.page-faq {
  --faq-bg-card: var(--color-secondary);
  --faq-border-card: var(--border-thick);
  --faq-shadow-card: var(--shadow-heavy);
  --faq-accordion-transition: 0.3s ease;
  --faq-icon-color: var(--color-electric);
  --faq-hero-overlay: rgba(10, 31, 63, 0.65);
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--color-text);
  background-color: var(--color-primary);
}

/* ===== 顶部英雄区 ===== */
.page-faq .faq-hero {
  position: relative;
  width: 100%;
  background-color: var(--color-primary);
  border-bottom: var(--border-medium);
}

.page-faq .faq-hero-inner {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 1.5rem;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.page-faq .breadcrumb-link {
  color: var(--color-electric);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus {
  color: var(--color-accent);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.page-faq .breadcrumb-sep {
  color: var(--color-text-muted);
  user-select: none;
}

.page-faq .breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}

.page-faq .faq-hero-title {
  font-size: 2.8rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin: 0 0 0.75rem 0;
  line-height: 1.15;
  text-transform: uppercase;
  max-width: 10ch;
}

.page-faq .faq-hero-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 0 1.5rem 0;
  line-height: 1.6;
}

.page-faq .faq-hero-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
  border: var(--border-thick);
  box-shadow: var(--shadow-heavy);
  border-radius: 0;
}

/* ===== 主体布局 ===== */
.page-faq .faq-body {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* ===== 问题列表主区域 ===== */
.page-faq .faq-main {
  flex: 1 1 auto;
}

.page-faq .faq-section {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid rgba(212, 168, 67, 0.25);
  padding-bottom: 2rem;
}

.page-faq .faq-section:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-section-title {
  font-size: 1.65rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-accent);
  margin: 0 0 1.25rem 0;
  letter-spacing: 0.02em;
  position: relative;
  padding-left: 1rem;
  border-left: 4px solid var(--color-electric);
}

/* ===== 手风琴项 ===== */
.page-faq .faq-item {
  display: block;
  margin-bottom: 0.75rem;
  background-color: var(--faq-bg-card);
  border: var(--border-medium);
  box-shadow: var(--shadow-light);
  transition: box-shadow var(--faq-accordion-transition), border-color var(--faq-accordion-transition);
}

.page-faq .faq-item:hover {
  border-color: var(--color-electric);
  box-shadow: var(--shadow-heavy);
}

.page-faq .faq-item[open] {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-heavy);
}

.page-faq .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  font-size: 1.05rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
  list-style: none;
  background-color: transparent;
  transition: color var(--transition-fast);
  position: relative;
}

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

.page-faq .faq-question::marker {
  display: none;
  content: "";
}

.page-faq .faq-question::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  color: var(--faq-icon-color);
  transition: transform var(--faq-accordion-transition), color var(--transition-fast);
  font-family: var(--font-mono);
}

.page-faq .faq-item[open] .faq-question::after {
  content: "−";
  transform: rotate(0deg);
}

.page-faq .faq-question:hover,
.page-faq .faq-question:focus {
  color: var(--color-electric);
}

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

.page-faq .faq-answer {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(212, 168, 67, 0.2);
  margin-top: 0;
}

.page-faq .faq-answer p {
  margin: 0.75rem 0 0;
}

.page-faq .faq-answer p:first-child {
  margin-top: 0;
}

.page-faq .faq-link {
  color: var(--color-electric);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus {
  color: var(--color-accent);
  outline: none;
  text-decoration-color: var(--color-accent);
}

/* ===== 侧边联系卡片 ===== */
.page-faq .faq-sidebar {
  flex: 0 0 auto;
  width: 100%;
}

.page-faq .faq-contact-card.card {
  background-color: var(--faq-bg-card);
  border: var(--faq-border-card);
  box-shadow: var(--faq-shadow-card);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
  border-radius: 0;
}

.page-faq .faq-contact-img {
  display: block;
  width: 100%;
  max-width: 200px;
  height: auto;
  object-fit: contain;
  border: 2px solid var(--color-accent);
  margin-bottom: 0.25rem;
}

.page-faq .faq-contact-title {
  font-size: 1.35rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-accent);
  margin: 0 0 0.25rem 0;
  letter-spacing: 0.02em;
}

