/* Shared styling for the One More Level public pages (GitHub Pages). */
:root {
  --bg: #0b0e1a;
  --bg-soft: #141a2e;
  --surface: #1b2240;
  --ink: #f2f5ff;
  --ink-dim: #8e97bd;
  --primary: #5b7bff;
  --accent: #ffd166;
  --violet: #b06bff;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 20px 80px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
}

header.site {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 28px 0 8px;
}

.mark {
  width: 48px;
  height: 48px;
  flex: none;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--primary), var(--violet));
  position: relative;
}

.mark::before,
.mark::after {
  content: '';
  position: absolute;
  border-radius: 4px;
  background: #f2f5ff;
}

.mark::before {
  inset: 30% 22% 48% 22%;
}

.mark::after {
  inset: 58% 22% 22% 22%;
  background: var(--accent);
}

.mark-name {
  font-weight: 900;
  letter-spacing: 0.02em;
  font-size: 18px;
}

.mark-name a {
  color: inherit;
  text-decoration: none;
}

h1 {
  font-size: clamp(30px, 6vw, 42px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 24px 0 6px;
}

h2 {
  font-size: 20px;
  font-weight: 800;
  margin: 34px 0 8px;
}

.updated {
  color: var(--ink-dim);
  font-size: 14px;
  margin: 0 0 8px;
}

p,
li {
  color: #dfe4ff;
}

ul {
  padding-left: 22px;
}

li {
  margin: 6px 0;
}

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

strong {
  color: var(--ink);
}

.card {
  background: var(--surface);
  border-radius: 18px;
  padding: 18px 22px;
  margin: 22px 0;
}

.card--note {
  background: var(--bg-soft);
  border: 1px solid rgba(91, 123, 255, 0.25);
}

footer.site {
  margin-top: 54px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--ink-dim);
  font-size: 14px;
}

footer.site a {
  color: var(--ink-dim);
  margin-right: 16px;
}