:root {
  color-scheme: light dark;
  --bg: #f7f8fa;
  --panel: #ffffff;
  --ink: #16212b;
  --muted: #5d6b7a;
  --line: #dde3ea;
  --accent: #0272be;
  --good: #17734b;
  --warn: #8a5300;
  --warn-bg: #fff6e5;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171c; --panel: #1a2027; --ink: #e8edf2; --muted: #9aa8b6;
    --line: #2b343d; --accent: #4aa8e8; --good: #4ec08a; --warn: #f0c47a; --warn-bg: #2a2114;
  }
}
* { 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;
}
main { max-width: 900px; margin: 0 auto; padding: 24px 16px 64px; }
header { margin-bottom: 20px; }
h1 { font-size: 1.6rem; margin: 0 0 4px; letter-spacing: -0.01em; }
h2 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.07em;
     color: var(--muted); margin: 0 0 14px; font-weight: 600; }
.sub { color: var(--muted); margin: 0; }
.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; margin-bottom: 16px;
}
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
label { display: flex; flex-direction: column; gap: 6px; font-size: 0.88rem; color: var(--muted); }
input, select {
  font: inherit; padding: 8px 10px; border: 1px solid var(--line);
  border-radius: 7px; background: var(--bg); color: var(--ink); width: 100%;
}
input[type=range] { padding: 0; }
.rangewrap { display: flex; align-items: center; gap: 10px; }
.rangewrap output { font-variant-numeric: tabular-nums; color: var(--ink); font-weight: 600; min-width: 3.2em; }
.labeltext { display: inline-flex; align-items: center; gap: 6px; }
.hint {
  display: inline-grid; place-items: center; width: 16px; height: 16px; border-radius: 50%;
  background: var(--line); color: var(--muted); font-size: 11px; cursor: help;
}
.result { border-left: 3px solid var(--accent); }
.rec { font-size: 1.45rem; font-weight: 650; letter-spacing: -0.01em; margin: 0 0 6px; }
.rec.buy { color: var(--good); }
.rec-sub { color: var(--muted); margin: 0; }
.rec-loading { color: var(--muted); }
.facts { display: grid; gap: 10px 20px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
         margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--line); }
.facts div { margin: 0; }
.facts dt { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.facts dd { margin: 2px 0 0; font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.chartwrap { overflow-x: auto; }
.chart { width: 100%; height: auto; display: block; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .area { fill: var(--accent); opacity: 0.10; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.chart .reservation { stroke: var(--good); stroke-width: 1.5; stroke-dasharray: 5 4; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .reservation-label { fill: var(--good); font-weight: 600; }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th, td { text-align: right; padding: 7px 10px; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
th:first-child, td:first-child { text-align: left; }
th { color: var(--muted); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.05em; }
tr.now td { background: color-mix(in srgb, var(--accent) 12%, transparent); font-weight: 650; }
tr.now td:first-child::after { content: " ← today"; color: var(--accent); font-weight: 600; }
.note { color: var(--muted); font-size: 0.85rem; margin: 10px 0 0; }
.note.warn { background: var(--warn-bg); color: var(--warn); padding: 9px 11px; border-radius: 7px; }
.caveats p { font-size: 0.9rem; margin: 0 0 10px; }
.caveats p:last-child { margin-bottom: 0; }
.small { font-size: 0.8rem; color: var(--muted); }
footer { margin-top: 26px; color: var(--muted); font-size: 0.85rem; }
footer p { margin: 0 0 4px; }
a { color: var(--accent); }
@media (max-width: 520px) { .rec { font-size: 1.2rem; } main { padding: 16px 12px 48px; } }