/* ========================================
   汇乾研究院 - 全站样式
   ======================================== */

:root {
    /* 主色 - 深蓝 + 金色 */
    --c-primary: #0a1929;
    --c-primary-2: #1a2942;
    --c-primary-3: #2d4263;
    --c-accent: #c9a86a;
    --c-accent-2: #d4b888;
    --c-accent-3: #a88a52;

    /* 中性色 */
    --c-text: #1a1a1a;
    --c-text-2: #4a4a4a;
    --c-text-3: #8a8a8a;
    --c-bg: #ffffff;
    --c-bg-alt: #f6f7f9;
    --c-border: rgba(10, 25, 41, 0.08);

    /* 字体 */
    --f-zh: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif;
    --f-en: 'Inter', -apple-system, sans-serif;
    --f-display: 'Playfair Display', Georgia, serif;

    /* 间距 */
    --s-1: 0.5rem;
    --s-2: 1rem;
    --s-3: 1.5rem;
    --s-4: 2rem;
    --s-5: 3rem;
    --s-6: 4rem;
    --s-7: 6rem;
    --s-8: 8rem;

    /* 圆角 */
    --r-1: 4px;
    --r-2: 8px;
    --r-3: 12px;
    --r-4: 16px;
    --r-5: 24px;

    /* 阴影 */
    --sh-1: 0 2px 8px rgba(10, 25, 41, 0.04);
    --sh-2: 0 8px 24px rgba(10, 25, 41, 0.08);
    --sh-3: 0 20px 50px rgba(10, 25, 41, 0.12);
    --sh-gold: 0 12px 32px rgba(201, 168, 106, 0.25);

    --header-h: 76px;
    --container: 1280px;

    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--f-zh);
    font-size: 16px;
    line-height: 1.65;
    color: var(--c-text);
    background: var(--c-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* ========================================
   容器
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: var(--s-7) 0;
    position: relative;
}

/* ========================================
   头部导航
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: rgba(10, 25, 41, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s var(--ease);
}

.header.scrolled {
    background: rgba(10, 25, 41, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
    height: 68px;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #fff;
    flex-shrink: 0;
}

.logo-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-zh {
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
    letter-spacing: 0.05em;
}

.logo-en {
    font-family: var(--f-en);
    font-size: 0.6rem;
    font-weight: 500;
    color: var(--c-accent);
    letter-spacing: 0.2em;
}

.nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: 0.25rem;
}

.nav-link {
    position: relative;
    display: inline-block;
    padding: 0.5rem 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--c-accent);
    transition: width 0.3s var(--ease), left 0.3s var(--ease);
}

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

.nav-link:hover::after, .nav-link.active::after {
    width: 24px;
    left: calc(50% - 12px);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-shrink: 0;
}

.header-phone {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--c-accent);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    background: rgba(201, 168, 106, 0.1);
    border: 1px solid rgba(201, 168, 106, 0.2);
    border-radius: 50px;
    transition: all 0.3s;
    white-space: nowrap;
}

.header-phone:hover {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}

.menu-toggle {
    display: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    position: relative;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 1.5px;
    background: #fff;
    margin: 0 auto;
    transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* 移动端菜单 - 修复为顶部弹出，不挡菜单按钮 */
.mobile-menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    width: 100%;
    max-height: 0;
    background: rgba(10, 25, 41, 0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    overflow: hidden;
    transition: max-height 0.4s var(--ease), opacity 0.3s;
    opacity: 0;
}

.mobile-menu.active {
    max-height: calc(100vh - var(--header-h));
    opacity: 1;
    overflow-y: auto;
}

.mobile-nav {
    padding: 1.5rem 1.5rem 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
}

.mobile-link {
    display: block;
    padding: 1rem 0;
    color: #fff;
    font-size: 1.05rem;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: color 0.3s, padding-left 0.3s;
}

.mobile-link:hover, .mobile-link.active {
    color: var(--c-accent);
    padding-left: 0.5rem;
}

.mobile-contact {
    padding-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-contact a {
    color: var(--c-accent);
    font-size: 0.9rem;
}

/* ========================================
   按钮
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 50px;
    transition: all 0.3s var(--ease);
    white-space: nowrap;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-3));
    color: #fff;
    box-shadow: var(--sh-gold);
    margin-top:20px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px rgba(201, 168, 106, 0.4);
}

.btn-ghost {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--c-primary);
    border: 1.5px solid var(--c-primary);
}

.btn-outline:hover {
    background: var(--c-primary);
    color: #fff;
    transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* ========================================
   Section Header
   ======================================== */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--s-7);
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--c-accent);
    font-family: var(--f-en);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    margin-bottom: 1.25rem;
}

.section-tag::before, .section-tag::after {
    content: '';
    width: 30px;
    height: 1px;
    background: var(--c-accent);
}

.section-title {
    font-family: var(--f-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.section-desc {
    color: var(--c-text-2);
    font-size: 1.05rem;
    line-height: 1.7;
}

.section-header.light .section-title { color: #fff; }
.section-header.light .section-desc { color: rgba(255, 255, 255, 0.7); }

/* ========================================
   页面通用 Hero
   ======================================== */
.page-hero {
    position: relative;
    height: 420px;
    margin-top: 0;
    padding: 0;
    background: var(--c-primary);
    color: #fff;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(201, 168, 106, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 30%, rgba(201, 168, 106, 0.1) 0%, transparent 50%);
}

.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.page-hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    text-align: center;
}

.breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 1.5rem;
    justify-content: center;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.3s;
}

.breadcrumb a:hover { color: var(--c-accent); }

.breadcrumb .sep { color: rgba(255, 255, 255, 0.3); }

.breadcrumb .current { color: var(--c-accent); }

.page-hero h1 {
    font-family: var(--f-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.page-hero-sub {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   首页 Hero (全屏轮播)
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 640px;
    margin-top: 0;
    padding: 0;
    color: #fff;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.2s ease;
    animation: heroZoom 14s ease-in-out infinite alternate;
}

.hero-slide.active { opacity: 1; }

@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.08); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(10, 25, 41, 0.85) 0%, rgba(10, 25, 41, 0.4) 100%),
        linear-gradient(to bottom, rgba(10, 25, 41, 0.3), rgba(10, 25, 41, 0.7));
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
}

.hero-text { max-width: 800px; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 1.1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-family: var(--f-en);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    margin-bottom: 1.75rem;
    color: var(--c-accent-2);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s 0.2s var(--ease) forwards;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-accent);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
    font-family: var(--f-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-title > span {
    display: block;
    overflow: hidden;
}

.hero-title > span > span {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    animation: titleUp 0.8s var(--ease) forwards;
}

.hero-title > span:nth-child(1) > span { animation-delay: 0.4s; }
.hero-title > span:nth-child(2) > span { animation-delay: 0.6s; }
.hero-title > span:nth-child(3) > span { animation-delay: 0.8s; }

@keyframes titleUp {
    to { opacity: 1; transform: translateY(0); }
}

.accent { color: var(--c-accent); }

.hero-sub {
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.25rem;
    max-width: 600px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s 1s var(--ease) forwards;
}

.highlight {
    color: var(--c-accent);
    font-weight: 700;
}

@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s 1.2s var(--ease) forwards;
}

.hero-indicators {
    position: absolute;
    right: 2.5rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    z-index: 2;
}

.indicator {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s;
}

.indicator:hover, .indicator.active { color: var(--c-accent); }

.indicator-num {
    font-family: var(--f-en);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.indicator-line {
    display: block;
    width: 30px;
    height: 1px;
    background: currentColor;
    transition: width 0.3s var(--ease);
}

.indicator.active .indicator-line { width: 50px; }

/* ========================================
   数据模块 - 正式风格重设计
   ======================================== */
.stats {
    background: var(--c-bg);
    padding: 0;
    margin-top: -80px;
    position: relative;
    z-index: 10;
}

/* 数据模块 - 正式商务风格 */
.stats {
    padding: 5rem 0;
    background: linear-gradient(180deg, #f8f9fb 0%, #ffffff 100%);
    position: relative;
}

.stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
}

.stats-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.stats-tag {
    display: inline-block;
    font-family: var(--f-en);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: var(--c-accent);
    text-transform: uppercase;
    margin-bottom: 0.85rem;
    position: relative;
    padding: 0 1.5rem;
}

.stats-tag::before,
.stats-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 1px;
    background: var(--c-accent);
}
.stats-tag::before { left: -30px; }
.stats-tag::after { right: -30px; }

.stats-title {
    font-family: var(--f-display);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--c-primary);
    line-height: 1.3;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.stats-subtitle {
    color: var(--c-text-2);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.stats-card {
    background: #fff;
    border-radius: var(--r-4);
    box-shadow: 0 20px 60px rgba(10, 25, 41, 0.08);
    border: 1px solid rgba(201, 168, 106, 0.15);
    overflow: hidden;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    position: relative;
}

.stats-card::before,
.stats-card::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, var(--c-accent), transparent);
}
.stats-card::before { top: 0; left: 0; }
.stats-card::after { bottom: 0; right: 0; transform: rotate(180deg); }

.stat-item {
    padding: 3rem 1.5rem 2.75rem;
    text-align: center;
    position: relative;
    transition: all 0.4s var(--ease);
    background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--c-accent), var(--c-accent-2), var(--c-accent));
    transition: width 0.5s var(--ease);
}

.stat-item:hover {
    background: linear-gradient(180deg, #fffbf3 0%, #fff 100%);
    transform: translateY(-2px);
}

