.page-faq {
  background: var(--cloud);
  color: var(--ink);
  --faq-line: rgba(11, 13, 18, .12);
  --faq-line-dark: rgba(248, 243, 231, .16);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(242, 181, 68, .16), transparent 58%),
    linear-gradient(160deg, var(--ink) 0%, var(--indigo) 100%);
  color: var(--cloud);
  padding: clamp(22px, 4vw, 36px) 0 clamp(38px, 7vw, 78px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -10% 42% -10% -18%;
  background: linear-gradient(128deg, var(--red) 0%, var(--red-dark) 46%, var(--red-deep) 100%);
  clip-path: polygon(0 0, 78% 0, 40% 100%, 0 100%);
  opacity: .92;
  z-index: -2;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(58deg, rgba(248, 243, 231, .06) 0 1px, transparent 1px 16px);
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 16px;
  max-width: var(--w-max);
}

.page-faq .faq-hero__crumbs .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .04em;
}

.page-faq .faq-hero__crumbs .breadcrumbs__item {
  color: var(--on-dark-soft);
}

.page-faq .faq-hero__crumbs .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--on-dark-soft);
}

.page-faq .faq-hero__crumbs .breadcrumbs__link {
  color: var(--cloud);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-hero__crumbs .breadcrumbs__link:hover,
.page-faq .faq-hero__crumbs .breadcrumbs__link:focus-visible {
  border-bottom-color: var(--gold);
}

.page-faq .faq-hero__eyebrow {
  margin: 6px 0 0;
  color: var(--gold);
  font-family: var(--font-latin);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 68px);
  line-height: 1.16;
  letter-spacing: -.01em;
  max-width: 18ch;
  text-shadow: 0 2px 0 rgba(11, 13, 18, .28);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--on-dark);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 9px 16px 9px 14px;
  border-radius: 999px;
  border: 1px solid var(--faq-line-dark);
  background: rgba(248, 243, 231, .08);
  color: var(--cloud);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  border-left-width: 4px;
  transition: background .2s var(--ease), transform .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: rgba(248, 243, 231, .16);
  transform: translateY(-2px);
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-faq .faq-jump__link--entry { border-left-color: var(--red); }
.page-faq .faq-jump__link--account { border-left-color: var(--amber); }
.page-faq .faq-jump__link--download { border-left-color: var(--jade); }
.page-faq .faq-jump__link--activity { border-left-color: var(--gold); }

/* ---------- 三栏层叠布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: clamp(28px, 5vw, 52px);
  padding-bottom: clamp(44px, 7vw, 88px);
}

/* 左索引 */
.page-faq .faq-index {
  border-top: 3px solid var(--ink);
  padding-top: 12px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--scale);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  position: relative;
  display: block;
  white-space: nowrap;
  padding: 7px 12px 7px 14px;
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-sm);
  background: #fff;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-index__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  border-radius: 2px;
  background: var(--red);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--red-dark);
  border-color: var(--red);
  background: #fff;
  outline: none;
}

.page-faq .faq-index__link:hover::before,
.page-faq .faq-index__link:focus-visible::before {
  transform: scaleY(1);
}

/* ---------- 正文 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-block {
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(34px, 5vw, 56px);
}

.page-faq .faq-block__head {
  max-width: 60ch;
}

.page-faq .faq-block__head .eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-latin);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--red-dark);
}

.page-faq .faq-block__head .section-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.28;
  color: var(--ink);
}

.page-faq .faq-block__intro {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: #2a2f3b;
}

.page-faq .faq-inline-link {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: #444b59;
}

.page-faq .faq-inline-link a {
  color: var(--red-dark);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-inline-link a:hover,
.page-faq .faq-inline-link a:focus-visible {
  color: var(--ink);
  outline: none;
}

/* 数据点 */
.page-faq .faq-points {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-points li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  background: #fff;
  border-left: 4px solid var(--red);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14.5px;
  line-height: 1.7;
}

.page-faq .faq-points li:nth-child(2) { border-left-color: var(--amber); }
.page-faq .faq-points li:nth-child(3) { border-left-color: var(--jade); }

.page-faq .faq-points__num {
  flex: none;
  min-width: 34px;
  font-family: var(--font-latin);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--ink);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 24px 0 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--indigo);
}

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

.page-faq .faq-figure .media-frame__caption {
  margin: 0;
  padding: 10px 16px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--on-dark-soft);
}

/* 内联三步 */
.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-faq .faq-steps__item {
  padding: 16px 18px 18px;
  background: #fff;
  border-top: 2px solid var(--faq-line);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.page-faq .faq-steps__no {
  margin: 0 0 6px;
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--red-dark);
}

.page-faq .faq-steps__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
}

.page-faq .faq-steps__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #414855;
}

/* 四步时间轴 */
.page-faq .faq-timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 0 0 20px;
}

