:root {
  color-scheme: light dark;
  --bg: #f6f7fb; --surface: #fff; --text: #14181f; --muted: #5c6675; --line: #dde2ec;
  --primary: #2f5bd7; --primary-text: #fff; --danger: #b3261e; --ok: #0f7a48;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #11141a; --surface: #1a1e26; --text: #e8ebf0; --muted: #9aa3b2; --line: #2e3440; --primary: #7c9cf5; --primary-text: #0d1117; --danger: #f2877f; --ok: #5fd39a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, sans-serif; }
#app { max-width: 1040px; margin: 0 auto; padding: 16px; }
header { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }
header h1 { font-size: 18px; margin: 0 auto 0 0; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 16px 0 8px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.narrow { max-width: 420px; margin: 40px auto; }
label { display: block; font-weight: 600; margin: 10px 0 4px; }
input, select, textarea { width: 100%; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 7px 9px; }
input[type=checkbox] { width: auto; margin-right: 6px; }
input[type=color] { width: 56px; height: 34px; padding: 2px; }
input.short, select.short { width: auto; max-width: 220px; }
textarea { min-height: 70px; resize: vertical; }
button { font: inherit; border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 6px; padding: 7px 12px; cursor: pointer; }
button.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
button.danger { color: var(--danger); border-color: var(--danger); }
button[aria-pressed=true] { border-color: var(--primary); font-weight: 600; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 16px; }
.muted { color: var(--muted); }
.error { color: var(--danger); font-weight: 600; white-space: pre-wrap; }
.ok { color: var(--ok); font-weight: 600; }
.segment { border: 1px solid var(--line); border-radius: 8px; padding: 10px; margin: 10px 0; }
.chips { display: flex; flex-wrap: wrap; gap: 4px 12px; font-weight: 400; }
.chips label { font-weight: 400; margin: 0; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
code { word-break: break-all; }
ul.changes { max-height: 260px; overflow: auto; padding-left: 20px; }