/* ============================================
   慧新科技 - 专业工厂风格 (参考 filmbase.cn)
   ============================================ */

/* === 变量 === */
:root {
    --primary: #c8a45c;
    --primary-dark: #b08d3e;
    --primary-light: #f5edd8;
    --dark: #1a1a1a;
    --dark-2: #222222;
    --dark-3: #333333;
    --gray-1: #555555;
    --gray-2: #888888;
    --gray-3: #aaaaaa;
    --gray-4: #cccccc;
    --gray-5: #e5e5e5;
    --gray-6: #f0f0f0;
    --gray-7: #f7f7f7;
    --white: #ffffff;
    --danger: #e74c3c;
    --success: #27ae60;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --radius: 4px;
    --radius-lg: 8px;
    --transition: all 0.3s ease;
    --font: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1280px;
}

/* === 重置 === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 14px; line-height: 1.6; color: var(--dark); background: var(--white); }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* === 按钮 === */
.btn { display: inline-block; padding: 10px 28px; border-radius: var(--radius); font-size: 14px; font-weight: 600; cursor: pointer; transition: var(--transition); border: 1px solid transparent; text-align: center; letter-spacing: 0.5px; }
.btn-primary { background: var(--primary); color: var(--white); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-secondary { background: transparent; color: var(--dark); border-color: var(--dark); }
.btn-secondary:hover { background: var(--dark); color: var(--white); }
.btn-outline-light { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline-light:hover { background: var(--white); color: var(--dark); }
.btn-danger { background: var(--danger); color: var(--white); border-color: var(--danger); }
.btn-lg { padding: 14px 36px; font-size: 15px; }
.btn-sm { padding: 5px 14px; font-size: 12px; }
.btn-block { width: 100%; }

/* === 顶部信息栏 === */
.top-bar { background: #111; color: var(--gray-3); font-size: 12px; padding: 8px 0; letter-spacing: 0.5px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; }
.top-bar-left span { margin-right: 16px; }
.top-bar .divider { opacity: 0.3; margin: 0 4px; }
.top-bar-right { color: var(--primary); font-weight: 500; letter-spacing: 1px; }

/* === 导航栏 === */
.navbar { position: sticky; top: 0; z-index: 1000; background: var(--dark-2); transition: var(--transition); border-bottom: 1px solid rgba(255,255,255,0.05); }
.navbar.scrolled { box-shadow: 0 2px 12px rgba(0,0,0,0.3); }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-logo { display: flex; align-items: center; text-decoration: none; }
.logo-text { font-size: 22px; font-weight: 700; color: var(--white); letter-spacing: 3px; }
.nav-menu { display: flex; gap: 0; }
.nav-link { padding: 24px 20px; font-size: 14px; font-weight: 400; color: rgba(255,255,255,0.75); letter-spacing: 1px; position: relative; transition: var(--transition); }
.nav-link::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background: var(--primary); transition: width 0.3s; }
.nav-link:hover, .nav-link.active { color: var(--white); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link.admin-link { color: var(--primary); font-weight: 500; }
.nav-link.admin-link:hover { color: var(--primary-light); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--white); transition: var(--transition); }

/* === Hero === */
.hero { position: relative; min-height: 600px; display: flex; align-items: center; overflow: hidden; }
.hero-slide { position: absolute; inset: 0; }
.hero-bg { position: absolute; inset: 0; background: linear-gradient(135deg, #0a1628 0%, #1a365d 40%, #2563eb 100%); }
.hero-content { position: relative; z-index: 2; max-width: 700px; padding: 100px 60px; color: var(--white); }
.hero-title { font-size: 42px; font-weight: 700; margin-bottom: 16px; line-height: 1.3; letter-spacing: 2px; }
.hero-subtitle { font-size: 18px; margin-bottom: 8px; font-weight: 400; letter-spacing: 1px; opacity: 0.9; }
.hero-desc { font-size: 14px; opacity: 0.65; margin-bottom: 36px; line-height: 1.7; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-indicators { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); z-index: 3; display: flex; gap: 8px; }
.indicator { width: 32px; height: 3px; background: rgba(255,255,255,0.3); border-radius: 0; }
.indicator.active { background: var(--primary); }

