.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.8;
  overflow-x: hidden;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--space-unit) * 5) calc(var(--space-unit) * 2) calc(var(--space-unit) * 4);
  border-top: 3px solid var(--accent-green);
  border-bottom: 1px solid var(--border-muted);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--bg-secondary);
}

.page-faq .faq-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: calc(var(--space-unit) * 4);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
}

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

.page-faq .faq-breadcrumb a:hover,
.page-faq .faq-breadcrumb a:focus-visible {
  color: var(--accent-green);
}

.page-faq .faq-breadcrumb-sep {
  color: var(--border-muted);
}

.page-faq .faq-breadcrumb-current {
  color: var(--text-primary);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--space-unit) * 4);
}

.page-faq .faq-hero-main h1 {
  margin: calc(var(--space-unit) * 1) 0 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero-desc {
  max-width: 680px;
  margin: calc(var(--space-unit) * 2) 0 0;
  color: var(--text-secondary);
  font-size: 16px;
}

.page-faq .faq-hero-aside {
  border-top: 1px solid var(--border-muted);
  padding-top: calc(var(--space-unit) * 2);
}

.page-faq .faq-hero-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: calc(var(--space-unit) * 2);
  margin-top: calc(var(--space-unit) * 2);
}

.page-faq .faq-hero-fact {
  padding: calc(var(--space-unit) * 2);
  border: 1px solid var(--border-muted);
  background: var(--bg-panel);
}

.page-faq .faq-hero-fact strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--accent-green);
}

.page-faq .faq-hero-fact span {
  font-size: 12px;
  color: var(--text-secondary);
}

.page-faq .faq-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: calc(var(--space-unit) * 4);
}

.page-faq .faq-tag-row span {
  padding: 4px 12px;
  border: 1px solid var(--border-muted);
  border-radius: 999px;
  background: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}

/* ---------- Layout ---------- */
.page-faq .faq-layout {
  padding-top: calc(var(--space-unit) * 4);
  padding-bottom: calc(var(--space-unit) * 8);
}

.page-faq .faq-sidebar {
  margin-bottom: calc(var(--space-unit) * 4);
  padding: calc(var(--space-unit) * 3);
  border: 1px solid var(--border-muted);
  background: var(--bg-secondary);
}

.page-faq .faq-question-list {
  list-style: none;
  margin: calc(var(--space-unit) * 2) 0 0;
  padding: 0;
}

.page-faq .faq-question-list li + li {
  border-top: 1px solid var(--border-muted);
}

.page-faq .faq-question-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 15px;
  transition: color var(--transition-fast);
}

.page-faq .faq-question-list a span {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-green);
}

.page-faq .faq-question-list a:hover,
.page-faq .faq-question-list a:focus-visible {
  color: var(--accent-blue);
}

.page-faq .faq-sidebar-note {
  margin-top: calc(var(--space-unit) * 3);
  padding: calc(var(--space-unit) * 2);
  border: 1px dashed var(--border-muted);
  background: var(--bg-primary);
}

.page-faq .faq-sidebar-note-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent-gold);
}

.page-faq .faq-sidebar-note p {
  margin: 8px 0 0;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ---------- Section shell ---------- */
.page-faq .faq-sec {
  margin-bottom: calc(var(--space-unit) * 8);
  padding-top: calc(var(--space-unit) * 4);
  border-top: 1px solid var(--border-muted);
}

.page-faq .faq-sec-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: calc(var(--space-unit) * 3);
}

.page-faq .faq-sec-index {
  flex-shrink: 0;
  padding: 4px 10px;
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: 4px;
  background: rgba(0, 255, 136, 0.08);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--accent-green);
}

.page-faq .faq-sec-head h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.35;
}

.page-faq .faq-guide-intro {
  max-width: 640px;
  margin: 0 0 calc(var(--space-unit) * 3);
  color: var(--text-secondary);
  font-size: 15px;
}

/* ---------- Accordion ---------- */
.page-faq .faq-accordion {
  display: block;
  border: 1px solid var(--border-muted);
  background: var(--bg-secondary);
}

.page-faq .faq-details {
  border-bottom: 1px solid var(--border-muted);
}

.page-faq .faq-details:last-child {
  border-bottom: none;
}

.page-faq .faq-details summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  cursor: pointer;
  list-style: none;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 15px;
  transition: background var(--transition-fast);
}

