/* ============================================================
   GEO SaaS 模板 — 经典商务 (Classic) 深度优化版
   优化：现代阴影、圆角、搜索框、案例卡片、移动端适配
   ============================================================ */

:root {
    --primary: #0284c7;
    --primary-dark: #0369a1;
    --primary-light: #e0f2fe;
    --primary-gradient: linear-gradient(135deg, #0284c7, #0d9488);
    --teal: #0d9488;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 6px rgba(0,0,0,0.04);
    --shadow: 0 8px 24px rgba(0,0,0,0.06);
    --shadow-md: 0 14px 40px rgba(0,0,0,0.08);
    --shadow-lg: 0 24px 60px rgba(0,0,0,0.10);
    --shadow-glow: 0 0 40px rgba(var(--primary-rgb), 0.15);
    --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --max: 1200px;
    --primary-rgb: 2, 132, 199;
}

html {
    scrollbar-width: none;
    -ms-overflow-style: none;
}
html::-webkit-scrollbar { width: 0; height: 0; }

body {
    background: var(--white);
    overflow-x: hidden;
}

/* ---------- Header ---------- */
.site-header {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(18px) saturate(1.2);
    -webkit-backdrop-filter: blur(18px) saturate(1.2);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    transition: var(--transition);
}
.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
    flex-shrink: 0;
}
.site-logo-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 800;
    box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.25);
    transition: var(--transition);
}
.site-logo:hover .site-logo-icon {
    transform: scale(1.05) rotate(-2deg);
    box-shadow: 0 6px 24px rgba(var(--primary-rgb), 0.35);
}
.site-logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.3px;
}
.site-nav {
    display: flex;
    gap: 0.1rem;
    align-items: center;
}
.site-nav a {
    padding: 0.5rem 1rem;
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.88rem;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    letter-spacing: 0.2px;
}
.site-nav a:hover,
.site-nav a.active {
    color: var(--primary);
    background: rgba(var(--primary-rgb), 0.06);
}
.site-nav a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 18px;
    height: 2.5px;
    background: var(--primary-gradient);
    border-radius: 2px;
    transition: transform 0.35s var(--bounce);
}
.site-nav a:hover::after,
.site-nav a.active::after {
    transform: translateX(-50%) scaleX(1);
}
.site-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--gray-700);
    padding: 0.3rem 0.6rem;
    border-radius: 8px;
    transition: var(--transition);
}
.site-menu-btn:hover { background: var(--gray-100); }

/* ---------- Hero Slider ---------- */
.hero-slider {
    position: relative;
    overflow: hidden;
    background: var(--gray-900);
}
.hero-slide {
    display: none;
    position: relative;
    animation: fadeInUp 0.7s ease;
}
.hero-slide:first-child { display: block; }
.hero-slide img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    display: block;
}
.hero-slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.45) 0%, transparent 65%);
    pointer-events: none;
}
.hero-caption {
    position: absolute;
    top: 90%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    color: white;
    max-width: 600px;
    text-align: center;
    width: 100%;
    padding: 0 1rem;
}
.hero-caption h2 {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 2px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    line-height: 2;
    background-color: rgba(var(--primary-rgb), 1);
    border-radius: 20px;
    display: inline-block;
    padding: 0rem 1.5rem;
    margin: 0 auto;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- 内页容器 ---------- */
.page-container { padding: 4rem 0; min-height: 60vh; }
.page-title { font-size: 2rem; font-weight: 800; color: var(--gray-900); text-align: center; margin-bottom: 2.5rem; }
.filter-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 2rem; justify-content: center; }
.filter-tags a {
    padding: 0.4rem 1.4rem; border-radius: 30px; font-size: 0.85rem; font-weight: 500;
    transition: var(--transition); border: 1.5px solid var(--gray-200); color: var(--gray-600); background: white;
}
.filter-tags a:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.filter-tags a.active {
    background: var(--primary-gradient); color: white; border-color: transparent;
    box-shadow: 0 4px 20px rgba(var(--primary-rgb), 0.25);
    transform: translateY(-2px);
}

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
.about-image img { width: 100%; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); transition: var(--transition); }
.about-image img:hover { transform: scale(1.01); }
.about-text p { color: var(--gray-600); line-height: 1.9; font-size: 1.05rem; }

