.page-faq {
  --faq-body: rgba(242, 245, 243, .74);
  --faq-dim: rgba(242, 245, 243, .48);
  --faq-card: var(--yx-carbon);
  --faq-line: rgba(242, 245, 243, .10);
  padding-bottom: clamp(48px, 7vw, 110px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 62px) 0 clamp(30px, 5vw, 58px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -42%;
  width: min(760px, 92%);
  height: 460px;
  background: radial-gradient(closest-side, rgba(183, 255, 60, .14), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 22%;
  right: -8%;
  width: 42%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(90, 216, 255, .55));
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: 18px 0 0;
  font-family: var(--yx-sans);
  font-weight: 300;
  font-size: clamp(2rem, 6.2vw, 4rem);
  line-height: 1.08;
  letter-spacing: -.015em;
  color: var(--yx-mist);
  max-width: 22ch;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--yx-lime);
  font-weight: 400;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 64ch;
  color: var(--faq-body);
  font-size: 1rem;
  line-height: 1.8;
}

.page-faq .faq-jump {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 8px 15px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  color: var(--yx-mist);
  font-size: .82rem;
  letter-spacing: .02em;
  text-decoration: none;
  transition: border-color .22s var(--yx-ease), color .22s var(--yx-ease), background-color .22s var(--yx-ease);
}

.page-faq .faq-jump a:hover {
  border-color: rgba(183, 255, 60, .6);
  color: var(--yx-lime);
  background: rgba(31, 58, 26, .42);
}

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

/* ---------- 骨架：章节索引 + 正文 ---------- */
.page-faq .faq-shell {
  display: block;
}

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

.page-faq .yx-rail {
  position: sticky;
  top: var(--yx-head-h);
  z-index: 6;
  margin: 0 0 4px;
  padding: 10px 0;
  background: rgba(7, 10, 12, .92);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .yx-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .yx-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .yx-rail__item {
  flex: 0 0 auto;
}

.page-faq .yx-rail__item a {
  display: block;
  padding: 7px 13px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--faq-dim);
  font-size: .78rem;
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--yx-ease), background-color .2s var(--yx-ease), border-color .2s var(--yx-ease);
}

.page-faq .yx-rail__item a:hover {
  color: var(--yx-mist);
}

.page-faq .yx-rail__item a[aria-current="true"] {
  color: var(--yx-ice);
  border-color: rgba(90, 216, 255, .42);
  background: rgba(14, 42, 51, .72);
}

/* ---------- 区块 ---------- */
.page-faq .faq-section {
  padding: clamp(38px, 6vw, 78px) 0;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: calc(var(--yx-head-h) + 76px);
}

.page-faq .faq-flow > .faq-section:first-child {
  padding-top: clamp(26px, 4vw, 48px);
  border-top: 0;
}

.page-faq .faq-section .yx-section__head {
  margin-bottom: 20px;
}

.page-faq .faq-h2 {
  margin: 12px 0 0;
  font-weight: 300;
}

.page-faq .faq-intro {
  margin: 0;
  max-width: 68ch;
  color: var(--faq-body);
  font-size: .95rem;
  line-height: 1.8;
}

.page-faq .faq-intro a,
.page-faq .faq-support__text a {
  color: var(--yx-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(90, 216, 255, .4);
  transition: color .2s var(--yx-ease), border-color .2s var(--yx-ease);
}

.page-faq .faq-intro a:hover,
.page-faq .faq-support__text a:hover {
  color: var(--yx-lime);
  border-color: var(--yx-lime);
}

/* ---------- 文档索引 ---------- */
.page-faq .faq-doc {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-faq .faq-doc__row {
  display: grid;
  gap: 16px;
  padding: 22px clamp(16px, 2.6vw, 28px);
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-radius: 22px 22px 22px 6px;
  transition: border-color .25s var(--yx-ease), transform .25s var(--yx-ease);
}

.page-faq .faq-doc__row:hover {
  border-color: rgba(183, 255, 60, .4);
  transform: translateX(3px);
}

