:root {
  color-scheme: light dark;
  --fg: #0f1115;
  --muted: #5b6270;
  --accent: #3b4b8a;
  --bg: #fafafa;
  --card: #ffffff;
  --border: #e5e7eb;
  --code-bg: #f4f4f7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e7e9ee;
    --muted: #9aa3b2;
    --accent: #8ea1ff;
    --bg: #0c0e13;
    --card: #13151b;
    --border: #242733;
    --code-bg: #1a1d25;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 2.5rem 1.25rem 4rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
}

main {
  max-width: 680px;
  margin: 0 auto;
}

header { margin-bottom: 2.5rem; }

.mark {
  font-size: 2.25rem;
  margin-bottom: 0.25rem;
  opacity: 0.9;
}

h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 2rem 0 0.75rem;
}

.tagline {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0;
}

section p { color: var(--muted); margin: 0.25rem 0 0.75rem; }

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  font-size: 13px;
  margin: 0.5rem 0;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
}

p code, li code {
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 4px;
}

.providers {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0;
  display: grid;
  gap: 0.4rem;
}

.providers li {
  padding: 0.5rem 0.75rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  color: var(--muted);
}

em { color: var(--fg); font-style: normal; font-weight: 600; }

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

footer a {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
}

footer a:hover { text-decoration: underline; }