.page-faq {
  --faq-indent: 44px;
  --faq-tint: rgba(43, 217, 210, 0.08);
  padding-bottom: clamp(96px, 12vw, 168px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(40px, 6vw, 84px) 0 clamp(32px, 4vw, 56px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -10% -6% auto -6%;
  height: 130%;
  background-image:
    linear-gradient(var(--grid-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-faint) 1px, transparent 1px);
  background-size: 68px 68px;
  transform: skewY(-2deg);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero__lead {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-faq .faq-hero h1 {
  max-width: 18ch;
  margin: 0;
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
  margin: 0;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 8px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--grid-line);
  list-style: none;
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__num {
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-faq .faq-hero__label {
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__media {
  margin: 0;
  position: relative;
  border: 1px solid var(--grid-line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
  background: var(--panel);
}

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

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 56px);
  padding-top: clamp(36px, 5vw, 64px);
}

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

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-2);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  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 14px;
  border-bottom: 2px solid transparent;
  color: var(--text-2);
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-bottom-color: var(--cyan);
  background: var(--faq-tint);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(56px, 7vw, 104px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-group__no {
  grid-column: 1;
  grid-row: 1;
  padding-top: 10px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-group__head h2 {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
}

.page-faq .faq-group__note {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  font-size: 15px;
  max-width: 52ch;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.25s var(--ease);
}

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

.page-faq .qa summary:hover .qa__q,
.page-faq .qa summary:focus-visible .qa__q {
  color: var(--cyan);
}

.page-faq .qa__num {
  flex: none;
  min-width: 40px;
  padding-top: 5px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text);
  transition: color 0.25s var(--ease);
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 7px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
}

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

.page-faq .qa[open] summary .qa__q {
  color: var(--text);
}

.page-faq .qa__a {
  padding: 0 0 26px;
  max-width: 62ch;
  animation: faqReveal 0.34s var(--ease) both;
}

.page-faq .qa__a > p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-2);
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 217, 210, 0.4);
}

.page-faq .qa__a a:hover {
  border-bottom-color: var(--orange);
  color: var(--orange);
}

.page-faq .qa--anchor {
  border-left: 3px solid var(--cyan);
  padding-left: 18px;
}

.page-faq .qa--anchor .qa__q {
  font-size: 20px;
}

.page-faq .qa--anchor .qa__num {
  color: var(--cyan);
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 组内配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 10px;
  border: 1px solid var(--grid-line);
  background: var(--panel);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

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

/* ---------- 热门索引 ---------- */
.page-faq .faq-hot {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 32px;
}

.page-faq .faq-hot__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 22px 18px;
  background: var(--panel);
  border: 1px solid var(--grid-line);
  color: var(--text);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-hot__card:hover,
.page-faq .faq-hot__card:focus-visible {
  border-color: var(--orange);
  background: #16223a;
  transform: translateY(-4px);
}

.page-faq .faq-hot__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-hot__q {
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
}

.page-faq .faq-hot__tag {
  align-self: flex-start;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-2);
  border: 1px solid var(--grid-line);
  border-radius: 999px;
}

.page-faq .faq-hot__meter {
  display: block;
  position: relative;
  height: 3px;
  margin-top: 6px;
  background: var(--grid-line);
  overflow: hidden;
}

.page-faq .faq-hot__meter > span {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  display: block;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

.page-faq .faq-hot__meter--high > span {
  width: 88%;
}

.page-faq .faq-hot__meter--mid > span {
  width: 62%;
}

.page-faq .faq-hot__meter--low > span {
  width: 40%;
}

/* ---------- 人工支持出口 ---------- */
.page-faq .faq-outro {
  margin-top: clamp(64px, 8vw, 112px);
}

.page-faq .faq-outro__panel {
  position: relative;
  padding: clamp(26px, 4vw, 52px);
  background:
    linear-gradient(135deg, rgba(122, 92, 255, 0.26), rgba(43, 217, 210, 0.1) 52%, rgba(255, 106, 43, 0.22));
  border: 1px solid var(--grid-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-faq .faq-outro__panel h2 {
  margin: 10px 0 0;
}

.page-faq .faq-outro__text {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  opacity: 0.86;
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 3fr) minmax(0, 9fr);
    gap: clamp(40px, 5vw, 84px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 36px);
    align-self: start;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--grid-line);
  }

  .page-faq .faq-index__list > li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index__link {
    white-space: normal;
    border-bottom: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: 11px 14px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }

  .page-faq .qa__a {
    padding-left: var(--faq-indent);
  }

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

  .page-faq .faq-hot {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-hot__card:nth-child(even) {
    margin-top: 22px;
  }
}

@media (min-width: 1180px) {
  .page-faq {
    --faq-indent: 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }

  .page-faq .faq-hot__card,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa__q {
    transition: none;
  }
}