.page-faq {
  --faq-purple: var(--color-accent);
  --faq-purple-bright: var(--color-accent-bright);
  --faq-gold: var(--color-accent-2);
  --faq-line: var(--color-line);
  --faq-text-muted: var(--color-text-secondary);
  --faq-card-bg: rgba(255, 255, 255, 0.05);
  --faq-card-bg-strong: rgba(255, 255, 255, 0.08);
  --faq-radius: var(--radius-md);
  --faq-radius-lg: var(--radius-lg);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ========== Hero 区块 ========== */
.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 48px;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-light) 100%);
  border-bottom: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(var(--faq-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-line) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.16;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123, 47, 222, 0.28) 0%, transparent 70%);
  pointer-events: none;
}

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

.page-faq .hero-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 28px;
}

.page-faq .hero-copy {
  flex: 1 1 55%;
}

.page-faq .hero-eyebrow,
.page-faq .support-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faq-gold);
  background: rgba(245, 166, 35, 0.12);
  border: 1px solid rgba(245, 166, 35, 0.35);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  margin-bottom: 16px;
}

.page-faq .hero-copy h1 {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-size: 30px;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.page-faq .hero-desc {
  margin: 0 0 24px;
  color: var(--faq-text-muted);
  font-size: 14px;
  line-height: 1.75;
  max-width: 560px;
}

.page-faq .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-bottom: 24px;
}

.page-faq .stat-block {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  padding: 14px 18px;
  margin-right: 12px;
  margin-bottom: 10px;
  min-width: 108px;
}

.page-faq .stat-block:last-child {
  margin-right: 0;
}

.page-faq .stat-label {
  display: block;
  font-size: 12px;
  color: var(--faq-text-muted);
  margin-bottom: 4px;
}

.page-faq .stat-value {
  display: block;
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
}

.page-faq .stat-value::after {
  content: "";
  display: block;
  width: 26px;
  height: 3px;
  border-radius: 3px;
  margin-top: 6px;
  background: linear-gradient(90deg, var(--faq-purple-bright), var(--faq-gold));
}

.page-faq .faq-search {
  position: relative;
  display: flex;
  align-items: center;
  max-width: 560px;
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  padding: 4px 8px 4px 16px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-search:focus-within {
  border-color: var(--faq-purple-bright);
  box-shadow: 0 0 0 3px rgba(123, 47, 222, 0.22);
}

.page-faq .search-icon {
  width: 18px;
  height: 18px;
  border: 2px solid var(--faq-text-muted);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  margin-right: 10px;
  opacity: 0.85;
}

.page-faq .search-icon::after {
  content: "";
  position: absolute;
  bottom: -5px;
  right: -6px;
  width: 7px;
  height: 2px;
  background: var(--faq-text-muted);
  transform: rotate(45deg);
  border-radius: 2px;
}

.page-faq .faq-search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 10px 6px;
  min-width: 0;
}

.page-faq .faq-search-input::placeholder {
  color: rgba(168, 198, 240, 0.55);
}

.page-faq .hero-figure {
  flex: 0 0 100%;
  margin: 0;
  border-radius: var(--faq-radius-lg);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--faq-card-bg);
}

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

/* ========== 知识库区域 ========== */
.page-faq .faq-kb {
  padding: 44px 0 12px;
}

.page-faq .faq-kb-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-faq .faq-sidebar {
  flex: 0 0 260px;
}

.page-faq .sidebar-sticky {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius-lg);
  padding: 22px 18px;
}

.page-faq .sidebar-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faq-gold);
  margin: 0 0 14px;
}

.page-faq .faq-cat-nav {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .cat-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  background: transparent;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  padding: 10px 16px;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.page-faq .cat-link:hover {
  border-color: var(--faq-purple-bright);
  background: rgba(123, 47, 222, 0.14);
}

.page-faq .cat-link:focus-visible {
  outline: 2px solid var(--faq-purple-bright);
  outline-offset: 2px;
}

.page-faq .cat-index {
  font-size: 12px;
  font-weight: 700;
  color: var(--faq-text-muted);
  font-family: var(--font-heading);
  transition: color 0.25s ease;
}

.page-faq .cat-link:hover .cat-index {
  color: var(--faq-gold);
}

.page-faq .sidebar-data {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .sidebar-data-label {
  font-size: 12px;
  color: var(--faq-text-muted);
  margin: 0 0 6px;
}

.page-faq .sidebar-data-value {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 700;
  margin: 0;
  line-height: 1.1;
  color: var(--faq-gold);
}

.page-faq .sidebar-data-desc {
  font-size: 12px;
  color: var(--faq-text-muted);
  margin: 4px 0 0;
}

/* ========== 问题面板 ========== */
.page-faq .faq-board {
  flex: 1 1 100%;
  min-width: 0;
}

.page-faq .cat-block {
  padding-bottom: 28px;
  margin-bottom: 4px;
}

.page-faq .block-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .block-index {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--faq-gold);
  background: rgba(245, 166, 35, 0.1);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
}

.page-faq .block-head h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.page-faq .faq-item {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  margin-bottom: 14px;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(123, 47, 222, 0.55);
  box-shadow: 0 4px 20px rgba(11, 27, 58, 0.16);
}

.page-faq .faq-item[open] {
  border-color: rgba(245, 166, 35, 0.5);
  background: var(--faq-card-bg-strong);
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  user-select: none;
  border-radius: var(--faq-radius);
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--faq-purple-bright);
  outline-offset: 2px;
}

.page-faq .faq-q {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--color-text);
  flex: 1;
}

.page-faq .faq-toggle {
  position: relative;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--faq-line);
  flex-shrink: 0;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-text);
  border-radius: 2px;
  transition: opacity 0.2s ease;
}

