@import url(/mail_assets/fonts/inter.css);
:root{--ink:#111827;--txt:#374151;--mute:#6b7280;--line:#e5e7eb;--red:#c8102e;--bg:#f3f4f7}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);background-image:radial-gradient(1100px 520px at 50% -160px,rgba(200,16,46,.09),rgba(200,16,46,0) 70%);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--txt);line-height:1.65;font-size:15.5px;-webkit-font-smoothing:antialiased}
.wrap{max-width:880px;margin:0 auto;padding:40px 16px 48px}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.logo{background:#fff;border-radius:18px;padding:12px 20px;box-shadow:0 8px 24px rgba(17,24,39,.06);line-height:0}
.logo img{height:22px;width:auto}
.nav a{color:var(--mute);text-decoration:none;font-size:14px;font-weight:500;margin-left:16px}
.nav a.on,.nav a:hover{color:var(--red)}
.card{background:#fff;border-radius:18px;box-shadow:0 24px 60px rgba(17,24,39,.08),0 2px 6px rgba(17,24,39,.04);padding:40px 44px}
h1{font-size:30px;line-height:1.2;font-weight:800;letter-spacing:-.02em;color:var(--ink);margin:0 0 8px}
.meta{color:var(--mute);font-size:14px;margin:0 0 26px}
h2{font-size:19px;font-weight:700;color:var(--ink);margin:34px 0 10px;scroll-margin-top:20px}
h2 span{color:var(--red);margin-right:8px}
p{margin:0 0 12px}ul{margin:0 0 12px;padding-left:22px}li{margin:4px 0}
a{color:var(--red)}
.toc{background:#fafafb;border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin:0 0 8px;columns:2;column-gap:28px;font-size:14px}
.toc a{color:var(--txt);text-decoration:none;display:block;padding:2px 0;break-inside:avoid}.toc a:hover{color:var(--red)}
table{width:100%;border-collapse:collapse;margin:8px 0 14px;font-size:14.5px}
th,td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:10px 12px}
th{background:#fafafb;color:var(--ink);font-weight:600}
.box{background:#fafafb;border:1px solid var(--line);border-left:3px solid var(--red);border-radius:10px;padding:14px 18px;margin:10px 0 14px}
.foot{text-align:center;color:#9ca3af;font-size:13px;margin-top:22px}
@media (max-width:640px){.card{padding:26px 20px;border-radius:16px}h1{font-size:24px}.toc{columns:1}th,td{padding:8px}.nav a{margin:0 14px 0 0}}
@media print{body{background:#fff}.card{box-shadow:none;padding:0}.nav,.toc{display:none}}