:root{--navy:#1b2a4a;--ink:#1a1f2b;--muted:#5b6475;--bg:#fff;--bg-soft:#f5f7fb;--line:#e3e7ef;--gold:#f4b942;--red:#d6455a;--blue:#2f6fe4}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--ink:#e9edf5;--muted:#a3acbd;--bg:#0f1524;--bg-soft:#151d30;--line:#26314a;--blue:#6f9cf0}}
*{box-sizing:border-box}
body{margin:0;font-family:"Plus Jakarta Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:17px}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:820px;margin:0 auto;padding:0 20px}
header{background:var(--navy)}
.nav{max-width:1120px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.25rem}
.brand:hover{text-decoration:none}
.logo{width:34px;height:34px;border-radius:9px;background:var(--gold);color:var(--navy);display:grid;place-items:center;font-weight:800}
.nav a.back{color:#d5dcec;font-size:.95rem;font-weight:500}
.hero{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:48px 0 36px}
.hero h1{font-size:clamp(1.9rem,4vw,2.6rem);line-height:1.2;margin:0 0 .3em}
.meta{color:var(--muted);font-size:.95rem;margin:0}
main{padding:40px 0 64px}
h2{font-size:1.35rem;margin:2em 0 .5em;line-height:1.3}
h2:first-child{margin-top:0}
p,li{color:var(--ink)}
ul,ol{padding-left:22px}li{margin-bottom:.4em}
.callout{background:var(--bg-soft);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:12px;padding:18px 22px;margin:0 0 28px}
.callout p:first-child{margin-top:0}.callout p:last-child{margin-bottom:0}
.toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:16px 22px;margin-bottom:32px;font-size:.95rem}
.toc ol{margin:.4em 0 0}
.contact{border:1px solid var(--line);border-radius:12px;padding:18px 22px}
footer{background:#111a2e;color:#9aa6c0;padding:32px 0;font-size:.9rem}
footer .row{max-width:1120px;margin:0 auto;padding:0 20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{color:#cfd8ea;margin-right:16px}
@media (max-width:720px){body{font-size:16px}.wrap,.nav,footer .row{padding:0 16px}.hero{padding:36px 0 28px}}