.page-faq {
  --faq-rail-w: 268px;
  --faq-gap: clamp(20px, 2.6vw, 34px);
  --faq-block-pad: clamp(22px, 3vw, 40px);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: 18px;
  padding-bottom: 6px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(26px, 4vw, 54px) clamp(30px, 4.5vw, 60px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
  align-items: center;
}

.page-faq .faq-hero__copy .marker {
  color: var(--turf);
}

.page-faq .faq-hero__copy h1 {
  color: var(--cream);
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero__copy .lede {
  color: rgba(243, 237, 225, 0.82);
  margin-top: 20px;
  max-width: 54ch;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  background: rgba(11, 42, 34, 0.5);
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-block: clamp(30px, 4vw, 58px) clamp(40px, 5vw, 72px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

/* 左侧入口栏 */
.page-faq .faq-rail {
  background: var(--ink);
  color: var(--cream);
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  align-self: start;
}

.page-faq .faq-rail__head {
  color: var(--turf);
  margin: 0 0 16px;
}

.page-faq .faq-rail__nav {
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 12px;
  row-gap: 3px;
  padding: 13px 12px 13px 14px;
  text-decoration: none;
  color: var(--cream);
  border-left: 4px solid transparent;
  background: linear-gradient(90deg, rgba(200, 242, 75, 0) 0%, rgba(200, 242, 75, 0) 100%);
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-rail__item:hover,
.page-faq .faq-rail__item:focus-visible {
  border-left-color: var(--turf);
  background: rgba(200, 242, 75, 0.09);
  transform: translateY(-2px);
}

.page-faq .faq-rail__no {
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--turf);
  letter-spacing: 0.02em;
}

.page-faq .faq-rail__name {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.page-faq .faq-rail__hint {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--grey);
  letter-spacing: 0.04em;
}

.page-faq .faq-rail__foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-rail__foot a {
  color: var(--turf);
  text-underline-offset: 3px;
}

/* ---------- 问题流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  min-width: 0;
}

.page-faq .faq-block {
  padding-top: clamp(6px, 1.4vw, 14px);
  border-top: 2px solid var(--soot);
  scroll-margin-top: 110px;
}

.page-faq .faq-block--grey {
  background: rgba(168, 179, 174, 0.2);
  border-top: 2px solid var(--line);
  padding: var(--faq-block-pad);
}

.page-faq .faq-block--paper {
  background: rgba(107, 74, 47, 0.07);
  border-top: 2px solid var(--brown);
  padding: var(--faq-block-pad);
}

.page-faq .faq-block__head {
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.page-faq .faq-block__head .marker {
  color: var(--shot);
}

.page-faq .faq-block__head h2 {
  margin: 10px 0 0;
  color: var(--soot);
}

.page-faq .faq-block__lede {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--soot);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-q {
  border: 1px solid var(--line);
  background: var(--cream);
  margin-bottom: 10px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .faq-q:hover {
  border-color: var(--turf);
  box-shadow: 4px 4px 0 rgba(78, 107, 96, 0.35);
}

.page-faq .faq-q[open] {
  border-color: var(--shot);
  box-shadow: none;
}

.page-faq .faq-q__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 15px clamp(14px, 2vw, 22px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q__text {
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--soot);
  background-image: linear-gradient(transparent 72%, rgba(200, 242, 75, 0.85) 72%, rgba(200, 242, 75, 0.85) 96%, transparent 96%);
  background-repeat: no-repeat;
  background-size: 0% 100%;
  transition: background-size 0.28s ease;
}

.page-faq .faq-q[open] .faq-q__text,
.page-faq .faq-q__summary:hover .faq-q__text {
  background-size: 100% 100%;
}

.page-faq .faq-q__mark {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  position: relative;
  border: 1px solid var(--line);
  background: rgba(168, 179, 174, 0.28);
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--soot);
  transform: translate(-50%, -50%);
}

.page-faq .faq-q__mark::before {
  width: 10px;
  height: 2px;
}

.page-faq .faq-q__mark::after {
  width: 2px;
  height: 10px;
  transition: opacity 0.2s ease;
}

.page-faq .faq-q[open] .faq-q__mark::after {
  opacity: 0;
}

.page-faq .faq-q__body {
  padding: 2px clamp(14px, 2vw, 22px) 18px;
  border-top: 1px solid var(--line);
  background: rgba(168, 179, 174, 0.22);
  margin-top: 0;
}

.page-faq .faq-q__body p {
  margin: 14px 0 0;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--soot);
  max-width: 66ch;
}

.page-faq .faq-q__body a,
.page-faq .faq-block__lede a,
.page-faq .faq-inline-link a,
.page-faq .faq-note a {
  color: var(--shot);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-q__body a:hover,
.page-faq .faq-inline-link a:hover,
.page-faq .faq-note a:hover {
  color: var(--ink);
  background: var(--turf);
}

/* ---------- 经典版区块 ---------- */
.page-faq .faq-legacy {
  border-left: 3px solid var(--brown);
  padding-left: clamp(10px, 2vw, 20px);
}

