.page-faq {
  --faq-hero-min-height: 420px;
  --faq-section-gap: 64px;
  --faq-card-radius: 16px;
  background: var(--color-bg-deep);
  color: var(--color-text);
  overflow-x: clip;
}

/* ===== Hero ===== */
.page-faq .faq-hero {
  position: relative;
  min-height: var(--faq-hero-min-height);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0.2;
}
.page-faq .faq-hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(11, 27, 46, 0.97) 0%,
    rgba(11, 27, 46, 0.82) 45%,
    rgba(18, 42, 60, 0.35) 100%
  );
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  padding-top: 40px;
  padding-bottom: 40px;
}
.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 800;
  line-height: 1.2;
  margin: 12px 0 16px;
  max-width: 12em;
  letter-spacing: 0.01em;
}
.page-faq .faq-hero__lead {
  max-width: 600px;
  color: var(--color-text-secondary);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 26px;
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.page-faq .faq-hero__stripe {
  position: absolute;
  right: -60px;
  top: -80px;
  width: 280px;
  height: 280px;
  z-index: 1;
  pointer-events: none;
  border: 2px solid rgba(0, 255, 136, 0.25);
  border-radius: 40px;
  transform: rotate(18deg);
}
.page-faq .faq-hero__stripe::before {
  content: '';
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(255, 106, 0, 0.25);
  border-radius: 24px;
  transform: rotate(-8deg);
}

/* ===== 热门问题 ===== */
.page-faq .faq-hot {
  padding: var(--faq-section-gap) 0;
}
.page-faq .faq-hot__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 28px;
}
.page-faq .faq-hot__title,
.page-faq .faq-cats__title,
.page-faq .faq-help__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.5vw, 34px);
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
}
.page-faq .faq-hot__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-faq .faq-hot__item {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 170px;
  padding: 22px 20px 18px;
  background: var(--color-bg-lighter);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-card-radius);
  text-decoration: none;
  color: var(--color-text);
  overflow: hidden;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}
.page-faq .faq-hot__item::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, transparent 50%, rgba(255, 106, 0, 0.14) 50%);
  border-radius: 0 0 0 14px;
}
.page-faq .faq-hot__item::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.page-faq .faq-hot__item:hover,
.page-faq .faq-hot__item:focus-visible {
  border-color: var(--color-accent-border);
  box-shadow: 0 0 26px var(--glow-green);
  transform: translateY(-4px);
  outline: none;
}
.page-faq .faq-hot__item:hover::after {
  opacity: 1;
}
.page-faq .faq-hot__num {
  display: block;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.page-faq .faq-hot__name {
  flex: 1;
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
}
.page-faq .faq-hot__cat {
  align-self: flex-start;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ===== 分类 + 手风琴 ===== */
.page-faq .faq-cats {
  padding: var(--faq-section-gap) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.page-faq .faq-cats__title {
  margin-bottom: 32px;
}
.page-faq .faq-cat-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.page-faq .faq-cat-layout__sidebar {
  background: var(--color-bg-lighter);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  align-self: start;
}
.page-faq .faq-cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}
.page-faq .faq-cat-list__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-left: 3px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}
.page-faq .faq-cat-list__link::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
  transition: background var(--transition-fast);
}
.page-faq .faq-cat-list__link:hover,
.page-faq .faq-cat-list__link:focus-visible {
  color: var(--color-accent);
  background: rgba(0, 255, 136, 0.06);
  border-left-color: var(--color-accent);
  outline: none;
}
.page-faq .faq-cat-list__link:hover::before {
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--glow-green-strong);
}
.page-faq .faq-cat-layout__side-img {
  margin: 20px 0 0;
  text-align: center;
}
.page-faq .faq-cat-layout__side-img img {
  display: inline-block;
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

