/* 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:#2D3A4A; 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; }
.section:nth-child(even) { background:#FFF3EC; }

/* 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(14px); border-bottom:1px solid rgba(255,107,91,0.12); }
.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:8px; font-weight:800; font-size:1.2rem; text-decoration:none; color:#2D3A4A; letter-spacing:-0.4px; }
.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,#FF6B5B,#FF8E7A); color:#fff; }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.88rem; font-weight:550; color:#5A6B7A; transition:0.25s; position:relative; }
.main-nav a:hover { color:#FF6B5B; }
.main-nav a::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2.5px; background:#FF6B5B; border-radius:3px; transition:0.3s ease; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:9px 22px; border-radius:24px; color:#fff!important; font-weight:700; background:linear-gradient(135deg,#FF6B5B,#FF4F3A); box-shadow:0 4px 15px rgba(255,107,91,0.35); letter-spacing:0.3px; }
.nav-cta::after { display:none!important; }
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(255,107,91,0.45); }
.menu-toggle { display:none; }

/* 首页Hero */
.hero { min-height:70vh; display:flex; align-items:center; position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-180px; right:-120px; width:500px; height:500px; background:radial-gradient(circle,rgba(78,205,196,0.18) 0%,transparent 70%); border-radius:50%; pointer-events:none; }
.hero::after { content:''; position:absolute; bottom:-100px; left:-80px; width:360px; height:360px; background:radial-gradient(circle,rgba(255,107,91,0.12) 0%,transparent 70%); border-radius:50%; pointer-events:none; }
.hero-content { max-width:720px; position:relative; z-index:1; }
.hero-eyebrow { display:inline-block; font-size:0.82rem; font-weight:700; padding:5px 16px; border-radius:20px; margin-bottom:16px; background:#FFEDE8; color:#FF6B5B; letter-spacing:1.5px; text-transform:uppercase; }
.hero h1 { font-size:3rem; line-height:1.15; margin-bottom:20px; font-weight:900; letter-spacing:-1px; color:#1E2A36; }
.hero h1 .highlight { background:linear-gradient(135deg,#FF6B5B,#FF4F3A); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:1.1rem; opacity:0.7; max-width:560px; margin-bottom:32px; color:#5A6B7A; line-height:1.7; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { border-radius:16px; overflow:hidden; box-shadow:0 20px 50px rgba(255,107,91,0.1),0 4px 12px rgba(0,0,0,0.04); position:relative; z-index:1; }
.hero-image img { width:100%; height:auto; }

/* 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:0.25s; font-size:0.92rem; letter-spacing:0.2px; }
.btn-primary { color:#fff; background:linear-gradient(135deg,#FF6B5B,#FF4F3A); box-shadow:0 6px 20px rgba(255,107,91,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 10px 28px rgba(255,107,91,0.4); }
.btn-outline { background:transparent; border:2px solid #FF6B5B; color:#FF6B5B; }
.btn-outline:hover { background:#FFF3EC; }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.78rem; font-weight:700; letter-spacing:2.5px; margin-bottom:12px; color:#4ECDC4; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:900; letter-spacing:-0.6px; color:#1E2A36; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color:#5A6B7A; font-size:1rem; 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:1.5px solid transparent; transition:0.3s; background:#fff; position:relative; overflow:hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:4px; background:linear-gradient(90deg,#FF6B5B,#4ECDC4); transform:scaleX(0); transform-origin:left; transition:0.4s ease; border-radius:0 0 4px 4px; }
.category-card:hover::before { transform:scaleX(1); }
.category-card:hover { transform:translateY(-4px); box-shadow:0 16px 36px rgba(45,58,74,0.08),0 4px 8px rgba(0,0,0,0.03); border-color:#FDE8E3; }
.card-icon { width:50px; height:50px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:16px; font-size:1.4rem; background:#FFF3EC; color:#FF6B5B; }
.card-link { font-weight:700; font-size:0.85rem; text-decoration:none; color:#FF6B5B; display:inline-flex; align-items:center; gap:4px; transition:0.2s; }
.card-link:hover { gap:8px; }

