[hidden] { display: none !important; }
:root {
  --bg: #f5f7f8; --card: #fff; --ink: #142028; --muted: #5b6a73; --line: #d9e0e4;
  --accent: #0e6b66; --accent-soft: #d8ece9; --bad: #b3261e; --bad-soft: #f8dcd9; --good: #2d7a3a; --warn: #b46a00;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1619; --card: #162126; --ink: #e4ecef; --muted: #93a4ad; --line: #2a3a41;
    --accent: #4fc2b8; --accent-soft: #173a38; --bad: #f07b72; --bad-soft: #3e1d1b; --good: #74c983; --warn: #f0a840; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, "Segoe UI", sans-serif; }
.wrap { max-width: 1000px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
.bar { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; }
.bar-in { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; padding-block: 12px; }
.logo { font-size: 18px; color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: 4px 14px; }
nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
nav a.on { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
main { padding-block: 20px 60px; }
section { display: grid; gap: 14px; }
h1 { margin: 0; font-size: 26px; }
h2 { margin: 0 0 8px; font-size: 16px; }
.lede, .muted { color: var(--muted); margin: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; min-width: 0; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.form { display: grid; gap: 8px; max-width: 460px; }
input, select { font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 8px; width: 100%; }
fieldset { border: 1px solid var(--line); border-radius: 6px; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 4px; font-size: 13px; }
.checks input { width: auto; }
button { font: 600 14px system-ui, sans-serif; border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 8px; padding: 9px 14px; cursor: pointer; justify-self: start; }
button.ghost { background: transparent; color: var(--accent); }
button.link { background: none; border: 0; color: var(--muted); padding: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.msg { margin: 0; color: var(--muted); }
.msg.err { color: var(--bad); }
.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 520px; }
th { text-align: left; font-size: 12px; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: .05em; }
th, td { padding: 8px; border-bottom: 1px solid var(--line); }
.num { font-variant-numeric: tabular-nums; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.tile b { display: block; font-size: 28px; font-variant-numeric: tabular-nums; }
.tile span { color: var(--muted); font-size: 13px; }
.hbar { display: grid; grid-template-columns: minmax(120px, 220px) 1fr 48px; gap: 8px; align-items: center; font-size: 13px; margin: 4px 0; }
.hbar .track { background: var(--accent-soft); border-radius: 4px; height: 10px; overflow: hidden; }
.hbar .fill { background: var(--accent); height: 100%; }
.hbar .fill.low { background: var(--bad); }
.block { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.block:last-child { border-bottom: 0; }
.block small { color: var(--muted); grid-column: 1 / -1; }
.miss { padding: 6px 0; border-bottom: 1px solid var(--line); }
.miss small { color: var(--muted); display: block; }
svg text { fill: var(--muted); font-size: 11px; }
svg .line { stroke: var(--accent); fill: none; stroke-width: 2; }
svg .dot { fill: var(--accent); }
svg .grid { stroke: var(--line); }
textarea { font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 8px; width: 100%; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.chat-card { display: grid; gap: 12px; }
.chat { display: grid; gap: 8px; max-height: 60vh; overflow-y: auto; }
.chat-form { max-width: none; }
.bubble { padding: 9px 12px; border-radius: 10px; white-space: pre-wrap; max-width: 85%; }
.bubble.me { background: var(--accent-soft); justify-self: end; }
.bubble.ai { background: var(--bg); border: 1px solid var(--line); }
.rq { display: grid; gap: 8px; }
.rq ol { margin: 0; padding-left: 20px; }
.rq .ans { color: var(--good); font-weight: 600; }
.rq .reason { background: var(--bad-soft); border-radius: 6px; padding: 6px 8px; }
a { color: var(--accent); }
.stack { display: grid; gap: 10px; align-content: start; min-width: 0; }
.form.wide { max-width: none; }
.fc { border: 1px solid var(--line); border-radius: 8px; padding: 10px; display: grid; gap: 6px; }
.fc .back { color: var(--muted); }
.qcard { display: grid; gap: 6px; }
.choice { display: block; width: 100%; text-align: left; background: var(--card); color: var(--ink); border: 1px solid var(--line); font-weight: 500; }
.choice.right { background: var(--accent-soft); border-color: var(--good); }
.choice.wrong { background: var(--bad-soft); border-color: var(--bad); }
.note summary { cursor: pointer; font-weight: 600; }
.note ul { margin: 6px 0; padding-left: 20px; }
.warnline { color: var(--warn); }