:root {
  color-scheme: light dark;
  --bg: #f6f8fc;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: rgba(255, 255, 255, 0.92);
  --card-border: rgba(45, 77, 122, 0.12);
  --text: #19324f;
  --muted: #607b9a;
  --primary: #2d5f99;
  --primary-strong: #234b78;
  --accent: #69bff3;
  --accent-soft: rgba(105, 191, 243, 0.15);
  --button-primary-bg: #153a63;
  --button-primary-bg-strong: #0d2744;
  --button-primary-text: #f7fbff;
  --button-secondary-bg: #d9ecff;
  --button-secondary-bg-strong: #c7e3ff;
  --button-secondary-text: #12385f;
  --shadow: 0 24px 48px rgba(40, 74, 120, 0.14);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --max-width: 1100px;
  font-family: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1623;
    --surface: rgba(19, 29, 44, 0.78);
    --surface-strong: rgba(18, 27, 42, 0.92);
    --card-border: rgba(182, 210, 241, 0.14);
    --text: #ebf4ff;
    --muted: #a8bfd8;
    --primary: #93c9ff;
    --primary-strong: #c8e2ff;
    --accent: #69bff3;
    --accent-soft: rgba(105, 191, 243, 0.16);
    --button-primary-bg: #cfe6ff;
    --button-primary-bg-strong: #a8d0fb;
    --button-primary-text: #0b1b2d;
    --button-secondary-bg: #24476d;
    --button-secondary-bg-strong: #315a88;
    --button-secondary-text: #edf6ff;
    --shadow: 0 28px 60px rgba(0, 0, 0, 0.28);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(105, 191, 243, 0.28), transparent 34%),
    radial-gradient(circle at bottom right, rgba(84, 136, 205, 0.18), transparent 30%),
    var(--bg);
}

a { color: inherit; }
img { display: block; max-width: 100%; }

.container {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(246, 248, 252, 0.7);
  border-bottom: 1px solid rgba(45, 77, 122, 0.08);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background: rgba(14, 22, 35, 0.7);
    border-bottom-color: rgba(182, 210, 241, 0.08);
  }
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-inner { min-height: 72px; }
.site-title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.nav-links a,
.inline-link {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.nav-links a:hover,
.inline-link:hover { color: var(--primary); }

main { padding: 48px 0 72px; }

.hero,
.content-card,
.app-card,
.policy-section,
.support-card {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  padding: 40px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 360px);
  gap: 28px;
  align-items: center;
}

.hero.compact {
  grid-template-columns: 1fr;
}

.hero-copy h1 {
  margin: 0 0 14px;
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-copy p,
.section-copy,
.policy-copy,
.support-copy {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.hero-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button {
  background: linear-gradient(135deg, var(--button-primary-bg), var(--button-primary-bg-strong));
  color: var(--button-primary-text);
  box-shadow: 0 18px 32px rgba(13, 39, 68, 0.28);
}

.button-secondary {
  background: linear-gradient(135deg, var(--button-secondary-bg), var(--button-secondary-bg-strong));
  color: var(--button-secondary-text);
  box-shadow: 0 12px 24px rgba(27, 71, 116, 0.16);
}

.button:hover,
.button-secondary:hover {
  transform: translateY(-1px);
}

.app-icon-shell {
  margin-left: auto;
  width: min(100%, 340px);
  aspect-ratio: 1;
  padding: 22px;
  border-radius: 34px;
  background: linear-gradient(160deg, rgba(255,255,255,0.7), rgba(255,255,255,0.34));
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.55);
}

.app-icon-shell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.app-card,
.content-card,
.support-card,
.policy-section {
  padding: 28px;
}

.app-card h2,
.content-card h2,
.support-card h2,
.policy-section h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 2vw, 2rem);
  letter-spacing: -0.04em;
}

.app-card p,
.content-card p,
.support-card p,
.policy-section p,
.policy-section li {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.content-stack,
.policy-stack,
.support-stack {
  display: grid;
  gap: 18px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.badge {
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--primary-strong);
  font-size: 0.95rem;
  font-weight: 700;
}

.list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.footer {
  padding: 0 0 40px;
}

.footer-card {
  padding: 18px 22px;
  border-radius: 24px;
  border: 1px solid var(--card-border);
  background: var(--surface-strong);
}

.footer-copy {
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 860px) {
  .hero,
  .hero.compact,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 28px;
  }

  .app-icon-shell {
    margin: 0;
    width: min(100%, 280px);
  }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 20px), var(--max-width)); }
  main { padding: 28px 0 52px; }
  .hero,
  .content-card,
  .app-card,
  .support-card,
  .policy-section { padding: 22px; }
  .header-inner,
  .footer-inner { align-items: flex-start; flex-direction: column; }
  .nav-links { gap: 10px 14px; }
}