:root {
  color-scheme: light dark;
  --bg: #eef7ff;
  --bg2: #dff8fb;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --text: #102033;
  --muted: #58677c;
  --border: rgba(82, 123, 167, 0.24);
  --brand: #2667ff;
  --brand2: #10b7d7;
  --accent: #ffc738;
  --danger: #dc2626;
  --ok: #047857;
  --shadow: 0 22px 60px rgba(16, 32, 51, 0.14);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #07132a;
    --bg2: #082b3b;
    --surface: rgba(13, 25, 48, 0.88);
    --surface-strong: #10213d;
    --text: #f8fbff;
    --muted: #bdd0e8;
    --border: rgba(177, 211, 255, 0.18);
    --brand: #73a2ff;
    --brand2: #50d8ee;
    --accent: #ffd965;
    --shadow: 0 22px 60px rgba(0, 0, 0, 0.36);
  }
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 78% 12%, rgba(16, 183, 215, 0.28), transparent 34%),
    linear-gradient(145deg, var(--bg), var(--bg2));
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--brand); }

.shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.brand-icon {
  display: block;
  flex: 0 0 28px;
  width: 28px !important;
  height: 28px !important;
  max-width: 28px;
  max-height: 28px;
  border-radius: 50%;
  box-shadow: 0 10px 24px rgba(38, 103, 255, 0.24);
  object-fit: cover;
}

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

.links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.hero,
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero {
  padding: clamp(30px, 6vw, 72px);
  margin: 18px 0 28px;
}

.eyebrow {
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 12px 0 18px;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.04;
}

h2 { margin: 0 0 12px; font-size: 26px; line-height: 1.18; }
h3 { margin: 20px 0 8px; font-size: 18px; }
p { margin: 0 0 16px; color: var(--muted); }
ul { margin: 0 0 18px; padding-left: 22px; color: var(--muted); }
li + li { margin-top: 6px; }

.lead {
  max-width: 760px;
  font-size: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.panel { padding: 24px; }

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
}

.pill {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 12px;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-strong) 78%, transparent);
  font-size: 13px;
  font-weight: 800;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  padding: 10px 16px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  border: 0;
  cursor: pointer;
}

.button.secondary {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--border);
}

.store-button {
  gap: 8px;
}

.button-note {
  font-size: 11px;
  font-weight: 700;
  opacity: 0.82;
}

.button.is-unavailable,
.button[aria-disabled="true"] {
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-strong) 82%, transparent);
  color: var(--muted);
  cursor: default;
  box-shadow: none;
}

.notice {
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 18px 0;
  background: color-mix(in srgb, var(--brand) 8%, var(--surface));
}

.danger-box {
  border-left-color: var(--danger);
  background: color-mix(in srgb, var(--danger) 8%, var(--surface));
}

.ok-box {
  border-left-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 8%, var(--surface));
}

code {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  background: color-mix(in srgb, var(--surface-strong) 78%, transparent);
}

footer {
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .nav { align-items: flex-start; flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
  .hero,
  .panel { border-radius: 14px; }
}