.page-faq {
  --faq-hair: rgba(237, 228, 211, .18);
  --faq-hair-ink: rgba(16, 18, 20, .10);
  --faq-soft: rgba(16, 18, 20, .64);
  --faq-tint: rgba(47, 227, 200, .10);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--night);
  color: var(--sand);
  padding: 28px 0 56px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -12%;
  width: 58%;
  height: 150%;
  background: var(--pitch);
  transform: rotate(13deg);
  opacity: .92;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  bottom: -46%;
  width: 42%;
  height: 78%;
  background: var(--pitch);
  transform: rotate(-11deg);
  opacity: .55;
}

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

.page-faq .breadcrumbs {
  color: rgba(237, 228, 211, .68);
  font-size: 13px;
  letter-spacing: .04em;
  margin-bottom: 34px;
}

.page-faq .breadcrumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 7vw, 58px);
  line-height: 1.04;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  max-width: 15em;
}

.page-faq .faq-hero__lead {
  font-size: 17px;
  line-height: 1.85;
  color: rgba(237, 228, 211, .86);
  max-width: 46em;
  margin: 0 0 40px;
}

.page-faq .faq-jump {
  display: grid;
  gap: 12px;
}

.page-faq .faq-jump__item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: rgba(247, 245, 241, .05);
  color: var(--sand);
  text-decoration: none;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.page-faq .faq-jump__item:hover {
  background: rgba(247, 245, 241, .1);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .faq-jump__no {
  grid-row: 1 / 3;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
  padding-top: 2px;
}

.page-faq .faq-jump__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: .01em;
}

.page-faq .faq-jump__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(237, 228, 211, .7);
  margin-top: 4px;
}

/* ---------- 版面骨架 ---------- */
.page-faq .faq-hub {
  background: var(--night);
  color: var(--sand);
  padding-top: 8px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 40px;
}

.page-faq .faq-index {
  border-top: 1px solid var(--faq-hair);
  padding-top: 20px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__link {
  flex: 0 0 auto;
  font-size: 14px;
  letter-spacing: .04em;
  color: rgba(237, 228, 211, .82);
  text-decoration: none;
  padding: 8px 14px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.page-faq .faq-index__link:hover {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .faq-index__foot {
  display: none;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 228, 211, .6);
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--faq-hair);
}

.page-faq .faq-flow {
  display: grid;
  gap: 56px;
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 24px;
  border-top: 1px solid var(--faq-hair);
  padding-top: 28px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 16px;
  margin-bottom: 28px;
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
  padding-top: 6px;
}

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 4.4vw, 32px);
  line-height: 1.24;
  letter-spacing: -.01em;
  margin: 6px 0 12px;
  color: var(--sand);
}

.page-faq .faq-group__intro {
  font-size: 16px;
  line-height: 1.85;
  color: rgba(237, 228, 211, .74);
  max-width: 44em;
  margin: 0;
}

.page-faq .faq-group__body {
  display: grid;
  gap: 28px;
  min-width: 0;
}

.page-faq .faq-group__main {
  min-width: 0;
  container-type: inline-size;
}

/* ---------- 步骤条 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  position: relative;
}

.page-faq .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 40px 1fr;
  column-gap: 16px;
  padding-bottom: 26px;
}

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

.page-faq .steps__item::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: 4px;
  width: 1px;
  background: var(--faq-hair);
}

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

.page-faq .steps__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  color: var(--cyan);
  font-size: 15px;
  background: rgba(47, 227, 200, .06);
}

.page-faq .steps__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .01em;
  color: var(--sand);
  margin: 8px 0 8px;
}

.page-faq .steps__item p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(237, 228, 211, .78);
  margin: 0;
}

.page-faq .steps--check .steps__item::before {
  background: rgba(240, 114, 44, .34);
}

.page-faq .steps--check .steps__num {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(240, 114, 44, .08);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--faq-hair);
  padding: 4px 0;
}

.page-faq .qa__q {
  cursor: pointer;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr auto;
  column-gap: 16px;
  align-items: start;
  padding: 16px 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.65;
  color: var(--sand);
}

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

.page-faq .qa__q::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
  transition: transform .2s ease;
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
}

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

.page-faq .qa__a {
  padding: 0 0 20px;
}

.page-faq .qa__a p {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(237, 228, 211, .76);
  margin: 0;
  max-width: 46em;
}

.page-faq .qa__a a,
.page-faq .faq-more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 200, .4);
}

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

/* ---------- 媒体图 ---------- */
.page-faq .faq-media {
  margin: 0;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--faq-hair);
  background: var(--slate);
}

.page-faq .faq-media figcaption {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(237, 228, 211, .58);
  margin-top: 10px;
  padding-left: 12px;
  border-left: 1px solid var(--faq-hair);
}

.page-faq .faq-media--wide img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-media--tall img {
  aspect-ratio: 3 / 4;
}

/* ---------- 研究板与维度清单 ---------- */
.page-faq .board {
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: rgba(247, 245, 241, .04);
  padding: 22px 20px;
  margin-bottom: 24px;
}

.page-faq .board p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(237, 228, 211, .78);
  margin: 0;
}

