:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --ink: #1c1b18;
  --muted: #5c5852;
  --line: #cfc8bb;
  --card: #fffdf8;
  --accent: #1f4d3a;
  --warn: #7a3f12;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.45 "Segoe UI", system-ui, sans-serif; }
body { max-width: 52rem; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
h1, h2, h3 { font-weight: 650; letter-spacing: -0.02em; }
h1 { font-size: 1.75rem; margin: 0 0 0.4rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.6rem; }
h3 { font-size: 1rem; margin: 1.2rem 0 0.4rem; }
.lede { font-size: 1.05rem; margin: 0 0 1.25rem; }
.muted { color: var(--muted); font-size: 0.92rem; }
.warn { color: var(--warn); }
.rule { border: 0; border-top: 1px solid var(--line); margin: 1.5rem 0; }
.card { background: var(--card); border: 1px solid var(--line); padding: 1rem 1rem 0.75rem; }
label { display: block; font-size: 0.82rem; color: var(--muted); margin: 0.7rem 0 0.2rem; }
input { width: 100%; padding: 0.45rem 0.55rem; border: 1px solid var(--line); background: #fff; color: var(--ink); font: inherit; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 0.9rem; }
.out { margin-top: 1rem; }
.out dt { color: var(--muted); font-size: 0.8rem; }
.out dd { margin: 0 0 0.55rem; font-variant-numeric: tabular-nums; }
a { color: var(--accent); }
nav a { margin-right: 1rem; }
.table-wrap { overflow-x: auto; margin: 0.8rem 0 1.2rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { border: 1px solid var(--line); padding: 0.45rem 0.55rem; vertical-align: top; text-align: left; }
th { background: var(--card); font-weight: 650; }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.tag { font-size: 0.72rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.v-knob { margin: 0.6rem 0 0.2rem; }
.v-row { display: grid; grid-template-columns: 1fr 5.5rem auto; gap: 0.6rem; align-items: center; }
.v-row input[type="range"] { width: 100%; padding: 0; accent-color: var(--accent); }
.v-readout { font-variant-numeric: tabular-nums; font-size: 0.95rem; white-space: nowrap; }
.chart { display: block; width: 100%; height: auto; margin: 0.5rem 0 1rem; background: #fff; border: 1px solid var(--line); }