.stat-item:hover::before { width: 70%; }

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(201, 168, 106, 0.3), transparent);
}

.stat-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(201, 168, 106, 0.12), rgba(201, 168, 106, 0.04));
    border: 1px solid rgba(201, 168, 106, 0.2);
    border-radius: 50%;
    color: var(--c-accent);
    transition: all 0.4s var(--ease);
}

.stat-item:hover .stat-icon {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-3));
    color: #fff;
    border-color: var(--c-accent);
    transform: rotateY(180deg);
}

.stat-label-top {
    font-family: var(--f-en);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--c-text-3);
    text-transform: uppercase;
    margin-bottom: 1.1rem;
    display: block;
}

.stat-number-wrap {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.15rem;
    margin-bottom: 1rem;
    line-height: 1;
}

.stat-number {
    font-family: var(--f-display);
    font-size: 3.25rem;
    font-weight: 700;
    color: var(--c-primary);
    line-height: 1;
    display: inline-block;
    letter-spacing: -0.02em;
}

.stat-suffix {
    color: var(--c-accent);
    font-size: 1.4rem;
    font-weight: 700;
    font-family: var(--f-display);
    line-height: 1;
}

.stat-divider {
    width: 36px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
    margin: 0 auto 0.85rem;
}

.stat-label {
    color: var(--c-text-2);
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ========================================
   通用 Section
   ======================================== */
.products { background: var(--c-bg-alt); padding: var(--s-7) 0; }
.advantages { background: linear-gradient(135deg, var(--c-primary) 0%, #15243b 100%); color: #fff; padding: var(--s-7) 0; position: relative; overflow: hidden; }
.advantages::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(201, 168, 106, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.products-tabs {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.product-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: #fff;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--c-text);
    border: 1.5px solid transparent;
    box-shadow: var(--sh-1);
    transition: all 0.3s var(--ease);
}

.product-tab:hover { transform: translateY(-2px); box-shadow: var(--sh-2); }

.product-tab.active {
    background: var(--c-primary);
    color: #fff;
    border-color: var(--c-accent);
}

.product-tab.active .tab-num { color: var(--c-accent); }

.tab-num {
    font-family: var(--f-en);
    font-size: 0.75rem;
    color: var(--c-accent);
    font-weight: 700;
    transition: color 0.3s;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
    margin-bottom: 3.5rem;
    align-items: stretch;
}

.products-grid .product-card {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin: 0;
}

.product-card {
    background: #fff;
    border-radius: var(--r-4);
    overflow: hidden;
    transition: all 0.4s var(--ease);
    box-shadow: var(--sh-1);
    border: 1px solid var(--c-border);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--sh-3);
}

.product-image {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--c-bg-alt);
}

.product-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s var(--ease);
}

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

.product-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 25, 41, 0.95), transparent 60%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 1.25rem;
    opacity: 0;
    transition: opacity 0.4s;
}

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

.product-view {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.25rem;
    background: var(--c-accent);
    color: #fff;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    transform: translateY(20px);
    transition: transform 0.4s var(--ease), background 0.3s;
}

.product-card:hover .product-view { transform: translateY(0); }
.product-view:hover { background: var(--c-accent-2); }

.product-badge {
    position: absolute;
    top: 0.85rem;
    left: 0.85rem;
    background: var(--c-accent);
    color: #fff;
    padding: 0.25rem 0.65rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    border-radius: var(--r-1);
    z-index: 1;
}

.product-info { padding: 1.25rem 1.25rem 1.5rem; }

.product-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 0.2rem;
}

.product-en {
    font-family: var(--f-en);
    font-size: 0.75rem;
    color: var(--c-text-3);
    margin-bottom: 0.85rem;
    letter-spacing: 0.05em;
}

.product-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
    padding-top: 0.85rem;
    border-top: 1px solid var(--c-border);
}

.spec {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.spec span:first-child {
    font-size: 0.7rem;
    color: var(--c-text-3);
}

.spec span:last-child {
    font-size: 0.8rem;
    color: var(--c-text);
    font-weight: 500;
}

/* ========================================
   分页器 (Pagination)
   ======================================== */
.products-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.page-btn {
    min-width: 42px;
    height: 42px;
    padding: 0 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border: 1.5px solid var(--c-border);
    border-radius: var(--r-2);
    color: var(--c-text);
    font-size: 0.9rem;
    font-weight: 500;
    font-family: var(--f-en);
    cursor: pointer;
    transition: all 0.3s var(--ease);
    user-select: none;
}

.page-btn:hover:not(:disabled):not(.active) {
    border-color: var(--c-accent);
    color: var(--c-accent);
    transform: translateY(-2px);
    box-shadow: var(--sh-1);
}

.page-btn.active {
    background: var(--c-primary);
    color: #fff;
    border-color: var(--c-primary);
    box-shadow: 0 4px 12px rgba(10, 25, 41, 0.2);
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-btn.prev,
.page-btn.next {
    font-family: var(--f-zh);
    font-weight: 500;
    padding: 0 1.25rem;
}

@media (max-width: 480px) {
    .products-pagination {
        gap: 0.35rem;
    }
    .page-btn {
        min-width: 36px;
        height: 36px;
        padding: 0 0.75rem;
        font-size: 0.82rem;
    }
}

/* CTA Box */
.cta-box {
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
    color: #fff;
    border-radius: var(--r-4);
    padding: 2.5rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--c-accent) 0%, transparent 70%);
    opacity: 0.15;
    pointer-events: none;
}

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

.cta-content h3 {
    font-family: var(--f-display);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.cta-box > .btn { position: relative; z-index: 1; flex-shrink: 0; }

/* 优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

.advantage-card {
    padding: 2rem 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--r-4);
    position: relative;
    transition: all 0.4s var(--ease);
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.advantage-card:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-4px);
    border-color: rgba(201, 168, 106, 0.3);
}

.advantage-card:hover::before { opacity: 1; }

.advantage-num {
    font-family: var(--f-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--c-accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 1rem;
}

.advantage-icon {
    color: var(--c-accent);
    margin-bottom: 1.25rem;
    display: inline-flex;
}

.advantage-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: #fff;
}

.advantage-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* ========================================
   案例
   ======================================== */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.35rem;
    background: transparent;
    color: var(--c-text);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s var(--ease);
    border: 1px solid var(--c-border);
}

.filter-btn:hover {
    border-color: var(--c-accent);
    color: var(--c-accent);
}

.filter-btn.active {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}

.filter-count {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.1rem 0.5rem;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50px;
}

.filter-btn.active .filter-count { background: rgba(255, 255, 255, 0.2); }

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.case-card {
    position: relative;
    border-radius: var(--r-4);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--c-bg-alt);
    box-shadow: var(--sh-1);
    transition: all 0.4s var(--ease);
    cursor: pointer;
}

.case-card.large {
    /* 保留类以防其他位置引用，但不再强制大尺寸 */
    grid-column: auto;
    grid-row: auto;
    aspect-ratio: 4 / 3;
}

.case-card:hover {
    box-shadow: var(--sh-3);
    transform: translateY(-4px);
}

.case-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s var(--ease);
}

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

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 25, 41, 0.95) 0%, rgba(10, 25, 41, 0.3) 50%, transparent 100%);
}

.case-content {
    position: absolute;
    inset: 0;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    color: #fff;
    z-index: 1;
}

.case-tag {
    display: inline-block;
    align-self: flex-start;
    background: var(--c-accent);
    color: #fff;
    padding: 0.25rem 0.7rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    border-radius: var(--r-1);
    margin-bottom: 0.6rem;
    text-transform: uppercase;
}

.case-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    line-height: 1.3;
}

.case-card.large .case-content h3 { font-size: 1.15rem; }

.case-content p {
    font-size: 0.85rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0.85rem;
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    padding-top: 0.85rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.case-info {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.78rem;
}

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

/* ========================================
   企业资质 - 真实证书图片版
   ======================================== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3.5rem;
}

.cert-card {
    background: #fff;
    border-radius: var(--r-3);
    overflow: hidden;
    box-shadow: var(--sh-1);
    border: 1px solid var(--c-border);
    transition: all 0.3s var(--ease);
}

.cert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sh-3);
    border-color: var(--c-accent);
}

.cert-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--c-bg-alt);
    position: relative;
}

.cert-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s var(--ease);
}

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

.cert-image::after {
    content: '';
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
    pointer-events: none;
}

.cert-info {
    padding: 1.4rem 1.25rem;
    border-top: 1px solid var(--c-border);
    text-align: center;
    background: linear-gradient(180deg, #fff 0%, #fdfbf6 100%);
}

.cert-info h4 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--c-primary);
    margin: 0;
    line-height: 1.35;
    letter-spacing: 0.005em;
    position: relative;
    display: inline-block;
}

.cert-info h4::after {
    content: '';
    display: block;
    width: 32px;
    height: 2px;
    margin: 0.55rem auto 0;
    background: linear-gradient(90deg, var(--c-accent), var(--c-accent-3));
    border-radius: 2px;
    transition: width 0.3s var(--ease);
}

.cert-card:hover .cert-info h4::after {
    width: 64px;
}

.honors-section {
    background: linear-gradient(135deg, #fafbfc 0%, #fff 50%, #f8f6f1 100%);
    border-radius: var(--r-4);
    padding: 3.5rem 2.5rem;
    margin-bottom: 2.5rem;
    box-shadow: var(--sh-2);
    border: 1px solid rgba(201, 168, 106, 0.15);
    position: relative;
    overflow: hidden;
}

.honors-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent 0%, var(--c-accent) 20%, var(--c-accent-2) 50%, var(--c-accent) 80%, transparent 100%);
}