/* ---------- 字段表 ---------- */
.page-faq .faq-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-faq .faq-table thead th {
  background: var(--ink);
  color: var(--cream);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-table td {
  color: var(--soot);
}

/* ---------- 提示块 ---------- */
.page-faq .faq-note {
  margin-top: 22px;
  padding: clamp(16px, 2.2vw, 24px);
  background: rgba(168, 179, 174, 0.26);
  border-left: 4px solid var(--shot);
}

.page-faq .faq-note p {
  margin: 0 0 12px;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--soot);
  max-width: 66ch;
}

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

.page-faq .faq-note strong {
  color: var(--ink);
  font-weight: 700;
}

.page-faq .faq-inline-link {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--soot);
}

/* ---------- 排错分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  align-items: start;
}

.page-faq .faq-split__text .subhead {
  margin: 0 0 16px;
  color: var(--soot);
  padding-left: 12px;
  border-left: 4px solid var(--turf);
}

.page-faq .faq-split__text .subhead:not(:first-child) {
  margin-top: 34px;
}

.page-faq .faq-split__media {
  margin: 0;
  border: 1px solid var(--line);
}

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

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

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  padding-bottom: 20px;
}

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

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 42px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

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

.page-faq .faq-step__no {
  position: relative;
  z-index: 1;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
  font-weight: 700;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-step:hover .faq-step__no {
  background: var(--turf);
  border-color: var(--turf);
}

.page-faq .faq-step__body {
  padding-top: 2px;
}

.page-faq .faq-step__title {
  margin: 0 0 6px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

.page-faq .faq-step__body p + p,
.page-faq .faq-step__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--soot);
}

.page-faq .faq-step__title + p {
  margin-top: 0;
}

/* ---------- 设备卡片 ---------- */
.page-faq .faq-devices {
  display: grid;
  gap: 14px;
}

.page-faq .faq-devices__card {
  padding: clamp(16px, 2.2vw, 24px);
  border-left: 4px solid var(--line);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-devices__card:hover {
  border-left-color: var(--turf);
  transform: translateY(-2px);
}

.page-faq .faq-devices__card .marker {
  color: var(--shot);
}

.page-faq .faq-devices__card .subhead {
  margin: 8px 0 10px;
  color: var(--soot);
}

.page-faq .faq-devices__card p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--soot);
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  border-top: 1px solid var(--line);
  padding-block: clamp(34px, 4.6vw, 68px);
}

.page-faq .faq-support__inner {
  display: grid;
  gap: clamp(26px, 3.4vw, 48px);
  align-items: start;
}

.page-faq .faq-support__copy .marker {
  color: var(--turf);
}

.page-faq .faq-support__copy h2 {
  color: var(--cream);
  margin: 12px 0 0;
}

.page-faq .faq-support__copy .lede {
  color: rgba(243, 237, 225, 0.82);
  margin-top: 16px;
  max-width: 50ch;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 22px;
  font-size: 0.93rem;
  line-height: 1.72;
  color: rgba(243, 237, 225, 0.9);
}

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

.page-faq .faq-support__hint {
  margin: 22px 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--grey);
  max-width: 56ch;
}

.page-faq .faq-support__hint a {
  color: var(--turf);
  text-underline-offset: 3px;
}

.page-faq .faq-support__panel {
  background: rgba(243, 237, 225, 0.06);
  border: 1px solid var(--line);
  padding: clamp(20px, 2.6vw, 30px);
}

.page-faq .faq-support__panel .marker {
  color: var(--sub);
}

.page-faq .faq-support__list {
  margin: 16px 0 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-support__row {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-support__row:first-child {
  border-top: 1px solid var(--line);
}

.page-faq .faq-support__row dt {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--grey);
}

.page-faq .faq-support__row dd {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.page-faq .faq-support__row dd a {
  color: var(--cream);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-support__row dd a:hover {
  color: var(--turf);
  border-bottom-color: var(--turf);
}

.page-faq .faq-support__note {
  margin: 18px 0 20px;
  font-size: 0.83rem;
  line-height: 1.75;
  color: var(--grey);
}

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

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-devices {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 58px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

  .page-faq .faq-support__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-rail {
    top: 112px;
  }
}

/* ---------- 窄屏收紧 ---------- */
@media (max-width: 480px) {
  .page-faq .faq-rail__item {
    padding-inline: 10px 8px;
    column-gap: 10px;
  }

  .page-faq .faq-rail__no {
    font-size: 1.25rem;
  }

  .page-faq .faq-hero__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .page-faq .faq-step {
    grid-template-columns: 34px 1fr;
    gap: 12px;
  }

  .page-faq .faq-step__no {
    width: 34px;
    height: 34px;
    font-size: 0.95rem;
  }

  .page-faq .faq-step::before {
    left: 16px;
    top: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__item,
  .page-faq .faq-q,
  .page-faq .faq-q__text,
  .page-faq .faq-devices__card,
  .page-faq .faq-step__no,
  .page-faq .faq-support__row dd a {
    transition: none;
    transform: none;
  }
}