.page-faq {
  background: var(--ink-900);
  color: var(--text-on-dark);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .marker {
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: 24px 48px;
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0 112px, var(--hair) 112px 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 20px;
  margin-top: 26px;
}

.page-faq .faq-hero__figure {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(60px, 17vw, 132px);
  line-height: .84;
  font-weight: 600;
  letter-spacing: -.06em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--hair-strong);
}

.page-faq .faq-hero__slot {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted-on-dark);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(28px, 6vw, 52px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-on-dark);
}

.page-faq .faq-hero__chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 17px;
  border-radius: var(--pill);
  border: 1px solid var(--hair-strong);
  font-size: 14px;
  color: var(--text-on-dark);
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-chip b {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--orange);
  font-size: 13px;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--orange);
  background: var(--orange-tint);
  color: var(--paper);
}

/* ---------- 章节标题 ---------- */
.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 18px;
  align-items: start;
  margin-bottom: 28px;
}

.page-faq .faq-head__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 42px);
  line-height: 1;
  font-weight: 600;
  letter-spacing: -.06em;
  color: var(--orange);
}

.page-faq .faq-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-head p {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--muted-on-dark);
}

/* ---------- 现象卡 ---------- */
.page-faq .symptom-grid {
  display: grid;
  gap: 14px;
}

.page-faq .symptom {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--ink-800);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .symptom:hover {
  border-color: var(--hair-strong);
  transform: translateY(-2px);
}

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

.page-faq .symptom__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .symptom__text {
  margin: 0;
  flex: 1;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted-on-dark);
}

.page-faq .symptom__link {
  align-self: flex-start;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, .35);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .symptom__link:hover,
.page-faq .symptom__link:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 浅色分区 ---------- */
.page-faq .faq-steps.surface-light,
.page-faq .faq-more.surface-light {
  background: var(--gray-100);
  color: var(--ink-900);
}

.page-faq .faq-steps .faq-head h2,
.page-faq .faq-more .faq-head h2 {
  color: var(--ink-900);
}

.page-faq .faq-steps .faq-head p,
.page-faq .faq-more .faq-head p {
  color: var(--ink-700);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 28px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--hair);
  background: var(--ink-800);
}

.page-faq .faq-steps .faq-figure {
  border-color: rgba(10, 26, 43, .12);
  background: var(--paper);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 18px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted-on-dark);
  border-top: 1px solid var(--hair);
}

.page-faq .faq-steps .faq-figure figcaption {
  color: var(--ink-700);
  border-top-color: rgba(10, 26, 43, .1);
}

/* ---------- 步骤轨道 ---------- */
.page-faq .step-rail {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0 0 4px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .step-rail__item {
  flex: 0 0 auto;
}

.page-faq .step-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 6px 6px;
  border-radius: var(--pill);
  border: 1px solid rgba(10, 26, 43, .16);
  background: var(--paper);
  color: var(--ink-900);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .step-rail__num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  background: var(--ink-900);
  color: var(--paper);
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-faq .step-rail__label {
  padding-right: 4px;
}

.page-faq .step-rail__link:hover,
.page-faq .step-rail__link:focus-visible {
  border-color: var(--orange);
  background: var(--orange-tint);
}

.page-faq .step-rail__link:hover .step-rail__num,
.page-faq .step-rail__link:focus-visible .step-rail__num {
  background: var(--orange);
  color: var(--ink-900);
}

/* ---------- 折叠组件通用（页面内） ---------- */
.page-faq .accordion__summary::after {
  content: none;
}

.page-faq .accordion__summary {
  list-style: none;
  cursor: pointer;
}

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

.page-faq .step__arrow,
.page-faq .faq-item__arrow {
  justify-self: end;
  align-self: center;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--orange-deep);
  border-bottom: 2px solid var(--orange-deep);
  transform: rotate(45deg);
  margin-top: -4px;
  transition: transform .22s var(--ease), margin-top .22s var(--ease);
}

.page-faq .step[open] .step__arrow,
.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(-135deg);
  margin-top: 4px;
}

/* ---------- 五步详情 ---------- */
.page-faq .step {
  background: var(--paper);
  border: 1px solid rgba(10, 26, 43, .12);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .step[open] {
  border-color: rgba(255, 106, 26, .75);
  box-shadow: 0 22px 44px -34px rgba(10, 26, 43, .8);
}

.page-faq .step__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 6px 14px;
  align-items: center;
  padding: 16px 18px;
}

.page-faq .step__num {
  grid-column: 1;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--orange-deep);
  letter-spacing: .04em;
}

.page-faq .step__title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-faq .step__hint {
  grid-column: 2;
  grid-row: 2;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-700);
  opacity: .78;
}