.honors-section::after {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(201, 168, 106, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.honors-title, .culture-title, .timeline-title, .map-title {
    font-family: var(--f-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--c-primary);
    text-align: center;
    margin-bottom: 0.5rem;
    position: relative;
    letter-spacing: 0.05em;
}

.honors-title-sub {
    text-align: center;
    font-family: var(--f-en);
    font-size: 0.85rem;
    color: var(--c-accent);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: 2.5rem;
    font-weight: 500;
}

.honors-title::after, .culture-title::after, .timeline-title::after, .map-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
    margin: 1rem auto 0;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
    position: relative;
    z-index: 1;
}

.honor-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #fff;
    border-radius: var(--r-3);
    transition: all 0.4s var(--ease);
    border: 1px solid rgba(201, 168, 106, 0.2);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(10, 25, 41, 0.04);
}

.honor-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--c-accent), var(--c-accent-3));
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.4s var(--ease);
}

.honor-item:hover {
    background: #fff;
    transform: translateX(6px);
    box-shadow: 0 12px 32px rgba(10, 25, 41, 0.1);
    border-color: var(--c-accent);
}

.honor-item:hover::before {
    transform: scaleY(1);
    transform-origin: top;
}

.honor-image {
    width: 110px;
    height: 110px;
    flex-shrink: 0;
    border-radius: var(--r-2);
    overflow: hidden;
    background: linear-gradient(135deg, #f6f7f9, #e8e9ed);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.honor-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid var(--c-accent);
    border-radius: var(--r-2);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.honor-item:hover .honor-image::after {
    opacity: 0.4;
}

.honor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s var(--ease);
}

.honor-item:hover .honor-image img {
    transform: scale(1.08);
}

.honor-content {
    flex: 1;
    min-width: 0;
}

.honor-content h4 {
    font-family: var(--f-zh);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 0.4rem;
    line-height: 1.4;
    letter-spacing: 0.02em;
}

.honor-org {
    font-size: 0.8rem;
    color: var(--c-text-2);
    line-height: 1.5;
    margin-bottom: 0.65rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.honor-org svg {
    flex-shrink: 0;
    color: var(--c-accent);
}

.honor-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.honor-item .honor-year {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-family: var(--f-en);
    font-size: 0.78rem;
    color: var(--c-accent);
    font-weight: 700;
    padding: 0.2rem 0.7rem;
    background: rgba(201, 168, 106, 0.1);
    border-radius: 50px;
    border: 1px solid rgba(201, 168, 106, 0.25);
}

.honor-item .honor-tag {
    display: inline-block;
    font-family: var(--f-en);
    font-size: 0.7rem;
    color: var(--c-text-3);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
}

/* ========================================
   关于我们
   ======================================== */
.about-profile {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
    margin-bottom: 5rem;
}

.profile-content h3 {
    font-family: var(--f-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 1.25rem;
    position: relative;
    padding-left: 1.25rem;
}

.profile-content h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.3em;
    width: 4px;
    height: 1.4em;
    background: var(--c-accent);
}

.profile-content p {
    color: var(--c-text-2);
    line-height: 1.85;
    margin-bottom: 0.85rem;
    font-size: 0.95rem;
}

.profile-content strong { color: var(--c-accent-3); font-weight: 600; }

.profile-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.75rem;
    padding-top: 1.75rem;
    border-top: 1px solid var(--c-border);
}

.feature { text-align: center; }

.feature-num {
    font-family: var(--f-display);
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--c-accent);
    line-height: 1;
    margin-bottom: 0.2rem;
}

.feature-text { font-size: 0.85rem; color: var(--c-text-2); }

.profile-image {
    position: relative;
    height: 460px;
    width: 100%;
}

.profile-img {
    position: absolute;
    border-radius: var(--r-4);
    overflow: hidden;
    box-shadow: var(--sh-3);
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 0.5s var(--ease), box-shadow 0.4s var(--ease);
}

.profile-image .profile-img-main {
    top: 0;
    left: 0;
    width: 70%;
    height: 70%;
    z-index: 1;
}

.profile-image .profile-img-small {
    bottom: 0;
    right: 0;
    width: 55%;
    height: 55%;
    z-index: 2;
    border: 8px solid #fff;
}

.profile-image:hover .profile-img-main { transform: scale(1.03); }
.profile-image:hover .profile-img-small { transform: scale(1.05); }

/* 时间线 - 专业商务风 */
.timeline {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 0;
}

/* 中间主轴线 */
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg,
        var(--c-accent) 0%,
        var(--c-accent) 50%,
        rgba(201, 168, 106, 0.3) 100%);
    transform: translateX(-50%);
    border-radius: 2px;
}

/* 顶部装饰 - 起点 */
.timeline::after {
    content: 'EST. 2015';
    position: absolute;
    left: 50%;
    top: -1.5rem;
    transform: translateX(-50%);
    background: var(--c-accent);
    color: #fff;
    font-family: var(--f-en);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    box-shadow: 0 4px 16px rgba(201, 168, 106, 0.3);
    z-index: 2;
}

.timeline-item {
    position: relative;
    width: calc(50% - 60px);
    padding: 1.5rem 1.75rem;
    margin-bottom: 2.5rem;
    background: #fff;
    border-radius: var(--r-3);
    box-shadow: 0 8px 24px rgba(10, 25, 41, 0.06);
    border: 1px solid var(--c-border);
    transition: all 0.4s var(--ease);
}

/* 左侧卡片 */
.timeline-item:nth-child(odd) {
    margin-left: 0;
    margin-right: auto;
    text-align: left;
    padding-right: 1.75rem;
}

/* 右侧卡片 */
.timeline-item:nth-child(even) {
    margin-left: auto;
    margin-right: 0;
    text-align: left;
    padding-left: 1.75rem;
}

.timeline-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(10, 25, 41, 0.12);
    border-color: var(--c-accent);
}

/* 中心圆点 - 改进版 */
.timeline-item::before {
    content: '';
    position: absolute;
    top: 2rem;
    width: 20px;
    height: 20px;
    background: #fff;
    border: 3px solid var(--c-accent);
    border-radius: 50%;
    z-index: 1;
    transition: all 0.3s var(--ease);
}

.timeline-item:nth-child(odd)::before {
    right: -70px;
}

.timeline-item:nth-child(even)::before {
    left: -70px;
}

.timeline-item:hover::before {
    background: var(--c-accent);
    box-shadow: 0 0 0 6px rgba(201, 168, 106, 0.2);
    transform: scale(1.15);
}

/* 中心圆点到卡片的连接线 */
.timeline-item::after {
    content: '';
    position: absolute;
    top: 2.5rem;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--c-accent), rgba(201, 168, 106, 0.2));
    z-index: 0;
}

.timeline-item:nth-child(odd)::after {
    right: -50px;
    background: linear-gradient(90deg, rgba(201, 168, 106, 0.2), var(--c-accent));
}

.timeline-item:nth-child(even)::after {
    left: -50px;
    background: linear-gradient(90deg, var(--c-accent), rgba(201, 168, 106, 0.2));
}

.timeline-year {
    display: inline-block;
    font-family: var(--f-display);
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--c-accent);
    line-height: 1;
    margin-bottom: 0.6rem;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 0.5rem;
}

.timeline-year::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--c-accent);
    border-radius: 2px;
}

.timeline-content h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.timeline-content p {
    font-size: 0.88rem;
    color: var(--c-text-2);
    line-height: 1.65;
}

/* 文化 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
    margin-bottom: 2.5rem;
}

.culture-card {
    background: #fff;
    padding: 2.25rem 1.5rem;
    border-radius: var(--r-4);
    text-align: center;
    border: 1px solid var(--c-border);
    box-shadow: var(--sh-1);
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}

.culture-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-3));
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 0;
}

.culture-card > * { position: relative; z-index: 1; }

.culture-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sh-2);
    color: #fff;
    border-color: var(--c-accent);
}

.culture-card:hover::before { opacity: 1; }

.culture-card:hover h4,
.culture-card:hover p { color: #fff; }

.culture-icon {
    color: var(--c-accent);
    margin-bottom: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(201, 168, 106, 0.1);
    transition: all 0.4s;
}

.culture-card:hover .culture-icon {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.culture-card h4 {
    font-family: var(--f-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 0.75rem;
    transition: color 0.4s;
}

.culture-card p {
    color: var(--c-text-2);
    font-size: 0.92rem;
    line-height: 1.7;
    transition: color 0.4s;
}

/* ========================================
   联系我们
   ======================================== */
.contact { background: var(--c-bg-alt); }

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.contact-info {
    background: var(--c-primary);
    color: #fff;
    padding: 2.5rem;
    border-radius: var(--r-4);
    position: relative;
    overflow: hidden;
}

.contact-info::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--c-accent) 0%, transparent 60%);
    opacity: 0.12;
    pointer-events: none;
}

.contact-info h3, .contact-form-wrap h3 {
    font-family: var(--f-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
    position: relative;
}

.contact-info h3 { color: #fff; }
.contact-form-wrap h3 { color: var(--c-primary); }

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 2rem;
    position: relative;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 106, 0.15);
    color: var(--c-accent);
    border-radius: 50%;
    border: 1px solid rgba(201, 168, 106, 0.3);
}

.contact-detail {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    flex: 1;
}

.contact-label {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.6);
}

.contact-value {
    color: #fff;
    font-size: 1rem;
    font-weight: 500;
}

.contact-note {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
}

.contact-social {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.social-label {
    display: block;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.social-icons { display: flex; gap: 0.6rem; }

