28px;
}

.about-story-content p {
    font-size: 1.02rem;
    line-height: 2;
    color: var(--text-light);
    margin-bottom: 16px;
}

/* Mission & Vision dual panel */
.mission-vision-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.mv-card {
    padding: 48px 40px;
    background: #fff;
    border-radius: 2px;
    position: relative;
    transition: all 0.4s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.mv-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 50px rgba(0,0,0,0.1);
}

.mv-card-icon {
    margin-bottom: 24px;
    color: var(--primary-color);
    opacity: 0.85;
}

.mv-card h3 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 18px;
    letter-spacing: -0.5px;
}

.mv-card p {
    font-size: 0.98rem;
    line-height: 1.9;
    color: var(--text-light);
    margin-bottom: 10px;
}

/* Advantages Grid */
.advantages-section {
    padding: 100px 0;
    background: #fff;
    position: relative;
}

.adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.adv-card {
    padding: 36px 28px;
    background: #fafafa;
    border-radius: 2px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.adv-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.adv-card:hover {
    background: #fff;
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
    transform: translateY(-6px);
}

.adv-card:hover::after {
    transform: scaleX(1);
}

.adv-card-icon {
    margin-bottom: 20px;
    color: var(--primary-color);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.adv-card:hover .adv-card-icon {
    opacity: 1;
}

.adv-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.adv-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
    margin: 0;
}

/* Stats Banner */
.stats-banner {
    background: linear-gradient(135deg, #1a1a1a 0%, #0d1f2d 100%);
    padding: 70px 0;
    position: relative;
    overflow: hidden;
}

.stats-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(ellipse at 30% 50%, rgba(220,111,55,0.1) 0%, transparent 60%);
    pointer-events: none;
}

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

.stats-row-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    text-align: center;
    padding: 40px 24px 34px;
    position: relative;
}

.stats-row-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: rgba(255,255,255,0.08);
}

.stat-big {
    font-size: 3.4rem;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1;
    letter-spacing: -2px;
    display: block;
    margin-bottom: 14px;
}

.stat-big-label {
    display: block;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    font-weight: 400;
    letter-spacing: 1.5px;
    line-height: 1.5;
    max-width: 160px;
}

/* Certifications Grid */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.cert-card {
    padding: 36px 24px;
    text-align: center;
    background: #fafafa;
    border-radius: 2px;
    transition: all 0.4s ease;
    border: 1px solid transparent;
}

.cert-card:hover {
    background: #fff;
    border-color: rgba(220,111,55,0.15);
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
    transform: translateY(-4px);
}

.cert-card-icon {
    margin-bottom: 18px;
    color: var(--primary-color);
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.cert-card:hover .cert-card-icon {
    opacity: 1;
}

.cert-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.cert-card p {
    font-size: 0.8rem;
    color: var(--text-light);
    margin: 0;
    letter-spacing: 0.5px;
}

/* ===== Development Timeline (Optimized) ===== */
.about-timeline-section {
    padding: 100px 0 80px;
    background: #1a1a2e url('../images/banner-about.jpg') center/cover no-repeat fixed;
    position: relative;
    z-index: 1;
}

.about-timeline-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15,15,30,0.88) 0%, rgba(26,26,46,0.92) 50%, rgba(15,15,30,0.9) 100%);
    z-index: 0;
}

.about-timeline-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, transparent, transparent);
    z-index: 0;
    pointer-events: none;
}

.about-timeline-section .container {
    position: relative;
    z-index: 2;
}

.about-timeline-section .eyebrow {
    color: rgba(220,111,55,0.95);
    letter-spacing: 3px;
    font-weight: 700;
}

.about-timeline-section .section-title {
    color: #fff;
    text-shadow: 0 2px 20px rgba(220,111,55,0.2);
}

.timeline {
    position: relative;
    padding: 20px 0 10px;
    margin-top: 70px;
}

