/* 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:#faf8f5; color:#3d2e28; line-height:1.6; }

/* 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:#f3efea; }

/* 导航 — 固定顶部 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(250,248,245,0.9); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); border-bottom:1px solid #e8d5c4; }
.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:800; font-size:1.3rem; text-decoration:none; color:#3d2e28; letter-spacing:-0.5px; }
.logo-icon { width:38px; height:38px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:1.1rem; background:linear-gradient(135deg,#c4735a,#d4957f); color:#fff; font-weight:700; box-shadow:0 2px 8px rgba(196,115,90,0.25); }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:550; color:#5c4a3f; transition:0.25s; position:relative; }
.main-nav a:hover { color:#c4735a; }
.main-nav a::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px; background:#c4735a; border-radius:2px; transition:0.3s; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:8px 20px; border-radius:24px; color:#fff!important; font-weight:650; background:linear-gradient(135deg,#c4735a,#d4957f); box-shadow:0 3px 12px rgba(196,115,90,0.3); }
.nav-cta::after { display:none!important; }
.nav-cta:hover { transform:translateY(-1px); box-shadow:0 6px 18px rgba(196,115,90,0.35); }
.menu-toggle { display:none; background:none; border:none; cursor:pointer; width:32px; height:32px; flex-direction:column; justify-content:center; gap:5px; }
.menu-toggle span { display:block; width:24px; height:2.5px; background:#3d2e28; border-radius:3px; transition:0.25s; }

/* 首页Hero */
.hero { min-height:70vh; display:flex; align-items:center; padding-top:68px; position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-120px; right:-80px; width:450px; height:450px; border-radius:50%; background:radial-gradient(circle,rgba(122,155,140,0.15) 0%,transparent 70%); pointer-events:none; }
.hero::after { content:''; position:absolute; bottom:-60px; left:-40px; width:300px; height:300px; border-radius:50%; background:radial-gradient(circle,rgba(196,115,90,0.12) 0%,transparent 70%); pointer-events:none; }
.hero .container { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; position:relative; z-index:1; }
.hero-content { max-width:720px; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:700; padding:5px 16px; border-radius:20px; margin-bottom:18px; background:#e8d5c4; color:#c4735a; letter-spacing:1.5px; text-transform:uppercase; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:22px; font-weight:800; letter-spacing:-1px; color:#3d2e28; }
.hero h1 span { background:linear-gradient(135deg,#c4735a,#7a9b8c); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:1.1rem; opacity:0.75; max-width:560px; margin-bottom:34px; color:#5c4a3f; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 20px 50px rgba(61,46,40,0.12); transform:rotate(-1deg); transition:0.3s; }
.hero-image:hover { transform:rotate(0deg) scale(1.01); }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:8px; padding:13px 30px; border-radius:26px; font-weight:650; cursor:pointer; border:none; text-decoration:none; transition:0.25s; font-size:0.95rem; }
.btn-primary { color:#fff; background:linear-gradient(135deg,#c4735a,#b8634a); box-shadow:0 4px 16px rgba(196,115,90,0.35); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(196,115,90,0.4); }
.btn-outline { background:transparent; border:2px solid #c4735a; color:#c4735a; }
.btn-outline:hover { background:#c4735a; color:#fff; }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.78rem; font-weight:700; letter-spacing:2.5px; margin-bottom:12px; color:#7a9b8c; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:750; letter-spacing:-0.5px; color:#3d2e28; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color:#5c4a3f; 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; border:1.5px solid #e8d5c4; background:#fff; transition:0.3s; position:relative; overflow:hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:4px; height:40px; background:#c4735a; border-radius:0 0 4px 0; transition:0.3s; }
.category-card:hover { transform:translateY(-4px); box-shadow:0 12px 32px rgba(61,46,40,0.1); border-color:#d4957f; }
.category-card:hover::before { height:60px; }
.card-icon { width:50px; height:50px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.4rem; background:#f3efea; color:#c4735a; }
.card-link { font-weight:650; font-size:0.85rem; text-decoration:none; color:#c4735a; display:inline-flex; align-items:center; gap:6px; transition:0.2s; }
.card-link:hover { gap:10px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.feature-image { border-radius:20px; overflow:hidden; box-shadow:0 16px 40px rgba(61,46,40,0.1); }
.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:#5c4a3f; font-size:0.95rem; }
.feature-list li::before { content:'✓'; font-weight:700; color:#7a9b8c; font-size:1.1rem; background:#e8f0ec; width:26px; height:26px; border-radius:50%; display:flex; align-items:center; justify-content:center; flex-shrink:0; }

