.page-faq {
  --faq-hair: rgba(53, 242, 208, .07);
  --faq-ink: #143026;
  --faq-ink-soft: #43594f;
  position: relative;
  display: block;
  color: var(--chalk);
  background-color: var(--field);
  background-image:
    linear-gradient(var(--faq-hair) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-hair) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: -1px -1px;
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, .45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 3.5vw, 44px);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
  padding-bottom: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-narrow);
  font-size: clamp(32px, 6.6vw, 68px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--chalk);
  transform: skewX(-2.5deg);
  transform-origin: left bottom;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: clamp(14.5px, 1.6vw, 17.5px);
  line-height: 1.78;
  color: var(--mist);
}

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

.page-faq .faq-version {
  border: 2px solid var(--grid);
  border-radius: var(--radius-panel);
  background: var(--turf);
  box-shadow: var(--shadow-hard);
  padding: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-version__head {
  display: inline-block;
  margin: 0;
  padding: 4px 12px;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--carbon);
  background: var(--amber);
  border-radius: var(--radius-pill);
}

.page-faq .faq-version__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-version__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-version__list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding-top: 8px;
  border-top: 1px solid var(--grid);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--chalk);
}

.page-faq .faq-version__list li span {
  flex: none;
  font-size: 11.5px;
  color: var(--cyan);
}

.page-faq .faq-hero__figure {
  margin: 0;
  overflow: hidden;
  border: 2px solid var(--grid);
  border-radius: var(--radius-media);
  background: var(--turf);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: clamp(180px, 36vw, 400px);
  object-fit: cover;
}

.page-faq .faq-hero__caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mist);
  background: var(--carbon);
  border-top: 1px solid var(--grid);
}

/* ---------- 症状导航 ---------- */
.page-faq .faq-symptoms {
  padding: clamp(34px, 5.5vw, 72px) 0;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-symptoms__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-symptoms__title {
  margin: 8px 0 0;
  font-family: var(--font-narrow);
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1.12;
  color: var(--chalk);
}

.page-faq .faq-symptoms__hint {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 40ch;
}

.page-faq .faq-symptoms__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-symptom {
  display: flex;
}

.page-faq .faq-symptom__link {
  display: grid;
  flex: 1;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no body"
    "no tag";
  gap: 4px 14px;
  padding: 16px 18px;
  text-decoration: none;
  color: inherit;
  background: rgba(11, 59, 44, .82);
  border: 2px solid var(--grid);
  border-radius: var(--radius-panel);
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .faq-symptom__link:hover,
.page-faq .faq-symptom__link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-symptom__no {
  grid-area: no;
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-symptom__body {
  grid-area: body;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-faq .faq-symptom__title {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--chalk);
}

.page-faq .faq-symptom__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-symptom__tag {
  grid-area: tag;
  justify-self: start;
  margin-top: 8px;
  font-size: 11.5px;
}

/* ---------- 问答流 ---------- */
.page-faq .faq-answers {
  padding-top: clamp(6px, 1.5vw, 14px);
}

.page-faq .faq-answers__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-index {
  display: none;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  color: var(--cyan);
}

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

.page-faq .faq-index__link {
  display: block;
  padding: 9px 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px dashed rgba(29, 90, 69, .95);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  padding-left: 4px;
}

.page-faq .faq-index__top {
  display: inline-block;
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 194, 75, .5);
}

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

.page-faq .faq-flow {
  display: grid;
  gap: clamp(30px, 5vw, 64px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 100px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
  padding-left: 14px;
  border-left: 3px solid var(--orange);
}

.page-faq .faq-group__no {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--chalk);
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-item {
  border: 2px solid var(--grid);
  border-radius: var(--radius-panel);
  background: rgba(11, 59, 44, .72);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
  background: var(--turf);
}

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 14px 48px 14px 16px;
  font-size: clamp(14.5px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--chalk);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--orange);
}

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

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

.page-faq .faq-item__a {
  padding: 0 16px 18px;
  border-top: 1px solid var(--grid);
  padding-top: 14px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

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

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.76;
  color: var(--mist);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--orange);
}

.page-faq .faq-figure {
  margin: 18px 0 0;
  overflow: hidden;
  border: 2px solid var(--grid);
  border-radius: var(--radius-media);
  background: var(--turf);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--mist);
  background: var(--carbon);
  border-top: 1px solid var(--grid);
}

/* ---------- 联系面板 ---------- */
.page-faq .faq-contact {
  margin-top: 18px;
  padding: clamp(16px, 2.6vw, 26px);
  color: var(--faq-ink);
  background: var(--paper);
  border: 2px solid var(--carbon);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-contact__title {
  margin: 0 0 6px;
  font-family: var(--font-narrow);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--faq-ink);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(3, 17, 13, .25);
}

.page-faq .faq-contact__label {
  flex: none;
  min-width: 68px;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--faq-ink-soft);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--faq-ink);
  text-decoration: none;
  word-break: break-all;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-contact__value:hover,
.page-faq .faq-contact__value:focus-visible {
  color: #B23C0C;
  text-decoration: underline;
}

.page-faq .faq-contact__copy {
  margin-left: auto;
  padding: 4px 12px;
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.6;
  color: var(--faq-ink);
  background: transparent;
  border: 1.5px solid var(--faq-ink);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-contact__copy:hover,
.page-faq .faq-contact__copy:focus-visible {
  background: var(--faq-ink);
  color: var(--paper);
}

.page-faq .faq-contact__copy:focus-visible {
  outline: 2px solid #B23C0C;
  outline-offset: 2px;
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

.page-faq .faq-contact .faq-inline-link {
  color: #0B5B47;
  border-bottom-color: rgba(11, 91, 71, .45);
}

.page-faq .faq-contact .faq-inline-link:hover,
.page-faq .faq-contact .faq-inline-link:focus-visible {
  color: #B23C0C;
  border-bottom-color: #B23C0C;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-symptoms__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-symptoms__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 26ch);
    align-items: end;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-symptoms__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-answers__inner {
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 96px;
    padding-left: 16px;
    border-left: 2px solid var(--grid);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-symptom__link,
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-contact__copy {
    transition: none;
  }

  .page-faq .faq-symptom__link:hover,
  .page-faq .faq-symptom__link:focus-visible {
    transform: none;
  }

  .page-faq .faq-hero__title {
    transform: none;
  }
}