:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #fff;
  --text: #18212f;
  --muted: #687386;
  --line: #dce2eb;
  --accent: #315efb;
  --danger: #b42318;
  --warn: #8a6100;
  font: 16px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
h1 { margin: 0 0 .4rem; font-size: clamp(1.7rem, 4vw, 2.3rem); }
p { color: var(--muted); }
.topbar { min-height: 64px; background: #101828; color: #fff; display: flex; align-items: center; padding: 12px max(24px, calc((100% - 1080px) / 2)); gap: 32px; }
.topbar a { color: #fff; }
.brand { font-weight: 750; }
.topbar nav { display: flex; gap: 20px; flex: 1; flex-wrap: wrap; }
.link-button { background: transparent; padding: 0; color: #fff; }
.container { max-width: 1080px; margin: 0 auto; padding: 42px 24px; }
.page-head, .section-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section-head { align-items: center; margin: 32px 0 12px; }
.section-head h2 { margin: 0; }
.page-head p { margin: .2rem 0; }
.button, button { display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 9px; background: var(--accent); color: #fff; padding: .7rem 1rem; font: inherit; font-weight: 650; cursor: pointer; }
.small-button { padding: .45rem .65rem; font-size: .82rem; }
.primary { font-size: 1.05rem; padding: .85rem 1.2rem; }
.danger { background: var(--danger); }
.cards { display: grid; gap: 14px; }
.card, .panel, .auth-card, .public-card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: 0 5px 20px rgba(16, 24, 40, .04); }
.card { display: flex; justify-content: space-between; gap: 16px; color: var(--text); }
.card small, .card span, td small { display: block; color: var(--muted); }
.card.static { display: block; }
.card-row { display: flex; justify-content: space-between; gap: 12px; }
.auth-card, .narrow { max-width: 520px; margin: 7vh auto; }
.public-card { max-width: 680px; margin: 2vh auto; }
.stack { display: grid; gap: 16px; }
.grid, .check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.check-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 8px; }
.check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.check input { width: auto; }
.steps { color: var(--muted); padding-left: 1.4rem; }
.steps li { margin: .55rem 0; }
fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
legend { font-weight: 700; padding: 0 6px; }
label { display: grid; gap: 6px; font-weight: 650; }
input, textarea, select { width: 100%; border: 1px solid #bfc8d6; border-radius: 8px; padding: .72rem .78rem; background: #fff; color: var(--text); font: inherit; }
textarea { resize: vertical; }
.code, code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.compact { min-width: 260px; padding: .45rem .55rem; }
.actions, .download-actions, .copy-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.actions, .download-actions { margin-top: 8px; }
.copy-row { flex-wrap: nowrap; min-width: 360px; }
.inline-form { display: grid; grid-template-columns: minmax(220px, 1fr) 150px 150px auto; align-items: end; gap: 12px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.alert, .warning, .empty { padding: 14px 16px; border-radius: 10px; margin: 16px 0; }
.alert { background: #fee4e2; color: var(--danger); }
.warning { background: #fff3cd; color: var(--warn); }
.empty { background: #fff; border: 1px dashed #bfc8d6; color: var(--muted); }
.hint, .muted { font-size: .9rem; color: var(--muted); }
.table-wrap { overflow: auto; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #f9fafb; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; color: var(--accent); font-size: .75rem; font-weight: 800; }
.qr { display: block; width: min(100%, 420px); margin: 20px auto; image-rendering: pixelated; }
details { margin-top: 20px; border-top: 1px solid var(--line); padding-top: 16px; }
summary { cursor: pointer; font-weight: 700; }
.rule-summary { margin-top: 14px; }
.rule-summary ul { columns: 2; }
.danger-zone { margin-top: 24px; border: 1px solid #f5b7b1; background: #fff5f4; border-radius: 12px; padding: 16px; }
.danger-zone p { margin-top: 0; color: var(--danger); }
pre { white-space: pre-wrap; overflow-wrap: anywhere; background: #101828; color: #e6edf7; padding: 16px; border-radius: 10px; font-size: .82rem; }
@media (max-width: 700px) {
  .topbar { height: auto; align-items: flex-start; flex-wrap: wrap; padding: 16px 20px; gap: 12px; }
  .topbar nav { order: 3; flex-basis: 100%; }
  .container { padding: 28px 16px; }
  .page-head { display: grid; }
  .grid, .inline-form { grid-template-columns: 1fr; }
  .card { display: block; }
  .card span { margin-top: 5px; }
  .rule-summary ul { columns: 1; }
  .copy-row { align-items: stretch; flex-direction: column; min-width: 220px; }
  .compact { min-width: 220px; }
}