:root {
  color-scheme: light;
  --bg: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6f6d68;
  --border: rgba(11, 11, 11, 0.12);
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --accent: #2a78d6;
  --accent-ink: #1c5cab;
  --accent-wash: rgba(42, 120, 214, 0.10);
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --good: #0ca30c;
  --good-ink: #006300;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --band: rgba(82, 81, 78, 0.08);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05), 0 4px 16px rgba(0, 0, 0, 0.04);
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #242422;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #9a988f;
    --border: rgba(255, 255, 255, 0.12);
    --grid: #2c2c2a;
    --axis: #383835;
    --accent: #3987e5;
    --accent-ink: #86b6ef;
    --accent-wash: rgba(57, 135, 229, 0.16);
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --good-ink: #0ca30c;
    --band: rgba(195, 194, 183, 0.10);
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0d0d; --surface: #1a1a19; --surface-2: #242422; --ink: #ffffff; --ink-2: #c3c2b7; --muted: #9a988f;
  --border: rgba(255, 255, 255, 0.12); --grid: #2c2c2a; --axis: #383835; --accent: #3987e5; --accent-ink: #86b6ef;
  --accent-wash: rgba(57, 135, 229, 0.16); --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70;
  --good-ink: #0ca30c; --band: rgba(195, 194, 183, 0.10); --shadow: none;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 var(--font);
}
a { color: var(--accent-ink); }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 0.5em; }
h1 { font-size: 1.6rem; letter-spacing: -0.01em; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.02rem; }
p { margin: 0 0 0.8em; }
code, pre, .mono { font-family: var(--mono); font-size: 0.86em; }
pre { white-space: pre-wrap; word-break: break-word; background: var(--surface-2); padding: 10px 12px; border-radius: 8px; max-height: 360px; overflow: auto; }
hr { border: 0; border-top: 1px solid var(--border); margin: 20px 0; }
.muted { color: var(--muted); }
.small { font-size: 0.86rem; }
.nowrap { white-space: nowrap; }
.hidden { display: none !important; }
.num { font-variant-numeric: tabular-nums; }
.right { text-align: right; }

/* layout */
.wrap { max-width: 900px; margin: 0 auto; padding: 24px 16px 80px; }
.topbar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 10; }
.topbar .brand { font-weight: 650; }
.topbar .spacer { flex: 1; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin: 16px 0; box-shadow: var(--shadow); }
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }
.card-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.card-head h2, .card-head h3 { margin: 0; }
.card-head .spacer { flex: 1; }
.step-num { display: inline-flex; width: 26px; height: 26px; border-radius: 50%; align-items: center; justify-content: center; background: var(--accent); color: #fff; font-size: 0.85rem; font-weight: 650; margin-right: 8px; flex: none; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px 18px; }
@media (max-width: 680px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.stack > * + * { margin-top: 10px; }

/* forms */
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field > label, .field > .label { font-weight: 560; font-size: 0.92rem; }
.field .help { color: var(--muted); font-size: 0.82rem; }
.field .req { color: var(--critical); }
input[type=text], input[type=email], input[type=number], input[type=password], input[type=datetime-local], input[type=date], select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; min-height: 38px;
}
textarea { min-height: 80px; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
.field.full { grid-column: 1 / -1; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 6px 14px; }
.check { display: flex; gap: 8px; align-items: flex-start; padding: 4px 0; cursor: pointer; }
.check input { margin-top: 3px; }
.radio-row { display: flex; flex-wrap: wrap; gap: 8px; }
.radio-row label { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; cursor: pointer; background: var(--bg); }
.radio-row input { margin: 0; }
.radio-row label:has(input:checked) { border-color: var(--accent); background: var(--accent-wash); }
.symptom-group { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-top: 8px; }
.symptom-group legend { font-weight: 600; padding: 0 4px; }

/* buttons */
button, .btn { font: inherit; cursor: pointer; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--ink); padding: 8px 14px; min-height: 38px; display: inline-flex; align-items: center; gap: 6px; text-decoration: none; }
button:hover, .btn:hover { background: var(--surface-2); }
button:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-big { padding: 12px 22px; font-size: 1.05rem; }
.btn-danger { color: var(--critical); }
.btn-mark { background: var(--critical); border-color: var(--critical); color: #fff; font-weight: 650; }
.btn-mark:hover { filter: brightness(0.95); background: var(--critical); }
.btn-small { padding: 4px 10px; min-height: 30px; font-size: 0.88rem; }
.linklike { background: none; border: 0; padding: 0; min-height: 0; color: var(--accent-ink); text-decoration: underline; }
.linklike:hover { background: none; }

/* stat tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.tile { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; background: var(--bg); }
.tile .t-label { font-size: 0.8rem; color: var(--ink-2); }
.tile .t-value { font-size: 1.35rem; font-weight: 620; margin-top: 2px; }
.tile .t-sub { font-size: 0.78rem; color: var(--muted); }

/* progress */
.phases { list-style: none; padding: 0; margin: 10px 0; }
.phases li { display: flex; gap: 10px; align-items: center; padding: 4px 0; }
.phases .ic { width: 18px; text-align: center; }
.phases li.running { font-weight: 600; }
.phases li.pending { color: var(--muted); }
.bar { height: 6px; background: var(--surface-2); border-radius: 3px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); transition: width 0.2s; }

/* notices */
.notice { border-left: 3px solid var(--accent); background: var(--accent-wash); padding: 10px 14px; border-radius: 0 8px 8px 0; margin: 12px 0; }
.notice.warn { border-left-color: var(--warning); background: rgba(250, 178, 25, 0.12); }
.notice.crit { border-left-color: var(--critical); background: rgba(208, 59, 59, 0.10); }
.banner-rc { display: inline-flex; gap: 6px; align-items: center; font-weight: 650; font-size: 0.82rem; letter-spacing: 0.02em; border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px; background: var(--surface-2); }
.banner-rc.confirmed { border-color: var(--critical); }

