/* Chemistry templates (/templates/): hub, category and template pages.
   Pages are generated by scripts/templates-site/build.py. */
:root {
  --tl-accent: #0d9488;
  --tl-accent-dark: #0f766e;
  --tl-ink: #0f172a;
  --tl-muted: #475569;
  --tl-line: #e2e8f0;
  --tl-bg: #f8fafc;
  --tl-pro: #6d28d9;
}
* { box-sizing: border-box; }
body.tl-body {
  margin: 0; background: var(--tl-bg); color: var(--tl-ink); line-height: 1.55;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
[hidden] { display: none !important; }
.tl-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.tp-container.tl-container { width: min(1240px, calc(100% - 32px)); }
.tp-crumbs a, .tp-related a:hover, .tp-steps li::before { color: var(--tl-accent-dark); }
.tp-steps li::before { background: var(--tl-accent); color: #fff; }
.panel { background: #fff; border: 1px solid var(--tl-line); border-radius: 14px; padding: 20px; margin-bottom: 14px; }
.panel h2 { font-size: 20px; margin: 0 0 10px; line-height: 1.3; }
.panel h2:not(:first-child) { margin-top: 18px; }
.panel p, .panel li { color: var(--tl-muted); font-size: 15px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
.tp-lead { font-size: 16px; margin: 0; }
.tp-lead a, .tl-note a { color: var(--tl-accent-dark); }
.md-faq-q { margin: 0 0 14px; }
.md-faq-q h3 { margin: 0 0 4px; font-size: 16px; font-weight: 650; }
.md-faq-q p { margin: 0; }

/* layout: content + small Pro note on the right */
.tl-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 16px; align-items: start; }
.tl-main { min-width: 0; }
.tl-pro { position: sticky; top: 12px; background: #fff; border: 1px solid var(--tl-line); border-radius: 14px; padding: 16px; font-size: 13px; color: var(--tl-muted); }
.tl-pro-k { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--tl-pro); }
.tl-pro-t { margin: 4px 0 8px; font-size: 15px; font-weight: 700; color: var(--tl-ink); line-height: 1.3; }
.tl-pro ul { margin: 0 0 12px; padding: 0; list-style: none; }
.tl-pro li { position: relative; padding-left: 16px; margin: 4px 0; font-size: 13px; line-height: 1.4; }
.tl-pro li::before { content: ''; position: absolute; left: 2px; top: 7px; width: 6px; height: 6px; border-radius: 50%; background: #c4b5fd; }
.tl-pro-link { display: block; text-align: center; padding: 8px 10px; border-radius: 9px; border: 1px solid #ddd6fe; color: var(--tl-pro); font-weight: 700; text-decoration: none; background: #faf5ff; }
.tl-pro-link:hover { border-color: var(--tl-pro); }
.tl-pro-note { margin: 10px 0 0; font-size: 12px; line-height: 1.45; }

/* tags */
.tl-tag { display: inline-block; vertical-align: middle; font-size: 10.5px; font-weight: 700; letter-spacing: .02em; padding: 1px 7px; border-radius: 999px; line-height: 1.6; white-space: nowrap; }
.tl-tag-free { background: #f0fdfa; color: #115e59; border: 1px solid #99f6e4; }
.tl-tag-pro { background: #faf5ff; color: var(--tl-pro); border: 1px solid #ddd6fe; }

/* hero */
.tl-sub { margin: 0 0 10px; font-size: 14px; font-weight: 600; color: var(--tl-accent-dark) !important; }
.tl-kicker { display: flex; align-items: center; gap: 8px; margin: 0 0 6px; font-size: 13px; font-weight: 700; }
.tl-kicker a { color: var(--tl-accent-dark); text-decoration: none; }
.tl-figure { margin: 14px 0; border: 1px solid var(--tl-line); border-radius: 12px; background: #fff; padding: 12px; text-align: center; overflow: hidden; }
.tl-figure img { max-width: 100%; height: auto; max-height: 640px; width: auto; }
.tl-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.tl-btn { display: inline-flex; align-items: center; gap: 6px; height: 38px; padding: 0 14px; border-radius: 9px; border: 1px solid #cbd5e1; background: #fff; color: #334155; font: inherit; font-size: 14px; font-weight: 600; text-decoration: none; cursor: pointer; }
.tl-btn:hover { border-color: var(--tl-accent); color: var(--tl-accent-dark); }
.tl-btn-primary { background: var(--tl-accent); border-color: var(--tl-accent); color: #fff; }
.tl-btn-primary:hover { background: var(--tl-accent-dark); color: #fff; }
.tl-btn-locked { color: #94a3b8; background: #f8fafc; cursor: default; }
.tl-btn-locked:hover { border-color: #cbd5e1; color: #94a3b8; }
.tl-note { margin: 10px 0 0; font-size: 13px !important; }