/* === 产品分类导航条 === */
.category-nav { background: var(--white); padding: 0; border-bottom: 1px solid var(--gray-5); }
.category-nav-grid { display: flex; }
.category-nav-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 28px 12px; text-align: center; transition: var(--transition); border-right: 1px solid var(--gray-5); }
.category-nav-item:last-child { border-right: none; }
.category-nav-item:hover { background: var(--gray-7); }
.cat-nav-icon { font-size: 28px; }
.cat-nav-name { font-size: 13px; font-weight: 600; color: var(--dark-3); letter-spacing: 0.5px; }

/* === 通用区块 === */
.section { padding: 72px 0; }
.section-alt { background: var(--gray-7); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-title { font-size: 30px; font-weight: 700; margin-bottom: 12px; letter-spacing: 1px; color: var(--dark); position: relative; display: inline-block; }
.section-title::after { content: ''; display: block; width: 40px; height: 2px; background: var(--primary); margin: 12px auto 0; }
.section-desc { font-size: 14px; color: var(--gray-2); margin-top: 8px; }
.section-more { text-align: center; margin-top: 40px; }

/* === 页面标题 === */
.page-header { padding: 100px 0 40px; background: var(--dark); color: var(--white); text-align: center; }
.page-header h1 { font-size: 32px; font-weight: 700; margin-bottom: 8px; letter-spacing: 2px; }
.page-header p { font-size: 14px; opacity: 0.6; letter-spacing: 0.5px; }

/* === 面包屑 === */
.breadcrumb { padding: 16px 0; font-size: 12px; color: var(--gray-3); margin-bottom: 24px; }
.breadcrumb a { color: var(--gray-2); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--dark-3); }

/* === 产品卡片 === */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-card { background: var(--white); border: 1px solid var(--gray-5); overflow: hidden; transition: var(--transition); display: block; }
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-image { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--gray-6); }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-image img { transform: scale(1.05); }
.product-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: var(--gray-6); font-size: 28px; color: var(--gray-3); font-weight: 700; letter-spacing: 2px; }
.product-badge { position: absolute; top: 0; right: 0; background: var(--primary); color: var(--white); font-size: 11px; padding: 4px 10px; font-weight: 600; }
.product-info { padding: 16px 18px; }
.product-name { font-size: 14px; font-weight: 600; margin-bottom: 6px; line-height: 1.4; color: var(--dark-2); }
.product-summary { font-size: 12px; color: var(--gray-2); margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.6; }
.product-link { font-size: 12px; color: var(--primary); font-weight: 600; letter-spacing: 0.5px; }
.product-link:hover { color: var(--primary-dark); }

/* === 产品详情 === */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.product-detail-left { overflow: hidden; }
.product-detail-info h1 { font-size: 26px; font-weight: 700; margin-bottom: 12px; letter-spacing: 1px; }
.product-meta { font-size: 13px; color: var(--gray-2); margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--gray-5); }
.product-detail-summary { font-size: 14px; color: var(--gray-1); line-height: 1.8; margin-bottom: 24px; }
.product-actions { display: flex; gap: 12px; margin-bottom: 24px; }
.product-features { background: var(--gray-7); padding: 20px 24px; }
.product-features h4 { font-size: 14px; margin-bottom: 12px; font-weight: 600; }
.product-features li { font-size: 13px; color: var(--gray-1); padding: 4px 0; padding-left: 18px; position: relative; }
.product-features li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }
.product-content { margin-bottom: 48px; }
.product-content h2 { font-size: 22px; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--gray-5); font-weight: 700; }
.content-body { font-size: 14px; line-height: 1.8; color: var(--gray-1); }
.related-products { margin-top: 48px; }
.related-products h2 { font-size: 22px; margin-bottom: 24px; font-weight: 700; }

