.page-faq {
  --faq-gap: 1.5rem;
  --faq-radius: 12px;
  --faq-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1rem 1rem 3rem;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  background: var(--color-primary, #0B1D3A);
  color: var(--color-white, #FFFFFF);
  font-family: var(--font-body, 'Noto Sans SC', 'Microsoft YaHei', sans-serif);
  line-height: var(--line-height-body, 1.7);
}

/* ---------- 面包屑 ---------- */
.faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--text-small, 0.875rem);
  color: var(--color-gray, #B0B8C4);
  margin-bottom: 0.5rem;
}
.faq-breadcrumb a {
  color: var(--color-accent, #F5C518);
  text-decoration: none;
  transition: opacity var(--faq-transition);
}
.faq-breadcrumb a:hover {
  opacity: 0.8;
}
.faq-breadcrumb-sep {
  user-select: none;
  opacity: 0.5;
}
.faq-breadcrumb [aria-current="page"] {
  color: var(--color-white, #FFFFFF);
  font-weight: 600;
}

/* ---------- Hero ---------- */
.faq-hero {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}
.faq-title {
  font-family: var(--font-heading, 'Montserrat', 'Impact', sans-serif);
  font-size: var(--text-h1, 2rem);
  font-weight: 800;
  font-style: italic;
  line-height: var(--line-height-heading, 1.1);
  color: var(--color-accent, #F5C518);
  margin: 0;
  letter-spacing: -0.02em;
}
.faq-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 32rem;
}
.faq-search-icon {
  position: absolute;
  left: 1rem;
  color: var(--color-gray, #B0B8C4);
  pointer-events: none;
  flex-shrink: 0;
}
.faq-search-input {
  display: block;
  width: 100%;
  padding: 0.8rem 1rem 0.8rem 3rem;
  border: 2px solid var(--color-border, #2D3A4A);
  border-radius: 999px;
  background: var(--color-card, #1A2332);
  color: var(--color-white, #FFFFFF);
  font-family: var(--font-body, 'Noto Sans SC', 'Microsoft YaHei', sans-serif);
  font-size: var(--text-body, 1rem);
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
  outline: none;
}
.faq-search-input::placeholder {
  color: var(--color-gray, #B0B8C4);
  opacity: 0.7;
}
.faq-search-input:focus {
  border-color: var(--color-accent, #F5C518);
  box-shadow: 0 0 0 3px rgba(245, 197, 24, 0.15);
}
.faq-hero-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--faq-radius);
  border: 1px solid var(--color-border, #2D3A4A);
  aspect-ratio: 800 / 400;
  margin-top: 0.5rem;
}

/* ---------- Section ---------- */
.faq-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--faq-radius);
  border: 1px solid var(--color-border, #2D3A4A);
  background: rgba(26, 35, 50, 0.6);
  transition: background var(--faq-transition);
}
.faq-section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.faq-section-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--color-border, #2D3A4A);
}
.faq-section-title {
  font-family: var(--font-heading, 'Montserrat', 'Impact', sans-serif);
  font-size: var(--text-h2, 1.75rem);
  font-weight: 700;
  font-style: italic;
  line-height: var(--line-height-heading, 1.1);
  color: var(--color-white, #FFFFFF);
  margin: 0;
}
.faq-section-body {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ---------- Accordion Item ---------- */
.faq-item {
  border-radius: var(--faq-radius);
  border: 1px solid var(--color-border, #2D3A4A);
  background: var(--color-card, #1A2332);
  transition: border-color var(--faq-transition), background var(--faq-transition);
  overflow: hidden;
}
.faq-item[open] {
  border-color: var(--color-accent, #F5C518);
  background: linear-gradient(135deg, #1E2A3E 0%, #1A2332 100%);
}
.faq-item-summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--faq-transition);
}
.faq-item-summary::-webkit-details-marker {
  display: none;
}
.faq-item-summary::marker {
  content: "";
  display: none;
}
.faq-item-summary:hover {
  background: rgba(245, 197, 24, 0.04);
}
.faq-item-icon {
  flex-shrink: 0;
  color: var(--color-gray, #B0B8C4);
  transition: color var(--faq-transition);
}
.faq-item[open] .faq-item-icon {
  color: var(--color-accent, #F5C518);
}
.faq-item-question {
  flex: 1;
  font-family: var(--font-heading, 'Montserrat', 'Impact', sans-serif);
  font-size: var(--text-body, 1rem);
  font-weight: 600;
  color: var(--color-white, #FFFFFF);
  line-height: var(--line-height-heading, 1.3);
  letter-spacing: 0.01em;
}
.faq-item-arrow {
  flex-shrink: 0;
  color: var(--color-accent, #F5C518);
  transition: transform var(--faq-transition);
}
.faq-item[open] .faq-item-arrow {
  transform: rotate(180deg);
}
.faq-item-answer {
  padding: 0 1.25rem 1.25rem;
  color: var(--color-gray, #B0B8C4);
  font-size: var(--text-body, 1rem);
  line-height: var(--line-height-body, 1.7);
  border-top: 1px solid var(--color-border, #2D3A4A);
  margin-top: 0;
  animation: faqFadeIn 0.35s ease-out;
}
.faq-item-answer p {
  margin: 0.75rem 0 0;
}
.faq-item-answer p:first-child {
  margin-top: 0;
}
.faq-item-answer a {
  color: var(--color-accent, #F5C518);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--faq-transition);
}
.faq-item-answer a:hover {
  opacity: 0.8;
}

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

/* ---------- Footnote ---------- */
.faq-footnote {
  padding: 1.5rem 1.25rem;
  text-align: center;
  border-radius: var(--faq-radius);
  border: 1px solid var(--color-border, #2D3A4A);
  background: var(--color-card, #1A2332);
}
.faq-footnote p {
  margin: 0;
  color: var(--color-gray, #B0B8C4);
  font-size: var(--text-body, 1rem);
}
.faq-footnote a {
  color: var(--color-accent, #F5C518);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--faq-transition);
}
.faq-footnote a:hover {
  opacity: 0.8;
}

/* =====================================================
   Desktop (min-width: 768px)
   ===================================================== */
@media (min-width: 768px) {
  .page-faq {
    padding: 2rem 2rem 4rem;
    gap: 2.5rem;
  }
  .faq-hero {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1.5rem;
  }
  .faq-breadcrumb {
    flex: 0 0 100%;
    margin-bottom: 0;
  }
  .faq-title {
    flex: 1 1 auto;
    font-size: 2.75rem;
  }
  .faq-search-wrap {
    flex: 0 0 18rem;
    max-width: 20rem;
  }
  .faq-hero-img {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .faq-section {
    flex-direction: row;
    gap: 2rem;
    padding: 1.5rem 2rem;
  }
  .faq-section-header {
    flex: 0 0 11rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding-top: 0.25rem;
  }
  .faq-section-icon {
    width: 48px;
    height: 48px;
  }
  .faq-section-title {
    font-size: var(--text-h3, 1.75rem);
  }
  .faq-section-body {
    flex: 1;
    gap: 0.875rem;
  }

  .faq-item-summary {
    padding: 1.1rem 1.5rem;
  }
  .faq-item-question {
    font-size: 1.05rem;
  }
  .faq-item-answer {
    padding: 0 1.5rem 1.5rem;
  }

  .faq-footnote {
    padding: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding: 3rem 3rem 5rem;
  }
  .faq-title {
    font-size: var(--text-h1, 3rem);
  }
  .faq-section-header {
    flex-basis: 13rem;
  }
  .faq-section-icon {
    width: 56px;
    height: 56px;
  }
}