.page-faq .faq-doc__lead {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-doc__no {
  font-family: var(--yx-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--yx-lime);
}

.page-faq .faq-doc__name {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--yx-mist);
}

.page-faq .faq-doc__desc {
  margin: 0;
  flex: 1 0 100%;
  color: var(--faq-dim);
  font-size: .84rem;
  line-height: 1.6;
}

.page-faq .faq-doc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-doc__list li {
  position: relative;
  padding-left: 18px;
  color: var(--faq-body);
  font-size: .9rem;
  line-height: 1.65;
}

.page-faq .faq-doc__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 1px;
  background: var(--yx-ice);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: 24px 24px 24px 8px;
  border: 1px solid var(--faq-line);
  background: var(--yx-rock);
}

.page-faq .faq-figure .yx-media__cap {
  margin-top: 12px;
  color: var(--faq-dim);
  font-size: .78rem;
  letter-spacing: .04em;
}

/* ---------- 三步 ---------- */
.page-faq .faq-steps {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  column-gap: 18px;
  padding-bottom: 30px;
}

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

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 58px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, rgba(183, 255, 60, .55), rgba(183, 255, 60, .06));
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step__no {
  grid-row: 1 / span 2;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 16px 16px 16px 4px;
  border: 1px solid rgba(183, 255, 60, .42);
  background: rgba(31, 58, 26, .55);
  color: var(--yx-lime);
  font-family: var(--yx-mono);
  font-size: 1.15rem;
  font-weight: 700;
}

.page-faq .faq-step h3 {
  grid-column: 2;
  margin: 10px 0 0;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--yx-mist);
  line-height: 1.5;
}

.page-faq .faq-step p {
  grid-column: 2;
  margin: 8px 0 0;
  color: var(--faq-body);
  font-size: .92rem;
  line-height: 1.75;
}

/* ---------- 订阅与刷新 ---------- */
.page-faq .faq-set {
  margin-top: 30px;
}

.page-faq .faq-panel {
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-radius: 26px 26px 26px 8px;
}

.page-faq .faq-panel--pulse {
  background: linear-gradient(160deg, rgba(14, 42, 51, .72), var(--faq-card) 62%);
  border-color: rgba(90, 216, 255, .22);
}

.page-faq .faq-panel__title {
  margin: 0;
  font-size: 1.14rem;
  font-weight: 600;
  color: var(--yx-mist);
}

.page-faq .faq-panel__text {
  margin: 12px 0 0;
  color: var(--faq-body);
  font-size: .92rem;
  line-height: 1.75;
}

.page-faq .faq-statusline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 0;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 180, 74, .34);
  background: rgba(255, 180, 74, .08);
  color: var(--yx-amber);
  font-size: .78rem;
  letter-spacing: .04em;
}

.page-faq .faq-statusline__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--yx-amber);
  box-shadow: 0 0 0 4px rgba(255, 180, 74, .16);
}

.page-faq .faq-keys {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  border-radius: 14px;
  overflow: hidden;
  background: var(--faq-line);
}

.page-faq .faq-keys li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  background: var(--yx-ink);
}

.page-faq .faq-keys span {
  color: var(--faq-dim);
  font-size: .8rem;
  letter-spacing: .04em;
  flex: 0 0 auto;
}

.page-faq .faq-keys strong {
  font-family: var(--yx-mono);
  font-size: .9rem;
  font-weight: 700;
  color: var(--yx-ice);
  text-align: right;
}

/* ---------- 账号与数据 ---------- */
.page-faq .faq-account {
  margin-top: 28px;
  display: grid;
  gap: 20px;
}

.page-faq .faq-account__item {
  padding-top: 18px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-account__item h3 {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--yx-mist);
}

.page-faq .faq-account__item p {
  margin: 0;
  color: var(--faq-body);
  font-size: .9rem;
  line-height: 1.75;
}

