:root {
  color-scheme: light;
  --ink: #20242a;
  --muted: #69717d;
  --line: #d7dde5;
  --paper: #f7f3eb;
  --panel: #fffdfa;
  --accent: #176b69;
  --accent-dark: #0f4f4d;
  --warning: #b94e22;
  --focus: #f2b84b;
  --shadow: 0 18px 48px rgba(40, 45, 52, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(90deg, rgba(23, 107, 105, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(23, 107, 105, 0.06) 1px, transparent 1px),
    var(--paper);
  background-size: 48px 48px;
}

a {
  color: inherit;
}

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

.article-shell {
  width: min(960px, 100%);
  margin: 0 auto;
  padding: 28px;
}

.article-page {
  min-height: calc(100vh - 56px);
  padding: 28px;
  background: rgba(255, 253, 250, 0.96);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.back-link {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 0 12px;
  color: var(--accent-dark);
  background: #e8f3f2;
  border: 1px solid #c5dddd;
  font-weight: 800;
  text-decoration: none;
}

.eyebrow {
  margin: 28px 0 8px;
  color: var(--accent-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.1;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(2.2rem, 6vw, 5rem);
}

.deck {
  max-width: 720px;
  margin: 16px 0 28px;
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 1.5;
}

.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.38fr);
  gap: 28px;
  align-items: start;
}

.article-body {
  display: grid;
  gap: 18px;
}

.article-section {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.article-section h2 {
  margin-bottom: 10px;
  font-size: 1.18rem;
}

.article-section p,
.article-section li {
  color: var(--muted);
  line-height: 1.55;
}

.article-section p {
  margin: 0;
}

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

.side-panel {
  position: sticky;
  top: 28px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--warning);
}

.side-panel h2 {
  margin-bottom: 12px;
  font-size: 1rem;
}

.side-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.next-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.next-list a {
  display: block;
  padding: 10px 12px;
  color: var(--accent-dark);
  background: #f2f8f7;
  border: 1px solid #d3e4e2;
  font-weight: 800;
  text-decoration: none;
}

.legal-note {
  margin: 26px 0 0;
  padding-top: 16px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.84rem;
  line-height: 1.4;
}

@media (max-width: 820px) {
  .article-shell {
    padding: 0;
  }

  .article-page {
    min-height: 100vh;
    padding: 20px;
    border-left: 0;
    border-right: 0;
    box-shadow: none;
  }

  .article-grid {
    grid-template-columns: 1fr;
  }

  .side-panel {
    position: static;
  }
}