.page-faq {
  --faq-rail: 216px;
  --faq-gap: clamp(16px, 3vw, 28px);
  --faq-warn: rgba(239, 192, 44, 0.14);
  --faq-volt-soft: rgba(31, 199, 182, 0.12);
  background: var(--c-gravel);
  color: var(--c-deep);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(30px, 6vw, 68px) 0 clamp(28px, 4.5vw, 50px);
  background:
    radial-gradient(120% 150% at 86% -12%, rgba(31, 199, 182, 0.24) 0%, rgba(31, 199, 182, 0) 58%),
    linear-gradient(158deg, var(--c-blue) 0%, var(--c-ink) 100%);
  color: var(--c-fog);
  border-bottom: 4px solid var(--c-volt);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 44%;
  right: -12%;
  bottom: 16%;
  height: 2px;
  background: var(--c-line);
  opacity: 0.35;
  transform: rotate(-13deg);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  position: relative;
  z-index: 1;
  font-size: 14px;
}

.page-faq .faq-hero .breadcrumb__item,
.page-faq .faq-hero .breadcrumb__item a {
  color: var(--c-line);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb__item[aria-current="page"] {
  color: var(--c-volt);
}

.page-faq .faq-hero .breadcrumb__sep {
  color: var(--c-steel);
}

.page-faq .faq-hero .eyebrow {
  position: relative;
  z-index: 1;
  margin-top: 22px;
  color: var(--c-volt);
}

.page-faq .faq-hero h1 {
  position: relative;
  z-index: 1;
  margin: 14px 0 0;
  max-width: 18ch;
  font-size: clamp(30px, 6.4vw, var(--fs-5));
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lead {
  position: relative;
  z-index: 1;
  margin: 18px 0 0;
  max-width: 34em;
  font-size: var(--fs-1);
  line-height: 1.8;
  color: rgba(247, 247, 244, 0.86);
}

.page-faq .faq-hero__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 顶部横图 ---------- */
.page-faq .faq-plate {
  margin: 0;
  padding: clamp(20px, 4vw, 38px) 0 clamp(18px, 3vw, 30px);
  background: var(--c-ink);
}

.page-faq .faq-plate .figure__media {
  border: var(--edge);
  box-shadow: var(--hard);
}

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

.page-faq .faq-plate .figure__cap {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-line);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  padding-top: clamp(30px, 5vw, 56px);
  padding-bottom: clamp(44px, 7vw, 92px);
}

.page-faq .faq-toc {
  background: var(--c-fog);
  border: var(--edge);
  box-shadow: var(--hard-sm);
  padding: 12px 14px 14px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-steel);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 14px;
  overflow-x: auto;
}

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

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-blue);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  border-bottom-color: var(--c-volt);
}

.page-faq .faq-toc__list .mono {
  font-size: 13px;
  color: var(--c-volt);
}

.page-faq .faq-sec {
  padding-top: clamp(36px, 6vw, 62px);
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-faq .faq-flow > .faq-sec:first-child {
  padding-top: 0;
}

.page-faq .section-head {
  border-bottom: 2px solid var(--c-deep);
  padding-bottom: 12px;
  margin-bottom: var(--faq-gap);
}

.page-faq .section-head__title {
  margin: 0;
  font-size: clamp(22px, 3.6vw, var(--fs-3));
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--c-deep);
}

.page-faq .section-head__note {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-steel);
}

/* ---------- 先确认三件事 ---------- */
.page-faq .faq-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-check {
  display: grid;
  gap: 12px;
  padding: 16px 18px;
  background: var(--c-fog);
  border: var(--edge);
  border-left: 6px solid var(--c-volt);
  box-shadow: var(--hard-sm);
}

.page-faq .faq-check__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-volt);
}

.page-faq .faq-check__title {
  margin: 0 0 6px;
  font-size: var(--fs-2);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-faq .faq-check__body p {
  margin: 0;
  line-height: 1.8;
}

.page-faq .faq-expect {
  display: flex;
  gap: 9px;
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--c-line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-steel);
}

.page-faq .faq-expect .sig {
  flex: 0 0 auto;
  margin-top: 4px;
}

/* ---------- 分步排查（向下收束） ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 3vw, 24px);
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 20px 18px;
  background: var(--c-fog);
  border: var(--edge);
  box-shadow: var(--hard-sm);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--c-blue);
}

.page-faq .faq-step__num {
  font-size: clamp(40px, 8vw, 56px);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--c-blue);
  opacity: 0.92;
}

.page-faq .faq-step__title {
  margin: 0 0 12px;
  font-size: var(--fs-2);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-acts {
  margin: 0;
  padding-left: 1.15em;
  display: grid;
  gap: 8px;
}

.page-faq .faq-acts li {
  line-height: 1.75;
}

.page-faq .faq-step__expect {
  margin: 0;
  padding: 10px 12px;
  border-left: 4px solid var(--c-volt);
  background: var(--faq-volt-soft);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-deep);
}

/* ---------- 入口对照 ---------- */
.page-faq .faq-tabs {
  margin-top: 2px;
}

.page-faq .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .tabs__btn {
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  padding: 10px 16px;
  background: var(--c-fog);
  color: var(--c-blue);
  border: 2px solid var(--c-deep);
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.page-faq .tabs__btn[aria-selected="true"] {
  background: var(--c-blue);
  color: var(--c-fog);
  box-shadow: var(--hard-sm);
}