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #fff;
    transition: all 0.3s var(--ease);
}

.social-icon:hover {
    background: var(--c-accent);
    border-color: var(--c-accent);
    transform: translateY(-2px);
}

.contact-form-wrap {
    background: #fff;
    padding: 2.5rem;
    border-radius: var(--r-4);
    border: 1px solid var(--c-border);
    box-shadow: var(--sh-1);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.1rem;
}

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--c-text);
}

.required { color: #e74c3c; }

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.8rem 1rem;
    background: var(--c-bg-alt);
    border: 1.5px solid var(--c-border);
    border-radius: var(--r-2);
    color: var(--c-text);
    font-size: 0.95rem;
    transition: all 0.3s;
    width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--c-accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

/* 真实地图容器 */
.map-section {
    background: #fff;
    padding: 2rem;
    border-radius: var(--r-4);
    border: 1px solid var(--c-border);
    box-shadow: var(--sh-1);
}

.map-container {
    margin-top: 1.5rem;
    border-radius: var(--r-3);
    overflow: hidden;
    height: 450px;
    position: relative;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

.map-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a2942 0%, #2d4263 100%);
    color: #fff;
    text-align: center;
    padding: 2rem;
}

/* ========================================
   页脚 - 全新设计
   ======================================== */
.footer {
    background: linear-gradient(180deg, #1a2942 0%, #0f1a2a 100%);
    color: rgba(255, 255, 255, 0.7);
    position: relative;
    overflow: hidden;
}

/* 顶部金色装饰线 */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
    z-index: 1;
}

/* 背景光晕 */
.footer::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 168, 106, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

/* ========================================
   顶部品牌横幅
   ======================================== */
.footer-banner {
    padding: 3.5rem 0 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    z-index: 2;
}

.banner-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.banner-brand {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.banner-logo {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    background: rgba(201, 168, 106, 0.1);
    border: 1px solid rgba(201, 168, 106, 0.2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s var(--ease);
}

.banner-logo:hover {
    background: rgba(201, 168, 106, 0.15);
    border-color: rgba(201, 168, 106, 0.4);
    transform: rotate(5deg);
}

.banner-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 0.35rem;
    letter-spacing: 0.05em;
}

.banner-subtitle {
    font-size: 0.78rem;
    color: var(--c-accent);
    letter-spacing: 0.15em;
    margin: 0;
    font-weight: 500;
}

.banner-contact {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.banner-contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.banner-contact-label {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: 500;
}

.banner-contact-value {
    font-size: 1.1rem;
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-decoration: none;
    transition: color 0.3s;
}

.banner-contact-value:hover {
    color: var(--c-accent);
}

.banner-contact-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, transparent, rgba(201, 168, 106, 0.4), transparent);
}

/* ========================================
   主体三列内容
   ======================================== */
.footer-main {
    padding: 4rem 0 3rem;
    position: relative;
    z-index: 2;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
}

.footer-col-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 0.4rem;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 0.85rem;
}

.footer-col-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--c-accent);
    border-radius: 1px;
}

.footer-col-en {
    display: inline-block;
    font-size: 0.65rem;
    color: var(--c-accent);
    letter-spacing: 0.3em;
    margin-bottom: 1.5rem;
    font-weight: 500;
    opacity: 0.8;
}

.footer-col-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.footer-col-list a {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s var(--ease);
    display: inline-block;
    position: relative;
    padding-left: 0;
}

.footer-col-list a::before {
    content: '';
    position: absolute;
    left: -1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 1px;
    background: var(--c-accent);
    transition: width 0.3s var(--ease);
}

.footer-col-list a:hover {
    color: var(--c-accent);
    padding-left: 1rem;
}

.footer-col-list a:hover::before {
    width: 0.7rem;
}

/* 联系方式行 */
.footer-contact-list {
    gap: 1rem;
}

.footer-contact-row {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
    line-height: 1.5;
}

.footer-contact-row svg {
    flex-shrink: 0;
    color: var(--c-accent);
    opacity: 0.85;
}

.footer-contact-row span {
    flex: 1;
}

/* ========================================
   底部版权
   ======================================== */
.footer-bottom {
    background: rgba(0, 0, 0, 0.25);
    padding: 1.5rem 0;
    position: relative;
    z-index: 2;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.45);
}

.copyright,
.designer {
    margin: 0;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.45);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: var(--c-accent);
}

.heart {
    color: #e74c3c;
    display: inline-block;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ========================================
   页脚响应式
   ======================================== */
@media (max-width: 1024px) {
    .banner-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }

    .banner-contact {
        width: 100%;
        justify-content: flex-start;
        gap: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    .footer-banner {
        padding: 2.5rem 0 2rem;
    }

    .banner-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .banner-brand {
        flex-direction: column;
        text-align: center;
    }

    .banner-contact {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }

    .banner-contact-divider {
        width: 60px;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(201, 168, 106, 0.4), transparent);
    }

    .footer-main {
        padding: 3rem 0 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer-col-title {
        font-size: 1.1rem;
    }

    .footer-col-title::after {
        left: 50%;
        transform: translateX(-50%);
    }

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

    .footer-col-en {
        display: block;
        text-align: center;
    }

    .footer-col-list {
        align-items: center;
    }

    .footer-contact-row {
        justify-content: center;
    }

    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
}

/* 返回顶部 */
.back-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 46px;
    height: 46px;
    background: var(--c-accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    box-shadow: var(--sh-gold);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s var(--ease);
}

.back-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-top:hover {
    background: var(--c-accent-2);
    transform: translateY(-3px);
}

/* ========================================
   通知
   ======================================== */
.notification {
    position: fixed;
    top: 100px;
    right: -400px;
    z-index: 9999;
    background: #fff;
    padding: 1rem 1.5rem;
    border-radius: var(--r-3);
    box-shadow: 0 20px 60px rgba(10, 25, 41, 0.2);
    transition: right 0.4s var(--ease);
    max-width: 380px;
    border-left: 4px solid var(--c-accent);
}

.notification.show { right: 2rem; }
.notification-success { border-left-color: #2ecc71; }
.notification-error { border-left-color: #e74c3c; }

.notification-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--c-text);
    font-size: 0.92rem;
    font-weight: 500;
}

.notification-success .notification-content svg { color: #2ecc71; }
.notification-error .notification-content svg { color: #e74c3c; }

/* ========================================
   动画
   ======================================== */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
    .nav-link { padding: 0.5rem 0.75rem; font-size: 0.9rem; }
    .header-phone { display: none; }
    .hero-indicators { display: none; }
    .stats-card { grid-template-columns: repeat(2, 1fr); }
    .stat-item:nth-child(2)::after { display: none; }
    .stat-item:nth-child(odd)::after { display: none; }
    .stat-item { padding: 2.25rem 1rem 2rem; }
    .stat-number { font-size: 2.75rem; }
    .stat-icon { width: 46px; height: 46px; margin-bottom: 1rem; }
    .stats-title { font-size: 1.85rem; }
    .advantages-grid, .footer-contact-cards { grid-template-columns: repeat(2, 1fr); }
    .honors-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid, .certs-grid, .culture-grid { grid-template-columns: repeat(2, 1fr); }
    .case-card.large { grid-column: auto; grid-row: auto; aspect-ratio: 4 / 3; }
    .about-profile { grid-template-columns: 1fr; gap: 2rem; }
    .profile-image { height: 400px; width: 100%; }
    .profile-image .profile-img { width: 100% !important; height: 100% !important; }
    .profile-image .profile-img-main { position: relative; width: 100% !important; height: 280px !important; }
    .profile-image .profile-img-small { position: relative; width: 100% !important; height: 220px !important; margin-top: 1rem; border-width: 4px; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr 1fr 1fr; gap: 2rem; }
    .footer-brand { grid-column: 1 / -1; padding: 0; text-align: center; }
    .footer-top::before, .footer-top::after { display: none; }
    .footer-top > .footer-col:nth-of-type(1),
    .footer-top > .footer-col:nth-of-type(2) { text-align: center; padding: 0 1rem; }
    .footer-top > .footer-col:nth-of-type(1) h4::after,
    .footer-top > .footer-col:nth-of-type(2) h4::after {
        left: 50%;
        transform: translateX(-50%);
        right: auto;
    }
    .timeline::before { left: 1.25rem; width: 2px; }
    .timeline::after { font-size: 0.6rem; padding: 0.3rem 0.75rem; }
    .timeline-item { width: calc(100% - 50px); margin-left: 2.5rem !important; margin-right: 0 !important; text-align: left !important; padding: 1.25rem 1.25rem !important; margin-bottom: 1.5rem; }
    .timeline-item::before { left: -2.1rem !important; right: auto !important; top: 1.5rem; width: 16px; height: 16px; }
    .timeline-item::after { left: -1.85rem !important; right: auto !important; top: 1.95rem; width: 30px; }
    .timeline-year { font-size: 1.5rem; }
}

@media (max-width: 768px) {
    :root {
        --header-h: 64px;
        --s-7: 4rem;
    }

    .nav { display: none; }
    .menu-toggle { display: flex; }

    .hero { min-height: 600px; }
    .page-hero { height: 320px; }

    .stats-card { grid-template-columns: 1fr 1fr; }
    .stat-item { padding: 1.5rem 0.75rem; }
    .stat-number { font-size: 2.25rem; }
    .stat-item::after { display: none !important; }

    .products-grid { grid-template-columns: 1fr; }
    .cases-grid, .certs-grid, .advantages-grid, .honors-grid, .culture-grid, .footer-contact-cards {
        grid-template-columns: 1fr;
    }

