.page-faq {
  --faq-grid-line: rgba(57, 255, 136, 0.04);
  --faq-grid-line-warm: rgba(255, 107, 53, 0.05);
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0 36px;
  border-bottom: 1px solid var(--c-divider);
  background: linear-gradient(180deg, rgba(57, 255, 136, 0.06), transparent 220px), var(--c-primary);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent) 0 55%, var(--c-warning) 55% 100%);
}

.page-faq .faq-hero h1 {
  margin: 8px 0 16px;
  font-size: 28px;
  line-height: 1.2;
  text-transform: uppercase;
  max-width: 20ch;
}

.page-faq .faq-hero-kicker {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  text-transform: uppercase;
}

.page-faq .faq-hero-desc {
  margin: 0 0 24px;
  max-width: 56ch;
  color: var(--c-sub);
}

.page-faq .faq-search-box {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 640px;
  padding: 6px 16px 6px 16px;
  background: var(--c-secondary);
  border: 1px solid var(--c-divider);
  transition: border-color var(--tr), box-shadow var(--tr);
}

.page-faq .faq-search-box:focus-within {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(57, 255, 136, 0.14);
}

.page-faq .faq-search-icon {
  position: relative;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.page-faq .faq-search-icon::before {
  content: "";
  position: absolute;
  top: 1px;
  left: 0;
  width: 12px;
  height: 12px;
  border: 2px solid var(--c-accent);
  border-radius: 50%;
}

.page-faq .faq-search-icon::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  width: 8px;
  height: 2px;
  background: var(--c-accent);
  transform: rotate(45deg);
}

.page-faq .faq-search-box input[type="search"] {
  flex: 1;
  min-width: 0;
  padding: 12px 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--c-text);
  font: inherit;
}

.page-faq .faq-search-box input[type="search"]::placeholder {
  color: var(--c-sub);
  opacity: 1;
}

.page-faq .faq-search-hint {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--c-sub);
}

.page-faq .faq-index-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-faq .faq-tag-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px;
  background: transparent;
  border: 1px solid var(--c-divider);
  color: var(--c-text);
  text-decoration: none;
  transition: border-color var(--tr), background var(--tr), color var(--tr);
}

.page-faq .faq-tag-link:hover,
.page-faq .faq-tag-link:focus-visible {
  background: var(--c-hover);
  border-color: var(--c-accent);
}

.page-faq .faq-tag-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-accent);
}

.page-faq .faq-tag-name {
  font-weight: 700;
}

.page-faq .faq-tag-count {
  padding: 2px 6px;
  background: var(--c-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-sub);
}

.page-faq .faq-section {
  padding: 56px 0 48px;
}

.page-faq .faq-section-head {
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-divider);
}

.page-faq .faq-section-head .section-index {
  margin-bottom: 8px;
}

.page-faq .faq-section-head h2 {
  margin: 0 0 12px;
  font-size: 30px;
  line-height: 1.15;
  text-transform: uppercase;
}

.page-faq .faq-section-sub {
  margin: 0;
  max-width: 60ch;
  color: var(--c-sub);
}

.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 44px;
}

.page-faq .faq-group {
  scroll-margin-top: 80px;
}

.page-faq .faq-group-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.page-faq .faq-group-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--c-divider);
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--c-accent);
}

.page-faq .faq-accordion details {
  margin-bottom: 12px;
  background: var(--c-secondary);
  border: 1px solid var(--c-divider);
  transition: border-color var(--tr), background var(--tr);
}

.page-faq .faq-accordion details:hover,
.page-faq .faq-accordion details[open] {
  border-color: var(--c-accent);
}

.page-faq .faq-accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--c-text);
  user-select: none;
  transition: background var(--tr);
}

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

.page-faq .faq-accordion summary:hover {
  background: var(--c-hover);
}

.page-faq .faq-accordion summary::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-accent);
}

.page-faq .faq-accordion details[open] summary {
  border-bottom: 1px solid var(--c-divider);
}

.page-faq .faq-accordion details[open] summary::after {
  content: "−";
}

.page-faq .faq-answer {
  padding: 4px 20px 20px;
  color: var(--c-sub);
  animation: faq-fade-in 0.3s ease;
}

.page-faq .faq-answer p {
  margin: 16px 0 0;
  max-width: 72ch;
}

.page-faq .faq-answer a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-faq .faq-guide-section {
  padding: 56px 0 64px;
  border-top: 1px solid var(--c-divider);
  border-bottom: 1px solid var(--c-divider);
  background: linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px), linear-gradient(0deg, var(--faq-grid-line) 1px, transparent 1px), var(--c-primary);
  background-size: 48px 48px;
}

.page-faq .faq-guide-grid {
  display: block;
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-step {
  position: relative;
  counter-increment: faqstep;
  padding: 24px 20px 24px 68px;
  background: var(--c-secondary);
  border: 1px solid var(--c-divider);
  border-left: 2px solid var(--c-divider);
  transition: border-color var(--tr), border-left-color var(--tr), background var(--tr);
}

.page-faq .faq-step:hover {
  background: var(--c-hover);
  border-color: var(--c-accent);
  border-left-color: var(--c-accent);
}

.page-faq .faq-step::before {
  content: "0" counter(faqstep);
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  width: 44px;
  padding-top: 24px;
  background: var(--c-primary);
  border-right: 1px solid var(--c-divider);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
}

.page-faq .faq-step h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.page-faq .faq-step p {
  margin: 0;
  max-width: 70ch;
  color: var(--c-sub);
}

