:root {
  --bg: #0a0b0d;
  --surface: #111317;
  --surface-2: #16191e;
  --border: #252a33;
  --text: #f2f4f7;
  --muted: #929aa5;
  --faint: #5f6874;
  --accent: #168bff;
  --accent-hover: #3da0ff;
  --good: #78db89;
  --warn: #ffc15e;
  --font: "Geist", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --container: 1120px;
}

* { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(900px 480px at 50% -120px, rgba(22, 139, 255, .12), transparent 72%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 10px 14px; background: var(--text); color: var(--bg); border-radius: 7px; }
.skip-link:focus { top: 16px; }
.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }
.mono { font-family: var(--mono); }
.eyebrow { color: #79baff; font: 600 11px/1.2 var(--mono); letter-spacing: .15em; text-transform: uppercase; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(255,255,255,.07);
  background: rgba(10, 11, 13, .86);
  backdrop-filter: blur(18px) saturate(130%);
}
.nav-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: -.02em; }
.brand-mark { width: 29px; height: 29px; display: grid; place-items: center; border-radius: 8px; border: 1px solid var(--border); background: #080a0d; }
.brand-mark svg { width: 19px; height: 19px; }
.nav-links { display: flex; align-items: center; gap: 22px; color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--text); }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 18px; border: 1px solid transparent; border-radius: 9px; font-weight: 620; transition: transform .16s ease, background .16s ease, border-color .16s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--accent); color: #f8fbff; box-shadow: 0 0 0 1px rgba(22,139,255,.45), 0 10px 32px rgba(22,139,255,.17); }
.button-primary:hover { background: var(--accent-hover); }
.button-secondary { background: var(--surface); border-color: var(--border); }
.button-secondary:hover { background: var(--surface-2); border-color: #3a424e; }
.button-small { min-height: 38px; padding: 0 14px; font-size: 13px; }

.hero { padding: 92px 0 62px; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .42; background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, #000, transparent 82%); }
.hero-inner { position: relative; max-width: 820px; }
.hero h1 { margin: 18px 0 22px; font-size: clamp(42px, 7vw, 76px); line-height: .98; letter-spacing: -.055em; font-weight: 640; text-wrap: balance; }
.hero-lede { max-width: 690px; margin: 0; color: var(--muted); font-size: clamp(18px, 2vw, 21px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 26px; color: var(--faint); font: 500 12px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .05em; }

.section { padding: 76px 0; }
.section-tight { padding: 42px 0; }
.section-head { max-width: 700px; margin-bottom: 36px; }
.section-head h2 { margin: 12px 0 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.06; letter-spacing: -.04em; }
.section-head p { margin: 16px 0 0; color: var(--muted); font-size: 17px; }
.rule { border: 0; border-top: 1px solid var(--border); margin: 0; }

.tool-shell { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(300px, .72fr); gap: 24px; align-items: start; }
.tool-panel, .result-panel { border: 1px solid var(--border); border-radius: 16px; background: var(--surface); }
.tool-panel { padding: clamp(22px, 4vw, 38px); }
.result-panel { position: sticky; top: 92px; padding: 28px; min-height: 360px; background: linear-gradient(160deg, rgba(22,139,255,.09), transparent 55%), var(--surface); }
.tool-title { margin: 0 0 8px; font-size: 24px; letter-spacing: -.03em; }
.tool-note { margin: 0 0 28px; color: var(--muted); }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font: 600 12px/1.4 var(--mono); letter-spacing: .05em; color: #c9d0d9; text-transform: uppercase; }
.input, .select { width: 100%; min-height: 50px; padding: 0 14px; color: var(--text); background: #0c0e12; border: 1px solid #2a303a; border-radius: 9px; outline: none; }
.input:focus, .select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(22,139,255,.13); }
.field-help { color: var(--faint); font-size: 12px; }
.tool-submit { width: 100%; margin-top: 22px; }
.error { display: none; margin: 14px 0 0; color: #ff9d91; font-size: 14px; }
.error.visible { display: block; }

.result-empty { color: var(--muted); }
.result-empty strong { display: block; margin-bottom: 12px; color: var(--text); font-size: 20px; }
.result-data { display: none; }
.result-data.visible { display: block; }
.result-kicker { color: #79baff; font: 600 11px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.result-number { margin: 10px 0 2px; font-size: clamp(46px, 7vw, 66px); line-height: 1; font-weight: 650; letter-spacing: -.06em; }
.result-unit { color: var(--muted); }
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin: 26px 0; overflow: hidden; border: 1px solid var(--border); border-radius: 10px; background: var(--border); }
.metric { padding: 14px; background: #0d0f13; }
.metric span { display: block; color: var(--faint); font: 500 10px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.metric strong { display: block; margin-top: 4px; font-size: 18px; }
.result-explain { margin: 0; color: var(--muted); font-size: 14px; }

