/* 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:#FFFAF5; color:#1a1a2e; 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:#FFF5EC; }

/* 导航 — 固定顶部 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(255,250,245,0.92); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); border-bottom:1px solid rgba(255,107,91,0.12); transition:all 0.3s; }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:70px; max-width:1200px; margin:0 auto; padding:0 24px; }
.logo { display:flex; align-items:center; gap:10px; font-weight:800; font-size:1.35rem; text-decoration:none; color:#1a1a2e; letter-spacing:-0.5px; }
.logo-icon { width:40px; height:40px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:1.2rem; background:linear-gradient(135deg,#FF6B5B,#FF8E7A); color:#fff; box-shadow:0 4px 12px rgba(255,107,91,0.3); }
.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:#3a3a52; transition:0.25s; position:relative; letter-spacing:0.3px; }
.main-nav a:hover { color:#FF6B5B; }
.main-nav a::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px; background:#FF6B5B; border-radius:2px; transition:width 0.3s; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:10px 22px; border-radius:25px; color:#fff!important; font-weight:700; background:linear-gradient(135deg,#FF6B5B,#FF5A48); box-shadow:0 4px 14px rgba(255,107,91,0.35); transition:all 0.3s!important; letter-spacing:0.5px; }
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 8px 22px rgba(255,107,91,0.45); }
.nav-cta::after { display:none; }
.menu-toggle { display:none; width:40px; height:40px; align-items:center; justify-content:center; border-radius:10px; background:#FFF5EC; border:1.5px solid #FFE0D5; cursor:pointer; flex-direction:column; gap:5px; }
.menu-toggle span { display:block; width:20px; height:2px; background:#1a1a2e; border-radius:1px; transition:0.3s; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; background:linear-gradient(160deg,#FFFAF5 0%,#FFF5EC 40%,#FFF0E6 100%); position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-120px; right:-80px; width:400px; height:400px; border-radius:50%; background:radial-gradient(circle,rgba(46,196,178,0.10) 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(255,107,91,0.08) 0%,transparent 70%); pointer-events:none; }
.hero-content { max-width:680px; position:relative; z-index:1; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:700; padding:5px 16px; border-radius:20px; margin-bottom:18px; background:#FFE8E2; color:#FF5A48; letter-spacing:1.5px; text-transform:uppercase; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:22px; font-weight:900; color:#1a1a2e; letter-spacing:-1px; }
.hero h1 .highlight { background:linear-gradient(135deg,#FF6B5B,#2EC4B2); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.hero p { font-size:1.15rem; opacity:0.7; max-width:520px; margin-bottom:36px; color:#4a4a62; line-height:1.7; }
.hero-buttons { display:flex; gap:16px; flex-wrap:wrap; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 20px 50px rgba(255,107,91,0.15); position:relative; z-index:1; }
.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:28px; font-weight:700; cursor:pointer; border:none; text-decoration:none; transition:all 0.3s; font-size:0.95rem; letter-spacing:0.4px; }
.btn-primary { color:#fff; background:linear-gradient(135deg,#FF6B5B,#FF5A48); box-shadow:0 6px 20px rgba(255,107,91,0.3); }
.btn-primary:hover { transform:translateY(-3px); box-shadow:0 10px 28px rgba(255,107,91,0.4); }
.btn-outline { background:transparent; border:2px solid #1a1a2e; color:#1a1a2e; }
.btn-outline:hover { background:#1a1a2e; color:#fff; transform:translateY(-2px); }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.78rem; font-weight:700; letter-spacing:2.5px; margin-bottom:12px; color:#FF6B5B; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:900; color:#1a1a2e; letter-spacing:-0.5px; }
.section-desc { max-width:600px; opacity:0.65; margin-bottom:44px; color:#4a4a62; 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:18px; padding:30px 26px; border:1.5px solid #FFE8E2; transition:all 0.35s; background:#fff; cursor:pointer; position:relative; overflow:hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:100%; height:0; background:linear-gradient(180deg,rgba(46,196,178,0.04) 0%,transparent 100%); transition:height 0.35s; z-index:0; }
.category-card:hover::before { height:100%; }
.category-card:hover { transform:translateY(-6px); box-shadow:0 16px 40px rgba(255,107,91,0.12); border-color:transparent; }
.category-card > * { position:relative; z-index:1; }
.card-icon { width:52px; height:52px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.4rem; background:linear-gradient(135deg,#FFF5EC,#FFE8E2); color:#FF6B5B; }
.card-link { font-weight:700; font-size:0.85rem; text-decoration:none; color:#FF6B5B; display:inline-flex; align-items:center; gap:6px; transition:gap 0.3s; }
.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(255,107,91,0.1); }
.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; font-size:0.95rem; color:#3a3a52; }
.feature-list li::before { content:'✓'; font-weight:700; color:#2EC4B2; font-size:1.1rem; width:24px; height:24px; border-radius:50%; background:#E8F8F5; 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:20px; text-align:center; }
.stat-item { padding:28px 20px; border-radius:18px; border:1.5px solid #FFE8E2; background:#fff; transition:all 0.3s; }
.stat-item:hover { box-shadow:0 8px 24px rgba(255,107,91,0.08); transform:translateY(-3px); }
.stat-number { font-size:2.4rem; font-weight:900; color:#FF6B5B; letter-spacing:-0.5px; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:6px; color:#4a4a62; 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:18px; overflow:hidden; border:1.5px solid #FFE8E2; transition:all 0.35s; background:#fff; }
.content-wall-item:hover { transform:translateY(-6px); box-shadow:0 16px 36px rgba(255,107,91,0.1); }
.content-wall-item img { width:100%; height:200px; object-fit:cover; }
.content-wall-body { padding:22px; }
.content-wall-body h3 { font-size:1.1rem; font-weight:700; color:#1a1a2e; margin-bottom:6px; }
.content-wall-body p { font-size:0.9rem; color:#4a4a62; opacity:0.7; }

