:root {
  color-scheme: light dark;
  --background: #f6f8fb;
  --surface: #ffffff;
  --text: #15171a;
  --muted: #5f6670;
  --accent: #087ff5;
  --success: #168a55;
  --border: rgba(24, 35, 48, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  line-height: 1.55;
}

header, main, footer {
  width: min(760px, calc(100% - 40px));
  margin-inline: auto;
}

header { padding: 72px 0 30px; }
main { padding-bottom: 56px; }
footer { padding: 24px 0 48px; color: var(--muted); font-size: 0.9rem; }

h1 { margin: 0 0 10px; font-size: clamp(2.25rem, 8vw, 4rem); line-height: 1.05; }
h2 { margin-top: 36px; font-size: 1.35rem; }
p, li { color: var(--muted); }
a { color: var(--accent); font-weight: 600; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-weight: 750;
  margin-bottom: 20px;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent);
  color: white;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin: 24px 0;
}

.links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 20px; }
.eyebrow { color: var(--success); font-weight: 700; }

@media (prefers-color-scheme: dark) {
  :root {
    --background: #090b0e;
    --surface: #15191e;
    --text: #f6f8fa;
    --muted: #a7afb9;
    --border: rgba(255, 255, 255, 0.12);
  }
}