.page-faq {
  --faq-rail: 248px;
  --faq-surface: rgba(62, 110, 142, 0.16);
  --faq-hair: rgba(111, 139, 163, 0.32);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: clamp(18px, 3vw, 32px) 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--warm);
}

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

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

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-bottom: clamp(30px, 5vw, 54px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  left: -12%;
  right: -12%;
  height: 460px;
  background:
    radial-gradient(58% 100% at 18% 0%, rgba(49, 224, 208, 0.16), transparent 70%),
    radial-gradient(52% 92% at 86% 8%, rgba(255, 106, 43, 0.13), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 3.4vw, 42px);
  margin-top: clamp(24px, 4vw, 44px);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(268px, 0.6fr);
    align-items: end;
  }
}

.page-faq .faq-hero__lead h1.display {
  margin: 14px 0 0;
  font-size: clamp(36px, 8.4vw, 78px);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead .lede {
  max-width: 46ch;
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  color: var(--warm);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero__panel {
  border: 1px solid rgba(49, 224, 208, 0.3);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(62, 110, 142, 0.26), rgba(7, 19, 32, 0.62));
  padding: clamp(20px, 3vw, 28px);
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-stats {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-stats__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--faq-hair);
}

.page-faq .faq-stats__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-stats dt {
  font-size: 15px;
  color: var(--warm);
}

.page-faq .faq-stats dd {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-hero__panel-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(111, 139, 163, 0.28);
  font-size: 14px;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  padding: clamp(36px, 6vw, 72px) 0 clamp(40px, 6vw, 80px);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 左侧编号列表 ---------- */
.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--line);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 10px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid rgba(111, 139, 163, 0.42);
  border-radius: 999px;
  font-size: 14px;
  color: var(--warm);
  text-decoration: none;
  white-space: nowrap;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-rail__link .mono {
  color: var(--signal);
  font-size: 13px;
}

.page-faq .faq-rail__link.is-active {
  color: var(--ink);
  background: var(--signal);
  border-color: var(--signal);
}

.page-faq .faq-rail__link.is-active .mono {
  color: var(--ink);
}

.page-faq .faq-rail__note {
  margin: 8px 0 0;
  font-size: 17px;
  color: var(--cyan);
  opacity: 0.85;
}

@media (min-width: 1000px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 116px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    border: 0;
    border-left: 2px solid rgba(111, 139, 163, 0.36);
    border-radius: 0;
    padding: 11px 12px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-rail__link:hover {
    color: var(--paper);
    border-left-color: var(--cyan);
  }

  .page-faq .faq-rail__link.is-active {
    color: var(--paper);
    background: linear-gradient(90deg, rgba(255, 106, 43, 0.18), transparent 86%);
    border-left-color: var(--signal);
  }

  .page-faq .faq-rail__link.is-active .mono {
    color: var(--signal);
  }
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-sec {
  padding-bottom: clamp(34px, 5vw, 62px);
}

.page-faq .faq-sec + .faq-sec {
  padding-top: clamp(34px, 5vw, 62px);
  border-top: 1px dashed var(--faq-hair);
}

.page-faq .chapter-head {
  margin: 0;
}

.page-faq .faq-sec__intro {
  max-width: 66ch;
  margin: 16px 0 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--warm);
}

.page-faq .faq-sec a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(49, 224, 208, 0.4);
}

.page-faq .faq-sec a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 01 编号索引 ---------- */
.page-faq .kb-index {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .kb-index__item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 14px;
  padding: 13px 16px;
  border-radius: var(--r-sm);
  border-left: 3px solid var(--mist);
  background: var(--faq-surface);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .kb-index__item:hover {
  border-left-color: var(--cyan);
  background: rgba(62, 110, 142, 0.26);
}

.page-faq .kb-index__no {
  font-size: 14px;
  color: var(--signal);
}

.page-faq .kb-index__name {
  font-size: 16.5px;
  font-weight: 600;
}

.page-faq .kb-index__tags {
  grid-column: 2;
  grid-row: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .kb-index__time {
  grid-column: 3;
  grid-row: 1;
  font-size: 13.5px;
  color: var(--warm);
}

@media (max-width: 560px) {
  .page-faq .kb-index__item {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .page-faq .kb-index__tags {
    grid-column: 2;
    grid-row: 2;
  }

  .page-faq .kb-index__time {
    grid-column: 2;
    grid-row: 3;
  }
}

/* ---------- 02 换设备步骤 ---------- */
.page-faq .swap-figure {
  margin: clamp(22px, 3vw, 30px) 0 0;
}

.page-faq .swap-steps {
  list-style: none;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

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

.page-faq .swap-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  background: var(--ink-deep);
  color: var(--cyan);
  font-size: 15px;
  position: relative;
  z-index: 1;
}