/* 手风琴 */
.page-faq .faq-acc-group {
  margin-bottom: 40px;
}
.page-faq .faq-acc-group:last-of-type {
  margin-bottom: 0;
}
.page-faq .faq-acc-group__title {
  position: relative;
  display: inline-block;
  margin: 0 0 16px;
  padding-left: 16px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
}
.page-faq .faq-acc-group__title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: var(--color-orange);
}
.page-faq .faq-acc {
  --faq-acc-border: var(--color-border);
  background: var(--color-bg-lighter);
  border: 1px solid var(--faq-acc-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}
.page-faq .faq-acc[open] {
  --faq-acc-border: var(--color-accent-border);
  box-shadow: 0 0 24px rgba(0, 255, 136, 0.08);
}
.page-faq .faq-acc summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  user-select: none;
}
.page-faq .faq-acc summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-acc summary::after {
  content: '+';
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-accent-border);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 400;
  color: var(--color-accent);
  transition:
    transform var(--transition-base),
    background var(--transition-base);
}
.page-faq .faq-acc[open] summary::after {
  transform: rotate(45deg);
  background: rgba(0, 255, 136, 0.1);
}
.page-faq .faq-acc__content {
  padding: 0 20px 20px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.75;
  border-top: 1px dashed var(--color-border);
  margin-top: -4px;
}
.page-faq .faq-acc__content p {
  margin: 18px 0 0;
}
.page-faq .faq-acc__content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-acc__content a:hover {
  color: var(--color-accent-dark);
}

/* ===== 搜索与反馈 ===== */
.page-faq .faq-help {
  padding: var(--faq-section-gap) 0;
}
.page-faq .faq-help__panel {
  background: linear-gradient(135deg, var(--color-bg-lighter) 0%, var(--color-bg) 70%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-panel);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-help__panel::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  border: 2px solid rgba(255, 106, 0, 0.18);
  border-radius: 50%;
  pointer-events: none;
}
.page-faq .faq-help__desc {
  margin: 14px 0 0;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.6;
}
.page-faq .faq-help__search {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}
.page-faq .faq-help__search input {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-deep);
  color: var(--color-text);
  font-size: 15px;
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}
.page-faq .faq-help__search input::placeholder {
  color: rgba(154, 184, 216, 0.55);
}
.page-faq .faq-help__search input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.14);
}
.page-faq .faq-help__search .btn {
  flex-shrink: 0;
  white-space: nowrap;
}
.page-faq .faq-help__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}
.page-faq .faq-help__tags-label {
  font-size: 13px;
  color: var(--color-text-secondary);
}
.page-faq .faq-help__tags a {
  text-decoration: none;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}
.page-faq .faq-help__tags a:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 16px var(--glow-green);
}
.page-faq .faq-help__contact {
  display: grid;
  gap: 0;
  margin-top: 28px;
  border-top: 1px solid var(--color-border);
}
.page-faq .faq-help__contact-item {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 15px;
}
.page-faq .faq-help__contact-label {
  color: var(--color-text-secondary);
  font-size: 13px;
}
.page-faq .faq-help__phone {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.03em;
}
.page-faq .faq-help__contact-btn {
  width: 100%;
  justify-content: center;
  margin-top: 20px;
}

/* ===== 响应式增强 ===== */
@media (min-width: 768px) {
  .page-faq {
    --faq-section-gap: 80px;
  }
  .page-faq .faq-hero {
    min-height: 460px;
  }
  .page-faq .faq-hot__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-faq .faq-cat-layout__sidebar {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }
  .page-faq .faq-help__panel {
    padding: 44px 40px;
  }
  .page-faq .faq-help__contact {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .page-faq .faq-help__contact-item {
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    border-bottom: none;
    padding: 6px 0;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hot__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-faq .faq-cat-layout {
    grid-template-columns: 260px 1fr;
    gap: 48px;
    align-items: start;
  }
  .page-faq .faq-cat-layout__sidebar {
    border-radius: var(--radius-lg);
  }
}

@media (min-width: 1440px) {
  .page-faq .faq-hero__inner {
    padding-top: 60px;
    padding-bottom: 60px;
  }
  .page-faq .faq-hero__title {
    font-size: 48px;
  }
}