/* 基础重置 */
*, *::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:#faf7f2; color:#3d322c; line-height:1.6; -webkit-font-smoothing:antialiased; }

/* 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:#f3efe8; }
.section:nth-child(even)::before { content:''; position:absolute; top:0; left:50%; transform:translateX(-50%); width:200px; height:3px; background:linear-gradient(90deg,transparent,#c9a96e,transparent); border-radius:2px; }

/* 导航 — 固定顶部 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(250,247,242,0.92); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); border-bottom:1px solid #e8e2d8; transition:box-shadow 0.3s; }
.site-header.scrolled { box-shadow:0 2px 24px rgba(61,50,44,0.06); }
.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:1.15rem; text-decoration:none; color:#3d322c; letter-spacing:-0.01em; }
.logo-icon { width:36px; height:36px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:1.1rem; background:linear-gradient(135deg,#c17e60,#d4956b); color:#fff; box-shadow:0 2px 8px rgba(193,126,96,0.25); }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.88rem; font-weight:500; color:#5c4f45; transition:color 0.25s; position:relative; letter-spacing:0.01em; }
.main-nav a:hover { color:#c17e60; }
.main-nav a::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px; background:#c17e60; border-radius:1px; transition:width 0.3s cubic-bezier(0.25,0.8,0.25,1.2); }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:9px 22px; border-radius:24px; color:#fff!important; font-weight:600; background:linear-gradient(135deg,#c17e60,#b86e52); box-shadow:0 3px 12px rgba(193,126,96,0.3); transition:all 0.3s!important; letter-spacing:0.02em; }
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(193,126,96,0.4); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; flex-direction:column; gap:5px; cursor:pointer; padding:8px; background:none; border:none; }
.menu-toggle span { display:block; width:24px; height:2.5px; background:#3d322c; border-radius:2px; transition:0.3s; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; background:linear-gradient(180deg,#faf7f2 0%,#f5f0e8 40%,#f3efe8 100%); position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-120px; right:-80px; width:500px; height:500px; border-radius:50%; background:radial-gradient(circle,rgba(201,169,110,0.12) 0%,transparent 70%); pointer-events:none; }
.hero::after { content:''; position:absolute; bottom:-60px; left:-100px; width:400px; height:400px; border-radius:50%; background:radial-gradient(circle,rgba(138,154,131,0.08) 0%,transparent 70%); pointer-events:none; }
.hero .container { display:flex; align-items:center; gap:48px; position:relative; z-index:1; }
.hero-content { flex:1; max-width:720px; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:600; padding:5px 16px; border-radius:20px; margin-bottom:18px; background:#f0e8db; color:#8a6d4b; letter-spacing:0.06em; text-transform:uppercase; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; font-weight:800; color:#3d322c; letter-spacing:-0.02em; }
.hero h1 .highlight { color:#c17e60; position:relative; display:inline-block; }
.hero h1 .highlight::after { content:''; position:absolute; bottom:4px; left:0; width:100%; height:8px; background:rgba(201,169,110,0.3); border-radius:4px; z-index:-1; }
.hero p { font-size:1.1rem; opacity:0.65; max-width:560px; margin-bottom:32px; color:#5c4f45; line-height:1.7; }
.hero-buttons { display:flex; gap:14px; flex-wrap:wrap; }
.hero-image { flex:0 0 420px; border-radius:20px; overflow:hidden; box-shadow:0 20px 50px rgba(61,50,44,0.12); position:relative; }
.hero-image::after { content:''; position:absolute; inset:0; border-radius:20px; border:1px solid rgba(255,255,255,0.5); pointer-events:none; }
.hero-image img { width:100%; height:auto; display:block; border-radius:20px; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:8px; padding:13px 30px; border-radius:26px; font-weight:600; cursor:pointer; border:none; text-decoration:none; transition:all 0.3s cubic-bezier(0.25,0.8,0.25,1.2); font-size:0.95rem; letter-spacing:0.01em; }
.btn-primary { color:#fff; background:linear-gradient(135deg,#c17e60,#b86e52); box-shadow:0 4px 14px rgba(193,126,96,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(193,126,96,0.4); }
.btn-outline { background:transparent; border:1.8px solid #c17e60; color:#c17e60; }
.btn-outline:hover { background:#c17e60; color:#fff; transform:translateY(-2px); box-shadow:0 6px 20px rgba(193,126,96,0.25); }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.78rem; font-weight:700; letter-spacing:3px; margin-bottom:12px; color:#8a9a83; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:800; color:#3d322c; letter-spacing:-0.01em; line-height:1.25; }
.section-desc { max-width:600px; opacity:0.65; margin-bottom:40px; color:#5c4f45; font-size:1.05rem; line-height:1.7; }

