*, *::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:#fcfcfc; color:#1a1a2e; }

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; }
.section:nth-child(even) { background:#f0f4f8; }

.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(252,252,255,0.92); backdrop-filter:blur(12px); border-bottom:1px solid rgba(0,188,212,0.15); }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; 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:10px; background:linear-gradient(135deg,#00bcd4,#ff7f50); display:flex; align-items:center; justify-content:center; font-size:1.1rem; color:#fff; }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.95rem; font-weight:500; color:#1a1a2e; transition:0.25s; letter-spacing:0.3px; }
.main-nav a:hover { color:#00bcd4; }
.main-nav a:not(.nav-cta)::after { content:''; display:block; width:0; height:2px; background:#ff7f50; transition:0.3s; margin-top:2px; }
.main-nav a:not(.nav-cta):hover::after { width:100%; }
.nav-cta { background:linear-gradient(135deg,#00bcd4,#ff7f50); padding:10px 24px; border-radius:50px; color:#fff!important; font-weight:700; box-shadow:0 4px 12px rgba(0,188,212,0.3); }
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 18px rgba(0,188,212,0.4); }
.menu-toggle { display:n; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none; padding:6px; }
.menu-toggle span { display:block; width:26px; height:3px; background:#1a1a2e; border-radius:4px; transition:0.3s; }

.hero { min-height:75vh; display:flex; align-items:center; position:relative; overflow:hidden; background:linear-gradient(135deg,#f5faff 0%,#fff5f0 100%); }
.hero::before { content:''; position:absolute; top:-100px; right:-100px; width:400px; height:400px; background:radial-gradient(circle,rgba(0,188,212,0.08),transparent 70%); border-radius:50%; pointer-events:none; }
.hero::after { content:''; position:absolute; bottom:-80px; left:-80px; width:300px; height:300px; background:radial-gradient(circle,rgba(255,127,80,0.08),transparent 70%); border-radius:50%; pointer-events:none; }
.hero-content { position:relative; z-index:1; }
.hero-eyebrow { display:inline-block; font-size:0.8rem; font-weight:700; text-transform:uppercase; letter-spacing:2px; padding:6px 18px; border-radius:50px; margin-bottom:18px; background:rgba(0,188,212,0.12); color:#00838f; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; font-weight:900; color:#0d1b2a; }
.hero h1 span { background:linear-gradient(135deg,#00bcd4,#ff7f50); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:1.15rem; opacity:0.8; max-width:540px; margin-bottom:36px; color:#2d3436; }
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:16px; overflow:hidden; box-shadow:0 20px 60px rgba(0,188,212,0.15); transform:rotate(1deg); }
.hero-image img { width:100%; height:auto; }

.btn { display:inline-flex; align-items:center; gap:10px; padding:14px 32px; border-radius:50px; font-weight:700; font-size:0.95rem; cursor:pointer; border:none; text-decoration:none; transition:0.3s; }
.btn-primary { background:linear-gradient(135deg,#00bcd4,#ff7f50); color:#fff; box-shadow:0 6px 20px rgba(0,188,212,0.35); }
.btn-primary:hover { transform:translateY(-3px); box-shadow:0 10px 30px rgba(0,188,212,0.45); }
.btn-outline { background:transparent; border:2px solid #00bcd4; color:#00bcd4; }
.btn-outline:hover { background:#00bcd4; color:#fff; }

.section-label { display:inline-block; font-size:0.8rem; font-weight:700; text-transform:uppercase; letter-spacing:2px; margin-bottom:12px; color:#00bcd4; }
.section-title { font-size:2.2rem; font-weight:900; margin-bottom:16px; color:#0d1b2a; line-height:1.2; }
.section-desc { max-width:620px; opacity:0.7; margin-bottom:44px; color:#2d3436; font-size:1.05rem; }

.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); gap:28px; }
.category-card { border-radius:16px; padding:32px; background:#fff; border:1px solid rgba(0,188,212,0.1); transition:0.35s; box-shadow:0 2px 12px rgba(0,0,0,0.04); }
.category-card:hover { transform:translateY(-6px); box-shadow:0 12px 36px rgba(0,188,212,0.15); border-color:#00bcd4; }
.card-icon { width:56px; height:56px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.5rem; background:linear-gradient(135deg,#e0f7fa,#ffe0b2); color:#00838f; }
.category-card h3 { font-size:1.2rem; font-weight:700; margin-bottom:10px; }
.category-card p { font-size:0.9rem; opacity:0.7; margin-bottom:16px; }
.card-link { font-weight:700; font-size:0.9rem; text-decoration:none; color:#ff7f50; display:inline-flex; align-items:center; gap:4px; }
.card-link:hover { gap:8px; }

