*, *::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; color:#2d2a24; }

/* 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:#fdf7ed; }

/* 导航 — 固定顶部 */
.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:1px solid #e8dcc8; }
.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:1.25rem; text-decoration:none; color:#2d2a24; letter-spacing:-0.5px; }
.logo-icon { width:38px; height:38px; border-radius:50%; background:linear-gradient(135deg,#f7b731,#f5a623); display:flex; align-items:center; justify-content:center; font-size:1.1rem; color:#fff; box-shadow:0 2px 8px rgba(247,183,49,0.3); }
.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:#5c5346; transition:0.3s; position:relative; letter-spacing:0.3px; }
.main-nav a::after { content:''; position:absolute; left:0; bottom:-4px; width:0; height:2px; background:#f7b731; transition:0.3s; }
.main-nav a:hover::after { width:100%; }
.main-nav a:hover { color:#2d2a24; }
.nav-cta { padding:8px 22px; border-radius:30px; color:#fff!important; font-weight:600; background:linear-gradient(135deg,#f7b731,#e89b1e); box-shadow:0 4px 12px rgba(247,183,49,0.25); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; background:none; border:none; font-size:1.4rem; cursor:pointer; color:#2d2a24; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; position:relative; background:linear-gradient(180deg,#fef9f0 0%,#fdf1e0 100%); overflow:hidden; }
.hero::before { content:''; position:absolute; top:-120px; right:-80px; width:400px; height:400px; border-radius:50%; background:radial-gradient(circle,rgba(247,183,49,0.12),transparent 70%); pointer-events:none; }
.hero::after { content:''; position:absolute; bottom:-60px; left:-60px; width:300px; height:300px; border-radius:50%; background:radial-gradient(circle,rgba(232,155,30,0.08),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:5px 16px; border-radius:30px; margin-bottom:18px; background:rgba(247,183,49,0.15); color:#b8860b; letter-spacing:1px; }
.hero h1 { font-size:3rem; line-height:1.15; margin-bottom:20px; font-weight:800; letter-spacing:-1px; color:#1a1814; }
.hero h1 span { background:linear-gradient(135deg,#f7b731,#d48a1a); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:1.1rem; opacity:0.65; max-width:560px; margin-bottom:36px; line-height:1.7; color:#5c5346; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 12px 40px rgba(0,0,0,0.06); border:1px solid #e8dcc8; }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:8px; padding:12px 30px; border-radius:30px; font-weight:600; cursor:pointer; border:none; text-decoration:none; transition:0.3s; font-size:0.9rem; }
.btn-primary { color:#fff; background:linear-gradient(135deg,#f7b731,#e89b1e); box-shadow:0 4px 14px rgba(247,183,49,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(247,183,49,0.4); }
.btn-outline { background:transparent; border:1.5px solid #d4c5ae; color:#5c5346; }
.btn-outline:hover { border-color:#f7b731; color:#2d2a24; background:rgba(247,183,49,0.05); }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.75rem; font-weight:600; letter-spacing:2.5px; margin-bottom:12px; color:#b8860b; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:700; letter-spacing:-0.5px; color:#1a1814; }
.section-desc { max-width:600px; opacity:0.65; margin-bottom:40px; line-height:1.7; color:#5c5346; }

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:28px; }
.category-card { border-radius:16px; padding:32px; border:1px solid #e8dcc8; transition:0.35s; background:#fffdf8; position:relative; overflow:hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:3px; background:linear-gradient(90deg,#f7b731,#e89b1e); transform:scaleX(0); transform-origin:left; transition:0.4s; }
.category-card:hover::before { transform:scaleX(1); }
.category-card:hover { transform:translateY(-4px); box-shadow:0 8px 28px rgba(0,0,0,0.06); border-color:#d4c5ae; }
.card-icon { width:48px; height:48px; border-radius:12px; background:linear-gradient(135deg,#fdf1e0,#f7e5cc); display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.3rem; color:#b8860b; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#f7b731; transition:0.2s; display:inline-flex; align-items:center; gap:6px; }
.card-link:hover { color:#d48a1a; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; box-shadow:0 8px 24px rgba(0,0,0,0.04); border:1px solid #e8dcc8; }
.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:0.95rem; color:#4a4238; }
.feature-list li::before { content:'✓'; font-weight:700; color:#f7b731; 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 20px; border-radius:16px; border:1px solid #e8dcc8; background:#fffdf8; transition:0.3s; }
.stat-item:hover { border-color:#d4c5ae; box-shadow:0 4px 16px rgba(0,0,0,0.04); }
.stat-number { font-size:2.4rem; font-weight:800; color:#1a1814; background:linear-gradient(135deg,#f7b731,#d48a1a); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:6px; color:#5c5346; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.content-wall-item { border-radius:16px; overflow:hidden; border:1px solid #e8dcc8; transition:0.35s; background:#fffdf8; }
.content-wall-item:hover { transform:translateY(-4px); box-shadow:0 8px 28px rgba(0,0,0,0.06); border-color:#d4c5ae; }
.content-wall-item img { width:100%; height:200px; object-fit:cover; display:block; }
.content-wall-body { padding:22px; }
.content-wall-body h3 { font-size:1.1rem; margin-bottom:8px; color:#1a1814; }
.content-wall-body p { font-size:0.9rem; opacity:0.65; color:#5c5346; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid #e8dcc8; border-radius:12px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fffdf8; transition:0.3s; }
.faq-item:hover { border-color:#d4c5ae; }
.faq-item .faq-question { padding:18px 22px; font-weight:600; display:flex; justify-content:space-between; color:#2d2a24; font-size:0.95rem; }
.faq-item .faq-question::after { content:'+'; font-size:1.2rem; color:#f7b731; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 22px 18px; display:none; opacity:0.7; color:#5c5346; line-height:1.6; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:60px 24px; text-align:center; border-radius:20px; background:linear-gradient(135deg,#f7b731,#d48a1a); color:#fff; position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-50%; right:-30%; width:60%; height:200%; background:radial-gradient(circle,rgba(255,255,255,0.08),transparent 70%); pointer-events:none; }
.cta-banner h2 { color:#fff; font-size:2rem; margin-bottom:12px; }
.cta-banner p { color:rgba(255,255,255,0.85); margin-bottom:24px; }
.cta-banner .btn-primary { background:#fff; color:#b8860b; box-shadow:0 4px 14px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(0,0,0,0.15); }

/* 页脚 */
.site-footer { padding:60px 0 28px; background:#1a1814; color:#d4c5ae; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand .logo { color:#f7b731; margin-bottom:16px; }
.footer-brand p { opacity:0.6; font-size:0.9rem; line-height:1.6; }
.footer-col h4 { color:#f7b731; font-size:0.9rem; margin-bottom:16px; font-weight:600; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul li a { color:#d4c5ae; text-decoration:none; font-size:0.85rem; opacity:0.7; transition:0.2s; }
.footer-col ul li a:hover { opacity:1; color:#f7b731; }
.footer-bottom { border-top:1px solid rgba(212,197,174,0.15); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; opacity:0.5; }

/* 工具类 */
.text-accent { color:#f7b731; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.65; color:#5c5346; }
.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; justify-content:center; width:40px; height:40px; border-radius:10px; background:rgba(247,183,49,0.1); }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:#fef9f0; padding:24px; border-bottom:1px solid #e8dcc8; gap:16px; }
  .hero h1 { font-size:2.2rem; }
  .section-title { font-size:1.7rem; }
}
@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; }
  .stat-number { font-size:2rem; }
}