.page-faq {
  --faq-gap-lg: clamp(32px, 4.5vw, 60px);
  --faq-step-gap: 46px;
  display: block;
  background:
    radial-gradient(120% 55% at 90% -8%, rgba(70, 239, 210, .10), transparent 58%),
    radial-gradient(90% 45% at 2% 6%, rgba(142, 33, 54, .13), transparent 62%),
    var(--sx-deep);
  color: var(--sx-white);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(28px, 5vw, 60px);
}

.page-faq .faq-hero__inner {
  position: relative;
  padding-bottom: clamp(28px, 4vw, 46px);
}

.page-faq .faq-hero__inner::after {
  content: "";
  position: absolute;
  left: var(--sx-gutter);
  right: var(--sx-gutter);
  bottom: 0;
  height: 5px;
  background-image: repeating-linear-gradient(90deg, var(--sx-line) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-faq .faq-crumbs {
  margin-bottom: 18px;
}

.page-faq .faq-crumbs__sep {
  margin: 0 6px;
  color: var(--sx-mist);
}

.page-faq .faq-hero__title {
  font-family: var(--sx-ff-head);
  font-size: clamp(34px, 7.4vw, 60px);
  line-height: 1.04;
  letter-spacing: -.02em;
  margin: 12px 0 0;
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--sx-white);
}

/* ---------- 三步排查 ---------- */

.page-faq .faq-triage {
  padding: clamp(40px, 6vw, 76px) 0;
  background: linear-gradient(180deg, rgba(5, 16, 31, .88), rgba(5, 16, 31, .28));
  border-top: 1px solid var(--sx-line);
  border-bottom: 1px solid var(--sx-line);
}

.page-faq .faq-triage__head {
  max-width: 62ch;
}

.page-faq .faq-triage__note {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--sx-mist);
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-faq .faq-step {
  position: relative;
  z-index: 1;
  padding: 24px 20px 24px;
  border: 1px solid var(--sx-line);
  border-radius: 20px 20px 20px 5px;
  background: linear-gradient(170deg, rgba(37, 48, 68, .92), rgba(37, 48, 68, .42));
}

.page-faq .faq-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(70, 239, 210, .55);
  background: rgba(70, 239, 210, .08);
  color: var(--sx-cyan);
  font-size: 14px;
  letter-spacing: .02em;
}

.page-faq .faq-step__title {
  font-family: var(--sx-ff-head);
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -.01em;
  margin: 16px 0 0;
  color: var(--sx-white);
}

.page-faq .faq-step__text {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--sx-mist);
}

/* ---------- 关键词过滤 ---------- */

.page-faq .faq-filter {
  margin-top: clamp(32px, 5vw, 56px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
}

.page-faq .faq-filter__label {
  font-family: var(--sx-ff-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--sx-mist);
  white-space: nowrap;
}

.page-faq .faq-filter__input {
  flex: 1 1 260px;
  min-width: 0;
  padding: 12px 14px;
  font-family: var(--sx-ff-body);
  font-size: 15px;
  color: var(--sx-white);
  background: rgba(37, 48, 68, .55);
  border: 1px solid var(--sx-line);
  border-radius: 10px;
  transition: border-color .2s var(--sx-ease), box-shadow .2s var(--sx-ease);
}

.page-faq .faq-filter__input::placeholder {
  color: var(--sx-mist);
}

.page-faq .faq-filter__input:focus {
  outline: none;
  border-color: var(--sx-cyan);
  box-shadow: 0 0 0 3px rgba(70, 239, 210, .16);
}

/* ---------- 主布局：左锚点 + 右答案 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding-top: clamp(32px, 5vw, 56px);
  padding-bottom: clamp(48px, 7vw, 96px);
  align-items: start;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--sx-ff-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--sx-mist);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--sx-line);
  border-radius: 8px;
  color: var(--sx-mist);
  font-size: 14px;
  line-height: 1.3;
  white-space: nowrap;
  text-decoration: none;
  transition: color .2s var(--sx-ease), border-color .2s var(--sx-ease), background .2s var(--sx-ease);
}

.page-faq .faq-rail__link .sx-num {
  font-size: 11px;
  color: var(--sx-clay);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--sx-white);
  border-color: rgba(70, 239, 210, .5);
  background: rgba(70, 239, 210, .07);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--sx-header-h) + 28px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 6vw, 80px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--sx-line);
}

.page-faq .faq-group__no {
  flex: none;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--sx-cyan);
  border: 1px solid rgba(70, 239, 210, .38);
  border-radius: 5px;
  padding: 3px 7px;
}

