.page-faq {
  --faq-space: clamp(52px, 8vw, 96px);
  --faq-line: var(--blue-light);
  background: var(--paper);
}

.page-faq .faq-block {
  padding: var(--faq-space) 0;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 46px) 0 clamp(46px, 7vw, 84px);
  background: linear-gradient(135deg, var(--paper) 0%, var(--paper-cool) 100%);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: -120px;
  height: 200px;
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  background: var(--dune);
  opacity: 0.16;
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 4vw, 34px);
  font-size: 13px;
  color: var(--rock-grey);
}

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

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

.page-faq .breadcrumb span[aria-hidden="true"] {
  margin: 0 8px;
  color: var(--blue-light);
}

.page-faq .faq-hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
  align-items: start;
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--wolfberry);
}

.page-faq .faq-hero-lead h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.16;
  font-size: clamp(30px, 5.4vw, 52px);
  color: var(--ink);
  max-width: 16em;
}

.page-faq .faq-hero-lead .lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--ink);
}

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

.page-faq .faq-hero-actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.page-faq .device-kicker {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--rock);
}

.page-faq .device-segmented {
  display: flex;
  gap: 6px;
  padding: 6px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-card);
}

.page-faq .device-segmented .segmented-btn {
  flex: 1 1 0;
  min-height: 44px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--rock);
  cursor: pointer;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), transform 0.16s var(--ease);
}

.page-faq .device-segmented .segmented-btn:hover {
  transform: translateY(-2px);
}

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

.page-faq .device-segmented .segmented-btn[aria-selected="true"] {
  background: var(--wolfberry);
  color: var(--ink);
  box-shadow: 0 8px 16px -12px rgba(228, 118, 43, 0.9);
}

.page-faq .device-panels {
  margin-top: 16px;
}

.page-faq .device-panel {
  padding: 20px 20px 22px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-card);
}

.page-faq .segmented-panel[hidden] {
  display: none;
}

.page-faq .device-panel .mono-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--blue-mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--blue-deep);
}

.page-faq .device-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .device-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .device-list li:last-child {
  margin-bottom: 0;
}

.page-faq .device-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 2px;
  border-radius: 2px;
  background: var(--wolfberry);
}

/* 区块标题 */
.page-faq .faq-head {
  margin-bottom: clamp(24px, 4vw, 40px);
  max-width: 46em;
}

.page-faq .faq-head .display-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.22;
  font-size: clamp(25px, 3.8vw, 38px);
  color: var(--ink);
}

.page-faq .faq-head-note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock-grey);
}

/* 版本对照 */
.page-faq .faq-version {
  background: linear-gradient(180deg, var(--paper) 0%, var(--blue-mist) 100%);
}

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

.page-faq .version-card {
  padding: 24px 22px 26px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-card);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-faq .version-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-float);
}

.page-faq .version-card--lite {
  border-top: 4px solid var(--blue);
}

.page-faq .version-card--full {
  border-top: 4px solid var(--wolfberry);
}

.page-faq .version-card .mono-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.page-faq .version-size {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5vw, 46px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--blue-deep);
}

.page-faq .version-card--full .version-size {
  color: var(--wolfberry);
}

.page-faq .version-size span {
  margin-left: 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--rock-grey);
}

.page-faq .version-rows {
  border-top: 1px dashed var(--faq-line);
}

.page-faq .version-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .version-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rock-grey);
}

.page-faq .version-val {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .version-pick {
  margin: 18px 0 0;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: var(--wolfberry-soft);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .version-figure {
  margin: 0;
  max-width: 280px;
  justify-self: center;
}

.page-faq .version-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-card);
}

.page-faq .media-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock-grey);
  text-align: center;
}

/* 三步查收藏 */
.page-faq .faq-favorite {
  background: var(--paper);
}

.page-faq .favorite-figure {
  margin: 0 0 clamp(22px, 3vw, 32px);
}

.page-faq .favorite-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-line);
  background: var(--blue-mist);
}

.page-faq .favorite-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-step {
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--faq-line);
  overflow: hidden;
  transition: transform 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-step:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
}

.page-faq .faq-step summary {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 56px;
  padding: 12px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-step summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

.page-faq .step-no {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-pill);
  background: var(--blue-mist);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--blue-deep);
}

