.page-faq {
  --bay-gap: clamp(24px, 4vw, 42px);
  --faq-radius: var(--r-xl);
  background:
    radial-gradient(90% 55% at 85% 0%, rgba(123, 92, 255, 0.16), transparent 62%),
    radial-gradient(70% 45% at 8% 28%, rgba(41, 216, 232, 0.07), transparent 60%),
    var(--ink);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(24px, 5vw, 48px) 0 clamp(34px, 6vw, 68px);
  border-bottom: 1px solid var(--orbit);
}

.page-faq .faq-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(7, 10, 20, 0.4) 0%, rgba(7, 10, 20, 0.88) 62%, var(--ink) 100%);
}

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

.page-faq .hero-top {
  display: grid;
  gap: 26px;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .title-xl {
  margin: 12px 0 16px;
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-faq .lede {
  max-width: 60ch;
  margin: 0;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.95;
  color: var(--text-soft);
}

.page-faq .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--orbit);
  border: 1px solid var(--orbit);
  border-radius: var(--r-lg);
  overflow: hidden;
  align-self: start;
}

.page-faq .stat {
  padding: 14px 16px;
  background: rgba(16, 23, 40, 0.9);
}

.page-faq .stat-wide {
  grid-column: span 2;
}

.page-faq .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .stat-label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  color: var(--text-dim);
}

.page-faq .hero-anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-faq .anchor-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--orbit);
  background: rgba(16, 23, 40, 0.72);
  color: var(--text-soft);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .anchor-chip:hover,
.page-faq .anchor-chip:focus-visible {
  border-color: var(--cyan);
  color: var(--text);
  transform: translateY(-2px);
}

.page-faq .anchor-chip .mono {
  font-size: 12px;
  color: var(--nebula);
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 34px;
  padding: clamp(34px, 6vw, 72px) 0 clamp(40px, 7vw, 84px);
}

.page-faq .side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

.page-faq .side-nav {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

.page-faq .side-nav::-webkit-scrollbar {
  display: none;
}

.page-faq .side-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid var(--orbit);
  color: var(--text-soft);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .side-link-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--nebula);
}

.page-faq .side-link:hover,
.page-faq .side-link:focus-visible {
  border-color: var(--cyan);
  color: var(--text);
}

.page-faq .side-link.is-current {
  border-color: var(--flame);
  color: var(--text);
}

.page-faq .sidenote--vertical {
  display: none;
}

/* ---------- 舱体 ---------- */
.page-faq .faq-bays {
  display: flex;
  flex-direction: column;
  gap: var(--bay-gap);
  min-width: 0;
}

.page-faq .bay {
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--orbit);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(16, 23, 40, 0.95), rgba(11, 17, 32, 0.96));
  box-shadow: 0 24px 44px -34px rgba(0, 0, 0, 0.95);
}

.page-faq .bay:not(:last-child)::after {
  content: "";
  position: absolute;
  left: clamp(24px, 4vw, 46px);
  bottom: calc(-1 * var(--bay-gap));
  width: 1px;
  height: var(--bay-gap);
  background: linear-gradient(var(--bay-hue, var(--nebula)), rgba(30, 39, 64, 0.2));
}

.page-faq .bay-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 18px;
}

.page-faq .bay-num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--bay-hue, var(--nebula));
  text-shadow: 0 0 26px rgba(123, 92, 255, 0.35);
}

.page-faq .bay-title {
  margin: 0 0 6px;
  font-size: clamp(19px, 2.3vw, 26px);
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-faq .bay-desc {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-soft);
}

/* ---------- 折叠问答 ---------- */
.page-faq .q-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .q-list--spaced {
  margin-top: 16px;
}

.page-faq .q {
  border: 1px solid var(--orbit);
  border-radius: var(--r-lg);
  background: rgba(7, 10, 20, 0.55);
  transition: border-color 0.28s var(--ease), background 0.28s var(--ease);
}

.page-faq .q[open] {
  border-color: var(--cyan);
  background: rgba(11, 17, 32, 0.92);
}

.page-faq .q > summary {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 15px 18px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .q > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--r-lg);
}

