:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #1c2333;
  --muted: #64708a;
  --line: #e3e8f0;
  --primary: #2563eb;
  --primary-soft: #e8efff;
  --danger: #dc2626;
  --danger-soft: #fdecec;
  --ok: #059669;
  --ok-soft: #e6f6f0;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .05);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 15px; line-height: 1.55;
  display: flex; flex-direction: column; min-height: 100vh;
}
.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
main.wrap { flex: 1; padding-top: 28px; padding-bottom: 40px; }

.topbar { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 8px; font-size: 18px; color: var(--text); text-decoration: none; }
.brand b { color: var(--primary); }
.brand-mark { color: var(--primary); }
.menu { display: flex; gap: 4px; }
.menu a { padding: 8px 14px; border-radius: 999px; color: var(--muted); text-decoration: none; font-weight: 500; }
.menu a:hover { background: var(--bg); color: var(--text); }
.menu a.active { background: var(--primary-soft); color: var(--primary); }

h1 { font-size: 26px; margin: 0 0 4px; letter-spacing: -.01em; }
h2 { font-size: 17px; margin: 0 0 14px; }
.lead { color: var(--muted); margin: 0 0 24px; }

.grid { display: grid; gap: 16px; }
.g4 { grid-template-columns: repeat(4, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.span2 { grid-column: span 2; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); min-width: 0; }
.section { margin-top: 16px; }
.note { color: var(--muted); font-size: 13px; margin: 10px 0 0; }

.stat .k { color: var(--muted); font-size: 13px; font-weight: 500; }
.stat .v { font-size: 28px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat .s { color: var(--muted); font-size: 13px; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; background: var(--bg); }
.table-scroll { overflow-x: auto; }

.bar-row { display: grid; grid-template-columns: 130px 1fr 52px; align-items: center; gap: 10px; margin: 8px 0; font-size: 14px; }
.bar-track { background: var(--bg); border-radius: 999px; height: 10px; overflow: hidden; }
.bar-fill { background: var(--primary); height: 100%; border-radius: 999px; }
.bar-row .num { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }

.cm { display: grid; grid-template-columns: auto 1fr 1fr; gap: 6px; font-size: 13px; }
.cm div { padding: 10px; border-radius: 8px; text-align: center; }
.cm .h { color: var(--muted); font-weight: 600; }
.cm .tp { background: var(--ok-soft); color: var(--ok); font-weight: 700; font-size: 18px; }
.cm .fp { background: var(--danger-soft); color: var(--danger); font-weight: 700; font-size: 18px; }

pre.rules { background: #0f172a; color: #e2e8f0; padding: 16px; border-radius: 10px; font-size: 12px; overflow: auto; max-height: 360px; margin: 0; }

.chart-box { position: relative; height: 280px; }

form .fields { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 18px; }
form .fields .full { grid-column: 1 / -1; }
input[readonly] { background: var(--bg); color: var(--text); font-weight: 600; cursor: default; }
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
label small { color: var(--muted); font-weight: 400; }
input, select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; background: var(--surface); color: var(--text);
}
input:focus, select:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
.seg { display: flex; gap: 6px; }
.seg label { flex: 1; margin: 0; }
.seg input { display: none; }
.seg span { display: block; text-align: center; padding: 10px; border: 1px solid var(--line); border-radius: 10px; font-weight: 500; cursor: pointer; }
.seg input:checked + span { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }
.btn { margin-top: 20px; width: 100%; background: var(--primary); color: #fff; border: 0; padding: 12px; border-radius: 10px; font: inherit; font-weight: 600; cursor: pointer; }
.btn:hover { filter: brightness(1.08); }

.result { text-align: center; padding: 28px 20px; }
.result .badge { display: inline-block; padding: 6px 14px; border-radius: 999px; font-weight: 600; font-size: 13px; }
.result.risk .badge { background: var(--danger-soft); color: var(--danger); }
.result.safe .badge { background: var(--ok-soft); color: var(--ok); }
.result .big { font-size: 46px; font-weight: 700; margin: 12px 0 0; font-variant-numeric: tabular-nums; }
.result.risk .big { color: var(--danger); }
.result.safe .big { color: var(--ok); }
.meter { height: 12px; background: var(--bg); border-radius: 999px; overflow: hidden; margin: 14px 0 6px; }
.meter div { height: 100%; transition: width .5s; }
.placeholder { color: var(--muted); text-align: center; padding: 48px 12px; }
.error { color: var(--danger); background: var(--danger-soft); padding: 10px 12px; border-radius: 10px; margin-top: 14px; }

.footer { background: #0f172a; color: #cbd5e1; text-align: center; padding: 18px 0; font-size: 13.5px; }

@media (max-width: 900px) {
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3, .g2 { grid-template-columns: 1fr; }
  .span2 { grid-column: auto; }
}
@media (max-width: 560px) {
  .g4, form .fields { grid-template-columns: 1fr; }
  .topbar-inner { height: auto; flex-direction: column; align-items: flex-start; padding-top: 10px; padding-bottom: 10px; }
  .menu a { padding: 6px 10px; }
  .bar-row { grid-template-columns: 100px 1fr 46px; }
}