:root {
  color-scheme: light;
  --bg: #f6f7f4; --surface: #ffffff; --ink: #14170f; --ink2: #3b4236; --muted: #5d6657; --line: #d9ddd2;
  --accent: #1f5f3a; --accent-ink: #ffffff; --warn-bg: #fff4dc; --warn-ink: #6b4400; --bad: #a4281c; --focus: #1f5f3a;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #11140f; --surface: #1a1e17; --ink: #eef1e8; --ink2: #c8cfbf; --muted: #a2ac97; --line: #2c3428;
    --accent: #8fd6a6; --accent-ink: #0f1a12; --warn-bg: #3a2c0c; --warn-ink: #f3d28a; --bad: #ff9d90; --focus: #8fd6a6;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
.wrap { max-width: 640px; margin: 0 auto; padding: 0 16px; }
.top { border-bottom: 1px solid var(--line); background: var(--surface); }
.top .wrap { padding-top: 14px; padding-bottom: 14px; }
.brand { font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.7rem, 6vw, 2.4rem); line-height: 1.12; letter-spacing: -0.02em; margin: 26px 0 10px; }
h2 { font-size: 1.25rem; margin: 0 0 8px; }
p { margin: 0 0 12px; }
.lead { color: var(--ink2); }
.test { background: var(--warn-bg); color: var(--warn-ink); border-radius: 8px; padding: 10px 12px; margin-top: 18px; font-size: 0.95rem; font-weight: 600; }
fieldset { border: 1px solid var(--line); background: var(--surface); border-radius: 10px; padding: 12px 14px 14px; margin: 16px 0; min-width: 0; }
legend { font-weight: 700; padding: 0 4px; }
label { display: block; font-weight: 600; margin: 12px 0 4px; }
.opt { font-weight: 400; color: var(--muted); font-size: 0.9rem; margin-left: 4px; }
input, select { width: 100%; font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--muted); border-radius: 8px; padding: 10px 12px; min-height: 44px; }
label.check { display: flex; align-items: center; gap: 10px; font-weight: 500; margin: 10px 0 0; min-height: 44px; }
label.check input { width: 22px; height: 22px; min-height: 0; margin: 0; flex: none; accent-color: var(--accent); }
.ends { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 4px 18px; }
.endname { font-weight: 700; color: var(--ink2); margin: 8px 0 0; }
.hint { color: var(--muted); font-size: 0.92rem; margin: 10px 0 0; }
button { font: inherit; font-weight: 700; min-height: 48px; padding: 0 22px; margin-top: 18px; border: 0; border-radius: 10px; background: var(--accent); color: var(--accent-ink); cursor: pointer; width: 100%; }
button[disabled] { opacity: 0.6; cursor: default; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.formmsg { color: var(--bad); font-weight: 600; margin: 12px 0 0; }
.result, .cb { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 22px 0; }
.result:focus { outline: none; }
.range { font-size: clamp(1.9rem, 8vw, 2.6rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; margin: 4px 0 6px; font-variant-numeric: tabular-nums; }
.label { color: var(--muted); font-weight: 600; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.04em; margin: 0; }
.tag { display: inline-block; background: var(--warn-bg); color: var(--warn-ink); border-radius: 999px; padding: 2px 10px; font-size: 0.82rem; font-weight: 700; margin-bottom: 8px; }
.notice { color: var(--ink2); font-size: 0.93rem; }
.result ul { margin: 6px 0 12px; padding-left: 20px; color: var(--ink2); font-size: 0.93rem; }
.next { font-weight: 600; }
footer { color: var(--muted); font-size: 0.9rem; padding-top: 10px; padding-bottom: 28px; }
[hidden] { display: none !important; }
@media (min-width: 560px) { button { width: auto; } }