.page-faq {
  --faq-panel: rgba(16, 32, 74, 0.5);
  --faq-panel-hi: rgba(16, 32, 74, 0.88);
  --faq-rule: var(--line-soft);
  --faq-rule-faint: var(--line-faint);
  --faq-ink: #20242E;
  --faq-ink-soft: #555A66;
  --faq-ink-faint: #7B808B;
  overflow-x: clip;
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  position: relative;
  padding: clamp(22px, 4.4vw, 52px) 0 clamp(20px, 3.4vw, 36px);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-intro::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--faq-rule-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-rule-faint) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.55;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), transparent 88%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), transparent 88%);
}

.page-faq .faq-intro > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-intro h1 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-40);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 22ch;
}

.page-faq .faq-intro__lede {
  margin: 0 0 20px;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--paper-82);
}

.page-faq .faq-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-faq .faq-intro__meta b {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: var(--fs-14);
  color: var(--paper);
}

/* ---------- 症状分类 ---------- */
.page-faq .faq-symptoms {
  padding: clamp(22px, 3.6vw, 42px) 0 clamp(14px, 2.4vw, 26px);
}

.page-faq .faq-symptoms__head {
  display: grid;
  gap: 6px;
  margin-bottom: 18px;
  max-width: 62ch;
}

.page-faq .faq-symptoms__head h2,
.page-faq .faq-qa__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-28);
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-symptoms__head p,
.page-faq .faq-qa__head p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .faq-symptom-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  overflow: visible;
}

.page-faq .faq-cluster {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  display: grid;
  gap: 6px;
  width: 100%;
  padding: 16px 18px 18px 22px;
  background: var(--faq-panel);
  border: 1px solid var(--faq-rule);
  border-left-width: 3px;
  border-left-color: var(--line);
  color: var(--paper);
  text-align: left;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background-color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-faq .faq-cluster--data { border-left-color: var(--cyan); }
.page-faq .faq-cluster--load { border-left-color: var(--moss); }
.page-faq .faq-cluster--filter { border-left-color: var(--clay); }
.page-faq .faq-cluster--render { border-left-color: var(--orange); }

.page-faq .faq-cluster:hover {
  background: var(--faq-panel-hi);
}

.page-faq .faq-cluster[aria-pressed="true"] {
  background: var(--cyan-wash);
  border-color: var(--cyan);
}

.page-faq .faq-cluster__no {
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--stone);
}

.page-faq .faq-cluster__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-20);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-cluster__desc {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--paper-64);
}

.page-faq .faq-cluster:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 流程图 ---------- */
.page-faq .faq-flow {
  margin: clamp(18px, 3vw, 30px) 0 0;
  border: 1px solid var(--faq-rule);
  background: var(--ink-800);
}

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

.page-faq .faq-flow figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--faq-rule);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-qa {
  padding: clamp(24px, 4vw, 48px) 0 clamp(30px, 5vw, 60px);
}

.page-faq .faq-qa__head {
  display: grid;
  gap: 6px;
  margin-bottom: 22px;
  max-width: 62ch;
}

.page-faq .faq-block {
  margin: 0 0 26px;
}

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

.page-faq .faq-block__head {
  display: grid;
  gap: 4px;
  padding-bottom: 10px;
}

.page-faq .faq-block__head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-20);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--faq-rule);
  background: var(--faq-panel);
  transition: background-color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: -1px;
}

.page-faq .faq-item[open] {
  background: var(--faq-panel-hi);
  border-color: var(--line);
  z-index: 1;
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  font-family: var(--font-data);
  font-size: var(--fs-16);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--stone);
  padding-top: 3px;
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  line-height: 1.55;
  color: var(--paper);
  transition: color 0.15s var(--ease);
}

.page-faq .faq-item > summary:hover .faq-item__q,
.page-faq .faq-item[open] > summary .faq-item__q {
  color: var(--cyan);
}

.page-faq .faq-item__panel {
  padding: 12px 16px 20px;
  border-top: 1px solid var(--faq-rule-faint);
}

.page-faq .faq-item__panel p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--paper-82);
}

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

.page-faq .faq-item__panel strong {
  font-family: var(--font-data);
  font-weight: 500;
  color: var(--paper);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--paper-82);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .faq-inline-media {
  margin: 16px 0 0;
  max-width: 620px;
  border: 1px solid var(--faq-rule);
  background: var(--ink-900);
}

.page-faq .faq-inline-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ---------- 页尾帮助区 ---------- */
.page-faq .faq-help {
  position: relative;
  background: var(--paper);
  color: var(--faq-ink);
  padding: clamp(44px, 6vw, 76px) 0 clamp(30px, 4vw, 52px);
  clip-path: polygon(0 28px, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-help__inner {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-faq .faq-help .annotation {
  color: var(--faq-ink-faint);
}

.page-faq .faq-help h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-28);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--faq-ink);
}

.page-faq .faq-help__brief > p {
  margin: 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0 0 0 16px;
  border-left: 3px solid var(--clay);
  display: grid;
  gap: 8px;
}

.page-faq .faq-help__list li {
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--faq-ink-soft);
}

.page-faq .faq-help__routes {
  margin-top: 18px !important;
  font-size: var(--fs-14) !important;
  color: var(--faq-ink-faint) !important;
}

.page-faq .faq-help__contact {
  align-self: start;
  padding: 18px 20px 20px;
  background: rgba(32, 36, 46, 0.055);
  border: 1px solid rgba(32, 36, 46, 0.16);
}

.page-faq .faq-help__label {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faq-ink-faint);
}

.page-faq .faq-help__value {
  margin: 4px 0 14px;
  font-family: var(--font-data);
  font-size: var(--fs-16);
  line-height: 1.5;
  color: var(--faq-ink);
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 6px 0 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--faq-ink-soft);
}

/* ---------- 链接与动效 ---------- */
.page-faq a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}

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

.page-faq .faq-help a:hover,
.page-faq .faq-help a:focus-visible {
  color: var(--faq-ink);
  text-decoration-color: var(--clay);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-symptom-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    align-items: start;
  }

  .page-faq .faq-cluster:nth-child(2),
  .page-faq .faq-cluster:nth-child(3) {
    padding-bottom: 32px;
  }

  .page-faq .faq-cluster:nth-child(3) {
    padding-left: 32px;
  }

  .page-faq .faq-item > summary {
    padding: 16px 20px;
  }

  .page-faq .faq-item__panel {
    padding: 12px 20px 22px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-symptom-track {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

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