.page-faq {
  --faq-gap: clamp(18px, 3.4vw, 36px);
  --faq-soft: rgba(0, 229, 208, .07);
}

.page-faq .breadcrumbs {
  padding-block: clamp(16px, 3vw, 26px) 0;
  font-size: .82rem;
  color: var(--steel);
}

.page-faq .breadcrumbs a {
  color: var(--mist);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 6vw, 64px) 0 clamp(30px, 6vw, 70px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -60px;
  width: 62%;
  height: 180px;
  background: repeating-linear-gradient(
    100deg,
    rgba(0, 229, 208, .09) 0 2px,
    transparent 2px 22px
  );
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  position: relative;
  margin: .18em 0 0;
  max-width: 16em;
  font-family: var(--font-sans);
  font-weight: 900;
  letter-spacing: .04em;
  line-height: 1.08;
  font-size: clamp(2.2rem, 7vw, 5.1rem);
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin-top: clamp(18px, 3vw, 28px);
  max-width: 34em;
  color: var(--mist);
  font-size: clamp(1rem, 2.1vw, 1.1rem);
  line-height: 1.8;
}

.page-faq .faq-finder {
  position: relative;
  margin-top: clamp(26px, 4.5vw, 46px);
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--cyan);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--ink-800), rgba(23, 63, 95, .55));
  box-shadow: var(--shadow-deep);
}

.page-faq .faq-finder__label {
  margin: 0 0 14px;
  font-size: .9rem;
  color: var(--mist);
  letter-spacing: .02em;
}

.page-faq .faq-finder__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-finder__list a {
  display: inline-block;
  padding: 8px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: .88rem;
  color: var(--paper);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-finder__list a:hover,
.page-faq .faq-finder__list a:focus-visible {
  border-color: var(--cyan-line);
  background: var(--faq-soft);
  color: var(--cyan);
}

.page-faq .faq-finder__meta {
  margin: 16px 0 0;
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--steel);
}

/* ---------- 章节头复用微调 ---------- */
.page-faq .section-head__index {
  color: var(--amber);
}

.page-faq .section-head__title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  letter-spacing: .02em;
}

/* ---------- 三步开始 ---------- */
.page-faq .faq-start__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(22px, 4vw, 38px);
}

.page-faq .faq-start__intro {
  max-width: 34em;
  color: var(--mist);
  line-height: 1.8;
}

.page-faq .step-list {
  margin: clamp(22px, 3.5vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: clamp(16px, 2.6vw, 24px) 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .step__num {
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--amber);
  letter-spacing: .06em;
}

.page-faq .step__title {
  margin: 0 0 .35em;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .02em;
}

.page-faq .step__body p {
  margin: 0;
  max-width: 32em;
  color: var(--mist);
  font-size: .95rem;
  line-height: 1.78;
}

.page-faq .faq-start__note {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 34em;
  font-size: .9rem;
  color: var(--steel);
  line-height: 1.75;
}

.page-faq .link-cyan {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-faq .link-cyan:hover,
.page-faq .link-cyan:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--steel);
}

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

/* ---------- 问答 ---------- */
.page-faq .faq-qa__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  margin-top: clamp(22px, 4vw, 36px);
}

.page-faq .faq-toc {
  padding: 16px 18px;
  border-left: 2px solid var(--cyan-line);
  background: linear-gradient(90deg, var(--faq-soft), transparent 85%);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--steel);
}

.page-faq .faq-toc__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__list a {
  display: block;
  padding: 7px 0 7px 14px;
  position: relative;
  font-size: .92rem;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-toc__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-radius: 50%;
  background: var(--steel);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

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

.page-faq .faq-toc__list a:hover::before,
.page-faq .faq-toc__list a:focus-visible::before {
  background: var(--cyan);
  transform: scale(1.3);
}

.page-faq .faq-group {
  scroll-margin-top: 90px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 6px;
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .faq-group__title .mono {
  font-size: .76rem;
  padding: 2px 8px;
  border: 1px solid var(--amber-line);
  border-radius: var(--r-sm);
  color: var(--amber);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--cyan);
  line-height: 1;
}

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

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-item__body {
  padding: 0 0 18px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 34em;
  color: var(--mist);
  font-size: .94rem;
  line-height: 1.82;
}

