.page-faq {
  --faq-section-pad: var(--space-5);
  --faq-item-pad-x: 20px;
  --faq-item-pad-y: 18px;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
}

/* ==================== Hero ==================== */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-5)) 0 var(--space-5);
  background:
    radial-gradient(ellipse 50% 60% at 85% 20%, rgba(0, 212, 255, 0.16), transparent 70%),
    linear-gradient(120deg, var(--color-bg) 60%, var(--color-bg-secondary));
  border-bottom: 2px solid var(--color-border);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-blue), var(--color-accent-green), var(--color-accent-gold));
}

.page-faq .faq-hero::after {
  content: '';
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  border: 2px solid rgba(57, 255, 20, 0.18);
  transform: rotate(15deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

.page-faq .faq-hero__content {
  max-width: 680px;
}

.page-faq .faq-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 var(--space-4);
  padding: 0;
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--color-accent-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-faq .faq-hero .breadcrumb a:hover {
  border-color: var(--color-accent-blue);
}

.page-faq .faq-hero .breadcrumb__sep,
.page-faq .faq-hero .breadcrumb__current {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--color-accent-green);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-size: 38px;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.page-faq .faq-hero__lead {
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-muted);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .faq-hero__actions .btn {
  margin: 0;
}

.page-faq .faq-hero__visual {
  display: flex;
  justify-content: center;
}

.page-faq .faq-hero__visual-frame {
  position: relative;
  width: 100%;
  max-width: 340px;
  padding: var(--space-3);
  border: 2px solid var(--color-border);
  background: var(--color-bg-secondary);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.35);
  transform: rotate(2deg);
  transition: transform var(--transition), border-color var(--transition);
}

.page-faq .faq-hero__visual-frame:hover {
  transform: rotate(0deg);
  border-color: var(--color-accent-blue);
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--color-border);
}

.page-faq .faq-hero__visual-caption {
  display: block;
  margin-top: var(--space-2);
  text-align: right;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

/* ==================== 分类导航 ==================== */
.page-faq .faq-cats {
  position: sticky;
  top: var(--header-height);
  z-index: 20;
  background: rgba(11, 15, 26, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.page-faq .faq-cats__inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-top: 12px;
  padding-bottom: 12px;
  scrollbar-width: thin;
}

.page-faq .faq-cats__link {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  background: var(--color-bg-secondary);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: border-color var(--transition), color var(--transition), background var(--transition), transform var(--transition);
}

.page-faq .faq-cats__link:hover {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  background: rgba(0, 212, 255, 0.06);
  transform: translateY(-1px);
}

.page-faq .faq-cats__link:focus-visible {
  outline: 2px solid var(--color-accent-green);
  outline-offset: 2px;
}

/* ==================== 快速通道 ==================== */
.page-faq .faq-channels {
  padding: var(--space-4) 0;
  background: var(--color-bg);
}

.page-faq .faq-channels__grid {
  display: grid;
  gap: var(--space-2);
}

.page-faq .faq-channels__card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  background: var(--color-bg-secondary);
  text-decoration: none;
  color: var(--color-text);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.25);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.page-faq .faq-channels__card:hover {
  border-color: var(--color-accent-blue);
  transform: translateY(-2px);
  box-shadow: 6px 6px 0 rgba(0, 212, 255, 0.12);
}

.page-faq .faq-channels__index {
  flex: 0 0 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent-blue);
  background: var(--color-bg);
}

.page-faq .faq-channels__text {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
}

.page-faq .faq-channels__desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-muted);
}

/* ==================== 数据指标 ==================== */
.page-faq .faq-metrics {
  border-top: 2px solid var(--color-border);
  border-bottom: 2px solid var(--color-border);
  background: var(--color-bg-secondary);
}

.page-faq .faq-metrics__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.page-faq .faq-metrics__item {
  position: relative;
  padding: var(--space-4) var(--space-2);
  text-align: center;
}

