:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --text: #16191c;
  --dim: #5e6266;
  --stroke: #e6e3dc;
  --accent: #0f5c4a;
  --soft: #e3eeea;
  --warn: #a4473b;
  --btn: #0f5c4a;
  --on-btn: #f7f6f2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121416;
    --surface: #1a1d20;
    --text: #eceae4;
    --dim: #a3a5a3;
    --stroke: #2a2e32;
    --accent: #4fb394;
    --soft: #17302a;
    --warn: #d97a6a;
    --btn: #4fb394;
    --on-btn: #0c1f19;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 17px/1.6 "Geist", system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.mono { font-family: "Geist Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums; }
.wrap { max-width: 800px; margin: 0 auto; padding: 0 22px; }
header.top { display: flex; align-items: center; gap: 10px; padding: 22px 0; }
header.top img { width: 30px; height: 30px; border-radius: 8px; }
header.top b { font-weight: 500; font-size: 17px; letter-spacing: -.01em; }
header.top nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
header.top nav a { color: var(--dim); }
.hero { padding: 48px 0 26px; }
.hero h1 { font-weight: 300; font-size: clamp(40px, 8.5vw, 68px); line-height: 1.04; letter-spacing: -.035em; margin: 0 0 22px; }
.hero p { color: var(--dim); font-size: 19px; max-width: 34em; margin: 0 0 30px; }
.btn { display: inline-flex; align-items: center; gap: 10px; background: var(--btn); color: var(--on-btn); padding: 15px 26px; border-radius: 14px; font-weight: 500; }
.btn:hover { text-decoration: none; opacity: .92; }
.note { color: var(--dim); font-size: 14px; margin-top: 14px; }
.ledger { background: var(--surface); border: 1px solid var(--stroke); border-radius: 18px; padding: 8px 20px; margin: 34px 0 10px; }
.ledger .row { display: flex; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--stroke); }
.ledger .row:last-child { border-bottom: 0; }
.ledger .row span { flex: 1; }
.ledger .row small { display: block; color: var(--dim); font-size: 13px; }
.ledger .in { color: var(--accent); }
.balanced { color: var(--accent); font-size: 14px; margin: 6px 0 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 34px 0; }
.card { background: var(--surface); border: 1px solid var(--stroke); border-radius: 16px; padding: 20px; }
.card .k { color: var(--accent); font-size: 13px; font-weight: 500; }
.card h3 { font-weight: 500; font-size: 18px; margin: 6px 0 6px; letter-spacing: -.01em; }
.card p { color: var(--dim); margin: 0; font-size: 15px; }
h2 { font-weight: 300; font-size: 32px; letter-spacing: -.02em; margin: 56px 0 14px; }
ul.list { padding-left: 1.1em; }
ul.list li { margin: 6px 0; }
ul.list li::marker { color: var(--accent); }
.doc h1 { font-weight: 300; font-size: 42px; letter-spacing: -.03em; margin: 30px 0 6px; }
.doc h2 { font-size: 21px; font-weight: 500; margin: 34px 0 8px; letter-spacing: -.01em; }
.doc .meta { color: var(--dim); font-size: 15px; }
footer { border-top: 1px solid var(--stroke); margin-top: 70px; padding: 26px 0 40px; color: var(--dim); font-size: 14px; display: flex; flex-wrap: wrap; gap: 18px; }
footer a { color: var(--dim); }