/* 图灵宇宙 · 企业官网（留白 · 层次 · 高级感） */
:root {
    --primary:        #1e4d8c;
    --primary-dark:   #163a6b;
    --primary-light:  #eef4fb;
    --primary-soft:   rgba(30, 77, 140, 0.08);
    --text:           #111827;
    --text-secondary: #4b5563;
    --text-muted:     #9ca3af;
    --border:         rgba(17, 24, 39, 0.08);
    --border-strong:  rgba(17, 24, 39, 0.12);
    --bg:             #ffffff;
    --bg-soft:        #f9fafb;
    --bg-muted:       #f3f4f6;
    --bg-dark:        #1a2332;
    --header-h:       76px;
    --container:      1180px;
    --content-width:  1000px;
    --radius-sm:      10px;
    --radius:         16px;
    --radius-lg:      24px;
    --shadow-xs:      0 1px 2px rgba(17, 24, 39, 0.04);
    --shadow-sm:      0 4px 24px rgba(17, 24, 39, 0.06);
    --shadow-md:      0 12px 40px rgba(17, 24, 39, 0.08);
    --shadow-lg:      0 24px 60px rgba(17, 24, 39, 0.1);
    --ease:           cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --section-y:      clamp(80px, 10vw, 120px);
    --font:           "PingFang SC", "SF Pro Text", "Microsoft YaHei", -apple-system, sans-serif;
}

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

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

body.site-body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.75;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 40px);
}

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

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.35s var(--ease);
    white-space: nowrap;
}

.btn-sm { padding: 9px 22px; font-size: 13px; }
.btn-lg { padding: 15px 34px; font-size: 15px; }
.btn-block { width: 100%; }

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(30, 77, 140, 0.25);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(30, 77, 140, 0.3);
}

.btn-outline {
    border-color: var(--border-strong);
    color: var(--primary);
    background: transparent;
}
.btn-outline:hover {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.btn-white {
    background: #fff;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}
.btn-white:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline-white,
.btn-ghost-white {
    border-color: rgba(255, 255, 255, 0.45);
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(4px);
}
.btn-outline-white:hover,
.btn-ghost-white:hover {
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.7);
}

/* ---- 导航 ---- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s var(--ease);
}

.site-header.is-scrolled { box-shadow: var(--shadow-xs); }

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
    gap: 32px;
}

.site-brand {
    flex-shrink: 0;
    transition: color 0.25s var(--ease);
}

.site-brand:hover { color: var(--primary); }

.site-brand-name {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text);
    line-height: 1.2;
}

.site-brand:hover .site-brand-name { color: var(--primary); }

.site-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: 999px;
    transition: all 0.25s var(--ease);
}

.nav-link:hover { color: var(--primary); background: var(--primary-soft); }
.nav-link.active { color: var(--primary); background: var(--primary-light); }

.site-header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.site-phone {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
}
.site-phone:hover { color: var(--primary); }

.site-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.site-nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text);
    border-radius: 1px;
    transition: all 0.3s;
}

/* ---- Hero ---- */
.hero {
    position: relative;
    min-height: clamp(480px, 72vh, 640px);
    overflow: hidden;
    background: var(--bg-dark);
}

.hero-slider { height: 100%; min-height: inherit; position: relative; }

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s var(--ease);
}

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

.hero-slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.04);
    transition: transform 8s linear;
}

.hero-slide.active .hero-slide-bg { transform: scale(1); }

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(105deg, rgba(17, 24, 39, 0.78) 0%, rgba(17, 24, 39, 0.45) 55%, rgba(30, 77, 140, 0.2) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    min-height: inherit;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 680px;
    color: #fff;
    padding: calc(var(--header-h) + 40px) clamp(20px, 5vw, 40px) 80px;
}

.hero-eyebrow {
    font-size: 13px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 20px;
    max-width: 480px;
    line-height: 1.6;
}

.hero-title {
    font-size: clamp(32px, 4.5vw, 52px);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 18px);
    color: rgba(255, 255, 255, 0.82);
    margin-bottom: 36px;
    line-height: 1.85;
    max-width: 520px;
    font-weight: 400;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-dots {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.hero-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    padding: 0;
    transition: all 0.35s var(--ease);
}

.hero-dot.active {
    background: #fff;
    width: 28px;
    border-radius: 999px;
}

