:root {
  --site-bg: #05080f;
  --site-surface: #0b1420;
  --site-surface-alt: #0a1522;
  --site-text: #c0cede;
  --site-heading: #eef7ff;
  --site-muted: #8fa8bd;
  --site-accent: #63ceff;
  --site-link: #83d6ff;
  --site-border: #203043;
  --site-card-border: #263e53;
  --site-radius: 12px;
  --site-width: 1180px;
  color-scheme: dark;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: var(--site-text);
  background: var(--site-bg);
  font-synthesis: none;
  line-height: 1.65;
}
* { box-sizing: border-box; }
html { min-height: 100%; }
body { margin: 0; min-height: 100vh; background: radial-gradient(ellipse at 80% 5%, #0c2234 0, transparent 42rem), var(--site-bg); }
a { color: var(--site-link); text-underline-offset: 4px; }
a:hover { color: #d0efff; }
:focus-visible { outline: 3px solid var(--site-link); outline-offset: 5px; }
button, input, textarea { font: inherit; }
.site-header, main, .site-footer { width: min(var(--site-width), calc(100% - 48px)); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: max(28px, env(safe-area-inset-top)) 28px; border-bottom: 1px solid var(--site-border); }
.site-brand { display: flex; align-items: center; gap: 10px; color: #f0f8ff; font-weight: 800; font-size: 22px; text-decoration: none; letter-spacing: -0.04em; }
.site-brand img { display: block; }
.site-header nav, .site-footer nav { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; font-size: 14px; }
.site-header nav a { color: #c6d8e7; text-decoration: none; }
.site-header nav .nav-play { color: var(--site-link); font-weight: 800; }
.site-header nav a[aria-current="page"] { color: var(--site-link); text-decoration: underline; }
.site-hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; padding-block: 76px 64px; }
.site-kicker { color: #66caff; font-size: 12px; font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase; margin: 0 0 16px; }
h1, h2, h3 { color: var(--site-heading); line-height: 1.14; }
h1 { font-size: clamp(40px, 4.6vw, 62px); margin: 0 0 24px; letter-spacing: -0.05em; }
h1 span { color: #73d1ff; }
.hero-intro { color: #e0eaf5; font-size: 21px; line-height: 1.5; }
.hero-copy > p:not(.site-kicker) { max-width: 540px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; margin-block: 28px 16px; }
.play-button { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; background: var(--site-accent); color: #05111a; padding: 15px 24px; border: 0; border-radius: 8px; font-size: 17px; font-weight: 800; text-decoration: none; cursor: pointer; }
.play-button:hover { color: #05111a; background: #a3e3ff; }
.hero-note { font-size: 13px; color: #8fa8bd; }
.hero-art { margin: 0; }
.hero-art img { display: block; width: 100%; height: auto; border: 1px solid #2a455e; border-radius: 16px; box-shadow: 0 30px 80px #0008; }
.hero-art figcaption { padding-top: 14px; color: #7994ab; font-size: 12px; text-align: right; }
.site-facts { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; padding: 24px 0; border-block: 1px solid var(--site-border); font-size: 14px; }
.site-facts strong { color: #f0f8ff; margin-right: 8px; font-size: 24px; }
.site-section { padding-block: 64px; border-bottom: 1px solid var(--site-border); }
h2 { font-size: clamp(28px, 3.2vw, 38px); letter-spacing: -0.035em; margin: 0 0 20px; }
h3 { font-size: 21px; margin: 0 0 14px; letter-spacing: -0.02em; }
p { margin-block: 0 16px; }
.section-intro { max-width: 760px; margin-bottom: 36px; }
.feature-grid, .scenario-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.feature-grid article { padding: 28px; border: 1px solid var(--site-card-border); background: var(--site-surface); border-radius: var(--site-radius); }
.feature-number { display: block; color: #70d1ff; font-size: 11px; letter-spacing: 0.13em; margin-bottom: 20px; }
article p:last-child { margin-bottom: 0; }
.scenario-grid article { padding: 22px 0; border-top: 1px solid var(--site-card-border); }
.scenario-grid h3 { font-size: 18px; margin-bottom: 8px; }
.scenario-country { color: #7ebbdc; font-size: 12px; }
.site-split { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: center; }
.score-summary { padding: 32px; border-left: 3px solid var(--site-accent); background: var(--site-surface-alt); }
.faq-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 48px; }
