/* 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:#f5f0eb; color:#2d2a24; }

/* 核心布局 — 必须居中 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; }
.section:nth-child(even) { background:#efe9e0; }

/* 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 #d6cec2; }
.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:#2d2a24; letter-spacing:1px; }
.logo-icon { width:40px; height:40px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1.2rem; background:#b8a99a; color:#f5f0eb; }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; color:#6b6256; transition:0.3s; letter-spacing:0.5px; position:relative; }
.main-nav a::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px; background:#d4a373; transition:0.3s; }
.main-nav a:hover::after { width:100%; }
.main-nav a:hover { color:#2d2a24; }
.nav-cta { padding:10px 24px; border-radius:30px; background:#d4a373; color:#f5f0eb!important; font-weight:600; letter-spacing:0.5px; }
.nav-cta:hover { background:#c48b5a; transform:translateY(-1px); }
.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; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-40%; right:-20%; width:500px; height:500px; background:radial-gradient(circle, rgba(212,163,115,0.15) 0%, transparent 70%); border-radius:50%; pointer-events:none; }
.hero-content { max-width:680px; position:relative; z-index:1; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:600; padding:6px 18px; border-radius:30px; margin-bottom:20px; background:#efe9e0; color:#8b7a6a; letter-spacing:2px; text-transform:uppercase; }
.hero h1 { font-size:3.4rem; line-height:1.15; margin-bottom:18px; font-weight:700; letter-spacing:-1px; color:#1f1d19; }
.hero h1 span { color:#d4a373; font-style:italic; }
.hero p { font-size:1.1rem; opacity:0.7; max-width:520px; margin-bottom:36px; line-height:1.7; color:#5a5247; }
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 20px 60px rgba(45,42,36,0.08); }
.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; letter-spacing:0.5px; }
.btn-primary { background:#d4a373; color:#f5f0eb; box-shadow:0 4px 16px rgba(212,163,115,0.3); }
.btn-primary:hover { background:#c48b5a; transform:translateY(-2px); box-shadow:0 6px 20px rgba(212,163,115,0.4); }
.btn-outline { background:transparent; border:1.5px solid #d4a373; color:#d4a373; }
.btn-outline:hover { background:#d4a373; color:#f5f0eb; }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.75rem; font-weight:600; letter-spacing:3px; margin-bottom:14px; color:#d4a373; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:700; letter-spacing:-0.5px; color:#1f1d19; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; line-height:1.7; color:#5a5247; }

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:28px; }
.category-card { border-radius:20px; padding:32px; background:#fff; border:1px solid #e5ddd2; transition:0.4s cubic-bezier(0.25,0.46,0.45,0.94); }
.category-card:hover { transform:translateY(-6px); box-shadow:0 12px 40px rgba(45,42,36,0.08); border-color:#d4a373; }
.card-icon { width:52px; height:52px; border-radius:16px; display:flex; align-items:center; justify-content:center; margin-bottom:20px; font-size:1.4rem; background:#efe9e0; color:#8b7a6a; }
.category-card h3 { font-size:1.15rem; margin-bottom:8px; color:#2d2a24; }
.category-card p { font-size:0.9rem; color:#6b6256; margin-bottom:16px; line-height:1.5; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#d4a373; display:inline-flex; align-items:center; gap:6px; }
.card-link:hover { gap:10px; }

/* 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 8px 32px rgba(45,42,36,0.06); }
.feature-image img { width:100%; height:auto; display:block; transition:0.6s; }
.feature-image:hover img { transform:scale(1.02); }
.feature-text { }
.feature-text h3 { font-size:1.8rem; margin-bottom:16px; color:#1f1d19; }
.feature-text p { line-height:1.7; color:#5a5247; margin-bottom:20px; }
.feature-list { list-style:none; }
.feature-list li { padding:8px 0; display:flex; align-items:center; gap:10px; color:#2d2a24; }
.feature-list li::before { content:'✓'; font-weight:700; color:#d4a373; }

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { padding:32px 20px; border-radius:20px; background:#fff; border:1px solid #e5ddd2; transition:0.3s; }
.stat-item:hover { border-color:#d4a373; box-shadow:0 4px 16px rgba(212,163,115,0.1); }
.stat-number { font-size:2.6rem; font-weight:800; color:#1f1d19; letter-spacing:-1px; }
.stat-number::after { content:''; display:block; width:40px; height:3px; background:#d4a373; margin:8px auto 0; border-radius:3px; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:10px; color:#6b6256; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { border-radius:20px; overflow:hidden; background:#fff; border:1px solid #e5ddd2; transition:0.4s cubic-bezier(0.25,0.46,0.45,0.94); }
.content-wall-item:hover { transform:translateY(-5px); box-shadow:0 12px 40px rgba(45,42,36,0.08); border-color:#d4a373; }
.content-wall-item img { width:100%; height:220px; object-fit:cover; display:block; }
.content-wall-body { padding:24px; }
.content-wall-body h4 { font-size:1.1rem; margin-bottom:8px; color:#2d2a24; }
.content-wall-body p { font-size:0.9rem; color:#6b6256; line-height:1.5; margin-bottom:12px; }
.content-wall-body .card-link { font-size:0.8rem; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid #e5ddd2; border-radius:16px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:0.3s; }
.faq-item:hover { border-color:#d4a373; }
.faq-item .faq-question { padding:20px 24px; font-weight:600; display:flex; justify-content:space-between; align-items:center; color:#2d2a24; font-size:1.05rem; }
.faq-item .faq-question::after { content:'+'; font-size:1.4rem; color:#d4a373; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 24px 20px; display:none; opacity:0.7; line-height:1.7; color:#5a5247; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:64px 32px; text-align:center; border-radius:24px; background:linear-gradient(135deg, #d4a373 0%, #c48b5a 100%); color:#f5f0eb; position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-50%; left:-50%; width:200%; height:200%; background:radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 60%); pointer-events:none; }
.cta-banner h2 { font-size:2.2rem; margin-bottom:12px; color:#f5f0eb; position:relative; }
.cta-banner p { opacity:0.9; margin-bottom:24px; position:relative; }
.cta-banner .btn-primary { background:#f5f0eb; color:#d4a373; box-shadow:none; }
.cta-banner .btn-primary:hover { background:#fff; transform:translateY(-2px); }

/* 页脚 */
.site-footer { padding:64px 0 32px; background:#2d2a24; color:#c4b9ab; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-brand .logo { color:#f5f0eb; margin-bottom:16px; }
.footer-brand .logo-icon { background:#d4a373; color:#2d2a24; }
.footer-brand p { font-size:0.9rem; line-height:1.6; opacity:0.7; }
.footer-col h4 { color:#f5f0eb; font-size:0.95rem; margin-bottom:16px; font-weight:600; }
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:8px; }
.footer-col a { color:#c4b9ab; text-decoration:none; font-size:0.9rem; transition:0.2s; }
.footer-col a:hover { color:#d4a373; }
.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:0.6; }

/* 工具类 */
.text-accent { color:#d4a373; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .hero h1 { font-size:2.4rem; }
  .hero { min-height:60vh; }
  .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; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:#f5f0eb; padding:24px; gap:16px; border-bottom:1px solid #d6cec2; }
  .main-nav.open a::after { display:none; }
  .section-title { font-size:1.8rem; }
  .cta-banner h2 { font-size:1.6rem; }
}
@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-eyebrow { font-size:0.7rem; }
}