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:24px; }
.category-card { border-radius:16px; padding:30px 26px; border:1px solid #e8e2d8; transition:all 0.35s cubic-bezier(0.25,0.8,0.25,1.2); background:#fff; position:relative; overflow:hidden; cursor:pointer; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:4px; background:linear-gradient(90deg,#c17e60,#c9a96e,#8a9a83); transform:scaleX(0); transform-origin:left; transition:transform 0.4s cubic-bezier(0.25,0.8,0.25,1.2); border-radius:0 0 4px 4px; }
.category-card:hover::before { transform:scaleX(1); }
.category-card:hover { transform:translateY(-6px); box-shadow:0 16px 40px rgba(61,50,44,0.1); border-color:transparent; }
.category-card h3 { font-size:1.15rem; font-weight:700; color:#3d322c; margin-bottom:8px; }
.category-card p { font-size:0.9rem; color:#5c4f45; opacity:0.7; line-height:1.6; }
.card-icon { width:48px; height:48px; border-radius:12px; display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.3rem; background:#faf5ef; color:#c17e60; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#c17e60; display:inline-flex; align-items:center; gap:6px; margin-top:14px; transition:gap 0.3s; }
.card-link:hover { gap:10px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; box-shadow:0 12px 36px rgba(61,50,44,0.1); position:relative; }
.feature-image::after { content:''; position:absolute; inset:0; border-radius:16px; border:1px solid rgba(255,255,255,0.4); pointer-events:none; }
.feature-image img { width:100%; height:auto; display:block; border-radius:16px; }
.feature-text { }
.feature-text h3 { font-size:1.6rem; font-weight:700; color:#3d322c; margin-bottom:12px; }
.feature-text p { color:#5c4f45; opacity:0.7; line-height:1.7; margin-bottom:18px; }
.feature-list { list-style:none; }
.feature-list li { padding:8px 0; display:flex; align-items:center; gap:10px; font-size:0.95rem; color:#3d322c; }
.feature-list li::before { content:'✓'; font-weight:700; color:#8a9a83; font-size:1rem; flex-shrink:0; width:22px; height:22px; display:flex; align-items:center; justify-content:center; background:#eef3ec; border-radius:50%; }

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; }
.stat-item { padding:28px 20px; border-radius:16px; border:1px solid #e8e2d8; background:#fff; transition:all 0.3s; }
.stat-item:hover { transform:translateY(-4px); box-shadow:0 8px 28px rgba(61,50,44,0.08); }
.stat-number { font-size:2.4rem; font-weight:800; color:#c17e60; letter-spacing:-0.02em; }
.stat-label { font-size:0.9rem; opacity:0.55; margin-top:8px; color:#5c4f45; font-weight:500; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.content-wall-item { border-radius:16px; overflow:hidden; border:1px solid #e8e2d8; transition:all 0.35s cubic-bezier(0.25,0.8,0.25,1.2); background:#fff; }
.content-wall-item:hover { transform:translateY(-6px); box-shadow:0 16px 40px rgba(61,50,44,0.1); }
.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; font-weight:700; color:#3d322c; margin-bottom:6px; }
.content-wall-body p { font-size:0.88rem; color:#5c4f45; opacity:0.65; line-height:1.6; }
.content-wall-body .tag { display:inline-block; font-size:0.75rem; font-weight:600; padding:3px 10px; border-radius:12px; background:#faf5ef; color:#c17e60; margin-bottom:8px; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid #e8e2d8; border-radius:12px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:all 0.3s; }
.faq-item:hover { border-color:#d5cdc0; }
.faq-item .faq-question { padding:18px 22px; font-weight:600; display:flex; justify-content:space-between; align-items:center; color:#3d322c; font-size:1rem; user-select:none; }
.faq-item .faq-question::after { content:'+'; font-size:1.3rem; font-weight:300; color:#c17e60; transition:transform 0.3s; flex-shrink:0; margin-left:12px; }
.faq-item.open .faq-question::after { transform:rotate(45deg); }
.faq-item .faq-answer { padding:0 22px 18px; display:none; opacity:0.65; color:#5c4f45; line-height:1.7; font-size:0.95rem; }
.faq-item.open .faq-answer { display:block; animation:fadeIn 0.4s ease; }
.faq-item.open { border-color:#c17e60; box-shadow:0 4px 16px rgba(193,126,96,0.08); }

