*{box-sizing:border-box}
:root{--ink:#20242b;--muted:#667085;--line:#e5e7eb;--blue:#1769aa}
body{margin:0;background:#fff;color:var(--ink);font:16px/1.78 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
.topbar{height:62px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1080px)/2));position:sticky;top:0;background:rgba(255,255,255,.96);z-index:5}
.brand{display:flex;align-items:center;gap:10px;font-weight:650}.brand-mark{width:28px;height:28px;display:grid;place-items:center;background:#1769aa;color:white;border-radius:6px;font-weight:700}.top-note{font-size:12px;color:#87909c}
.home{max-width:1080px;margin:0 auto;padding:54px 24px 70px}
.intro{padding:22px 0 34px;border-bottom:1px solid var(--line)}.eyebrow{font-size:11px;letter-spacing:.13em;color:#1769aa;font-weight:700}
h1{font-size:38px;line-height:1.25;letter-spacing:-.03em;margin:12px 0}.lead{font-size:18px;line-height:1.75;color:#566170;max-width:760px}
.intro-note{margin-top:20px;padding:12px 15px;background:#f6f8fa;border-left:3px solid #7b9bb7;color:#596474;font-size:14px}
.catalog{padding:32px 0}.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:18px}.section-head h2,.how h2{font-size:22px;margin:0}.section-head span{font-size:13px;color:#8b94a1}
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.guide-card{display:flex;flex-direction:column;min-height:310px;border:1px solid var(--line);border-radius:7px;padding:20px 20px 18px;transition:border-color .15s,transform .15s;background:white}
.guide-card:hover{border-color:#a9c3d9;transform:translateY(-2px);text-decoration:none}
.guide-number{font-size:13px;color:#a0a8b3;font-weight:700}.guide-type{font-size:10px;letter-spacing:.12em;color:#1769aa;font-weight:700;margin-top:12px}
.guide-card h3{font-size:20px;line-height:1.4;margin:8px 0}.guide-card p{font-size:14px;color:#596474;line-height:1.75;margin:0 0 16px}
.guide-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}.guide-meta span{font-size:11px;background:#f4f6f8;color:#657080;padding:3px 7px;border-radius:3px}
.guide-open{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:12px;margin-top:18px;color:#1769aa;font-size:13px;font-weight:600}
.how{border-top:1px solid var(--line);padding:26px 0}.how ol{padding-left:22px;color:#596474;font-size:14px}.how li{margin:7px 0}
footer{border-top:1px solid var(--line);padding:24px 0;color:#929aa5;font-size:12px}
@media(max-width:800px){.guide-grid{grid-template-columns:1fr 1fr}.home{padding-top:36px}}
@media(max-width:560px){.topbar{padding:0 16px}.home{padding:28px 16px 50px}h1{font-size:30px}.lead{font-size:16px}.guide-grid{grid-template-columns:1fr}.guide-card{min-height:0}.top-note{font-size:11px}}