:root{--blue:#2563eb;--blue2:#1d4ed8;--deep:#0f1e3d;--pale:#eff6ff;--line:#e2e5e9;--text:#374151;--muted:#6b7280;--bg:#fbfcfc;--white:#fff;--green:#0f766e;--amber:#92400e}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1040px;margin:auto;padding:0 24px}
.top{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.top-in{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand img{height:52px;width:auto;display:block}
.nav{display:flex;gap:18px;align-items:center;flex-wrap:wrap;justify-content:flex-end;font-size:14px;font-weight:650}
.hero{padding:72px 0 50px;background:linear-gradient(135deg,var(--pale),#fff)}
.eyebrow{font-size:12px;letter-spacing:2px;color:var(--blue);font-weight:800}
h1{font-size:clamp(34px,6vw,56px);line-height:1.16;color:var(--deep);margin:12px 0 18px;letter-spacing:-1px}
.lead{max-width:780px;color:var(--muted);font-size:18px;margin:0}
.meta{margin-top:20px;color:var(--muted);font-size:13px}
.block{padding:58px 0}
.block.alt{background:#fff;border-top:1px solid #eef0f2;border-bottom:1px solid #eef0f2}
h2{font-size:30px;line-height:1.3;color:var(--deep);margin:0 0 18px}
h3{font-size:19px;color:var(--deep);margin:26px 0 8px}
p{margin:10px 0}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:24px;box-shadow:0 8px 22px rgba(37,99,235,.04)}
.card h3{margin-top:0}
.tag{display:inline-flex;padding:3px 10px;border-radius:99px;background:var(--pale);color:var(--blue2);font-size:12px;font-weight:750}
.tag.green{background:#ecfdf5;color:var(--green)}
.tag.amber{background:#fffbeb;color:var(--amber)}
.fact-list{display:grid;grid-template-columns:190px 1fr;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.fact-list dt,.fact-list dd{margin:0;padding:14px 17px;border-bottom:1px solid var(--line)}
.fact-list dt{font-weight:750;color:var(--deep);background:#f8fafc}
.fact-list dt:last-of-type,.fact-list dd:last-of-type{border-bottom:0}
.note{border-left:4px solid var(--blue);background:var(--pale);border-radius:0 12px 12px 0;padding:16px 18px;margin:22px 0;color:var(--deep)}
.warn{border-left-color:#d97706;background:#fffbeb}
.checklist{padding-left:21px}
.checklist li{margin:8px 0}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);font-size:14px}
th,td{text-align:left;vertical-align:top;padding:13px 14px;border-bottom:1px solid var(--line)}
th{background:#f8fafc;color:var(--deep)}
code{background:#f1f5f9;padding:2px 6px;border-radius:5px;font-size:.92em}
.cta{display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--deep);color:#fff;border-radius:18px;padding:30px;margin-top:26px}
.cta h2{color:#fff;margin:0 0 5px;font-size:24px}.cta p{margin:0;color:rgba(255,255,255,.72)}
.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff!important;padding:10px 18px;border-radius:10px;font-weight:750;white-space:nowrap;text-decoration:none!important}
.foot{border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:12px}
.foot-in{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
@media(max-width:760px){.top-in{height:auto;min-height:64px;padding-top:8px;padding-bottom:8px}.brand img{height:44px}.nav{gap:10px;font-size:12px}.hero{padding:52px 0 36px}.block{padding:42px 0}.grid,.grid.three{grid-template-columns:1fr}.fact-list{grid-template-columns:1fr}.fact-list dt{border-bottom:0;padding-bottom:5px}.fact-list dd{padding-top:4px}.cta{display:block}.cta .btn{margin-top:18px}table{display:block;overflow-x:auto}}