/* Central vertical line with gradient + animated fill */
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg,
        var(--primary-color) 0%,
        rgba(220,111,55,0.4) 40%,
        rgba(100,100,140,0.2) 80%,
        transparent 100%
    );
    transform: translateX(-50%);
    border-radius: 2px;
}

/* Animated progress line overlay — controlled by JS scroll observer */
.timeline::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 3px;
    height: var(--timeline-progress, 0%);
    background: linear-gradient(180deg,
        var(--primary-color) 0%,
        var(--primary-light) 60%,
        rgba(255,200,150,0.6) 100%
    );
    transform: translateX(-50%);
    border-radius: 2px;
    box-shadow: 0 0 12px rgba(220,111,55,0.5), 0 0 24px rgba(220,111,55,0.25);
    /* No transition — follows finger instantly */
    z-index: 1;
}

.timeline-item {
    position: relative;
    display: flex;
    align-items: flex-start;
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    /* Staggered delay set by JS inline style --stagger-delay */
    transition-delay: var(--stagger-delay, 0s);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Desktop: alternating layout */
.timeline-item:nth-child(odd) {
    flex-direction: row;
    padding-right: calc(50% + 50px);
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    padding-left: calc(50% + 50px);
}

/* The dot — enhanced with ring and glow */
.timeline-dot {
    position: absolute;
    left: 50%;
    top: 14px;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 3;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 0 0 4px rgba(220,111,55,0.2), 0 0 16px rgba(220,111,55,0.35);
}

.timeline-dot::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(220,111,55,0.4);
    animation: timelineDotPulse 2.5s ease-in-out infinite;
}

@keyframes timelineDotPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.6); opacity: 0; }
}

.timeline-item:hover .timeline-dot {
    transform: translateX(-50%) scale(1.25);
    box-shadow: 0 0 0 6px rgba(220,111,55,0.3), 0 0 28px rgba(220,111,55,0.55);
}

/* Year badge — large, positioned outside the card */
.timeline-year-badge {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    color: rgba(220,111,55,0.85);
    letter-spacing: -1px;
    margin-bottom: 10px;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    text-shadow: 0 2px 12px rgba(220,111,55,0.3);
}

/* Card — glass-morphism on dark bg */
.timeline-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
    border-radius: 16px;
    padding: 26px 30px;
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
}

.timeline-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.timeline-card:hover {
    background: linear-gradient(135deg, rgba(255,255,255,0.13) 0%, rgba(255,255,255,0.06) 100%);
    border-color: rgba(220,111,55,0.35);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 30px rgba(220,111,55,0.1);
    transform: translateY(-5px);
}

.timeline-card:hover::before {
    opacity: 1;
}

.timeline-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
    letter-spacing: -0.3px;
    line-height: 1.35;
}

.timeline-card p {
    font-size: 0.91rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.75;
    margin: 0;
}

/* ===== Company Gallery (Carousel) ===== */
.company-gallery-section {
    padding: 100px 0 80px;
    background: #fff;
}

/* Carousel wrapper: positions prev/next buttons and dots around the track */
.carousel-wrapper {
    position: relative;
    margin-top: 60px;
}

.carousel-track-container {
    overflow: hidden;
    border-radius: 12px;
}

.company-gallery-grid {
    display: flex;
    gap: 20px;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
    /* Each slide item has a fixed width; we set it via JS but also provide CSS defaults */
}

.carousel-slide-item {
    flex: 0 0 calc(33.333% - 14px); /* 3 per view on desktop, gap=20px => 20*2/3=14 approx */
    min-width: 0;
}

.gallery-image-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-image-card:hover {
    transform: translateY(-5px) !important;
    box-shadow: 0 16px 40px rgba(0,0,0,0.12);
}

.gallery-image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-image-card:hover img {
    transform: scale(1.08);
}

.gallery-image-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.gallery-image-card:hover::after {
    opacity: 1;
}

.gallery-image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px 24px;
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    z-index: 2;
    transform: translateY(10px);
    opacity: 0;
    transition: all 0.35s ease;
}

