/* ==========================================================================
   assets/css/subpage.css
   Shared building blocks for inner pages built in the homepage design
   (Contact Us, AI category pages). Loaded after home.css.
     - .icf-chcard   white card with tinted icon tile, title, note, text, link
     - .icf-faq      accordion (behaviour: assets/js/subpage.js)
   ========================================================================== */

.icf-channels { padding: 24px 0 64px; }
.icf-channels .ic-section-head { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.icf-channels__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.icf-chcard {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 28px 26px;
  border-radius: var(--ic-r-xl);
  background: #fff;
  border: 1px solid var(--ic-line);
  box-shadow: var(--ic-sh-sm);
  transition: transform 0.25s var(--ic-ease), box-shadow 0.25s var(--ic-ease), border-color 0.25s var(--ic-ease);
}
.icf-chcard:hover { transform: translateY(-4px); box-shadow: var(--ic-sh-md); border-color: var(--ic-blue-200); }
.icf-chcard h3 { margin-top: 6px; font: 800 20px/1.2 var(--ic-font-display); letter-spacing: -0.02em; color: var(--ic-ink); }
.icf-chcard__note { font: 700 12px/1.2 var(--ic-font-body); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ic-blue-600); }
.icf-chcard p { font-size: 15px; line-height: 1.6; color: var(--ic-muted); }
.icf-chcard__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 8px;
  font: 700 15px/1.2 var(--ic-font-body);
  color: var(--ic-blue-600);
  text-decoration: none;
  overflow-wrap: anywhere;
}
.icf-chcard__link .ai-icon { width: 16px; height: 16px; transition: transform 0.2s var(--ic-ease); }
.icf-chcard__link:hover { color: var(--ic-blue-700); }
.icf-chcard__link:hover .ai-icon { transform: translateX(4px); }

.icf-faq { padding: 64px 0 72px; }
.icf-faq__wrap { max-width: 860px; }
.icf-faq .ic-section-head { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.icf-faq__list { display: grid; gap: 14px; }
.icf-faq__item {
  border-radius: var(--ic-r-lg);
  background: #fff;
  border: 1px solid var(--ic-line);
  box-shadow: var(--ic-sh-sm);
  transition: border-color 0.2s var(--ic-ease), box-shadow 0.2s var(--ic-ease);
}
.icf-faq__item.is-open { border-color: var(--ic-blue-200); box-shadow: var(--ic-sh-md); }
.icf-faq__item h3 { margin: 0; }
.icf-faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 22px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  font: 700 16.5px/1.4 var(--ic-font-display);
  letter-spacing: -0.01em;
  color: var(--ic-ink);
}
.icf-faq__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  color: var(--ic-blue-600);
  background: var(--ic-blue-50);
  transition: transform 0.25s var(--ic-ease), background 0.2s;
}
.icf-faq__icon .ai-icon { width: 18px; height: 18px; }
.icf-faq__item.is-open .icf-faq__icon { transform: rotate(180deg); background: var(--ic-blue-100); }
.icf-faq__a { padding: 0 22px 22px; }
.icf-faq__a[hidden] { display: none; }
.icf-faq__a p { font-size: 15.5px; line-height: 1.7; color: var(--ic-text); }

@media (max-width: 900px) {
  .icf-channels__grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .icf-faq__q { font-size: 15.5px; padding: 18px; }
  .icf-faq__a { padding: 0 18px 18px; }
}