.page-faq {
  --faq-link-gold: #C07C00;
  --faq-gold-glow: 0 0 28px rgba(245, 185, 66, .32);
  --faq-card-radius: 18px;
  --faq-deep-bg: linear-gradient(135deg, #060E1F 0%, #0B1B3A 55%, #1D3A6E 100%);
  background: var(--color-bg);
  color: var(--color-ink);
  overflow-x: hidden;
}

/* ===== 首屏：标题 + 分类标签 ===== */
.page-faq .faq-hero {
  padding: 28px 0 44px;
  background:
    radial-gradient(circle at 85% 20%, rgba(245, 185, 66, .18), transparent 34%),
    linear-gradient(180deg, #FFFFFF 0%, var(--color-bg) 100%);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.8rem, 4.2vw, 3rem);
  line-height: 1.15;
  color: var(--color-space);
  font-style: italic;
  letter-spacing: .01em;
  margin-bottom: 14px;
}

.page-faq .faq-hero-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(26, 26, 46, .78);
  max-width: 62ch;
}

.page-faq .faq-topic-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--color-white);
  border: 1px solid #E6E9F0;
  box-shadow: 0 2px 10px rgba(11, 27, 58, .06);
  color: var(--color-ink);
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.page-faq .faq-tab::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 8px rgba(245, 185, 66, .7);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  background: var(--color-space);
  color: var(--color-white);
  border-color: var(--color-space);
}

.page-faq .faq-hero-visual {
  position: relative;
  isolation: isolate;
}

.page-faq .faq-hero-visual::after {
  content: "";
  position: absolute;
  inset: 14px -10px -10px 14px;
  border: 2px dashed rgba(245, 185, 66, .55);
  border-radius: var(--radius-lg);
  z-index: 0;
}

.page-faq .faq-hero-img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(245, 185, 66, .4);
}

/* ===== 热门问题 ===== */
.page-faq .faq-hot {
  padding: 20px 0 44px;
}

.page-faq .faq-section-head {
  margin-bottom: 28px;
}

.page-faq .faq-section-head h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  line-height: 1.2;
  color: var(--color-space);
  font-style: italic;
  letter-spacing: .01em;
}

.page-faq .faq-section-head h2::after {
  content: "";
  display: block;
  width: 46px;
  height: 4px;
  margin-top: 10px;
  border-radius: 4px;
  background: var(--gradient-gold);
}

.page-faq .faq-section-head p {
  margin-top: 12px;
  max-width: 640px;
  color: rgba(26, 26, 46, .72);
  line-height: 1.7;
  font-size: .98rem;
}

.page-faq .faq-hot-grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-hot-card {
  background: var(--color-white);
  border-radius: var(--faq-card-radius);
  padding: 22px 22px 18px;
  box-shadow: var(--shadow-card);
  border-top: 3px solid var(--color-gold);
  transition: box-shadow var(--transition), transform var(--transition);
}

.page-faq .faq-hot-card:hover {
  box-shadow: var(--shadow-gold);
  transform: translateY(-4px);
}

.page-faq .faq-hot-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(245, 185, 66, .16);
  color: var(--color-space);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .95rem;
  margin-bottom: 12px;
}

.page-faq .faq-hot-card h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-space);
  margin-bottom: 8px;
  line-height: 1.4;
}

.page-faq .faq-hot-answer {
  font-size: .94rem;
  line-height: 1.7;
  color: rgba(26, 26, 46, .76);
  margin-bottom: 12px;
}

.page-faq .faq-hot-link {
  font-weight: 600;
  font-size: .9rem;
  color: var(--faq-link-gold);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.page-faq .faq-hot-link::after {
  content: "→";
}

.page-faq .faq-hot-link:hover {
  gap: 8px;
}

/* ===== 排查表 V4.2 使用指南 ===== */
.page-faq .faq-guide {
  background: var(--faq-deep-bg);
  padding: 52px 0 56px;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-guide::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  left: -140px;
  top: -140px;
  background: radial-gradient(circle, rgba(245, 185, 66, .2), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-guide::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  right: -80px;
  bottom: -80px;
  background: radial-gradient(circle, rgba(230, 233, 240, .12), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-guide-layout {
  display: grid;
  gap: 30px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-guide-copy h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-style: italic;
  color: var(--color-white);
  margin-bottom: 10px;
}

.page-faq .faq-guide-copy h2::after {
  content: "";
  display: block;
  width: 46px;
  height: 4px;
  margin-top: 10px;
  border-radius: 4px;
  background: var(--gradient-gold);
}

.page-faq .faq-guide-lead {
  color: rgba(230, 233, 240, .88);
  line-height: 1.75;
  margin: 16px 0 24px;
  font-size: .98rem;
}

.page-faq .faq-guide-steps {
  counter-reset: faq-step;
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
}

.page-faq .faq-guide-step {
  position: relative;
  padding: 0 0 20px 50px;
}

.page-faq .faq-guide-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-guide-step::before {
  counter-increment: faq-step;
  content: counter(faq-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-gold);
  color: var(--color-space);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--color-space);
  box-shadow: 0 0 0 2px rgba(245, 185, 66, .6);
}

.page-faq .faq-guide-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: -4px;
  width: 2px;
  background: rgba(245, 185, 66, .4);
}

