:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f6f7f9;
  color: #18202a;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
.shell { width: min(860px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 32px; }
.hero { margin-bottom: 28px; }
.eyebrow { margin: 0 0 8px; font-size: .82rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: #526273; }
h1 { margin: 0; font-size: clamp(2.2rem, 6vw, 4rem); line-height: 1.02; letter-spacing: -.04em; }
.lede { max-width: 720px; font-size: 1.08rem; line-height: 1.65; color: #52606d; }
.card { background: #fff; border: 1px solid #dde2e7; border-radius: 20px; padding: 24px; box-shadow: 0 8px 24px rgba(20, 30, 40, .05); }
.card + .card { margin-top: 22px; }
h2, h3 { margin-top: 0; }
.players { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
fieldset { border: 0; padding: 0; margin: 0; }
legend { font-weight: 800; margin-bottom: 10px; }
label { display: block; font-size: .93rem; font-weight: 700; }
select { width: 100%; margin-top: 7px; padding: 12px 14px; font: inherit; border: 1px solid #cbd2d9; border-radius: 12px; background: #fff; }
.mode-group { margin-top: 24px; }
.radio-row { display: flex; gap: 12px; align-items: flex-start; padding: 14px; border: 1px solid #d9dee4; border-radius: 14px; margin-top: 10px; cursor: pointer; }
.radio-row input { margin-top: 4px; }
.radio-row span { display: grid; gap: 4px; }
.radio-row small { font-weight: 400; color: #64717d; line-height: 1.45; }
.scope-note { margin: 22px 0; padding: 12px 14px; border-radius: 12px; background: #f3f5f7; color: #5d6874; font-size: .9rem; line-height: 1.5; }
button { font: inherit; }
.primary { border: 0; border-radius: 12px; padding: 13px 18px; font-weight: 800; background: #18202a; color: #fff; cursor: pointer; }
.primary:hover { opacity: .92; }
.result-status { display: inline-flex; align-items: center; padding: 7px 10px; border-radius: 999px; background: #eef1f4; font-size: .78rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
.result h2 { margin: 14px 0 8px; }
.result p { color: #52606d; line-height: 1.6; }
.requirements { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 20px; }
.requirement-box { border: 1px solid #dde2e7; border-radius: 14px; padding: 16px; }
.requirement-box h3 { margin-bottom: 10px; }
ul { padding-left: 20px; line-height: 1.65; }
.calc { margin-top: 22px; padding-top: 20px; border-top: 1px solid #e5e9ed; }
.check-list { display: grid; gap: 8px; margin: 12px 0 16px; }
.check-list label { font-weight: 500; }
.missing { background: #f8f9fa; border-radius: 12px; padding: 14px; }
footer { width: min(860px, calc(100% - 32px)); margin: 0 auto; padding: 0 0 44px; color: #707b86; font-size: .84rem; line-height: 1.5; }
@media (max-width: 680px) {
  .shell { padding-top: 34px; }
  .players, .requirements { grid-template-columns: 1fr; }
  .card { padding: 19px; border-radius: 16px; }
}