.page-faq .faq-step[open] .step-no {
  background: var(--wolfberry);
  color: var(--ink);
}

.page-faq .step-label {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .step-answer {
  padding: 0 18px 16px 66px;
}

.page-faq .step-answer p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

.page-faq .favorite-tip {
  margin: 22px 0 0;
  padding: 14px 18px;
  border-left: 4px solid var(--wolfberry);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--wolfberry-soft);
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

/* 分类错位网格 */
.page-faq .faq-cats {
  background: linear-gradient(180deg, var(--blue-mist) 0%, var(--paper) 100%);
}

.page-faq .cat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .cat-card {
  display: block;
  padding: 20px 20px 22px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--faq-line);
  text-decoration: none;
  transition: transform 0.16s var(--ease), border-color 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-faq .cat-card:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  box-shadow: var(--shadow-card);
}

.page-faq .cat-card:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .cat-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .cat-count {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue-deep);
}

.page-faq .cat-count span {
  margin-left: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--rock-grey);
}

.page-faq .cat-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--rock-grey);
}

/* 问答流 */
.page-faq .faq-qa {
  background: var(--paper);
}

.page-faq .qa-group {
  margin-bottom: clamp(28px, 4vw, 44px);
  padding-top: 6px;
}

.page-faq .qa-group:last-child {
  margin-bottom: 0;
}

.page-faq .qa-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.page-faq .qa-group-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 24px);
  font-weight: 700;
  color: var(--ink);
}

.page-faq .qa-group-head .mono-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rock-grey);
}

.page-faq .qa {
  border-top: 2px dashed var(--faq-line);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 52px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

.page-faq .qa-title {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .qa summary::after {
  content: "▸";
  flex: 0 0 auto;
  font-size: 14px;
  line-height: 1.9;
  color: var(--blue);
  transition: transform 0.16s var(--ease);
}

.page-faq .qa[open] summary::after {
  transform: rotate(90deg);
}

.page-faq .qa[open] .qa-title {
  color: var(--blue-deep);
}

.page-faq .qa-body {
  padding: 0 0 18px 0;
  max-width: 52em;
}

.page-faq .qa-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

/* 兜底联系 */
.page-faq .faq-help {
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-faq .help-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 100%);
  color: #fff;
  box-shadow: var(--shadow-float);
}

.page-faq .help-main h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: #fff;
}

.page-faq .help-main p {
  margin: 0 0 22px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
}

.page-faq .help-main .btn-primary {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  background: var(--wolfberry);
  color: var(--ink);
  border: 0;
}

.page-faq .help-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .help-links li {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.page-faq .help-links li:first-child {
  border-top: 0;
}

.page-faq .help-links a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.7;
  color: #fff;
  text-decoration: none;
  transition: transform 0.16s var(--ease), color 0.16s var(--ease);
}

.page-faq .help-links a:hover {
  transform: translateX(3px);
  color: var(--wolfberry-soft);
}

.page-faq .help-links a:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

@media (min-width: 640px) {
  .page-faq .favorite-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .step-answer {
    padding-left: 18px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-faq .version-grid {
    grid-template-columns: minmax(0, 1fr) 240px minmax(0, 1fr);
    gap: 28px;
    align-items: stretch;
  }

  .page-faq .version-figure {
    align-self: center;
  }

  .page-faq .cat-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .cat-card {
    grid-column: span 7;
  }

  .page-faq .cat-card:nth-child(even) {
    grid-column: span 5;
    transform: translateY(22px);
  }

  .page-faq .cat-card:nth-child(even):hover {
    transform: translateY(20px);
  }

  .page-faq .help-card {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: center;
  }

  .page-faq .qa-title {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .device-segmented .segmented-btn,
  .page-faq .version-card,
  .page-faq .faq-step,
  .page-faq .cat-card,
  .page-faq .qa summary::after,
  .page-faq .help-links a {
    transition: none;
  }

  .page-faq .device-segmented .segmented-btn:hover,
  .page-faq .version-card:hover,
  .page-faq .faq-step:hover,
  .page-faq .cat-card:hover,
  .page-faq .help-links a:hover {
    transform: none;
  }

  .page-faq .qa[open] summary::after {
    transform: none;
  }
}