/* ===== 页面专属：问题解答 FAQ ===== */
.page-faq {
  --faq-hero-min-h: 18rem;
  --faq-tag-radius: 2rem;
  --faq-item-radius: 0.75rem;
  --faq-transition: 0.25s ease;
  color: var(--color-white);
  background: var(--color-bg-dark);
}

/* ---- Hero ---- */
.page-faq .faq-hero {
  position: relative;
  min-height: var(--faq-hero-min-h);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-blue);
}
.page-faq .faq-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  pointer-events: none;
}
.page-faq .faq-hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  width: 100%;
  padding: 2.5rem 1.5rem;
  text-align: center;
}
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-gray-light);
  margin-bottom: 1.5rem;
}
.page-faq .breadcrumb a {
  color: var(--color-orange);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: color var(--faq-transition);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--color-white);
}
.page-faq .breadcrumb-sep {
  color: var(--color-gray-light);
  margin: 0 0.15rem;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--color-white);
  font-weight: 700;
}
.page-faq .page-title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 12vw, 6rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  color: var(--color-white);
  text-transform: uppercase;
}
.page-faq .faq-hero-desc {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-gray-light);
  max-width: 42rem;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---- Layout container ---- */
.page-faq .faq-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* ---- Toolbar: search + tags ---- */
.page-faq .faq-toolbar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.page-faq .faq-search-wrap {
  position: relative;
  width: 100%;
  max-width: 36rem;
  margin: 0 auto;
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.2rem;
  height: 1.2rem;
  color: var(--color-gray-light);
  pointer-events: none;
}
.page-faq .faq-search-input {
  display: block;
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 2.8rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-bg-dark);
  background: var(--color-bg-warm);
  border: 2px solid var(--color-border-warm);
  border-radius: 2.5rem;
  outline: none;
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
  -webkit-appearance: none;
  appearance: none;
}
.page-faq .faq-search-input::placeholder {
  color: #9e9e9e;
  opacity: 1;
}
.page-faq .faq-search-input:focus {
  border-color: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(255,111,0,0.2);
}
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}
.page-faq .faq-tag {
  display: inline-block;
  padding: 0.5rem 1.6rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-white);
  background: transparent;
  border: 2px solid var(--color-border-warm);
  border-radius: var(--faq-tag-radius);
  text-decoration: none;
  transition: all var(--faq-transition);
  cursor: pointer;
  user-select: none;
}
.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-bg-dark);
  outline: none;
}

/* ---- FAQ Sections ---- */
.page-faq .faq-sections {
  display: flex;
  flex-direction: column;
  gap: 2.75rem;
}

/* ---- Category ---- */
.page-faq .faq-category {
  scroll-margin-top: 6rem;
}
.page-faq .category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--color-blue);
}
.page-faq .category-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 0.5rem;
  background: var(--color-bg-warm);
  padding: 4px;
}
.page-faq .category-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-white);
  margin: 0;
  text-transform: uppercase;
}

/* ---- Individual FAQ item (details) ---- */
.page-faq .faq-item {
  display: block;
  margin-bottom: 0.75rem;
  background: var(--color-bg-warm);
  border-radius: var(--faq-item-radius);
  border: 1px solid var(--color-border-warm);
  overflow: hidden;
  transition: border-color var(--faq-transition);
  color: var(--color-bg-dark);
}
.page-faq .faq-item[open] {
  border-color: var(--color-blue);
}
.page-faq .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-bg-dark);
  background: var(--color-bg-warm);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background var(--faq-transition), color var(--faq-transition);
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question::marker {
  display: none;
  content: "";
}
.page-faq .faq-question:hover,
.page-faq .faq-question:focus-visible {
  background: #ede7e0;
}
.page-faq .faq-item[open] .faq-question {
  background: var(--color-blue);
  color: var(--color-white);
}
.page-faq .faq-indicator {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  position: relative;
  transition: transform var(--faq-transition);
}
.page-faq .faq-indicator::before,
.page-faq .faq-indicator::after {
  content: "";
  position: absolute;
  background: currentColor;
  border-radius: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.page-faq .faq-indicator::before {
  width: 2px;
  height: 1rem;
}
.page-faq .faq-indicator::after {
  width: 1rem;
  height: 2px;
}
.page-faq .faq-item[open] .faq-indicator {
  transform: rotate(45deg);
}
.page-faq .faq-item[open] .faq-indicator::before {
  height: 0;
}
.page-faq .faq-answer {
  padding: 1.25rem 1.5rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-bg-dark);
  background: var(--color-bg-warm);
  border-top: 1px solid var(--color-border-warm);
}
.page-faq .faq-answer p {
  margin: 0 0 0.6rem;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer a {
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  font-weight: 600;
  transition: color var(--faq-transition);
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--color-orange);
}

