:root{--bg:#edf0f6;--surface:#fff;--line:#d9dfeb;--ink:#0e1830;--muted:#5a6680;--accent:#2347c8;--warn-bg:#fff4d6;--warn-ink:#6b4b00}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#090e1b;--surface:#101829;--line:#22304d;--ink:#e9eef9;--muted:#8f9bb7;--accent:#7b97ff;--warn-bg:#3a2e0a;--warn-ink:#ffd76a}}
:root[data-theme="dark"]{--bg:#090e1b;--surface:#101829;--line:#22304d;--ink:#e9eef9;--muted:#8f9bb7;--accent:#7b97ff;--warn-bg:#3a2e0a;--warn-ink:#ffd76a}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 "IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif}
.top{background:#0b1430;color:#fff;padding:18px 16px}
.top a{color:#fff;text-decoration:none;font:800 22px/1 "Barlow Condensed",system-ui,sans-serif;letter-spacing:.02em;text-transform:uppercase}
.top a span{color:#f1b400}
main{max-width:760px;margin:0 auto;padding:24px 16px 48px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px 20px;margin-bottom:16px}
h1{font:800 34px/1.1 "Barlow Condensed",system-ui,sans-serif;text-transform:uppercase;margin:0 0 6px}
h2{font:700 20px/1.3 "IBM Plex Sans",system-ui,sans-serif;margin:24px 0 6px}
h2:first-child{margin-top:0}
p,li{color:var(--ink)} .muted{color:var(--muted);font-size:14px}
a{color:var(--accent)}
ul{padding-left:20px}
.todo{background:var(--warn-bg);color:var(--warn-ink);border-radius:4px;padding:0 4px;font-weight:600}
.help{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin:12px 0}
.help div{border:1px solid var(--line);border-radius:10px;padding:12px}
.help b{display:block}
footer{max-width:760px;margin:0 auto;padding:0 16px 40px;color:var(--muted);font-size:14px}
footer a{color:var(--muted)}