.page-faq {
  --faq-index-w: 208px;
  --faq-gap: clamp(24px, 3.4vw, 52px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(22px, 3.6vw, 48px) 0 clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--edge);
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5.4vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__sub {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__side-title {
  margin: 0 0 10px;
  color: var(--graphite);
}

.page-faq .quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .quick-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 13px 15px;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 2px;
  color: var(--ink);
  text-decoration: none;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .quick-list a:hover,
.page-faq .quick-list a:focus-visible {
  transform: translateY(-6px);
  border-color: var(--gold);
  box-shadow: 4px 6px 0 rgba(200, 160, 60, 0.18);
}

.page-faq .quick-list__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--teal);
  border: 1px solid var(--cabbage);
  border-radius: 2px;
  padding: 2px 6px;
}

.page-faq .quick-list__t {
  font-size: 14px;
  line-height: 1.45;
}

.page-faq .quick-list__go {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 14px;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding: clamp(26px, 4vw, 46px) 0 clamp(40px, 6vw, 76px);
}

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

/* ---------- 章节索引 ---------- */
.page-faq .faq-index {
  margin-bottom: 22px;
}

.page-faq .faq-index__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--graphite);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 7px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 2px;
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--gold);
  background: linear-gradient(180deg, #fffdf6, #f7edd2);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--graphite);
}

.page-faq .faq-index__note {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--graphite);
}

/* ---------- 章节 ---------- */
.page-faq .faq-chapter {
  padding-top: clamp(24px, 3.4vw, 40px);
  margin-top: clamp(24px, 3.4vw, 40px);
  border-top: 1px solid var(--edge);
}

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

.page-faq .faq-chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin-bottom: 18px;
}

.page-faq .faq-chapter__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-faq .faq-chapter__head h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.6vw, 29px);
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .faq-chapter__lede {
  margin: 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  position: relative;
  margin-bottom: 10px;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 2px;
  transition: border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--gold);
  box-shadow: 4px 4px 0 rgba(224, 214, 192, 0.75);
}

.page-faq .qa[open]::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 3px;
  background: linear-gradient(180deg, var(--gold-hi), var(--gold));
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 11px;
  padding: 14px 15px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q h3 {
  flex: 1 1 auto;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .qa__chev {
  position: relative;
  flex: 0 0 auto;
  align-self: center;
  width: 16px;
  height: 16px;
}

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

.page-faq .qa__chev::before {
  width: 12px;
  height: 1.5px;
}

.page-faq .qa__chev::after {
  width: 1.5px;
  height: 12px;
  transition: transform 180ms var(--ease), opacity 180ms var(--ease);
}

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

.page-faq .qa__a {
  padding: 14px 15px 18px;
  border-top: 1px dashed var(--edge);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
}

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

.page-faq .qa__a a {
  color: var(--teal);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 3px;
}

.page-faq .qa__a--split {
  display: grid;
  gap: 18px;
  align-items: start;
}

/* ---------- 图片 ---------- */
.page-faq figure {
  margin: 0;
}

.page-faq .faq-figure-wide {
  margin: 0 0 16px;
}

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

.page-faq .figure-frame__caption {
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--graphite);
}

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

.page-faq .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 16px;
}

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

.page-faq .steps__item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 38px;
  bottom: 1px;
  border-left: 1px dashed var(--cabbage);
  opacity: 0.6;
}

.page-faq .steps__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--teal);
  background: var(--paper);
  border: 1px solid var(--cabbage);
  border-radius: 50%;
}

.page-faq .steps__body h4 {
  margin: 5px 0 3px;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .steps__body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--graphite);
}

/* ---------- 排查表 ---------- */
.page-faq .trouble-wrap {
  margin-bottom: 18px;
  overflow-x: auto;
  border: 1px solid var(--edge);
  background: var(--card);
}

.page-faq .trouble {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-faq .trouble th {
  padding: 11px 13px;
  text-align: left;
  background: var(--ink);
  color: var(--gold-hi);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-faq .trouble td {
  padding: 13px;
  vertical-align: top;
  border-top: 1px solid var(--edge);
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .trouble tbody tr:nth-child(even) td {
  background: rgba(224, 214, 192, 0.22);
}

.page-faq .symptom {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: #08201a;
  background: var(--cabbage);
  border-radius: 2px;
}

.page-faq .trouble__ol {
  margin: 0;
  padding-left: 17px;
  font-size: 13px;
  line-height: 1.68;
  color: var(--graphite);
}

.page-faq .trouble__ol li {
  margin-bottom: 3px;
}

.page-faq .trouble__ol li:last-child {
  margin-bottom: 0;
}

/* ---------- 支持区 ---------- */
.page-faq .support-card {
  position: relative;
  margin-top: 22px;
  padding: clamp(18px, 3vw, 28px);
  background: var(--ink);
  border: 1px solid var(--gold);
  border-radius: 2px;
  color: var(--paper);
}

.page-faq .support-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
  color: var(--card);
}

.page-faq .support-card__body {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(248, 242, 228, 0.86);
}

.page-faq .support-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
}

.page-faq .support-card__links a {
  font-size: 13.5px;
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 204, 99, 0.5);
  padding-bottom: 2px;
}

.page-faq .support-card__links a:hover,
.page-faq .support-card__links a:focus-visible {
  border-bottom-color: var(--gold-hi);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .qa__q {
    padding: 16px 18px;
  }

  .page-faq .qa__q h3 {
    font-size: 16.5px;
  }

  .page-faq .qa__a {
    padding: 16px 18px 20px;
  }

  .page-faq .qa__a--split {
    grid-template-columns: minmax(0, 1fr) 232px;
    gap: 22px;
  }

  .page-faq .qa__a p {
    font-size: 15px;
  }

  .page-faq .steps__body p {
    font-size: 14px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body {
    display: grid;
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--cmd-h) + 24px);
    margin-bottom: 0;
    padding-top: 10px;
    border-top: 2px solid var(--ink);
  }

  .page-faq .faq-index__label {
    margin-bottom: 10px;
  }

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

  .page-faq .faq-index__list a {
    display: flex;
    white-space: normal;
    padding: 9px 8px 9px 12px;
    border: 0;
    border-left: 2px solid var(--edge);
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-left-color: var(--gold);
    background: var(--card);
    background-image: none;
  }

  .page-faq .faq-index__note {
    margin-top: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-list a:hover,
  .page-faq .quick-list a:focus-visible {
    transform: none;
  }

  .page-faq .quick-list a,
  .page-faq .qa,
  .page-faq .qa__chev::after,
  .page-faq .faq-index__list a {
    transition: none;
  }
}
<<<END>>>