    .case-card.large { grid-column: span 1; aspect-ratio: 4 / 3; }
    .profile-image { height: auto; width: 100%; }
    .profile-image .profile-img { width: 100% !important; }
    .profile-image .profile-img-main { width: 100% !important; height: 240px !important; position: relative; }
    .profile-image .profile-img-small { width: 100% !important; height: 200px !important; position: relative; margin-top: 1rem; border-width: 4px; }
    .cta-box { flex-direction: column; text-align: center; padding: 2rem 1.5rem; }
    .cta-content h3 { font-size: 1.3rem; }

    .form-row { grid-template-columns: 1fr; }
    .contact-info, .contact-form-wrap, .map-section, .honors-section { padding: 1.75rem 1.25rem; }
    .profile-features { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
    .feature-num { font-size: 1.5rem; }

    .footer-top { grid-template-columns: 1fr; gap: 2rem; }
    .footer-brand { grid-column: auto; text-align: center; padding: 0; }
    .footer-top > .footer-col:nth-of-type(1),
    .footer-top > .footer-col:nth-of-type(2) { text-align: center; padding: 0 1rem; }
    .footer-top > .footer-col:nth-of-type(1) h4::after,
    .footer-top > .footer-col:nth-of-type(2) h4::after {
        left: 50%;
        transform: translateX(-50%);
        right: auto;
    }
    .footer-bottom { flex-direction: column; }

    .hero-buttons { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }

    .back-top { bottom: 1rem; right: 1rem; width: 42px; height: 42px; }

    .section-title { font-size: 1.75rem; }

    .notification { top: 80px; right: -100%; left: 1rem; max-width: calc(100% - 2rem); }
    .notification.show { right: 1rem; }
}

@media (max-width: 480px) {
    .container { padding: 0 1rem; }
    .product-tab { padding: 0.65rem 1.1rem; font-size: 0.85rem; }
    .tab-num { display: none; }
    .stat-number { font-size: 2rem; }
    .product-specs { grid-template-columns: 1fr; }
}

/* ========================================
   Collapsible CTA Module
   ======================================== */
.cta-box.cta-collapsible {
    flex-wrap: wrap;
    align-items: stretch;
    position: relative;
    transition: padding 0.4s var(--ease);
}

.cta-box.cta-collapsible .cta-content { flex: 1; min-width: 0; }

.cta-box.cta-collapsible .cta-header-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
    position: relative;
}

.cta-box.cta-collapsible .cta-header-row h3 {
    flex: 1;
    min-width: 0;
    margin-bottom: 0;
}

.cta-box.cta-collapsible .cta-toggle {
    position: relative;
    z-index: 2;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: rgba(201, 168, 106, 0.15);
    border: 1px solid rgba(201, 168, 106, 0.45);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s var(--ease);
}

.cta-box.cta-collapsible .cta-toggle:hover {
    background: var(--c-accent);
    border-color: var(--c-accent);
    transform: scale(1.05);
    box-shadow: 0 6px 18px rgba(201, 168, 106, 0.35);
}

.cta-box.cta-collapsible .cta-toggle:focus-visible {
    outline: 2px solid var(--c-accent-2);
    outline-offset: 2px;
}

.cta-box.cta-collapsible .cta-toggle .cta-chevron {
    transition: transform 0.4s var(--ease);
    display: block;
}

.cta-box.cta-collapsible.cta-collapsed .cta-toggle .cta-chevron {
    transform: rotate(180deg);
}

.cta-box.cta-collapsible .cta-collapsible-body {
    flex: 0 0 100%;
    display: flex;
    align-items: center;
    gap: 2rem;
    width: 100%;
    overflow: hidden;
    max-height: 220px;
    opacity: 1;
    margin-top: 0.6rem;
    transition: max-height 0.5s var(--ease),
                opacity 0.4s ease,
                margin-top 0.4s var(--ease),
                padding-top 0.4s var(--ease);
    padding-top: 0.4rem;
    position: relative;
    z-index: 1;
}

.cta-box.cta-collapsible.cta-collapsed .cta-collapsible-body {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    padding-top: 0;
    pointer-events: none;
}

.cta-box.cta-collapsible.cta-collapsed {
    padding-top: 1.75rem;
    padding-bottom: 1.75rem;
    align-items: center;
}

.cta-box.cta-collapsible.cta-collapsed .cta-content {
    align-items: center;
}

.cta-box.cta-collapsible .btn {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    margin-top: 0 !important;
}

/* Smooth icon button press feedback */
.cta-box.cta-collapsible .cta-toggle:active {
    transform: scale(0.96);
}

/* Responsive: small screens */
@media (max-width: 768px) {
    .cta-box.cta-collapsible .cta-collapsible-body {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .cta-box.cta-collapsible .btn {
        width: 100%;
        justify-content: center;
    }

    .cta-box.cta-collapsible .cta-toggle {
        width: 40px;
        height: 40px;
    }

    .cta-box.cta-collapsible .cta-header-row h3 {
        font-size: 1.2rem;
    }
}

/* ========================================
   Surface Treatment Product Cards
   Visually-styled cards using CSS gradients/SVG to
   represent each surface finish (no real image assets).
   ======================================== */

/* Visual swatches for surface treatment cards */
.surface-swatch {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s var(--ease);
}

.product-card:hover .surface-swatch { transform: scale(1.08); }

/* PVDF — solid rich color (fluorocarbon) */
.swatch-pvdf-blue   { background: linear-gradient(135deg, #4a90e2 0%, #357abd 50%, #1e5fa3 100%); }
.swatch-pvdf-green  { background: linear-gradient(135deg, #50c878 0%, #2e8b57 50%, #1a5c3a 100%); }
.swatch-pvdf-red    { background: linear-gradient(135deg, #e85a4f 0%, #c0392b 50%, #962d22 100%); }

/* Powder — matte soft solid */
.swatch-powder-charcoal { background: linear-gradient(135deg, #4a4a4a 0%, #2c2c2c 50%, #1a1a1a 100%); }
.swatch-powder-cream    { background: linear-gradient(135deg, #f5e6c8 0%, #e6d4a8 50%, #c9a86a 100%); }
.swatch-powder-white    { background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 50%, #d8d8d8 100%); }

/* Coil — metallic silver/champagne */
.swatch-coil-silver     { background: linear-gradient(135deg, #e8e8e8 0%, #c0c0c0 40%, #8e8e8e 100%); }
.swatch-coil-champagne  { background: linear-gradient(135deg, #f0e2c4 0%, #d4b890 40%, #a88a52 100%); }
.swatch-coil-bronze     { background: linear-gradient(135deg, #cd9b6a 0%, #a87a4a 40%, #6e4f2c 100%); }

/* Anodized — bronze/copper metallic with subtle radial sheen */
.swatch-anodized-bronze { background: radial-gradient(circle at 30% 30%, #d4a574 0%, #b07a3a 50%, #6b4515 100%); }
.swatch-anodized-gold   { background: radial-gradient(circle at 30% 30%, #f4d77a 0%, #c9a64e 50%, #7a5a1e 100%); }
.swatch-anodized-black  { background: radial-gradient(circle at 30% 30%, #4a4a4a 0%, #1a1a1a 50%, #000000 100%); }

/* Baked enamel — high gloss */
.swatch-baked-gloss-red    { background: radial-gradient(circle at 30% 20%, #ff8e7a 0%, #e85a4f 40%, #962d22 100%); }
.swatch-baked-gloss-white  { background: radial-gradient(circle at 30% 20%, #ffffff 0%, #f5f5f5 40%, #d0d0d0 100%); }
.swatch-baked-gloss-navy   { background: radial-gradient(circle at 30% 20%, #5a7fb0 0%, #2d4263 40%, #0a1929 100%); }

/* Decorative — pattern-based swatches */
.swatch-decor-wood {
    background:
        repeating-linear-gradient(90deg, rgba(0,0,0,0.06) 0 2px, transparent 2px 8px),
        repeating-linear-gradient(90deg, rgba(0,0,0,0.12) 0 1px, transparent 1px 24px),
        linear-gradient(135deg, #b07a3a 0%, #8b5a2b 50%, #5a3a1a 100%);
}
.swatch-decor-brushed {
    background:
        repeating-linear-gradient(90deg, rgba(255,255,255,0.18) 0 1px, transparent 1px 3px),
        linear-gradient(180deg, #c8c8c8 0%, #8a8a8a 50%, #4a4a4a 100%);
}
.swatch-decor-stone {
    background:
        radial-gradient(ellipse at 20% 30%, rgba(255,255,255,0.15) 0 8%, transparent 12%),
        radial-gradient(ellipse at 70% 60%, rgba(0,0,0,0.18) 0 6%, transparent 10%),
        radial-gradient(ellipse at 40% 80%, rgba(0,0,0,0.12) 0 10%, transparent 14%),
        linear-gradient(135deg, #d8d4cc 0%, #b8b0a4 50%, #8a8278 100%);
}
.swatch-decor-mirror {
    background:
        linear-gradient(135deg, rgba(255,255,255,0.5) 0%, transparent 30%, transparent 70%, rgba(0,0,0,0.3) 100%),
        linear-gradient(180deg, #e0e0e0 0%, #a8a8a8 50%, #707070 100%);
}
.swatch-decor-copper {
    background:
        radial-gradient(circle at 70% 30%, rgba(0,80,40,0.4) 0 12%, transparent 18%),
        radial-gradient(circle at 30% 70%, rgba(0,80,40,0.3) 0 8%, transparent 14%),
        linear-gradient(135deg, #d4a574 0%, #a87a3a 50%, #6b4515 100%);
}