.gallery-image-card:hover .gallery-image-caption {
    transform: translateY(0);
    opacity: 1;
}

/* Carousel nav buttons */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.9);
    border: 1px solid #e2e8f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--secondary-color);
    transition: all 0.3s ease;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.carousel-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 16px rgba(220,111,55,0.3);
}

.carousel-prev { left: -22px; }
.carousel-next { right: -22px; }

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid #cbd5e1;
    background: transparent;
    cursor: pointer;
    padding: 0;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: scale(1.2);
}

/* ===== Certificate Image Gallery (Carousel) ===== */
.cert-gallery-section {
    padding: 80px 0 100px;
    background: #fafafa;
}

.cert-carousel-wrapper {
    position: relative;
    margin-top: 60px;
}

.cert-gallery-grid {
    display: flex;
    gap: 24px;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.cert-carousel-item {
    flex: 0 0 calc(25% - 18px); /* 4 per view, gap=24 => 24*3/4=18 */
    min-width: 0;
}

.cert-image-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border: 1px solid #eef1f5;
    transition: all 0.35s ease;
    text-align: center;
}

.cert-image-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.1);
    border-color: rgba(220,111,55,0.2);
}

.cert-image-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: #f5f6f8;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 16px;
    transition: transform 0.5s ease;
}

.cert-image-card:hover .cert-image-wrap img {
    transform: scale(1.05);
}

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

.cert-image-card-info h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 4px;
    letter-spacing: -0.2px;
}

.cert-image-card-info span {
    font-size: 0.78rem;
    color: var(--text-light);
}

/* --- 5. News List V4 --- */

/* Featured News */
.featured-news-section {
    padding: 80px 0 40px;
    background: #fafafa;
}

.featured-news-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.featured-news-image {
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.featured-news-image img {
    width: 100%;
    height: 360px;
    object-fit: cover;
    display: block;
    transition: transform 0.8s ease;
}

.featured-news-image:hover img {
    transform: scale(1.05);
}

.featured-news-content .eyebrow {
    margin-bottom: 14px;
}

.featured-news-title {
    font-size: 2rem;
    font-weight: 900;
    color: #0b0f19;
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 16px;
    padding-left: 20px;
    position: relative;
}

.featured-news-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.featured-news-excerpt {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 24px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 50px;
}

.page-btn {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    border: 1px solid transparent;
    border-radius: 2px;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.page-btn:hover {
    border-color: rgba(0,0,0,0.1);
    background: rgba(0,0,0,0.02);
}

.page-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.page-btn.prev,
.page-btn.next {
    width: auto;
    padding: 0 16px;
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.page-ellipsis {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: #94a3b8;
    -webkit-user-select: none;
    user-select: none;
}

/* Newsletter Box */
.newsletter-box {
    padding: 50px 0;
    background: #fafafa;
    text-align: center;
}

.newsletter-box h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary-color);
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.newsletter-box p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 28px;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 14px 18px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 2px;
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.newsletter-form button {
    padding: 14px 28px;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 2px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.newsletter-form button:hover {
    background: var(--primary-color);
}

/* --- 6. Contact Page V4 --- */

/* Contact Page utility */
.section-pt-0 {
    padding-top: 0;
}

.form-section-title {
    color: #0b0f19;
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -1.5px;
    margin-bottom: 10px;
}

.form-section-header {
    margin-bottom: 32px;
}

/* Contact Info Cards */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.contact-info-card {
    padding: 36px 28px;
    background: #fafafa;
    border-radius: 2px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid transparent;
}

.contact-info-card:hover {
    background: #fff;
    border-color: rgba(220,111,55,0.1);
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
    transform: translateY(-4px);
}

.contact-card-icon {
    margin-bottom: 16px;
    color: var(--primary-color);
    display: flex;
    justify-content: center;
}

.contact-card-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 8px;
}

.contact-card-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--secondary-color);
    line-height: 1.6;
}

