:root{--bg:#07101d;--panel:#0d1929;--line:#24354b;--text:#f4f7fb;--muted:#aebbd0;--cyan:#58ddff;--violet:#a78bfa;--gold:#ffd38a}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% 0,#192d4a 0,transparent 34%),var(--bg);color:var(--text);font:16px/1.8 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit}.wrap{width:min(1120px,calc(100% - 32px));margin:auto}.top{display:flex;align-items:center;justify-content:space-between;padding:22px 0;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;text-decoration:none}.brand img{width:42px;height:42px}.brand strong{display:block}.brand span{display:block;color:var(--muted);font-size:12px;letter-spacing:.12em}.top nav{display:flex;gap:20px}.top nav a{text-decoration:none;color:var(--muted)}.hero{padding:86px 0 58px}.eyebrow{color:var(--cyan);font-size:13px;font-weight:800;letter-spacing:.14em}.hero h1{font-size:clamp(36px,6vw,72px);line-height:1.12;margin:18px 0 24px;max-width:950px}.answer{max-width:880px;font-size:20px;color:#dce7f7;border-left:3px solid var(--cyan);padding-left:22px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.btn{display:inline-flex;text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:10px 18px}.btn.primary{background:linear-gradient(90deg,var(--cyan),var(--violet));color:#07101d;border:none;font-weight:800}
main section{padding:54px 0;border-top:1px solid var(--line)}h2{font-size:clamp(28px,4vw,46px);line-height:1.25;margin:0 0 24px}h3{line-height:1.35}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.card{background:linear-gradient(145deg,rgba(20,39,62,.92),rgba(9,21,36,.92));border:1px solid var(--line);border-radius:18px;padding:24px}.card p{color:var(--muted);margin-bottom:0}.list{display:grid;gap:12px;padding:0;list-style:none;counter-reset:item}.list li{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px;color:#d8e4f4}.process{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.step{padding:18px;border-top:2px solid var(--violet);background:var(--panel)}.step b{color:var(--gold)}.step p{color:var(--muted)}details{border-top:1px solid var(--line);padding:18px 0}summary{font-weight:800;cursor:pointer}details p{color:var(--muted)}.related{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related a{padding:20px;border:1px solid var(--line);border-radius:14px;text-decoration:none;background:var(--panel)}footer{margin-top:50px;padding:38px 0;border-top:1px solid var(--line);color:var(--muted)}.contact{display:flex;gap:18px;flex-wrap:wrap}.crumbs{padding:18px 0;color:var(--muted);font-size:14px}.crumbs a{text-decoration:none}.fact-table{width:100%;border-collapse:collapse}.fact-table th,.fact-table td{border-bottom:1px solid var(--line);text-align:left;padding:13px}.fact-table th{width:180px;color:var(--muted)}
@media(max-width:820px){.top nav{display:none}.grid,.related{grid-template-columns:1fr}.process{grid-template-columns:1fr 1fr}.hero{padding-top:58px}}@media(max-width:520px){.process{grid-template-columns:1fr}.answer{font-size:17px}.hero h1{font-size:38px}}