:root {
  --bg: #f6f5f2; --panel: #ffffff; --ink: #1d1d1f; --muted: #6b6b70; --line: #e4e2dc;
  --brand: #8a1538; --brand-ink: #ffffff; --ok: #1f7a4d; --warn: #a15c00; --err: #b3261e; --accent: #f3e7eb;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #151416; --panel: #1f1e21; --ink: #ecebef; --muted: #a09fa6; --line: #333238;
          --brand: #c43d66; --accent: #3a2129; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--ink); }
a { color: var(--brand); text-decoration: none; } a:hover { text-decoration: underline; }
header.top { background: var(--brand); color: var(--brand-ink); }
header.top .wrap { display: flex; align-items: center; gap: 24px; padding: 14px 16px; }
header.top a { color: var(--brand-ink); opacity: .9; } header.top a.brand { font-weight: 700; font-size: 18px; opacity: 1; }
header.top nav { display: flex; gap: 16px; flex-wrap: wrap; margin-left: auto; font-size: 14px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
main { padding: 24px 0 64px; }
h1 { font-size: 26px; margin: 0 0 4px; } h2 { font-size: 19px; margin: 28px 0 10px; } h3 { font-size: 16px; margin: 18px 0 8px; }
.muted { color: var(--muted); } .small { font-size: 13px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.grid { display: grid; gap: 16px; } .g2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); } .g4 { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.stat { padding: 14px 16px; } .stat .v { font-size: 24px; font-weight: 650; } .stat .l { color: var(--muted); font-size: 13px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-wrap { overflow-x: auto; }
form.stack label, .field label { display: block; font-weight: 600; font-size: 13px; margin: 0 0 4px; }
.field { margin-bottom: 14px; }
input[type=text], input[type=number], input[type=password], input:not([type]), select, textarea {
  width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--ink); font: inherit; }
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
textarea.code { min-height: 420px; }
.check { display: flex; align-items: center; gap: 8px; font-weight: 500 !important; }
.check input { width: auto; }
.btn { display: inline-block; border: 1px solid var(--brand); background: var(--brand); color: var(--brand-ink); padding: 8px 14px;
       border-radius: 8px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none !important; }
.btn.secondary { background: transparent; color: var(--brand); } .btn.small { padding: 4px 10px; font-size: 13px; }
.btn.danger { background: var(--err); border-color: var(--err); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--accent); color: var(--brand); }
.badge.ok { background: #e3f3ea; color: var(--ok); } .badge.err { background: #fbe9e7; color: var(--err); } .badge.warn { background: #fdf0dc; color: var(--warn); }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; background: #e3f3ea; color: var(--ok); }
.flash.error { background: #fbe9e7; color: var(--err); }
.result { text-align: center; padding: 28px 18px; background: var(--accent); border-color: transparent; }
.result .price { font-size: 42px; font-weight: 750; color: var(--brand); }
.bar { height: 8px; background: var(--brand); border-radius: 4px; }
pre { background: var(--bg); border: 1px solid var(--line); padding: 12px; border-radius: 8px; overflow: auto; font-size: 12.5px; max-height: 480px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0 16px; }
.hero { padding: 8px 0 18px; } .hero p { margin: 4px 0 0; }
.chart-box { position: relative; height: 320px; }
@media (max-width: 640px) { .result .price { font-size: 32px; } header.top .wrap { flex-wrap: wrap; } }