:root {
  --bg: #f4f6f7;
  --card: #ffffff;
  --text: #182126;
  --muted: #68747a;
  --line: #dce2e5;
  --accent: #315c68;
  --accent-soft: #e8f0f2;
  --danger: #a83f42;
  --shadow: 0 12px 40px rgba(24, 33, 38, .07);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}
.page { width: min(720px, calc(100% - 32px)); margin: 0 auto; padding: 24px 0 56px; }
.topbar { display: flex; justify-content: space-between; align-items: center; }
.brand { font-weight: 800; letter-spacing: -.04em; font-size: 1.15rem; }
.brand span { font-weight: 500; }
.lang {
  border: 1px solid var(--line); background: var(--card); border-radius: 999px;
  padding: 7px 13px; cursor: pointer; color: var(--text); font-weight: 700;
}
.hero { padding: 64px 0 34px; }
.eyebrow { margin: 0 0 8px; text-transform: uppercase; letter-spacing: .13em; font-size: .72rem; font-weight: 800; color: var(--muted); }
h1 { font-size: clamp(2.5rem, 8vw, 4.4rem); line-height: .98; letter-spacing: -.065em; margin: 0; }
.intro { max-width: 560px; margin: 18px 0 0; font-size: 1.08rem; color: var(--muted); }
.card { background: var(--card); border: 1px solid rgba(220,226,229,.8); border-radius: 22px; box-shadow: var(--shadow); padding: 28px; margin-bottom: 16px; }
h2 { margin: 0 0 22px; font-size: 1.05rem; letter-spacing: -.02em; }
.field { border: 0; padding: 0; margin: 0 0 22px; }
label, legend { display: block; font-weight: 700; font-size: .9rem; margin-bottom: 8px; }
legend { padding: 0; }
.muted { color: var(--muted); font-weight: 500; }
.input-wrap { position: relative; }
.input-wrap input {
  width: 100%; padding: 14px 52px 14px 15px; border: 1px solid var(--line); border-radius: 12px;
  background: #fff; color: var(--text); font: inherit; font-size: 1rem; outline: none;
}
.input-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.input-wrap span { position: absolute; right: 15px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: .9rem; pointer-events: none; }
.choices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.choices.two { grid-template-columns: repeat(2, 1fr); }
.choice { margin: 0; cursor: pointer; }
.choice input { position: absolute; opacity: 0; }
.choice span {
  display: block; text-align: center; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 8px; font-weight: 600; background: #fff; transition: .15s ease;
}
.choice input:checked + span { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.choice input:focus-visible + span { outline: 3px solid var(--accent-soft); }
.calculate {
  width: 100%; border: 0; border-radius: 13px; padding: 15px; background: var(--text);
  color: #fff; font: inherit; font-weight: 800; cursor: pointer; margin-top: 4px;
}
.calculate:hover { transform: translateY(-1px); }
.result { text-align: center; padding: 36px 28px; }
.score { font-size: clamp(5rem, 20vw, 8rem); line-height: .9; font-weight: 800; letter-spacing: -.08em; margin: 12px 0 16px; }
.risk { font-size: 1.35rem; font-weight: 800; }
.mortality { color: var(--muted); margin: 5px 0 26px; }
.scale { height: 9px; border-radius: 99px; background: linear-gradient(90deg, #5b8060 0 35%, #c49a4d 35% 55%, #a84b4e 55% 100%); position: relative; }
.marker { position: absolute; top: 50%; width: 18px; height: 18px; border: 3px solid #fff; border-radius: 50%; background: var(--text); transform: translate(-50%, -50%); box-shadow: 0 1px 7px rgba(0,0,0,.25); }
.scale-labels { display: flex; justify-content: space-between; color: var(--muted); font-size: .72rem; margin-top: 7px; }
.method summary { cursor: pointer; font-weight: 800; }
.method-content { color: var(--muted); font-size: .9rem; padding-top: 15px; }
.method-content p { margin: 8px 0; }
footer { margin-top: 32px; color: var(--muted); font-size: .86rem; }
footer h2 { color: var(--text); font-size: .9rem; margin-bottom: 8px; }
.warning, .reference { border-top: 1px solid var(--line); padding-top: 22px; margin-top: 22px; }
.warning p, .reference p { margin: 8px 0; }
.privacy { font-size: .8rem; }
.small { font-size: .78rem; }
@media (max-width: 520px) {
  .page { width: min(100% - 22px, 720px); padding-top: 16px; }
  .hero { padding: 48px 0 25px; }
  .card { padding: 22px 18px; border-radius: 18px; }
  .choices { grid-template-columns: 1fr; }
  .choices.two { grid-template-columns: repeat(2, 1fr); }
}