:root { color-scheme: light; --ink:#172b43; --muted:#475569; --line:#cbd5e1; --surface:#fff; --background:#f5f7fa; --accent:#1e3a5f; --danger:#9b1c1c; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--background); color: var(--ink); font: 16px/1.55 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
header { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 16px max(24px, calc((100% - 960px) / 2)); border-bottom: 1px solid var(--line); background: var(--surface); }
header strong { display: block; } header span { color: var(--muted); font-size: 14px; }
main { max-width: 960px; padding: 24px; margin: auto; }
h1 { margin: 8px 0 12px; font-size: 28px; line-height: 1.25; }
h2 { font-size: 19px; margin: 0 0 12px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 16px 0; overflow-x: auto; }
.field { margin-bottom: 16px; }
.field.check { display: flex; align-items: center; gap: 10px; }
.field.check input { width: auto; min-height: 0; }
label { display: block; margin-bottom: 6px; font-weight: 600; }
.field.check label { margin: 0; }
input { width: 100%; min-height: 42px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 6px; font: inherit; }
button { min-height: 42px; padding: 8px 18px; margin: 4px 8px 4px 0; background: var(--accent); color: #fff; border: 1px solid var(--accent); border-radius: 6px; font: inherit; font-weight: 600; cursor: pointer; }
button.secondary { background: var(--surface); color: var(--accent); }
button.danger { background: var(--surface); color: var(--danger); border-color: var(--danger); }
button.link { background: none; border: 0; color: var(--accent); padding: 0; min-height: 0; text-decoration: underline; }
nav { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 8px; flex-wrap: wrap; }
.tab { background: none; color: var(--muted); border: 0; border-bottom: 3px solid transparent; border-radius: 0; margin: 0; }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.hint { color: var(--muted); font-size: 14px; }
#flash { padding: 12px 16px; border-radius: 8px; background: #e0f2fe; border: 1px solid #7dd3fc; }
#flash.error { background: #fee2e2; border-color: #fca5a5; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
tbody tr.pick { cursor: pointer; } tbody tr.pick:hover { background: #f1f5f9; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; word-break: break-all; white-space: normal; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
@media (max-width: 560px) { header { flex-direction: column; align-items: flex-start; } }