:root{--bg:#f5f5f5;--card:#fff;--text:#2b2f36;--muted:#6b7280;--accent:#10b981;--accent-soft:#ecfdf5;--line:#e5e7eb;--warn:#fff7ed;--warn-line:#f59e0b}
@media (prefers-color-scheme:dark){:root{--bg:#0f1412;--card:#161c19;--text:#e6ebe8;--muted:#9aa5a0;--accent:#34d399;--accent-soft:#12251d;--line:#2a332f;--warn:#2a2114;--warn-line:#b7791f}}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.6;color:var(--text);background:var(--bg);padding:16px}
.container{max-width:820px;margin:0 auto;background:var(--card);padding:32px;border-radius:12px}
h1{color:var(--accent);font-size:1.9rem;margin-bottom:6px}
h2{font-size:1.25rem;margin:30px 0 12px}
h3{font-size:1.05rem;margin:18px 0 8px}
p{margin-bottom:12px}ul,ol{margin:0 0 16px 22px}li{margin-bottom:6px}
.meta{color:var(--muted);font-size:.9rem;margin-bottom:24px}
.summary{background:var(--accent-soft);border:1px solid var(--accent);border-radius:8px;padding:18px 20px;margin-bottom:24px}
.note{background:var(--warn);border:1px solid var(--warn-line);border-radius:8px;padding:14px 18px;margin:16px 0}
.table-wrap{overflow-x:auto;margin-bottom:18px}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{text-align:left;vertical-align:top;padding:9px 11px;border:1px solid var(--line)}
th{background:var(--accent-soft)}
a{color:var(--accent)}
.todo{background:#fde68a;color:#1f2937;padding:0 4px;border-radius:3px}
@media (max-width:600px){.container{padding:20px}}
.lang-switch{font-size:.85rem;color:var(--muted);margin-bottom:14px}
.lang-switch a{color:var(--muted);text-decoration:none}
.lang-switch a:hover{text-decoration:underline}