.page-faq {
  --faq-gap: 40px;
  --faq-sidebar-cols: 4fr;
  --faq-main-cols: 8fr;
  background: var(--deep-space);
  color: var(--text-light);
  font-family: var(--font-body);
  line-height: 1.7;
  padding-bottom: 96px;
  overflow-x: hidden;
}

.page-faq .container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==== Hero ==== */
.page-faq .faq-hero {
  position: relative;
  padding: 56px 0 48px;
  text-align: center;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: '';
  position: absolute;
  top: -140px;
  right: -110px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 94, 58, 0.28), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -80px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  justify-content: center;
  margin-bottom: 28px;
}

.page-faq .faq-hero .section-eyebrow {
  color: var(--vibrant-orange);
  margin-bottom: 14px;
}

.page-faq .faq-hero h1 {
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(28px, 4.6vw, 46px);
  line-height: 1.2;
  margin: 0 auto 20px;
  max-width: 900px;
}

.page-faq .faq-hero-lead {
  color: var(--text-light);
  font-size: 16px;
  line-height: 1.8;
  max-width: 860px;
  margin: 0 auto;
  opacity: 0.88;
}

.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px 48px;
  margin-top: 36px;
}

.page-faq .faq-hero-stat {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(229, 231, 235, 0.62);
  padding-left: 14px;
  border-left: 2px solid var(--vibrant-orange);
}

.page-faq .faq-hero-stat strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 28px;
  color: var(--white);
  line-height: 1.25;
}

/* ==== 分类卡片 ==== */
.page-faq .faq-category-nav {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 24px 0 40px;
}

.page-faq .faq-category-card {
  --cat-accent: var(--electric-blue);
  position: relative;
  display: block;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px 20px 20px;
  color: var(--white);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--cat-accent);
  opacity: 0.85;
}

.page-faq .faq-category-card:hover {
  transform: translateY(-4px);
  border-color: var(--cat-accent);
  background: rgba(255, 255, 255, 0.09);
}

.page-faq .faq-category-card--using {
  --cat-accent: var(--electric-blue);
}

.page-faq .faq-category-card--data {
  --cat-accent: var(--vibrant-orange);
}

.page-faq .faq-category-card--membership {
  --cat-accent: var(--indigo);
}

.page-faq .faq-category-card--contact {
  --cat-accent: var(--fluorescent-pink);
}

.page-faq .faq-cat-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cat-accent);
}

.page-faq .faq-cat-title {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  margin: 10px 0 6px;
}

.page-faq .faq-cat-desc {
  font-size: 13px;
  color: var(--text-light);
  opacity: 0.7;
}

/* ==== FAQ 区块 ==== */
.page-faq .faq-section {
  padding: 56px 0;
}

.page-faq .faq-section-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-sidebar {
  position: relative;
}

.page-faq .faq-sidebar .section-eyebrow {
  color: var(--fluorescent-green);
  margin-bottom: 10px;
}

.page-faq .faq-section--data .faq-sidebar .section-eyebrow {
  color: var(--vibrant-orange);
}

.page-faq .faq-section--membership .faq-sidebar .section-eyebrow {
  color: var(--indigo);
}

.page-faq .faq-section--contact .faq-sidebar .section-eyebrow {
  color: var(--fluorescent-pink);
}

.page-faq .faq-sidebar .section-title {
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(26px, 3.2vw, 34px);
  line-height: 1.25;
  margin: 0 0 12px;
}

.page-faq .faq-section-desc {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.75;
  opacity: 0.8;
  margin: 0;
}

/* ==== 图片框 ==== */
.page-faq .faq-img-frame {
  margin-top: 28px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: linear-gradient(145deg, var(--electric-blue), rgba(30, 58, 138, 0.35));
}

.page-faq .faq-img-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-faq .faq-img-frame figcaption {
  padding: 12px 16px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.72);
  border-top: 1px solid var(--glass-border);
}

/* ==== 手风琴 ==== */
.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-item {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-item[open] {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 94, 58, 0.38);
}

.page-faq .faq-item summary {
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 16px;
  color: var(--white);
  user-select: none;
  transition: background 0.25s var(--ease);
}

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

.page-faq .faq-item summary:hover {
  background: rgba(255, 255, 255, 0.04);
}

.page-faq .faq-q-icon {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--fluorescent-green);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.55);
  margin-top: 7px;
  flex-shrink: 0;
}

.page-faq .faq-section--data .faq-q-icon {
  background: var(--vibrant-orange);
  box-shadow: 0 0 8px rgba(255, 94, 58, 0.5);
}

.page-faq .faq-section--membership .faq-q-icon {
  background: var(--indigo);
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.55);
}

.page-faq .faq-section--contact .faq-q-icon {
  background: var(--fluorescent-pink);
  box-shadow: 0 0 8px rgba(255, 46, 99, 0.5);
}

.page-faq .faq-q-text {
  flex: 1;
}

.page-faq .faq-q-toggle {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  flex-shrink: 0;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-q-toggle::before {
  content: '+';
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
}

.page-faq .faq-item[open] .faq-q-toggle {
  transform: rotate(45deg);
  background: var(--vibrant-orange);
  border-color: var(--vibrant-orange);
}

.page-faq .faq-answer {
  padding: 0 20px 20px 44px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.8;
}

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

/* ==== 数据流 ==== */
.page-faq .data-flow-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .data-flow-step {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-left: 3px solid var(--fluorescent-green);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.page-faq .data-flow-time {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--fluorescent-green);
  line-height: 1.2;
}

.page-faq .data-flow-label {
  display: block;
  font-size: 13px;
  color: var(--text-light);
  opacity: 0.78;
  margin-top: 4px;
}

/* ==== 会员徽章 ==== */
.page-faq .faq-membership-badge {
  margin-top: 28px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(255, 46, 99, 0.14));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px;
}

.page-faq .faq-member-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
}

.page-faq .faq-membership-badge p {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-light);
  opacity: 0.82;
}

/* ==== 联系卡 ==== */
.page-faq .faq-contact-card {
  margin-top: 28px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.16), rgba(255, 46, 99, 0.12));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.page-faq .faq-contact-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.12);
}

.page-faq .faq-contact-row:last-child {
  border-bottom: none;
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(229, 231, 235, 0.6);
  white-space: nowrap;
  padding-top: 2px;
}

.page-faq .faq-contact-value {
  color: var(--white);
  font-weight: 500;
  font-size: 14px;
  text-align: right;
  word-break: break-all;
  max-width: 70%;
}

/* ==== 文末 CTA ==== */
.page-faq .faq-more-cta {
  margin-top: 64px;
  background: linear-gradient(120deg, rgba(255, 94, 58, 0.18), rgba(30, 58, 138, 0.32));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
  text-align: center;
}

.page-faq .faq-more-cta h2 {
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 28px;
  margin: 0 0 8px;
}

.page-faq .faq-more-cta p {
  margin: 0;
  color: var(--text-light);
  opacity: 0.82;
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-more-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ==== 响应式 ==== */
@media (min-width: 768px) {
  .page-faq .faq-category-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-faq .faq-hero {
    padding: 72px 0 56px;
  }

  .page-faq .faq-section {
    padding: 72px 0;
  }

  .page-faq .faq-more-cta {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }

  .page-faq .data-flow-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 992px) {
  .page-faq .faq-category-nav {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .faq-section-layout {
    grid-template-columns: var(--faq-sidebar-cols) var(--faq-main-cols);
    gap: 64px;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: 120px;
    align-self: start;
  }

  .page-faq .faq-more-cta {
    padding: 48px 56px;
  }
}