.page-faq .tabs__btn:hover {
  transform: translateY(-2px);
}

.page-faq .tabs__btn:focus-visible {
  outline: 3px solid var(--c-volt);
  outline-offset: 2px;
}

.page-faq .faq-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--c-fog);
  border: var(--edge);
  font-size: 16px;
}

.page-faq .faq-table__cap {
  caption-side: top;
  text-align: left;
  padding: 10px 14px 12px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-steel);
  background: var(--c-fog);
  border: var(--edge);
  border-bottom: none;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--c-line);
  vertical-align: top;
  line-height: 1.7;
}

.page-faq .faq-table thead th {
  background: var(--c-blue);
  color: var(--c-fog);
  font-size: 14px;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--c-deep);
}

.page-faq .faq-table tbody th {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-deep);
  white-space: nowrap;
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(191, 211, 220, 0.3);
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .faq-table a {
  color: var(--c-blue);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--c-volt);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .faq-table a:hover,
.page-faq .faq-table a:focus-visible {
  background: var(--faq-volt-soft);
}

/* ---------- 手机端显示 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-faq .faq-fixes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-fixes li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: var(--c-fog);
  border: var(--edge);
  box-shadow: var(--hard-sm);
}

.page-faq .faq-fixes .mono {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-volt);
  padding-top: 3px;
}

.page-faq .faq-fixes p {
  margin: 0;
  line-height: 1.75;
}

.page-faq .faq-split__media {
  margin: 0;
}

.page-faq .faq-split__media .figure__media {
  border: var(--edge);
  box-shadow: var(--hard);
}

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

.page-faq .faq-split__media .figure__cap {
  margin-top: 10px;
  font-size: 14px;
  color: var(--c-steel);
}

/* ---------- 四类问题 ---------- */
.page-faq .faq-issues {
  display: grid;
  gap: clamp(14px, 2.6vw, 22px);
}

.page-faq .faq-issue {
  padding: 18px;
  background: var(--c-fog);
  border: var(--edge);
  box-shadow: var(--hard-sm);
}

.page-faq .faq-issue--cache { border-left: 6px solid var(--c-yellow); }
.page-faq .faq-issue--version { border-left: 6px solid var(--c-volt); }
.page-faq .faq-issue--display { border-left: 6px solid var(--c-yellow); }
.page-faq .faq-issue--login { border-left: 6px solid var(--c-red); }

.page-faq .faq-issue__top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
}

.page-faq .faq-issue h3 {
  margin: 0 0 10px;
  font-size: var(--fs-2);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-faq .faq-issue p {
  margin: 0;
  line-height: 1.75;
}

.page-faq .faq-issue__sym {
  color: var(--c-steel);
  font-size: 15px;
}

.page-faq .faq-issue__fix {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 2px solid var(--c-line);
  font-size: 15px;
  color: var(--c-deep);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-call {
  border: var(--edge);
  box-shadow: var(--hard);
  padding: clamp(22px, 4vw, 40px);
  color: var(--c-fog);
}

.page-faq .faq-call .eyebrow {
  color: var(--c-volt);
}

.page-faq .faq-call h2 {
  margin: 10px 0 14px;
  font-size: clamp(24px, 4.2vw, var(--fs-3));
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.page-faq .faq-call > p {
  margin: 0;
  max-width: 34em;
  line-height: 1.85;
  color: rgba(247, 247, 244, 0.86);
}

.page-faq .faq-need {
  list-style: none;
  margin: 20px 0 0;
  padding: 18px 0 0;
  border-top: 2px solid rgba(247, 247, 244, 0.2);
  display: grid;
  gap: 10px;
}

.page-faq .faq-need li {
  position: relative;
  padding-left: 20px;
  line-height: 1.75;
  color: rgba(247, 247, 244, 0.9);
}

.page-faq .faq-need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 10px;
  background: var(--c-volt);
}

.page-faq .faq-call__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 619px) {
  .page-faq .faq-table,
  .page-faq .faq-table tbody,
  .page-faq .faq-table tr,
  .page-faq .faq-table th,
  .page-faq .faq-table td {
    display: block;
    width: 100%;
  }

  .page-faq .faq-table thead {
    display: none;
  }

  .page-faq .faq-table tbody tr {
    padding: 12px 0;
    border-bottom: 2px solid var(--c-deep);
  }

  .page-faq .faq-table tbody tr:last-child {
    border-bottom: none;
  }

  .page-faq .faq-table td {
    border-bottom: none;
    padding: 4px 14px;
  }

  .page-faq .faq-table td::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--c-steel);
    margin-bottom: 3px;
  }
}

@media (min-width: 700px) {
  .page-faq .faq-issues {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-faq .faq-check {
    grid-template-columns: 62px minmax(0, 1fr) 228px;
    gap: 24px;
    align-items: start;
  }

  .page-faq .faq-step {
    grid-template-columns: 92px minmax(0, 1fr) 236px;
    gap: 26px;
    align-items: start;
    padding: 24px 24px 24px 26px;
  }

  .page-faq .faq-step:nth-child(2) {
    width: 92%;
  }

  .page-faq .faq-step:nth-child(3) {
    width: 84%;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 330px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail);
    align-items: start;
  }

  .page-faq .faq-flow {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }

  .page-faq .faq-toc {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-faq .faq-toc__list {
    display: grid;
    gap: 10px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__list a {
    white-space: normal;
    line-height: 1.5;
  }
}

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

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