*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
body { font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif; overflow-x:hidden; background:#fef9f0; }

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:linear-gradient(135deg, #fef9f0 0%, #f8efe4 100%); }

/* 导航 — 水墨卷轴风格 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(254,249,240,0.92); backdrop-filter:blur(12px); border-bottom:2px solid #d4c5a9; }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; max-width:1200px; margin:0 auto; padding:0 24px; }
.logo { display:flex; align-items:center; gap:10px; font-weight:800; font-size:1.3rem; text-decoration:none; color:#5a4a3a; letter-spacing:2px; }
.logo-icon { width:40px; height:40px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1.2rem; background:linear-gradient(135deg, #c9a96e, #a67c52); color:#fef9f0; box-shadow:0 2px 8px rgba(166,124,82,0.3); }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; color:#5a4a3a; transition:0.3s; position:relative; padding:4px 0; }
.main-nav a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:2px; background:#c9a96e; transition:0.3s; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:10px 24px; border-radius:30px; color:#fef9f0!important; font-weight:600; background:linear-gradient(135deg, #a67c52, #8b5e3c); box-shadow:0 4px 12px rgba(139,94,60,0.25); letter-spacing:1px; }
.menu-toggle { display:none; background:none; border:2px solid #a67c52; color:#5a4a3a; padding:8px 12px; border-radius:6px; cursor:pointer; font-size:1.2rem; }

/* Hero — 卷轴展开 */
.hero { min-height:75vh; display:flex; align-items:center; position:relative; background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23f8efe4" d="M0,96L48,112C96,128,192,160,288,165.3C384,171,480,149,576,138.7C672,128,768,128,864,149.3C960,171,1056,213,1152,218.7C1248,224,1344,192,1392,176L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"/></svg>') no-repeat bottom; background-size:cover; }
.hero-content { max-width:680px; position:relative; z-index:2; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:700; padding:6px 18px; border-radius:30px; margin-bottom:18px; background:#e8d5c0; color:#5a4a3a; letter-spacing:3px; text-transform:uppercase; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:18px; color:#3d2e1f; font-weight:800; letter-spacing:-1px; }
.hero h1 span { color:#a67c52; display:inline-block; border-bottom:3px solid #c9a96e; }
.hero p { font-size:1.15rem; opacity:0.75; max-width:540px; margin-bottom:36px; color:#5a4a3a; line-height:1.6; }
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:16px; overflow:hidden; box-shadow:0 8px 32px rgba(166,124,82,0.15); }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 — 印章风格 */
.btn { display:inline-flex; align-items:center; gap:10px; padding:14px 32px; border-radius:30px; font-weight:700; cursor:pointer; border:none; text-decoration:none; transition:0.3s; letter-spacing:1px; }
.btn-primary { color:#fef9f0; background:linear-gradient(135deg, #a67c52, #8b5e3c); box-shadow:0 4px 16px rgba(139,94,60,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(139,94,60,0.4); }
.btn-outline { background:transparent; border:2px solid #a67c52; color:#5a4a3a; }
.btn-outline:hover { background:#a67c52; color:#fef9f0; }

/* 标签/标题 — 宣纸纹理 */
.section-label { display:inline-block; font-size:0.75rem; font-weight:700; letter-spacing:4px; margin-bottom:14px; color:#a67c52; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:16px; color:#3d2e1f; font-weight:800; letter-spacing:-0.5px; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:44px; color:#5a4a3a; line-height:1.7; }

/* 卡片网格 — 古风卡片 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:28px; }
.category-card { border-radius:16px; padding:32px 28px; background:#fef9f0; border:1px solid #e8d5c0; transition:0.4s; position:relative; overflow:hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:4px; height:100%; background:linear-gradient(180deg, #c9a96e, #a67c52); }
.category-card:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(166,124,82,0.12); border-color:#c9a96e; }
.card-icon { width:52px; height:52px; border-radius:12px; display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.5rem; background:linear-gradient(135deg, #f8efe4, #e8d5c0); color:#a67c52; }
.card-link { font-weight:700; font-size:0.85rem; text-decoration:none; color:#a67c52; display:inline-flex; align-items:center; gap:6px; }
.card-link::after { content:'→'; transition:0.3s; }
.card-link:hover::after { transform:translateX(4px); }