.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; box-shadow:0 12px 40px rgba(0,188,212,0.12); }
.feature-image img { width:100%; height:auto; }
.feature-text { }
.feature-text h3 { font-size:1.6rem; font-weight:800; margin-bottom:16px; }
.feature-text p { opacity:0.75; margin-bottom:20px; }
.feature-list { list-style:none; }
.feature-list li { padding:8px 0; display:flex; align-items:center; gap:12px; font-weight:500; }
.feature-list li::before { content:'✓'; font-weight:900; color:#00bcd4; font-size:1.2rem; }

.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:28px; text-align:center; }
.stat-item { padding:32px 16px; border-radius:16px; background:#fff; border:1px solid rgba(0,188,212,0.08); box-shadow:0 2px 12px rgba(0,0,0,0.03); }
.stat-number { font-size:2.6rem; font-weight:900; background:linear-gradient(135deg,#00bcd4,#ff7f50); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:0.95rem; opacity:0.65; margin-top:8px; font-weight:500; }

.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(290px,1fr)); gap:28px; }
.content-wall-item { border-radius:16px; overflow:hidden; background:#fff; border:1px solid rgba(0,188,212,0.08); transition:0.35s; box-shadow:0 2px 10px rgba(0,0,0,0.03); }
.content-wall-item:hover { transform:translateY(-5px); box-shadow:0 12px 36px rgba(0,188,212,0.12); }
.content-wall-item img { width:100%; height:210px; object-fit:cover; }
.content-wall-body { padding:22px; }
.content-wall-body h4 { font-size:1.1rem; font-weight:700; margin-bottom:8px; }
.content-wall-body p { font-size:0.9rem; opacity:0.7; margin-bottom:12px; }
.content-wall-body a { font-weight:600; color:#ff7f50; text-decoration:none; }

.faq-list { max-width:820px; margin:0 auto; }
.faq-item { background:#fff; border:1px solid rgba(0,188,212,0.12); border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; transition:0.3s; }
.faq-item:hover { border-color:#00bcd4; }
.faq-item .faq-question { padding:18px 24px; font-weight:700; font-size:1.05rem; display:flex; justify-content:space-between; align-items:center; color:#0d1b2a; }
.faq-item .faq-question::after { content:'＋'; font-size:1.2rem; transition:0.3s; color:#00bcd4; }
.faq-item.open .faq-question::after { content:'−'; transform:rotate(180deg); }
.faq-item .faq-answer { padding:0 24px 18px; display:none; opacity:0.8; line-height:1.6; color:#2d3436; }
.faq-item.open .faq-answer { display:block; }

.cta-banner { padding:64px 24px; text-align:center; border-radius:20px; background:linear-gradient(135deg,#00bcd4,#ff7f50); color:#fff; margin:40px 0; }
.cta-banner h2 { color:#fff; font-size:2rem; font-weight:900; margin-bottom:12px; }
.cta-banner p { opacity:0.9; margin-bottom:24px; font-size:1.05rem; }
.cta-banner .btn-primary { background:#fff; color:#00bcd4; box-shadow:0 4px 16px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { background:#f0f8ff; }

.site-footer { padding:64px 0 32px; background:#f7fafc; border-top:1px solid rgba(0,188,212,0.1); }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-brand h3 { font-size:1.2rem; font-weight:800; margin-bottom:12px; color:#0d1b2a; }
.footer-brand p { opacity:0.65; font-size:0.9rem; line-height:1.6; }
.footer-col { }
.footer-col h4 { font-weight:700; margin-bottom:14px; color:#0d1b2a; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:10px; }
.footer-col ul a { text-decoration:none; color:#2d3436; opacity:0.7; font-size:0.9rem; transition:0.2s; }
.footer-col ul a:hover { opacity:1; color:#00bcd4; }
.footer-bottom { border-top:1px solid rgba(0,188,212,0.15); margin-top:44px; padding-top:20px; text-align:center; font-size:0.85rem; color:#636e72; }

.text-accent { color:#ff7f50; }
.text-center { text-align:center; }
.seo-description { max-width:640px; margin:0 auto 48px; opacity:0.7; font-size:1rem; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

@media (max-width: 768px) {
  .hero h1 { font-size:2.2rem; }
  .feature-block { grid-template-columns:1fr; }
  .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:72px; left:0; width:100%; background:rgba(252,252,255,0.98); padding:24px 20px; gap:16px; box-shadow:0 8px 24px rgba(0,0,0,0.06); }
  .main-nav.open a { font-size:1rem; }
  .hero-buttons { flex-direction:column; }
  .hero-image { display:none; }
}
@media (max-width: 480px) {
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .hero h1 { font-size:1.8rem; }
  .section-title { font-size:1.6rem; }
}