/* === 产品列表布局 === */
.products-layout { display: grid; grid-template-columns: 240px 1fr; gap: 32px; }
.products-sidebar { position: sticky; top: 80px; align-self: start; }
.products-sidebar h3 { font-size: 16px; font-weight: 700; margin-bottom: 0; padding-bottom: 14px; border-bottom: 2px solid var(--dark); letter-spacing: 1px; }
.category-list li { margin-bottom: 0; }
.cat-link { display: flex; justify-content: space-between; padding: 12px 14px; font-size: 13px; color: var(--gray-1); border-bottom: 1px solid var(--gray-5); }
.cat-link:hover, .cat-link.active { color: var(--primary); background: var(--gray-7); }
.cat-count { font-size: 11px; color: var(--gray-3); }
.products-main { min-width: 0; }
.current-filter { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: var(--primary-light); margin-bottom: 20px; font-size: 13px; }
.clear-filter { color: var(--primary); font-weight: 600; }

/* === 优势卡片 === */
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.advantage-card { padding: 40px 32px; text-align: center; border: 1px solid var(--gray-5); transition: var(--transition); }
.advantage-card:hover { background: var(--dark); color: var(--white); }
.advantage-card:hover p { color: var(--gray-3); }
.advantage-icon { font-size: 36px; margin-bottom: 18px; }
.advantage-card h3 { font-size: 16px; margin-bottom: 12px; font-weight: 700; letter-spacing: 1px; }
.advantage-card p { font-size: 13px; color: var(--gray-2); line-height: 1.7; }

/* === 统计 === */
.stats-section { background: var(--dark); padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; color: var(--white); }
.stat-number { font-size: 42px; font-weight: 700; margin-bottom: 6px; color: var(--primary); }
.stat-label { font-size: 13px; opacity: 0.6; letter-spacing: 1px; }

/* === 新闻 === */
.news-grid-home { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card-home { background: var(--white); border: 1px solid var(--gray-5); overflow: hidden; transition: var(--transition); }
.news-card-home:hover { box-shadow: var(--shadow-md); }
.news-card-image { aspect-ratio: 16/9; overflow: hidden; background: var(--gray-6); }
.news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card-home:hover .news-card-image img { transform: scale(1.05); }
.news-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 32px; background: var(--gray-6); }
.news-card-body { padding: 20px; }
.news-card-date { font-size: 11px; color: var(--gray-3); margin-bottom: 8px; letter-spacing: 0.5px; }
.news-card-title { font-size: 15px; font-weight: 600; margin-bottom: 8px; line-height: 1.4; color: var(--dark-2); }
.news-card-summary { font-size: 12px; color: var(--gray-2); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.6; }
.news-card-link { font-size: 12px; color: var(--primary); font-weight: 600; }

/* 新闻列表 */
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-list-item { display: flex; gap: 24px; background: var(--white); border: 1px solid var(--gray-5); border-bottom: none; padding: 24px; transition: var(--transition); }
.news-list-item:last-child { border-bottom: 1px solid var(--gray-5); }
.news-list-item:hover { background: var(--gray-7); }
.news-list-image { flex-shrink: 0; width: 180px; height: 120px; overflow: hidden; background: var(--gray-6); }
.news-list-image img { width: 100%; height: 100%; object-fit: cover; }
.news-placeholder-sm { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 24px; }
.news-list-content { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.news-list-date { font-size: 12px; color: var(--gray-3); margin-bottom: 8px; }
.news-list-content h2 { font-size: 17px; font-weight: 600; margin-bottom: 8px; color: var(--dark-2); }
.news-list-content p { font-size: 13px; color: var(--gray-2); margin-bottom: 10px; line-height: 1.6; }
.news-link { color: var(--primary); font-size: 12px; font-weight: 600; }

/* 新闻详情 */
.news-detail { max-width: 800px; margin: 0 auto; }
.news-detail h1 { font-size: 26px; font-weight: 700; margin-bottom: 12px; letter-spacing: 0.5px; }
.news-meta { font-size: 13px; color: var(--gray-2); margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--gray-5); }
.news-meta span { margin-right: 20px; }
.news-content { font-size: 14px; line-height: 1.8; color: var(--gray-1); }
.news-detail-image { margin-bottom: 24px; }
.news-detail-image img { width: 100%; }
.news-nav { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--gray-5); }