/* ---- 内页 Banner ---- */
.page-banner {
    padding: calc(var(--header-h) + 32px) 0 56px;
    background: linear-gradient(180deg, var(--bg-soft) 0%, var(--bg) 100%);
}

.page-banner-inner { max-width: var(--content-width); }

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.breadcrumb a { transition: color 0.2s; }
.breadcrumb a:hover { color: var(--primary); }

.breadcrumb-sep {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-muted);
    opacity: 0.5;
}

.breadcrumb-current { color: var(--text-secondary); }

.page-banner-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 12px;
}

.page-banner-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.75;
    max-width: 560px;
}

/* ---- 区块通用 ---- */
.section { padding: var(--section-y) 0; }
.section-white { background: var(--bg); }
.section-soft { background: var(--bg-soft); }

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-label::before {
    content: "";
    width: 20px;
    height: 1px;
    background: var(--primary);
    opacity: 0.5;
}

.section-head-center .section-label::before { display: none; }
.section-head-center .section-label { justify-content: center; }

.section-title {
    font-size: clamp(26px, 3.2vw, 36px);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--text);
}

.section-title-left { max-width: 520px; }

.section-head { margin-bottom: clamp(40px, 5vw, 56px); }

.section-head-center { text-align: center; }
.section-head-center .section-title { max-width: 640px; margin: 0 auto; }

.section-head-split {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.link-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--primary);
    font-weight: 500;
    padding-bottom: 4px;
    border-bottom: 1px solid transparent;
    transition: all 0.25s var(--ease);
    flex-shrink: 0;
}

.link-more span { transition: transform 0.25s var(--ease); }
.link-more:hover { border-bottom-color: var(--primary); }
.link-more:hover span { transform: translateX(4px); }

/* ---- 滚动入场 ---- */
.fade-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---- 简介区 ---- */
.intro-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(48px, 8vw, 96px);
    align-items: center;
}

.rich-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 32px;
}

.intro-copy .rich-text { max-width: 520px; }

.content-page .rich-text,
.detail-layout .rich-text {
    max-width: none;
    font-size: 17px;
}

.rich-text p { margin-bottom: 16px; }
.rich-text h2, .rich-text h3 {
    color: var(--text);
    margin: 28px 0 12px;
    font-size: 18px;
    font-weight: 600;
}

.intro-photo-wrap {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.intro-photo {
    width: 100%;
    aspect-ratio: 4 / 3.2;
    object-fit: cover;
}

.stats-float {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-top: 20px;
}

.stat-pill {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 22px 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.stat-pill:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-pill strong {
    display: block;
    font-size: 26px;
    font-weight: 600;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.stat-pill span {
    font-size: 13px;
    color: var(--text-muted);
}

/* ---- 优势 ---- */
.feature-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(20px, 3vw, 32px);
}

.feature-item {
    padding: 32px 28px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.35s var(--ease);
}

.feature-item:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-dot {
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    margin-bottom: 20px;
    opacity: 0.7;
}

.feature-item h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.feature-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ---- 产品展示（不对称网格） ---- */
.product-showcase {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
}

.product-card {
    grid-column: span 4;
    background: var(--bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all 0.4s var(--ease);
}

.product-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

.product-card-featured {
    grid-column: span 8;
    flex-direction: row;
}

.product-card-featured .product-card-img {
    width: 55%;
    aspect-ratio: auto;
    min-height: 280px;
}

.product-card-featured .product-card-body {
    width: 45%;
    padding: 40px 36px;
    justify-content: center;
}

.product-card-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-muted);
}

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

.product-card:hover .product-card-img img { transform: scale(1.04); }

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

.product-card-body h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.45;
    letter-spacing: -0.01em;
}

.product-card-featured .product-card-body h3 { font-size: 22px; }

.product-card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-arrow {
    margin-top: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    opacity: 0;
    transform: translateY(6px);
    transition: all 0.3s var(--ease);
}

.product-card:hover .card-arrow {
    opacity: 1;
    transform: translateY(0);
}

/* 列表页复用卡片网格 */
.card-grid { display: grid; gap: 24px; }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }

.card-item {
    background: var(--bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all 0.35s var(--ease);
}

.card-item:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.card-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-muted);
}

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

.card-item:hover .card-img img { transform: scale(1.04); }

.card-body { padding: 26px 28px 30px; flex: 1; }

.card-body h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.45;
}

.card-sub {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 8px;
    font-weight: 500;
}