/* ---------- 故障排查 ---------- */
.page-faq .faq-trouble__grid {
  display: grid;
  gap: clamp(26px, 4.5vw, 48px);
  margin-top: clamp(22px, 4vw, 36px);
}

.page-faq .trouble-flow {
  position: relative;
}

.page-faq .trouble-node {
  position: relative;
  padding: 0 0 clamp(22px, 3.4vw, 30px) 36px;
}

.page-faq .trouble-node::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 106, 43, .16);
}

.page-faq .trouble-node::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 26px;
  bottom: 0;
  width: 1px;
  background: var(--line-strong);
}

.page-faq .trouble-node--end::after {
  display: none;
}

.page-faq .trouble-node--end::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 208, .16);
}

.page-faq .trouble-node__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 .3em;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--paper);
}

.page-faq .trouble-node__title .mono {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--steel);
}

.page-faq .trouble-node p {
  margin: 0;
  max-width: 32em;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.78;
}

/* ---------- 检索技巧 ---------- */
.page-faq .faq-lookup__intro {
  max-width: 36em;
  margin: clamp(18px, 3vw, 26px) 0 0;
  color: var(--mist);
  line-height: 1.8;
}

.page-faq .lookup-list {
  margin: clamp(22px, 3.5vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.page-faq .lookup {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 6px 16px;
  padding: clamp(15px, 2.4vw, 22px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .lookup__index {
  grid-row: span 2;
  font-size: .86rem;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: .25em;
}

.page-faq .lookup__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .lookup p {
  margin: 0;
  max-width: 32em;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.78;
}

.page-faq .faq-lookup__tip {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 36em;
  padding-left: 16px;
  border-left: 2px solid var(--cyan-line);
  color: var(--steel);
  font-size: .9rem;
  line-height: 1.8;
}

/* ---------- 仍需帮助 ---------- */
.page-faq .faq-help__panel {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding: clamp(24px, 4.4vw, 46px);
  border-radius: var(--r-lg);
  background: var(--paper);
  color: var(--ink-900);
}

.page-faq .faq-help__panel .eyebrow {
  margin: 0 0 10px;
  color: var(--ink-700);
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-size: clamp(1.42rem, 4vw, 2.2rem);
  font-weight: 900;
  letter-spacing: .02em;
  line-height: 1.25;
  color: var(--ink-900);
}

.page-faq .faq-help__text {
  margin: 0 0 22px;
  max-width: 34em;
  font-size: .95rem;
  line-height: 1.82;
  color: #2a3d52;
}

.page-faq .faq-help__panel .btn {
  background: var(--ink-800);
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--ink-800);
}

.page-faq .faq-help__panel .btn:hover,
.page-faq .faq-help__panel .btn:focus-visible {
  background: var(--ink-700);
  border-color: var(--ink-700);
  color: var(--cyan);
}

.page-faq .faq-help__meta {
  display: grid;
  gap: 14px;
  margin: 0;
  align-content: start;
  border-top: 1px solid rgba(10, 22, 38, .16);
  padding-top: 18px;
}

.page-faq .faq-help__meta > div {
  display: grid;
  gap: 3px;
}

.page-faq .faq-help__meta dt {
  color: var(--ink-700);
}

.page-faq .faq-help__meta dd {
  margin: 0;
  font-size: .95rem;
  color: var(--ink-900);
  word-break: break-word;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .lookup {
    grid-template-columns: 56px minmax(0, 180px) minmax(0, 1fr);
    align-items: baseline;
  }

  .page-faq .lookup__index {
    grid-row: auto;
  }

  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-faq .faq-help__meta {
    border-top: 0;
    border-left: 1px solid rgba(10, 22, 38, .16);
    padding-top: 0;
    padding-left: clamp(18px, 3vw, 30px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-qa__grid {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-start__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-faq .faq-figure--start {
    margin-top: 6px;
  }

  .page-faq .faq-trouble__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-faq .faq-figure--trouble {
    position: sticky;
    top: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-finder__list a,
  .page-faq .faq-toc__list a,
  .page-faq .faq-toc__list a::before,
  .page-faq .faq-item summary {
    transition: none;
  }
}
<<<END>>>