.page-faq {
  --faq-index-w: 268px;
  --faq-line: 1px solid var(--steel);
  --faq-sunk: #0A1220;
}

.page-faq .breadcrumb__current {
  color: var(--muted);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .06em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 20px 0 40px;
  border-bottom: var(--faq-line);
  background:
    linear-gradient(180deg, rgba(255, 107, 44, .07), rgba(6, 10, 18, 0) 62%),
    var(--ink);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0 26%, var(--mint) 26% 46%, transparent 46%);
  opacity: .85;
}

.page-faq .faq-hero__scale {
  height: 9px;
  margin: 14px 0 26px;
  border-top: 1px solid var(--steel);
  background-image: repeating-linear-gradient(90deg, var(--steel) 0 1px, transparent 1px 26px);
  background-repeat: repeat-x;
  background-size: auto 7px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 14px;
  font-size: clamp(30px, 7.2vw, 54px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--white);
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 0 0 22px;
  max-width: 56ch;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-hero__chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--steel);
  background: var(--panel);
  color: var(--white);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-hero__chip .num {
  font-size: 11px;
  color: var(--orange);
}

.page-faq .faq-hero__chip:hover {
  border-color: var(--orange);
  color: var(--orange);
  transform: translateY(-1px);
}

.page-faq .faq-hero__chip:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--steel);
  background: var(--panel);
  box-shadow: 10px 10px 0 rgba(13, 22, 36, .9);
}

.page-faq .faq-hero__media::before {
  content: "IDX / 05";
  position: absolute;
  top: -1px;
  right: -1px;
  padding: 3px 8px;
  background: var(--orange);
  color: #150A03;
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .12em;
}

.page-faq .faq-hero__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-hero__media .media-frame__caption {
  margin: 10px 2px 0;
  font-family: var(--font-data);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: .04em;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: 34px 0 56px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 30px;
}

/* 分类索引 */
.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-index__label {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  color: var(--white);
  font-size: 14.5px;
  text-decoration: none;
  border-left: 2px solid var(--steel);
  background: linear-gradient(90deg, rgba(21, 34, 53, .95), rgba(21, 34, 53, 0));
  transition: border-color .16s var(--ease), color .16s var(--ease);
}

.page-faq .faq-index__link:hover {
  border-left-color: var(--orange);
  color: var(--orange);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--mint);
  letter-spacing: .05em;
}

.page-faq .faq-index__cta {
  align-self: flex-start;
  font-size: 13.5px;
}

/* 分组 */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 22px);
  padding-bottom: 34px;
}

.page-faq .faq-group + .faq-group {
  border-top: var(--faq-line);
  padding-top: 30px;
}

.page-faq .faq-group:last-child {
  padding-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  font-family: var(--font-data);
  font-size: clamp(26px, 5vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 3.4vw, 25px);
  line-height: 1.3;
  color: var(--white);
}

.page-faq .faq-group__note {
  flex-basis: 100%;
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
}

/* 区间色带 */
.page-faq .faq-band {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.page-faq .faq-band__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--steel);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-band__row--mint {
  border-left-color: var(--mint);
}

.page-faq .faq-band__name {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--white);
}

.page-faq .faq-band__note {
  flex-basis: 100%;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* 标签维度图 */
.page-faq .faq-figure {
  margin: 0 0 18px;
  display: grid;
  gap: 16px;
}

.page-faq .faq-figure__media {
  margin: 0;
  border: 1px solid var(--steel);
  background: var(--sunk, var(--panel));
  padding: 8px;
}

.page-faq .faq-figure__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure__media .media-frame__caption {
  margin: 8px 2px 0;
  font-size: 11.5px;
  color: var(--muted);
  font-family: var(--font-data);
}

.page-faq .faq-dims {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-faq .faq-dims li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  padding: 10px 12px;
  background: var(--raise);
  border-left: 2px solid var(--mint);
}

.page-faq .faq-dims__k {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--mint);
  letter-spacing: .04em;
}

.page-faq .faq-dims__v {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* 折叠问答 */
.page-faq .faq-item {
  margin-bottom: 8px;
  background: var(--raise);
  border: 1px solid var(--steel);
  transition: border-color .18s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: #3A4F6D;
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 15px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-data);
  font-size: 11.5px;
  color: var(--mint);
  letter-spacing: .05em;
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  margin: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--orange);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform .18s var(--ease);
}

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

.page-faq .faq-item__body {
  margin-top: 2px;
  padding: 12px 15px 15px;
  border-top: 1px solid var(--steel);
  background: linear-gradient(180deg, rgba(10, 18, 32, .65), rgba(10, 18, 32, 0));
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-item__body a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__body a:hover {
  color: var(--focus);
}

.page-faq .faq-item__body a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- 联系区 ---------- */
.page-faq .faq-help {
  padding: 40px 0 56px;
  border-top: var(--faq-line);
  background:
    linear-gradient(180deg, var(--panel), var(--ink) 78%);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-help__title {
  margin: 8px 0 12px;
  font-size: clamp(22px, 4.4vw, 32px);
  line-height: 1.25;
  color: var(--white);
}

.page-faq .faq-help__lead {
  margin: 0 0 20px;
  max-width: 48ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-help__card {
  padding: 20px;
  border: 1px solid var(--steel);
  border-top: 3px solid var(--orange);
  background: var(--raise);
}

.page-faq .faq-help__mail {
  margin: 10px 0 14px;
  font-size: clamp(15px, 3.6vw, 19px);
  color: var(--white);
  word-break: break-all;
}

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

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
  padding-top: 8px;
  border-top: 1px solid var(--steel);
}

.page-faq .faq-help__list .num {
  font-size: 11px;
  color: var(--orange);
  letter-spacing: .08em;
  padding-top: 2px;
}

.page-faq .faq-help__hint {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-figure {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 22px 0 52px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16.5px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
    align-items: start;
    gap: 40px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    padding: 44px 0 68px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }

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

  .page-faq .faq-item__body {
    padding: 14px 20px 18px 58px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__chip,
  .page-faq .faq-item,
  .page-faq .faq-item__sign::after {
    transition: none;
  }

  .page-faq .faq-hero__chip:hover {
    transform: none;
  }
}

.page-faq {
  --sunk: transparent;
}