.page-faq {
  background: var(--field);
  color: var(--ink);
  font-family: var(--font-body);
}

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

.page-faq .breadcrumb {
  margin-bottom: 32px;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--copper);
  margin: 0 0 18px;
}

.page-faq .lede {
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-dim);
  max-width: 40ch;
  margin: 20px 0 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 64px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(41, 240, 200, .16) 0%, rgba(6, 58, 49, 0) 58%),
    var(--night);
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 36px;
}

.page-faq .faq-hero__copy h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.6vw, 84px);
  line-height: 1.06;
  letter-spacing: -.02em;
  margin: 0;
  color: var(--ink);
}

.page-faq .faq-hero__media {
  max-width: 420px;
  width: 100%;
}

.page-faq .media {
  overflow: hidden;
}

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

.page-faq .media__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ink-dim);
}

/* ---------- 症状入口带 ---------- */

.page-faq .symptom-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(214px, 1fr);
  margin-top: 52px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-faq .symptom {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 22px 20px 24px;
  border-right: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  scroll-snap-align: start;
  transition: background .22s ease;
}

.page-faq .symptom::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 2px;
  height: 0;
  background: var(--cyan);
  transition: height .28s ease;
}

.page-faq .symptom:hover,
.page-faq .symptom:focus-visible {
  background: var(--glass);
}

.page-faq .symptom:hover::before,
.page-faq .symptom:focus-visible::before {
  height: calc(100% + 2px);
}

.page-faq .symptom__icon svg {
  width: 22px;
  height: 22px;
  color: var(--copper);
}

.page-faq .symptom__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-dim);
}

.page-faq .symptom__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .symptom__hint {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-dim);
}

/* ---------- 高频速查 ---------- */

.page-faq .section__head {
  max-width: 620px;
}

.page-faq .section-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-faq .section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 10px 0 12px;
}

.page-faq .section-note {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-dim);
  margin: 0;
}

.page-faq .quick-list {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .quick {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .quick__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-faq .quick__q {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .quick__a {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-dim);
}

/* ---------- 问答流 ---------- */

.page-faq .qa-stream {
  margin-top: 40px;
  border-top: 1px solid var(--line);
}

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

.page-faq .qa__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-faq .qa__q {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .qa__mark {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .22s ease;
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  margin: 0 0 26px;
  padding: 4px 0 4px 20px;
  border-left: 1px solid var(--line);
  max-width: 74ch;
  animation: faqReveal .3s ease both;
}

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

@keyframes faqReveal {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: none; }
}

.page-faq .qa__body p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-faq .qa__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--copper);
  margin-right: 10px;
  vertical-align: 2px;
}

.page-faq .steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .steps li {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .steps__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  border-top: 1px solid var(--copper);
  padding-top: 7px;
}

.page-faq .qa__handoff {
  margin: 0;
  padding: 12px 16px;
  background: var(--glass);
  border-left: 2px solid var(--orange);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-figure {
  margin: 40px 0 0;
  max-width: 620px;
}

.page-faq .group-cta {
  margin: 28px 0 0;
  padding: 15px 18px;
  background: var(--glass);
  border-left: 2px solid var(--orange);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-dim);
  transition: background .22s ease, color .22s ease;
}

.page-faq .group-cta:hover {
  background: rgba(196, 255, 238, .13);
  color: var(--ink);
}

.page-faq .group-cta__mail {
  font-family: var(--font-mono);
  color: var(--cyan);
  word-break: break-all;
}

/* ---------- 联络区 ---------- */

.page-faq .faq-contact__grid {
  display: grid;
  gap: 28px;
  margin-top: 40px;
}

.page-faq .faq-contact__channels {
  padding: 24px 22px;
  border-left: 2px solid var(--cyan);
}

.page-faq .contact-line {
  display: grid;
  gap: 4px;
  margin: 0 0 18px;
}

.page-faq .contact-line__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--copper);
}

.page-faq .contact-line__value {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--ink);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-faq .steps--lead li {
  font-size: 16px;
}

.page-faq .faq-contact__link {
  margin: 32px 0 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-dim);
}

.page-faq .faq-contact__anchor {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(41, 240, 200, .4);
}

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

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding: 40px 0 88px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-hero__media {
    max-width: none;
  }

  .page-faq .quick {
    grid-template-columns: 44px minmax(0, 1fr) minmax(0, 1.3fr);
    align-items: baseline;
    gap: 20px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .symptom-rail {
    grid-auto-flow: row;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow-x: visible;
  }

  .page-faq .symptom {
    border-bottom: 0;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 3fr);
    gap: 72px;
  }

  .page-faq .qa__head {
    grid-template-columns: 56px minmax(0, 1fr) auto;
    gap: 22px;
    padding: 26px 0;
  }

  .page-faq .qa__body {
    padding-left: 56px;
    margin-left: 0;
  }

  .page-faq .faq-figure {
    max-width: 720px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__body,
  .page-faq .symptom,
  .page-faq .symptom::before,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    animation: none;
    transition: none;
  }
}