:root { color-scheme: light dark; --bg:#fff; --fg:#1d1d1f; --mut:#6b7280; --line:#d9dce1; --acc:#2563a8; --accfg:#fff; --chip:#f3f6fa; --warn:#c0392b; }
@media (prefers-color-scheme: dark) { :root { --bg:#161618; --fg:#f0f0f0; --mut:#a0a4ab; --line:#3a3c41; --acc:#6aa7e8; --accfg:#10202f; --chip:#232427; --warn:#ef7a6c; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.top { position: sticky; top: 0; z-index: 2; background: var(--bg); border-bottom: 1px solid var(--line); padding: 10px 20px; display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; }
.brand { font-weight: 700; font-size: 17px; }
.tools { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.sel { display: flex; gap: 6px; align-items: center; }
.saved { color: var(--acc); font-size: 13px; min-width: 50px; }
main { max-width: 760px; margin: 0 auto; padding: 18px 20px 70px; }
h2 { margin: 28px 0 10px; font-size: 20px; font-weight: 600; }
.lead, .hint { color: var(--mut); }
.hint { font-size: 13px; margin: 6px 0; }
input[type=number], input[type=text], select, textarea, .key { font: inherit; background: var(--chip); color: var(--fg); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; }
.row { display: flex; gap: 10px; margin: 8px 0; align-items: center; flex-wrap: wrap; }
.row select { width: 220px; }
.key { width: 84px; text-align: center; cursor: pointer; font-weight: 600; font-size: 16px; }
.key:focus { outline: 2px solid var(--acc); }
.row input[type=number] { width: 84px; text-align: center; }
.x { padding: 4px 9px; color: var(--mut); }
.pref { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.pref b { display: block; }
.pref span { display: block; color: var(--mut); font-size: 13px; }
.pref input[type=checkbox] { width: 20px; height: 20px; accent-color: var(--acc); flex: none; }
.pref input[type=number] { width: 84px; }
textarea { width: 100%; }
button { font: inherit; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--chip); color: var(--fg); cursor: pointer; }
button:hover { border-color: var(--acc); }
button.primary { background: var(--acc); color: var(--accfg); border-color: var(--acc); font-weight: 600; padding: 8px 20px; border-radius: 999px; }
button.warn { color: var(--warn); }
.sm { display: flex; gap: 8px; align-items: center; margin: 4px 0; }