*, *::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:#f5f0eb; color:#2c3e4f; }

/* 核心布局 — 必须居中 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#ede6dd; }

/* 导航 — 固定顶部 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(245,240,235,0.92); backdrop-filter:blur(12px); border-bottom:1px solid #d4c9bc; }
.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:10px; font-weight:700; font-size:1.3rem; text-decoration:none; color:#2c3e4f; letter-spacing:1px; }
.logo-icon { width:40px; height:40px; border-radius:50%; background:linear-gradient(135deg,#e8a87c,#d4745a); display:flex; align-items:center; justify-content:center; font-size:1.2rem; color:#fff; box-shadow:0 2px 10px rgba(212,116,90,0.3); }
.main-nav { display:flex; align-items:center; gap:32px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; color:#5a6b7a; transition:0.3s; letter-spacing:0.5px; }
.main-nav a:hover { color:#d4745a; }
.nav-cta { padding:10px 24px; border-radius:30px; background:linear-gradient(135deg,#e8a87c,#d4745a); color:#fff!important; font-weight:600; box-shadow:0 4px 12px rgba(212,116,90,0.25); }
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(212,116,90,0.35); }
.menu-toggle { display:none; }

/* 首页Hero */
.hero { min-height:80vh; display:flex; align-items:center; position:relative; background:linear-gradient(135deg,#f5f0eb 0%,#ede6dd 50%,#e8d9cd 100%); }
.hero::before { content:''; position:absolute; top:-50%; right:-20%; width:600px; height:600px; background:radial-gradient(circle,rgba(232,168,124,0.15),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; letter-spacing:3px; padding:6px 18px; border-radius:30px; background:rgba(212,116,90,0.12); color:#d4745a; margin-bottom:20px; text-transform:uppercase; }
.hero h1 { font-size:3.4rem; line-height:1.15; margin-bottom:24px; color:#2c3e4f; font-weight:800; letter-spacing:-1px; }
.hero h1 span { color:#d4745a; }
.hero p { font-size:1.15rem; opacity:0.65; max-width:520px; margin-bottom:36px; line-height:1.7; }
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 20px 60px rgba(44,62,79,0.1); }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:10px; padding:14px 32px; border-radius:30px; font-weight:600; cursor:pointer; border:none; text-decoration:none; transition:0.3s; font-size:0.95rem; }
.btn-primary { background:linear-gradient(135deg,#e8a87c,#d4745a); color:#fff; box-shadow:0 4px 16px rgba(212,116,90,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(212,116,90,0.4); }
.btn-outline { background:transparent; border:2px solid #d4745a; color:#d4745a; }
.btn-outline:hover { background:rgba(212,116,90,0.08); }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.75rem; font-weight:600; letter-spacing:3px; padding:4px 14px; border-radius:20px; background:rgba(212,116,90,0.1); color:#d4745a; margin-bottom:14px; text-transform:uppercase; }
.section-title { font-size:2.4rem; margin-bottom:16px; color:#2c3e4f; font-weight:700; letter-spacing:-0.5px; line-height:1.2; }
.section-desc { max-width:600px; opacity:0.6; margin-bottom:44px; line-height:1.7; font-size:1.05rem; }

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.category-card { border-radius:16px; padding:32px; background:#fff; border:1px solid #e0d6cb; transition:0.3s; position:relative; overflow:hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:4px; background:linear-gradient(90deg,#e8a87c,#d4745a); opacity:0; transition:0.3s; }
.category-card:hover { transform:translateY(-6px); box-shadow:0 12px 40px rgba(44,62,79,0.08); border-color:#d4745a; }
.category-card:hover::before { opacity:1; }
.card-icon { width:52px; height:52px; border-radius:14px; background:linear-gradient(135deg,#f5f0eb,#ede6dd); display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.5rem; color:#d4745a; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#d4745a; display:inline-flex; align-items:center; gap:6px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.feature-image { border-radius:20px; overflow:hidden; box-shadow:0 12px 40px rgba(44,62,79,0.08); }
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-list { list-style:none; margin-top:20px; }
.feature-list li { padding:10px 0; display:flex; align-items:center; gap:12px; font-size:1.05rem; color:#4a5b6a; }
.feature-list li::before { content:'✦'; font-weight:700; color:#d4745a; font-size:1.2rem; }

