/* 帮助中心：页面专属样式 */
.page-faq {
  background:
    linear-gradient(rgba(10, 20, 40, 0.85), rgba(10, 20, 40, 0.85)),
    repeating-linear-gradient(0deg, transparent 0, transparent 3px, rgba(0, 255, 135, 0.03) 3px, rgba(0, 255, 135, 0.03) 4px);
  color: var(--text-primary);
  overflow-x: hidden;
  min-height: 100vh;
}

.page-faq .breadcrumb {
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .breadcrumb li {
  color: var(--text-secondary);
}

.page-faq .breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--space-blue-500);
}

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

.page-faq .breadcrumb a:hover {
  color: var(--neon-green-400);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--neon-green-400);
}

.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 36px;
}

.page-faq .faq-hero::after {
  content: "";
  display: block;
  height: 1px;
  margin-top: 32px;
  background: linear-gradient(90deg, var(--neon-green-400) 0%, var(--space-blue-500) 45%, transparent 85%);
}

.page-faq .faq-hero-kicker {
  display: inline-block;
  padding: 6px 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--neon-green-400);
  border: 1px solid var(--space-blue-500);
  background: var(--ink-900);
}

.page-faq .faq-hero h1 {
  max-width: 860px;
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 1.9rem;
  line-height: 1.18;
}

.page-faq .faq-hero-lead {
  max-width: 640px;
  margin: 0 0 22px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-faq .faq-search {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  max-width: 640px;
  padding: 12px 14px;
  border: 1px solid var(--space-blue-500);
  border-left: 3px solid var(--neon-green-400);
  background: var(--space-blue-700);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.page-faq .faq-search-icon {
  display: flex;
  flex: 0 0 auto;
  color: var(--neon-green-400);
}

.page-faq .faq-layout {
  display: block;
  padding-top: 0;
}

.page-faq .faq-toc {
  margin: 32px 0 28px;
  border: 1px solid var(--space-blue-500);
  background: rgba(15, 32, 64, 0.65);
}

.page-faq .faq-toc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--space-blue-500);
}

.page-faq .faq-toc-label {
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
}

.page-faq .faq-toc-en {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  color: var(--neon-green-400);
}

.page-faq .faq-toc-list {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--space-blue-500);
  scrollbar-width: thin;
}

.page-faq .faq-toc-link {
  flex: 0 0 auto;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  white-space: nowrap;
  color: var(--text-secondary);
  text-decoration: none;
  border-right: 1px solid var(--space-blue-500);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.page-faq .faq-toc-link:last-child {
  border-right: 0;
}

.page-faq .faq-toc-link:hover,
.page-faq .faq-toc-link:focus,
.page-faq .faq-toc-link[aria-selected="true"] {
  background: var(--space-blue-700);
  color: var(--neon-green-400);
  box-shadow: inset 0 -2px 0 var(--neon-green-400);
}

.page-faq .faq-toc-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.page-faq .faq-toc-foot .btn {
  padding: 8px 14px;
  font-size: 0.8125rem;
}

.page-faq .faq-content {
  display: grid;
  gap: 56px;
  padding-bottom: 64px;
}

.page-faq .faq-section {
  scroll-margin-top: 24px;
  padding-top: 28px;
  border-top: 4px solid var(--neon-green-400);
}

.page-faq .faq-section-head .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  color: var(--neon-green-400);
  text-transform: uppercase;
}

.page-faq .faq-section-head h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: 1.75rem;
  line-height: 1.2;
}

.page-faq .faq-section-head p {
  margin: 0 0 20px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-faq .faq-image-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 8px;
}

.page-faq .faq-image {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--space-blue-500);
  background: var(--ink-900);
}

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

.page-faq .faq-steps {
  display: grid;
  gap: 18px;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--space-blue-500);
  border-left: 2px solid var(--neon-green-400);
  background: var(--space-blue-700);
}

.page-faq .faq-step-num {
  padding: 4px 6px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1;
  color: var(--gold-500);
  background: var(--ink-900);
}