/* pills */
.pill { display: inline-flex; align-items: center; gap: 5px; border: 1px solid var(--border); border-radius: 999px; padding: 1px 9px; font-size: 0.8rem; white-space: nowrap; background: var(--bg); }
.pill i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.pill.r-normal i { background: var(--good); }
.pill.r-slow i { background: var(--warning); }
.pill.r-very-slow i { background: var(--serious); }
.pill.r-unusable i { background: var(--critical); }
.pill.r-yes i { background: var(--critical); }
.pill.r-no i { background: var(--good); }
.pill.r-na i { background: var(--axis); }
.pill.s-status { font-weight: 600; font-size: 0.74rem; letter-spacing: 0.02em; }
.pill.s-confirmed { border-color: var(--critical); }
.pill.s-ruled { text-decoration: line-through; color: var(--muted); }
.tag { display: inline-block; font-size: 0.74rem; border-radius: 4px; padding: 0 6px; background: var(--surface-2); color: var(--ink-2); }
.tag.mismatch { background: rgba(250, 178, 25, 0.2); color: var(--ink); }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 600; color: var(--ink-2); background: var(--surface-2); position: sticky; top: 0; }
tbody tr:hover { background: var(--accent-wash); }
tr.diff td { background: rgba(250, 178, 25, 0.13); }
tr.unrec td { color: var(--muted); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.excluded td { opacity: 0.5; }
.kv { display: grid; grid-template-columns: minmax(140px, 220px) 1fr; gap: 4px 14px; font-size: 0.92rem; }
.kv dt { color: var(--ink-2); }
.kv dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.meter { display: inline-block; width: 120px; height: 10px; background: var(--surface-2); border-radius: 0 4px 4px 0; vertical-align: middle; }
.meter > span { display: block; height: 100%; background: var(--series-1); border-radius: 0 4px 4px 0; }

/* charts */
.chart-wrap { position: relative; }
svg.chart { display: block; max-width: 100%; height: auto; font-family: var(--font); }
svg.chart .grid { stroke: var(--grid); stroke-width: 1; }
svg.chart .axis { stroke: var(--axis); stroke-width: 1; }
svg.chart .tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
svg.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
svg.chart .fail { stroke-width: 2; }
svg.chart .band { fill: var(--band); }
svg.chart .band-label { fill: var(--muted); font-size: 11px; }
svg.chart .marker { stroke: var(--critical); stroke-width: 1.5; }
svg.chart .marker-label { fill: var(--ink-2); font-size: 11px; }
svg.chart .crosshair { stroke: var(--axis); stroke-width: 1; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.82rem; color: var(--ink-2); margin-bottom: 6px; }
.legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }
.legend i.lg-marker { width: 2px; height: 12px; background: var(--critical); }
.tooltip { position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; font-size: 0.8rem; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12); min-width: 170px; z-index: 5; }
.tooltip i { display: inline-block; width: 10px; height: 3px; margin-right: 6px; vertical-align: middle; }
.tooltip .tip-time { color: var(--muted); margin-bottom: 2px; }

/* live monitor */
.live-bar { position: sticky; bottom: 12px; z-index: 20; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; box-shadow: 0 8px 28px rgba(0, 0, 0, 0.14); margin-top: 16px; }
.dot-live { width: 10px; height: 10px; border-radius: 50%; background: var(--critical); animation: pulse 1.4s infinite; }
@keyframes pulse { 50% { opacity: 0.3; } }
@media (prefers-reduced-motion: reduce) { .dot-live { animation: none; } }

/* toasts */
#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 100; max-width: min(420px, calc(100vw - 32px)); }
.toast { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 8px; padding: 10px 14px; box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15); }
.toast-error { border-left-color: var(--critical); }
.toast-ok { border-left-color: var(--good); }

/* admin shell */
.shell { display: grid; grid-template-columns: 220px minmax(0, 1fr); min-height: calc(100vh - 57px); }
.side { border-right: 1px solid var(--border); background: var(--surface); padding: 14px 10px; }
.side a { display: block; padding: 7px 10px; border-radius: 6px; color: var(--ink); text-decoration: none; }
.side a:hover { background: var(--surface-2); }
.side a.active { background: var(--accent-wash); color: var(--accent-ink); font-weight: 600; }
.side .sep { height: 1px; background: var(--border); margin: 10px 4px; }
.main { padding: 20px 24px 80px; min-width: 0; }
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side { display: flex; overflow-x: auto; gap: 4px; padding: 8px; border-right: 0; border-bottom: 1px solid var(--border); }
  .side a { white-space: nowrap; }
  .side .sep { display: none; }
  .main { padding: 16px 16px 80px; }
}
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 12px; }
.filters .field { min-width: 150px; }
.statement { border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; background: var(--bg); }
.statement p:last-child { margin-bottom: 0; }
.history { list-style: none; padding: 0; margin: 0; }
.history li { border-left: 2px solid var(--border); padding: 4px 0 10px 12px; }
details summary { cursor: pointer; }
.evidence-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.evidence-item { border: 1px solid var(--border); border-radius: 8px; padding: 8px; background: var(--bg); font-size: 0.86rem; min-width: 0; }
.evidence-item img, .evidence-item video { width: 100%; border-radius: 4px; background: #000; display: block; margin-bottom: 6px; max-height: 180px; object-fit: contain; }
.login { max-width: 380px; margin: 10vh auto; }