:root {
  --ink: #1b2421;
  --muted: #5b6863;
  --line: #d9e0dd;
  --bg: #f6f8f7;
  --card: #fff;
  --brand: #0f5c4d;
  --brand-ink: #fff;
  --ok: #17753a;
  --bad: #b3261e;
  --radius: 12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }
.top { background: var(--brand); padding: 10px 16px; }
.brand { color: var(--brand-ink); font-weight: 700; text-decoration: none; }
.wrap { max-width: 640px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.5rem; line-height: 1.25; margin: 8px 0; }
.lead { color: var(--muted); margin-top: 0; }
.tool { margin: 16px 0; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.step-title { font-size: 1rem; margin: 0 0 10px; display: flex; align-items: center; gap: 8px; }
.num { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); font-size: .85rem; }
.drop { display: grid; gap: 4px; justify-items: center; padding: 22px 12px; border: 2px dashed var(--line); border-radius: var(--radius); cursor: pointer; text-align: center; }
.drop.over, .drop:focus-within { border-color: var(--brand); background: #eef6f3; }
.drop-main { font-weight: 600; color: var(--brand); }
.drop-sub, .muted, .file-info { color: var(--muted); font-size: .9rem; }
.file-info { margin: 8px 0 0; }
select, input[type=range] { width: 100%; }
select { font: inherit; padding: 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; min-height: 44px; }
.rule { font-size: .88rem; color: var(--muted); margin-top: 10px; }
.rule blockquote { margin: 6px 0; padding: 6px 10px; border-left: 3px solid var(--brand); background: #f1f5f3; color: var(--ink); }
.rule a { color: var(--brand); word-break: break-all; }
.offset { margin-top: 12px; font-size: .9rem; }
.result img { display: block; max-width: 100%; max-height: 360px; margin: 8px auto; border: 1px solid var(--line); background: repeating-conic-gradient(#eee 0 25%, #fff 0 50%) 0 0 / 16px 16px; }
.facts { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; font-size: .92rem; margin: 8px 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
.ok { color: var(--ok); font-weight: 600; }
.bad { color: var(--bad); font-weight: 600; }
.btn { display: block; text-align: center; background: var(--brand); color: var(--brand-ink); padding: 12px; border-radius: 10px; font-weight: 700; text-decoration: none; min-height: 44px; }
.privacy { font-size: .9rem; background: #eef6f3; border-radius: var(--radius); padding: 10px 12px; }
.notes { font-size: .92rem; }
.notes h2 { font-size: 1rem; }
.notes ul { padding-left: 18px; }
.foot { text-align: center; color: var(--muted); font-size: .82rem; padding: 16px; }
.gone { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.gone code { background: #f1f5f3; padding: 1px 6px; border-radius: 4px; word-break: break-all; }
.report { display: grid; gap: 8px; margin-top: 10px; }
.report textarea { font: inherit; width: 100%; min-height: 70px; padding: 8px; border: 1px solid var(--line); border-radius: 8px; }
.report button { font: inherit; justify-self: start; padding: 8px 14px; border: 1px solid var(--brand); color: var(--brand); background: #fff; border-radius: 8px; min-height: 40px; }