.page-faq .q-mark {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--orbit);
  border-radius: 50%;
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-faq .q-mark::before,
.page-faq .q-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--text-soft);
  transform: translate(-50%, -50%);
  transition: background 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-faq .q-mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .q[open] .q-mark {
  border-color: var(--cyan);
  transform: rotate(180deg);
}

.page-faq .q[open] .q-mark::before,
.page-faq .q[open] .q-mark::after {
  background: var(--cyan);
}

.page-faq .q[open] .q-mark::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .q-body {
  margin: 0;
  padding: 0 18px 18px 54px;
  font-size: 14.8px;
  line-height: 1.95;
  color: var(--text-soft);
}

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

/* ---------- 三步路径 ---------- */
.page-faq .route-steps {
  display: grid;
  gap: 12px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .route-node {
  position: relative;
  padding: 16px 18px;
  border: 1px solid var(--orbit);
  border-radius: var(--r-lg);
  background: rgba(16, 23, 40, 0.72);
}

.page-faq .rt-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .route-node b {
  display: block;
  margin: 7px 0 4px;
  font-size: 16px;
  color: var(--text);
}

.page-faq .route-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .route-figure {
  margin: 0 0 24px;
}

.page-faq .figure-media {
  overflow: hidden;
  border: 1px solid var(--orbit);
  border-radius: var(--r-lg);
  background: rgba(16, 23, 40, 0.8);
}

.page-faq .figure-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .figure-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 支持渠道 ---------- */
.page-faq .support-grid {
  display: grid;
  gap: 12px;
}

.page-faq .support-card {
  padding: 16px 18px;
  border: 1px solid var(--orbit);
  border-radius: var(--r-lg);
  background: rgba(16, 23, 40, 0.72);
}

.page-faq .support-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.page-faq .support-value {
  display: block;
  margin-top: 8px;
  font-size: 15.5px;
  color: var(--text);
  word-break: break-word;
}

.page-faq .support-note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--text-soft);
}

/* ---------- 尾部行动区 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 20px;
  margin-bottom: clamp(48px, 8vw, 88px);
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--orbit);
  border-radius: var(--faq-radius);
  background: linear-gradient(120deg, rgba(123, 92, 255, 0.22), rgba(41, 216, 232, 0.12) 55%, rgba(255, 107, 44, 0.16));
}

.page-faq .cta-title {
  margin: 0 0 8px;
  font-size: clamp(20px, 2.6vw, 27px);
  color: var(--text);
}

.page-faq .cta-text {
  max-width: 60ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.95;
  color: var(--text-soft);
}

.page-faq .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .back-to-top {
  margin: 0 auto;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .stat-wide {
    grid-column: span 4;
  }

  .page-faq .route-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .route-node:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -13px;
    top: 50%;
    width: 14px;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), rgba(41, 216, 232, 0));
  }

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

@media (min-width: 1000px) {
  .page-faq .hero-top {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 1fr);
    gap: 56px;
    align-items: end;
  }

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

  .page-faq .stat-wide {
    grid-column: span 2;
  }

  .page-faq .faq-body {
    grid-template-columns: 222px minmax(0, 1fr);
    gap: 58px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 108px;
  }

  .page-faq .side-nav {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .side-link {
    border: 0;
    border-left: 2px solid var(--orbit);
    border-radius: 0;
    padding: 10px 12px;
    white-space: normal;
    line-height: 1.6;
  }

  .page-faq .side-link.is-current {
    border-left-color: var(--flame);
    background: rgba(255, 107, 44, 0.08);
  }

  .page-faq .sidenote--vertical {
    display: block;
    margin-top: 26px;
    padding-left: 12px;
    border-left: 1px solid var(--orbit);
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.9;
    color: var(--text-dim);
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 1180px) {
  .page-faq .bay-head {
    gap: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .anchor-chip,
  .page-faq .side-link,
  .page-faq .q,
  .page-faq .q-mark,
  .page-faq .q-mark::before,
  .page-faq .q-mark::after {
    transition: none;
  }

  .page-faq .anchor-chip:hover,
  .page-faq .anchor-chip:focus-visible {
    transform: none;
  }
}

.page-faq {
  --bay-hue: transparent;
}