/* ---------- Services / Products ---------- */
.services-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 1.5rem; }
.service-card {
    background: white; border-radius: var(--radius-lg); padding: 2.2rem 1.8rem; text-align: center;
    box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100);
    position: relative; overflow: hidden;
}
.service-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3.5px;
    background: var(--primary-gradient); transform: scaleX(0); transform-origin: left;
    transition: transform 0.5s var(--bounce);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover { transform: translateY(-12px) scale(1.02); box-shadow: var(--shadow-md); }
.service-card:hover .service-icon { transform: scale(1.12) rotate(-4deg); }
.service-icon {
    font-size: 2.8rem; margin-bottom: 0.8rem; transition: var(--transition); display: inline-block;
    color: var(--primary);
    background: var(--primary-light);
    padding: 0.5rem;
    border-radius: 50%;
    line-height: 1;
}
.service-card h3 { font-size: 1.1rem; color: var(--gray-900); margin-bottom: 0.4rem; }
.service-card p { color: var(--gray-500); font-size: 0.88rem; line-height: 1.6; }

/* ---------- Advantages ---------- */
.advantages-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1.5rem; }
.advantage-card {
    background: white; border-radius: var(--radius-lg); padding: 2rem 1.5rem; text-align: center;
    box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100);
}
.advantage-card:hover { transform: translateY(-10px) scale(1.02); box-shadow: var(--shadow-md); }
.advantage-card:hover .advantage-icon { animation: float 1.2s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.advantage-icon {
    font-size: 3rem; margin-bottom: 0.6rem; display: inline-block; transition: var(--transition);
    color: var(--primary);
    background: var(--primary-light);
    padding: 0.4rem;
    border-radius: 50%;
    line-height: 1;
}
.advantage-card h3 { font-size: 1.05rem; color: var(--gray-900); margin-bottom: 0.3rem; }
.advantage-card p { color: var(--gray-500); font-size: 0.85rem; line-height: 1.6; }

/* ---------- Stats ---------- */
.stats-section { background: var(--primary-gradient); color: white; padding: 4.5rem 0; position: relative; overflow: hidden; }
.stats-section .section-header h2 { color: white; text-shadow: 0 2px 12px rgba(0,0,0,0.1); }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 2rem; text-align: center; position: relative; z-index: 1; }
.stat-num { font-size: 3rem; font-weight: 800; letter-spacing: -1px; line-height: 1.1; }
.stat-label { font-size: 0.95rem; opacity: 0.85; margin-top: 0.3rem; }

/* ---------- News ---------- */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px,1fr)); gap: 1.2rem; }
.news-card { display: flex; gap: 1.2rem; background: white; border-radius: var(--radius); padding: 1.2rem 1.4rem; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100); align-items: center; }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px) scale(1.01); }
.news-date {
    background: rgba(var(--primary-rgb), 0.06);
    border-radius: 10px; padding: 0.5rem 0.6rem; min-width: 56px; text-align: center;
    font-size: 1.3rem; font-weight: 800; color: var(--primary); line-height: 1.2; flex-shrink: 0;
}
.news-date small { display: block; font-size: 0.6rem; color: var(--gray-400); font-weight: 400; }
.news-content h3 { font-size: 0.95rem; margin-bottom: 0.2rem; }
.news-content h3 a { color: var(--gray-900); transition: var(--transition); }
.news-content h3 a:hover { color: var(--primary); }
.news-content p { color: var(--gray-500); font-size: 0.82rem; line-height: 1.5; }

/* ---------- 案例卡片图片 ---------- */
.case-list-img,
.case-image {
    width: 120px;
    height: 90px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}
.news-card:hover .case-list-img,
.news-card:hover .case-image {
    transform: scale(1.05);
}

/* ---------- 站内搜索框（首页和列表页） ---------- */
.search-form-inline {
    display: flex;
    gap: 0.75rem;
    max-width: 560px;
    margin: 2rem auto 2.5rem;
    background: white;
    padding: 0.5rem;
    border-radius: 50px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    border: 1px solid var(--gray-200);
}
.search-input {
    flex: 1;
    padding: 0.75rem 1.25rem;
    border: none;
    outline: none;
    font-size: 0.95rem;
    background: transparent;
    color: var(--gray-800);
}
.search-input::placeholder {
    color: var(--gray-400);
}
.search-form-inline .btn {
    padding: 0.75rem 1.8rem;
    border-radius: 30px;
    background: var(--primary-gradient);
    color: white;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.3);
}
.search-form-inline .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.4);
}

