/* ── faq ── */

/* Sticky category nav */
.faq-nav-wrap {
  position: sticky;
  top: 64px;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}
.faq-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0;
}
.faq-nav::-webkit-scrollbar { display: none; }
.faq-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--mid);
  padding: 18px 22px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.faq-nav-link:hover,
.faq-nav-link.is-active {
  color: var(--ink);
  border-bottom-color: var(--grad-blue);
}
.faq-nav-num {
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--grad-blue);
  opacity: 0.7;
}
.faq-nav-link.is-active .faq-nav-num { opacity: 1; }

/* Category blocks */
.faq-page { background: var(--white); }
.faq-category {
  scroll-margin-top: 120px;
  padding: 96px 0;
  border-top: 1px solid var(--line);
}
.faq-category:first-child { border-top: none; }
.faq-category--alt { background: var(--off-white); }

.faq-split {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 0 clamp(48px, 6vw, 100px);
  align-items: start;
}
.faq-split-side {
  position: sticky;
  top: 148px;
  padding-top: 8px;
}
.faq-split-side .eyebrow {
  display: block;
  margin-bottom: 4px;
}
.faq-split-side .sec-ghost-num {
  margin-top: 4px;
  margin-bottom: 20px;
  color: rgba(0, 0, 0, 0.06);
}
.faq-category--alt .faq-split-side .sec-ghost-num {
  color: rgba(0, 0, 0, 0.05);
}
.faq-category-title {
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.25;
  margin: 0 0 12px;
}
.faq-category-meta {
  font-size: 12px;
  color: var(--mid);
  letter-spacing: 0.04em;
  margin: 0 0 24px;
}
.faq-category-service-link {
  font-size: 13px;
}
.faq-split-main { min-width: 0; }

/* Accordion (service.css と同等・FAQページ専用) */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.faq-item {
  border: 1px solid var(--line);
  background: var(--white);
}
.faq-category--alt .faq-item {
  background: var(--white);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 28px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-family: var(--display);
  font-size: 22px;
  color: var(--grad-blue);
  flex-shrink: 0;
  transition: transform 0.3s var(--ease), color 0.25s var(--ease);
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--accent-hover);
}
.faq-item[open] summary {
  color: var(--accent);
  background: var(--accent-bg);
}
.faq-item summary:hover { background: var(--accent-bg); }
.faq-body {
  padding: 0 28px 28px;
  font-size: 14px;
  color: var(--mid);
  line-height: 1.95;
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.faq-body p {
  margin: 20px 0 0;
}

/* Not found band */
.faq-contact-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  padding: 8px 0;
}
.faq-contact-copy .sec-title {
  margin-top: 10px;
  margin-bottom: 14px;
}
.faq-contact-copy .sec-body {
  margin: 0;
  max-width: 520px;
}
.faq-contact-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  flex-shrink: 0;
}
.faq-contact-sub {
  font-size: 13px;
  font-weight: 700;
  color: var(--grad-blue);
  letter-spacing: 0.03em;
  transition: color 0.25s var(--ease);
}
.faq-contact-sub:hover { color: var(--ink); }

@media (max-width: 1024px) {
  .faq-split {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .faq-split-side {
    position: static;
    padding-top: 0;
    border-bottom: 1px solid var(--line);
    padding-bottom: 28px;
  }
  .faq-split-side .sec-ghost-num {
    font-size: clamp(56px, 14vw, 80px);
    margin-bottom: 12px;
  }
}

@media (max-width: 768px) {
  .faq-nav-wrap { top: 56px; }
  .faq-nav-link {
    padding: 14px 16px;
    font-size: 12px;
  }
  .faq-nav-num { display: none; }
  .faq-category {
    scroll-margin-top: 108px;
    padding: 72px 0;
  }
  .faq-item summary {
    padding: 20px 20px;
    font-size: 15px;
  }
  .faq-body {
    padding: 0 20px 22px;
  }
  .faq-contact-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .faq-contact-actions {
    width: 100%;
    align-items: stretch;
  }
  .faq-contact-actions .btn-main {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .faq-item summary,
  .faq-item summary::after,
  .faq-item .faq-body {
    transition: none !important;
  }
}