:root {
  --bg: #f7f8f6; --surface: #ffffff; --text: #17201b; --muted: #4c5a52; --line: #d5ddd8;
  --accent: #146c43; --accent-text: #ffffff; --accent-soft: #e3f1e9; --warn-bg: #fff4e0; --warn: #7a4300;
  --err: #a1261b; --radius: 12px; --focus: #0b57d0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1412; --surface: #18201c; --text: #e8eeea; --muted: #a9b7af; --line: #2c3832;
    --accent: #3fbf7f; --accent-text: #06170e; --accent-soft: #173326; --warn-bg: #3a2a10; --warn: #ffd08a;
    --err: #ff9b90; --focus: #8ab4f8;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.55; font-size: 1.0625rem; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, label.drop:focus-within {
  outline: 3px solid var(--focus); outline-offset: 2px;
}
.skip { position: absolute; left: -999px; } .skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px; z-index: 2; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.top { background: var(--surface); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.2rem; color: var(--text); text-decoration: none; }
.logo { width: 26px; height: 26px; border-radius: 7px; background: var(--accent); box-shadow: inset 0 0 0 6px var(--accent), inset 0 0 0 9px var(--accent-text); }
.top nav { display: flex; gap: 4px; }
.top nav a { padding: 10px 12px; min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; color: var(--text); border-radius: 8px; }
.top nav a:hover { background: var(--accent-soft); }
main.wrap { padding-top: 32px; padding-bottom: 48px; }
h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
h2 { font-size: 1.25rem; margin: 28px 0 8px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 70ch; }
.muted { color: var(--muted); } .small { font-size: 0.9rem; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin: 16px 0; }
.card h2 { margin-top: 0; }
.grid3 { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-top: 24px; }
.grid3 .card { margin: 0; }
.upload { max-width: 640px; }
.drop { display: grid; gap: 4px; padding: 28px 20px; border: 2px dashed var(--line); border-radius: var(--radius); cursor: pointer; text-align: center; margin-bottom: 16px; }
.drop:hover { border-color: var(--accent); background: var(--accent-soft); }
.drop-title { font-weight: 600; overflow-wrap: anywhere; }
.drop input { margin: 12px auto 0; max-width: 100%; font-size: 1rem; min-height: 44px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 10px;
  border: 1px solid var(--accent); background: var(--surface); color: var(--accent); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn.primary { background: var(--accent); color: var(--accent-text); }
.btn:hover { filter: brightness(1.08); }
.busy { display: none; } .is-busy .busy { display: inline; } .is-busy .idle { display: none; } .is-busy .btn { opacity: .8; cursor: progress; }
.alert { background: var(--warn-bg); color: var(--warn); padding: 12px 14px; border-radius: 8px; }
.ok { background: var(--accent-soft); padding: 12px 14px; border-radius: 8px; }
.err { color: var(--err); font-size: .95rem; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
caption { text-align: left; font-weight: 600; padding-bottom: 8px; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.scroll { overflow-x: auto; }
.prices { max-width: 520px; background: var(--surface); border-radius: var(--radius); }
.facts { display: flex; flex-wrap: wrap; gap: 12px 32px; margin: 0 0 16px; }
.facts dt { color: var(--muted); font-size: .9rem; } .facts dd { margin: 0; font-size: 1.4rem; font-weight: 700; }
.pay .price { font-size: 2rem; font-weight: 800; margin: 0 0 12px; } .pay .price span { font-size: 1rem; font-weight: 400; color: var(--muted); }
.stack { display: grid; gap: 14px; max-width: 520px; }
.field { display: grid; gap: 4px; }
.field label { font-weight: 600; }
.field input, .field select { font: inherit; min-height: 44px; padding: 8px 10px; border: 1px solid var(--muted); border-radius: 8px; background: var(--surface); color: var(--text); }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; margin: 8px 0; padding: 0 16px; }
.faq summary { cursor: pointer; padding: 12px 0; min-height: 44px; font-weight: 600; }
.guide { max-width: 760px; }
.guide li { margin: 6px 0; }
.foot { border-top: 1px solid var(--line); background: var(--surface); padding: 24px 0; font-size: .95rem; }
.foot nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-bottom: 8px; }
.foot nav a, .foot p a { display: inline-block; padding: 6px 0; }