/* ---------- FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.faq-item { background: white; border-radius: var(--radius); padding: 1.4rem 1.6rem; border-left: 4px solid var(--primary); box-shadow: var(--shadow-sm); transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px) scale(1.01); }
.faq-item h4 { font-size: 0.95rem; color: var(--gray-800); margin-bottom: 0.3rem; }
.faq-item h4::before { content: "Q "; color: var(--primary); font-weight: 800; }
.faq-item p { color: var(--gray-500); font-size: 0.85rem; padding-left: 1.4rem; line-height: 1.6; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.contact-card { background: white; border-radius: var(--radius-lg); padding: 2.2rem 1.8rem; text-align: center; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100); }
.contact-card:hover { box-shadow: var(--shadow-md); transform: translateY(-8px) scale(1.02); }
.contact-icon { font-size: 2.4rem; margin-bottom: 0.6rem; display: inline-block; transition: var(--transition); color: var(--primary); }
.contact-card:hover .contact-icon { transform: scale(1.1) rotate(-4deg); }
.contact-card h4 { font-size: 1rem; color: var(--gray-800); margin-bottom: 0.3rem; }
.contact-card p { color: var(--gray-500); font-size: 0.9rem; }

/* ---------- Team ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1.8rem; }
.team-card { background: white; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); text-align: center; border: 1px solid var(--gray-100); }
.team-card:hover { transform: translateY(-8px) scale(1.02); box-shadow: var(--shadow-md); }
.team-avatar { width: 100%; height: 260px; object-fit: cover; transition: var(--transition); }
.team-card:hover .team-avatar { transform: scale(1.04); }
.team-info { padding: 1.4rem 1.2rem; }
.team-info h4 { font-size: 1.05rem; color: var(--gray-900); }
.team-info p { color: var(--gray-500); font-size: 0.85rem; margin-top: 0.2rem; }

/* ---------- Gallery ---------- */
.gallery-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 0.8rem; }
.gallery-item { border-radius: var(--radius); overflow: hidden; cursor: pointer; transition: var(--transition); aspect-ratio: 4/3; position: relative; box-shadow: var(--shadow-sm); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--bounce); }
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item::after { content: '🔍'; position: absolute; inset: 0; background: rgba(0,0,0,0.35); color: white; display: flex; align-items: center; justify-content: center; font-size: 2.2rem; opacity: 0; transition: opacity 0.4s; backdrop-filter: blur(2px); }
.gallery-item:hover::after { opacity: 1; }

/* ---------- Video ---------- */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 1.2rem; }
.video-card { background: white; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100); }
.video-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px) scale(1.01); }
.video-thumb { height: 180px; display: flex; align-items: center; justify-content: center; background: var(--gray-200); font-size: 3rem; position: relative; }
.video-info { padding: 1.2rem 1.4rem; }
.video-info h3 { font-size: 1rem; color: var(--gray-900); margin-bottom: 0.3rem; }
.video-info p { color: var(--gray-500); font-size: 0.85rem; }

/* ---------- 文章详情 ---------- */
.breadcrumb { padding: 1rem 0; color: var(--gray-500); font-size: 0.85rem; background: var(--gray-50); border-bottom: 1px solid var(--gray-200); }
.breadcrumb a { color: var(--primary); }
.article-main { background: white; border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow); max-width: 1200px; margin: 2rem auto; }
.article-main h1 { font-size: 1.8rem; color: var(--gray-900); display: block; width: 100%; text-align: center; }
.article-meta { color: var(--gray-400); font-size: 0.85rem; padding: 0.8rem 0 1.2rem; border-bottom: 1px solid var(--gray-200); margin-bottom: 1.5rem; text-align: center; }
.article-body { font-size: 1rem; color: var(--gray-700); line-height: 1.9; }
.article-body h2 { font-size: 1.3rem; margin: 1.8rem 0 0.8rem; }
.article-body p { margin: 0.8rem 0; }

