:root{--bg:#f7f9fc;--card:#fff;--ink:#14213d;--muted:#5b6478;--brand:#0b6bcb;--brand-2:#e8f2fd;--line:#e3e8f0;--accent:#12a37f}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65}
a{color:var(--brand)}img{max-width:100%}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink);text-decoration:none}
.logo span.dot{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#0b6bcb,#12a37f);display:grid;place-items:center;color:#fff;font-size:1rem}
nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:4px 18px;margin:0;padding:8px 0}
nav a{text-decoration:none;color:var(--muted);font-weight:500;font-size:.95rem}
nav a:hover,nav a.on{color:var(--brand)}
.hero{background:linear-gradient(160deg,#0b6bcb 0%,#0a4f96 60%,#0b3d73 100%);color:#fff;padding:72px 0 64px}
.hero h1{font-size:clamp(2rem,5vw,3.1rem);line-height:1.15;margin:0 0 16px;max-width:760px}
.hero p{font-size:1.15rem;opacity:.92;max-width:640px;margin:0 0 8px}
.hero .sub{font-size:.95rem;opacity:.8;margin-top:18px}
.btn{display:inline-block;margin-top:26px;background:#fff;color:#0b4f96;padding:12px 22px;border-radius:10px;font-weight:700;text-decoration:none}
main{padding:48px 0 64px}
.page-title{background:var(--card);border-bottom:1px solid var(--line);padding:40px 0 28px}
.page-title h1{margin:0 0 6px;font-size:clamp(1.7rem,4vw,2.3rem)}
.page-title p{margin:0;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{margin:0 0 8px;font-size:1.1rem}
.card p{margin:0;color:var(--muted)}
.prose{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:clamp(20px,4vw,40px)}
.prose h2{font-size:1.25rem;margin:32px 0 10px}.prose h2:first-child{margin-top:0}
.prose li{margin:4px 0}
section+section{margin-top:44px}
h2.sec{font-size:1.6rem;margin:0 0 18px}
table{width:100%;border-collapse:collapse;margin:8px 0}
td,th{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600;width:38%}
.tags{display:flex;flex-wrap:wrap;gap:8px;padding:0;list-style:none}
.tags li{background:var(--brand-2);color:#0b4f96;padding:6px 12px;border-radius:999px;font-weight:600;font-size:.92rem}
.note{background:#fff8e6;border:1px solid #f3dfa5;border-radius:10px;padding:14px 16px;margin:16px 0}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding-left:44px;margin:14px 0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.9rem}
footer{background:#0f1b33;color:#c8d1e3;padding:40px 0;font-size:.92rem}
footer a{color:#fff;text-decoration:none}footer a:hover{text-decoration:underline}
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
footer h4{color:#fff;margin:0 0 10px}
footer ul{list-style:none;padding:0;margin:0}footer li{margin:4px 0}
.copy{border-top:1px solid #24324f;margin-top:28px;padding-top:18px;font-size:.85rem}