.page-faq {
  --faq-line: rgba(140, 160, 220, .22);
  --faq-line-strong: rgba(33, 212, 232, .46);
  --faq-card: rgba(21, 28, 58, .72);
  --faq-radius: 24px;
  --faq-rail: 26px;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(28px, 4vw, 56px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -140px -12% auto -12%;
  height: 640px;
  background:
    radial-gradient(closest-side, rgba(107, 77, 255, .26), transparent 72%) 10% 26% / 48% 100% no-repeat,
    radial-gradient(closest-side, rgba(33, 212, 232, .18), transparent 70%) 84% 8% / 44% 92% no-repeat;
  pointer-events: none;
}

.page-faq .faq-hero .ss-shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__body {
  margin-top: clamp(22px, 3.4vw, 44px);
}

.page-faq .faq-h1 {
  font-size: clamp(34px, 6.4vw, 78px);
  line-height: 1.06;
  letter-spacing: -.022em;
  max-width: 15ch;
  margin: 14px 0 0;
}

.page-faq .faq-lede {
  max-width: 62ch;
  margin-top: 20px;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(26px, 3.6vw, 42px);
  padding-bottom: 4px;
}

.page-faq .faq-jump__item {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--glow-cyan);
}

.page-faq .faq-jump__n {
  font-size: 12px;
  opacity: .82;
  letter-spacing: .04em;
}

/* ---------- Section head ---------- */
.page-faq .faq-sec-head {
  max-width: 64ch;
  margin-bottom: clamp(28px, 3.6vw, 48px);
}

.page-faq .faq-sec-head .ss-h2 {
  margin: 10px 0 14px;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index-sec {
  padding-top: clamp(40px, 5vw, 76px);
}

.page-faq .faq-index-grid {
  align-items: start;
  gap: clamp(28px, 4vw, 60px);
}

.page-faq .faq-index-copy .ss-h2 {
  margin: 10px 0 16px;
}

.page-faq .faq-index {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-index__row {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 15px 4px;
  border-bottom: 1px solid var(--faq-line);
  transition: background .2s var(--ease);
}

.page-faq .faq-index__row:hover {
  background: rgba(33, 212, 232, .06);
}

.page-faq .faq-index__no {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan-400);
}

.page-faq .faq-index__link {
  color: var(--ink);
  text-decoration: none;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .01em;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan-400);
}

.page-faq .faq-index__count {
  font-size: 12px;
  color: var(--mist);
  letter-spacing: .08em;
}

.page-faq .faq-index-figure .ss-media {
  border-radius: var(--r-panel);
}

/* ---------- 问题卡片 ---------- */
.page-faq .faq-topic {
  padding-top: clamp(30px, 3.6vw, 48px);
  scroll-margin-top: 96px;
}

.page-faq .faq-topic + .faq-topic {
  margin-top: clamp(22px, 3vw, 40px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-topic__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.page-faq .faq-topic__badge {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--deep-900);
  background: var(--cyan-400);
  border-radius: var(--r-pill);
  padding: 4px 11px;
  font-weight: 700;
}

.page-faq .faq-topic__title {
  margin: 0;
}

.page-faq .faq-topic__tag {
  font-size: 12px;
}

.page-faq .faq-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: var(--faq-card);
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(140, 160, 220, .38);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-line-strong);
  box-shadow: 0 0 0 1px rgba(33, 212, 232, .14), 0 18px 40px -28px rgba(33, 212, 232, .5);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -3px;
  border-radius: var(--faq-radius);
}

.page-faq .faq-q__index {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--nebula-500);
  padding-top: 4px;
  flex: none;
  min-width: 30px;
}

.page-faq .faq-item[open] .faq-q__index {
  color: var(--cyan-400);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .faq-q__mark {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 4px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan-400);
  border-radius: 2px;
  transition: transform .28s var(--ease), opacity .28s var(--ease);
}

.page-faq .faq-q__mark::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-q__mark::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-faq .faq-item[open] .faq-q__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  position: relative;
  padding: 0 22px 22px 66px;
}

.page-faq .faq-a::before {
  content: "";
  position: absolute;
  left: 26px;
  top: -4px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan-400), rgba(33, 212, 232, 0));
  opacity: .6;
}

.page-faq .faq-a > p {
  margin: 0 0 12px;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.75;
  max-width: 68ch;
}