/* ---------- 分页 ---------- */
.pagination-container { display: flex; justify-content: center; margin: 2rem 0; }
.pagination { display: flex; gap: 0.3rem; list-style: none; }
.pagination li a, .pagination li span { padding: 0.45rem 0.8rem; border: 1px solid var(--gray-300); border-radius: 6px; text-decoration: none; color: var(--gray-700); font-size: 0.85rem; transition: var(--transition); }
.pagination li a:hover { background: var(--primary); color: white; border-color: var(--primary); }
.pagination li.active span { background: var(--primary); color: white; border-color: var(--primary); }

/* ---------- Footer ---------- */
.site-footer { background: var(--gray-900); color: var(--gray-400); padding: 3.5rem 0 0; border-top: 1px solid rgba(255,255,255,0.04); }
.footer-grid { display: grid; grid-template-columns: 2fr 1.2fr 1.5fr 1.2fr; gap: 2.5rem; margin-bottom: 2.5rem; }
.site-footer h4 { color: white; font-size: 1rem; font-weight: 700; margin-bottom: 1rem; position: relative; }
.site-footer h4::after { content: ''; display: block; width: 28px; height: 2.5px; background: var(--primary-gradient); margin-top: 0.4rem; border-radius: 2px; }
.footer-brand .footer-desc { color: var(--gray-400); font-size: 0.9rem; line-height: 1.7; margin-bottom: 1.2rem; max-width: 280px; }
.footer-social { display: flex; gap: 0.6rem; }
.footer-social a { display: flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.06); color: var(--gray-400); font-size: 1.2rem; transition: var(--transition); text-decoration: none; text-align: center; }
.footer-social a:hover {
    background: var(--primary); color: white; transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.25);
}
.site-footer a { color: var(--gray-400); display: block; padding: 0.3rem 0; font-size: 1rem; transition: var(--transition); }
.site-footer a:hover { color: white; transform: translateX(2px); }
.footer-contact-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.88rem; color: var(--gray-400); padding: 0.25rem 0; }
.footer-contact-icon { font-size: 1rem; flex-shrink: 0; width: 20px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 1.4rem 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem 1rem; font-size: 0.85rem; }
.footer-bottom-left { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.footer-bottom-left p { color: var(--gray-400); }
.footer-icp { color: var(--gray-500); font-size: 0.8rem; }
.footer-bottom-right { display: flex; align-items: center; gap: 0.6rem; }
.footer-bottom-right a { color: var(--gray-400); font-size: 0.82rem; transition: var(--transition); padding: 0; }
.footer-bottom-right a:hover { color: white; transform: translateX(2px); }
.footer-divider { color: var(--gray-600); }

