/* 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:#FFFBF5; color:#3D2E2A; 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:#FDF5EC; }

/* 导航 — 固定顶部 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(255,251,245,0.92); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px); border-bottom:1px solid rgba(200,150,100,0.12); transition:0.3s; }
.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:1.25rem; text-decoration:none; color:#3D2E2A; letter-spacing:-0.5px; }
.logo-icon { width:38px; height:38px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:0.95rem; background:linear-gradient(135deg,#E86A4D,#D4913D); color:#fff; font-weight:700; letter-spacing:-1px; }
.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:#5C4338; transition:0.25s; position:relative; padding:4px 0; }
.main-nav a::after { content:''; position:absolute; bottom:-2px; left:0; width:0; height:2px; background:linear-gradient(90deg,#E86A4D,#D4913D); border-radius:1px; transition:0.3s; }
.main-nav a:hover { color:#E86A4D; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:10px 22px!important; border-radius:24px!important; color:#fff!important; font-weight:700!important; background:linear-gradient(135deg,#E86A4D,#D9643B)!important; box-shadow:0 4px 18px rgba(232,106,77,0.3); transition:0.3s!important; }
.nav-cta:hover { box-shadow:0 6px 24px rgba(232,106,77,0.45); transform:translateY(-2px); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; background:none; border:none; cursor:pointer; width:40px; height:40px; flex-direction:column; justify-content:center; gap:6px; padding:8px; border-radius:8px; }
.menu-toggle span { display:block; width:24px; height:2.5px; background:#5C4338; border-radius:2px; transition:0.3s; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-30%; right:-15%; width:600px; height:600px; background:radial-gradient(circle,rgba(232,106,77,0.08) 0%,transparent 70%); border-radius:50%; pointer-events:none; }
.hero::after { content:''; position:absolute; bottom:-20%; left:-10%; width:400px; height:400px; background:radial-gradient(circle,rgba(212,145,61,0.06) 0%,transparent 70%); border-radius:50%; pointer-events:none; }
.hero .container { position:relative; z-index:1; }
.hero-content { max-width:720px; }
.hero-eyebrow { display:inline-block; font-size:0.82rem; font-weight:700; padding:6px 16px; border-radius:20px; margin-bottom:18px; background:#FFF0E8; color:#E86A4D; letter-spacing:1.5px; text-transform:uppercase; }
.hero h1 { font-size:3.4rem; line-height:1.15; margin-bottom:22px; font-weight:900; letter-spacing:-1.5px; color:#3D2E2A; }
.hero h1 .highlight { background:linear-gradient(135deg,#E86A4D,#D4913D); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:1.15rem; opacity:0.7; max-width:560px; margin-bottom:34px; color:#5C4338; line-height:1.7; }
.hero-buttons { display:flex; gap:14px; flex-wrap:wrap; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 20px 60px rgba(200,150,100,0.15); }
.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:700; cursor:pointer; border:none; text-decoration:none; transition:all 0.3s; font-size:0.95rem; letter-spacing:0.3px; }
.btn-primary { color:#fff; background:linear-gradient(135deg,#E86A4D,#D9643B); box-shadow:0 6px 22px rgba(232,106,77,0.28); }
.btn-primary:hover { box-shadow:0 8px 28px rgba(232,106,77,0.4); transform:translateY(-3px); }
.btn-outline { background:transparent; border:2px solid #E86A4D; color:#E86A4D; }
.btn-outline:hover { background:#E86A4D; color:#fff; }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.78rem; font-weight:700; letter-spacing:2.5px; margin-bottom:14px; color:#E86A4D; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:800; letter-spacing:-0.8px; color:#3D2E2A; line-height:1.25; }
.section-desc { max-width:600px; opacity:0.65; margin-bottom:40px; font-size:1.05rem; color:#5C4338; line-height:1.7; }

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); gap:24px; }
.category-card { border-radius:16px; padding:30px 26px; border:1.5px solid rgba(200,160,120,0.18); transition:all 0.35s; 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,#E86A4D,#D4913D); transform:scaleX(0); transform-origin:left; transition:0.4s; border-radius:0 0 4px 4px; }
.category-card:hover { transform:translateY(-6px); box-shadow:0 16px 40px rgba(180,120,80,0.12); border-color:rgba(232,106,77,0.25); }
.category-card:hover::before { transform:scaleX(1); }
.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:linear-gradient(135deg,#FFF0E8,#FFE8DB); color:#E86A4D; }
.card-link { font-weight:700; font-size:0.85rem; text-decoration:none; color:#E86A4D; display:inline-flex; align-items:center; gap:6px; transition:0.2s; }
.card-link:hover { gap:10px; color:#D9643B; }

/* 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 20px 50px rgba(200,150,100,0.12); }
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { padding:7px 0; display:flex; align-items:center; gap:10px; font-size:0.98rem; color:#5C4338; }
.feature-list li::before { content:'✓'; font-weight:800; color:#E86A4D; font-size:1.1rem; }