.card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---- 合作伙伴 ---- */
.partner-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.partner-chip {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
    padding: 18px 28px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: all 0.3s var(--ease);
}

.partner-chip:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--border-strong);
}

.partner-chip img {
    max-height: 32px;
    object-fit: contain;
    opacity: 0.65;
    transition: opacity 0.25s;
}

.partner-chip:hover img { opacity: 1; }

.partner-chip span {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ---- 新闻卡片 ---- */
.news-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-card {
    background: var(--bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all 0.35s var(--ease);
}

.news-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.news-card-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-muted);
}

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

.news-card:hover .news-card-img img { transform: scale(1.04); }

.news-card-body { padding: 26px 28px 30px; flex: 1; }

.news-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.news-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 10px;
    border-radius: 999px;
}

.news-card-meta time {
    font-size: 12px;
    color: var(--text-muted);
}

.news-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

.news-card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---- CTA ---- */
.section-cta-wrap {
    padding-bottom: var(--section-y);
    background: var(--bg-soft);
}

.cta-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
    padding: clamp(40px, 6vw, 64px) clamp(32px, 5vw, 72px);
    background: var(--primary);
    border-radius: var(--radius-lg);
    color: #fff;
    box-shadow: var(--shadow-lg);
}

.cta-panel-text h2 {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}

.cta-panel-text p {
    font-size: 16px;
    opacity: 0.88;
    line-height: 1.75;
    max-width: 480px;
}

.cta-panel-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

/* ---- 筛选 / 列表页 ---- */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 48px;
}

.filter-item {
    padding: 10px 22px;
    border-radius: 999px;
    font-size: 14px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    background: var(--bg);
    transition: all 0.25s var(--ease);
}

.filter-item:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-item.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(30, 77, 140, 0.2);
}

.list-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
}

.list-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 28px;
    background: var(--bg-soft);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.list-sidebar h3 {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.sidebar-nav li { margin-bottom: 4px; }

.sidebar-nav a {
    display: block;
    padding: 11px 14px;
    font-size: 14px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all 0.2s var(--ease);
}

.sidebar-nav a:hover { background: var(--bg); color: var(--primary); }
.sidebar-nav a.active {
    background: var(--bg);
    color: var(--primary);
    font-weight: 500;
    box-shadow: var(--shadow-xs);
}

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

.article-row {
    display: flex;
    gap: 28px;
    padding: 28px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.35s var(--ease);
}

.article-row:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.article-row-img {
    width: 240px;
    flex-shrink: 0;
    aspect-ratio: 16 / 10;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-muted);
}

.article-row-img img { width: 100%; height: 100%; object-fit: cover; }

.article-row-body h3 {
    font-size: 19px;
    font-weight: 600;
    margin: 8px 0 10px;
    letter-spacing: -0.01em;
}

.article-row-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-row-body time {
    font-size: 13px;
    color: var(--text-muted);
}

/* ---- 内容页 ---- */
.content-page {
    max-width: var(--content-width);
    margin: 0 auto;
}

.content-cover {
    width: 100%;
    border-radius: var(--radius-lg);
    margin-bottom: 40px;
    box-shadow: var(--shadow-md);
}

.timeline {
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.timeline h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 28px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 24px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.timeline-year {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
}

.timeline-event {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.75;
}

.stats-row-wide {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 48px;
}

/* ---- 联系页 ---- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr minmax(320px, 400px);
    gap: clamp(40px, 6vw, 80px);
    align-items: start;
}

.contact-list { margin-top: 36px; }

.contact-list li {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
}

.contact-list label {
    color: var(--text-muted);
    font-size: 13px;
    padding-top: 2px;
}

.contact-qrcode {
    text-align: center;
    padding: 32px;
    background: var(--bg-soft);
    border-radius: var(--radius);
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.contact-qrcode img { width: 150px; margin: 0 auto 14px; }
.contact-qrcode p { font-size: 13px; color: var(--text-muted); }

.contact-form-box {
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
    padding: 36px;
    border: 1px solid var(--border);
}

.contact-form-box h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-msg {
    margin-bottom: 16px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    line-height: 1.6;
}

.form-msg.is-success {
    color: #166534;
    background: #ecfdf3;
    border: 1px solid #bbf7d0;
}

.form-msg.is-error {
    color: #b91c1c;
    background: #fef2f2;
    border: 1px solid #fecaca;
}