/* ---------- Mobile Bottom Nav ---------- */
.mobile-bottom-nav { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: rgba(255,255,255,0.96); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--gray-200); z-index: 99; padding: 0.4rem 0.5rem; justify-content: space-around; box-shadow: 0 -4px 20px rgba(0,0,0,0.04); }
.mobile-bottom-nav a { color: var(--gray-600); text-decoration: none; font-size: 0.7rem; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 0.3rem 0.4rem; border-radius: 8px; transition: var(--transition); min-width: 50px; }
.mobile-bottom-nav a:hover {
    color: var(--primary);
    background: rgba(var(--primary-rgb), 0.06);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
    .advantages-grid { grid-template-columns: repeat(2,1fr); }
    .stats-grid { grid-template-columns: repeat(2,1fr); }
    .faq-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: repeat(2,1fr); }
    .gallery-grid { grid-template-columns: repeat(3,1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .footer-brand .footer-desc { max-width: 100%; }
    .hero-caption h2 { font-size: 1.8rem; }
    .page-container { padding: 3rem 0; }
    .case-list-img,
    .case-image { width: 100px; height: 75px; }
}
@media (max-width:768px) {
    .container { padding: 0 1rem; }
    .site-header .container { height: 60px; }
    .site-logo-icon { width: 36px; height: 36px; font-size: 1rem; }
    .site-logo-text { font-size: 1rem; }
    .site-nav { display: none; position: fixed; top: 60px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 0.8rem; box-shadow: 0 20px 40px rgba(0,0,0,0.08); z-index: 99; border-radius: 0 0 18px 18px; gap: 0.1rem; }
    .site-nav.open { display: flex; }
    .site-nav a { padding: 0.7rem 1rem; border-radius: 8px; border-bottom: 1px solid var(--gray-100); font-size: 0.95rem; }
    .site-nav a::after { display: none; }
    .site-menu-btn { display: block; }
    .hero-slide img { max-height: 220px; }
    .hero-caption { bottom: 16px; left: 16px; }
    .hero-caption h2 { font-size: 1.2rem; }
    .section { padding: 3rem 0; }
    .section-header h2 { font-size: 1.5rem; }
    .section-header { margin-bottom: 2rem; }
    .services-grid { grid-template-columns: 1fr 1fr; gap: 0.7rem; }
    .advantages-grid { grid-template-columns: 1fr 1fr; gap: 0.7rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 1.2rem; }
    .stat-num { font-size: 2.2rem; }
    .team-grid { grid-template-columns: 1fr 1fr; }
    .gallery-grid { grid-template-columns: 1fr 1fr; }
    .team-avatar { height: 180px; }
    .filter-tags a { padding: 0.3rem 1rem; font-size: 0.78rem; }
    .contact-grid { grid-template-columns: repeat(3,1fr); gap: 0.6rem; }
    .contact-card { padding: 0.8rem 0.4rem; border-radius: var(--radius); }
    .contact-icon { font-size: 1.6rem; margin-bottom: 0.2rem; }
    .contact-card h4 { font-size: 0.7rem; margin-bottom: 0.1rem; }
    .contact-card p { font-size: 0.65rem; line-height: 1.3; word-break: break-word; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 0.3rem; }
    .footer-bottom-left { justify-content: center; flex-direction: column; gap: 0.3rem; }
    .footer-bottom-right { justify-content: center; }
    .mobile-bottom-nav { display: flex; }
    body { padding-bottom: 68px; }
    .news-grid { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; }
    .back-to-top { bottom: 80px; right: 16px; width: 40px; height: 40px; font-size: 1.1rem; }
    .page-container { padding: 2.5rem 0; }
    .page-title { font-size: 1.6rem; margin-bottom: 1.8rem; }
    .article-main { padding: 1.5rem; }
    .case-list-img,
    .case-image {
        width: 100%;
        height: 180px;
        margin-bottom: 1rem;
    }
    .news-card {
        flex-direction: column;
        align-items: stretch;
    }
    .news-date {
        align-self: flex-start;
    }
    .search-form-inline {
        flex-direction: column;
        padding: 0.4rem;
        border-radius: 20px;
    }
    .search-input {
        width: 100%;
        padding: 0.7rem 1rem;
    }
    .search-form-inline .btn {
        width: 100%;
        padding: 0.7rem;
    }
}
@media (max-width:400px) {
    .services-grid, .advantages-grid, .team-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .hero-caption h2 { font-size: 1rem; }
    .service-card { padding: 1.5rem 1rem; }
    .contact-grid { grid-template-columns: repeat(3,1fr); gap: 0.4rem; }
    .contact-card { padding: 0.5rem 0.2rem; }
    .contact-icon { font-size: 1.2rem; }
    .contact-card h4 { font-size: 0.6rem; }
    .contact-card p { font-size: 0.55rem; }
    .page-title { font-size: 1.3rem; }
    .case-list-img,
    .case-image { height: 140px; }
}

/* 深色导航覆盖 */
body.nav-dark .site-header {
    background: var(--gray-900);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
body.nav-dark .site-logo-text { color: white; }
body.nav-dark .site-nav a { color: var(--gray-400); }
body.nav-dark .site-nav a:hover,
body.nav-dark .site-nav a.active {
    color: white;
    background: rgba(255,255,255,0.1);
}
body.nav-dark .site-nav a::after { background: var(--primary); }
body.nav-dark .site-menu-btn { color: var(--gray-300); }
body.nav-dark .site-menu-btn:hover { background: rgba(255,255,255,0.15); }

@media (max-width: 768px) {
    body.nav-dark .site-nav {
        background: var(--gray-900);
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    body.nav-dark .site-nav a {
        border-bottom-color: rgba(255,255,255,0.08);
    }
}