.page-faq {
  --catbar-top: 64px;
  --anchor-offset: 136px;
  background: var(--bg-deep);
  color: var(--cyan);
  font-family: var(--font-body);
  line-height: 1.75;
}

/* ===== 页首 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(96px, 12vw, 152px) 0 64px;
  background:
    linear-gradient(180deg, rgba(8, 22, 32, 0.92) 0%, rgba(11, 27, 43, 0.7) 55%, var(--bg-deep) 100%),
    var(--bg-deep);
}

.page-faq .faq-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  z-index: 0;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  z-index: 1;
  background: linear-gradient(90deg, transparent, var(--green), var(--violet), var(--orange), transparent);
  background-size: 220% 100%;
  animation: faq-flow 5s linear infinite;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 2;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.page-faq .breadcrumb a {
  color: var(--gray);
  text-decoration: none;
  transition: color 0.2s;
}

.page-faq .breadcrumb a:hover {
  color: var(--green);
}

.page-faq .breadcrumb-sep {
  color: var(--gray);
  opacity: 0.5;
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

.page-faq .faq-eyebrow {
  margin: 32px 0 14px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  max-width: 920px;
  font-family: var(--font-head);
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1.16;
  color: #ffffff;
}

.page-faq .faq-lead {
  margin: 0 0 28px;
  max-width: 760px;
  font-size: 15px;
  color: var(--gray);
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===== 吸顶分类栏 ===== */
.page-faq .faq-catbar {
  position: sticky;
  top: var(--catbar-top);
  z-index: 60;
  background: rgba(8, 22, 32, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-catbar-inner {
  display: flex;
  gap: 6px;
  max-width: calc(100% - 32px);
  margin-inline: auto;
  padding: 12px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-catbar-inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-cat-link {
  flex-shrink: 0;
  padding: 8px 18px;
  border-radius: 999px;
  border-bottom: 2px solid transparent;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray);
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.page-faq .faq-cat-link:hover {
  color: var(--green);
  border-bottom-color: var(--green);
  background: rgba(0, 255, 136, 0.06);
}

.page-faq .faq-cat-link:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
  color: #ffffff;
}

/* ===== 章节通用 ===== */
.page-faq .faq-body {
  border-top: 1px solid transparent;
}

.page-faq .faq-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
  background: var(--bg-deep);
  scroll-margin-top: var(--anchor-offset);
}

.page-faq .faq-section--alt {
  background: var(--bg-lift);
}

.page-faq .faq-section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 34px;
}

.page-faq .faq-sn {
  flex-shrink: 0;
  margin-top: 4px;
  padding: 6px 10px;
  border: 1px solid rgba(0, 255, 136, 0.4);
  border-radius: 8px;
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1;
  color: var(--green);
}

.page-faq .faq-section-head h2 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.2;
  color: #ffffff;
}

.page-faq .faq-section-head p {
  margin: 0;
  font-size: 14px;
  color: var(--gray);
}

/* ===== 费用面板 ===== */
.page-faq .fee-hero-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-bottom: 28px;
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid rgba(0, 255, 136, 0.22);
  background:
    linear-gradient(135deg, rgba(0, 255, 136, 0.08), rgba(90, 92, 255, 0.04)),
    var(--glass);
}

.page-faq .fee-metric {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .fee-zero {
  font-family: var(--font-data);
  font-size: clamp(64px, 10vw, 96px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  text-shadow: 0 0 28px rgba(0, 255, 136, 0.35);
}

.page-faq .fee-unit {
  font-family: var(--font-data);
  font-size: 20px;
  color: var(--cyan);
}

.page-faq .fee-headline {
  margin: 0 0 10px;
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700;
  color: #ffffff;
}

.page-faq .fee-sub {
  margin: 0 0 16px;
  max-width: 620px;
  font-size: 15px;
  color: var(--gray);
}

.page-faq .faq-inline-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 255, 136, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.page-faq .faq-inline-link:hover {
  color: #ffffff;
  border-color: var(--green);
}

/* ===== 覆盖范围数据条 ===== */
.page-faq .coverage-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 28px;
}

.page-faq .coverage-cell {
  padding: 18px 10px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--glass);
  text-align: center;
}

.page-faq .coverage-num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
}

.page-faq .coverage-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--gray);
}

/* ===== 苹果版提示 ===== */
.page-faq .apple-note {
  margin-bottom: 28px;
  padding: 22px 24px;
  border-radius: var(--radius);
  border-left: 3px solid var(--violet);
  background:
    linear-gradient(120deg, rgba(90, 92, 255, 0.12), rgba(0, 255, 136, 0.03)),
    var(--glass);
}

.page-faq .apple-note-label {
  margin: 0 0 8px;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--violet);
}