/* Contact Form & Map Grid */
.contact-main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.v3-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.v3-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.v3-form input,
.v3-form textarea,
.v3-form select {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 2px;
    font-size: 0.9rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: #fff;
    color: var(--text-dark);
}

.v3-form input:focus,
.v3-form textarea:focus,
.v3-form select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(220,111,55,0.06);
}

.v3-form textarea {
    min-height: 130px;
    resize: vertical;
}

.v3-form button {
    align-self: flex-start;
    padding: 15px 36px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 2px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.4s ease;
    font-family: inherit;
}

.v3-form button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(220,111,55,0.3);
}

/* Map placeholder */
.map-placeholder {
    width: 100%;
    height: 380px;
    background: #f0f0f0;
    border-radius: 2px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

/* Map container (高德地图 JS API) */
.amap-map {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
    background: #f0f0f0;
}

.map-placeholder-inner {
    text-align: center;
    color: var(--text-light);
}

.map-placeholder-inner svg {
    opacity: 0.3;
    margin-bottom: 12px;
}

.map-placeholder-inner p {
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* FAQ List */
.faq-section {
    padding: 100px 0 80px;
    background: #fafafa;
    position: relative;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 100%;
    margin: 0 auto;
}

.faq-item {
    padding: 28px 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.faq-item {
    border-top: 1px solid rgba(0,0,0,0.06);
}

.faq-item h4 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0;
    letter-spacing: -0.3px;
    cursor: pointer;
    transition: color 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.faq-item:hover h4 {
    color: var(--primary-color);
}

.faq-item h4::before {
    content: '+';
    display: block;
    flex-shrink: 0;
    width: 1em;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--primary-color);
    transition: transform 0.3s ease;
    line-height: 1.4;
}

.faq-item.open h4::before {
    content: '−';
    transform: rotate(0deg);
}

.faq-item p {
    font-size: 0.92rem;
    line-height: 1.8;
    color: var(--text-light);
    margin: 0;
    max-height: 0;
    overflow: hidden;
    padding-left: calc(1.1em + 10px);
    transition: max-height 0.35s ease, margin-top 0.35s ease;
}

.faq-item.open p {
    max-height: 500px;
    margin-top: 8px;
}

/* FAQ Pagination */
.faq-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
}

.faq-pagination .page-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

/* --- 7. Products Layout (Sidebar + Main) --- */
.products-layout {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

/* Sidebar */
.products-sidebar {
    width: 240px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    background: #fff;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 14px;
    padding: 24px 0;
}

.sidebar-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #0b0f19;
    padding: 0 24px 16px;
    margin: 0 0 4px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    letter-spacing: 0.3px;
}

.sidebar-cat-list {
    list-style: none;
    padding: 4px 0;
    margin: 0;
}

/* === Two-level category tree (sidebar) === */
.sidebar-cat-group {
    list-style: none;
    padding: 0;
    margin: 6px 12px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 10px;
    border: 1px solid rgba(0,0,0,0.04);
    overflow: hidden;
}

.sidebar-cat-group-title {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #0b0f19;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
    background: linear-gradient(90deg, rgba(220, 111, 55, 0.10) 0%, rgba(220, 111, 55, 0.04) 100%);
    border-left: 3px solid var(--primary-color);
}

.sidebar-cat-group-title:hover {
    background: linear-gradient(90deg, rgba(220, 111, 55, 0.18) 0%, rgba(220, 111, 55, 0.06) 100%);
}

.sidebar-cat-group-arrow {
    display: inline-block;
    width: 16px;
    font-size: 12px;
    color: var(--primary-color);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.sidebar-cat-group-label {
    flex: 1;
    letter-spacing: 0.2px;
}

.sidebar-cat-group-count {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--primary-color);
    background: rgba(220, 111, 55, 0.12);
    border-radius: 999px;
}

