.page-faq {
  --faq-gap: 20px;
  --faq-line: 1px solid var(--line);
  --faq-line-strong: 1px solid var(--line-strong);
  --faq-slate-ink: #23394d;
}

/* ---------- 面包屑间距 ---------- */
.page-faq .breadcrumb {
  padding-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -28%;
  right: -18%;
  width: 620px;
  height: 620px;
  background:
    radial-gradient(circle at 34% 34%, rgba(53, 196, 181, 0.16), transparent 62%),
    radial-gradient(circle at 68% 62%, rgba(46, 123, 214, 0.2), transparent 60%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(30px, 6vw, var(--fs-xl));
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-hero__main .lede {
  max-width: 34em;
  color: var(--text-dim);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* 首屏状态卡 */
.page-faq .faq-status {
  padding: 22px;
}

.page-faq .faq-status__title {
  margin: 0;
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-mute);
  font-family: var(--font-mono);
}

.page-faq .faq-status__time {
  margin: 10px 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(30px, 8vw, 44px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-faq .faq-status__note {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--text-dim);
  line-height: 1.7;
}

.page-faq .faq-status__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: var(--faq-line);
  display: grid;
  gap: 10px;
  font-size: var(--fs-sm);
  color: var(--text-dim);
}

.page-faq .faq-status__list li {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ---------- 现象索引条 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 6;
  margin-top: 8px;
  background: linear-gradient(180deg, rgba(6, 22, 38, 0.97), rgba(6, 22, 38, 0.86));
  border-top: var(--faq-line);
  border-bottom: var(--faq-line);
  backdrop-filter: blur(8px);
}

.page-faq .faq-index__inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-faq .faq-index__label {
  display: none;
  margin: 0;
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: var(--text-mute);
}

.page-faq .faq-index__list {
  list-style: none;
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 12px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__item {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 8px 16px;
  border: var(--faq-line-strong);
  border-radius: 999px;
  font-size: var(--fs-sm);
  color: var(--text-dim);
  text-decoration: none;
  transition: border-color var(--t-fast), color var(--t-fast), background-color var(--t-fast);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--red);
  color: var(--text);
  background: rgba(214, 34, 60, 0.08);
}

/* ---------- 横幅图 ---------- */
.page-faq .faq-banner {
  margin: 0;
  padding: 40px 0 8px;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--r-lg);
  border: var(--faq-line);
  object-fit: cover;
}

.page-faq .faq-banner__caption {
  margin-top: 12px;
  font-size: var(--fs-xs);
  color: var(--text-mute);
  line-height: 1.7;
}

/* ---------- 三类原因 ---------- */
.page-faq .faq-causes__grid {
  gap: var(--faq-gap);
}

.page-faq .faq-cause {
  position: relative;
  padding: 22px 20px 20px;
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .faq-cause::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--blue), rgba(53, 196, 181, 0.5) 55%, transparent);
}

.page-faq .faq-cause .card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--blue-soft);
}

.page-faq .faq-cause .card__title {
  margin: 8px 0 12px;
  font-size: var(--fs-md);
  color: var(--text);
}

.page-faq .faq-cause__text,
.page-faq .faq-cause__hint {
  margin: 0 0 12px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-cause__hint {
  margin-bottom: 0;
  padding-top: 12px;
  border-top: var(--faq-line);
  color: var(--text-mute);
}

.page-faq .faq-causes__figure {
  margin: 32px 0 0;
}

/* ---------- 现象折叠列表 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: var(--faq-line);
  border-radius: var(--r-md);
  background: var(--glass);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: border-color var(--t);
}

.page-faq .faq-item[open] {
  border-color: var(--line-strong);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 1px solid var(--blue-soft);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: var(--blue-soft);
}

.page-faq .faq-item__title {
  margin: 0;
  font-size: var(--fs-base);
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .faq-item__arrow {
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--silver);
  border-bottom: 1px solid var(--silver);
  transform: rotate(45deg);
  transition: transform var(--t);
}

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

.page-faq .faq-item__body {
  padding: 4px 18px 20px;
  border-top: var(--faq-line);
  animation: faq-fade 0.2s ease both;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-item__cause {
  margin: 16px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-item__cause strong {
  color: var(--blue-soft);
  font-weight: 600;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  position: relative;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line-strong);
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 7px 0;
}

.page-faq .faq-steps__num {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 27px;
  height: 27px;
  border-radius: 50%;
  border: var(--faq-line-strong);
  background: var(--deep);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blue-soft);
}