.page-faq .faq-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1rem;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.page-faq .faq-accordion {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.page-faq .faq-item {
  border: 1px solid var(--space-blue-500);
  background: var(--space-blue-700);
  transition: border-color 0.2s, border-left-color 0.2s;
}

.page-faq .faq-item[open] {
  border-left: 3px solid var(--neon-green-400);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 16px 44px 16px 16px;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary::after {
  position: absolute;
  top: 12px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--neon-green-400);
  content: "+";
  transition: transform 0.2s;
}

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

.page-faq .faq-answer {
  margin-left: 16px;
  padding: 0 16px 16px 0;
  border-top: 1px solid var(--space-blue-500);
}

.page-faq .faq-answer p {
  margin: 12px 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-faq .faq-feature-note {
  display: grid;
  gap: 12px;
  padding: 18px 20px;
  border: 1px solid var(--space-blue-500);
  background: var(--space-blue-700);
}

.page-faq .faq-feature-note-tag {
  justify-self: start;
  padding: 4px 6px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  color: var(--neon-green-400);
  border: 1px solid var(--neon-green-400);
}

.page-faq .faq-feature-note p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-faq .faq-feature-note-link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--neon-green-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-feature-note-link:hover {
  border-bottom-color: var(--neon-green-400);
}

.page-faq .faq-data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.page-faq .faq-data-card {
  display: grid;
  gap: 4px;
  padding: 16px;
  border: 1px solid var(--space-blue-500);
  background: var(--space-blue-700);
}

.page-faq .faq-data-num {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  line-height: 1;
  color: var(--neon-green-400);
}

.page-faq .faq-data-card:first-child .faq-data-num {
  color: var(--gold-500);
}

.page-faq .faq-data-label {
  font-family: var(--font-display);
  font-size: 0.8125rem;
}

.page-faq .faq-data-card p {
  margin: 4px 0 0;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.page-faq .faq-data-notes {
  padding: 20px;
  border: 1px solid var(--space-blue-500);
  background: var(--ink-900);
}

.page-faq .faq-data-notes h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
}

.page-faq .faq-data-notes ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-data-notes li {
  position: relative;
  padding-left: 18px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.page-faq .faq-data-notes li::before {
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--neon-green-400);
  content: ">";
}

.page-faq .faq-data-notes li strong {
  font-weight: 600;
  color: var(--text-primary);
}

.page-faq .faq-data-more {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--space-blue-500);
}

.page-faq .faq-data-more a {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--neon-green-400);
  text-decoration: none;
}

.page-faq .faq-contact-grid {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.page-faq .faq-contact-card {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--space-blue-500);
  background: var(--space-blue-700);
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--neon-green-400);
  text-transform: uppercase;
}

.page-faq .faq-contact-value {
  font-size: 1rem;
  word-break: break-all;
}

.page-faq .faq-support-note {
  display: grid;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--space-blue-500);
  background: var(--space-blue-700);
}

.page-faq .faq-support-note p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-faq .faq-support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-support-actions .btn {
  justify-self: start;
  padding: 9px 16px;
  font-size: 0.875rem;
}

.page-faq .faq-support-btn {
  border: 1px solid var(--neon-green-400);
  background: transparent;
  color: var(--neon-green-400);
}

.page-faq .faq-support-btn:hover {
  background: rgba(0, 255, 135, 0.08);
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 64px 0 52px;
  }

  .page-faq .faq-hero h1 {
    font-size: 3rem;
  }

  .page-faq .faq-toc-list {
    display: grid;
    grid-template-columns: 1fr;
    overflow: visible;
  }

  .page-faq .faq-toc-link {
    padding: 12px 16px;
    text-align: left;
    border-right: 0;
    border-bottom: 1px solid var(--space-blue-500);
  }

  .page-faq .faq-toc-link:last-child {
    border-bottom: 0;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-image-row {
    grid-template-columns: 5fr 7fr;
  }

  .page-faq .faq-image-row--feature {
    grid-template-columns: 5fr 7fr;
  }

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

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

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-toc {
    margin: 0;
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-content {
    gap: 72px;
  }
}