.page-faq .apple-note p:last-child {
  margin: 0;
  font-size: 15px;
  color: var(--cyan);
}

/* ===== 路径对比 ===== */
.page-faq .route-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.page-faq .route-diagram {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-lift);
}

.page-faq .route-cards {
  display: grid;
  gap: 14px;
}

.page-faq .route-card {
  padding: 22px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--glass);
}

.page-faq .route-card--top {
  border-left: 3px solid var(--green);
}

.page-faq .route-card--side {
  border-left: 3px solid var(--orange);
}

.page-faq .route-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 600;
  color: var(--green);
  background: rgba(0, 255, 136, 0.08);
}

.page-faq .route-card--side .route-tag {
  color: var(--orange);
  background: rgba(255, 122, 0, 0.08);
}

.page-faq .route-card h3 {
  margin: 12px 0 6px;
  font-size: 17px;
  color: #ffffff;
}

.page-faq .route-card p {
  margin: 0;
  font-size: 14px;
  color: var(--gray);
}

/* ===== 问答列表 ===== */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s;
}

.page-faq .faq-item:hover {
  border-color: rgba(138, 155, 171, 0.3);
}

.page-faq .faq-item[open] {
  border-color: rgba(0, 255, 136, 0.28);
  background:
    linear-gradient(90deg, rgba(0, 255, 136, 0.045), transparent 46%),
    rgba(255, 255, 255, 0.02);
  box-shadow: 0 0 28px rgba(0, 255, 136, 0.05);
}

.page-faq .faq-item[open]::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 14px;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 42%, rgba(0, 255, 136, 0.08) 50%, transparent 58%);
  background-size: 220% 100%;
  animation: faq-scan 2.8s ease-in-out infinite;
}

.page-faq .faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
  transition: color 0.2s;
}

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

.page-faq .faq-item summary:hover {
  color: #ffffff;
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: -2px;
  border-radius: 14px;
}

.page-faq .faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(0, 255, 136, 0.35);
  background: rgba(0, 255, 136, 0.06);
  font-family: var(--font-data);
  font-size: 18px;
  line-height: 1;
  color: var(--green);
  transition: transform 0.25s, background 0.25s, color 0.25s;
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
  background: var(--green);
  color: var(--bg-deep);
}

.page-faq .faq-answer {
  padding: 0 22px 20px;
  font-size: 15px;
  color: var(--gray);
}

.page-faq .faq-item[open] .faq-answer {
  position: relative;
  padding-top: 4px;
}

.page-faq .faq-item[open] .faq-answer::before {
  content: "";
  display: block;
  width: 36px;
  height: 2px;
  margin-bottom: 12px;
  border-radius: 2px;
  background: var(--green);
}

.page-faq .faq-answer a {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.page-faq .faq-answer a:hover {
  color: #ffffff;
}

/* ===== 联系 CTA ===== */
.page-faq .faq-contact-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  margin-top: 36px;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 122, 0, 0.25);
  background:
    linear-gradient(120deg, rgba(255, 122, 0, 0.12), rgba(90, 92, 255, 0.05)),
    var(--glass);
}

.page-faq .faq-cta-text {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.page-faq .faq-cta-btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  background: var(--orange);
  font-size: 15px;
  font-weight: 700;
  color: #04121a;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.page-faq .faq-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 122, 0, 0.25);
}

/* ===== 动画 ===== */
@keyframes faq-scan {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

@keyframes faq-flow {
  0% {
    background-position: 0% 0;
  }
  100% {
    background-position: -220% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero::after,
  .page-faq .faq-item[open]::before {
    animation: none;
  }

  .page-faq .faq-item[open]::before {
    background: linear-gradient(90deg, rgba(0, 255, 136, 0.05), transparent 50%);
  }
}

/* ===== 平板以上 ===== */
@media (min-width: 720px) {
  .page-faq .fee-hero-panel {
    grid-template-columns: 180px 1fr;
    gap: 32px;
    padding: 36px;
  }

  .page-faq .fee-metric {
    align-self: center;
    flex-direction: column;
    gap: 4px;
    border-right: 1px solid var(--line);
    padding-right: 28px;
  }

  .page-faq .route-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

/* ===== 桌面 ===== */
@media (min-width: 900px) {
  .page-faq {
    --catbar-top: 78px;
    --anchor-offset: 148px;
  }

  .page-faq .faq-section {
    padding: 96px 0;
  }

  .page-faq .faq-hero h1 {
    font-size: 50px;
  }

  .page-faq .faq-lead {
    font-size: 16px;
  }

  .page-faq .route-compare {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .page-faq .faq-item summary {
    font-size: 16px;
    padding: 22px 26px;
  }

  .page-faq .faq-answer {
    padding-right: 26px;
    padding-left: 26px;
  }
}