.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}
.cf-hero {
  background:
    radial-gradient(circle at 12% 0, #ccfbf1, transparent 42%),
    radial-gradient(circle at 100% 20%, #ffe4e6, transparent 40%),
    var(--cb-paper);
}
.cf-toolbar { display: grid; gap: 12px; margin-top: 16px; }
.cf-search input {
  width: 100%; box-sizing: border-box; font: 16px/1.4 Inter, "Segoe UI", sans-serif;
  border: 2px solid #0f766e; border-radius: 14px; padding: 12px 14px; background: #fff;
}
.cf-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.cf-chip {
  font-family: Inter, sans-serif; font-size: 13px; font-weight: 800;
  border: 1px solid var(--cb-line); background: #fff; color: #1c1917;
  border-radius: 999px; padding: 7px 12px; text-decoration: none; cursor: pointer;
}
.cf-chip.is-on { background: #0f766e; color: #fff; border-color: #0f766e; }
.cf-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.cf-toc {
  display: flex; flex-wrap: wrap; gap: 6px 10px; margin: 0 0 20px;
  max-height: 120px; overflow: auto; padding-bottom: 4px;
}
.cf-toc a {
  font-family: Inter, sans-serif; font-size: 12px; color: #57534e; text-decoration: none;
  background: #fff; border: 1px solid var(--cb-line); border-radius: 8px; padding: 4px 8px;
}
.cf-block { margin: 0 0 28px; }
.cf-block.is-hide { display: none; }
.cf-block-head {
  border-left: 6px solid var(--cf-color, #0f766e);
  padding: 4px 0 8px 12px; margin-bottom: 12px;
}
.cf-block-head p { margin: 0; font-family: Inter, sans-serif; font-size: 12px; font-weight: 800; color: var(--cf-color, #0f766e); letter-spacing: .04em; text-transform: uppercase; }
.cf-block-head h2 { margin: 4px 0; font-size: 1.35rem; }
.cf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.cf-card {
  background: #fff; border: 1px solid #e7e5e4; border-radius: 16px;
  padding: 14px 14px 12px; box-shadow: 0 10px 24px rgba(28,25,23,.05);
  display: flex; flex-direction: column; gap: 8px; min-height: 140px;
}
.cf-card.is-hide { display: none; }
.cf-card h3 { margin: 0; font-size: .95rem; color: #44403c; font-family: Inter, sans-serif; }
.cf-expr {
  margin: 0; font-size: 1.05rem; line-height: 1.45; font-weight: 700;
  color: #0c4a6e; word-break: break-word;
}
.cf-note { margin: 0; font-size: 13px; color: #78716c; font-family: Inter, sans-serif; }
.cf-copy {
  margin-top: auto; align-self: flex-start;
  font-family: Inter, sans-serif; font-size: 12px; font-weight: 800;
  border: 0; background: #ecfeff; color: #0f766e; border-radius: 999px;
  padding: 5px 10px; cursor: pointer;
}
.cf-copy.is-done { background: #dcfce7; color: #166534; }
@media (max-width: 640px) {
  .cf-grid { grid-template-columns: 1fr; }
  .cf-toc { max-height: 88px; }
}
@media print {
  .cf-toolbar, .cf-toc, .cf-copy, .cb-crumb, .cb-links, .cb-faq, .cb-hero-cta, footer { display: none !important; }
  .cf-card { break-inside: avoid; box-shadow: none; }
  .cb-hero { box-shadow: none; }
}