:root {
  --bg: #f5f6f8; --surface: #ffffff; --text: #1d2330; --muted: #5d6677; --border: #d9dde5;
  --primary: #3a4c7a; --primary-text: #ffffff; --ok: #1f7a4d; --ok-bg: #e3f4ea; --warn: #8a5a00; --warn-bg: #fff1d6;
  --bad: #a4262c; --bad-bg: #fde7e9; --info-bg: #e8eefb; --code-bg: #eef0f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171d; --surface: #1d2129; --text: #e6e9ef; --muted: #9aa3b2; --border: #333a47;
    --primary: #7d95d6; --primary-text: #0e1116; --ok: #5bd198; --ok-bg: #173226; --warn: #f2c265; --warn-bg: #3a2e14;
    --bad: #ff8a8f; --bad-bg: #3d1a1d; --info-bg: #1c2740; --code-bg: #262b35;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding: 12px 24px; background: var(--surface); border-bottom: 1px solid var(--border); }
.brand { font-weight: 700; letter-spacing: .2px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 14px; flex: 1; }
.nav a { color: var(--text); text-decoration: none; padding: 4px 2px; border-bottom: 2px solid transparent; }
.nav a:hover { border-bottom-color: var(--primary); }
.session { display: flex; align-items: center; gap: 12px; }
.session form { margin: 0; }
.who { color: var(--muted); }
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.5rem; margin: 0 0 16px; }
h2 { font-size: 1.1rem; margin: 0 0 10px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 16px; overflow-x: auto; }
.card.narrow { max-width: 460px; margin: 32px auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.big { font-size: 2rem; font-weight: 700; margin: 0; }
.muted { color: var(--muted); font-size: .92em; }
label { display: block; margin-bottom: 14px; font-weight: 600; font-size: .92em; }
input, select, textarea { display: block; width: 100%; margin-top: 6px; padding: 9px 10px; font: inherit; font-weight: 400; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px; }
input:focus, select:focus, textarea:focus, button:focus, a:focus { outline: 2px solid var(--primary); outline-offset: 1px; }
label.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
label.check input { width: auto; margin-top: 4px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 0 18px; }
.form-grid .wide { grid-column: 1 / -1; }
button, .button { display: inline-block; padding: 9px 16px; font: inherit; font-weight: 600; border-radius: 6px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); cursor: pointer; text-decoration: none; }
button.primary, .button.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
button.link { background: none; border: none; padding: 0; color: var(--primary); font-weight: 600; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
form.inline { display: flex; gap: 8px; margin-bottom: 16px; }
form.inline input { margin: 0; max-width: 360px; }
.alert { padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; border: 1px solid transparent; }
.alert.error { background: var(--bad-bg); color: var(--bad); border-color: var(--bad); }
.alert.success { background: var(--ok-bg); color: var(--ok); border-color: var(--ok); }
.alert.info { background: var(--info-bg); }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: .82em; font-weight: 700; text-decoration: none; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
table { width: 100%; border-collapse: collapse; font-size: .93em; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
tr.bad td, td.bad { color: var(--bad); }
code, .mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; }
textarea.mono, pre.mono { font-size: .88em; word-break: break-all; white-space: pre-wrap; }
pre { background: var(--code-bg); padding: 12px; border-radius: 6px; overflow-x: auto; }
.small { font-size: .82em; }
.nowrap { white-space: nowrap; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; }
details summary { cursor: pointer; margin: 8px 0; }
@media (max-width: 640px) { .top { padding: 12px 16px; } main { padding: 16px 12px 48px; } form.inline { flex-direction: column; } }