.page-faq {
  --faq-jump-w: 224px;
  --faq-gap: clamp(20px, 3.2vw, 28px);
  background: var(--sand);
  color: var(--ink);
}

.page-faq [id] {
  scroll-margin-top: 96px;
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(255, 107, 53, 0.28) 0%, rgba(255, 107, 53, 0) 55%),
    linear-gradient(155deg, var(--teal-dark) 0%, var(--teal-deep) 46%, var(--teal) 100%);
  color: var(--paper);
  padding: clamp(24px, 4vw, 40px) 0 clamp(40px, 6vw, 68px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(251, 249, 245, 0.07) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(251, 249, 245, 0.05) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-faq .faq-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .crumbs,
.page-faq .faq-hero .crumbs a {
  color: rgba(251, 249, 245, 0.72);
}

.page-faq .faq-hero .eyebrow {
  color: var(--orange-soft);
  margin-top: 18px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7.6vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  max-width: 16em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: clamp(1rem, 1.3vw, 1.0625rem);
  line-height: 1.8;
  color: rgba(251, 249, 245, 0.84);
}

.page-faq .hero-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .hero-chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(251, 249, 245, 0.32);
  background: rgba(251, 249, 245, 0.09);
  color: var(--paper);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease), color 0.22s var(--ease);
}

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

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding: clamp(24px, 4vw, 48px) var(--gutter) clamp(48px, 7vw, 88px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

/* ---------- 左侧问题索引 ---------- */
.page-faq .faq-jump {
  background: var(--paper);
  border: var(--edge);
  border-radius: var(--r-md);
  padding: 16px;
  min-width: 0;
}

.page-faq .faq-jump-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--teal-deep);
  margin: 0 0 12px;
}

.page-faq .faq-jump ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--mist);
  background: var(--sand);
  color: var(--ink);
  font-size: 0.9375rem;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--teal-deep);
  border-color: var(--teal);
  background: var(--paper);
}

.page-faq .jump-no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.6875rem;
  color: var(--orange-deep);
  letter-spacing: 0.04em;
}

.page-faq .faq-jump-note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--mist);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 内容块 ---------- */
.page-faq .faq-body {
  min-width: 0;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-block {
  background: var(--paper);
  border-radius: var(--r-lg);
  padding: clamp(20px, 4vw, 40px);
  box-shadow: var(--shadow);
}

.page-faq .faq-head {
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-faq .faq-head .eyebrow {
  color: var(--teal-deep);
}

.page-faq .faq-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.375rem, 4.2vw, 2.125rem);
  line-height: 1.14;
  letter-spacing: -0.005em;
  margin: 8px 0 12px;
  color: var(--ink);
  max-width: 22em;
}

.page-faq .faq-head p {
  margin: 0;
  max-width: 46em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-block a {
  color: var(--teal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-block a:hover,
.page-faq .faq-block a:focus-visible {
  color: var(--orange-deep);
}

.page-faq .faq-tail {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--mist);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 三步流程条 ---------- */
.page-faq .faq-block--flow {
  background: var(--sand);
  border: var(--edge);
  box-shadow: none;
}

.page-faq .step-flow {
  display: grid;
  gap: 14px;
}

.page-faq .step {
  position: relative;
  background: var(--paper);
  border: var(--edge);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .step + .step::before {
  content: "";
  position: absolute;
  left: 39px;
  top: -15px;
  width: 2px;
  height: 14px;
  background: var(--mist);
}

.page-faq .step[open] {
  border-color: var(--teal);
  box-shadow: 0 18px 34px -30px rgba(20, 24, 31, 0.9);
}

.page-faq .step-sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  min-height: 60px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .step-sum:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -3px;
}

.page-faq .step-no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.5rem, 5vw, 1.875rem);
  line-height: 1;
  color: var(--orange);
  min-width: 40px;
  text-align: left;
}

.page-faq .step-title {
  flex: 1 1 auto;
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .step-state {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  padding: 5px 9px;
  border-radius: var(--r-pill);
  background: rgba(14, 124, 134, 0.1);
  color: var(--teal-deep);
  white-space: nowrap;
}

.page-faq .step[open] .step-state {
  background: var(--orange-soft);
  color: var(--orange-deep);
}

.page-faq .step-body {
  padding: 0 16px 20px 68px;
  font-size: 0.9688rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .step-body p {
  margin: 0 0 10px;
  max-width: 40em;
}

.page-faq .step-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 小屏章节 ---------- */
.page-faq .device-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.page-faq .device-visual img {
  width: 100%;
  border-radius: var(--r-md);
  object-fit: cover;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--teal-deep), var(--teal));
}

.page-faq .media-caption {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--ink-soft);
  margin: 8px 0 0;
}

.page-faq .device-tabs .tab-strip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-faq .device-tabs .tab-btn {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--mist);
  background: var(--sand);
  color: var(--ink-soft);
  font-size: 0.875rem;
  font-family: var(--font-body);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .device-tabs .tab-btn[aria-selected="true"] {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--paper);
}

.page-faq .device-tabs .tab-btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .tab-panel {
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--r-md);
  background: var(--sand);
  border-left: 3px solid var(--teal);
}

.page-faq .tab-panel h3 {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .tab-panel p {
  margin: 0 0 10px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 42em;
}

.page-faq .tab-panel p:last-child {
  margin-bottom: 0;
}

.page-faq .device-svg {
  width: 96px;
  height: auto;
  color: var(--teal-deep);
  justify-self: start;
  opacity: 0.85;
}