.page-faq .faq-metrics__item + .faq-metrics__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 24%;
  height: 52%;
  width: 1px;
  background: var(--color-border);
}

.page-faq .faq-metrics__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-accent-blue);
}

.page-faq .faq-metrics__item:nth-child(even) .faq-metrics__num {
  color: var(--color-accent-green);
}

.page-faq .faq-metrics__item:nth-child(2) .faq-metrics__num {
  font-size: 28px;
}

.page-faq .faq-metrics__label {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
}

/* ==================== 版块公共 ==================== */
.page-faq .faq-section {
  padding: var(--faq-section-pad) 0;
  scroll-margin-top: 110px;
  border-bottom: 1px solid var(--color-border);
}

.page-faq .faq-section__head {
  max-width: 720px;
  margin-bottom: var(--space-4);
}

.page-faq .faq-section__head h2 {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 30px;
  line-height: 1.2;
  color: var(--color-text);
}

.page-faq .faq-section__badge {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 2px;
  background: var(--color-accent-blue);
  color: var(--color-bg);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-faq .faq-section--hot .faq-section__badge {
  background: var(--color-accent-green);
  color: var(--color-bg);
}

.page-faq .faq-section--login .faq-section__badge {
  background: var(--color-accent-blue);
  color: var(--color-bg);
}

.page-faq .faq-section--query .faq-section__badge {
  background: var(--color-accent-blue);
  color: var(--color-bg);
}

.page-faq .faq-section--history .faq-section__badge {
  background: var(--color-accent-gold);
  color: var(--color-bg);
}

.page-faq .faq-section--subscribe .faq-section__badge {
  background: var(--color-accent-green);
  color: var(--color-bg);
}

.page-faq .faq-section__desc {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* ==================== 手风琴 ==================== */
.page-faq .faq-accordion {
  display: grid;
  gap: var(--space-2);
}

.page-faq .faq-item {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  background: var(--color-bg-secondary);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.25);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.page-faq .faq-item[open] {
  border-color: var(--color-accent-blue);
  box-shadow: 8px 8px 0 rgba(0, 212, 255, 0.1);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.04), transparent 60%), var(--color-bg-secondary);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: var(--faq-item-pad-y) var(--faq-item-pad-x);
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  transition: color var(--transition);
}

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

.page-faq .faq-item summary:hover {
  color: var(--color-accent-blue);
}

.page-faq .faq-item__q {
  display: block;
  flex: 1;
}

.page-faq .faq-item__tag {
  flex: 0 0 auto;
  padding: 3px 8px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background: var(--color-bg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent-blue);
}

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  color: var(--color-text-muted);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 22px;
  height: 2px;
  background: currentColor;
  transform: translateY(-50%);
  transition: transform 0.3s ease, background 0.3s ease;
}

.page-faq .faq-item__icon::after {
  transform: translateY(-50%) rotate(90deg);
}

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

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-item__body {
  padding: 0 var(--faq-item-pad-x) 22px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-muted);
}

.page-faq .faq-item__body p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__body a {
  color: var(--color-accent-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition);
}

.page-faq .faq-item__body a:hover {
  color: var(--color-accent-green);
}

/* ==================== 数据查询区块 ==================== */
.page-faq .faq-query-grid {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-faq .faq-query-panel {
  padding: var(--space-3);
  border: 2px solid var(--color-border);
  background: var(--color-bg-secondary);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.35);
  transform: rotate(1deg);
  transition: transform var(--transition), border-color var(--transition);
}

.page-faq .faq-query-panel:hover {
  transform: rotate(0deg);
  border-color: var(--color-accent-blue);
}

.page-faq .faq-query-panel img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--color-border);
  background: var(--color-bg);
}

.page-faq .faq-query-panel__caption {
  display: block;
  margin-top: var(--space-2);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