.page-faq .faq-toggle::before {
  width: 10px;
  height: 2px;
}

.page-faq .faq-toggle::after {
  width: 2px;
  height: 10px;
}

.page-faq .faq-item[open] .faq-toggle {
  background: rgba(245, 166, 35, 0.18);
  border-color: var(--faq-gold);
}

.page-faq .faq-item[open] .faq-toggle::after {
  opacity: 0;
}

.page-faq .faq-item:hover .faq-toggle {
  border-color: var(--faq-purple-bright);
}

.page-faq .faq-answer {
  padding: 0 20px 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-text-muted);
  border-top: 1px dashed rgba(42, 74, 127, 0.35);
  margin-top: 0;
}

.page-faq .faq-answer p {
  margin: 14px 0 0;
}

/* ========== 热门问题 ========== */
.page-faq .hot-block {
  margin-top: 20px;
  padding-top: 28px;
  border-top: 2px solid var(--faq-line);
}

.page-faq .hot-head {
  margin-bottom: 20px;
}

.page-faq .hot-head h2 {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-faq .hot-head p {
  margin: 0;
  font-size: 13px;
  color: var(--faq-text-muted);
}

.page-faq .hot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .hot-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  padding: 18px 20px;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
  overflow: hidden;
}

.page-faq .hot-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(225deg, rgba(123, 47, 222, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30px, -30px);
  transition: transform 0.3s ease;
}

.page-faq .hot-card:hover {
  border-color: var(--faq-purple-bright);
  background: var(--faq-card-bg-strong);
  transform: translateY(-2px);
}

.page-faq .hot-card:hover::after {
  transform: translate(16px, -16px) scale(1.25);
}

.page-faq .hot-card:focus-visible {
  outline: 2px solid var(--faq-purple-bright);
  outline-offset: 2px;
}

.page-faq .hot-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--faq-gold);
  background: rgba(245, 166, 35, 0.1);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  margin-bottom: 6px;
}

.page-faq .hot-question {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .hot-hint {
  font-size: 13px;
  color: var(--faq-text-muted);
  line-height: 1.5;
}

.page-faq .hot-arrow {
  position: absolute;
  right: 18px;
  bottom: 16px;
  font-size: 18px;
  color: var(--faq-purple-bright);
  font-weight: 700;
  transition: right 0.25s ease;
}

.page-faq .hot-card:hover .hot-arrow {
  right: 14px;
}

/* ========== 联系支持区块 ========== */
.page-faq .faq-support {
  padding: 44px 0 60px;
  background: linear-gradient(180deg, transparent 0%, rgba(22, 48, 95, 0.35) 100%);
}

.page-faq .faq-support-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-faq .support-card {
  background: var(--faq-card-bg);
  border: 1px solid rgba(245, 166, 35, 0.55);
  border-radius: var(--faq-radius-lg);
  padding: 28px 24px;
  flex: 1;
  box-shadow: 0 8px 30px rgba(11, 27, 58, 0.2);
}

.page-faq .support-card h2 {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-faq .support-desc {
  margin: 0 0 24px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-text-muted);
}

.page-faq .support-methods {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.page-faq .support-method {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  padding: 14px 16px;
  transition: border-color 0.25s ease;
}

.page-faq .support-method:hover {
  border-color: rgba(245, 166, 35, 0.45);
}

.page-faq .method-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faq-text-muted);
  margin-bottom: 4px;
}

.page-faq .method-value {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.5;
  word-break: break-all;
}

.page-faq .method-note {
  display: block;
  font-size: 12px;
  color: var(--faq-text-muted);
  margin-top: 3px;
}

.page-faq .support-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.page-faq .support-figure {
  flex: 0 0 100%;
  margin: 0;
  border-radius: var(--faq-radius-lg);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--faq-card-bg);
}

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

/* ========== 媒体查询：平板端 ========== */
@media (min-width: 768px) {
  .page-faq .hero-grid {
    flex-direction: row;
    align-items: center;
  }

  .page-faq .hero-copy {
    padding-right: 8px;
  }

  .page-faq .hero-figure {
    flex: 0 0 46%;
    margin: 0;
  }

  .page-faq .hero-img {
    aspect-ratio: 8 / 3;
  }

  .page-faq .faq-kb-grid {
    flex-direction: row;
    align-items: flex-start;
    gap: 32px;
  }

  .page-faq .faq-sidebar {
    flex: 0 0 240px;
  }

  .page-faq .sidebar-sticky {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-cat-nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-faq .cat-link {
    justify-content: flex-start;
    border-radius: var(--radius-pill);
    margin-bottom: 4px;
    border: 1px solid transparent;
    padding: 11px 16px;
  }

  .page-faq .cat-link:hover {
    border-color: var(--faq-purple-bright);
    background: rgba(123, 47, 222, 0.14);
  }

  .page-faq .faq-board {
    flex: 1 1 auto;
  }

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

  .page-faq .faq-support-grid {
    flex-direction: row;
    align-items: center;
  }

  .page-faq .support-figure {
    flex: 0 0 38%;
    margin: 0;
  }

  .page-faq .support-figure img {
    aspect-ratio: 3 / 2;
  }
}

/* ========== 媒体查询：桌面端 ========== */
@media (min-width: 1100px) {
  .page-faq .faq-hero {
    padding: 48px 0 56px;
  }

  .page-faq .hero-copy h1 {
    font-size: 38px;
  }

  .page-faq .hero-desc {
    font-size: 15px;
  }

  .page-faq .faq-sidebar {
    flex-basis: 280px;
  }

  .page-faq .faq-kb {
    padding: 52px 0 16px;
  }

  .page-faq .support-card {
    padding: 32px 36px;
  }

  .page-faq .faq-support {
    padding: 52px 0 72px;
  }
}