.page-faq .board__abstract {
  margin-bottom: 22px;
}

.page-faq .board__abstract > .label {
  display: block;
  margin-bottom: 14px;
}

.page-faq .faq-axes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-axes__item {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-left: 2px solid var(--cyan);
  background: rgba(47, 227, 200, .05);
}

.page-faq .faq-axes__name {
  font-weight: 600;
  font-size: 15px;
  color: var(--sand);
}

.page-faq .faq-axes__desc {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(237, 228, 211, .7);
}

.page-faq .board__terms {
  border-top: 1px solid var(--faq-hair);
  padding-top: 20px;
  margin-bottom: 20px;
}

.page-faq .board__terms > .label {
  display: block;
  margin-bottom: 12px;
}

.page-faq .term {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(237, 228, 211, .1);
}

.page-faq .term:last-child {
  border-bottom: 0;
}

.page-faq .term__key {
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-faq .term__val {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 228, 211, .74);
}

.page-faq .board__reading {
  border-top: 1px solid var(--faq-hair);
  padding-top: 20px;
  display: grid;
  gap: 16px;
  justify-items: start;
}

/* ---------- 比分数据带 ---------- */
.page-faq .faq-score-band {
  margin-bottom: 26px;
}

.page-faq .faq-score-band .band__inner {
  display: grid;
  gap: 22px;
}

.page-faq .faq-score-band__cell {
  padding-left: 14px;
  border-left: 2px solid rgba(47, 227, 200, .5);
}

.page-faq .faq-score-band__value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 38px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
  margin: 6px 0 6px;
}

.page-faq .faq-score-band__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(237, 228, 211, .72);
  margin: 0;
}

/* ---------- 表格 ---------- */
.page-faq .faq-scope {
  width: 100%;
  margin-bottom: 24px;
}

.page-faq .faq-scope th,
.page-faq .faq-scope td {
  text-align: left;
  vertical-align: top;
}

/* ---------- 排查提示块 ---------- */
.page-faq .faq-callout {
  background: var(--pitch);
  color: var(--sand);
  border-radius: var(--radius);
  border-left: 3px solid var(--orange);
  padding: 20px 20px 22px;
  margin-bottom: 24px;
}

.page-faq .faq-callout .label {
  display: block;
  margin-bottom: 10px;
}

.page-faq .faq-callout p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(237, 228, 211, .86);
  margin: 0;
  max-width: 42em;
}

/* ---------- 设备差异 ---------- */
.page-faq .faq-devices {
  display: grid;
  gap: 14px;
  margin-bottom: 24px;
}

.page-faq .faq-devices__item {
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: rgba(247, 245, 241, .04);
  padding: 18px 18px 20px;
}

.page-faq .faq-devices__item .label {
  display: block;
  margin-bottom: 8px;
}

.page-faq .faq-devices__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--sand);
  margin: 0 0 8px;
}

.page-faq .faq-devices__item p:last-child {
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(237, 228, 211, .74);
  margin: 0;
}

.page-faq .faq-devices__title .data-num {
  color: var(--cyan);
}

.page-faq .faq-more {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-more p {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(237, 228, 211, .76);
  margin: 0;
}

/* ---------- 底部求助 ---------- */
.page-faq .faq-help {
  border-top: 1px solid var(--faq-hair);
  padding-top: 36px;
}

.page-faq .faq-help__inner {
  display: grid;
  gap: 22px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: var(--pitch);
  padding: 26px 22px;
}

.page-faq .faq-help__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 4vw, 26px);
  letter-spacing: -.01em;
  color: var(--sand);
  margin: 0 0 10px;
}

.page-faq .faq-help__inner p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(237, 228, 211, .8);
  margin: 0;
  max-width: 40em;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 34px 0 72px;
  }

  .page-faq .faq-jump {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-jump__item {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    align-content: start;
    min-height: 172px;
  }

  .page-faq .faq-jump__no {
    grid-row: auto;
    padding-top: 0;
    margin-bottom: 4px;
  }

  .page-faq .faq-group__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: 36px;
    align-items: start;
  }

  .page-faq .faq-group__body--single {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-media--wide img {
    aspect-ratio: 4 / 3;
  }

  .page-faq .faq-score-band .band__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 28px;
  }

  .page-faq .faq-devices {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: center;
    gap: 30px;
    padding: 30px 28px;
  }

  .page-faq .faq-help__actions {
    justify-content: flex-end;
  }
}

/* ---------- 桌面：左侧粘性分类栏 ---------- */
@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    column-gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 28px;
    border-top: 1px solid var(--faq-hair);
    padding-top: 22px;
  }

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

  .page-faq .faq-index__link {
    border: 0;
    border-left: 2px solid var(--faq-hair);
    border-radius: 0;
    padding: 9px 12px;
    white-space: normal;
    font-size: 14.5px;
  }

  .page-faq .faq-index__link:hover {
    background: rgba(47, 227, 200, .1);
    color: var(--cyan);
    border-left-color: var(--cyan);
  }

  .page-faq .faq-index__foot {
    display: block;
  }

  .page-faq .faq-flow {
    gap: 64px;
  }

  .page-faq .faq-group__body {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    column-gap: 44px;
  }

  .page-faq .faq-group__body--single {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-group__title {
    font-size: 32px;
  }
}

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

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