:root{--ink:#152238;--muted:#526074;--line:#dce4ef;--brand:#1565d8;--soft:#f4f8ff;--nav:#0d1b2d}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72}a{color:inherit;text-decoration:none}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.top{background:#fff;border-bottom:1px solid var(--line)}.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-size:19px;font-weight:800}.links{display:flex;flex-wrap:wrap;gap:16px;font-size:14px;color:#3e4b5e}.links a:hover{color:var(--brand)}.hero{padding:64px 0 42px;background:linear-gradient(120deg,#f8fbff,#eef5ff)}.eyebrow{margin:0 0 10px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.12em}.hero h1{max-width:850px;margin:0;font-size:42px;line-height:1.2}.lead{max-width:880px;margin:18px 0 0;font-size:19px;color:#334155}.scope{max-width:880px;margin:15px 0 0;color:#4b5c73}main{padding:40px 0 72px}.section{padding:28px 0;border-top:1px solid var(--line)}.section:first-child{border-top:0;padding-top:0}h2{margin:0 0 12px;font-size:27px;line-height:1.3}h3{margin:0 0 8px;font-size:18px}p{margin:0;color:var(--muted)}p+p{margin-top:11px}.matrix{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:16px}.entry{display:block;min-height:156px;padding:20px;border:1px solid var(--line);border-radius:8px;background:#fff}.entry:hover{border-color:#9dbce8;background:var(--soft)}.entry small{display:block;margin-bottom:7px;color:var(--brand);font-weight:700}.entry p{font-size:14px}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:16px}.step{padding:16px 0;border-top:3px solid #a9c7f5}.step b{display:block;margin-bottom:8px}.reading{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px}.reading a{display:block;padding:15px 16px;border:1px solid var(--line);border-radius:7px;background:#fff;color:#1d4f9e;font-weight:700}.reading a span{display:block;margin-top:4px;font-size:13px;font-weight:400;color:var(--muted)}.notice{padding:18px 20px;border-left:4px solid var(--brand);background:var(--soft);color:#38506f}.cta{display:inline-flex;margin-top:18px;padding:11px 16px;border-radius:6px;background:var(--brand);color:#fff;font-weight:800}.cta:hover{background:#104eab}.faq details{padding:15px 0;border-top:1px solid var(--line)}.faq summary{cursor:pointer;font-weight:700}.footer{padding:34px 0;background:var(--nav);color:#fff}.footer p{color:#c6d2e0}.footer a{text-decoration:underline}@media(max-width:720px){.nav{padding:15px 0;align-items:flex-start}.links{gap:10px;font-size:13px}.hero{padding:44px 0 30px}.hero h1{font-size:32px}.lead{font-size:17px}.matrix,.steps,.reading{grid-template-columns:1fr}}