/* ---------- 安装记录 ---------- */
.page-faq .lookup-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .lookup-card {
  padding: 18px;
  border-radius: var(--r-md);
  background: var(--sand);
  border-top: 3px solid var(--teal);
}

.page-faq .lookup-card--no {
  border-top-color: var(--orange);
}

.page-faq .lookup-card--time {
  border-top-color: var(--moss);
}

.page-faq .lookup-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .lookup-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .rule-note {
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--r-md);
  background: rgba(14, 124, 134, 0.07);
  border: 1px dashed var(--teal);
}

.page-faq .rule-note p {
  margin: 0 0 14px;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 46em;
}

.page-faq .rule-note strong {
  color: var(--teal-deep);
}

.page-faq .rule-note .btn-outline {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--teal);
  color: var(--teal-deep);
  font-size: 0.9375rem;
  text-decoration: none;
  background: var(--paper);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .rule-note .btn-outline:hover,
.page-faq .rule-note .btn-outline:focus-visible {
  background: var(--teal);
  color: var(--paper);
}

/* ---------- 订阅 ---------- */
.page-faq .faq-block--warm {
  background: var(--orange-soft);
  box-shadow: none;
  border: 1px solid rgba(232, 85, 31, 0.24);
}

.page-faq .faq-block--warm .faq-head .eyebrow {
  color: var(--orange-deep);
}

.page-faq .faq-block--warm .faq-head p {
  color: #6B4534;
}

.page-faq .faq-block--warm .faq-tail {
  border-top-color: rgba(232, 85, 31, 0.28);
  color: #6B4534;
}

.page-faq .faq-block--warm a {
  color: var(--orange-deep);
}

.page-faq .remind-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.page-faq .remind-item {
  background: var(--paper);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-bottom: 2px solid rgba(232, 85, 31, 0.35);
}

.page-faq .remind-k {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  color: var(--orange-deep);
}

.page-faq .remind-v {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ---------- 客服准备 ---------- */
.page-faq .faq-block--night {
  background: var(--night);
  color: var(--paper);
  box-shadow: none;
}

.page-faq .faq-block--night .faq-head h2 {
  color: var(--paper);
}

.page-faq .faq-block--night .faq-head .eyebrow {
  color: var(--orange);
}

.page-faq .faq-block--night .faq-head p {
  color: rgba(251, 249, 245, 0.78);
}

.page-faq .faq-block--night a {
  color: #FFB99B;
}

.page-faq .faq-block--night a:hover,
.page-faq .faq-block--night a:focus-visible {
  color: var(--orange-soft);
}

.page-faq .prepare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

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

.page-faq .checklist li {
  position: relative;
  padding-left: 30px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(251, 249, 245, 0.86);
}

.page-faq .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 2px solid var(--orange);
}

.page-faq .prepare-figure {
  margin: 0;
}

.page-faq .prepare-figure img {
  width: 100%;
  border-radius: var(--r-md);
  object-fit: cover;
  aspect-ratio: 3 / 2;
  background: linear-gradient(135deg, #24365C, #0b3d42);
}

.page-faq .prepare-figure .media-caption {
  color: rgba(251, 249, 245, 0.66);
}

.page-faq .prepare-tail {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(251, 249, 245, 0.16);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(251, 249, 245, 0.78);
}

/* ---------- 常见问题速查 ---------- */
.page-faq .quick-faq {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .qa {
  background: var(--sand);
  border: var(--edge);
  border-radius: var(--r-sm);
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--teal);
}

.page-faq .qa-q {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .qa-q::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.125rem;
  line-height: 1;
  color: var(--teal);
  flex: 0 0 auto;
}

.page-faq .qa[open] .qa-q::before {
  content: "–";
  color: var(--orange);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -3px;
}

.page-faq .qa-a {
  padding: 0 14px 16px 36px;
  font-size: 0.9063rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .lookup-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .prepare-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 26px;
  }

  .page-faq .device-layout {
    grid-template-columns: minmax(0, 1fr) 96px;
    grid-template-areas:
      "visual visual"
      "tabs svg";
    gap: 18px 20px;
  }

  .page-faq .device-visual {
    grid-area: visual;
  }

  .page-faq .device-tabs {
    grid-area: tabs;
    min-width: 0;
  }

  .page-faq .device-svg {
    grid-area: svg;
    align-self: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-jump-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-jump {
    position: sticky;
    top: 96px;
    padding: 18px;
  }

  .page-faq .faq-jump ol {
    display: block;
  }

  .page-faq .faq-jump li + li {
    margin-top: 4px;
  }

  .page-faq .faq-jump a {
    border: 1px solid transparent;
    background: transparent;
    border-left: 3px solid transparent;
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
    padding: 10px 10px 10px 12px;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .faq-jump a:focus-visible {
    border-left-color: var(--orange);
    background: var(--sand);
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
  }

  .page-faq .device-layout {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr) 96px;
    grid-template-areas: "visual tabs svg";
    align-items: start;
  }

  .page-faq .step-body {
    padding-left: 84px;
    padding-right: 24px;
  }

  .page-faq .step-sum {
    padding: 16px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .hero-chip,
  .page-faq .faq-jump a,
  .page-faq .step,
  .page-faq .qa,
  .page-faq .device-tabs .tab-btn,
  .page-faq .rule-note .btn-outline {
    transition: none;
  }
}