/* ==================== 历史资料区块 ==================== */
.page-faq .faq-history-layout {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-faq .faq-history-side {
  padding: var(--space-3);
  border: 2px solid var(--color-border);
  background: var(--color-bg-secondary);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.35);
}

.page-faq .faq-history-side__title {
  margin: 0 0 var(--space-3);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--color-accent-gold);
}

.page-faq .faq-timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 2px solid rgba(255, 215, 0, 0.35);
}

.page-faq .faq-timeline__item {
  position: relative;
  padding: 0 0 var(--space-3) 22px;
}

.page-faq .faq-timeline__item:last-child {
  padding-bottom: 0;
}

.page-faq .faq-timeline__item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 2px;
  width: 12px;
  height: 12px;
  background: var(--color-accent-gold);
  transform: rotate(45deg);
}

.page-faq .faq-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-accent-gold);
}

.page-faq .faq-timeline__text {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* ==================== 订阅与回看区块 ==================== */
.page-faq .faq-subscribe-grid {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-faq .faq-rhythm {
  padding: var(--space-3);
  border: 2px solid var(--color-border);
  background: var(--color-bg-secondary);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.35);
}

.page-faq .faq-rhythm__title {
  margin: 0 0 var(--space-2);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--color-accent-green);
}

.page-faq .faq-rhythm__lead {
  margin: 0 0 var(--space-3);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
}

.page-faq .faq-rhythm__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .faq-rhythm__item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.page-faq .faq-rhythm__step {
  flex: 0 0 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background: var(--color-bg-elevated);
  color: var(--color-accent-green);
  font-size: 13px;
  font-weight: 700;
}

.page-faq .faq-rhythm__item strong {
  display: block;
  font-size: 16px;
  color: var(--color-text);
}

.page-faq .faq-rhythm__item div span {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.page-faq .faq-rhythm__note {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ==================== 联系区块 ==================== */
.page-faq .faq-contact {
  padding: var(--space-6) 0;
  background:
    linear-gradient(150deg, rgba(0, 212, 255, 0.1), transparent 60%),
    var(--color-bg);
  border-top: 2px solid var(--color-border);
  border-bottom: 2px solid var(--color-border);
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: var(--space-4);
  align-items: center;
}

.page-faq .faq-contact__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: 30px;
  line-height: 1.2;
  color: var(--color-text);
}

.page-faq .faq-contact__desc {
  margin: 0 0 var(--space-3);
  max-width: 560px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

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

.page-faq .faq-contact__info {
  display: grid;
  gap: 10px;
  padding: var(--space-3);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  background: var(--color-bg-secondary);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.35);
}

.page-faq .faq-contact__info .text-mono {
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text);
  word-break: break-all;
}

.page-faq .faq-contact__info .text-mono:first-child {
  color: var(--color-accent-blue);
}

/* ==================== 响应式 ==================== */
@media (min-width: 480px) {
  .page-faq .faq-metrics__num {
    font-size: 36px;
  }

  .page-faq .faq-metrics__item:nth-child(2) .faq-metrics__num {
    font-size: 32px;
  }
}

@media (min-width: 768px) {
  .page-faq {
    --faq-section-pad: var(--space-6);
  }

  .page-faq .faq-hero h1 {
    font-size: 48px;
  }

  .page-faq .faq-hero__lead {
    font-size: 18px;
  }

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

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

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

  .page-faq .faq-section__desc {
    font-size: 17px;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: 1.4fr 1fr;
  }

  .page-faq .faq-contact__info {
    gap: 12px;
    padding: var(--space-4);
  }

  .page-faq .faq-contact__info .text-mono {
    font-size: 15px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .page-faq {
    --faq-section-pad: var(--space-7);
  }

  .page-faq .faq-query-grid {
    grid-template-columns: 1.4fr 1fr;
  }

  .page-faq .faq-history-layout {
    grid-template-columns: 1fr 320px;
  }

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

  .page-faq .faq-item__tag {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}