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:28px; text-align:center; }
.stat-item { padding:32px 20px; border-radius:16px; background:#fff; border:1px solid #e0d6cb; transition:0.3s; }
.stat-item:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(44,62,79,0.06); }
.stat-number { font-size:2.6rem; font-weight:800; background:linear-gradient(135deg,#e8a87c,#d4745a); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:0.9rem; opacity:0.55; margin-top:8px; color:#4a5b6a; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { border-radius:16px; overflow:hidden; background:#fff; border:1px solid #e0d6cb; transition:0.3s; }
.content-wall-item:hover { transform:translateY(-6px); box-shadow:0 12px 40px rgba(44,62,79,0.08); }
.content-wall-item img { width:100%; height:220px; object-fit:cover; }
.content-wall-body { padding:24px; }
.content-wall-body h3 { font-size:1.2rem; margin-bottom:8px; color:#2c3e4f; }
.content-wall-body p { font-size:0.9rem; opacity:0.6; line-height:1.6; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid #e0d6cb; border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:0.2s; }
.faq-item:hover { border-color:#d4745a; }
.faq-item .faq-question { padding:18px 24px; font-weight:600; display:flex; justify-content:space-between; align-items:center; color:#2c3e4f; font-size:1.05rem; }
.faq-item .faq-question::after { content:'+'; font-size:1.4rem; color:#d4745a; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 24px 20px; display:none; opacity:0.65; line-height:1.7; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:64px 32px; text-align:center; border-radius:20px; background:linear-gradient(135deg,#e8a87c,#d4745a); color:#fff; position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-30%; right:-10%; width:400px; height:400px; background:radial-gradient(circle,rgba(255,255,255,0.1),transparent 70%); }
.cta-banner h2 { color:#fff; font-size:2.4rem; margin-bottom:16px; position:relative; }
.cta-banner p { color:rgba(255,255,255,0.85); margin-bottom:28px; position:relative; }
.cta-banner .btn-primary { background:#fff; color:#d4745a; box-shadow:0 4px 16px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,0.15); }

/* 页脚 */
.site-footer { padding:64px 0 32px; background:#2c3e4f; color:rgba(255,255,255,0.8); }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-brand .logo { color:#fff; }
.footer-brand p { margin-top:16px; opacity:0.6; line-height:1.7; font-size:0.9rem; }
.footer-col { }
.footer-col h4 { color:#fff; font-size:1rem; margin-bottom:16px; font-weight:600; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:10px; }
.footer-col ul li a { color:rgba(255,255,255,0.6); text-decoration:none; font-size:0.9rem; transition:0.2s; }
.footer-col ul li a:hover { color:#e8a87c; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.08); margin-top:48px; padding-top:24px; text-align:center; font-size:0.85rem; opacity:0.5; }

/* 工具类 */
.text-accent { color:#d4745a; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.6; line-height:1.8; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 装饰性元素 */
.section::after { content:'⚡'; position:absolute; bottom:20px; right:40px; font-size:2rem; opacity:0.05; pointer-events:none; }

/* ⚠️ 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; gap:32px; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; background:none; border:none; font-size:1.5rem; color:#2c3e4f; cursor:pointer; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:#f5f0eb; padding:24px; border-bottom:1px solid #d4c9bc; gap:16px; }
  .hero h1 { font-size:2.4rem; }
  .section-title { font-size:1.8rem; }
  .cta-banner h2 { font-size:1.8rem; }
}
@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; }
  .hero { min-height:60vh; }
}