*, *::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: #f8f0e6; color: #2d1b0e; }

/* 核心布局 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; }
.section:nth-child(even) { background:#efe4d6; }

/* 导航 — 竹简质感 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(248,240,230,0.92); backdrop-filter:blur(12px); border-bottom:2px solid #c4a882; }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:68px; max-width:1200px; margin:0 auto; padding:0 24px; }
.logo { display:flex; align-items:center; gap:8px; font-weight:700; font-size:1.2rem; text-decoration:none; color:#2d1b0e; letter-spacing:2px; }
.logo-icon { width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1rem; background:#b8452e; color:#f8f0e6; box-shadow:0 2px 8px rgba(184,69,46,0.3); }
.main-nav { display:flex; align-items:center; gap:24px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; color:#5a3e2b; transition:0.2s; padding:6px 0; border-bottom:2px solid transparent; }
.main-nav a:hover { border-bottom-color:#b8452e; color:#b8452e; }
.nav-cta { padding:8px 20px; border-radius:30px; color:#f8f0e6!important; font-weight:600; background:#b8452e; border-bottom:none!important; }
.nav-cta:hover { background:#9a3724; color:#f8f0e6!important; }
.menu-toggle { display:none; background:none; border:2px solid #2d1b0e; color:#2d1b0e; width:40px; height:40px; border-radius:8px; font-size:1.2rem; cursor:pointer; align-items:center; justify-content:center; }

/* 首页Hero — 水墨卷轴 */
.hero { min-height:70vh; display:flex; align-items:center; background: linear-gradient(135deg, #f8f0e6 0%, #e8d9c4 50%, #d4b896 100%); position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-40%; left:-20%; width:80%; height:80%; background: radial-gradient(circle, rgba(184,69,46,0.08) 0%, transparent 70%); pointer-events:none; }
.hero-content { max-width:720px; position:relative; z-index:1; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:600; padding:4px 14px; border-radius:20px; margin-bottom:16px; background:#b8452e; color:#f8f0e6; letter-spacing:2px; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; color:#2d1b0e; font-weight:800; letter-spacing:-1px; text-shadow:2px 2px 0 rgba(184,69,46,0.1); }
.hero p { font-size:1.1rem; opacity:0.8; max-width:560px; margin-bottom:32px; color:#5a3e2b; line-height:1.7; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { border-radius:12px; overflow:hidden; box-shadow:0 12px 40px rgba(45,27,14,0.15); border:4px solid #c4a882; }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 — 陶土质感 */
.btn { display:inline-flex; align-items:center; gap:8px; padding:12px 28px; border-radius:30px; font-weight:600; cursor:pointer; border:none; text-decoration:none; transition:0.25s; font-size:0.95rem; }
.btn-primary { color:#f8f0e6; background:#b8452e; box-shadow:0 4px 12px rgba(184,69,46,0.3); }
.btn-primary:hover { background:#9a3724; transform:translateY(-2px); box-shadow:0 6px 20px rgba(184,69,46,0.4); }
.btn-outline { background:transparent; border:2px solid #b8452e; color:#b8452e; }
.btn-outline:hover { background:#b8452e; color:#f8f0e6; }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.75rem; font-weight:600; letter-spacing:3px; margin-bottom:12px; color:#b8452e; text-transform:uppercase; border-left:3px solid #b8452e; padding-left:10px; }
.section-title { font-size:2.2rem; margin-bottom:14px; color:#2d1b0e; font-weight:800; letter-spacing:-0.5px; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color:#5a3e2b; line-height:1.6; }

