:root {
  color-scheme: dark;
  --bg: #0c0c0d;
  --surface: #1a1a1c;
  --surface-border: rgba(255, 255, 255, 0.08);
  --text-primary: rgba(255, 255, 255, 0.92);
  --text-secondary: rgba(255, 255, 255, 0.66);
  --text-tertiary: rgba(255, 255, 255, 0.48);
  --accent: #49d2af;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --content-width: 760px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  line-height: 1.55;
}

body {
  padding: 40px 20px 80px;
}

a {
  color: inherit;
}

.page-shell {
  width: min(100%, var(--content-width));
  margin: 0 auto;
}

.page-shell--document {
  width: min(100%, 820px);
}

.hero,
.document,
.note {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow);
}

.hero,
.note,
.document {
  border-radius: var(--radius-xl);
}

.hero {
  padding: 28px;
  margin-bottom: 20px;
}

.hero h1,
.document h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.lede,
.document-meta,
.note p,
.document p,
.document li {
  color: var(--text-secondary);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.card-list {
  display: grid;
  gap: 14px;
}

.card-link {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  text-decoration: none;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.card-link:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.16);
}

.card-link h2 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.card-link p {
  margin: 0;
  color: var(--text-secondary);
}

.card-meta {
  white-space: nowrap;
  color: var(--accent);
  font-weight: 600;
}

.note {
  margin-top: 20px;
  padding: 20px 24px;
}

.note p {
  margin: 0;
}

.note p + p {
  margin-top: 8px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--text-secondary);
  text-decoration: none;
}

.back-link:hover {
  color: var(--text-primary);
}

.document {
  padding: 32px 28px;
}

.document-header {
  margin-bottom: 28px;
}

.document section + section {
  margin-top: 28px;
}

.document h2 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--text-primary);
}

.document h3 {
  margin: 18px 0 10px;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.document p {
  margin: 0;
}

.document p + p,
.document ul + p,
.document p + ul {
  margin-top: 12px;
}

.document ul {
  margin: 0;
  padding-left: 20px;
}

.document a {
  color: var(--accent);
  text-decoration: none;
}

.document a:hover {
  text-decoration: underline;
}

.placeholder {
  color: var(--text-tertiary);
}

@media (max-width: 640px) {
  body {
    padding: 24px 14px 56px;
  }

  .hero,
  .document,
  .note {
    border-radius: 22px;
  }

  .hero,
  .document {
    padding: 22px 18px;
  }

  .card-link {
    padding: 18px;
  }
}