:root {
  --bg: #f4f7f2; --card: #ffffff; --ink: #10261c; --muted: #5a6f63; --line: #dbe5dc;
  --brand: #0f3d2e; --brand-ink: #ffffff; --accent: #f5c451; --ok: #1a7f4b; --bad: #b3261e; --chip: #eaf2ea;
  --shadow: 0 1px 2px rgba(16,38,28,.06), 0 8px 24px rgba(16,38,28,.06);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b1511; --card: #12201a; --ink: #e8f3ec; --muted: #9bb3a5; --line: #23372d; --brand: #f5c451; --brand-ink: #10261c; --chip: #1a2d24; --shadow: none; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.hidden { display: none !important; }
.top { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; max-width: 1040px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: -.01em; }
.top-right { display: flex; gap: 8px; align-items: center; }
main { max-width: 1040px; margin: 0 auto; padding: 0 16px 40px; }
.hero { padding: 18px 0 22px; }
h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.1; margin: 0 0 10px; letter-spacing: -.02em; }
.sub { color: var(--muted); max-width: 640px; margin: 0; font-size: 17px; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 16px; margin: 0 0 6px; }
.grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px; box-shadow: var(--shadow); }
.field { margin: 14px 0; }
.field.two { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--muted); }
input, select { width: 100%; padding: 11px 12px; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; }
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.row { display: flex; gap: 8px; }
.btn { font: inherit; font-weight: 600; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 10px 14px; cursor: pointer; }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: transparent; }
.btn.ghost { background: transparent; }
.btn.small { padding: 8px 12px; white-space: nowrap; }
.btn.wide { width: 100%; padding: 13px; font-size: 16px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg button { flex: 1 1 90px; padding: 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); font: inherit; cursor: pointer; text-align: left; }
.seg button b { display: block; font-size: 15px; }
.seg button span { color: var(--muted); font-size: 12px; }
.seg button[aria-pressed="true"] { border-color: var(--brand); box-shadow: inset 0 0 0 1px var(--brand); background: var(--chip); }
.hint { color: var(--muted); font-size: 12.5px; display: block; margin-top: 6px; }
.error { color: var(--bad); font-size: 14px; margin-top: 10px; min-height: 1px; }
.big { font-size: 38px; font-weight: 800; letter-spacing: -.02em; margin: 2px 0 12px; }
.big small { font-size: 16px; font-weight: 600; color: var(--muted); }
.kv { margin: 0 0 14px; }
.kv > div { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--line); }
.kv dt { color: var(--muted); } .kv dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }
.steps, .how { padding-left: 20px; margin: 0 0 12px; }
.steps li { margin: 8px 0; color: var(--muted); }
.steps li.on { color: var(--ink); font-weight: 600; }
.steps li.done { color: var(--ok); }
.steps li.done::marker { content: "✓ "; }
.how li { margin: 8px 0; }
.receipt { border-top: 1px solid var(--line); padding-top: 12px; font-size: 14px; word-break: break-word; }
.receipt a { color: var(--ink); }
.receipt .ok { color: var(--ok); font-weight: 700; font-size: 18px; }
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0; }
@media (max-width: 820px) { .tiles { grid-template-columns: 1fr; } }
.tiles article { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.tiles p { margin: 0; color: var(--muted); font-size: 14px; }
.agents pre { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px; overflow-x: auto; font-size: 12.5px; }
.links a { color: var(--ink); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 8px; }
.stats div { background: var(--chip); border-radius: 10px; padding: 8px 10px; }
.stats b { display: block; font-size: 17px; } .stats span { font-size: 11.5px; color: var(--muted); }
footer { max-width: 1040px; margin: 0 auto; padding: 8px 16px 32px; color: var(--muted); font-size: 12.5px; display: flex; flex-direction: column; gap: 6px; }
footer a { color: var(--muted); }