:root {
  --ink: #1b1d21; --muted: #5d6470; --line: #e3e5e9; --bg: #fbfbfa; --card: #ffffff;
  --accent: #1f5bd8; --accent-ink: #ffffff;
  --ok: #1d7a4a; --ok-bg: #e7f5ed;
  --mid: #8a5a00; --mid-bg: #fdf3dc;
  --bad: #b3261e; --bad-bg: #fbe9e7;
  --none: #5d6470; --none-bg: #eef0f3;
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eceef1; --muted: #a3a9b4; --line: #2c3038; --bg: #131519; --card: #1b1e24;
    --accent: #7aa7ff; --accent-ink: #0d1117;
    --ok: #6fd39d; --ok-bg: #16301f; --mid: #f0c060; --mid-bg: #33280f;
    --bad: #ff8a80; --bad-bg: #3a1a18; --none: #a3a9b4; --none-bg: #23262d;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 18px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.fine { color: var(--muted); font-size: 13px; margin: 12px 0 0; }

.top { border-bottom: 1px solid var(--line); padding: 28px 0 18px; }
.top h1 { margin: 0; font-size: 28px; letter-spacing: -0.01em; }
.lede { margin: 4px 0 0; color: var(--muted); }

.search { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin: 22px 0 8px; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field.grow { flex: 1 1 260px; }
label { font-size: 13px; font-weight: 600; color: var(--muted); }
input, select { font: inherit; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--ink); min-height: 46px; }
input:focus, select:focus, button:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent); outline-offset: 1px; }
button { font: inherit; font-weight: 600; padding: 11px 20px; min-height: 46px; border: 0; border-radius: 10px;
  background: var(--accent); color: var(--accent-ink); cursor: pointer; }
button.secondary { background: var(--none-bg); color: var(--ink); }
button:disabled { opacity: .6; cursor: wait; }

.notice { margin: 14px 0; padding: 14px 16px; border-radius: var(--radius); background: var(--none-bg); }
.notice .actions { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }

.building { margin: 26px 0 10px; }
.building h2 { margin: 0; font-size: 22px; }
.building p { margin: 2px 0 0; }
.warn { background: var(--mid-bg); color: var(--mid); padding: 8px 12px; border-radius: 8px; margin-top: 10px !important; font-size: 14px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 18px 16px; margin: 14px 0; }
.card h3 { margin: 0 0 10px; font-size: 16px; }
.loading { color: var(--muted); margin: 0; }
.loading::after { content: ""; display: inline-block; width: 1.2em; text-align: left; animation: dots 1.4s steps(4, end) infinite; }
@keyframes dots { 0% { content: ""; } 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } }
@media (prefers-reduced-motion: reduce) { .loading::after { animation: none; content: "..."; } }

.level { display: inline-block; font-weight: 700; padding: 6px 12px; border-radius: 999px; font-size: 15px; }
.level.few { background: var(--ok-bg); color: var(--ok); }
.level.some { background: var(--mid-bg); color: var(--mid); }
.level.serious { background: var(--bad-bg); color: var(--bad); }
.level.none { background: var(--none-bg); color: var(--none); }
.because { margin: 10px 0 14px; }

.bars { display: grid; gap: 12px; }
.bar-label { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; }
.bar { height: 8px; background: var(--none-bg); border-radius: 999px; overflow: hidden; margin-top: 4px; }
.bar > span { display: block; height: 100%; border-radius: 999px; background: var(--muted); }
.bar > span.hi { background: var(--bad); } .bar > span.md { background: var(--mid); } .bar > span.lo { background: var(--ok); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 0 0 12px; }
.stat { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.stat b { display: block; font-size: 22px; line-height: 1.2; }
.stat span { font-size: 13px; color: var(--muted); }
.classes { margin: 0 0 12px; padding-left: 18px; }
.classes li { margin: 3px 0; }
details { margin-top: 8px; }
summary { cursor: pointer; font-weight: 600; font-size: 14px; }
.example { font-size: 13px; color: var(--muted); border-left: 3px solid var(--line); padding: 2px 10px; margin: 8px 0; }
.rows { margin: 0; padding: 0; list-style: none; }
.rows li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.rows li:last-child { border-bottom: 0; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .cols { grid-template-columns: 1fr; } }
.cols h4 { margin: 0 0 6px; font-size: 14px; color: var(--muted); }

.summary .headline { font-size: 17px; font-weight: 600; margin: 0 0 10px; }
.summary h4 { margin: 14px 0 4px; font-size: 14px; }
.summary ul { margin: 0; padding-left: 18px; }
.summary li { margin: 4px 0; }

.sources { font-size: 13px; color: var(--muted); margin: 20px 0 8px; }
.about { margin: 34px 0 48px; }
.about h2 { font-size: 18px; }
.about li { margin: 6px 0; }