.page-faq .faq-contact-item {
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .faq-contact-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0.25rem 0 0;
  line-height: 1.5;
  padding: 0.5rem 0.75rem;
  background-color: rgba(0, 212, 255, 0.08);
  border-left: 3px solid var(--color-electric);
}

.page-faq .faq-contact-btn {
  margin-top: 0.5rem;
  align-self: flex-start;
}

.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: "Noto Sans SC", sans-serif;
  text-decoration: none;
  border: var(--border-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  box-shadow: var(--shadow-light);
  border-radius: 0;
}

.page-faq .btn-primary {
  background-color: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.page-faq .btn-primary:hover,
.page-faq .btn-primary:focus {
  background-color: transparent;
  color: var(--color-accent);
  box-shadow: var(--shadow-heavy);
}

.page-faq .btn-secondary {
  background-color: transparent;
  color: var(--color-electric);
  border-color: var(--color-electric);
}

.page-faq .btn-secondary:hover,
.page-faq .btn-secondary:focus {
  background-color: var(--color-electric);
  color: var(--color-primary);
  box-shadow: var(--shadow-heavy);
}

.page-faq .btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ===== 底部区域 ===== */
.page-faq .faq-bottom {
  background-color: var(--color-secondary);
  border-top: var(--border-medium);
  padding: 2.5rem 1.5rem;
}

.page-faq .faq-bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.page-faq .faq-bottom-text {
  font-size: 1.2rem;
  color: var(--color-text);
  margin: 0;
  font-weight: 600;
}

.page-faq .faq-bottom-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero-title {
    font-size: 3.4rem;
  }

  .page-faq .faq-hero-desc {
    font-size: 1.1rem;
  }

  .page-faq .faq-section-title {
    font-size: 1.85rem;
  }

  .page-faq .faq-question {
    font-size: 1.1rem;
    padding: 1.15rem 1.5rem;
  }

  .page-faq .faq-answer {
    padding: 0 1.5rem 1.5rem;
    font-size: 1rem;
  }

  .page-faq .faq-contact-card.card {
    padding: 2rem 1.75rem;
  }
}

/* ===== 桌面端 ≥1024px 两列布局 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-hero-inner {
    padding: 3rem 2rem 2rem;
  }

  .page-faq .faq-hero-title {
    font-size: 4rem;
  }

  .page-faq .faq-body {
    padding: 3rem 2rem 4rem;
  }

  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 3rem;
  }

  .page-faq .faq-main {
    flex: 1 1 66%;
    min-width: 0;
  }

  .page-faq .faq-sidebar {
    flex: 0 0 30%;
    max-width: 340px;
    position: sticky;
    top: 2rem;
  }

  .page-faq .faq-contact-card.card {
    padding: 2rem 1.75rem;
  }

  .page-faq .faq-section {
    margin-bottom: 3rem;
    padding-bottom: 2.5rem;
  }

  .page-faq .faq-bottom {
    padding: 3rem 2rem;
  }

  .page-faq .faq-bottom-text {
    font-size: 1.35rem;
  }
}

/* ===== 大屏 ≥1400px ===== */
@media (min-width: 1400px) {
  .page-faq .faq-hero-inner {
    padding: 4rem 2rem 2.5rem;
  }

  .page-faq .faq-hero-title {
    font-size: 4.5rem;
  }

  .page-faq .faq-body {
    padding: 4rem 2rem 5rem;
  }

  .page-faq .faq-layout {
    gap: 4rem;
  }

  .page-faq .faq-sidebar {
    flex: 0 0 28%;
  }
}

/* ===== 打印样式 ===== */
@media print {
  .page-faq .faq-hero {
    border-bottom: 2px solid #000;
  }

  .page-faq .faq-hero-title {
    color: #000;
  }

  .page-faq .faq-item {
    break-inside: avoid;
    border: 1px solid #ccc;
    box-shadow: none;
  }

  .page-faq .faq-question::after {
    content: "▼";
    color: #666;
  }

  .page-faq .faq-item[open] .faq-question::after {
    content: "▲";
  }

  .page-faq .faq-contact-card.card {
    border: 2px solid #000;
    box-shadow: none;
  }

  .page-faq .btn {
    border: 1px solid #000;
    box-shadow: none;
    color: #000;
    background: transparent;
  }
}