/* content */
.tl-steps, .tl-points, .tl-labels, .tl-refs { padding-left: 20px; margin: 0; }
.tl-steps li, .tl-points li, .tl-labels li, .tl-refs li { margin: 4px 0; }
.tl-steps strong { color: var(--tl-ink); }
.tl-labels { columns: 2; column-gap: 24px; }
.tl-facts { font-size: 13px !important; margin: 14px 0 0; }
.tl-refs a { color: var(--tl-accent-dark); }
.tl-ref-kind { font-size: 12px; color: #94a3b8; margin-left: 4px; }

/* cards */
.tl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.tl-card { display: flex; flex-direction: column; border: 1px solid var(--tl-line); border-radius: 12px; background: #fff; text-decoration: none; color: var(--tl-ink); overflow: hidden; transition: border-color .15s, box-shadow .15s; }
.tl-card:hover, .tl-card:focus-visible { border-color: var(--tl-accent); box-shadow: 0 6px 20px rgba(15, 23, 42, .08); outline: none; }
.tl-card:focus-visible { outline: 2px solid var(--tl-accent); outline-offset: 2px; }
.tl-thumb { display: flex; align-items: center; justify-content: center; aspect-ratio: 4 / 3; padding: 8px; background: #fff; border-bottom: 1px solid var(--tl-line); }
.tl-thumb img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; }
.tl-card-text { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; padding: 9px 11px 11px; }
.tl-card-text strong { font-size: 13.5px; line-height: 1.35; font-weight: 650; }

/* hub */
.tl-group > h2 { margin-bottom: 4px; }
.tl-cat { margin-top: 18px; }
.tl-cat h3 { font-size: 16px; margin: 0 0 10px; }
.tl-cat h3 a { color: var(--tl-ink); text-decoration: none; }
.tl-cat h3 a:hover { color: var(--tl-accent-dark); }
.tl-cat h3 span { font-size: 12px; font-weight: 600; color: #94a3b8; margin-left: 4px; }
.tl-more { display: inline-block; margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--tl-accent-dark); text-decoration: none; }
.tl-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tl-chip { display: inline-flex; align-items: center; gap: 5px; padding: 5px 10px; border: 1px solid var(--tl-line); border-radius: 999px; font-size: 12.5px; font-weight: 600; color: #334155; text-decoration: none; background: #fff; }
.tl-chip span { color: #94a3b8; font-weight: 600; }
.tl-chip:hover { border-color: var(--tl-accent); color: var(--tl-accent-dark); }
.tl-search { display: block; margin-top: 14px; }
.tl-search input { width: 100%; height: 44px; border: 1px solid #cbd5e1; border-radius: 10px; padding: 0 14px; font: inherit; font-size: 15px; color: var(--tl-ink); background: #fff; }
.tl-search input:focus { outline: 2px solid var(--tl-accent); outline-offset: 0; border-color: var(--tl-accent); }
.tl-search-none { margin: 8px 0 0; font-size: 14px; }

@media (max-width: 960px) {
  .tl-layout { grid-template-columns: minmax(0, 1fr); }
  .tl-pro { position: static; }
}
@media (max-width: 560px) {
  h1 { font-size: 24px; }
  .panel { padding: 16px; }
  .tl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .tl-labels { columns: 1; }
  .tl-btn { flex: 1 1 auto; justify-content: center; }
}