.page-faq {
  --faq-gap: clamp(20px, 3.4vw, 40px);
  --faq-line-soft: rgba(243, 232, 206, 0.1);
  background: var(--ink-900);
  color: var(--paper);
}

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

/* ── 面包屑 ───────────────────────────── */
.page-faq .faq-topbar {
  padding-top: calc(var(--header-h) + 14px);
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}

.page-faq .breadcrumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  text-decoration: underline;
}

.page-faq .crumb-sep {
  color: var(--line);
}

/* ── 首屏 ─────────────────────────────── */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px) 0 clamp(34px, 6vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 86%;
  background:
    radial-gradient(46% 62% at 16% 24%, rgba(79, 227, 210, 0.18), transparent 68%),
    radial-gradient(40% 56% at 84% 6%, rgba(154, 107, 255, 0.2), transparent 70%),
    radial-gradient(52% 60% at 58% 100%, rgba(255, 138, 61, 0.1), transparent 74%);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 46ch;
  color: var(--paper);
  font-family: var(--font-serif);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  background: rgba(79, 227, 210, 0.06);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-jump a:hover {
  background: rgba(79, 227, 210, 0.16);
  border-color: var(--cyan);
}

.page-faq .faq-collect {
  margin-top: 22px;
}

/* ── 症状分类 ─────────────────────────── */
.page-faq .faq-symptoms {
  padding: clamp(36px, 6vw, 76px) 0;
  background: var(--ink-800);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-split {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-symptoms-main .prose {
  margin-top: 14px;
  color: var(--muted);
}

.page-faq .faq-symptom-list {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-symptom {
  padding: 20px 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-symptom:last-child {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-symptom-sign {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-symptom-cause {
  margin: 8px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-symptom-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .faq-symptom-link::after {
  content: "→";
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-symptom-link:hover::after {
  transform: translateX(3px);
}

.page-faq .faq-symptoms-figure {
  margin: 30px 0 0;
}

.page-faq .faq-symptoms-figure img,
.page-faq .faq-prepare-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--felt);
}

.page-faq .media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ── 流程带 ───────────────────────────── */
.page-faq .faq-flow {
  padding: clamp(30px, 5vw, 58px) 0;
  background: linear-gradient(180deg, var(--felt) 0%, var(--ink-800) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-flow-track {
  display: grid;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-flow-num {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--ink-900);
  background: var(--gold);
  border-radius: var(--radius);
}

.page-faq .faq-flow-step:nth-child(2) .faq-flow-num {
  background: var(--cyan);
}

.page-faq .faq-flow-step:nth-child(3) .faq-flow-num {
  background: var(--orange);
}

.page-faq .faq-flow-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-flow-text {
  margin: 8px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-flow-arrow {
  display: none;
  color: var(--gold);
}

/* ── 问答区块 ─────────────────────────── */
.page-faq .faq-block {
  padding: clamp(36px, 6vw, 78px) 0;
}

.page-faq .faq-block--alt {
  background: var(--ink-800);
}

.page-faq .faq-block-head {
  max-width: 62ch;
}

.page-faq .faq-block-head .prose {
  margin-top: 14px;
  color: var(--muted);
}

.page-faq .faq-list {
  margin-top: clamp(22px, 3vw, 36px);
}

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

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

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 2px 18px 14px;
  border-left: 2px solid transparent;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: 1.55;
  color: var(--paper);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-faq .faq-q:hover {
  color: var(--gold-bright);
}

.page-faq .faq-q:hover,
.page-faq .faq-item[open] .faq-q {
  border-left-color: var(--gold);
}

.page-faq .faq-chev {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  margin-top: 8px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-chev {
  transform: rotate(-135deg);
}

.page-faq .faq-a {
  padding: 2px 2px 26px 14px;
}

.page-faq .faq-steps {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 34px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--paper);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

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

.page-faq .code-inline {
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--gold-bright);
  background: var(--felt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* ── 反馈准备 ─────────────────────────── */
.page-faq .faq-prepare {
  border-top: 1px solid var(--line);
}

.page-faq .faq-prepare-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-prepare-main .prose {
  margin-top: 14px;
  color: var(--muted);
}

.page-faq .faq-prep-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: prep;
}

.page-faq .faq-prep-item {
  padding: 16px 0;
  border-top: 1px solid var(--faq-line-soft);
}

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

.page-faq .faq-prep-term {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-prep-term::before {
  counter-increment: prep;
  content: counter(prep, decimal-leading-zero);
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-prep-desc {
  margin: 6px 0 0 30px;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-contact {
  margin-top: 32px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--felt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-deep);
}

.page-faq .faq-contact h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(19px, 2.4vw, 22px);
  color: var(--gold-bright);
}

.page-faq .faq-contact-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--faq-line-soft);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-contact-key {
  flex: 0 0 84px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-contact-val {
  flex: 1 1 220px;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

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

.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

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

/* ── 响应式 ───────────────────────────── */
@media (min-width: 760px) {
  .page-faq .faq-flow-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 52px;
  }

  .page-faq .faq-flow-arrow {
    display: block;
    position: absolute;
    top: 4px;
    right: -36px;
    opacity: 0.75;
  }

  .page-faq .faq-flow-step:last-child .faq-flow-arrow {
    display: none;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-split,
  .page-faq .faq-prepare-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

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

@media (min-width: 1080px) {
  .page-faq .faq-symptoms-main {
    padding-right: clamp(0px, 2vw, 26px);
  }

  .page-faq .faq-a {
    padding-right: 8%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-chev,
  .page-faq .faq-jump a,
  .page-faq .faq-symptom-link::after {
    transition: none;
  }

  .page-faq .faq-symptom-link:hover::after {
    transform: none;
  }
}
</main>