.site-ready { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 52px; }
.site-ready h2 { font-size: 28px; margin: 0; }
.site-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 28px; padding-block: 32px max(100px, env(safe-area-inset-bottom)); border-top: 1px solid var(--site-border); }
.site-footer a { text-decoration: none; }
.site-footer p { width: 100%; color: #7590a6; font-size: 12px; }
.site-footer p a { color: inherit; }
.site-footer button { font: inherit; padding: 0; color: var(--site-link); background: none; border: 0; cursor: pointer; }
.site-footer button:hover { color: #d0efff; }
.skip-link { position: absolute; inset: 8px auto auto 24px; transform: translateY(-180%); z-index: 20; padding: 12px; background: #0c2234; }
.skip-link:focus { transform: none; }
.page-intro { max-width: 850px; padding-block: 64px 40px; }
.page-intro > p:last-child { margin-bottom: 0; }
.page-lead { max-width: 65ch; color: #e0eaf5; font-size: 21px; line-height: 1.5; }
.document-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 64px; align-items: start; padding-bottom: 64px; }
.document-body { min-width: 0; max-width: 78ch; overflow-wrap: break-word; }
.document-section { padding-block: 32px; border-top: 1px solid var(--site-border); scroll-margin-top: 24px; }
.document-section h2 { margin-bottom: 20px; font-size: clamp(24px, 2.4vw, 30px); }
.document-section h3 { margin-top: 24px; }
.document-section > :last-child { margin-bottom: 0; }
.document-toc { position: sticky; top: 24px; max-height: calc(100vh - 48px); overflow-y: auto; padding: 24px; border: 1px solid var(--site-card-border); border-radius: var(--site-radius); background: var(--site-surface); }
.document-toc ul { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.document-toc a { display: block; font-size: 13px; line-height: 1.5; text-decoration: none; }
.document-toc a:hover { text-decoration: underline; }
.document-toc summary { cursor: pointer; }
.document-toc:not([open]) summary { margin-bottom: 0; }
.page-content { padding-bottom: 64px; }
.page-content li + li { margin-top: 8px; }
.page-content ul, .page-content ol { padding-left: 24px; }
.page-content .document-toc ul { padding: 0; }
.page-content .document-toc li + li { margin: 0; }
.page-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 28px; }
.site-error .page-intro { padding-bottom: 64px; }
.site-embedded [data-game-return], .rankings-embedded [data-game-return] { display: none; }
.site-embedded .site-header { padding-block: 18px; }
.site-embedded .page-intro { padding-block: 32px; }
.site-embedded .site-footer { padding-bottom: 32px; }
@media (max-width: 850px) {
  .site-hero { grid-template-columns: 1fr; gap: 32px; padding-block: 48px; }
  .hero-copy > p:not(.site-kicker) { max-width: 680px; }
  .hero-art { max-width: 660px; }
  .feature-grid, .scenario-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-grid article:last-child { grid-column: 1 / -1; }
  .site-split { grid-template-columns: 1fr; gap: 24px; }
  .document-layout { grid-template-columns: 1fr; gap: 32px; }
  .document-toc { position: static; grid-row: 1; max-height: none; }
  .document-toc ul { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 24px; }
}
@media (max-width: 540px) {
  .site-header, main, .site-footer { width: calc(100% - 2 * max(16px, env(safe-area-inset-left), env(safe-area-inset-right))); }
  .site-header { flex-wrap: wrap; gap: 14px; padding-block: max(20px, env(safe-area-inset-top)) 20px; }
  .site-header nav { width: 100%; justify-content: space-between; gap: 12px; }
  .site-hero { padding-block: 36px; }
  .hero-intro { font-size: 19px; }
  .site-facts { flex-direction: column; gap: 12px; }
  .site-section { padding-block: 40px; }
  .feature-grid, .scenario-grid, .faq-grid { grid-template-columns: 1fr; }
  .feature-grid article:last-child { grid-column: auto; }
  .scenario-grid { gap: 0; }
  .score-summary { padding: 24px; }
  .site-ready { align-items: flex-start; flex-direction: column; }
  .site-footer nav { gap: 14px 20px; }
  .page-intro { padding-block: 40px 32px; }
  .page-lead { font-size: 19px; }
  .document-layout, .page-content { padding-bottom: 40px; }
  .document-section { padding-block: 28px; }
  .document-toc { padding: 20px; }
  .document-toc ul { grid-template-columns: 1fr; gap: 10px; }
}