/* === CTA === */
.cta-section { background: var(--dark); padding: 64px 0; text-align: center; color: var(--white); }
.cta-section h2 { font-size: 26px; margin-bottom: 10px; font-weight: 700; letter-spacing: 1px; }
.cta-section p { font-size: 14px; opacity: 0.6; margin-bottom: 28px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* === 关于页面 === */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.about-text h2 { font-size: 26px; margin-bottom: 20px; font-weight: 700; letter-spacing: 1px; }
.about-text p { color: var(--gray-1); margin-bottom: 14px; line-height: 1.8; font-size: 14px; }
.about-placeholder { background: var(--gray-7); border: 1px solid var(--gray-5); padding: 80px 40px; text-align: center; }
.about-placeholder span { font-size: 48px; }
.about-placeholder p { margin-top: 12px; color: var(--gray-2); }

.strength-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.strength-card { text-align: center; padding: 36px 24px; border: 1px solid var(--gray-5); transition: var(--transition); }
.strength-card:hover { background: var(--dark); color: var(--white); }
.strength-card:hover p { color: var(--gray-3); }
.strength-icon { font-size: 36px; margin-bottom: 16px; }
.strength-card h3 { font-size: 15px; margin-bottom: 10px; font-weight: 700; letter-spacing: 0.5px; }
.strength-card p { font-size: 12px; color: var(--gray-2); }

/* 时间线 */
.timeline { position: relative; padding-left: 36px; max-width: 700px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 12px; top: 0; bottom: 0; width: 1px; background: var(--gray-5); }
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before { content: ''; position: absolute; left: -29px; top: 4px; width: 8px; height: 8px; background: var(--primary); }
.timeline-year { font-size: 12px; font-weight: 700; color: var(--primary); margin-bottom: 4px; letter-spacing: 1px; }
.timeline-content h3 { font-size: 16px; margin-bottom: 4px; font-weight: 600; }
.timeline-content p { font-size: 13px; color: var(--gray-2); }

/* === 联系页面 === */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info h2, .contact-form-wrapper h2 { font-size: 22px; margin-bottom: 20px; font-weight: 700; letter-spacing: 1px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-icon { font-size: 20px; flex-shrink: 0; }
.contact-item h4 { font-size: 14px; margin-bottom: 2px; font-weight: 600; }
.contact-item p { font-size: 13px; color: var(--gray-2); }
.form-tip { font-size: 13px; color: var(--gray-2); margin-bottom: 16px; }
.contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--dark-3); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 10px 14px; border: 1px solid var(--gray-5); font-size: 13px; font-family: var(--font); transition: var(--transition); background: var(--white); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--dark); }
.alert { padding: 10px 14px; margin-bottom: 16px; font-size: 13px; }
.alert-success { background: #e8f5e9; color: #2e7d32; border: 1px solid #c8e6c9; }
.alert-error { background: #fce4ec; color: #c62828; border: 1px solid #f8bbd0; }
.map-placeholder { background: var(--gray-7); border: 1px solid var(--gray-5); padding: 60px; text-align: center; }
.map-placeholder span { font-size: 40px; }
.map-placeholder p { margin-top: 10px; color: var(--gray-2); font-size: 14px; }
.map-placeholder small { color: var(--gray-3); font-size: 12px; }

/* === 分页 === */
.pagination { display: flex; gap: 4px; justify-content: center; margin-top: 32px; }
.page-link { padding: 8px 14px; border: 1px solid var(--gray-5); font-size: 13px; color: var(--gray-1); }
.page-link:hover, .page-link.active { background: var(--dark); color: var(--white); border-color: var(--dark); }
.page-dots { padding: 8px 6px; color: var(--gray-3); }
.empty-state { text-align: center; padding: 60px 20px; color: var(--gray-2); }