.sidebar-cat-group:first-of-type {
    margin-top: 14px;
}

.sidebar-cat-sublist {
    list-style: none;
    padding: 0;
    margin: 0;
    background: rgba(255,255,255,0.6);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height .38s cubic-bezier(.4,0,.2,1), opacity .3s ease, padding .38s ease;
}
.sidebar-cat-sublist.open {
    max-height: max-content;
    opacity: 1;
    padding: 6px 0 8px;
}

.sidebar-cat-sublist .sidebar-cat-item {
    padding: 9px 14px 9px 38px;
    font-size: 0.86rem;
    color: #475569;
    position: relative;
}

.sidebar-cat-sublist .sidebar-cat-item::before {
    content: '';
    position: absolute;
    left: 22px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--sidebar-cat-dot-color, #cbd5e1);
}

.sidebar-cat-sublist .sidebar-cat-item:hover {
    padding-left: 42px;
    color: var(--primary-color);
    background: rgba(220, 111, 55, 0.06);
}

.sidebar-cat-sublist .sidebar-cat-item:hover::before {
    transform: translateY(-50%) scale(1.4);
}

.sidebar-cat-sublist .sidebar-cat-item .sidebar-cat-dot {
    display: none;
}

.sidebar-cat-all {
    padding: 13px 24px;
    font-weight: 650;
}

.sidebar-cat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 24px;
    cursor: pointer;
    font-size: 0.86rem;
    font-weight: 500;
    color: #475569;
    transition: all 0.22s ease;
    position: relative;
    -webkit-user-select: none;
    user-select: none;
}

.sidebar-cat-item:hover {
    background: rgba(220, 111, 55, 0.04);
    color: var(--primary-color);
    padding-left: 28px;
}

.sidebar-cat-item.active {
    background: rgba(220, 111, 55, 0.08);
    color: var(--primary-color);
    font-weight: 650;
}

.sidebar-cat-item.active::before {
    content: '';
    position: absolute;
    background: var(--primary-color);
}

/* 定位高亮：从导航跳转后，对应一级分组标题高亮 */
.sidebar-cat-group.active > .sidebar-cat-group-title {
    background: linear-gradient(90deg, rgba(220, 111, 55, 0.22) 0%, rgba(220, 111, 55, 0.08) 100%);
    border-left: 3px solid var(--primary-color);
    color: var(--primary-color);
    font-weight: 700;
}

.sidebar-cat-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    transition: transform 0.2s ease;
    display: none;
}

.sidebar-cat-item:hover .sidebar-cat-dot {
    transform: scale(1.3);
}

/* Main content area */
.products-main {
    flex: 1;
    min-width: 0;
}

/* Hide sidebar on mobile, show dropdown instead */
.products-sidebar {
    display: none;
}

.product-filters-mobile {
    display: none;
}

@media (min-width: 769px) {
    .products-sidebar {
        display: block;
    }
    .product-filters-mobile {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .products-layout {
        flex-direction: column;
        gap: 0;
    }
    .products-sidebar {
        display: none;
    }
    .product-filters-mobile {
        display: block;
        margin-bottom: 18px;
    }
    .products-main {
        width: 100%;
    }
}

/* --- 8. Sub-page Responsive --- */
@media (max-width: 1024px) {
    .product-hero-split {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-hero-image {
        position: static;
        max-width: 480px;
        width: 100%;
    }

    .gallery-thumbnails {
        gap: 8px;
    }

    .gallery-thumb {
        width: 64px;
        height: 64px;
    }

    .about-story-split {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-story-image img {
        height: 360px;
    }

    .mission-vision-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .adv-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px 24px;
    }

    .stats-row-item {
        justify-content: flex-start;
        padding: 34px 16px 28px;
    }

    .stats-row-item::after {
        top: 10%;
        height: 80%;
    }

    /* In 2x2: hide dividers on right-edge items (2nd and 4th) */
    .stats-row-item:nth-child(even)::after {
        display: none;
    }

    .stat-big {
        font-size: 2.4rem;
        margin-bottom: 10px;
    }

    .stat-big-label {
        font-size: 0.76rem;
        letter-spacing: 1px;
        line-height: 1.4;
        max-width: 160px;
    }