/* 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:1.5px solid #e8d5c4; background:#fff; transition:0.25s; }
.stat-item:hover { border-color:#c4735a; box-shadow:0 8px 24px rgba(196,115,90,0.1); }
.stat-number { font-size:2.4rem; font-weight:800; color:#c4735a; letter-spacing:-1px; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:6px; color:#5c4a3f; }

/* 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:1.5px solid #e8d5c4; background:#fff; transition:0.3s; }
.content-wall-item:hover { transform:translateY(-4px); box-shadow:0 12px 32px rgba(61,46,40,0.1); }
.content-wall-item img { width:100%; height:200px; object-fit:cover; display:block; }
.content-wall-body { padding:22px; }
.content-wall-body h3 { font-size:1.05rem; margin-bottom:6px; color:#3d2e28; }
.content-wall-body p { font-size:0.85rem; opacity:0.7; color:#5c4a3f; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1.5px solid #e8d5c4; border-radius:12px; margin-bottom:8px; overflow:hidden; cursor:pointer; background:#fff; transition:0.2s; }
.faq-item:hover { border-color:#d4957f; }
.faq-item .faq-question { padding:16px 20px; font-weight:650; display:flex; justify-content:space-between; align-items:center; color:#3d2e28; }
.faq-item .faq-question::after { content:'+'; font-size:1.3rem; color:#c4735a; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 20px 16px; display:none; opacity:0.7; color:#5c4a3f; line-height:1.7; }
.faq-item.open .faq-answer { display:block; }
.faq-item.open { border-color:#c4735a; box-shadow:0 4px 16px rgba(196,115,90,0.08); }

/* CTA横幅 */
.cta-banner { padding:60px 24px; text-align:center; border-radius:20px; color:#fff; background:linear-gradient(135deg,#c4735a,#7a9b8c); position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-60px; right:-60px; width:200px; height:200px; border-radius:50%; background:rgba(255,255,255,0.08); pointer-events:none; }
.cta-banner::after { content:''; position:absolute; bottom:-40px; left:-40px; width:160px; height:160px; border-radius:50%; background:rgba(255,255,255,0.06); pointer-events:none; }
.cta-banner h2 { color:#fff; font-size:2rem; margin-bottom:12px; position:relative; z-index:1; }
.cta-banner p { opacity:0.9; margin-bottom:24px; position:relative; z-index:1; }
.cta-banner .btn-primary { background:#fff; color:#c4735a; box-shadow:0 4px 16px rgba(0,0,0,0.15); position:relative; z-index:1; }
.cta-banner .btn-primary:hover { background:#faf8f5; }

/* 页脚 */
.site-footer { padding:56px 0 28px; background:#3d2e28; color:#e8d5c4; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand .logo { color:#faf8f5; margin-bottom:12px; }
.footer-brand p { opacity:0.7; font-size:0.9rem; }
.footer-col h4 { color:#faf8f5; margin-bottom:14px; font-size:0.95rem; font-weight:650; }
.footer-col a { display:block; color:#c4b5a8; text-decoration:none; font-size:0.85rem; padding:4px 0; transition:0.2s; }
.footer-col a:hover { color:#d4957f; padding-left:4px; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.1); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; opacity:0.6; color:#c4b5a8; }

/* 工具类 */
.text-accent { color:#c4735a; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#5c4a3f; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .hero .container { grid-template-columns:1fr; text-align:center; }
  .hero h1 { font-size:2.2rem; }
  .hero p { margin:0 auto 24px; }
  .hero-buttons { justify-content:center; }
  .hero-image { max-width:400px; margin:0 auto; }
  .feature-block { grid-template-columns:1fr; gap:32px; }
  .feature-image { order:-1; }
  .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:#faf8f5; padding:24px; gap:16px; border-bottom:2px solid #e8d5c4; box-shadow:0 8px 24px rgba(0,0,0,0.06); }
  .main-nav.open a { font-size:1rem; }
  .section { padding:56px 0; }
  .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; align-items:center; }
  .hero h1 { font-size:1.8rem; }
  .section-title { font-size:1.5rem; }
  .cta-banner h2 { font-size:1.5rem; }
}