.page-faq .faq-steps {
  margin: 0;
  padding-left: 1.15em;
  display: grid;
  gap: 7px;
  max-width: 68ch;
}

.page-faq .faq-steps li {
  color: var(--ink);
  font-size: 15.5px;
  line-height: 1.7;
}

.page-faq .faq-steps li::marker {
  color: var(--gold-400);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ---------- 自助排查 ---------- */
.page-faq .faq-tree-sec {
  padding-top: clamp(36px, 4.4vw, 64px);
}

.page-faq .faq-tree-panel {
  border-radius: var(--r-panel);
}

.page-faq .faq-tree-grid {
  align-items: start;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .faq-tree-copy .ss-h2 {
  margin: 10px 0 16px;
}

.page-faq .faq-tree {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-node {
  position: relative;
  padding: 20px 20px 20px 62px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-card);
  background: rgba(5, 8, 20, .55);
  transition: border-color .24s var(--ease);
}

.page-faq .faq-node:hover {
  border-color: var(--faq-line-strong);
}

.page-faq .faq-node__no {
  position: absolute;
  left: 20px;
  top: 22px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan-400);
}

.page-faq .faq-node__title {
  margin: 0 0 10px;
}

.page-faq .faq-tree-figure {
  position: sticky;
  top: 96px;
}

.page-faq .faq-tree-figure .ss-media {
  border-radius: var(--r-panel);
}

/* ---------- 教程索引 ---------- */
.page-faq .faq-tut-sec {
  padding-top: clamp(36px, 4.4vw, 64px);
}

.page-faq .faq-tut-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-tut-row {
  display: grid;
  grid-template-columns: 62px 1fr auto;
  align-items: baseline;
  gap: 14px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--faq-line);
  transition: background .2s var(--ease);
}

.page-faq .faq-tut-row:hover {
  background: rgba(107, 77, 255, .07);
}

.page-faq .faq-tut-no {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--nebula-500);
}

.page-faq .faq-tut-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-tut-meta {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-tut-note {
  margin: 24px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 15px;
}

/* ---------- 求助通道 ---------- */
.page-faq .faq-help-sec {
  padding-top: clamp(36px, 4.4vw, 64px);
}

.page-faq .faq-help-panel {
  border-radius: var(--r-panel);
  background:
    radial-gradient(closest-side, rgba(255, 194, 75, .14), transparent 70%) 92% 12% / 42% 82% no-repeat,
    var(--panel-800);
}

.page-faq .faq-help-grid {
  align-items: start;
  gap: clamp(26px, 3.6vw, 52px);
}

.page-faq .faq-help-copy .ss-h2 {
  margin: 10px 0 16px;
}

.page-faq .faq-help-ways {
  display: grid;
  gap: 14px;
}

.page-faq .faq-way {
  padding: 16px 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-card);
  background: rgba(5, 8, 20, .5);
}

.page-faq .faq-way__key {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold-400);
  margin-bottom: 8px;
}

.page-faq .faq-way__val {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  word-break: break-all;
}

.page-faq a.faq-way__val:hover,
.page-faq a.faq-way__val:focus-visible {
  color: var(--cyan-400);
}

.page-faq .faq-way__hint {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-help-links {
  margin: 6px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 15px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1023px) {
  .page-faq .faq-index-grid,
  .page-faq .faq-tree-grid,
  .page-faq .faq-help-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-tree-figure {
    position: static;
    order: -1;
  }

  .page-faq .faq-a {
    padding-left: 22px;
  }

  .page-faq .faq-a::before {
    left: 22px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-h1 {
    max-width: none;
  }

  .page-faq .faq-index__row {
    grid-template-columns: 32px 1fr auto;
    gap: 8px;
  }

  .page-faq .faq-tut-row {
    grid-template-columns: 52px 1fr;
    row-gap: 6px;
  }

  .page-faq .faq-tut-meta {
    grid-column: 2 / -1;
  }

  .page-faq .faq-q {
    padding: 18px 16px;
    gap: 10px;
  }

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

  .page-faq .faq-a {
    padding: 0 16px 20px 16px;
  }

  .page-faq .faq-a::before {
    display: none;
  }

  .page-faq .faq-node {
    padding: 18px 16px 18px 16px;
  }

  .page-faq .faq-node__no {
    position: static;
    display: block;
    margin-bottom: 6px;
  }

  .page-faq .faq-jump__item {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__item,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-item,
  .page-faq .faq-node {
    transition: none;
  }

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