@keyframes fadeIn {
  from { opacity:0; transform:translateY(-8px); }
  to { opacity:0.65; transform:translateY(0); }
}

/* CTA横幅 */
.cta-banner { padding:60px 24px; text-align:center; border-radius:20px; color:#fff; background:linear-gradient(135deg,#c17e60,#a05a40); position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-60px; right:-60px; width:250px; height:250px; border-radius:50%; background:rgba(255,255,255,0.06); pointer-events:none; }
.cta-banner::after { content:''; position:absolute; bottom:-40px; left:-40px; width:180px; height:180px; border-radius:50%; background:rgba(255,255,255,0.04); pointer-events:none; }
.cta-banner h2 { color:#fff; font-size:2rem; font-weight:800; margin-bottom:12px; position:relative; z-index:1; }
.cta-banner p { color:rgba(255,255,255,0.85); margin-bottom:28px; position:relative; z-index:1; font-size:1.05rem; }
.cta-banner .btn-primary { background:#fff; color:#c17e60; box-shadow:0 6px 20px rgba(0,0,0,0.15); position:relative; z-index:1; }
.cta-banner .btn-primary:hover { background:#faf7f2; box-shadow:0 10px 28px rgba(0,0,0,0.2); }

/* 页脚 */
.site-footer { padding:56px 0 28px; background:#ede6db; color:#3d322c; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand .logo { margin-bottom:12px; }
.footer-brand p { opacity:0.6; font-size:0.9rem; line-height:1.7; color:#5c4f45; }
.footer-col { }
.footer-col h4 { font-size:0.95rem; font-weight:700; margin-bottom:16px; color:#3d322c; letter-spacing:0.02em; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:10px; }
.footer-col ul li a { text-decoration:none; color:#5c4f45; font-size:0.88rem; opacity:0.7; transition:all 0.2s; }
.footer-col ul li a:hover { opacity:1; color:#c17e60; }
.footer-bottom { border-top:1px solid rgba(61,50,44,0.1); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; color:#5c4f45; opacity:0.6; }

/* 工具类 */
.text-accent { color:#c17e60; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.6; font-size:0.9rem; color:#5c4f45; text-align:center; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .hero .container { flex-direction:column; gap:32px; }
  .hero { min-height:auto; padding:100px 0 60px; text-align:center; }
  .hero-content { max-width:100%; }
  .hero h1 { font-size:2.2rem; }
  .hero p { max-width:100%; margin-left:auto; margin-right:auto; }
  .hero-buttons { justify-content:center; }
  .hero-image { flex:0 0 auto; width:100%; max-width:400px; margin:0 auto; }
  .feature-block { grid-template-columns:1fr; gap:36px; }
  .feature-image { order:-1; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; gap:28px; }
  .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:#faf7f2; padding:24px; gap:16px; border-bottom:1px solid #e8e2d8; box-shadow:0 12px 32px rgba(61,50,44,0.08); }
  .main-nav.open a { font-size:1rem; padding:8px 0; }
  .section { padding:56px 0; }
  .section-title { font-size:1.7rem; }
  .cta-banner { padding:40px 20px; }
  .cta-banner h2 { font-size:1.5rem; }
}

@media (max-width: 480px) {
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:24px; }
  .hero-buttons { flex-direction:column; align-items:center; }
  .hero h1 { font-size:1.8rem; }
  .hero-image { max-width:100%; border-radius:14px; }
  .hero-image img { border-radius:14px; }
  .section-title { font-size:1.5rem; }
  .btn { width:100%; justify-content:center; }
  .category-card { padding:22px 18px; }
  .stat-item { padding:20px 14px; }
  .stat-number { font-size:1.8rem; }
  .header-inner { padding:0 16px; }
  .container { padding:0 16px; }
}