.page-faq {
  --faq-line: var(--line-soft);
  --faq-pad: clamp(30px, 6vw, 56px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* 面包屑 */
.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.page-faq .faq-crumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--cyan);
  border-color: var(--line-lit);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 46px) 0 clamp(32px, 6vw, 54px);
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(
    90deg,
    var(--grid-ghost) 0 1px,
    transparent 1px 72px
  );
}
.page-faq .faq-hero__title {
  margin: 16px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 8.6vw, 4.6rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: 0.01em;
  color: var(--bone);
  margin-left: -0.045em;
  text-wrap: balance;
}
.page-faq .faq-hero__lede {
  max-width: 60ch;
  margin: 0 0 22px;
  color: var(--mist);
  font-size: clamp(0.96rem, 2.4vw, 1.05rem);
  line-height: 1.8;
}
.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* 症状索引 */
.page-faq .faq-index {
  padding: var(--faq-pad) 0;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-index__head {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}
.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 4.6vw, 2.25rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--bone);
}
.page-faq .faq-index__lede {
  max-width: 48ch;
  margin: 0;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.7;
}
.page-faq .faq-index__grid {
  display: grid;
  gap: 22px;
}
.page-faq .faq-speclist {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-symptom {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 13px 14px;
  border: 1px solid var(--faq-line);
  background: rgba(10, 36, 24, 0.46);
  color: var(--bone);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.page-faq .faq-symptom:hover,
.page-faq .faq-symptom:focus-visible {
  background: var(--bone);
  color: var(--ink);
  border-color: var(--cyan);
  outline: none;
}
.page-faq .faq-symptom__no {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.page-faq .faq-symptom__title {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
}
.page-faq .faq-symptom__desc {
  display: block;
  margin-top: 4px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-symptom:hover .faq-symptom__desc,
.page-faq .faq-symptom:focus-visible .faq-symptom__desc {
  color: var(--turf-mid);
}
.page-faq .faq-symptom__arrow {
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--orange);
}
.page-faq .faq-symptom:hover .faq-symptom__arrow,
.page-faq .faq-symptom:focus-visible .faq-symptom__arrow {
  color: var(--orange-lo);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--turf-deep);
  overflow: hidden;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure--index img {
  aspect-ratio: 4 / 3;
}
.page-faq .faq-figure--phone img {
  aspect-ratio: 3 / 4;
}
.page-faq .faq-figure figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--faq-line);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 布局：目录 + 问答 */
.page-faq .faq-layout {
  display: grid;
  gap: 24px;
  padding: var(--faq-pad) 0 0;
}
.page-faq .faq-rail {
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}
.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}
.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-faq .faq-rail__link {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
  align-items: baseline;
  padding: 7px 10px;
  border: 1px solid var(--faq-line);
  color: var(--mist);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan);
  border-color: var(--line-lit);
  outline: none;
}
.page-faq .faq-rail__no {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--line-green);
}

/* 问答区块 */
.page-faq .faq-block {
  padding-bottom: clamp(30px, 5vw, 46px);
  scroll-margin-top: 96px;
}
.page-faq .faq-block + .faq-block {
  border-top: 1px solid var(--faq-line);
  padding-top: clamp(28px, 5vw, 40px);
}
.page-faq .faq-block:last-child {
  padding-bottom: 0;
}
.page-faq .faq-block__head {
  margin-bottom: 18px;
}
.page-faq .faq-block__no {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange);
}
.page-faq .faq-block__title {
  margin: 6px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--bone);
}
.page-faq .faq-block__intro {
  max-width: 56ch;
  margin: 0;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.75;
}

/* 折叠问答 */
.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-q > summary {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px 0;
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--bone);
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-q > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q > summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 1em;
  font-family: var(--font-data);
  font-weight: 400;
  color: var(--orange);
}
.page-faq .faq-q[open] > summary {
  color: var(--cyan);
}
.page-faq .faq-q[open] > summary::before {
  content: "−";
  color: var(--cyan);
}
.page-faq .faq-q > summary:hover,
.page-faq .faq-q > summary:focus-visible {
  color: var(--cyan);
  outline: none;
}
.page-faq .faq-q > summary:focus-visible {
  outline: 1px solid var(--line-lit);
  outline-offset: 2px;
}
.page-faq .faq-q__body {
  padding: 0 0 16px 1.9em;
  color: var(--mist);
  font-size: 0.93rem;
  line-height: 1.8;
}
.page-faq .faq-q__body p {
  margin: 0 0 10px;
}
.page-faq .faq-q__body p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-q__body a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease);
}
.page-faq .faq-q__body a:hover,
.page-faq .faq-q__body a:focus-visible {
  border-color: var(--cyan);
}

/* 提醒级别 */
.page-faq .faq-levels {
  display: grid;
  gap: 1px;
  margin: 0 0 18px;
  border: 1px solid var(--line);
  background: var(--faq-line);
}
.page-faq .faq-level {
  padding: 14px 16px;
  background: var(--turf-deep);
}
.page-faq .faq-level__name {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.page-faq .faq-level__text {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--mist);
}

/* 安卓查看 */
.page-faq .faq-android {
  display: grid;
  gap: 22px;
}
.page-faq .faq-steps {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}
.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 40px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
}
.page-faq .faq-steps li::before {
  content: "0" counter(faqstep);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 2px 5px;
  border: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--orange);
}

/* 联系客服 */
.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  margin: 0 0 18px;
  border: 1px solid var(--line);
  background: var(--faq-line);
}
.page-faq .faq-contact__cell {
  padding: 16px 18px;
  background: var(--turf-deep);
}
.page-faq .faq-contact__key {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.page-faq .faq-contact__val {
  margin: 0;
  font-family: var(--font-data);
  font-size: clamp(0.98rem, 3.4vw, 1.24rem);
  line-height: 1.5;
  color: var(--bone);
  overflow-wrap: anywhere;
}
.page-faq .faq-contact__hint {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--mist);
}
.page-faq .faq-note {
  margin: 0 0 18px;
  padding-left: 12px;
  border-left: 1px solid var(--line-green);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--mist);
}
.page-faq .faq-cta {
  margin: 22px 0 0;
}

/* 平板与桌面 */
@media (min-width: 720px) {
  .page-faq .faq-levels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-index__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
  .page-faq .faq-android {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr);
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    border-bottom: 0;
    padding-bottom: 0;
  }
  .page-faq .faq-rail__list {
    display: grid;
    gap: 0;
    overflow: visible;
    padding: 0;
  }
  .page-faq .faq-rail__link {
    border: 0;
    border-top: 1px solid var(--faq-line);
    padding: 10px 0;
    white-space: normal;
    font-size: 13.5px;
  }
  .page-faq .faq-rail__link:last-child {
    border-bottom: 1px solid var(--faq-line);
  }
}
</