/* Chain research public pages (blog + markdown + Instagram embeds) */
.chain-guide-page main {
  position: relative;
  z-index: 1;
}

.chain-guide-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(165deg, #f0fdfa 0%, #f8fffe 45%, #ffffff 100%);
}

.chain-guide-header {
  padding: clamp(2rem, 5vw, 3rem) 1.25rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.72);
}

.chain-guide-header h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.chain-guide-kicker {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 0.35rem;
}

.chain-guide-verdict-line {
  margin: 0.35rem 0 0;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.chain-guide-verdict-line strong {
  color: var(--color-text);
}

.chain-guide-wrap {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.chain-guide-loading,
.chain-guide-error {
  text-align: center;
  padding: 2rem 1rem;
}

.chain-guide-error {
  color: #b91c1c;
  font-weight: 600;
}

.chain-guide-article {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.05);
}

.chain-guide-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.75rem;
}

.chain-guide-tab {
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.chain-guide-tab:hover {
  border-color: rgba(13, 148, 136, 0.4);
  color: var(--color-text);
}

.chain-guide-tab[aria-selected='true'] {
  background: var(--color-primary-light);
  border-color: rgba(13, 148, 136, 0.45);
  color: var(--color-text);
}

.chain-guide-panel[hidden] {
  display: none !important;
}

.chain-guide-md {
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.chain-guide-md h1,
.chain-guide-md h2,
.chain-guide-md h3 {
  color: var(--color-text);
  margin: 1.25rem 0 0.5rem;
}

.chain-guide-md h1 {
  font-size: 1.35rem;
}

.chain-guide-md h2 {
  font-size: 1.2rem;
}

.chain-guide-md p {
  margin: 0 0 0.9rem;
}

.chain-guide-md ul,
.chain-guide-md ol {
  margin: 0 0 0.9rem 1.2rem;
}

.chain-guide-foods {
  margin: 0 0 1rem;
  padding: 1rem 1.15rem;
  background: var(--color-primary-light);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.chain-guide-foods h2 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.chain-guide-foods ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.92rem;
  color: var(--color-text-secondary);
}

.chain-guide-instagram {
  margin-top: 0.5rem;
}

.chain-guide-instagram-lead {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin: 0 0 1rem;
}

.chain-guide-ig-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
}

.chain-guide-ig-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 0.75rem;
}

.chain-guide-ig-title {
  font-size: 0.88rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
  color: var(--color-text);
}

.chain-guide-ig-snippet {
  font-size: 0.82rem;
  line-height: 1.45;
  margin: 0 0 0.5rem;
  color: var(--color-text-muted);
}

.chain-guide-ig-direct {
  font-size: 0.8rem;
  margin: 0.5rem 0 0;
}

.chain-guide-footnote {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.chain-guide-back {
  display: inline-block;
  margin-bottom: 1.25rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.chain-guide-back:hover {
  text-decoration: underline;
}