.page-faq .faq-steps__item p {
  margin: 1px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 换设备问答 ---------- */
.page-faq .faq-ask-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-ask {
  padding: 20px;
  border: var(--faq-line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(14, 44, 74, 0.55), rgba(6, 22, 38, 0.4));
}

.page-faq .faq-ask__q {
  position: relative;
  margin: 0 0 12px;
  padding-left: 16px;
  font-size: var(--fs-base);
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

.page-faq .faq-ask__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 3px;
  height: 1em;
  border-radius: 2px;
  background: var(--red);
}

.page-faq .faq-ask__a {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 上一期结果（浅底区） ---------- */
.page-faq .faq-history__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-faq .faq-history .eyebrow {
  color: var(--blue);
}

.page-faq .faq-history h2 {
  margin: 12px 0 14px;
  font-size: clamp(24px, 4.6vw, var(--fs-lg));
  line-height: 1.3;
  color: var(--faq-slate-ink);
}

.page-faq .faq-history__lede {
  margin: 0;
  font-size: var(--fs-base);
  line-height: 1.8;
  color: var(--slate);
}

.page-faq .faq-history__lede a,
.page-faq .faq-history__list a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 123, 214, 0.35);
}

.page-faq .faq-history__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(75, 95, 114, 0.2);
}

.page-faq .faq-history__list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(75, 95, 114, 0.2);
}

.page-faq .faq-history__k {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: var(--blue);
}

.page-faq .faq-history__v {
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-faq .faq-contact__checklist {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__checklist li {
  position: relative;
  padding-left: 24px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-contact__checklist li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(53, 196, 181, 0.7);
}

.page-faq .faq-contact__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: var(--faq-line);
  font-size: var(--fs-xs);
  line-height: 1.8;
  color: var(--text-mute);
}

.page-faq .faq-sticky {
  padding: 22px;
}

.page-faq .faq-sticky__title {
  margin: 0;
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--text-mute);
}

.page-faq .faq-sticky__hours {
  margin: 10px 0 18px;
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .faq-sticky__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  border-top: var(--faq-line);
  padding-top: 16px;
}

.page-faq .faq-sticky__list li {
  display: grid;
  gap: 4px;
}

.page-faq .faq-sticky__label {
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.page-faq .faq-sticky__list a {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--blue-soft);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-sticky__list a:hover,
.page-faq .faq-sticky__list a:focus-visible {
  color: var(--text);
}

.page-faq .faq-sticky__hint {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--faq-line);
  font-size: var(--fs-xs);
  line-height: 1.75;
  color: var(--text-mute);
}

.page-faq .faq-sticky__hint a {
  color: var(--blue-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 192, 240, 0.4);
}

/* ---------- 路径选择 ---------- */
.page-faq .faq-path__options {
  display: grid;
  gap: 18px;
}

.page-faq .faq-path__option {
  padding: 24px 22px;
  border: var(--faq-line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(14, 44, 74, 0.5), rgba(6, 22, 38, 0.35));
}

.page-faq .faq-path__option--primary {
  border-color: rgba(214, 34, 60, 0.45);
  background: linear-gradient(180deg, rgba(143, 16, 36, 0.24), rgba(6, 22, 38, 0.4));
}

.page-faq .faq-path__tag {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: var(--text-mute);
}

.page-faq .faq-path__tag--accent {
  color: var(--red);
}

.page-faq .faq-path__title {
  margin: 0 0 12px;
  font-size: var(--fs-md);
  line-height: 1.45;
  color: var(--text);
}

.page-faq .faq-path__text {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-path__text .link-more {
  color: var(--blue-soft);
}

/* ---------- 锚点定位留白 ---------- */
.page-faq #cause,
.page-faq #symptom,
.page-faq #device,
.page-faq #history,
.page-faq #contact-help,
.page-faq #path {
  scroll-margin-top: 84px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-causes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-history__list li {
    grid-template-columns: 8.5em 1fr;
    align-items: baseline;
    gap: 18px;
  }

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

  .page-faq .faq-contact__checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-faq .faq-hero__aside {
    margin-top: 24px;
    margin-right: -24px;
  }

  .page-faq .faq-index__label {
    display: block;
  }

  .page-faq .faq-history__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 48px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-faq .faq-sticky {
    position: sticky;
    top: 92px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__body {
    animation: none;
  }

  .page-faq .faq-index__item,
  .page-faq .faq-item,
  .page-faq .faq-item__arrow {
    transition: none;
  }
}