:root[data-theme="dark"]{color-scheme:dark;--bg:#0b141d;--surface:#13212d;--surface2:#1a2b39;--panel:#13212d;--ink:#eaf2f7;--muted:#a6b8c7;--line:#304558;--cyan:#63dcdf;--amber:#f5bf72;--red:#f37f8e;--green:#4bd3ac;--blue:#74b5f7;--sidebar:#101d28;--notice-bg:#27261f;--notice-ink:#f3d4a2;--notice-line:#65533f;--stripe:#11202b;--code-bg:#071019;--code-ink:#c5e6ee;--on-accent:#09242d}
:root[data-theme="light"]{color-scheme:light;--bg:#f5f8fb;--surface:#fff;--surface2:#e7eef4;--panel:#fff;--ink:#172c3d;--muted:#425b6f;--line:#b9cbd9;--cyan:#006971;--amber:#815207;--red:#af3445;--green:#08734f;--blue:#235da8;--sidebar:#edf3f8;--notice-bg:#fff5df;--notice-ink:#684609;--notice-line:#cfaa61;--stripe:#edf3f8;--code-bg:#edf2f7;--code-ink:#214f61;--on-accent:#fff}
html[data-theme] body{background:var(--bg);color:var(--ink)}
.theme-control{display:flex;align-items:center;justify-content:space-between;gap:10px;font:14px/1.4 system-ui,sans-serif;color:var(--muted);margin-top:22px}
.theme-control select{width:auto;min-width:100px;max-width:100%;margin:0;padding:7px 9px;border:1px solid var(--line);border-radius:6px;background:var(--surface2);color:var(--ink);font:inherit}
.theme-control select:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.theme-standalone{display:flex;justify-content:flex-end;margin:0 auto;padding:12px 28px;max-width:1700px}.theme-standalone .theme-control{margin:0}
@media(max-width:850px){.sidebar .theme-control{justify-content:flex-start;margin-top:14px}.theme-standalone{padding:12px 18px}}