:root {
  --accent: #2563eb;
  --accent-action: #2563eb;
  --accent-soft: #dbeafe;
  --background: #f4f6f8;
  --border: #d8dee9;
  --ink: #101828;
  --muted: #586174;
  --navy: #0f1f3d;
  --surface: #ffffff;
  --surface-muted: #eef2f6;
  color-scheme: light;
  font-family:
    Inter,
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #60a5fa;
    --accent-action: #2563eb;
    --accent-soft: #172554;
    --background: #0b1120;
    --border: #26344d;
    --ink: #e5e7eb;
    --muted: #a7b4c7;
    --navy: #f8fafc;
    --surface: #111827;
    --surface-muted: #172033;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(
      circle at 85% 8%,
      color-mix(in srgb, var(--accent) 12%, transparent),
      transparent 27rem
    ),
    var(--background);
  color: var(--ink);
  margin: 0;
  min-height: 100vh;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0)
    env(safe-area-inset-left, 0);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 3px;
}

.shell {
  margin: 0 auto;
  max-width: 1120px;
  padding: 22px clamp(18px, 4vw, 48px) 36px;
}

.site-header {
  align-items: center;
  display: flex;
  gap: 20px;
  justify-content: space-between;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 11px;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: var(--accent-action);
  border-radius: 12px;
  color: #ffffff;
  display: inline-flex;
  font-size: 18px;
  font-weight: 900;
  height: 40px;
  justify-content: center;
  width: 40px;
}

.brand-name {
  color: var(--navy);
  display: block;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.35px;
}

.brand-subtitle {
  color: var(--muted);
  display: block;
  font-size: 10px;
  margin-top: 2px;
}

.site-nav {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.site-nav a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  padding: 9px 11px;
  text-decoration: none;
}

.site-nav a:hover {
  background: var(--surface-muted);
  color: var(--ink);
}

.site-nav a.button-primary {
  color: #ffffff;
}

.site-nav a.button-primary:hover {
  background: var(--accent-action);
  color: #ffffff;
  filter: brightness(0.92);
}

.button {
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  display: inline-flex;
  font-size: 13px;
  font-weight: 850;
  justify-content: center;
  min-height: 44px;
  padding: 11px 17px;
  text-decoration: none;
}

.button-primary {
  background: var(--accent-action);
  border-color: var(--accent-action);
  color: #ffffff;
  box-shadow: 0 12px 28px color-mix(in srgb, var(--accent-action) 25%, transparent);
}

.button-secondary {
  background: var(--surface);
  color: var(--ink);
}

.hero {
  align-items: center;
  display: grid;
  gap: clamp(34px, 7vw, 82px);
  grid-template-columns: minmax(0, 1.08fr) minmax(310px, 0.92fr);
  min-height: min(720px, calc(100vh - 92px));
  padding: clamp(64px, 10vw, 116px) 0 72px;
}

.eyebrow {
  color: var(--accent);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 1.35px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  color: var(--navy);
  font-size: clamp(42px, 6.6vw, 76px);
  letter-spacing: -0.055em;
  line-height: 0.98;
  margin-bottom: 24px;
  margin-top: 13px;
}

.hero-copy {
  color: var(--muted);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.65;
  max-width: 610px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.proof-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.proof {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  padding: 8px 11px;
}

.score-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 26px;
  box-shadow: 0 28px 70px color-mix(in srgb, var(--navy) 15%, transparent);
  overflow: hidden;
  padding: 22px;
  transform: rotate(1.25deg);
}

.preview-top {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.preview-label {
  color: var(--muted);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 1px;
}

.preview-apparatus {
  background: var(--accent-soft);
  border-radius: 999px;
  color: #1d4ed8;
  font-size: 10px;
  font-weight: 900;
  padding: 7px 10px;
}

@media (prefers-color-scheme: dark) {
  .preview-apparatus {
    color: #93c5fd;
  }
}

.score-value {
  color: var(--navy);
  font-size: 68px;
  font-weight: 950;
  letter-spacing: -4px;
  line-height: 1;
  margin: 26px 0 22px;
}

.score-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
}

.metric {
  background: var(--surface-muted);
  border-radius: 13px;
  padding: 12px;
}

.metric span {
  color: var(--muted);
  display: block;
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.metric strong {
  color: var(--ink);
  display: block;
  font-size: 17px;
  margin-top: 5px;
}

.element-list {
  border-top: 1px solid var(--border);
  margin-top: 18px;
  padding-top: 8px;
}

.element-row {
  align-items: center;
  border-bottom: 1px solid var(--border);
  display: grid;
  font-size: 10px;
  gap: 10px;
  grid-template-columns: 26px 1fr auto;
  min-height: 42px;
}

.element-number {
  color: var(--muted);
  font-weight: 800;
}

.element-name {
  color: var(--ink);
  font-weight: 750;
}

.element-value {
  color: var(--accent);
  font-weight: 950;
}

.feature-strip {
  border-top: 1px solid var(--border);
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, 1fr);
  padding: 36px 0 70px;
}

.feature h2 {
  color: var(--navy);
  font-size: 15px;
  margin-bottom: 7px;
}

.feature p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
  margin: 0;
}

.page-main {
  margin: 0 auto;
  max-width: 780px;
  padding: clamp(62px, 9vw, 104px) 0 80px;
}

.page-main h1 {
  font-size: clamp(38px, 7vw, 60px);
}

.page-lead {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 38px;
}

.document {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: clamp(22px, 5vw, 42px);
}

.document h2 {
  color: var(--navy);
  font-size: 20px;
  margin-bottom: 10px;
  margin-top: 34px;
}

.document h2:first-child {
  margin-top: 0;
}

.document h3 {
  color: var(--ink);
  font-size: 14px;
  margin-bottom: 7px;
  margin-top: 24px;
}

.document p,
.document li {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.document a {
  color: var(--accent);
  font-weight: 750;
}

.document li + li {
  margin-top: 8px;
}

.callout {
  background: var(--accent-soft);
  border-radius: 14px;
  color: var(--ink);
  margin: 24px 0;
  padding: 16px 18px;
}

.support-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 24px 0 34px;
}

.support-card {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 15px;
  padding: 18px;
  text-decoration: none;
}

.support-card strong {
  color: var(--navy);
  display: block;
  font-size: 14px;
}

.support-card span {
  color: var(--muted);
  display: block;
  font-size: 11px;
  line-height: 1.5;
  margin-top: 5px;
}

.site-footer {
  align-items: flex-start;
  border-top: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  font-size: 10px;
  gap: 24px;
  justify-content: space-between;
  line-height: 1.6;
  padding-top: 22px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.footer-links a {
  font-weight: 750;
  text-decoration: none;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav a:not(.button) {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 74px;
  }

  .score-preview {
    margin: 0 auto;
    max-width: 500px;
    transform: none;
    width: 100%;
  }

  .feature-strip,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: block;
  }

  .footer-links {
    justify-content: flex-start;
    margin-top: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}