    /* Inline-padded sections: normalize on tablet */
    .section[style*="padding"] {
        padding: 50px 0 !important;
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Timeline — tablet */
    .timeline::before,
    .timeline::after {
        left: 24px;
    }

    .timeline-item,
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        flex-direction: row;
        padding-left: 64px;
        padding-right: 0;
    }

    .timeline-dot {
        left: 24px;
    }

    .timeline-year-badge {
        font-size: 1.5rem;
    }

    .carousel-slide-item {
        flex: 0 0 calc(50% - 10px); /* 2 per view on tablet */
    }

    .cert-carousel-item {
        flex: 0 0 calc(50% - 12px); /* 2 per view on tablet */
    }

    .carousel-btn { display: none; } /* hide arrows on tablet, use swipe/dots */

    .contact-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-main-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .featured-news-split {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .featured-news-image img {
        height: 280px;
    }
}

@media (max-width: 768px) {
    .page-banner {
        height: 200px;
        margin-top: 70px;
    }

    .page-banner-title {
        font-size: 1.8rem;
    }

    .detail-title {
        font-size: 1.8rem;
    }

    .product-hero-title {
        font-size: 1.7rem;
    }

    .product-hero-split {
        margin-bottom: 30px;
    }
.related-section {
    padding: 50px 0;
}
.faq-section {
    padding: 50px 0 80px;
}

    .article-body {
        font-size: 1rem;
    }

    .article-body h2 {
        font-size: 1.3rem;
        padding-left: 14px;
    }

    .article-blockquote {
        padding: 24px 20px;
    }

    .share-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .app-grid {
        grid-template-columns: 1fr;
    }

    .specs-table td:first-child {
        width: 120px;
    }

    .rich-content table {
        font-size: 0.85rem;
    }

    .rich-content thead th,
    .rich-content tbody td {
        padding: 10px 12px;
    }

    /* --- About page spacing reductions --- */
    .about-story-split {
        gap: 28px;
    }

    .about-story-content h2 {
        font-size: 1.6rem;
    }

    .about-story-image img {
        height: 240px;
    }

    .mission-vision-grid {
        gap: 22px;
    }

    .mv-card {
        padding: 24px 20px;
    }

    .mv-card h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }

    .mv-card p {
        font-size: 0.88rem;
        margin-bottom: 8px;
    }

    .mv-card-icon {
        margin-bottom: 16px;
    }

    /* Timeline — mobile */
    .about-timeline-section {
        padding: 60px 0 50px;
    }

    .timeline::before,
    .timeline::after {
        left: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        flex-direction: row;
        padding-left: 56px;
        padding-right: 0;
    }

    .timeline-dot {
        left: 20px;
    }

    .timeline-year-badge {
        font-size: 1.4rem;
    }

    .timeline-card {
        padding: 20px 20px;
    }

    .timeline-card h4 {
        font-size: 0.98rem;
    }

    .timeline-card p {
        font-size: 0.85rem;
    }


    .company-gallery-section {
        padding: 60px 0 50px;
    }

    .company-gallery-grid {
        gap: 14px;
    }

    .carousel-slide-item {
        flex: 0 0 calc(50% - 7px); /* 2 per view */
    }

    .cert-carousel-item {
        flex: 0 0 calc(50% - 8px);
    }

    .cert-gallery-section {
        padding: 0 0 60px;
    }

    .cert-gallery-grid {
        gap: 16px;
    }

    /* Inline-padded sections: override on mobile */
    .section[style*="padding"] {
        padding: 40px 0 !important;
    }

    .advantages-section {
        padding: 40px 0;
    }

    .adv-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .adv-card {
        padding: 24px 20px;
    }

