:root {
  color-scheme: light dark;
  --background: #f4f6fa;
  --surface: #ffffff;
  --text: #14213d;
  --muted: #5f6b7a;
  --accent: #0866d9;
  --border: #dce3ed;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0d1420;
    --surface: #151f2e;
    --text: #f2f6fc;
    --muted: #b4bfcc;
    --accent: #65a8ff;
    --border: #2c3a4e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 18px;
  line-height: 1.65;
}

a { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

.page {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 48px;
}

.hero { padding: 24px 0 32px; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 700; }
h1 { margin: 8px 0 12px; font-size: clamp(2.2rem, 7vw, 4rem); line-height: 1.08; }
h2 { margin-top: 2.2rem; line-height: 1.25; }
.lead { margin: 0; color: var(--muted); font-size: 1.2rem; }
.meta { color: var(--muted); }

.notice {
  margin: 24px 0;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: 14px;
}

.platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0;
}

.platforms span {
  padding: 8px 14px;
  color: var(--accent);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-weight: 700;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 32px 0 56px;
}

.card {
  display: flex;
  min-height: 150px;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  text-decoration: none;
}

.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card span { color: var(--accent); font-size: 1.25rem; font-weight: 750; }
.card small { color: var(--muted); font-size: .95rem; }

.document {
  background: var(--surface);
  margin-top: 32px;
  margin-bottom: 32px;
  padding: 48px;
  border: 1px solid var(--border);
  border-radius: 22px;
}

.back { display: inline-block; margin-bottom: 20px; }
dt { margin-top: 1.2rem; font-weight: 750; }
dd { margin-left: 0; color: var(--muted); }
footer { color: var(--muted); border-top: 1px solid var(--border); padding-top: 24px; }

@media (max-width: 600px) {
  body { font-size: 17px; }
  .page { padding-top: 28px; }
  .document { width: 100%; margin: 0; padding: 28px 20px; border: 0; border-radius: 0; }
}