.page-faq {
  --faq-line: rgba(44, 75, 140, .55);
  --faq-line-strong: rgba(44, 75, 140, .9);
  --faq-card: rgba(7, 20, 51, .55);
  --faq-gap: clamp(18px, 3vw, 32px);
  --faq-radius: 14px;
  padding: clamp(16px, 3.4vw, 32px) 0 clamp(64px, 9vw, 116px);
  color: var(--text-bright);
  background:
    radial-gradient(90% 55% at 88% 0%, rgba(51, 242, 208, .10), transparent 62%),
    radial-gradient(70% 45% at 0% 6%, rgba(255, 138, 60, .07), transparent 58%);
}

.page-faq h2 {
  margin: 0;
  font-size: clamp(21px, 2.8vw, 30px);
  font-weight: 900;
  letter-spacing: .02em;
  line-height: 1.25;
}

.page-faq .crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.6vw, 40px);
  padding-bottom: clamp(28px, 4.6vw, 54px);
}

.page-faq .faq-hero__lead h1 {
  margin: 12px 0 0;
  font-size: clamp(29px, 5vw, 56px);
  font-weight: 900;
  letter-spacing: .02em;
  line-height: 1.16;
  max-width: 20ch;
}

.page-faq .faq-hero__lead .lede {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 62ch;
  color: var(--text-muted);
  font-size: clamp(15.5px, 1.4vw, 17px);
  line-height: 1.85;
}

.page-faq .faq-searchbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding: 13px 18px;
  border: 1px solid var(--faq-line-strong);
  border-radius: 999px;
  background: var(--faq-card);
  font-size: 14.5px;
  line-height: 1.6;
}

.page-faq .faq-searchbar__label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--cyan);
  padding-right: 14px;
  border-right: 1px solid var(--faq-line-strong);
}

.page-faq .faq-searchbar__terms {
  color: var(--text-muted);
}

.page-faq .faq-support-card {
  display: grid;
  gap: 16px;
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--faq-radius);
}

.page-faq .faq-support-card__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 15.5px;
  line-height: 1.6;
}

.page-faq .faq-support-card__stats li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(44, 75, 140, .4);
}

.page-faq .faq-support-card__stats li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-support-card__stats .num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .02em;
}

.page-faq .faq-support-card__note {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 高频速查 ---------- */
.page-faq .faq-quick {
  padding: clamp(26px, 4vw, 42px) 0 clamp(26px, 3.6vw, 40px);
  border-top: 1px solid var(--faq-line-strong);
}

.page-faq .faq-quick__head {
  display: grid;
  gap: 10px;
  max-width: 56ch;
}

.page-faq .faq-quick__grid {
  list-style: none;
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-chip {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  border: 1px solid var(--faq-line-strong);
  border-radius: 12px;
  background: var(--faq-card);
  color: var(--text-bright);
  text-decoration: none;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--cyan);
  background: var(--cyan-08);
  outline: none;
}

.page-faq .faq-chip:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-faq .faq-chip__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--text-muted);
  transition: color 200ms var(--ease);
}

.page-faq .faq-chip:hover .faq-chip__num,
.page-faq .faq-chip:focus-visible .faq-chip__num {
  color: var(--cyan);
}

.page-faq .faq-chip__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15.5px;
  line-height: 1.5;
}

.page-faq .faq-chip__go {
  flex: 0 0 auto;
  color: var(--text-muted);
  transition: color 200ms var(--ease), transform 200ms var(--ease);
}

.page-faq .faq-chip:hover .faq-chip__go,
.page-faq .faq-chip:focus-visible .faq-chip__go {
  color: var(--orange);
  transform: translateX(2px);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(26px, 4vw, 44px);
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--faq-line-strong);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure--narrow {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-figure--narrow img {
  aspect-ratio: 10 / 7;
}

.page-faq .faq-figure .media-frame__caption {
  background: rgba(7, 20, 51, .82);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
}

/* ---------- 双速布局 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 44px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--faq-line-strong);
}

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

.page-faq .faq-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-index__list a {
  display: block;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-left: 2px solid transparent;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 14.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--text-bright);
  border-color: var(--faq-line-strong);
  border-left-color: var(--cyan);
  background: var(--cyan-08);
  outline: none;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding: clamp(28px, 4vw, 46px) 0;
  border-bottom: 1px solid var(--faq-line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

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

.page-faq .faq-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-section__head .section-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-faq .faq-section__head .faq-section__lede {
  flex-basis: 100%;
  margin: 0;
  max-width: 64ch;
  color: var(--text-muted);
  font-size: 15.5px;
  line-height: 1.8;
}

