/* 乐享包装 - 默认模板样式 */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --accent: #f59e0b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航 */
.site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}
.main-nav { display: flex; gap: 20px; align-items: center; }
.main-nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}
.main-nav a:hover { color: var(--primary); }
.btn-nav {
    background: var(--primary);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: var(--radius);
}

/* 英雄区 */
.hero {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    color: #fff;
    padding: 80px 20px;
    text-align: center;
}
.hero-title {
    font-size: 2.8rem;
    margin-bottom: 16px;
    line-height: 1.3;
}
.text-accent { color: var(--accent); }
.hero-desc {
    font-size: 1.15rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 32px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: var(--radius);
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: #000; border-color: var(--accent); }
.btn-primary:hover { background: #d97706; }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-outline:hover { border-color: #fff; }
.btn-lg { font-size: 1.1rem; padding: 14px 40px; }

/* 区块 */
.section { padding: 60px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 12px;
}
.section-desc { text-align: center; color: var(--text-light); margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto; }

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

/* 网格 */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* 卡片 */
.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: box-shadow 0.2s;
}
.card:hover { box-shadow: var(--shadow); }
.card-icon { font-size: 2.5rem; margin-bottom: 12px; }
.card h3 { margin-bottom: 8px; font-size: 1.15rem; }
.card p { color: var(--text-light); font-size: 0.9rem; }

.advantage {
    text-align: center;
    padding: 32px 24px;
}
.advantage h3 { font-size: 1.25rem; margin-bottom: 8px; color: var(--primary); }
.advantage p { color: var(--text-light); }

/* 页脚 */
.site-footer {
    background: #1e293b;
    color: #cbd5e1;
    padding: 48px 0 24px;
    margin-top: 60px;
}
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-bottom: 32px; }
.footer-col h4 { color: #fff; margin-bottom: 12px; }
.footer-bottom { border-top: 1px solid #334155; padding-top: 20px; text-align: center; font-size: 0.9rem; }

/* 页面内容 */
.page-content { max-width: 800px; margin: 40px auto; }
.page-content h1 { margin-bottom: 24px; }

/* ===== 通用组件 ===== */
.empty-state { text-align:center; padding:60px 20px; color:var(--text-light); }
.empty-state p { font-size:1.2rem; margin-bottom:20px; }
.pagination { display:flex; justify-content:center; gap:8px; margin-top:32px; }
.pagination a { display:inline-block; padding:6px 14px; border:1px solid var(--border); border-radius:6px; text-decoration:none; color:var(--text); font-size:0.9rem; }
.pagination a.active, .pagination a:hover { background:var(--primary); color:#fff; border-color:var(--primary); }
.back-link { display:inline-block; margin-bottom:20px; color:var(--primary); text-decoration:none; }
.back-link:hover { text-decoration:underline; }

/* 案例卡片 */
.card-case .card-img-wrap { width:100%; height:200px; overflow:hidden; border-radius:8px 8px 0 0; margin:-32px -24px 16px; }
.card-case .card-img-wrap img { width:100%; height:100%; object-fit:cover; }
.card-case .card-img-placeholder { width:calc(100% + 48px); height:180px; background:var(--bg-alt); border-radius:8px 8px 0 0; margin:-32px -24px 16px; display:flex; align-items:center; justify-content:center; font-size:3rem; }
.card-case .card-body { text-align:left; }
.card-case .card-body h3 { text-align:left; }
.card-tag { display:inline-block; background:#eff6ff; color:var(--primary); padding:3px 10px; border-radius:4px; font-size:0.8rem; margin-bottom:8px; }

/* 案例详情 */
.case-detail .detail-header h1 { font-size:1.8rem; margin-bottom:16px; }
.detail-meta { display:flex; gap:24px; flex-wrap:wrap; margin-bottom:24px; padding:16px; background:var(--bg-alt); border-radius:8px; }
.meta-item { font-size:0.95rem; }
.detail-block { margin-bottom:24px; }
.detail-block h3 { font-size:1.15rem; margin-bottom:8px; color:var(--primary); }

/* 知识库 */
.cat-filter { display:flex; flex-wrap:wrap; gap:8px; justify-content:center; margin-bottom:32px; }
.cat-btn { display:inline-block; padding:6px 16px; border:1px solid var(--border); border-radius:20px; text-decoration:none; color:var(--text); font-size:0.9rem; transition:all .2s; }
.cat-btn.active, .cat-btn:hover { background:var(--primary); color:#fff; border-color:var(--primary); }
.article-list { display:flex; flex-direction:column; gap:16px; }
.article-card { display:block; padding:20px 24px; border:1px solid var(--border); border-radius:8px; text-decoration:none; color:inherit; transition:box-shadow .2s; }
.article-card:hover { box-shadow:var(--shadow); }
.article-cat { display:inline-block; background:#fef3c7; color:#92400e; padding:2px 8px; border-radius:4px; font-size:0.8rem; margin-bottom:8px; }
.article-card h3 { font-size:1.1rem; margin-bottom:6px; }
.article-summary { color:var(--text-light); font-size:0.9rem; margin-bottom:8px; }
.article-time { font-size:0.8rem; color:#94a3b8; }

