.page-faq {
  --faq-ink-soft: #C3CDE8;
  --faq-aside: 268px;
  --faq-group-gap: clamp(40px, 7vw, 76px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 5vw, 40px) 0 clamp(30px, 6vw, 64px);
  background:
    radial-gradient(640px 320px at 84% 8%, rgba(108, 92, 231, 0.30), transparent 68%),
    radial-gradient(460px 260px at 6% 92%, rgba(43, 232, 210, 0.12), transparent 72%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(233, 238, 250, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(233, 238, 250, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(160deg, rgba(0, 0, 0, 0.9), transparent 70%);
  -webkit-mask-image: linear-gradient(160deg, rgba(0, 0, 0, 0.9), transparent 70%);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(30px, 6.4vw, 54px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--slate-100);
}

.page-faq .faq-hero__text {
  max-width: 46ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .faq-stats li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-stats__v {
  font-size: clamp(26px, 4vw, 32px);
  font-weight: 500;
  line-height: 1;
  color: var(--cyan-400);
}

.page-faq .faq-stats li:nth-child(2) .faq-stats__v {
  color: var(--orange-500);
}

.page-faq .faq-stats__l {
  font-size: 14px;
  color: var(--slate-350);
}

/* ---------- 工具栏与两栏骨架 ---------- */
.page-faq .faq-toolbar {
  margin-bottom: 28px;
}

.page-faq .filter-bar {
  margin: 12px 0 0;
}

.page-faq .faq-shell {
  display: grid;
  gap: 30px;
  min-width: 0;
}

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

/* ---------- 主题索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate-350);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-pill);
  background: var(--indigo-700);
  color: var(--slate-100);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--cyan-400);
}

.page-faq .faq-index__desc {
  display: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group,
.page-faq .faq-contact {
  scroll-margin-top: 96px;
}

.page-faq .faq-group {
  padding-bottom: var(--faq-group-gap);
  margin-bottom: var(--faq-group-gap);
  border-bottom: 1px solid var(--line-600);
}

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

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

.page-faq .faq-group__num {
  display: block;
  font-size: clamp(30px, 6vw, 44px);
  font-weight: 200;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: rgba(43, 232, 210, 0.30);
}

.page-faq .faq-group__title {
  margin: 0 0 6px;
  font-size: clamp(21px, 3.6vw, 29px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--slate-100);
}

.page-faq .faq-group__desc {
  max-width: 48ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate-350);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  position: relative;
  padding-left: 16px;
  border-bottom: 1px solid var(--line-600);
}

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--cyan-400);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 220ms var(--ease);
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 19px 12px 19px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--slate-100);
  transition: color 180ms var(--ease);
}

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

.page-faq .faq-q:hover {
  color: var(--cyan-400);
}

.page-faq .faq-q__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 12px;
  color: var(--slate-350);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan-400);
}

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

.page-faq .faq-q__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform 220ms var(--ease);
}

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

.page-faq .faq-a {
  padding: 0 12px 22px 38px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-a p {
  max-width: 46ch;
  margin: 0 0 10px;
}

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

.page-faq .faq-a a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-a__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px !important;
}

.page-faq .faq-group__qa {
  margin-top: 4px;
}

/* ---------- 图示 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 26px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-lg);
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-350);
}

.page-faq .faq-group__split {
  display: grid;
  gap: 24px;
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 5vw, 40px);
  border: 1px solid var(--line-600);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(420px 220px at 92% 0%, rgba(255, 122, 46, 0.16), transparent 70%),
    var(--indigo-700);
}

.page-faq .faq-contact__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

.page-faq .faq-contact__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 2px;
  background: var(--orange-500);
}

.page-faq .faq-contact__more {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-350);
}

.page-faq .faq-contact__more a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact__panel {
  padding: 20px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-md);
  background: rgba(7, 11, 34, 0.55);
}

.page-faq .faq-contact__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate-350);
}

.page-faq .faq-contact__hours {
  margin: 0 0 18px;
  font-size: 18px;
  font-weight: 500;
  color: var(--cyan-400);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-contact__value {
  min-width: 0;
  font-size: 13.5px;
  color: var(--slate-100);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  margin: 16px 0 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-350);
}

.page-faq .faq-contact__cta {
  width: 100%;
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1fr) 200px;
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-figure--tall {
    margin-top: 6px;
  }

  .page-faq .faq-figure--wide {
    max-width: 640px;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 3fr);
    gap: clamp(40px, 6vw, 80px);
    align-items: end;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 68px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

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

  .page-faq .faq-index__link {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr);
    align-items: start;
    gap: 12px;
    padding: 12px 14px;
    border-color: transparent;
    border-radius: var(--radius-md);
    background: transparent;
    white-space: normal;
    transform: none;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: var(--indigo-700);
    border-color: var(--line-600);
    transform: none;
  }

  .page-faq .faq-index__body {
    display: grid;
    gap: 4px;
    min-width: 0;
  }

  .page-faq .faq-index__label {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--slate-100);
  }

  .page-faq .faq-index__desc {
    display: block;
    font-size: 12.5px;
    line-height: 1.5;
    color: var(--slate-350);
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 44px;
  }

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

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

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