/* === 页脚 === */
.footer { background: #111; color: var(--gray-3); padding: 56px 0 0; border-top: 3px solid var(--primary); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer h3 { color: var(--white); font-size: 18px; margin-bottom: 16px; font-weight: 700; letter-spacing: 1px; }
.footer h4 { color: var(--white); font-size: 14px; margin-bottom: 16px; font-weight: 600; letter-spacing: 0.5px; }
.footer-desc { font-size: 13px; margin-bottom: 14px; line-height: 1.8; color: var(--gray-3); }
.footer-contact-info p { font-size: 13px; margin-bottom: 8px; }
.footer-contact-info strong { color: var(--gray-4); }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 13px; color: var(--gray-3); transition: var(--transition); }
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.qr-placeholder { width: 90px; height: 90px; background: var(--dark-3); display: flex; align-items: center; justify-content: center; margin-bottom: 8px; border: 1px solid rgba(255,255,255,0.1); }
.qr-placeholder span { font-size: 11px; color: var(--gray-3); }
.footer-qr p { font-size: 12px; color: var(--gray-3); }
.footer-bottom { padding: 20px 0; text-align: center; font-size: 12px; color: var(--gray-2); letter-spacing: 0.5px; }

/* === 浮动工具栏 === */
.float-toolbar { position: fixed; right: 0; top: 50%; transform: translateY(-50%); z-index: 999; display: flex; flex-direction: column; }
.float-btn { display: flex; flex-direction: column; align-items: center; gap: 4px; background: var(--dark-2); color: var(--white); padding: 12px 10px; font-size: 11px; transition: var(--transition); border-bottom: 1px solid var(--dark-3); }
.float-btn:hover { background: var(--primary); }
.float-icon { font-size: 18px; }
.float-label { font-size: 10px; letter-spacing: 0.5px; }

/* ============================================
   管理后台
   ============================================ */
.admin-body { background: var(--gray-6); }
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 240px; background: var(--dark); color: var(--white); flex-shrink: 0; }
.sidebar-header { padding: 20px; border-bottom: 1px solid var(--dark-3); }
.sidebar-header h2 { font-size: 16px; margin-bottom: 2px; letter-spacing: 1px; }
.sidebar-header span { font-size: 11px; color: var(--gray-3); }
.sidebar-nav { padding: 12px; }
.sidebar-link { display: flex; align-items: center; gap: 10px; padding: 10px 14px; color: var(--gray-3); font-size: 13px; margin-bottom: 2px; }
.sidebar-link:hover, .sidebar-link.active { background: var(--dark-2); color: var(--white); }
.sidebar-icon { font-size: 16px; }
.sidebar-divider { height: 1px; background: var(--dark-3); margin: 8px 0; }
.admin-main { flex: 1; overflow: auto; }
.admin-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; background: var(--white); border-bottom: 1px solid var(--gray-5); }
.admin-header h1 { font-size: 18px; font-weight: 700; }
.admin-user { font-size: 13px; color: var(--gray-2); }
.admin-content { padding: 24px; }
.admin-alert { padding: 10px 14px; margin-bottom: 16px; font-size: 13px; }
.admin-alert.alert-success { background: #e8f5e9; color: #2e7d32; }
.admin-alert.alert-error { background: #fce4ec; color: #c62828; }

.admin-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.admin-stat-card { background: var(--white); padding: 20px; display: flex; align-items: center; gap: 14px; box-shadow: var(--shadow); }
.stat-icon { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; font-size: 20px; background: var(--gray-6); }
.stat-icon.blue { background: #e3f2fd; }
.stat-icon.green { background: #e8f5e9; }
.stat-icon.orange { background: #fff3e0; }
.stat-icon.purple { background: #f3e5f5; }
.stat-info h3 { font-size: 22px; font-weight: 700; }
.stat-info p { font-size: 12px; color: var(--gray-2); }

.admin-panel { background: var(--white); padding: 20px; margin-bottom: 20px; box-shadow: var(--shadow); }
.admin-panel h2 { font-size: 15px; margin-bottom: 16px; font-weight: 700; }
.panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.panel-header h2 { margin-bottom: 0; }

.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--gray-5); font-size: 13px; }
.admin-table th { font-weight: 600; color: var(--gray-2); font-size: 12px; background: var(--gray-7); }
.admin-table tr.unread { background: #fffde7; }
.table-thumb { width: 50px; height: 50px; object-fit: cover; }
.table-thumb-placeholder { width: 50px; height: 50px; background: var(--gray-6); display: flex; align-items: center; justify-content: center; color: var(--gray-3); }
.badge { display: inline-block; padding: 2px 8px; font-size: 11px; background: var(--gray-6); color: var(--gray-2); }
.badge-green { background: #e8f5e9; color: #2e7d32; }