    .adv-card h4 {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }

    .adv-card p {
        font-size: 0.82rem;
    }

    .adv-card-icon {
        margin-bottom: 14px;
    }

    .stat-big {
        font-size: 2rem;
        margin-bottom: 10px;
    }

    .stats-banner {
        padding: 36px 0;
    }

    .stats-row {
        gap: 28px 24px;
    }

    .stats-row-item {
        justify-content: flex-start;
        padding: 28px 14px 24px;
    }

    .stats-row-item::after {
        top: 8%;
        height: 84%;
    }

    /* In 2x2: hide dividers on right-edge items */
    .stats-row-item:nth-child(even)::after {
        display: none;
    }

    .stat-big-label {
        font-size: 0.74rem;
        letter-spacing: 1.2px;
        line-height: 1.4;
    }

    .cert-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .cert-card {
        padding: 24px 16px;
    }

    .cert-card h4 {
        font-size: 0.88rem;
    }

    .cert-card-icon {
        margin-bottom: 12px;
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
    }

    .v3-form-row {
        grid-template-columns: 1fr;
    }

    .map-placeholder {
        height: 280px;
    }

    .featured-news-title {
        font-size: 1.5rem;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form button {
        width: 100%;
    }
    .products-list-section {
        padding: 30px 0 36px;
    }
.hero-premium {
      margin-top: 7vh;
    height: auto;
    min-height: 405px;
 }
}

@media (max-width: 480px) {
    .page-banner {
        height: 160px;
        margin-top: 65px;
    }

    .page-banner-title {
        font-size: 1.4rem;
    }

    .detail-title {
        font-size: 1.5rem;
    }

    .product-hero-title {
        font-size: 1.4rem;
    }

    .product-hero-actions {
        flex-direction: column;
    }

    .product-hero-actions .btn {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .gallery-tab {
        padding: 7px 12px;
        font-size: 0.75rem;
    }

    .gallery-thumb {
        width: 56px;
        height: 56px;
    }

    /* --- About page tighter spacing (480px) --- */
    .about-story-split {
        gap: 22px;
    }

    .about-story-image img {
        height: 200px;
    }

    .about-story-content h2 {
        font-size: 1.35rem;
    }

    .mission-vision-grid {
        gap: 16px;
    }

    .mv-card {
        padding: 20px 16px;
    }

    .mv-card h3 {
        font-size: 1.1rem;
    }

    .mv-card p {
        font-size: 0.84rem;
    }

    .mv-card-icon {
        margin-bottom: 12px;
    }

    .section[style*="padding"] {
        padding: 28px 0 !important;
    }

    .advantages-section {
        padding: 28px 0;
    }

    .adv-grid {
        gap: 12px;
    }

    .adv-card {
        padding: 20px 16px;
    }

    .adv-card h4 {
        font-size: 0.88rem;
    }

    .adv-card p {
        font-size: 0.78rem;
    }

    .adv-card-icon {
        margin-bottom: 10px;
    }

    .stats-row {
        grid-template-columns: 1fr 1fr;
        gap: 18px 16px;
    }

    .stats-row-item {
        padding: 22px 12px;
    }

    .stats-row-item {
        justify-content: flex-start;
        padding: 22px 12px 20px;
    }

    .stats-row-item::after {
        display: none;
    }

    .stat-big {
        font-size: 1.5rem;
        margin-bottom: 7px;
    }

    .stat-big-label {
        font-size: 0.7rem;
        letter-spacing: 1px;
        line-height: 1.35;
    }

    .stats-banner {
        padding: 28px 0;
    }

    .cert-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .cert-card {
        padding: 20px 14px;
    }

    .cert-card h4 {
        font-size: 0.84rem;
    }

    .cert-card p {
        font-size: 0.74rem;
    }

    .cert-card-icon {
        margin-bottom: 10px;
    }

    /* Timeline — small phone */
    .about-timeline-section {
        padding: 40px 0 36px;
    }

    .timeline {
        margin-top: 36px;
    }

    .timeline-item {
        padding-left: 48px !important;
        margin-bottom: 32px;
    }

    .timeline::before,
    .timeline::after {
        left: 16px;
    }

    .timeline-dot {
        left: 16px;
        width: 14px;
        height: 14px;
    }