.page-faq .faq-figures {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.page-faq .faq-figures li {
  padding: 18px;
  border-radius: 20px 20px 20px 6px;
  border: 1px solid rgba(90, 216, 255, .18);
  background: linear-gradient(150deg, rgba(14, 42, 51, .85), rgba(18, 23, 27, .92));
}

.page-faq .faq-figures strong {
  display: block;
  font-family: var(--yx-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--yx-ice);
  letter-spacing: -.01em;
}

.page-faq .faq-figures span {
  display: block;
  margin-top: 6px;
  color: var(--faq-dim);
  font-size: .78rem;
  letter-spacing: .06em;
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-qa {
  margin-top: 26px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-qa details {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-qa summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 20px 40px 20px 0;
  color: var(--yx-mist);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  transition: color .2s var(--yx-ease);
}

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

.page-faq .faq-qa summary::after {
  content: "";
  position: absolute;
  right: 6px;
  top: 26px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--yx-lime);
  border-bottom: 2px solid var(--yx-lime);
  transform: rotate(45deg);
  transition: transform .25s var(--yx-ease);
}

.page-faq .faq-qa details[open] summary {
  color: var(--yx-lime);
}

.page-faq .faq-qa details[open] summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-qa summary:focus-visible {
  outline: 2px solid var(--yx-lime);
  outline-offset: 3px;
}

.page-faq .faq-qa__no {
  display: inline-block;
  min-width: 2.8em;
  font-family: var(--yx-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--yx-amber);
}

.page-faq .faq-qa__body {
  padding: 0 0 22px;
}

.page-faq .faq-qa__body p {
  margin: 0;
  max-width: 72ch;
  color: var(--faq-body);
  font-size: .92rem;
  line-height: 1.8;
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  position: relative;
  padding: clamp(26px, 5vw, 56px);
  border-radius: 28px 28px 28px 8px;
  border: 1px solid rgba(183, 255, 60, .26);
  background:
    radial-gradient(130% 150% at 100% 0%, rgba(183, 255, 60, .16), transparent 58%),
    var(--faq-card);
  overflow: hidden;
}

.page-faq .faq-support__title {
  margin: 14px 0 0;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  font-weight: 300;
  line-height: 1.2;
  color: var(--yx-mist);
  max-width: 20ch;
}

.page-faq .faq-support__text {
  margin: 16px 0 0;
  max-width: 62ch;
  color: var(--faq-body);
  font-size: .95rem;
  line-height: 1.8;
}

.page-faq .faq-support .yx-btn {
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-doc__row {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
    column-gap: 28px;
  }

  .page-faq .faq-doc__lead {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-faq .faq-doc__desc {
    flex: 0 0 auto;
  }

  .page-faq .faq-account {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 34px;
  }

  .page-faq .faq-hero__title {
    max-width: 18ch;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .yx-rail {
    top: calc(var(--yx-head-h) + 34px);
    margin: 0;
    padding: 0 0 0 15px;
    background: none;
    border-bottom: 0;
    border-left: 1px solid var(--faq-line);
  }

  .page-faq .yx-rail__list {
    flex-direction: column;
    gap: 16px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .yx-rail__item {
    flex: 0 0 auto;
  }

  .page-faq .yx-rail__item a {
    position: relative;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: none;
    font-size: .74rem;
    letter-spacing: .1em;
    line-height: 1.5;
    white-space: normal;
  }

  .page-faq .yx-rail__item a[aria-current="true"] {
    color: var(--yx-ice);
    background: none;
    border-color: transparent;
  }

  .page-faq .yx-rail__item a[aria-current="true"]::before {
    content: "";
    position: absolute;
    left: -16px;
    top: 50%;
    width: 12px;
    height: 2px;
    background: var(--yx-ice);
    transform: translateY(-50%);
  }

  .page-faq .faq-section {
    scroll-margin-top: calc(var(--yx-head-h) + 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-doc__row,
  .page-faq .faq-jump a,
  .page-faq .yx-rail__item a,
  .page-faq .faq-qa summary,
  .page-faq .faq-qa summary::after {
    transition: none;
  }

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