.admin-form { max-width: 700px; }
.admin-form.form-inline { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; max-width: 100%; }
.admin-form.form-inline .form-group { margin-bottom: 0; }
.admin-form.form-inline input { padding: 8px 12px; border: 1px solid var(--gray-5); font-size: 13px; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { margin-top: 24px; display: flex; gap: 12px; }
.current-image { margin-bottom: 10px; }
.current-image img { max-width: 200px; margin-bottom: 4px; }
.current-image span { font-size: 11px; color: var(--gray-2); }
.empty-text { text-align: center; padding: 32px; color: var(--gray-2); font-size: 13px; }

.quick-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.quick-action-btn { padding: 10px 18px; background: var(--gray-7); border: 1px solid var(--gray-5); font-size: 13px; transition: var(--transition); }
.quick-action-btn:hover { background: var(--primary-light); border-color: var(--primary); }

/* === Hero 轮播增强 === */
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 60%, transparent 100%); z-index: 1; }
.hero-slide { opacity: 0; transition: opacity 0.8s ease-in-out; z-index: 0; pointer-events: none; }
.hero-slide.active { opacity: 1; z-index: 1; pointer-events: auto; }
.hero-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 5; background: rgba(0,0,0,0.4); color: #fff; border: none; width: 48px; height: 48px; font-size: 20px; cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; }
.hero-arrow:hover { background: var(--primary); }
.hero-arrow-left { left: 20px; }
.hero-arrow-right { right: 20px; }
.hero-bg { background-size: cover; background-position: center; }

/* === 产品视频标记 === */
.product-video-badge { position: absolute; bottom: 8px; left: 8px; background: rgba(0,0,0,0.7); color: #fff; font-size: 11px; padding: 3px 8px; font-weight: 500; border-radius: 2px; }

/* === 视频区域 === */
.video-section { background: var(--dark); padding: 72px 0; }
.video-section .section-title { color: var(--white); }
.video-section .section-desc { color: var(--gray-3); }
.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; background: #000; border: 1px solid rgba(255,255,255,0.1); }
.video-wrapper iframe, .video-wrapper video { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }

/* === 信任度认证 === */
.trust-section { background: var(--gray-7); }
.trust-badges { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; }
.trust-badge { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 20px 24px; background: var(--white); border: 1px solid var(--gray-5); min-width: 120px; text-align: center; transition: var(--transition); }
.trust-badge:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.trust-icon { font-size: 28px; }
.trust-badge span { font-size: 14px; font-weight: 700; color: var(--dark-2); letter-spacing: 0.5px; }
.trust-badge small { font-size: 11px; color: var(--gray-2); }

/* === 产品图片画廊 === */
.product-gallery { display: flex; flex-direction: column; gap: 12px; }
.gallery-main { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--gray-6); }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; transition: opacity 0.3s; }
.gallery-thumbs { display: flex; gap: 8px; }
.gallery-thumb { width: 72px; height: 54px; overflow: hidden; cursor: pointer; border: 2px solid transparent; transition: var(--transition); opacity: 0.6; }
.gallery-thumb:hover, .gallery-thumb.active { border-color: var(--primary); opacity: 1; }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-video { margin-top: 12px; }
.gallery-video video, .gallery-video iframe { width: 100%; aspect-ratio: 16/9; border: none; }
.product-placeholder-lg { width: 100%; aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; background: var(--gray-6); font-size: 48px; color: var(--gray-3); font-weight: 700; }

/* === 多图上传UI === */
.image-upload-area { border: 2px dashed var(--gray-5); padding: 20px; text-align: center; transition: var(--transition); margin-bottom: 12px; }
.image-upload-area:hover { border-color: var(--primary); background: var(--primary-light); }
.image-upload-area input[type="file"] { margin-top: 8px; }
.current-images { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.current-images .thumb-item { position: relative; width: 80px; height: 80px; border: 1px solid var(--gray-5); overflow: hidden; }
.current-images .thumb-item img { width: 100%; height: 100%; object-fit: cover; }
.current-images .thumb-item .remove-img { position: absolute; top: 2px; right: 2px; background: var(--danger); color: #fff; border: none; width: 18px; height: 18px; font-size: 10px; cursor: pointer; line-height: 1; }
.video-upload-area { border: 2px dashed var(--gray-5); padding: 16px; text-align: center; margin-bottom: 12px; }
.video-upload-area:hover { border-color: var(--primary); }
.current-video { margin-bottom: 12px; }
.current-video video { max-width: 300px; max-height: 200px; }

