:root{
  --bg:#F6F4EF; --surface:#FFFFFF; --ink:#101828; --ink2:#475467; --ink3:#98A2B3;
  --line:#E7E4DC; --accent:#2456E6; --accent-soft:#EBF0FE; --good:#12855A; --good-bg:#E8F6F0;
  --radius:18px; --shadow:0 1px 2px rgba(16,24,40,.05),0 8px 30px rgba(16,24,40,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:'Sora',sans-serif;line-height:1.15;letter-spacing:-.02em}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
/* ---------- Nav (same as index) ---------- */
nav{position:sticky;top:0;z-index:50;background:rgba(246,244,239,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-family:'Sora';font-weight:700;font-size:17px;text-decoration:none;color:var(--ink)}
.logo-mark{width:30px;height:30px;border-radius:9px;background:var(--accent);display:grid;place-items:center;color:#fff;font-size:13px;font-weight:800}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--ink2);text-decoration:none;font-size:14px;font-weight:500}
.nav-links a:hover{color:var(--ink)}
.nav-links a.btn-primary,.nav-links a.btn-primary:hover{color:#fff}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:600;font-size:14px;text-decoration:none;border:none;cursor:pointer;transition:.2s;font-family:'Inter'}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#1B45C2;transform:translateY(-1px)}
@media(max-width:760px){.nav-links a:not(.btn){display:none}}
/* ---------- Page header ---------- */
.page-head{padding:64px 0 8px}
.page-head .kicker{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.page-head h1{font-size:clamp(30px,4.4vw,44px);font-weight:800;max-width:760px;margin-bottom:14px}
.page-head p.sub{font-size:17px;color:var(--ink2);max-width:680px}
.updated{font-size:13px;color:var(--ink3);font-weight:500}
/* ---------- Prose ---------- */
.prose{max-width:760px;padding:28px 0 72px}
.prose h2{font-size:22px;font-weight:700;margin:34px 0 10px}
.prose h3{font-size:17px;font-weight:700;margin:22px 0 8px}
.prose p{color:var(--ink2);font-size:15.5px;margin-bottom:14px}
.prose ul{color:var(--ink2);font-size:15.5px;margin:0 0 14px 20px;display:flex;flex-direction:column;gap:6px}
.prose a{color:var(--accent);text-decoration:none}
.prose a:hover{text-decoration:underline}
.callout{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;margin:20px 0;font-size:15px;color:var(--ink2)}
.callout.good{background:var(--good-bg);border-color:transparent}
.callout b{color:var(--ink)}
/* ---------- Footer (same as index) ---------- */
footer{border-top:1px solid var(--line);padding:40px 0;margin-top:20px}
.foot-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px;font-size:13.5px;color:var(--ink3)}
.foot-in a{color:var(--ink2);text-decoration:none;margin-left:18px}
.foot-in a:hover{color:var(--ink)}