/* ===========================================================
   Grille & Decorative Panel swatches (3 colourways x 6 profiles = 18)
   =========================================================== */

/* --- Small Great Wall Panel: stepped/brick-course horizontal lines --- */
.swatch-great-wall-warm {
    background:
        repeating-linear-gradient(0deg,
            rgba(0,0,0,0.18) 0 2px,
            transparent 2px 7px,
            rgba(255,255,255,0.10) 7px 10px,
            transparent 10px 18px),
        linear-gradient(135deg, #c89968 0%, #9c6f3e 50%, #5e3f1d 100%);
}
.swatch-great-wall-stone {
    background:
        repeating-linear-gradient(0deg,
            rgba(0,0,0,0.16) 0 2px,
            transparent 2px 7px,
            rgba(255,255,255,0.10) 7px 10px,
            transparent 10px 18px),
        linear-gradient(135deg, #c2b9a8 0%, #8a8275 50%, #4a4438 100%);
}
.swatch-great-wall-charcoal {
    background:
        repeating-linear-gradient(0deg,
            rgba(0,0,0,0.30) 0 2px,
            transparent 2px 7px,
            rgba(255,255,255,0.08) 7px 10px,
            transparent 10px 18px),
        linear-gradient(135deg, #4a4a4a 0%, #2a2a2a 50%, #0d0d0d 100%);
}

/* --- Box Slat Grille: vertical rectangular tubes --- */
.swatch-box-slat-4 {
    background:
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.35) 0 18px,
            rgba(255,255,255,0.10) 18px 19px,
            transparent 19px 28px),
        linear-gradient(180deg, #b8a98a 0%, #7d6a47 50%, #3a2e1a 100%);
}
.swatch-box-slat-6 {
    background:
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.35) 0 26px,
            rgba(255,255,255,0.10) 26px 27px,
            transparent 27px 40px),
        linear-gradient(180deg, #8a8a8a 0%, #4a4a4a 50%, #1a1a1a 100%);
}
.swatch-box-slat-uni {
    background:
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.30) 0 22px,
            rgba(255,255,255,0.12) 22px 24px,
            transparent 24px 36px),
        linear-gradient(180deg, #d4c4a0 0%, #9c7e4a 50%, #4e3a1c 100%);
}

/* --- Thin Slat Fluted Panel: very fine vertical lines --- */
.swatch-thin-slat-silver {
    background:
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.25) 0 2px,
            rgba(255,255,255,0.18) 2px 4px,
            transparent 4px 9px),
        linear-gradient(180deg, #d8d8d8 0%, #9a9a9a 50%, #4a4a4a 100%);
}
.swatch-thin-slat-black {
    background:
        repeating-linear-gradient(90deg,
            rgba(255,255,255,0.18) 0 1px,
            rgba(0,0,0,0.30) 1px 3px,
            transparent 3px 9px),
        linear-gradient(180deg, #3a3a3a 0%, #1a1a1a 50%, #000000 100%);
}
.swatch-thin-slat-bronze {
    background:
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.25) 0 2px,
            rgba(255,255,255,0.20) 2px 4px,
            transparent 4px 9px),
        linear-gradient(180deg, #c89868 0%, #8a5a2e 50%, #3e2510 100%);
}

/* --- Half-Round Fluted Panel: convex (outward) ribs in profile --- */
.swatch-half-round-warm {
    background:
        radial-gradient(circle at 12px 50%,
            rgba(255,255,255,0.22) 0 6px,
            transparent 7px),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.22) 0 1px,
            transparent 1px 24px),
        linear-gradient(180deg, #c89968 0%, #8a5a2e 50%, #3e2510 100%);
}
.swatch-half-round-cream {
    background:
        radial-gradient(circle at 12px 50%,
            rgba(255,255,255,0.30) 0 6px,
            transparent 7px),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.18) 0 1px,
            transparent 1px 24px),
        linear-gradient(180deg, #f0e6d0 0%, #c8b890 50%, #806a48 100%);
}
.swatch-half-round-anth {
    background:
        radial-gradient(circle at 12px 50%,
            rgba(255,255,255,0.18) 0 6px,
            transparent 7px),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.30) 0 1px,
            transparent 1px 24px),
        linear-gradient(180deg, #5a5a5e 0%, #2e2e32 50%, #0a0a0c 100%);
}

/* --- Inner-Arc Panel: concave (inward) ribs in profile --- */
.swatch-inner-arc-wood {
    background:
        radial-gradient(circle at 50% 50%,
            transparent 8px,
            rgba(0,0,0,0.30) 9px 11px,
            transparent 12px),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.22) 0 1px,
            transparent 1px 28px),
        linear-gradient(180deg, #b88450 0%, #7d4f1e 50%, #3a2308 100%);
}
.swatch-inner-arc-stone {
    background:
        radial-gradient(circle at 50% 50%,
            transparent 8px,
            rgba(0,0,0,0.28) 9px 11px,
            transparent 12px),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.20) 0 1px,
            transparent 1px 28px),
        linear-gradient(180deg, #d4c8b0 0%, #9a8c70 50%, #4a4232 100%);
}
.swatch-inner-arc-graphic {
    background:
        radial-gradient(circle at 50% 50%,
            transparent 8px,
            rgba(255,255,255,0.30) 9px 11px,
            transparent 12px),
        repeating-linear-gradient(90deg,
            rgba(255,255,255,0.18) 0 1px,
            transparent 1px 28px),
        linear-gradient(180deg, #2a2a2a 0%, #0a0a0a 50%, #000000 100%);
}

/* --- Bendable Tambour Panel: curved/rotating vertical slats --- */
.swatch-bendable-warm {
    background:
        radial-gradient(ellipse 18px 60px at 50% 50%,
            rgba(0,0,0,0.20) 0%,
            transparent 70%),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.30) 0 14px,
            rgba(255,255,255,0.18) 14px 18px,
            transparent 18px 32px),
        linear-gradient(180deg, #b88450 0%, #7d4f1e 50%, #3a2308 100%);
}
.swatch-bendable-white {
    background:
        radial-gradient(ellipse 18px 60px at 50% 50%,
            rgba(0,0,0,0.10) 0%,
            transparent 70%),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.20) 0 14px,
            rgba(255,255,255,0.30) 14px 18px,
            transparent 18px 32px),
        linear-gradient(180deg, #f0f0f0 0%, #c0c0c0 50%, #6a6a6a 100%);
}
.swatch-bendable-bronze {
    background:
        radial-gradient(ellipse 18px 60px at 50% 50%,
            rgba(0,0,0,0.25) 0%,
            transparent 70%),
        repeating-linear-gradient(90deg,
            rgba(0,0,0,0.30) 0 14px,
            rgba(255,255,255,0.20) 14px 18px,
            transparent 18px 32px),
        linear-gradient(180deg, #a87850 0%, #6a4022 50%, #2a1808 100%);
}
/* Surface card variant: image on top, single description below (no title, no tag) */
.product-card-surface .product-info {
    padding: 1.1rem 1.3rem 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
}
.product-card-surface .product-info::before {
    content: '';
    width: 4px;
    height: 14px;
    margin-top: 0.45rem;
    background: linear-gradient(180deg, var(--c-accent), var(--c-accent-3));
    border-radius: 2px;
    flex-shrink: 0;
}
.product-card-surface .product-desc {
    font-size: 0.88rem;
    line-height: 1.6;
    color: var(--c-text-2);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
    min-width: 0;
}

/* ========================================
   Main Category Header (Two main groups)
   ======================================== */

/* Tab row that contains the two main-category tabs */
.main-category-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    width: 100%;
    margin: 0 0 1.5rem;
    scroll-margin-top: calc(var(--header-h) + 16px);
    position: relative;
    z-index: 2;
}

.main-category-tab {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    width: 100%;
    margin: 0;
    padding: 1.35rem 1.75rem;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-4);
    box-shadow: var(--sh-1);
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.3s var(--ease);
    position: relative;
    overflow: hidden;
    z-index: 2;
    -webkit-tap-highlight-color: rgba(201, 168, 106, 0.2);
    touch-action: manipulation;
    pointer-events: auto;
}

.main-category-tab::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: transparent;
    transition: background 0.3s var(--ease);
}

.main-category-tab:hover {
    border-color: rgba(201, 168, 106, 0.4);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(10, 25, 41, 0.08);
}

.main-category-tab.active {
    border-color: var(--c-accent);
    background: linear-gradient(135deg, #fff 0%, #fbf9f3 100%);
    box-shadow: 0 8px 24px rgba(201, 168, 106, 0.2);
}

.main-category-tab.active::before {
    background: linear-gradient(180deg, var(--c-accent), var(--c-accent-3));
}

.main-category-tab[data-pane="surface"].active {
    border-color: #2d4263;
    background: linear-gradient(135deg, #fff 0%, #f0f5fa 100%);
    box-shadow: 0 8px 24px rgba(45, 66, 99, 0.18);
}

.main-category-tab[data-pane="surface"].active::before {
    background: linear-gradient(180deg, #2d4263, #1a2942);
}

.main-category-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
    color: var(--c-accent);
    border-radius: var(--r-3);
    box-shadow: 0 4px 12px rgba(10, 25, 41, 0.15);
    transition: all 0.3s var(--ease);
}

.main-category-tab.active .main-category-icon {
    box-shadow: 0 6px 16px rgba(201, 168, 106, 0.3);
}