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 6px 14px;
  padding: clamp(16px, 2vw, 20px) 0;
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--cyan);
  padding-top: 5px;
}

.page-faq .faq-step__body h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: .01em;
  line-height: 1.55;
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 62ch;
  color: var(--text-muted);
  font-size: 15.5px;
  line-height: 1.85;
}

/* ---------- 现象卡 ---------- */
.page-faq .faq-symptoms {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-symptom {
  padding: clamp(16px, 2vw, 22px);
  border: 1px solid var(--faq-line-strong);
  border-radius: 12px;
  background: var(--faq-card);
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-symptom h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: .01em;
}

.page-faq .faq-symptom p {
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-symptom .status-tag {
  justify-self: start;
  margin-top: 2px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-qa {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .qa {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa:first-of-type {
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 180ms var(--ease);
}

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

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  background: var(--cyan-08);
  outline: none;
}

.page-faq .qa > summary:focus-visible {
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-faq .qa__num {
  flex: 0 0 auto;
  width: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .qa__q {
  flex: 1 1 200px;
  min-width: 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
}

.page-faq .qa__toggle {
  flex: 0 0 auto;
  position: relative;
  width: 20px;
  height: 20px;
  margin-left: auto;
  border: 1px solid var(--faq-line-strong);
  border-radius: 50%;
  transition: border-color 180ms var(--ease);
}

.page-faq .qa__toggle::before,
.page-faq .qa__toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--text-muted);
  transform: translate(-50%, -50%);
  transition: opacity 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .qa__toggle::before {
  width: 9px;
  height: 1.5px;
}

.page-faq .qa__toggle::after {
  width: 1.5px;
  height: 9px;
}

.page-faq .qa[open] .qa__toggle {
  border-color: var(--cyan);
}

.page-faq .qa[open] .qa__toggle::before {
  background: var(--cyan);
}

.page-faq .qa[open] .qa__toggle::after {
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 4px 20px;
  color: var(--text-muted);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .qa__a p {
  margin: 0 0 .8em;
  max-width: 64ch;
}

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

.page-faq .qa__a ul,
.page-faq .qa__a ol {
  margin: 0 0 .8em;
  padding-left: 1.2em;
  max-width: 64ch;
}

.page-faq .qa__a li {
  margin-bottom: .35em;
}

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 208, .42);
  transition: border-bottom-color 180ms var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
  padding: clamp(20px, 2.8vw, 32px);
  border-radius: var(--faq-radius);
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  padding-left: 18px;
  position: relative;
}

.page-faq .faq-contact__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-contact__list--plain li {
  padding-left: 0;
}

.page-faq .faq-contact__list--plain li::before {
  display: none;
}

.page-faq .faq-contact__list--plain li {
  display: grid;
  gap: 4px;
}

.page-faq .faq-contact__line {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-faq .faq-contact .contact-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--text-muted);
}

.page-faq .faq-contact .contact-value {
  color: var(--text-bright);
  font-size: 15px;
  word-break: break-word;
}

.page-faq .faq-contact .copy-btn {
  padding: 5px 12px;
  border: 1px solid var(--faq-line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-contact .copy-btn:hover,
.page-faq .faq-contact .copy-btn:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-08);
  outline: none;
}

.page-faq .faq-contact .copy-btn[data-copied] {
  border-color: var(--green);
  color: var(--green);
  background: rgba(70, 211, 154, .1);
}

.page-faq .faq-closing {
  margin-top: clamp(20px, 2.6vw, 28px);
  padding-left: 16px;
  border-left: 2px solid var(--orange);
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-closing p {
  margin: 0 0 .7em;
  max-width: 64ch;
}

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

.page-faq .faq-closing a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 208, .42);
}

.page-faq .faq-closing a:hover,
.page-faq .faq-closing a:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 自适应 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-faq .qa__a {
    padding-left: 42px;
  }

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

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

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

@media (min-width: 1040px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 210px) minmax(0, 1fr);
    gap: clamp(36px, 4.6vw, 68px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    align-self: start;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-index__list a {
    border-color: transparent;
    border-left: 2px solid var(--faq-line);
    border-radius: 0 8px 8px 0;
    white-space: normal;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-color: transparent;
    border-left-color: var(--cyan);
    background: var(--cyan-08);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-chip__num,
  .page-faq .faq-chip__go,
  .page-faq .qa__toggle,
  .page-faq .qa__toggle::before,
  .page-faq .qa__toggle::after,
  .page-faq .faq-index__list a {
    transition: color 180ms linear, border-color 180ms linear, background-color 180ms linear;
  }

  .page-faq .faq-chip:hover .faq-chip__go,
  .page-faq .faq-chip:focus-visible .faq-chip__go {
    transform: none;
  }
}
<<<END>>>