.page-faq .faq-group__head .sx-h2 {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.25;
}

.page-faq .faq-group__desc {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--sx-mist);
}

.page-faq .faq-group__body--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 18px;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  margin-top: 18px;
}

.page-faq .faq-item {
  border: 1px solid var(--sx-line);
  border-radius: 5px 16px 16px 16px;
  background: rgba(37, 48, 68, .42);
  margin-top: 10px;
  overflow: hidden;
  transition: border-color .22s var(--sx-ease), background .22s var(--sx-ease), box-shadow .22s var(--sx-ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(70, 239, 210, .42);
  background: linear-gradient(180deg, rgba(37, 48, 68, .92), rgba(37, 48, 68, .5));
  box-shadow: inset 3px 0 0 var(--sx-cyan);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--sx-ease);
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--sx-cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__idx {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--sx-mist);
  transition: color .2s var(--sx-ease);
}

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

.page-faq .faq-item__text {
  font-family: var(--sx-ff-head);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--sx-white);
  word-break: break-word;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--sx-mist);
  transition: transform .22s var(--sx-ease), background .22s var(--sx-ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--sx-cyan);
}

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

.page-faq .faq-item__a {
  padding: 0 18px 20px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--sx-white);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 62ch;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a ol,
.page-faq .faq-item__a ul {
  margin: 0 0 12px;
  padding-left: 1.35em;
  max-width: 62ch;
}

.page-faq .faq-item__a li {
  margin-bottom: 7px;
}

.page-faq .faq-item__a a {
  color: var(--sx-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--sx-orange);
}

/* ---------- 字段对照表 ---------- */

.page-faq .faq-tablewrap {
  margin: 6px 0 14px;
  overflow-x: auto;
  border: 1px solid var(--sx-line);
  border-radius: 10px;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-family: var(--sx-ff-mono);
  font-size: 13px;
  letter-spacing: .01em;
}

.page-faq .faq-table__cap {
  caption-side: top;
  text-align: left;
  padding: 10px 14px 8px;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--sx-mist);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--sx-line);
  vertical-align: top;
  line-height: 1.62;
}

.page-faq .faq-table th {
  width: 40%;
  font-weight: 500;
  color: var(--sx-mist);
  white-space: normal;
}

.page-faq .faq-table td {
  color: var(--sx-white);
}

.page-faq .faq-table tr:last-child th,
.page-faq .faq-table tr:last-child td {
  border-bottom: 0;
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 0;
  max-width: 400px;
}

.page-faq .faq-figure--wide {
  max-width: 720px;
  margin-top: 26px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--sx-line);
  border-radius: 18px 18px 18px 5px;
}

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--sx-mist);
}

/* ---------- 联系块 ---------- */

.page-faq .faq-contact {
  margin-top: 18px;
  padding: 24px 20px;
  border: 1px solid var(--sx-line);
  border-radius: 20px 20px 20px 5px;
  background: linear-gradient(150deg, rgba(37, 48, 68, .8), rgba(5, 16, 31, .5));
}

.page-faq .faq-contact .faq-group__desc {
  margin-top: 0;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--sx-line);
}

.page-faq .faq-contact__list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__k {
  flex: 0 0 88px;
  font-family: var(--sx-ff-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--sx-mist);
  padding-top: 2px;
}

.page-faq .faq-contact__v {
  flex: 1 1 220px;
  min-width: 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--sx-white);
  word-break: break-word;
}

.page-faq .faq-contact__btn {
  margin-top: 20px;
}

/* ---------- 中屏 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--faq-step-gap);
  }

  .page-faq .faq-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 48px;
    left: 100%;
    width: var(--faq-step-gap);
    height: 1px;
    background-image: repeating-linear-gradient(90deg, rgba(70, 239, 210, .6) 0 4px, transparent 4px 10px);
    pointer-events: none;
  }

  .page-faq .faq-figure {
    max-width: 100%;
  }
}

/* ---------- 桌面：左锚点 + 右答案 ---------- */

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: var(--faq-gap-lg);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--sx-header-h) + 24px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    border: 0;
    border-left: 2px solid var(--sx-line);
    border-radius: 0 8px 8px 0;
    padding: 10px 12px;
    white-space: normal;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: rgba(70, 239, 210, .06);
    border-left-color: var(--sx-cyan);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-group__body--split {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-group__body--split .faq-list {
    margin-top: 0;
  }

  .page-faq .faq-group__body--split .faq-figure {
    position: sticky;
    top: calc(var(--sx-header-h) + 24px);
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item__idx,
  .page-faq .faq-rail__link,
  .page-faq .faq-filter__input {
    transition: none;
  }
}