.main-category-tab[data-pane="surface"].active .main-category-icon-alt {
    box-shadow: 0 6px 16px rgba(45, 66, 99, 0.3);
}

.main-category-icon-alt {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-3));
    color: #fff;
    box-shadow: 0 4px 12px rgba(201, 168, 106, 0.25);
}

.main-category-tab[data-pane="surface"] .main-category-icon-alt {
    background: linear-gradient(135deg, #2d4263, #1a2942);
    color: #fff;
    box-shadow: 0 4px 12px rgba(45, 66, 99, 0.25);
}

.main-category-text {
    flex: 1;
    min-width: 0;
}

.main-category-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 0.35rem;
    letter-spacing: 0.01em;
}

.main-category-sub {
    font-size: 0.88rem;
    color: var(--c-text-2);
    line-height: 1.5;
    margin: 0;
}

.main-category-count {
    flex-shrink: 0;
    font-family: var(--f-en);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--c-accent);
    letter-spacing: 0.15em;
    padding: 0.35rem 0.7rem;
    background: rgba(201, 168, 106, 0.1);
    border-radius: var(--r-2);
    text-transform: uppercase;
}

.main-category-tab[data-pane="surface"] .main-category-count {
    color: #2d4263;
    background: rgba(45, 66, 99, 0.1);
}

/* Pane show / hide controlled by [data-active-pane] on .products container.
   IMPORTANT: do NOT match the main-category-tab triggers themselves —
   the user needs to be able to click both tabs at any time. */
.products [data-pane]:not([data-pane-trigger]) {
    transition: opacity 0.3s var(--ease);
}

.products[data-active-pane="shape"] [data-pane="surface"]:not([data-pane-trigger]),
.products[data-active-pane="surface"] [data-pane="shape"]:not([data-pane-trigger]) {
    display: none !important;
}

/* OR Divider between the two main groups (kept for legacy / unused) */
.main-category-divider {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
    margin: 3.5rem 0 2.5rem;
    text-align: center;
}

.main-category-divider .divider-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-border), transparent);
}

.main-category-divider .divider-text {
    font-family: var(--f-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--c-accent);
    letter-spacing: 0.3em;
    padding: 0 0.5rem;
}

/* Surface treatment tab variant */
.product-tab-surface {
    background: linear-gradient(135deg, #fff, #fbf9f3);
    border-color: rgba(201, 168, 106, 0.15);
}

.product-tab-surface.active {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-3));
    border-color: var(--c-accent);
    box-shadow: 0 8px 20px rgba(201, 168, 106, 0.3);
}

.product-tab-surface.active .tab-num {
    color: #fff;
    opacity: 0.9;
}

.products-tabs-surface {
    margin-bottom: 2rem;
}

/* Surface Info Card (Compact: just title + English name) */
.products-grid:has(.surface-info-card) {
    grid-template-columns: 1fr;
    width: 100%;
    margin-left: 0;
    margin-right: 0;
}

.surface-info-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-4);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--sh-1);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1.25rem;
    position: relative;
    overflow: hidden;
}

.surface-info-card-compact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--c-accent), var(--c-accent-3));
}

.surface-info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--r-3);
    color: #fff;
    font-family: var(--f-en);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.surface-info-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--c-primary);
    margin: 0 0 0.15rem 0;
}

.surface-info-en {
    font-family: var(--f-en);
    font-size: 0.85rem;
    color: var(--c-text-3);
    margin: 0;
    letter-spacing: 0.02em;
}

.surface-info-card-multi {
    text-align: center;
    align-items: center;
    flex-direction: column;
}

/* ========================================
   Surface Treatment Drawer (Compact, Collapsible)
   ======================================== */
.surface-drawer {
    width: 100%;
    margin: 2.5rem 0 1.5rem;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-4);
    box-shadow: var(--sh-2);
    overflow: hidden;
    transition: all 0.3s var(--ease);
    position: relative;
}

.surface-drawer-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background:
        radial-gradient(circle at 95% 50%, rgba(255, 255, 255, 0.5) 0%, transparent 50%),
        linear-gradient(135deg, #f5d68a 0%, #e0a653 35%, #c08642 70%, #8b5a2b 100%);
    cursor: pointer;
    user-select: none;
    transition: background 0.3s var(--ease);
    gap: 1rem;
    border: none;
    text-align: left;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.surface-drawer-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.2) 0%, transparent 25%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.15) 0%, transparent 30%),
        radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 20%);
    pointer-events: none;
}

.surface-drawer-header::after {
    content: '';
    position: absolute;
    right: -30px;
    top: 50%;
    transform: translateY(-50%);
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background:
        conic-gradient(from 0deg,
            #c9a86a 0deg, #e6c8a0 30deg, #8b5a2b 60deg, #d4a574 90deg,
            #b07a3a 120deg, #f5d68a 150deg, #6b4515 180deg, #e0a653 210deg,
            #c08642 240deg, #f0c987 270deg, #8b5a2b 300deg, #c9a86a 330deg, #c9a86a 360deg);
    opacity: 0.25;
    filter: blur(2px);
    pointer-events: none;
    transition: transform 0.6s var(--ease);
}

.surface-drawer-header:hover::after {
    transform: translateY(-50%) rotate(45deg) scale(1.1);
    opacity: 0.35;
}

.surface-drawer-header:hover {
    background:
        radial-gradient(circle at 95% 50%, rgba(255, 255, 255, 0.6) 0%, transparent 50%),
        linear-gradient(135deg, #f8dd96 0%, #e6b25e 35%, #c89048 70%, #965f30 100%);
}

.surface-drawer-title-wrap {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    position: relative;
    z-index: 2;
}

.surface-drawer-tag {
    display: inline-block;
    font-family: var(--f-en);
    font-size: 0.7rem;
    font-weight: 800;
    color: #6b4515;
    letter-spacing: 0.22em;
    padding: 0.28rem 0.7rem;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 999px;
    align-self: flex-start;
    box-shadow: 0 2px 6px rgba(107, 69, 21, 0.2);
    backdrop-filter: blur(4px);
}

.surface-drawer-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: #fff;
    margin: 0;
    line-height: 1.3;
    text-shadow: 0 2px 8px rgba(107, 69, 21, 0.4);
    letter-spacing: 0.01em;
}

.surface-drawer-chevron {
    flex-shrink: 0;
    color: #fff;
    transition: transform 0.4s var(--ease);
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    padding: 4px;
    width: 32px;
    height: 32px;
    backdrop-filter: blur(4px);
}

.surface-drawer.expanded .surface-drawer-chevron {
    transform: rotate(180deg);
}

.surface-drawer-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
}

.surface-drawer.expanded .surface-drawer-body {
    max-height: 2400px;
    transition: max-height 0.6s var(--ease);
}

.surface-drawer-intro {
    padding: 1.5rem 1.5rem 0.5rem;
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--c-text-2);
    position: relative;
}

.surface-drawer-intro::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 14px;
    background: linear-gradient(180deg, var(--c-accent), var(--c-accent-3));
    border-radius: 2px;
    margin-right: 0.5rem;
    vertical-align: -2px;
}

.surface-drawer-list {
    list-style: none;
    padding: 0.75rem 1.5rem 1.5rem;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem 1.5rem;
}

.surface-drawer-list li {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.85rem 1rem;
    background: linear-gradient(135deg, #fdf9ee 0%, #fff 100%);
    border-radius: var(--r-2);
    border-left: 3px solid var(--c-accent);
    position: relative;
    transition: all 0.25s var(--ease);
}

.surface-drawer-list li::before {
    content: '';
    position: absolute;
    left: -3px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--c-accent), var(--c-accent-3));
    border-radius: 2px;
    transition: width 0.25s var(--ease);
}

.surface-drawer-list li:hover {
    background: linear-gradient(135deg, #f7eddb 0%, #fdf9ee 100%);
    transform: translateX(3px);
    box-shadow: 0 4px 12px rgba(201, 168, 106, 0.18);
}

.surface-drawer-list li:hover::before {
    width: 6px;
}

.surface-drawer-list li .zh {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--c-primary);
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.surface-drawer-list li .zh::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-3));
    box-shadow: 0 0 0 2px rgba(201, 168, 106, 0.2);
    flex-shrink: 0;
}

.surface-drawer-list li .en {
    font-family: var(--f-en);
    font-size: 0.78rem;
    color: var(--c-text-3);
    line-height: 1.4;
    letter-spacing: 0.01em;
    padding-left: 1.2rem;
}

/* When list item has only a single .en (no .zh), promote .en to title style */
.surface-drawer-list li > .en:only-child {
    font-family: var(--f-en);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--c-primary);
    line-height: 1.4;
    letter-spacing: 0.005em;
    padding-left: 1.55rem;
    position: relative;
    display: block;
}

.surface-drawer-list li > .en:only-child::before {
    content: '';
    position: absolute;
    left: 0.1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-3));
    box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.2);
    flex-shrink: 0;
}

/* Remove legacy :nth-last-child rule that hid borders */
.surface-drawer-list li:nth-last-child(-n+2) {
    border-bottom: none;
}

/* Alt style for second drawer (Wall Panel Series) */
.surface-drawer-alt {
    border-color: rgba(45, 66, 99, 0.15);
}

.surface-drawer-alt .surface-drawer-header {
    background:
        radial-gradient(circle at 95% 50%, rgba(255, 255, 255, 0.4) 0%, transparent 50%),
        linear-gradient(135deg, #5b7fb8 0%, #3a5a8f 35%, #1f3b6b 70%, #0f2240 100%);
}

