.page-faq {
  --faq-shadow: 4px 4px 0 var(--black);
  --faq-gap: clamp(16px, 3vw, 26px);
  --faq-line: 2px solid var(--black);
  background: var(--ice);
  color: var(--ink);
  font-family: var(--font-sans);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .page-head {
  padding: clamp(24px, 5vw, 44px) 0 clamp(20px, 3vw, 30px);
  max-width: 860px;
}

.page-faq .page-head h1 {
  font-size: clamp(28px, 5vw, 46px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 10px 0 14px;
  color: var(--ink);
}

.page-faq .page-head .lede {
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.75;
  color: var(--steel);
  max-width: 74ch;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0;
}

/* ---------- 诊断分类区 ---------- */
.page-faq .triage {
  border-top: var(--faq-line);
  padding-top: clamp(20px, 3vw, 30px);
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-faq .triage-head h2 {
  font-size: clamp(20px, 3vw, 28px);
  margin: 0 0 8px;
}

.page-faq .triage-head p {
  margin: 0 0 clamp(16px, 3vw, 24px);
  color: var(--slate);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .triage-list {
  list-style: none;
  margin: 0 0 clamp(22px, 4vw, 34px);
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .triage-card {
  background: var(--white);
  border: var(--faq-line);
  box-shadow: var(--faq-shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .triage-card:hover,
.page-faq .triage-card:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--black);
}

.page-faq .triage-link {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no name"
    "no symptom"
    "no go";
  column-gap: 12px;
  row-gap: 4px;
  padding: 16px 16px 14px;
  text-decoration: none;
  color: inherit;
}

.page-faq .triage-link:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 2px;
}

.page-faq .triage-no {
  grid-area: no;
  align-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--ink);
  color: var(--cyan);
  font-size: 15px;
  font-weight: 700;
  border: 2px solid var(--black);
}

.page-faq .triage-name {
  grid-area: name;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .triage-symptom {
  grid-area: symptom;
  font-size: 14px;
  line-height: 1.65;
  color: var(--slate);
}

.page-faq .triage-go {
  grid-area: go;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--teal);
  text-decoration: underline dashed;
  text-underline-offset: 4px;
}

.page-faq .diagnose-figure {
  margin: 0;
}

.page-faq .media-frame {
  border: var(--faq-line);
  background: var(--fog);
  box-shadow: var(--faq-shadow);
  overflow: hidden;
}

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

.page-faq .media-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
  font-family: var(--font-mono);
}

/* ---------- 主双栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 36px);
  align-items: start;
}

.page-faq .faq-nav {
  background: var(--fog);
  border: var(--faq-line);
  padding: 16px;
}

.page-faq .faq-nav-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-faq .faq-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-faq .faq-nav-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  background: var(--white);
  border: 2px solid var(--steel);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  line-height: 1.4;
}

.page-faq .faq-nav-list a:hover,
.page-faq .faq-nav-list a:focus-visible {
  background: var(--cyan);
  border-color: var(--black);
  color: var(--ink);
}

.page-faq .faq-nav-no {
  color: var(--teal);
  font-size: 12px;
}

.page-faq .faq-nav-list a:hover .faq-nav-no {
  color: var(--ink);
}

/* ---------- 章节 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 108px;
  border-top: 2px solid var(--steel);
  padding-top: clamp(18px, 3vw, 26px);
  min-width: 0;
}

.page-faq .section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  margin-bottom: clamp(16px, 3vw, 24px);
}

.page-faq .index-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 6px 8px;
  background: var(--ink);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  border: 2px solid var(--black);
}

.page-faq .section-head-text {
  min-width: 0;
}

.page-faq .section-head-text h2 {
  font-size: clamp(20px, 3vw, 27px);
  line-height: 1.35;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-faq .section-head-text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
  max-width: 70ch;
}

.page-faq .step-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .step-card {
  background: var(--white);
  border: var(--faq-line);
  box-shadow: var(--faq-shadow);
  padding: 18px 16px 20px;
  transition: transform 0.18s ease;
  min-width: 0;
}

.page-faq .step-card:hover {
  transform: translateY(-3px);
}

.page-faq .step-no {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-faq .step-card h3 {
  font-size: 17px;
  line-height: 1.45;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-faq .step-card > p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .step-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .step-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  border: 1.5px solid var(--black);
}

.page-faq .step-card .mono,
.page-faq .contact-line .mono,
.page-faq .section-tail .mono {
  font-family: var(--font-mono);
  background: var(--mint);
  padding: 1px 5px;
  border: 1px solid var(--black);
  font-size: 0.92em;
}

.page-faq .section-tail {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
  border-left: 4px solid var(--amber);
  padding-left: 12px;
}

.page-faq .section-tail a {
  color: var(--teal);
  text-decoration: underline dashed;
  text-underline-offset: 4px;
}

.page-faq .section-tail a:hover {
  color: var(--ink);
}

/* ---------- 检索章节图 ---------- */
.page-faq .search-figure {
  margin: 0 0 clamp(16px, 3vw, 22px);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-fold {
  margin-top: var(--faq-gap);
  background: var(--white);
  border: var(--faq-line);
  box-shadow: var(--faq-shadow);
}

.page-faq .qa-fold > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  background: var(--mint);
}

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

.page-faq .qa-fold > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--teal);
  flex: none;
}

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

.page-faq .qa-fold > summary:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: -3px;
}

.page-faq .qa-fold-body {
  padding: 16px;
  border-top: var(--faq-line);
}

.page-faq .qa-fold-body p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 联系区块 ---------- */
.page-faq .contact-strip {
  background: var(--ink);
  color: var(--ice);
  border: var(--faq-line);
  box-shadow: 6px 6px 0 var(--cyan);
  padding: clamp(18px, 4vw, 28px);
  display: grid;
  gap: 20px;
}

.page-faq .contact-strip-kicker {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.1em;
}

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

.page-faq .prep-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ice);
}

.page-faq .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  background: var(--amber);
  border: 1.5px solid var(--ice);
}

.page-faq .prep-list strong {
  color: var(--cyan);
}

.page-faq .contact-line {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

.page-faq .contact-line .mono {
  background: transparent;
  border-color: var(--steel);
  color: var(--white);
}

.page-faq .contact-strip-action {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .faq-section--last {
  border-top-color: var(--black);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .triage-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .triage-link {
    padding: 18px 18px 16px;
  }

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

  .page-faq .contact-strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-nav-list {
    grid-template-columns: 1fr;
  }

  .page-faq .triage-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .triage-link {
    grid-template-areas:
      "no name"
      "symptom symptom"
      "go go";
    grid-template-columns: auto 1fr;
    row-gap: 8px;
  }

  .page-faq .triage-symptom {
    min-height: 68px;
  }

  .page-faq .contact-strip-action {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .triage-card,
  .page-faq .step-card {
    transition: none;
  }

  .page-faq .triage-card:hover,
  .page-faq .triage-card:focus-within,
  .page-faq .step-card:hover {
    transform: none;
  }
}
<<<END>>>