/* === 统计数字动画 === */
.stat-number { transition: none; }

/* === 产品卡片增强 === */
.product-card { box-shadow: 0 1px 3px rgba(0,0,0,0.04); }
.product-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.12); }

/* === 按钮增强 === */
.btn-primary { box-shadow: 0 2px 4px rgba(200,164,92,0.2); }
.btn-primary:hover { box-shadow: 0 4px 12px rgba(200,164,92,0.3); transform: translateY(-1px); }
.btn-lg { box-shadow: 0 2px 8px rgba(200,164,92,0.25); }

/* === 页脚增强 === */
.footer { box-shadow: 0 -4px 20px rgba(0,0,0,0.1); }

/* === 404 错误页 === */
.error-page { text-align: center; padding: 40px 0; }
.error-code { font-size: 120px; font-weight: 700; color: var(--gray-5); line-height: 1; margin-bottom: 16px; letter-spacing: 8px; }
.error-page h2 { font-size: 24px; margin-bottom: 12px; color: var(--dark); }
.error-page > p { font-size: 14px; color: var(--gray-2); margin-bottom: 32px; }
.error-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.error-suggest { max-width: 400px; margin: 0 auto; text-align: left; }
.error-suggest h3 { font-size: 15px; margin-bottom: 12px; color: var(--dark-3); }
.error-suggest li { padding: 8px 0; border-bottom: 1px solid var(--gray-5); font-size: 13px; }
.error-suggest li a { color: var(--primary); font-weight: 600; }
.error-suggest li a:hover { text-decoration: underline; }

/* === 响应式 === */
@media (max-width: 1024px) {
    .product-grid { grid-template-columns: repeat(3, 1fr); }
    .category-nav-grid { flex-wrap: wrap; }
    .category-nav-item { flex: 0 0 25%; border-right: 1px solid var(--gray-5); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .strength-grid { grid-template-columns: repeat(2, 1fr); }
    .admin-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-menu { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--dark-2); flex-direction: column; box-shadow: var(--shadow-lg); }
    .nav-menu.active { display: flex; }
    .nav-link { padding: 14px 24px; border-bottom: 1px solid var(--dark-3); }
    .nav-link::after { display: none; }
    .top-bar { display: none; }
    .hero { min-height: 400px; }
    .hero-title { font-size: 28px; letter-spacing: 1px; }
    .hero-content { padding: 40px 24px; }
    .hero-subtitle { font-size: 15px; }
    .category-nav-grid { flex-direction: column; }
    .category-nav-item { flex: none; flex-direction: row; gap: 12px; padding: 14px 20px; border-right: none; border-bottom: 1px solid var(--gray-5); }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .products-layout { grid-template-columns: 1fr; }
    .products-sidebar { position: static; }
    .product-detail { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid-home { grid-template-columns: 1fr; }
    .about-intro { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .strength-grid { grid-template-columns: 1fr; }
    .section { padding: 48px 0; }
    .section-title { font-size: 22px; }
    .page-header { padding: 80px 0 32px; }
    .page-header h1 { font-size: 24px; }
    .news-list-item { flex-direction: column; }
    .news-list-image { width: 100%; height: 160px; }
    .admin-layout { flex-direction: column; }
    .admin-sidebar { width: 100%; }
    .admin-stats { grid-template-columns: 1fr; }
    .form-row-2 { grid-template-columns: 1fr; }
    .float-toolbar { display: none; }
    .contact-form .form-row { grid-template-columns: 1fr; }
    .trust-badges { gap: 12px; }
    .trust-badge { min-width: 100px; padding: 14px 12px; }
    .gallery-thumbs { flex-wrap: wrap; }
    .hero-arrow { width: 36px; height: 36px; font-size: 16px; }
    .hero-arrow-left { left: 8px; }
    .hero-arrow-right { right: 8px; }
}