.page-faq .faq-tip {
  margin-top: 12px;
  padding: 12px 16px;
  background: rgba(57, 255, 136, 0.06);
  border: 1px dashed var(--c-accent);
  font-size: 14px;
  color: var(--c-text);
}

.page-faq .faq-guide-aside {
  margin-top: 32px;
}

.page-faq .faq-img-frame {
  margin: 0;
  padding: 8px;
  background: var(--c-secondary);
  border: 1px solid var(--c-divider);
}

.page-faq .faq-img-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--c-primary);
}

.page-faq .faq-img-frame figcaption,
.page-faq .faq-contact-figure figcaption {
  margin: 0;
  padding: 10px 4px 2px;
  font-size: 13px;
  color: var(--c-sub);
}

.page-faq .faq-version-panel {
  margin-top: 24px;
  padding: 20px;
  background: var(--c-secondary);
  border: 1px solid var(--c-divider);
}

.page-faq .faq-version-label {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--c-sub);
}

.page-faq .faq-version-code {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--c-accent);
}

.page-faq .faq-version-panel p:last-child {
  margin: 0;
  color: var(--c-sub);
}

.page-faq .faq-contact-section {
  padding: 56px 0 64px;
  border-top: 1px solid var(--c-divider);
  background: linear-gradient(90deg, var(--faq-grid-line-warm) 1px, transparent 1px), linear-gradient(0deg, var(--faq-grid-line-warm) 1px, transparent 1px), var(--c-primary);
  background-size: 32px 32px;
}

.page-faq .faq-contact-grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-faq .faq-contact-card {
  display: block;
  padding: 24px;
  background: var(--c-secondary);
  border: 1px solid var(--c-divider);
  color: var(--c-text);
  text-decoration: none;
  transition: border-color var(--tr), transform var(--tr);
}

.page-faq .faq-contact-card:hover,
.page-faq .faq-contact-card:focus-visible {
  border-color: var(--c-warning);
  transform: translateY(-2px);
}

.page-faq .faq-contact-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.page-faq .faq-contact-card p {
  margin: 4px 0;
  color: var(--c-sub);
  overflow-wrap: break-word;
}

.page-faq .faq-contact-card p:first-of-type {
  color: var(--c-text);
  font-family: var(--font-mono);
  font-size: 15px;
}

.page-faq .faq-contact-icon {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
}

.page-faq .faq-contact-icon::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--c-warning);
  transition: border-color var(--tr), background var(--tr);
}

.page-faq .faq-contact-icon::after {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-warning);
  transition: color var(--tr);
}

.page-faq .faq-contact-mail::after {
  content: "MAIL";
}

.page-faq .faq-contact-phone::after {
  content: "TEL";
}

.page-faq .faq-contact-loc::after {
  content: "ADDR";
}

.page-faq .faq-contact-card:hover .faq-contact-icon::before,
.page-faq .faq-contact-card:focus-visible .faq-contact-icon::before {
  background: var(--c-accent);
  border-color: var(--c-accent);
}

.page-faq .faq-contact-card:hover .faq-contact-icon::after,
.page-faq .faq-contact-card:focus-visible .faq-contact-icon::after {
  color: var(--c-primary);
}

.page-faq .faq-contact-note {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--c-secondary);
  border-left: 2px solid var(--c-accent);
  color: var(--c-sub);
  font-size: 15px;
}

.page-faq .faq-contact-note p {
  margin: 0;
}

.page-faq .faq-contact-note p + p {
  margin-top: 8px;
}

.page-faq .faq-contact-figure {
  margin: 32px 0 0;
  padding: 12px;
  background: var(--c-secondary);
  border: 1px solid var(--c-divider);
}

.page-faq .faq-contact-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--c-primary);
}

.page-faq .faq-help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-faq .faq-help-links a {
  color: var(--c-text);
  text-decoration: none;
  border-bottom: 1px solid var(--c-divider);
  transition: color var(--tr), border-color var(--tr);
}

.page-faq .faq-help-links a:hover,
.page-faq .faq-help-links a:focus-visible {
  color: var(--c-accent);
  border-color: var(--c-accent);
}

.page-faq .faq-help-sep {
  color: var(--c-divider);
}

@keyframes faq-fade-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 48px 0 44px;
  }

  .page-faq .faq-hero h1 {
    font-size: 36px;
  }

  .page-faq .faq-hero-grid {
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-index-tags {
    flex-direction: column;
    gap: 0;
    margin-top: 0;
    padding-left: 24px;
    border-left: 1px solid var(--c-divider);
  }

  .page-faq .faq-tag-link {
    border: 0;
    border-bottom: 1px solid var(--c-divider);
    padding: 14px 4px;
  }

  .page-faq .faq-tag-link:hover,
  .page-faq .faq-tag-link:focus-visible {
    border-bottom-color: var(--c-accent);
  }

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

  .page-faq .faq-section-head h2 {
    font-size: 36px;
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-faq .faq-contact-figure {
    max-width: 640px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero h1 {
    font-size: 44px;
  }

  .page-faq .faq-guide-section {
    padding: 80px 0 88px;
  }

  .page-faq .faq-guide-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-guide-aside {
    margin-top: 0;
    position: sticky;
    top: 32px;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px 40px;
    align-items: start;
  }

  .page-faq .faq-group {
    scroll-margin-top: 24px;
  }

  .page-faq .faq-section-head {
    scroll-margin-top: 24px;
  }
}