.page-faq .faq-timeline__item::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 30px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--red) 0%, rgba(215, 38, 46, .18) 100%);
}

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

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

.page-faq .faq-timeline__no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 30px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--gold);
  font-family: var(--font-latin);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
}

.page-faq .faq-timeline__title {
  margin: 4px 0 4px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
}

.page-faq .faq-timeline__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: #414855;
}

/* 多端卡片 */
.page-faq .faq-devices {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-device {
  padding: 18px;
  background: var(--indigo);
  color: var(--cloud);
  border-radius: var(--radius);
  border-left: 4px solid var(--jade);
}

.page-faq .faq-device:nth-child(2) { border-left-color: var(--amber); }
.page-faq .faq-device:nth-child(3) { border-left-color: var(--gold); }

.page-faq .faq-device__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--gold);
}

.page-faq .faq-device p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark);
}

/* ---------- 折叠问题 ---------- */
.page-faq .faq-group {
  margin-top: 26px;
}

.page-faq .faq-group__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 4px;
  padding-bottom: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--cloud);
}

.page-faq .faq-tag--entry { background: var(--red); }
.page-faq .faq-tag--account { background: var(--amber); color: var(--ink); }
.page-faq .faq-tag--download { background: var(--jade); }
.page-faq .faq-tag--activity { background: var(--gold); color: var(--ink); }

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
  background: transparent;
  transition: background .18s var(--ease);
}

.page-faq .faq-item[open] {
  background: #fff;
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 10px 14px 4px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--red-dark);
  outline: none;
}

.page-faq .faq-item > summary:focus-visible {
  box-shadow: inset 0 0 0 2px var(--gold);
  border-radius: var(--radius-sm);
}

.page-faq .faq-item__no {
  flex: none;
  min-width: 28px;
  font-family: var(--font-latin);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--scale);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--red-dark);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-weight: 600;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  align-self: center;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--red);
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .faq-item__icon::before {
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 12px 16px 44px;
  font-size: 14.5px;
  line-height: 1.8;
  color: #3d4450;
}

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

.page-faq .faq-item__body a {
  color: var(--red-dark);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--ink);
  outline: none;
}

/* ---------- 渠道 ---------- */
.page-faq .faq-channels {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-channel {
  padding: 18px;
  background: #fff;
  border-radius: var(--radius);
  border-top: 3px solid var(--ink);
}

.page-faq .faq-channel--urgent {
  background: var(--ink);
  border-top-color: var(--gold);
  color: var(--cloud);
}

.page-faq .faq-channel__name {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--red-dark);
}

.page-faq .faq-channel--urgent .faq-channel__name {
  color: var(--gold);
}

.page-faq .faq-channel__value {
  margin: 0 0 8px;
  font-family: var(--font-latin);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-channel--urgent .faq-channel__value {
  color: var(--cloud);
}

.page-faq .faq-channel p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #414855;
}

.page-faq .faq-channel--urgent p:last-child {
  color: var(--on-dark);
}

/* ---------- 右快捷卡 ---------- */
.page-faq .faq-side {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .faq-card {
  padding: 18px;
  background: #fff;
  border-radius: var(--radius);
  border-left: 4px solid var(--faq-line);
}

.page-faq .faq-card--gold {
  background: linear-gradient(150deg, rgba(242, 181, 68, .18), rgba(242, 181, 68, .05));
  border-left-color: var(--gold);
}

.page-faq .faq-card--dark {
  background: var(--indigo);
  border-left-color: var(--red);
  color: var(--cloud);
}

.page-faq .faq-card__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .faq-card--dark .faq-card__title {
  color: var(--gold);
}

.page-faq .faq-card p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: #414855;
}

.page-faq .faq-card--dark p {
  color: var(--on-dark);
}

.page-faq .faq-card .btn {
  display: inline-block;
}

.page-faq .faq-copy {
  cursor: pointer;
  font-family: var(--font-body);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-points li {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    border-left: 0;
    border-top: 4px solid var(--red);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  }

  .page-faq .faq-points li:nth-child(2) { border-top-color: var(--amber); }
  .page-faq .faq-points li:nth-child(3) { border-top-color: var(--jade); }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-devices {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-channel--urgent {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 178px minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 84px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    white-space: normal;
    border-color: transparent;
    background: transparent;
    padding-left: 14px;
    font-size: 13.5px;
    color: #4a5160;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    color: var(--red-dark);
    background: rgba(215, 38, 46, .06);
    border-color: transparent;
  }

  .page-faq .faq-side {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-layout {
    grid-template-columns: 178px minmax(0, 1fr) 272px;
  }

  .page-faq .faq-side {
    grid-column: 3;
    grid-row: 1;
    position: sticky;
    top: 84px;
    grid-template-columns: minmax(0, 1fr);
  }
}

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

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