.page-faq .swap-step__title {
  margin: 14px 0 0;
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 700;
}

.page-faq .swap-step__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--warm);
}

.page-faq .swap-step p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--warm);
}

.page-faq .swap-step__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-faq .swap-step__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--warm);
}

.page-faq .swap-step__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--line);
}

@media (min-width: 880px) {
  .page-faq .swap-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    position: relative;
  }

  .page-faq .swap-steps::before {
    content: "";
    position: absolute;
    top: 23px;
    left: 6%;
    right: 6%;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), rgba(49, 224, 208, 0.12));
  }

  .page-faq .swap-step {
    padding: 0 clamp(12px, 1.8vw, 22px);
    border-left: 1px solid var(--faq-hair);
  }

  .page-faq .swap-step:first-child {
    padding-left: 0;
    border-left: 0;
  }
}

/* ---------- 03 三种查法 ---------- */
.page-faq .find-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 32px);
}

@media (min-width: 760px) {
  .page-faq .find-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .find-card {
  display: flex;
  flex-direction: column;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-md);
  background: var(--faq-surface);
}

.page-faq .find-card__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .find-card .h-sub {
  margin: 12px 0 0;
  font-size: clamp(18px, 2vw, 20px);
}

.page-faq .find-card p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--warm);
}

.page-faq .find-card__eg {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--faq-hair);
  font-size: 14px;
  color: var(--mist);
}

.page-faq .find-save {
  margin-top: clamp(26px, 3.4vw, 40px);
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid rgba(49, 224, 208, 0.26);
  background: linear-gradient(150deg, rgba(7, 19, 32, 0.9), rgba(62, 110, 142, 0.18));
}

.page-faq .find-save .h-sub {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 23px);
}

.page-faq .find-save p {
  max-width: 68ch;
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--warm);
}

.page-faq .find-save__tip {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  color: var(--paper);
}

.page-faq .find-save__tip .dot {
  margin-top: 9px;
  flex: 0 0 auto;
}

/* ---------- 04 失败现象 ---------- */
.page-faq .fail-layout {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(22px, 3vw, 32px);
}

@media (min-width: 940px) {
  .page-faq .fail-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

.page-faq .fail-list {
  display: grid;
  gap: 10px;
}

.page-faq .fail-item {
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(7, 19, 32, 0.62);
  transition: border-color 200ms var(--ease);
}

.page-faq .fail-item:hover {
  border-color: rgba(242, 181, 68, 0.55);
}

.page-faq .fail-item__sym {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  padding: 14px 16px;
  background: rgba(242, 181, 68, 0.09);
  border-bottom: 1px dashed rgba(242, 181, 68, 0.34);
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .fail-item__sym .dot {
  flex: 0 0 auto;
}

.page-faq .fail-item__fix {
  margin: 0;
  padding: 14px 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--warm);
}

.page-faq .fail-media {
  margin: 0;
}

/* ---------- 05 转人工 ---------- */
.page-faq .handoff {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(22px, 3vw, 32px);
}

@media (min-width: 840px) {
  .page-faq .handoff {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    align-items: start;
  }
}

.page-faq .handoff__list {
  list-style: none;
  counter-reset: ho;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .handoff__item {
  position: relative;
  padding: 15px 18px 15px 58px;
  border: 1px dashed rgba(111, 139, 163, 0.48);
  border-radius: var(--r-md);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--warm);
}

.page-faq .handoff__item strong {
  color: var(--paper);
}

.page-faq .handoff__item::before {
  counter-increment: ho;
  content: counter(ho, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--signal);
}

.page-faq .handoff__panel {
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--r-lg);
  background: var(--card);
  color: var(--ink);
}

.page-faq .handoff__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .handoff__panel p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .handoff__panel .btn {
  margin-top: 6px;
}

/* ---------- 收尾卷轴 ---------- */
.page-faq .faq-next {
  border-top: 1px solid var(--faq-hair);
  background: var(--ink-deep);
  padding: clamp(28px, 4.5vw, 52px) 0;
}

.page-faq .faq-next__rail {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
}

.page-faq .faq-next__rail li {
  flex: 0 0 min(78vw, 300px);
  scroll-snap-align: start;
}

.page-faq .faq-next__rail a {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 18px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-md);
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--paper);
  text-decoration: none;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-next__rail a .mono {
  font-size: 13px;
  color: var(--signal);
}

.page-faq .faq-next__rail a:hover {
  border-color: var(--cyan);
  background: rgba(49, 224, 208, 0.07);
}

@media (min-width: 900px) {
  .page-faq .faq-next__rail {
    flex-wrap: wrap;
    overflow: visible;
  }

  .page-faq .faq-next__rail li {
    flex: 1 1 220px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .kb-index__item,
  .page-faq .fail-item,
  .page-faq .faq-next__rail a {
    transition: none;
  }
}