/* ========== 支持中心 FAQ 页面专属样式 ========== */
.page-faq {
  --faq-sidebar-w: 280px;
  padding: 2rem 0 5rem;
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.03) 0%, transparent 300px);
}

.page-faq .breadcrumb {
  margin-bottom: 2.5rem;
}

/* Hero */
.page-faq .faq-hero {
  position: relative;
  margin-bottom: 3rem;
  padding: 2.5rem 1.5rem;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 180px;
  height: 3px;
  background: var(--gradient-accent);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 65%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__kicker {
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-neon-green);
}

.page-faq .faq-hero__title {
  margin-bottom: 1.25rem;
  font-family: var(--font-heading);
  font-size: clamp(2.75rem, 7vw, 5rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lead {
  max-width: 640px;
  margin-bottom: 0;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-faq .faq-hero__map {
  margin-top: 2rem;
}

.page-faq .faq-hero__map-label {
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.page-faq .faq-map__item {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: 10px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq .faq-map__item + .faq-map__item {
  margin-top: 0.5rem;
}

.page-faq .faq-map__item:hover {
  border-color: rgba(0, 255, 135, 0.45);
  color: var(--color-text);
  transform: translateX(4px);
}

.page-faq .faq-map__num {
  min-width: 2rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-neon-green);
}

/* Layout */
.page-faq .faq-layout {
  display: grid;
  gap: 3rem;
}

.page-faq .faq-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Sidebar */
.page-faq .faq-cats__label {
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.page-faq .faq-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .faq-cats__link {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.875rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-cats__link:hover,
.page-faq .faq-cats__link:focus {
  color: var(--color-text);
  background: var(--color-glass);
}

.page-faq .faq-cats__link svg {
  flex-shrink: 0;
}

.page-faq .faq-aside-card {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.page-faq .faq-aside-card__fig {
  margin: 0;
  border-bottom: 1px solid var(--color-line);
}

.page-faq .faq-aside-card__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-aside-card__body {
  padding: 1.25rem;
}

.page-faq .faq-aside-card__title {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.page-faq .faq-aside-card__text {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* Main FAQ */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-section {
  margin-bottom: 3.5rem;
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-faq .faq-section__head {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-line);
}

.page-faq .faq-section__num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 300;
  line-height: 1;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-faq .faq-section__title {
  margin: 0;
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.page-faq .faq-section__desc {
  margin: 0.375rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* FAQ items */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-faq .faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(0, 212, 255, 0.45);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.22);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--color-electric-blue);
  outline-offset: -2px;
  border-radius: var(--radius-md);
}

.page-faq .faq-item__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  min-width: 2.25rem;
  height: 2.25rem;
  border-radius: 6px;
  background: rgba(0, 255, 135, 0.1);
  color: var(--color-neon-green);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
}

.page-faq .faq-item__q {
  flex: 1;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-text);
}

.page-faq .faq-item summary::after {
  content: "";
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-text-secondary);
  border-bottom: 2px solid var(--color-text-secondary);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  border-color: var(--color-electric-blue);
  transform: rotate(-135deg);
}

.page-faq .faq-item__a {
  padding: 0 1.5rem 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a a {
  color: var(--color-electric-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-fade-in 0.35s var(--ease);
}

@keyframes faq-fade-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Figure */
.page-faq .faq-figure {
  margin: 0 0 1.5rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

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

.page-faq .faq-figure figcaption {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--color-line);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Support card */
.page-faq .faq-support-card {
  margin-top: 2.5rem;
  padding: 2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 255, 135, 0.06), rgba(0, 212, 255, 0.06)), var(--color-surface);
}

.page-faq .faq-support-card__label {
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-neon-green);
}

.page-faq .faq-support-card__text {
  margin: 0 0 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-faq .faq-support-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-faq .faq-support-card__path {
  margin-top: 1.5rem;
}

.page-faq .faq-support-card .path {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-faq .faq-support-card .path__node {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-faq .faq-support-card .path__dot {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  border: 2px solid var(--color-text-secondary);
  border-radius: 50%;
  background: transparent;
}

.page-faq .faq-support-card .path__content {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.page-faq .faq-support-card .path__node--active .path__content {
  color: var(--color-text);
  font-weight: 500;
}

.page-faq .faq-support-card .path__node--active .path__dot {
  border-color: var(--color-neon-green);
  background: var(--color-neon-green);
  box-shadow: 0 0 12px rgba(0, 255, 135, 0.6);
}

/* Desktop */
@media (min-width: 920px) {
  .page-faq .faq-hero {
    padding: 3rem 2.5rem;
  }

  .page-faq .faq-hero__inner {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
    align-items: end;
  }

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

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-sidebar-w) minmax(0, 1fr);
    gap: 4rem;
    align-items: start;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-faq .faq-cats {
    flex-direction: column;
    gap: 0.25rem;
    padding-left: 1rem;
    border-left: 2px solid var(--color-line);
  }

  .page-faq .faq-cats__link {
    border-radius: 8px;
    white-space: normal;
  }

  .page-faq .faq-support-card {
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    gap: 2.5rem;
    align-items: center;
    padding: 2.5rem;
  }

  .page-faq .faq-support-card__path {
    margin-top: 0;
    padding-left: 2rem;
    border-left: 1px solid var(--color-line);
  }
}