.page-faq .step__arrow {
  grid-column: 3;
  grid-row: 1 / span 2;
}

.page-faq .step__body,
.page-faq .faq-item__body {
  margin: 0 16px 18px 18px;
  padding: 6px 0 6px 16px;
  border-left: 2px solid var(--orange);
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-700);
}

.page-faq .step__body p,
.page-faq .faq-item__body p {
  margin: 0 0 10px;
}

.page-faq .step__body p:last-child,
.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

.page-faq .step__body strong,
.page-faq .faq-item__body strong {
  color: var(--ink-900);
  font-weight: 600;
}

.page-faq .step__check {
  display: block;
  color: var(--ink-900);
}

.page-faq .step__flag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  border-radius: var(--pill);
  background: rgba(47, 198, 166, .16);
  color: #14735F;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  vertical-align: 1px;
}

.page-faq .step__next {
  color: var(--ink-700);
  font-size: 14px;
}

/* ---------- 栏目切换 ---------- */
.page-faq .shift-compare {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
}

.page-faq .shift-col {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair);
  background: var(--ink-800);
}

.page-faq .shift-col--now {
  border-color: rgba(255, 106, 26, .65);
  background: var(--ink-700);
}

.page-faq .shift-col__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted-on-dark);
}

.page-faq .shift-col--now .shift-col__tag {
  color: var(--orange);
}

.page-faq .shift-col__big {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 64px;
  line-height: .95;
  font-weight: 600;
  letter-spacing: -.06em;
  color: var(--paper);
}

.page-faq .shift-col--now .shift-col__big {
  color: var(--orange);
}

.page-faq .shift-col__unit {
  margin: 4px 0 0;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--muted-on-dark);
}

.page-faq .shift-col__text {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-on-dark);
}

.page-faq .shift-notes h3 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  color: var(--paper);
}

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

.page-faq .shift-notes__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--orange);
  background: var(--ink-800);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-on-dark);
}

.page-faq .shift-notes__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
}

.page-faq .shift-notes > p {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted-on-dark);
}

.page-faq .shift-notes > p a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, .4);
}

.page-faq .shift-notes > p a:hover,
.page-faq .shift-notes > p a:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 高频问答 ---------- */
.page-faq .faq-item {
  background: var(--paper);
  border: 1px solid rgba(10, 26, 43, .12);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(194, 68, 10, .55);
  box-shadow: 0 22px 44px -36px rgba(10, 26, 43, .85);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--orange-deep);
  letter-spacing: .06em;
}

.page-faq .faq-item__q {
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink-900);
}

.page-faq .faq-item__body a {
  color: var(--orange-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(194, 68, 10, .35);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  border-color: var(--ink-900);
  color: var(--ink-900);
}

/* ---------- 联系交接 ---------- */
.page-faq .handoff {
  display: grid;
  gap: 16px;
}

.page-faq .handoff__card {
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair);
  background: var(--ink-800);
}

.page-faq .handoff__card--accent {
  border-color: rgba(255, 106, 26, .55);
  background: var(--ink-700);
}

.page-faq .handoff__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
}

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

.page-faq .handoff__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-on-dark);
}

.page-faq .handoff__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--orange);
  padding-top: 3px;
}

.page-faq .handoff__list b {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--paper);
}

.page-faq .handoff__hint {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted-on-dark);
}

.page-faq .handoff__text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-on-dark);
}

.page-faq .handoff__meta {
  margin: 0 0 20px;
  display: grid;
  gap: 10px;
}

.page-faq .handoff__meta-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hair);
}

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

.page-faq .handoff__meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted-on-dark);
}

.page-faq .handoff__meta dd {
  margin: 0;
  font-size: 15px;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .handoff__meta dd a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, .5);
}

.page-faq .handoff__meta dd a:hover,
.page-faq .handoff__meta dd a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

.page-faq .handoff__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  text-decoration: none;
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding-block: 30px 64px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
    margin-top: 34px;
  }

  .page-faq .symptom-grid {
    grid-template-columns: 1.15fr 1fr .85fr;
    gap: 18px;
  }

  .page-faq .shift-compare {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .page-faq .handoff {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-faq .step__summary {
    padding: 18px 22px;
  }

  .page-faq .step__body,
  .page-faq .faq-item__body {
    margin: 0 22px 20px 22px;
    padding-left: 20px;
    font-size: 15.5px;
  }

  .page-faq .faq-item__summary {
    padding: 18px 22px;
  }

  .page-faq .faq-item__q {
    font-size: 16px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-head {
    gap: 18px 26px;
    margin-bottom: 36px;
  }

  .page-faq .symptom {
    padding: 26px;
  }

  .page-faq .handoff__card {
    padding: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .symptom,
  .page-faq .faq-chip,
  .page-faq .step-rail__link,
  .page-faq .step__arrow,
  .page-faq .faq-item__arrow {
    transition: none;
  }

  .page-faq .symptom:hover {
    transform: none;
  }
}