:root{--navy:#0f172a;--navy2:#1e293b;--accent:#10b981;--accent-dark:#059669;--red:#ef4444;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);line-height:1.75;background:#fff}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
a{color:var(--accent-dark);text-decoration:none}
h1{font-size:2.4rem;line-height:1.3}
h2{font-size:1.7rem;margin-bottom:.6em}
h3{font-size:1.15rem;margin-bottom:.5em}
p{margin-bottom:.8em}
img{max-width:100%}
.site-header{position:sticky;top:0;z-index:50;background:var(--navy);box-shadow:0 2px 8px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-logo{width:34px;height:34px;display:block;border-radius:8px}
.brand-name{color:#fff;font-weight:700;font-size:17px}
.nav{display:flex;gap:4px}
.nav-link{color:#cbd5e1;padding:8px 14px;border-radius:8px;font-size:15px}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link.active{color:#10b981;background:rgba(16,185,129,.12);font-weight:600}
.header-auth{display:flex;gap:10px;margin-left:12px}
.auth-register{color:#cbd5e1;font-size:14px;padding:7px 12px;border-radius:8px;border:1px solid #334155}
.auth-register:hover{color:#fff;border-color:var(--accent)}
.auth-login{background:var(--accent);color:#fff;font-size:14px;font-weight:600;padding:7px 16px;border-radius:8px}
.auth-login:hover{background:var(--accent-dark)}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:22px;cursor:pointer}
.hero{background:linear-gradient(160deg,#0f172a 0%,#134e4a 100%);color:#fff;padding:96px 0 88px;text-align:center}
.hero-sub{font-size:1.25rem;color:#5eead4;margin:14px 0 10px;font-weight:600}
.hero-desc{color:#cbd5e1;max-width:780px;margin:0 auto 32px}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 28px;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;border:0;text-decoration:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{border:1.5px solid var(--line);color:var(--text);background:#fff}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-dark)}
.btn-system{background:rgba(16,185,129,.16);border:1.5px solid var(--accent);color:#5eead4}
.btn-system:hover{background:var(--accent);color:#fff}
.btn-white{background:#fff;color:var(--accent-dark)}
.btn-white-ghost{border:1.5px solid rgba(255,255,255,.7);color:#fff}
.trust{background:#0b1220;padding:18px 0}
.trust-inner{display:flex;flex-wrap:wrap;gap:12px 36px;justify-content:center}
.trust-inner span{color:#94a3b8;font-size:14px;position:relative;padding-left:18px}
.trust-inner span::before{content:"✓";color:var(--accent);position:absolute;left:0;font-weight:700}
.section{padding:72px 0}
.section-alt{background:var(--bg)}
.section-desc{color:var(--muted);margin-bottom:36px}
.center{text-align:center;margin-top:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;transition:transform .15s,box-shadow .15s;position:relative}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(15,23,42,.08)}
.card p{color:var(--muted);font-size:15px}
.card-num{position:absolute;top:18px;right:22px;font-size:26px;font-weight:800;color:#e2e8f0}
.more{font-size:14px;font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:12px}
.chip{background:#fff;border:1px solid var(--line);padding:10px 22px;border-radius:999px;font-size:15px}
.chip:hover{border-color:var(--accent);color:var(--accent-dark)}
.head-chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:28px}
.head-chips .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.25);color:#e2e8f0}
.head-chips .chip:hover{border-color:var(--accent);color:#5eead4}
.news-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 24px;margin-bottom:16px}
.news-item time{color:var(--accent-dark);font-size:13px;font-weight:600}
.news-item h2,.news-item h3{font-size:17px;margin:6px 0}
.news-item p{color:var(--muted);font-size:14px}
.cta-band{background:linear-gradient(135deg,#065f46,#10b981);color:#fff;text-align:center;padding:64px 24px}
.cta-band h2{color:#fff}
.cta-band a:not(.btn){color:#fff;text-decoration:underline}
.cta-flex{display:flex;align-items:center;justify-content:center;gap:48px;flex-wrap:wrap}
.cta-qr{width:150px;height:150px;border:6px solid rgba(255,255,255,.85);border-radius:12px;background:#fff}
.cta-login{margin-top:18px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-login a{text-decoration:none}
.page-head{background:linear-gradient(160deg,#0f172a,#134e4a);color:#fff;text-align:center;padding:64px 24px}
.page-head p{color:#cbd5e1;margin:12px 0 0}
.feature-row{display:grid;grid-template-columns:340px 1fr;gap:40px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:36px;margin-bottom:26px;align-items:start}
.feature-row.alt{background:var(--bg)}
.feature-num{font-size:44px;font-weight:800;color:#d1fae5;line-height:1;display:block;margin-bottom:10px}
.feature-side h2{font-size:1.35rem;margin-bottom:10px}
.feature-side .lead{color:var(--accent-dark);font-weight:600;font-size:15px}
.feature-body{border-left:1px dashed var(--line);padding-left:40px;min-height:120px}
.article{padding-top:48px}
.article h1{font-size:1.9rem;margin-bottom:12px}
.article-lead{color:var(--accent-dark);font-weight:600;font-size:17px}
.article-meta{color:var(--muted);font-size:14px;margin-bottom:24px}
.article-cover{border-radius:14px;margin-bottom:24px}
.article-cta{border-top:1px solid var(--line);margin-top:32px;padding-top:24px}
.wrap.narrow{max-width:820px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.related-title{font-size:1.1rem;margin-bottom:16px}
.related{list-style:none}
.related li{padding:10px 0;border-bottom:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.big-link{font-size:1.5rem;font-weight:700}
.c-qr .qr{width:170px;height:170px;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff}
.flow-step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;text-align:center}
.flow-num{display:inline-block;background:var(--accent);color:#fff;font-weight:800;border-radius:999rpx;padding:2px 14px;margin-bottom:12px}
.flow-step h3{font-size:17px}
.flow-step p{font-size:14px}
.honor-grid{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.honor{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 20px;font-size:14px;color:#334155}
.site-footer{background:var(--navy);color:#94a3b8;padding:48px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:32px;padding-bottom:32px}
.site-footer h4{color:#e2e8f0;font-size:15px;margin-bottom:12px}
.site-footer p{margin-bottom:6px}
.site-footer a{color:#94a3b8}
.footer-contact{margin-top:12px}
.kw{color:#cbd5e1}
.footer-bar{border-top:1px solid #1e293b;padding:16px 24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.to-top{position:fixed;right:24px;bottom:32px;width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;border:0;font-size:18px;cursor:pointer;display:none;box-shadow:0 6px 16px rgba(16,185,129,.4)}
.to-top.show{display:block}
.center-404{padding:100px 0;text-align:center}
.center-404 h1{font-size:5rem;color:var(--line)}
@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:16px;padding:28px}
  .feature-body{border-left:0;padding-left:0;border-top:1px dashed var(--line);padding-top:16px}
  h1{font-size:1.8rem}
}
@media (max-width:640px){
  .grid-4,.grid-3,.contact-grid{grid-template-columns:1fr}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--navy);flex-direction:column;padding:12px 16px 16px}
  .nav.open{display:flex}
  .nav-toggle{display:block}
  .header-auth{margin-left:auto}
  .hero{padding:64px 24px}
}