:root{
  --navy:#14213D; --blue:#2563EB; --green:#16A34A;
  --bg:#F8FAFC; --card:#FFFFFF; --ink:#0F172A; --mut:#64748B; --line:#E2E8F0;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
header.top{background:var(--navy);color:#fff;padding:18px 0}
.wrap{max-width:860px;margin:0 auto;padding:0 22px}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;text-decoration:none}
.logo .mark{width:34px;height:34px;flex:none;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;overflow:hidden}
header.top a.home{color:#CBD5E1;font-size:14px;text-decoration:none}
header.top a.home:hover{color:#fff}
main{padding:42px 0 70px}
h1{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.015em;line-height:1.15}
.updated{color:var(--mut);font-size:13.5px;margin:8px 0 28px}
nav.toc{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin-bottom:30px}
nav.toc b{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}
nav.toc a{display:inline-block;color:var(--blue);text-decoration:none;font-size:14.5px;margin:6px 14px 0 0}
h2{font-size:21px;font-weight:700;margin:34px 0 10px;letter-spacing:-.01em}
p{margin:8px 0;color:#1E293B}
ul{margin:8px 0 8px 22px}
li{margin:5px 0;color:#1E293B}
a{color:var(--blue)}
.card-note{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:12px;padding:14px 18px;margin:14px 0;font-size:15px}
.card-note.amber{border-left-color:#F59E0B;background:#FFFBEB}
b{font-weight:700}
footer{border-top:1px solid var(--line);background:#fff;padding:22px 0;text-align:center;color:var(--mut);font-size:13.5px}
footer a{margin:0 10px}