/* 特性块 — 左右对称 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; box-shadow:0 8px 24px rgba(166,124,82,0.1); }
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { padding:8px 0; display:flex; align-items:center; gap:10px; font-size:1.05rem; color:#3d2e1f; }
.feature-list li::before { content:'✦'; font-weight:700; color:#c9a96e; }

/* 数据条 — 印章计数 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { padding:28px 16px; border-radius:16px; background:#fef9f0; border:1px solid #e8d5c0; transition:0.3s; }
.stat-item:hover { border-color:#c9a96e; box-shadow:0 4px 16px rgba(166,124,82,0.08); }
.stat-number { font-size:2.4rem; font-weight:800; color:#a67c52; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; color:#5a4a3a; letter-spacing:1px; }

/* 内容墙 — 水墨卡片 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.content-wall-item { border-radius:16px; overflow:hidden; background:#fef9f0; border:1px solid #e8d5c0; transition:0.4s; }
.content-wall-item:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(166,124,82,0.12); border-color:#c9a96e; }
.content-wall-item img { width:100%; height:200px; object-fit:cover; }
.content-wall-body { padding:24px; }
.content-wall-body h3 { color:#3d2e1f; font-size:1.1rem; margin-bottom:8px; }
.content-wall-body p { color:#5a4a3a; opacity:0.7; font-size:0.9rem; }

/* FAQ — 折页效果 */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid #e8d5c0; border-radius:12px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fef9f0; transition:0.3s; }
.faq-item:hover { border-color:#c9a96e; }
.faq-item .faq-question { padding:18px 22px; font-weight:700; display:flex; justify-content:space-between; color:#3d2e1f; font-size:1.05rem; }
.faq-item .faq-question::after { content:'+'; font-size:1.3rem; color:#a67c52; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 22px 18px; display:none; opacity:0.75; color:#5a4a3a; line-height:1.7; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 — 锦缎风格 */
.cta-banner { padding:64px 32px; text-align:center; border-radius:20px; background:linear-gradient(135deg, #a67c52, #8b5e3c); color:#fef9f0; position:relative; overflow:hidden; }
.cta-banner::before { content:'◆ ◇ ◆ ◇ ◆'; position:absolute; top:10px; left:50%; transform:translateX(-50%); font-size:1.2rem; opacity:0.2; letter-spacing:20px; }
.cta-banner h2 { color:#fef9f0; font-size:2rem; margin-bottom:12px; }
.cta-banner p { opacity:0.9; margin-bottom:24px; }
.cta-banner .btn-primary { background:#fef9f0; color:#a67c52; box-shadow:0 4px 16px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { background:#fff; }

/* 页脚 — 古籍卷尾 */
.site-footer { padding:60px 0 28px; background:#3d2e1f; color:#e8d5c0; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand h3 { color:#fef9f0; font-size:1.2rem; margin-bottom:12px; }
.footer-brand p { opacity:0.7; font-size:0.9rem; line-height:1.6; }
.footer-col h4 { color:#fef9f0; font-size:0.95rem; margin-bottom:16px; letter-spacing:1px; }
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:8px; }
.footer-col a { color:#c9a96e; text-decoration:none; font-size:0.9rem; transition:0.2s; }
.footer-col a:hover { color:#fef9f0; }
.footer-bottom { border-top:1px solid rgba(200,169,110,0.2); margin-top:44px; padding-top:24px; text-align:center; font-size:0.85rem; opacity:0.6; color:#e8d5c0; }

/* 工具类 */
.text-accent { color:#a67c52; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#5a4a3a; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:40px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; align-items:center; gap:6px; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:72px; left:0; width:100%; background:#fef9f0; padding:24px; border-bottom:2px solid #e8d5c0; gap:16px; }
  .hero { min-height:60vh; }
  .hero h1 { font-size:2.2rem; }
}
@media (max-width: 480px) {
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .hero-buttons { flex-direction:column; }
  .hero h1 { font-size:1.8rem; }
  .section-title { font-size:1.6rem; }
}