/* 知识库详情 */
.knowledge-detail .detail-header { margin-bottom:24px; }
.knowledge-detail .detail-header .detail-cat { display:inline-block; background:#fef3c7; color:#92400e; padding:3px 12px; border-radius:4px; font-size:0.85rem; margin-bottom:12px; }
.knowledge-detail .detail-header time { color:#94a3b8; font-size:0.9rem; }
.detail-content { line-height:1.8; font-size:1.05rem; }
.detail-content h2 { margin:24px 0 12px; font-size:1.3rem; }
.detail-content h3 { margin:20px 0 10px; }
.detail-content p { margin-bottom:12px; }
.detail-content ul, .detail-content ol { margin:12px 0; padding-left:24px; }
.detail-content li { margin-bottom:6px; }
.detail-tags { display:flex; gap:8px; flex-wrap:wrap; margin-top:20px; }
.tag { display:inline-block; background:#f0f0f0; padding:4px 12px; border-radius:4px; font-size:0.85rem; color:#666; }

/* 解决方案 */
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.card-solution { text-decoration:none; color:inherit; text-align:left; }
.card-solution h3 { text-align:left; }

/* 解决方案/详情 */
.detail-page { max-width:860px; margin:0 auto; }
.detail-page h1 { margin-bottom:12px; }
.detail-tag { display:inline-block; background:#eff6ff; color:var(--primary); padding:3px 12px; border-radius:4px; font-size:0.85rem; margin-bottom:24px; }

/* 报价表单 */
.quote-form { background:#fff; border:1px solid var(--border); border-radius:12px; padding:32px; }
.form-row { margin-bottom:16px; }
.form-row label { display:block; margin-bottom:4px; font-weight:500; }
.form-row input, .form-row select, .form-row textarea { width:100%; padding:10px 12px; border:1px solid #ddd; border-radius:6px; font-size:0.95rem; font-family:inherit; }
.form-row textarea { resize:vertical; }
.form-inline { display:flex; gap:12px; }
.required { color:#dc2626; }
.msg-success { text-align:center; padding:60px 20px; }
.msg-success h3 { font-size:1.4rem; margin-bottom:12px; color:#16a34a; }
.msg-error { padding:10px 14px; background:#fef2f2; color:#dc2626; border-radius:6px; margin-bottom:16px; font-size:0.9rem; }

/* AI顾问 */
.advisor-chat { background:#fff; border:1px solid var(--border); border-radius:12px; overflow:hidden; }
.chat-messages { height:400px; overflow-y:auto; padding:20px; background:var(--bg-alt); }
.chat-msg { margin-bottom:16px; display:flex; }
.chat-msg.user { justify-content:flex-end; }
.chat-msg.user .msg-content { background:var(--primary); color:#fff; border-radius:12px 12px 4px 12px; }
.chat-msg.bot .msg-content { background:#fff; border:1px solid var(--border); border-radius:12px 12px 12px 4px; }
.msg-content { padding:12px 16px; max-width:80%; font-size:0.95rem; line-height:1.5; }
.chat-input { display:flex; gap:8px; padding:16px; border-top:1px solid var(--border); }
.chat-input input { flex:1; padding:10px 14px; border:1px solid #ddd; border-radius:6px; font-size:0.95rem; }

/* ===== 汉堡菜单（移动端） ===== */
.hamburger { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; z-index:101; }
.hamburger span { display:block; width:24px; height:2.5px; background:var(--text); border-radius:2px; transition:all 0.3s; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity:0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
.mobile-nav { display:none; position:fixed; top:64px; left:0; right:0; bottom:0; background:var(--bg); flex-direction:column; padding:20px; gap:4px; z-index:99; overflow-y:auto; box-shadow:0 4px 12px rgba(0,0,0,0.1); }
.mobile-nav.open { display:flex; }
.mobile-nav a { display:block; padding:14px 16px; font-size:1.1rem; color:var(--text); text-decoration:none; border-bottom:1px solid var(--border); }
.mobile-nav a:hover { color:var(--primary); }
.mobile-btn-nav { background:var(--primary); color:#fff !important; text-align:center; border-radius:var(--radius); margin-top:8px; border-bottom:none !important; }

/* 响应式 */
@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .main-nav { display: none; }
    .hamburger { display:flex; }
    .section-title { font-size: 1.6rem; }
    .form-inline { flex-direction:column; }
    .detail-meta { flex-direction:column; gap:8px; }
    .quote-form { padding:20px; }
    .pd-hero { flex-direction:column; }
    .pd-grid { grid-template-columns:1fr; }
    .pd-cover { max-height:300px; }
}

/* ===== 产品详情 ===== */
.product-detail { max-width:900px; margin:0 auto; }
.pd-hero { display:flex; gap:32px; align-items:flex-start; margin-bottom:32px; padding-bottom:32px; border-bottom:1px solid var(--border); }
.pd-cover { width:400px; max-width:100%; border-radius:12px; object-fit:cover; }
.pd-info { flex:1; }
.pd-info h1 { font-size:1.8rem; margin:8px 0; }
.pd-summary { color:var(--text-light); margin-bottom:20px; line-height:1.7; }
.pd-actions { display:flex; gap:12px; flex-wrap:wrap; }
.pd-section { margin-bottom:28px; padding-top:8px; }
.pd-section h2 { font-size:1.2rem; margin-bottom:12px; padding-bottom:8px; border-bottom:2px solid var(--primary); display:inline-block; }
.pd-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.pd-list { list-style:none; padding:0; }
.pd-list li { padding:6px 0; border-bottom:1px solid var(--border); }
.pd-list li:before { content:"✓ "; color:var(--primary); font-weight:bold; }
.faq-item { padding:12px 0; border-bottom:1px solid var(--border); cursor:pointer; }
.faq-item summary { font-weight:500; padding:4px 0; }
.faq-item p { padding:8px 0 4px 16px; color:var(--text-light); }
.pd-cta { text-align:center; padding:48px 20px; background:var(--bg-alt); border-radius:12px; margin-top:32px; }
.pd-cta h2 { margin-bottom:8px; }