/* FAQ */
.faq-list { max-width:780px; margin:0 auto; }
.faq-item { border:1.5px solid #FFE8E2; border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:all 0.3s; }
.faq-item:hover { border-color:#FFD0C2; }
.faq-item .faq-question { padding:18px 22px; font-weight:700; display:flex; justify-content:space-between; align-items:center; color:#1a1a2e; font-size:0.95rem; }
.faq-item .faq-answer { padding:0 22px 18px; display:none; opacity:0.7; color:#4a4a62; font-size:0.9rem; line-height:1.7; }
.faq-item.open .faq-answer { display:block; }
.faq-item.open { border-color:#2EC4B2; box-shadow:0 4px 16px rgba(46,196,178,0.08); }
.faq-question::after { content:'+'; font-size:1.3rem; color:#FF6B5B; transition:transform 0.3s; }
.faq-item.open .faq-question::after { content:'−'; transform:rotate(180deg); color:#2EC4B2; }

/* CTA横幅 */
.cta-banner { padding:60px 24px; text-align:center; border-radius:22px; color:#fff; background:linear-gradient(135deg,#FF6B5B 0%,#FF5A48 40%,#2EC4B2 100%); 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; font-weight:900; 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:#FF5A48; box-shadow:0 6px 20px rgba(0,0,0,0.15); position:relative; z-index:1; }
.cta-banner .btn-primary:hover { box-shadow:0 10px 28px rgba(0,0,0,0.2); color:#FF5A48; }

/* 页脚 */
.site-footer { padding:60px 0 28px; background:#1a1a2e; color:#d0d0dc; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand .logo { color:#fff; margin-bottom:12px; }
.footer-brand p { opacity:0.6; font-size:0.9rem; line-height:1.7; }
.footer-col h4 { color:#fff; font-weight:700; margin-bottom:16px; font-size:0.95rem; }
.footer-col a { display:block; color:#a0a0b8; text-decoration:none; font-size:0.85rem; padding:5px 0; transition:color 0.3s; }
.footer-col a:hover { color:#FF6B5B; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.08); margin-top:44px; padding-top:20px; text-align:center; font-size:0.85rem; color:#888; }

/* 工具类 */
.text-accent { color:#FF6B5B; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#4a4a62; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 英雄区双栏布局 */
.hero-grid { display:grid; grid-template-columns:1fr 1fr; gap:50px; align-items:center; }
@media (max-width:768px) {
  .hero-grid { grid-template-columns:1fr; }
}

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:32px; }
  .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:70px; left:0; width:100%; background:#FFFAF5; padding:24px; gap:16px; border-bottom:1px solid #FFE8E2; box-shadow:0 10px 30px rgba(0,0,0,0.06); }
  .main-nav.open a { font-size:1rem; }
  .hero h1 { font-size:2.2rem; }
  .hero p { font-size:1rem; }
  .section-title { font-size:1.7rem; }
  .section { padding:50px 0; }
  .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; }
  .hero { min-height:60vh; }
  .btn { width:100%; justify-content:center; }
  .cta-banner { padding:40px 16px; border-radius:16px; }
  .section-title { font-size:1.5rem; }
}