.page-faq {
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: clip;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-muted);
}

.page-faq .breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}

.page-faq .faq-hero {
  position: relative;
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.1), transparent 42%), var(--color-bg);
}

.page-faq .faq-hero::after {
  content: "FAQ";
  position: absolute;
  top: 8px;
  right: 0;
  z-index: 0;
  color: rgba(167, 139, 250, 0.12);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 120px;
  line-height: 1;
  letter-spacing: -0.04em;
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  padding: 28px 24px;
  border-left: 4px solid var(--color-primary);
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.1), rgba(34, 211, 238, 0.04));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-faq .faq-hero-inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}

.page-faq .faq-hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-faq .faq-kicker {
  display: inline-block;
  margin-top: 18px;
  padding: 5px 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--color-primary);
  border: 1px solid rgba(34, 211, 238, 0.4);
  border-left: 3px solid var(--color-primary);
  background: rgba(34, 211, 238, 0.06);
  transform: skewX(-6deg);
}

.page-faq .faq-page-title {
  margin: 18px 0 12px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(36px, 5.6vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.page-faq .faq-lead {
  max-width: 720px;
  margin: 0 0 24px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.page-faq .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  transition: filter 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-faq .btn-primary {
  background: var(--gradient-brand);
  color: var(--color-bg);
}

.page-faq .btn-primary:hover {
  filter: brightness(1.1);
}

.page-faq .btn-ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.page-faq .btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-faq .btn-sm {
  padding: 8px 14px;
  font-size: 13px;
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-secondary);
  background: var(--color-surface);
}

.page-faq .faq-stat-num {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1;
}

.page-faq .faq-stat-label {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-muted);
}

.page-faq .faq-index {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
}

.page-faq .faq-index-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-faq .faq-index-card {
  position: relative;
  padding: 18px 16px 18px 20px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  background: var(--color-surface);
  text-decoration: none;
  color: var(--color-text);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-style: solid;
  border-width: 0 22px 22px 0;
  border-color: transparent rgba(34, 211, 238, 0.25) transparent transparent;
}

.page-faq .faq-index-card:hover {
  border-color: var(--color-primary);
  background: rgba(34, 211, 238, 0.06);
}

.page-faq .faq-index-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.16em;
  color: var(--color-secondary);
}

.page-faq .faq-index-title {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 20px;
}

.page-faq .faq-index-desc {
  display: block;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-muted);
}

.page-faq .faq-tabzone {
  padding: 44px 0 48px;
  border-bottom: 1px solid var(--color-border);
}

.page-faq .faq-section-head {
  position: relative;
  margin-bottom: 28px;
  padding-left: 16px;
  border-left: 4px solid var(--color-primary);
}

.page-faq .faq-section-kicker {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--color-secondary);
}

.page-faq .faq-section-title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.2;
}

.page-faq .faq-section-note {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-muted);
}

.page-faq .faq-tabs {
  position: relative;
}

.page-faq .faq-tabs > .faq-tab-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-faq .faq-tabbar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

.page-faq .faq-tabbtn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-muted);
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-tabbtn:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.page-faq .faq-tabnum {
  font-size: 12px;
  font-weight: 900;
  color: var(--color-secondary);
}

.page-faq .faq-tabs #faq-tab-basic:checked ~ .faq-tabbar label[for="faq-tab-basic"],
.page-faq .faq-tabs #faq-tab-sync:checked ~ .faq-tabbar label[for="faq-tab-sync"],
.page-faq .faq-tabs #faq-tab-version:checked ~ .faq-tabbar label[for="faq-tab-version"] {
  background: var(--gradient-brand);
  border-color: transparent;
  color: var(--color-bg);
}

.page-faq .faq-tabs #faq-tab-basic:checked ~ .faq-tabbar label[for="faq-tab-basic"] .faq-tabnum,
.page-faq .faq-tabs #faq-tab-sync:checked ~ .faq-tabbar label[for="faq-tab-sync"] .faq-tabnum,
.page-faq .faq-tabs #faq-tab-version:checked ~ .faq-tabbar label[for="faq-tab-version"] .faq-tabnum {
  color: var(--color-bg);
}

.page-faq .faq-tabs #faq-tab-basic:focus-visible ~ .faq-tabbar label[for="faq-tab-basic"],
.page-faq .faq-tabs #faq-tab-sync:focus-visible ~ .faq-tabbar label[for="faq-tab-sync"],
.page-faq .faq-tabs #faq-tab-version:focus-visible ~ .faq-tabbar label[for="faq-tab-version"] {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.page-faq .faq-tabs .faq-panel {
  display: none;
}

.page-faq .faq-tabs #faq-tab-basic:checked ~ .faq-panels .faq-panel--basic {
  display: block;
}

.page-faq .faq-tabs #faq-tab-sync:checked ~ .faq-panels .faq-panel--sync {
  display: block;
}

.page-faq .faq-tabs #faq-tab-version:checked ~ .faq-panels .faq-panel--version {
  display: block;
}

.page-faq .faq-panel-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .faq-figure {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 8px 4px;
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--color-muted);
}

.page-faq .faq-panel-title {
  margin: 4px 0 8px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 24px;
  line-height: 1.2;
}

.page-faq .faq-panel-desc {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-muted);
}

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-item {
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  background: var(--color-surface);
}

.page-faq .faq-item[open] {
  border-left-color: var(--color-accent);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 14px 14px 12px;
  list-style: none;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
  color: var(--color-text);
}

.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item summary::before {
  content: "?";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border-radius: 2px;
  background: var(--gradient-brand);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 13px;
  transform: skew(-6deg);
}

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-primary);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--color-accent);
}

.page-faq .faq-answer {
  padding: 0 16px 16px 48px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-faq .faq-answer p {
  margin: 6px 0;
}

.page-faq .faq-panel-version-note {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px;
  border: 1px solid var(--color-border);
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.18), rgba(34, 211, 238, 0.08)), var(--color-surface);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-faq .faq-version-tag {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--color-accent);
}

.page-faq .faq-version-code {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 56px;
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-faq .faq-version-desc {
  margin: 0 0 20px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-faq .faq-contact {
  padding: 48px 0;
  background: linear-gradient(180deg, rgba(167, 139, 250, 0.08), transparent 55%), var(--color-bg);
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .faq-contact-main {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--gradient-brand);
  background: var(--color-surface);
}

.page-faq .faq-contact-main .faq-section-title {
  margin-top: 8px;
}

.page-faq .faq-contact-desc {
  margin: 0 0 20px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-faq .faq-contact-meta {
  padding: 24px;
  border: 1px solid var(--color-border);
  background: rgba(21, 35, 52, 0.7);
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-body);
  font-size: 15px;
}

.page-faq .faq-contact-label {
  min-width: 52px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-secondary);
}

.page-faq .faq-contact-value {
  color: var(--color-text);
  word-break: break-all;
}

.page-faq .faq-contact-note {
  margin: 16px 0 0;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-muted);
}

@media (min-width: 600px) {
  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-index-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 56px 0 48px;
  }

  .page-faq .faq-hero-inner {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 32px;
    align-items: end;
    padding: 36px 32px;
  }

  .page-faq .faq-hero-actions {
    margin-bottom: 0;
  }

  .page-faq .faq-hero::after {
    font-size: 180px;
  }

  .page-faq .faq-panel-layout {
    grid-template-columns: 1fr 1.4fr;
    gap: 24px;
    align-items: start;
  }

  .page-faq .faq-tabzone {
    padding: 56px 0 64px;
  }

  .page-faq .faq-contact {
    padding: 56px 0;
  }
}