/* ---- Contact section ---- */
.page-faq .faq-contact {
  margin-top: 1.5rem;
  background: var(--color-blue);
  border-radius: 1rem;
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--color-white);
}
.page-faq .faq-contact-inner {
  max-width: 34rem;
  margin: 0 auto;
}
.page-faq .faq-contact-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.page-faq .faq-contact-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray-light);
  margin: 0 0 1.25rem;
}
.page-faq .faq-contact-desc strong {
  color: var(--color-orange);
  font-weight: 700;
}
.page-faq .faq-contact-channels {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.2rem 2rem;
  margin-bottom: 1.5rem;
}
.page-faq .faq-channel {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-white);
  background: rgba(255,255,255,0.08);
  padding: 0.4rem 1rem;
  border-radius: 2rem;
  border: 1px solid rgba(255,255,255,0.15);
}
.page-faq .faq-channel svg {
  flex-shrink: 0;
  color: var(--color-orange);
}
.page-faq .faq-contact-btn {
  display: inline-block;
  padding: 0.7rem 2.2rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-bg-dark);
  background: var(--color-orange);
  border: none;
  border-radius: 2.5rem;
  text-decoration: none;
  transition: all var(--faq-transition);
  cursor: pointer;
}
.page-faq .faq-contact-btn:hover,
.page-faq .faq-contact-btn:focus-visible {
  background: var(--color-white);
  color: var(--color-blue);
  outline: none;
}

/* ---- Button shared override within page context ---- */
.page-faq .btn {
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: none;
  border-radius: 2.5rem;
  transition: all var(--faq-transition);
  cursor: pointer;
}

/* ===== 响应式 ===== */
@media (max-width: 640px) {
  .page-faq .faq-hero {
    min-height: 14rem;
  }
  .page-faq .faq-hero-content {
    padding: 1.5rem 1rem;
  }
  .page-faq .page-title {
    font-size: 2.4rem;
  }
  .page-faq .faq-hero-desc {
    font-size: 0.95rem;
  }
  .page-faq .faq-layout {
    padding: 1.5rem 1rem 3rem;
    gap: 1.75rem;
  }
  .page-faq .faq-tags {
    gap: 0.5rem;
  }
  .page-faq .faq-tag {
    padding: 0.4rem 1.2rem;
    font-size: 0.8rem;
  }
  .page-faq .category-icon {
    width: 36px;
    height: 36px;
  }
  .page-faq .category-title {
    font-size: 1.3rem;
  }
  .page-faq .faq-question {
    font-size: 0.95rem;
    padding: 0.9rem 1rem;
  }
  .page-faq .faq-answer {
    padding: 1rem 1.15rem 1.25rem;
    font-size: 0.9rem;
  }
  .page-faq .faq-contact {
    padding: 2rem 1.25rem;
  }
  .page-faq .faq-contact-channels {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }
  .page-faq .faq-search-input {
    font-size: 0.95rem;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-toolbar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .page-faq .faq-search-wrap {
    margin: 0;
    flex: 1 1 20rem;
  }
  .page-faq .faq-tags {
    flex: 0 0 auto;
  }
  .page-faq .faq-category {
    padding-left: 0.5rem;
  }
  .page-faq .category-header {
    padding-left: 0.25rem;
  }
}