/* 卡片网格 — 仿古书页 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:24px; }
.category-card { border-radius:12px; padding:28px; border:1px solid #d4b896; background:#fdfaf5; transition:0.3s; position:relative; overflow:hidden; }
.category-card::after { content:''; position:absolute; top:0; left:0; width:4px; height:100%; background:#b8452e; opacity:0; transition:0.3s; }
.category-card:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(45,27,14,0.12); border-color:#b8452e; }
.category-card:hover::after { opacity:1; }
.card-icon { width:48px; height:48px; border-radius:12px; display:flex; align-items:center; justify-content:center; margin-bottom:16px; font-size:1.3rem; background:#efe4d6; color:#b8452e; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#b8452e; display:inline-flex; align-items:center; gap:4px; }
.card-link:hover { gap:8px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.feature-image { border-radius:12px; overflow:hidden; border:3px solid #d4b896; box-shadow:0 8px 24px rgba(45,27,14,0.1); }
.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; color:#5a3e2b; border-bottom:1px dashed #d4b896; }
.feature-list li:last-child { border-bottom:none; }
.feature-list li::before { content:'✦'; font-weight:700; color:#b8452e; font-size:1.1rem; }

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { padding:28px 24px; border-radius:12px; border:1px solid #d4b896; background:#fdfaf5; }
.stat-number { font-size:2.6rem; font-weight:800; color:#b8452e; line-height:1; }
.stat-label { font-size:0.9rem; opacity:0.7; margin-top:8px; color:#5a3e2b; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.content-wall-item { border-radius:12px; overflow:hidden; border:1px solid #d4b896; background:#fdfaf5; transition:0.3s; }
.content-wall-item:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(45,27,14,0.12); }
.content-wall-item img { width:100%; height:200px; object-fit:cover; border-bottom:3px solid #b8452e; }
.content-wall-body { padding:20px; }
.content-wall-body h3 { color:#2d1b0e; margin-bottom:6px; }
.content-wall-body p { color:#5a3e2b; font-size:0.9rem; }

/* FAQ — 手风琴卷轴 */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid #d4b896; border-radius:10px; margin-bottom:8px; overflow:hidden; cursor:pointer; background:#fdfaf5; transition:0.2s; }
.faq-item:hover { border-color:#b8452e; }
.faq-item .faq-question { padding:16px 20px; font-weight:600; display:flex; justify-content:space-between; color:#2d1b0e; background:#efe4d6; }
.faq-item .faq-question::after { content:'+'; font-size:1.2rem; color:#b8452e; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 20px 16px; display:none; opacity:0.8; color:#5a3e2b; line-height:1.6; }
.faq-item.open .faq-answer { display:block; padding-top:12px; }

/* CTA横幅 */
.cta-banner { padding:56px 24px; text-align:center; border-radius:12px; color:#f8f0e6; background: linear-gradient(135deg, #b8452e 0%, #9a3724 100%); box-shadow:0 8px 32px rgba(184,69,46,0.3); }
.cta-banner h2 { color:#f8f0e6; font-weight:800; font-size:2rem; }
.cta-banner .section-desc { color:rgba(248,240,230,0.8); margin-left:auto; margin-right:auto; }
.cta-banner .btn-primary { background:#f8f0e6; color:#b8452e; box-shadow:0 4px 12px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { background:#fff; }

/* 页脚 — 大地色系 */
.site-footer { padding:56px 0 28px; background:#2d1b0e; color:#d4b896; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand .logo { color:#f8f0e6; }
.footer-brand p { opacity:0.7; font-size:0.9rem; margin-top:12px; line-height:1.6; }
.footer-col h4 { color:#f8f0e6; margin-bottom:12px; font-weight:600; font-size:1rem; }
.footer-col a { display:block; color:#d4b896; text-decoration:none; padding:4px 0; font-size:0.9rem; opacity:0.8; transition:0.2s; }
.footer-col a:hover { opacity:1; color:#f8f0e6; padding-left:4px; }
.footer-bottom { border-top:1px solid rgba(212,184,150,0.15); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; opacity:0.6; }

/* 工具类 */
.text-accent { color:#b8452e; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#5a3e2b; line-height:1.6; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:32px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:#f8f0e6; padding:20px; border-bottom:2px solid #c4a882; gap:12px; }
  .hero h1 { font-size:2.4rem; }
}
@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:2rem; }
}