.capture { margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--border); }
.capture h3 { margin: 0 0 6px; font-size: 18px; }
.capture p { margin: 0 0 14px; color: var(--muted); font-size: 13px; }
.capture-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.capture .input { min-height: 44px; }
.capture .button { min-height: 44px; }
.consent { margin-top: 8px !important; color: var(--faint) !important; font-size: 11px !important; }
.form-status { min-height: 20px; margin-top: 8px; color: var(--good); font-size: 12px; }

.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.tool-link { min-height: 210px; padding: 28px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.tool-link:hover { transform: translateY(-2px); border-color: #3b4654; background: var(--surface-2); }
.tool-index { color: var(--accent); font: 600 11px/1 var(--mono); }
.tool-link h3 { margin: 54px 0 10px; font-size: 24px; letter-spacing: -.035em; }
.tool-link p { margin: 0; color: var(--muted); }
.tool-link .arrow { display: inline-block; margin-top: 18px; color: #79baff; }

.content-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 72px; align-items: start; }
.prose { max-width: 720px; }
.prose h2 { margin: 54px 0 14px; font-size: 32px; line-height: 1.1; letter-spacing: -.035em; }
.prose h3 { margin: 34px 0 10px; font-size: 21px; }
.prose p, .prose li { color: #b0b7c0; }
.prose a { color: #79baff; text-decoration: underline; text-underline-offset: 3px; }
.prose ol, .prose ul { padding-left: 22px; }
.prose li + li { margin-top: 10px; }
.callout { margin: 34px 0; padding: 22px; border: 1px solid #294058; border-radius: 12px; background: rgba(22,139,255,.07); }
.callout strong { display: block; margin-bottom: 7px; }
.side-nav { position: sticky; top: 94px; padding: 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.side-nav strong { display: block; margin-bottom: 10px; }
.side-nav a { display: block; padding: 8px 0; color: var(--muted); font-size: 14px; }
.side-nav a:hover { color: var(--text); }

.game-strip { display: flex; flex-wrap: wrap; gap: 10px; }
.game-chip { padding: 9px 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: 13px; }
.game-chip:hover { border-color: #3a4450; color: var(--text); }

.cta-band { padding: 54px; border: 1px solid #28435f; border-radius: 18px; background: linear-gradient(130deg, rgba(22,139,255,.14), rgba(22,139,255,.025) 62%), var(--surface); }
.cta-band h2 { max-width: 680px; margin: 0 0 14px; font-size: clamp(32px, 5vw, 52px); line-height: 1.02; letter-spacing: -.045em; }
.cta-band p { max-width: 620px; margin: 0; color: var(--muted); }

.site-footer { margin-top: 70px; border-top: 1px solid var(--border); color: var(--faint); }
.footer-inner { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 22px; font: 500 12px/1.5 var(--mono); }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a:hover { color: var(--text); }

.success-box { max-width: 680px; margin: 96px auto 0; padding: 38px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); text-align: center; }
.success-mark { width: 48px; height: 48px; display: grid; place-items: center; margin: 0 auto 18px; border-radius: 50%; color: var(--good); border: 1px solid rgba(120,219,137,.35); background: rgba(120,219,137,.08); font-size: 22px; }
.success-box h1 { margin: 0 0 12px; font-size: clamp(34px, 6vw, 52px); letter-spacing: -.045em; }
.success-box p { color: var(--muted); }
.success-guide { text-align: left; }
.success-actions { justify-content: center; }
.saved-result { display: none; margin: 28px 0; padding: 18px; border: 1px solid #2d4056; border-radius: 10px; background: #0c1118; text-align: left; }
.saved-result.visible { display: block; }

@media (max-width: 800px) {
  .nav-links > a:not(.button) { display: none; }
  .hero { padding-top: 70px; }
  .tool-shell, .content-grid { grid-template-columns: 1fr; }
  .result-panel, .side-nav { position: static; }
  .tool-grid { grid-template-columns: 1fr; }
  .side-nav { display: none; }
  .cta-band { padding: 34px 24px; }
}

@media (max-width: 540px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .nav-inner { min-height: 60px; }
  .brand span:last-child { font-size: 15px; }
  .field-grid { grid-template-columns: 1fr; }
  .capture-row { grid-template-columns: 1fr; }
  .footer-inner { align-items: flex-start; flex-direction: column; padding: 28px 0; }
  .hero-actions .button { width: 100%; }
  .trust-row { display: grid; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}