/* 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:1.5px solid rgba(200,160,120,0.15); background:#fff; transition:0.3s; }
.stat-item:hover { border-color:rgba(232,106,77,0.3); box-shadow:0 8px 28px rgba(180,120,80,0.08); }
.stat-number { font-size:2.5rem; font-weight:900; background:linear-gradient(135deg,#E86A4D,#D4913D); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; letter-spacing:-1px; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; color:#5C4338; font-weight:500; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(290px,1fr)); gap:24px; }
.content-wall-item { border-radius:16px; overflow:hidden; border:1.5px solid rgba(200,160,120,0.15); transition:all 0.35s; background:#fff; }
.content-wall-item:hover { transform:translateY(-6px); box-shadow:0 16px 40px rgba(180,120,80,0.12); }
.content-wall-item img { width:100%; height:210px; object-fit:cover; display:block; }
.content-wall-body { padding:22px; }
.content-wall-body h3 { font-weight:700; font-size:1.05rem; color:#3D2E2A; margin-bottom:6px; }
.content-wall-body p { font-size:0.9rem; opacity:0.6; color:#5C4338; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1.5px solid rgba(200,160,120,0.18); border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:0.25s; }
.faq-item:hover { border-color:rgba(232,106,77,0.25); }
.faq-item .faq-question { padding:18px 22px; font-weight:700; display:flex; justify-content:space-between; align-items:center; color:#3D2E2A; font-size:1rem; }
.faq-item .faq-question::after { content:'+'; font-size:1.4rem; color:#E86A4D; transition:0.3s; font-weight:400; }
.faq-item .faq-answer { padding:0 22px 18px; display:none; opacity:0; transition:0.3s; color:#5C4338; line-height:1.7; }
.faq-item.open .faq-answer { display:block; opacity:0.75; }
.faq-item.open .faq-question::after { content:'−'; }

/* CTA横幅 */
.cta-banner { padding:60px 24px; text-align:center; border-radius:20px; color:#fff; background:linear-gradient(135deg,#E86A4D 0%,#D9643B 30%,#D4913D 100%); position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-40%; right:-20%; width:350px; height:350px; background:rgba(255,255,255,0.06); border-radius:50%; pointer-events:none; }
.cta-banner::after { content:''; position:absolute; bottom:-30%; left:-15%; width:250px; height:250px; background:rgba(255,255,255,0.04); border-radius:50%; pointer-events:none; }
.cta-banner h2 { color:#fff; font-size:2rem; font-weight:800; position:relative; z-index:1; letter-spacing:-0.5px; }
.cta-banner p { color:rgba(255,255,255,0.85); position:relative; z-index:1; margin-bottom:24px; }
.cta-banner .btn-primary { background:#fff; color:#E86A4D; box-shadow:0 6px 22px rgba(0,0,0,0.12); font-weight:700; }
.cta-banner .btn-primary:hover { background:#FFFBF5; box-shadow:0 8px 28px rgba(0,0,0,0.16); }

/* 页脚 */
.site-footer { padding:56px 0 28px; background:#FDF5EC; border-top:1px solid rgba(200,160,120,0.15); }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand p { opacity:0.6; margin-top:8px; font-size:0.9rem; color:#5C4338; }
.footer-col h4 { font-weight:700; margin-bottom:14px; color:#3D2E2A; font-size:0.95rem; }
.footer-col a { display:block; text-decoration:none; color:#5C4338; font-size:0.9rem; padding:4px 0; opacity:0.7; transition:0.2s; }
.footer-col a:hover { opacity:1; color:#E86A4D; }
.footer-bottom { border-top:1px solid rgba(200,160,120,0.15); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; color:#8C7265; opacity:0.7; }

/* 工具类 */
.text-accent { color:#E86A4D; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.65; color:#5C4338; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:36px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); gap:16px; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:28px; }
  .hero h1 { font-size:2.2rem; }
  .hero p { font-size:1rem; }
  .section-title { font-size:1.6rem; }
  .section { padding:50px 0; }
  .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:#FFFBF5; padding:24px; border-bottom:1px solid rgba(200,160,120,0.15); box-shadow:0 12px 30px rgba(0,0,0,0.06); gap:16px; }
  .main-nav.open a { font-size:1rem; padding:8px 0; }
  .nav-cta { text-align:center; display:block; width:100%; }
  .cta-banner { padding:40px 20px; }
  .cta-banner h2 { font-size:1.5rem; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
}
@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:stretch; }
  .hero-buttons .btn { justify-content:center; }
  .hero h1 { font-size:1.8rem; }
  .hero { min-height:60vh; padding:40px 0; }
  .section-title { font-size:1.4rem; }
  .container { padding:0 16px; }
  .header-inner { padding:0 16px; }
  .stat-number { font-size:1.8rem; }
  .category-card { padding:22px 18px; }
}