    .timeline-year-badge {
        font-size: 1.25rem;
    }

    .timeline-card {
        padding: 16px 16px;
    }

    .timeline-card h4 {
        font-size: 0.9rem;
    }

    .timeline-card p {
        font-size: 0.8rem;
        line-height: 1.6;
    }


    .company-gallery-section {
        padding: 40px 0 36px;
    }

    .company-gallery-grid {
        gap: 10px;
        margin-top: 36px;
    }

    .carousel-slide-item {
        flex: 0 0 calc(50% - 5px); /* 2 per view on small mobile */
    }

    .cert-carousel-item {
        flex: 0 0 100%; /* 1 per view on mobile */
    }

    .cert-gallery-section {
        padding: 0 0 40px;
    }

    .cert-gallery-grid {
        gap: 14px;
        margin-top: 36px;
    }

    .cert-image-wrap {
        aspect-ratio: 4/3;
    }

    .faq-item {
        padding: 20px 0;
    }

    .faq-item h4 {
        font-size: 0.95rem;
    }

    .pagination {
        gap: 4px;
    }

    .page-btn {
        width: 36px;
        height: 36px;
        font-size: 0.8rem;
    }

    .product-filter-btn {
        padding: 4px 11px;
        font-size: 0.68rem;
        border-width: 1.5px;
    }
}
div#homeProductsStatus {
    display: none !important;
}

/* =========================================================
   全局动画增强 — 仅补充过渡 / 微交互 / 装饰，不改变任何布局
   （装饰元素均用 absolute，不占据文档流空间）
   ========================================================= */

/* 统一过渡曲线：让颜色 / 背景 / 阴影 / 位移变化更顺滑 */
a, button, .btn, input, select, textarea, .card, img {
    transition: color .25s ease, background-color .25s ease, border-color .25s ease,
                box-shadow .3s ease, transform .3s ease, opacity .3s ease;
}

/* 按钮悬停轻微抬升 */
.btn:hover, button.btn:hover { transform: translateY(-2px); }

/* 文字链接下划线：从左向右展开（absolute，不占布局） */
.nav-link, .footer a, .text-link { position: relative; }
.nav-link::after, .footer a::after, .text-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 100%;
    height: 2px;
    background: var(--primary-color, #dc6f37);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .3s ease;
}
.nav-link:hover::after, .footer a:hover::after, .text-link:hover::after { transform: scaleX(1); }

/* 区块标题装饰线：载入时从左展开（absolute，不占布局高度） */
.section-header h2, .section-title { position: relative; }
.section-header h2::after, .section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 64px;
    height: 3px;
    border-radius: 2px;
    background: linear-gradient(90deg, #dc6f37, #f4a261);
    transform: scaleX(0);
    transform-origin: left;
    animation: headerUnderline 1s ease .2s forwards;
    display: none;
}
.social-link:hover::after {
    display: none;
}
@keyframes headerUnderline { to { transform: scaleX(1); } }

/* 键盘焦点可达性高亮（仅键盘聚焦生效，不影响鼠标交互） */
a:focus-visible, button:focus-visible, .btn:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, .sidebar-cat-item:focus-visible {
    outline: 2px solid rgba(220, 111, 55, .55);
    outline-offset: 2px;
}

/* =========================================================
   Banner 纯净模式：仅展示背景图/视频，移除全部文案与按钮
   （含首页 Hero 与内页 page-banner，保留背景视觉）
   ========================================================= */
.page-banner-title,
.breadcrumb,
.hero-badge,
.hero-title-premium,
.hero-description-premium,
.hero-actions-premium {
    display: none !important;
}
/* 内页 banner 内容容器留白但隐藏文字，避免背景被内容遮挡 */
.page-banner-content { opacity: 0; pointer-events: none; }
/* 首页 Hero 内容层隐藏，仅留背景媒体 */
.hero-premium .slide-content { display: none !important; }