/* 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 16px 40px rgba(255,107,91,0.08); }
.feature-image img { width:100%; height:auto; }
.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:#5A6B7A; }
.feature-list li::before { content:'✓'; font-weight:700; color:#4ECDC4; font-size:1.1rem; flex-shrink:0; width:22px; height:22px; display:flex; align-items:center; justify-content:center; background:#E8FAF8; 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:1.5px solid transparent; background:#fff; transition:0.3s; }
.stat-item:hover { border-color:#FDE8E3; box-shadow:0 8px 24px rgba(255,107,91,0.06); transform:translateY(-2px); }
.stat-number { font-size:2.4rem; font-weight:900; background:linear-gradient(135deg,#FF6B5B,#FF8E7A); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:0.88rem; opacity:0.6; margin-top:6px; color:#5A6B7A; 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:1.5px solid transparent; transition:0.3s; background:#fff; }
.content-wall-item:hover { transform:translateY(-4px); box-shadow:0 16px 36px rgba(45,58,74,0.08); border-color:#FDE8E3; }
.content-wall-item img { width:100%; height:200px; object-fit:cover; }
.content-wall-body { padding:22px 20px; }
.content-wall-body h3 { font-size:1.05rem; font-weight:700; color:#1E2A36; margin-bottom:6px; }
.content-wall-body p { font-size:0.88rem; color:#5A6B7A; opacity:0.75; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1.5px solid #FDE8E3; border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:0.25s; }
.faq-item:hover { border-color:#FFD4CA; }
.faq-item .faq-question { padding:18px 22px; font-weight:700; display:flex; justify-content:space-between; align-items:center; color:#1E2A36; font-size:0.98rem; }
.faq-item .faq-answer { padding:0 22px 18px; display:none; opacity:0.7; color:#5A6B7A; font-size:0.9rem; line-height:1.7; }
.faq-item.open { border-color:#FF6B5B; box-shadow:0 4px 16px rgba(255,107,91,0.08); }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:60px 24px; text-align:center; border-radius:20px; color:#fff; background:linear-gradient(135deg,#FF6B5B 0%,#FF4F3A 50%,#E84530 100%); position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-60px; right:-60px; width:200px; height:200px; background:rgba(255,255,255,0.08); border-radius:50%; pointer-events:none; }
.cta-banner::after { content:''; position:absolute; bottom:-40px; left:-40px; width:150px; height:150px; background:rgba(255,255,255,0.06); border-radius:50%; pointer-events:none; }
.cta-banner h2 { color:#fff; font-weight:900; font-size:2rem; letter-spacing:-0.5px; position:relative; z-index:1; }
.cta-banner p { color:rgba(255,255,255,0.85); position:relative; z-index:1; }
.cta-banner .btn-primary { background:#fff; color:#FF4F3A; box-shadow:0 6px 20px rgba(0,0,0,0.2); position:relative; z-index:1; }
.cta-banner .btn-primary:hover { background:#FFFBF5; }

/* 页脚 */
.site-footer { padding:56px 0 28px; background:#1E2A36; color:#BCC5CF; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand h3 { color:#fff; font-weight:800; font-size:1.3rem; letter-spacing:-0.4px; margin-bottom:8px; }
.footer-brand p { opacity:0.65; font-size:0.9rem; line-height:1.6; }
.footer-col h4 { color:#fff; font-weight:700; font-size:0.95rem; margin-bottom:16px; letter-spacing:0.2px; }
.footer-col a { display:block; color:#8A9BA8; text-decoration:none; font-size:0.85rem; padding:4px 0; transition:0.2s; }
.footer-col a:hover { color:#FF6B5B; padding-left:4px; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.08); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; opacity:0.5; color:#8A9BA8; }

/* 工具类 */
.text-accent { color:#FF6B5B; font-weight:700; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#5A6B7A; font-size:0.95rem; 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:32px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); gap:14px; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:28px; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; align-items:center; justify-content:center; width:40px; height:40px; border-radius:10px; background:#FFF3EC; border:none; cursor:pointer; font-size:1.2rem; color:#FF6B5B; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:#FFFBF5; padding:20px; border-bottom:2px solid #FDE8E3; box-shadow:0 12px 30px rgba(0,0,0,0.06); }
  .hero h1 { font-size:2.2rem; }
  .section-title { font-size:1.8rem; }
  .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; }
  .hero-buttons { flex-direction:column; }
  .hero h1 { font-size:1.8rem; }
  .section { padding:48px 0; }
  .hero { min-height:60vh; }
  .stat-number { font-size:1.8rem; }
  .cta-banner { padding:40px 18px; border-radius:14px; }
}