.surface-drawer-alt .surface-drawer-header::after {
    background:
        conic-gradient(from 0deg,
            #2d4263 0deg, #4a6396 30deg, #0f2240 60deg, #5b7fb8 90deg,
            #1f3b6b 120deg, #3a5a8f 150deg, #2d4263 180deg, #4a6396 210deg,
            #0f2240 240deg, #5b7fb8 270deg, #1f3b6b 300deg, #2d4263 330deg, #2d4263 360deg);
    opacity: 0.3;
    right: -50px;
}

.surface-drawer-alt .surface-drawer-header:hover {
    background:
        radial-gradient(circle at 95% 50%, rgba(255, 255, 255, 0.5) 0%, transparent 50%),
        linear-gradient(135deg, #6789c0 0%, #426397 35%, #244275 70%, #142a4d 100%);
}

.surface-drawer-tag-alt {
    color: #1f3b6b !important;
    background: rgba(255, 255, 255, 0.9) !important;
    box-shadow: 0 2px 6px rgba(15, 34, 64, 0.25) !important;
}

.surface-drawer-alt .surface-drawer-title {
    text-shadow: 0 2px 8px rgba(15, 34, 64, 0.5);
}

.surface-drawer-alt .surface-drawer-chevron {
    color: #fff;
    background: rgba(255, 255, 255, 0.2);
}

.surface-drawer-alt .surface-drawer-intro::before {
    background: linear-gradient(180deg, #2d4263, #5b7fb8);
}

.surface-drawer-alt .surface-drawer-list li {
    background: linear-gradient(135deg, #f1f5fa 0%, #fff 100%);
    border-left-color: #2d4263;
}

.surface-drawer-alt .surface-drawer-list li::before {
    background: linear-gradient(180deg, #2d4263, #5b7fb8);
}

.surface-drawer-alt .surface-drawer-list li:hover {
    background: linear-gradient(135deg, #e1ebf5 0%, #f1f5fa 100%);
    box-shadow: 0 4px 12px rgba(45, 66, 99, 0.2);
}

.surface-drawer-alt .surface-drawer-list li .zh::before {
    background: linear-gradient(135deg, #2d4263, #5b7fb8);
    box-shadow: 0 0 0 2px rgba(45, 66, 99, 0.2);
}

/* ============================================================
   Bilingual Surface Treatment Drawer (中英对照)
   Distinct gold/blue gradient variant
   ============================================================ */
.surface-drawer-bilingual {
    background:
        linear-gradient(135deg, rgba(255, 247, 224, 0.6) 0%, rgba(255, 255, 255, 0.9) 50%, rgba(232, 244, 255, 0.6) 100%);
    border: 1px solid rgba(180, 140, 60, 0.35);
}
.surface-drawer-bilingual .surface-drawer-header {
    background: linear-gradient(135deg, #fffbe9 0%, #ffffff 50%, #eef5ff 100%);
}
.surface-drawer-bilingual .surface-drawer-header::after {
    background: linear-gradient(90deg, transparent, rgba(180, 140, 60, 0.4), transparent);
}
.surface-drawer-bilingual .surface-drawer-header:hover {
    background: linear-gradient(135deg, #fff5d6 0%, #f5faff 100%);
}
.surface-drawer-tag-bilingual {
    background: linear-gradient(135deg, #b48c3c 0%, #8a6628 100%);
    color: #fff;
    border: 1px solid rgba(180, 140, 60, 0.5);
}
.surface-drawer-bilingual .surface-drawer-title {
    color: #5a3a0c;
}
.surface-drawer-bilingual .surface-drawer-chevron {
    color: #b48c3c;
}
.surface-drawer-bilingual .surface-drawer-intro::before {
    background: linear-gradient(180deg, #b48c3c, #8a6628);
}

/* Bilingual list items: Chinese name + English name + English note */
.surface-drawer-list-bilingual {
    list-style: none;
    padding: 0.75rem 1.5rem 1.5rem;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem 1.5rem;
}
.surface-drawer-list-bilingual li {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    padding: 0.95rem 1.1rem;
    background: linear-gradient(135deg, #fffbe9 0%, #ffffff 100%);
    border-left: 3px solid #b48c3c;
    border-radius: 0 10px 10px 0;
    box-shadow: 0 2px 8px rgba(180, 140, 60, 0.08);
    font-size: 0.92rem;
    line-height: 1.45;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.surface-drawer-list-bilingual li:hover {
    transform: translateX(4px);
    background: linear-gradient(135deg, #fff5d6 0%, #f5faff 100%);
    box-shadow: 0 4px 14px rgba(180, 140, 60, 0.20);
}
.surface-drawer-list-bilingual li .cn {
    color: #5a3a0c;
    font-weight: 700;
    font-size: 0.98rem;
    letter-spacing: 0.01em;
}
.surface-drawer-list-bilingual li .en {
    color: #1a3a5e;
    font-weight: 600;
    font-size: 0.92rem;
}
.surface-drawer-list-bilingual li .en-note {
    color: #6c5a32;
    font-style: italic;
    font-weight: 400;
    font-size: 0.86rem;
    flex-basis: 100%;
    margin-top: 0.2rem;
    padding-top: 0.35rem;
    border-top: 1px dashed rgba(180, 140, 60, 0.30);
}
@media (max-width: 768px) {
    .surface-drawer-list-bilingual {
        grid-template-columns: 1fr;
    }
}

/* Make product-img render correctly when used as an <img> tag (not just a div background) */
.product-card-surface .product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.product-card:hover .product-img { transform: scale(1.06); }

/* Wall Panel List - with descriptions */
.wall-panel-list {
    list-style: none;
    padding: 0.75rem 1.5rem 1.5rem;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem 1.5rem;
}

.wall-panel-list li {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem 1.1rem;
    background: linear-gradient(135deg, #f1f5fa 0%, #fff 100%);
    border-radius: var(--r-2);
    border-left: 3px solid #2d4263;
    position: relative;
    transition: all 0.25s var(--ease);
}

.wall-panel-list li::before {
    content: '';
    position: absolute;
    left: -3px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #2d4263, #5b7fb8);
    border-radius: 2px;
    transition: width 0.25s var(--ease);
}

.wall-panel-list li:hover {
    background: linear-gradient(135deg, #e1ebf5 0%, #f1f5fa 100%);
    transform: translateX(3px);
    box-shadow: 0 4px 12px rgba(45, 66, 99, 0.2);
}

.wall-panel-list li:hover::before {
    width: 6px;
}

.wall-panel-list li .zh {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--c-primary);
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.wall-panel-list li .zh::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2d4263, #5b7fb8);
    box-shadow: 0 0 0 2px rgba(45, 66, 99, 0.2);
    flex-shrink: 0;
}

.wall-panel-list li .en {
    font-family: var(--f-en);
    font-size: 1rem;
    font-weight: 700;
    color: var(--c-primary);
    line-height: 1.35;
    letter-spacing: 0.005em;
    padding-left: 1.55rem;
    position: relative;
    display: block;
}

.wall-panel-list li .en::before {
    content: '';
    position: absolute;
    left: 0.1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2d4263, #5b7fb8);
    box-shadow: 0 0 0 3px rgba(45, 66, 99, 0.2);
    flex-shrink: 0;
}

.wall-panel-list li .desc {
    font-size: 0.82rem;
    line-height: 1.55;
    color: var(--c-text-2);
    margin-top: 0.35rem;
    padding-left: 1.55rem;
    padding-right: 0.3rem;
}

.wall-panel-list li:nth-last-child(-n+2) {
    border-bottom: none;
}

/* ========================================
   Responsive: Two Main Category Layout
   ======================================== */
@media (max-width: 768px) {
    .main-category-tabs {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .main-category-tab {
        padding: 1rem 1.25rem;
        gap: 1rem;
    }

    .main-category-title {
        font-size: 1.15rem;
    }

    .main-category-sub {
        font-size: 0.82rem;
    }

    .main-category-icon {
        width: 48px;
        height: 48px;
    }

    .main-category-icon svg {
        width: 22px;
        height: 22px;
    }

    .main-category-count {
        font-size: 0.65rem;
        padding: 0.3rem 0.55rem;
    }

    .main-category-divider {
        margin: 2.5rem auto 2rem;
    }

    .surface-drawer-header {
        padding: 1rem 1.25rem;
    }

    .surface-drawer-header::after {
        width: 160px;
        height: 160px;
        right: -50px;
    }

    .surface-drawer-title {
        font-size: 1.05rem;
    }

    .surface-drawer-tag {
        font-size: 0.65rem;
        padding: 0.22rem 0.55rem;
    }

    .surface-drawer-list {
        grid-template-columns: 1fr;
        padding: 0.5rem 1rem 1.25rem;
        gap: 0.5rem;
    }

    .surface-drawer-alt .surface-drawer-list {
        padding: 0.5rem 1rem 1.25rem;
    }

    .surface-drawer-list li {
        padding: 0.75rem 0.9rem;
    }

    .wall-panel-list {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: 0.5rem 1rem 1.25rem;
    }

    .wall-panel-list li {
        padding: 0.85rem 1rem;
    }

    .surface-info-card {
        padding: 1rem 1.25rem 1rem 1.5rem;
    }

    .surface-info-title {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .main-category-tab {
        margin: 0 auto 1.5rem;
        padding: 0.9rem 1rem;
    }

    .main-category-icon {
        width: 44px;
        height: 44px;
    }

    .main-category-icon svg {
        width: 20px;
        height: 20px;
    }

    .main-category-divider .divider-text {
        font-size: 0.95rem;
    }
}