.form-tip {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.6;
}

.form-row { margin-bottom: 16px; }

.form-row input,
.form-row textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: var(--bg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-row input:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

/* ---- 详情页 ---- */
.detail-layout {
    max-width: var(--content-width);
    margin: 0 auto;
}

.detail-cover {
    margin-bottom: 36px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.detail-cover img { width: 100%; }

.detail-summary {
    background: var(--bg-soft);
    border-radius: var(--radius);
    padding: 28px 32px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    border: 1px solid var(--border);
}

.detail-summary p {
    font-size: 16px;
    color: var(--text-secondary);
    flex: 1;
    margin: 0;
    line-height: 1.75;
}

.detail-content { margin-top: 8px; }

.page-banner-desc time {
    margin-left: 12px;
    font-size: 14px;
    color: var(--text-muted);
}

/* ---- 分页 ---- */
.pagination-wrap { margin-top: 56px; text-align: center; }
.pagination-wrap ul { display: inline-flex; gap: 8px; }

.pagination-wrap li a,
.pagination-wrap li span {
    display: block;
    min-width: 40px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.pagination-wrap li a:hover { border-color: var(--primary); color: var(--primary); }

.pagination-wrap li.active span {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.empty-tip {
    text-align: center;
    padding: 80px 0;
    color: var(--text-muted);
    font-size: 15px;
}

/* ---- 页脚 ---- */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.65);
    padding: 72px 0 0;
    margin-top: 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
    gap: clamp(32px, 5vw, 56px);
    padding-bottom: 48px;
}

.footer-slogan {
    font-size: 15px;
    font-weight: 500;
    color: #fff;
    margin-bottom: 10px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    max-width: 280px;
}

.footer-col h4 {
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.footer-col li { margin-bottom: 12px; }
.footer-col a { font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-contact li { font-size: 14px; line-height: 1.7; }

.footer-bottom {
    padding: 28px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
    font-size: 13px;
}

.footer-bottom p { margin: 4px 0; }
.footer-bottom a { color: rgba(255, 255, 255, 0.45); transition: color 0.2s; }
.footer-bottom a:hover { color: #fff; }
.footer-divider { margin: 0 10px; opacity: 0.35; }

/* ---- 响应式 ---- */
@media (max-width: 1100px) {
    .feature-row { grid-template-columns: repeat(2, 1fr); }
    .product-card-featured { grid-column: span 12; flex-direction: column; }
    .product-card-featured .product-card-img,
    .product-card-featured .product-card-body { width: 100%; }
    .product-card { grid-column: span 6; }
    .news-cards { grid-template-columns: repeat(2, 1fr); }
    .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .stats-row-wide { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .site-nav {
        position: fixed;
        top: var(--header-h);
        left: 16px;
        right: 16px;
        background: #fff;
        flex-direction: column;
        padding: 12px;
        gap: 4px;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s var(--ease);
    }

    .site-nav.open {
        transform: translateY(8px);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }

    .site-nav-toggle { display: flex; }
    .site-phone { display: none; }

    .intro-layout,
    .list-layout,
    .contact-layout { grid-template-columns: 1fr; gap: 40px; }

    .list-sidebar { position: static; }

    .feature-row,
    .news-cards,
    .card-grid-3 { grid-template-columns: 1fr; }

    .product-card { grid-column: span 12; }

    .article-row { flex-direction: column; padding: 20px; }
    .article-row-img { width: 100%; }

    .cta-panel { flex-direction: column; align-items: flex-start; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }

    .stats-float { grid-template-columns: 1fr 1fr; }

    .hero {
        min-height: clamp(400px, 62vh, 520px);
    }

    .hero-content {
        max-width: 100%;
        padding: calc(var(--header-h) + 28px) 24px 56px;
    }

    .hero-eyebrow {
        font-size: 12px;
        margin-bottom: 14px;
    }

    .hero-title {
        font-size: clamp(26px, 7.5vw, 34px);
        margin-bottom: 14px;
    }

    .hero-subtitle {
        font-size: 15px;
        margin-bottom: 28px;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .site-header-actions .btn { display: none; }
    .stats-float,
    .stats-row-wide { grid-template-columns: 1fr; }
    .hero-content { padding-left: 20px; padding-right: 20px; }
    .hero-actions { flex-direction: column; width: 100%; }
    .hero-actions .btn { width: 100%; }
}