.page-faq .faq-guide-step h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--color-white);
  margin-bottom: 4px;
}

.page-faq .faq-guide-step p {
  color: rgba(230, 233, 240, .78);
  font-size: .92rem;
  line-height: 1.7;
  margin: 0;
}

.page-faq .faq-guide-visual {
  position: relative;
  isolation: isolate;
}

.page-faq .faq-guide-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(245, 185, 66, .35);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-guide-caption {
  margin-top: 12px;
  font-size: .85rem;
  color: rgba(230, 233, 240, .7);
  text-align: center;
}

/* ===== 按场景详细解答 ===== */
.page-faq .faq-details {
  padding: 48px 0 56px;
}

.page-faq .faq-details-layout {
  display: grid;
  gap: 28px;
}

.page-faq .faq-category {
  margin-bottom: 34px;
  scroll-margin-top: 20px;
}

.page-faq .faq-category + .faq-category {
  margin-top: 6px;
  padding-top: 30px;
  border-top: 1px dashed #E6E9F0;
}

.page-faq .faq-category-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-space);
  margin-bottom: 14px;
  padding-left: 14px;
  border-left: 4px solid var(--color-gold);
  font-style: italic;
}

/* 手风琴 */
.page-faq .faq-detail {
  background: var(--color-white);
  border: 1px solid #E6E9F0;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
  scroll-margin-top: 20px;
}

.page-faq .faq-detail[open] {
  border-color: var(--color-gold);
  box-shadow: var(--faq-gold-glow);
}

.page-faq .faq-summary {
  cursor: pointer;
  list-style: none;
  padding: 17px 48px 17px 18px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-space);
  position: relative;
  transition: background var(--transition);
}

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

.page-faq .faq-summary::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
  margin-right: 10px;
  vertical-align: middle;
  box-shadow: 0 0 8px rgba(245, 185, 66, .7);
}

.page-faq .faq-summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--color-gold);
  transition: transform var(--transition);
}

.page-faq .faq-detail[open] > .faq-summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.page-faq .faq-summary:hover {
  background: rgba(245, 185, 66, .07);
}

.page-faq .faq-answer {
  padding: 0 18px 18px;
  border-top: 1px dashed #E6E9F0;
}

.page-faq .faq-answer-block {
  margin-top: 14px;
  padding: 12px 14px;
  background: #F8FAFE;
  border-left: 3px solid var(--color-gold);
  border-radius: 4px 12px 12px 4px;
}

.page-faq .faq-answer-block h4 {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  margin: 0 0 6px;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  background: rgba(245, 185, 66, .16);
  color: var(--color-space);
  letter-spacing: .04em;
}

.page-faq .faq-answer-block p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.7;
  color: rgba(26, 26, 46, .82);
}

.page-faq .faq-steps {
  margin: 6px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 5px;
}

.page-faq .faq-steps li {
  font-size: .93rem;
  line-height: 1.65;
  color: rgba(26, 26, 46, .82);
}

.page-faq .faq-steps li::marker {
  color: var(--color-gold);
  font-weight: 700;
}

.page-faq .faq-code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .88em;
  padding: .1em .36em;
  border-radius: 6px;
  background: rgba(11, 27, 58, .08);
  color: var(--color-space);
}

/* 问题索引（桌面端） */
.page-faq .faq-index {
  display: none;
}

.page-faq .faq-index-title {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-space);
  font-size: 1.1rem;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-gold);
}

.page-faq .faq-index-nav {
  display: grid;
  gap: 2px;
}

.page-faq .faq-index-link {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: rgba(26, 26, 46, .78);
  font-size: .9rem;
  line-height: 1.45;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), padding-left var(--transition);
}

.page-faq .faq-index-link:hover {
  background: rgba(245, 185, 66, .14);
  color: var(--color-space);
  padding-left: 14px;
}

/* ===== 底部 CTA ===== */
.page-faq .faq-cta {
  padding: 40px 0;
  background: linear-gradient(120deg, #0B1B3A 0%, #1D3A6E 100%);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 50%, rgba(245, 185, 66, .2), transparent 50%);
}

.page-faq .faq-cta-inner {
  position: relative;
  display: grid;
  gap: 18px;
  align-items: center;
}

.page-faq .faq-cta-copy h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  color: var(--color-white);
  font-style: italic;
  margin-bottom: 6px;
}

.page-faq .faq-cta-copy p {
  color: rgba(230, 233, 240, .82);
  line-height: 1.7;
  font-size: .95rem;
  margin: 0;
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-cta-actions .btn-ghost {
  border-color: rgba(230, 233, 240, .5);
  color: var(--color-white);
}

.page-faq .faq-cta-actions .btn-ghost:hover {
  background: rgba(230, 233, 240, .12);
  border-color: var(--color-white);
}

/* ===== 响应式：平板与桌面 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 40px 0 56px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }

  .page-faq .faq-hot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-guide-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }

  .page-faq .faq-cta-inner {
    grid-template-columns: 1fr auto;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-details-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 20px;
    background: var(--color-white);
    border: 1px solid #E6E9F0;
    border-radius: var(--radius-lg);
    padding: 22px;
    box-shadow: var(--shadow-card);
    max-height: calc(100vh - 40px);
    overflow-y: auto;
  }

  .page-faq .faq-category + .faq-category {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
  }
}