:root {
  --background: #111113;
  --deep: #0b0b0c;
  --surface: #1a1a1d;
  --raised: #26262a;
  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #8e8e93;
  --accent: #ffb340;
  --gradient: linear-gradient(135deg, #ffc35c, #ff8a3d);
  --radius: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--deep);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* Header */
header.site {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(12, 12, 14, 0.85);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
header.site nav { display: flex; gap: 22px; }
header.site nav a { color: var(--text-secondary); font-size: 15px; }
header.site nav a:hover, header.site nav a[aria-current] { color: var(--text); text-decoration: none; }

.logo { display: inline-flex; align-items: center; gap: 9px; color: var(--text); font-weight: 800; font-size: 21px; letter-spacing: -0.6px; }
.logo:hover { text-decoration: none; }
.mark {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--gradient);
}
.mark svg { width: 12px; height: 12px; margin-left: 2px; fill: var(--deep); }

/* Home */
.hero { padding: 104px 0 72px; text-align: center; }
.hero .mark { width: 76px; height: 76px; border-radius: 20px; margin-bottom: 28px; box-shadow: 0 18px 50px rgba(255, 138, 61, 0.25); }
.hero .mark svg { width: 30px; height: 30px; margin-left: 5px; }
.hero h1 { font-size: clamp(38px, 7vw, 64px); line-height: 1.05; letter-spacing: -1.8px; margin: 0 0 18px; font-weight: 800; }
.hero p { font-size: clamp(18px, 2.4vw, 21px); color: var(--text-secondary); max-width: 640px; margin: 0 auto; }
.platforms { margin-top: 28px; color: var(--text-tertiary); font-size: 15px; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; padding-bottom: 88px; }
.feature { background: var(--surface); border: 1px solid rgba(255, 255, 255, 0.05); border-radius: var(--radius); padding: 26px; }
.feature h2 { font-size: 19px; margin: 0 0 8px; letter-spacing: -0.3px; }
.feature p { margin: 0; color: var(--text-secondary); font-size: 16px; }

.notice { background: var(--surface); border-radius: var(--radius); padding: 22px 26px; color: var(--text-secondary); font-size: 15px; margin-bottom: 88px; }
.notice strong { color: var(--text); }

/* Text pages */
.page { max-width: 720px; padding: 72px 24px 96px; }
.page h1 { font-size: clamp(32px, 5vw, 44px); letter-spacing: -1.2px; line-height: 1.1; margin: 0 0 8px; }
.page .updated { color: var(--text-tertiary); font-size: 15px; margin: 0 0 40px; }
.page h2 { font-size: 22px; letter-spacing: -0.4px; margin: 44px 0 10px; }
.page h3 { font-size: 18px; margin: 28px 0 6px; }
.page p, .page li { color: #d1d1d6; }
.page ul { padding-left: 22px; }
.page li { margin: 6px 0; }

.contact { background: var(--surface); border-radius: var(--radius); padding: 24px 26px; margin: 28px 0 8px; }
.contact p { margin: 0; }
.contact a { font-size: 19px; font-weight: 600; }

details { background: var(--surface); border-radius: 12px; padding: 16px 20px; margin: 10px 0; }
details summary { cursor: pointer; font-weight: 600; color: var(--text); }
details p { margin: 10px 0 2px; }

/* Footer */
footer.site { border-top: 1px solid rgba(255, 255, 255, 0.06); padding: 28px 0 40px; color: var(--text-tertiary); font-size: 14px; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
footer.site nav { display: flex; gap: 20px; }
footer.site a { color: var(--text-tertiary); }
footer.site a:hover { color: var(--text); }

@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  header.site nav { gap: 16px; }
  .hero { padding: 72px 0 56px; }
  .page { padding: 48px 16px 72px; }
}

footer.site .disclaimer { display: block; margin-top: 18px; font-size: 13px; line-height: 1.55; color: var(--text-tertiary); }