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

.page-faq .faq-details summary:hover {
  background: var(--bg-panel);
}

.page-faq .faq-details summary::after {
  content: "+";
  margin-left: auto;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--accent-green);
}

.page-faq .faq-details[open] summary {
  background: var(--bg-panel);
}

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

.page-faq .faq-q-num {
  flex-shrink: 0;
  padding: 2px 6px;
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  color: var(--accent-green);
  white-space: nowrap;
}

.page-faq .faq-a-body {
  padding: 0 16px 16px;
  color: var(--text-secondary);
  font-size: 15px;
}

.page-faq .faq-a-body p {
  margin: 0;
}

/* ---------- Steps ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 0 0 calc(var(--space-unit) * 3);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 42px;
  bottom: 0;
  width: 2px;
  background: var(--border-muted);
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step-num {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent-green);
  border-radius: 50%;
  background: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-green);
}

.page-faq .faq-step-body {
  flex: 1;
  min-width: 0;
  padding: calc(var(--space-unit) * 2);
  border: 1px solid var(--border-muted);
  background: var(--bg-secondary);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.page-faq .faq-step-body:hover,
.page-faq .faq-step-body:focus-within {
  border-color: var(--accent-blue);
  background: var(--bg-panel);
}

.page-faq .faq-step-body h3 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
}

.page-faq .faq-step-body p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.page-faq .faq-path {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 8px;
  border-radius: 3px;
  background: rgba(0, 194, 255, 0.1);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-blue);
}

.page-faq .faq-tip {
  margin-top: calc(var(--space-unit) * 2);
  padding: calc(var(--space-unit) * 2);
  border-left: 3px solid var(--accent-gold);
  background: rgba(255, 215, 0, 0.06);
}

.page-faq .faq-tip .highlight-gold,
.page-faq .faq-tip .highlight-green {
  font-weight: 700;
}

.page-faq .faq-tip p {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ---------- Figure ---------- */
.page-faq .faq-figure {
  margin: calc(var(--space-unit) * 4) 0 0;
  padding: calc(var(--space-unit) * 2);
  border: 1px solid var(--border-muted);
  background: var(--bg-secondary);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px dashed var(--border-muted);
}

.page-faq .faq-figure figcaption {
  margin-top: 12px;
}

/* ---------- Support ---------- */
.page-faq .faq-support-desc {
  max-width: 680px;
  margin: 0 0 calc(var(--space-unit) * 3);
  color: var(--text-secondary);
  font-size: 15px;
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--space-unit) * 2);
}

.page-faq .faq-contact-card {
  position: relative;
  overflow: hidden;
  padding: calc(var(--space-unit) * 3);
  border: 1px solid var(--border-muted);
  background: var(--bg-secondary);
}

.page-faq .faq-contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-green);
}

.page-faq .faq-contact-card:nth-child(2)::before {
  background: var(--accent-blue);
}

.page-faq .faq-contact-card:nth-child(3)::before {
  background: var(--accent-gold);
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.page-faq .faq-contact-value {
  display: block;
  margin: 8px 0 4px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.page-faq .faq-support-more {
  margin-top: calc(var(--space-unit) * 4);
  padding-top: calc(var(--space-unit) * 2);
  border-top: 1px solid var(--border-muted);
  color: var(--text-secondary);
}

.page-faq .faq-support-more a {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 194, 255, 0.4);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.page-faq .faq-support-more a:hover,
.page-faq .faq-support-more a:focus-visible {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
}

/* ---------- Responsive ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--space-unit) * 7);
    padding-bottom: calc(var(--space-unit) * 5);
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: 1fr 240px;
    align-items: start;
  }

  .page-faq .faq-hero-aside {
    border-top: none;
    border-left: 2px solid var(--accent-green);
    padding-top: 0;
    padding-left: calc(var(--space-unit) * 2);
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: calc(var(--space-unit) * 6);
    padding-top: calc(var(--space-unit) * 6);
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-offset) + 24px);
    align-self: start;
    margin-bottom: 0;
  }

  .page-faq .faq-compat-layout,
  .page-faq .faq-member-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: calc(var(--space-unit) * 4);
    align-items: start;
  }

  .page-faq .faq-member-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
  }

  .page-faq .faq-member-layout .faq-figure {
    order: -1;
  }

  .page-faq .faq-figure {
    margin-top: 0;
  }

  .page-faq .faq-tip {
    margin-left: 54px;
  }

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