.page-faq {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.7;
  padding-bottom: 4rem;
}

/* 面包屑 */
.page-faq .breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 0;
  font-family: var(--font-meta);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}
.page-faq .breadcrumb-item {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.3s var(--ease-standard);
}
.page-faq .breadcrumb-item:hover {
  color: var(--color-purple);
}
.page-faq .breadcrumb-sep {
  color: var(--color-grid);
  margin: 0 0.5rem;
}
.page-faq .breadcrumb-current {
  color: var(--color-purple);
  font-weight: 600;
}

/* Hero 区 */
.page-faq .faq-hero {
  padding: 2.5rem 1.25rem 2rem;
  max-width: var(--container-width);
  margin: 0 auto;
}
.page-faq .faq-hero-copy .section-index {
  font-family: var(--font-meta);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--color-pink);
  text-transform: uppercase;
  margin-bottom: 0.625rem;
}
.page-faq .faq-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-blue);
  margin: 0 0 1.125rem;
}
.page-faq .faq-hero .lead {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-ink);
  max-width: 46rem;
  margin: 0 0 1.5rem;
}
.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 2rem;
}
.page-faq .stat-card {
  background: var(--color-panel-dark);
  padding: 1rem 0.875rem;
  border-left: 3px solid var(--color-green);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}
.page-faq .stat-num {
  display: block;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.75rem;
  color: var(--color-green);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.page-faq .stat-label {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.25rem;
  letter-spacing: 0.03em;
}

/* 热门问题区 */
.page-faq .faq-hot {
  padding: 2.5rem 1.25rem;
  border-top: 1px solid var(--color-grid);
  border-bottom: 1px solid var(--color-grid);
  background: linear-gradient(180deg, var(--color-paper) 0%, var(--color-panel-light) 100%);
}
.page-faq .faq-hot-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
}
.page-faq .faq-index-panel {
  background: var(--color-panel-dark);
  color: #fff;
  padding: 1.5rem;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}
.page-faq .index-heading {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.page-faq .index-heading .section-index {
  font-family: var(--font-meta);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-pink);
}
.page-faq .index-heading .section-title {
  font-family: var(--font-title);
  font-size: 1.75rem;
  color: #fff;
  margin: 0;
}
.page-faq .index-note {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 1.25rem;
}
.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.page-faq .faq-index-list li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.page-faq .index-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.3s var(--ease-standard), padding-left 0.3s var(--ease-standard);
}
.page-faq .index-link::after {
  content: "→";
  color: rgba(255, 255, 255, 0.3);
  transition: color 0.3s var(--ease-standard);
}
.page-faq .index-link:hover {
  color: var(--color-green);
  padding-left: 0.5rem;
}
.page-faq .index-link:hover::after {
  color: var(--color-green);
}
.page-faq .index-actions {
  margin-top: 1.25rem;
}
.page-faq .faq-index-panel .btn-ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}
.page-faq .faq-index-panel .btn-ghost:hover {
  border-color: var(--color-green);
  color: var(--color-green);
}
.page-faq .faq-alert-visual {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  margin-top: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 问答折叠面板 */
.page-faq .faq-answer-panel {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-faq .faq-answer-panel .acc {
  background: var(--color-panel-light);
  border: 1px solid var(--color-grid);
  transition: border-color 0.3s var(--ease-standard), box-shadow 0.3s var(--ease-standard);
}
.page-faq .faq-answer-panel .acc:hover {
  border-color: var(--color-purple);
}
.page-faq .faq-answer-panel .acc[open] {
  border-color: var(--color-purple);
  box-shadow: 0 4px 0 rgba(106, 13, 173, 0.06);
}
.page-faq .faq-answer-panel .acc summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.page-faq .faq-answer-panel .acc summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-answer-panel .acc summary:hover {
  background: #eae5d4;
}
.page-faq .faq-answer-panel .acc[open] summary {
  border-bottom: 1px solid var(--color-grid);
  background: #eae5d4;
}
.page-faq .faq-answer-panel .acc-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  position: relative;
}
.page-faq .faq-answer-panel .acc-icon::before,
.page-faq .faq-answer-panel .acc-icon::after {
  content: "";
  position: absolute;
  background: var(--color-purple);
  transition: transform 0.3s var(--ease-standard);
}
.page-faq .faq-answer-panel .acc-icon::before {
  width: 1px;
  height: 100%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}
.page-faq .faq-answer-panel .acc-icon::after {
  width: 100%;
  height: 1px;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}
.page-faq .faq-answer-panel .acc[open] .acc-icon::before {
  transform: translateX(-50%) scaleY(0);
}
.page-faq .faq-answer-panel .acc-title {
  flex: 1;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-ink);
  line-height: 1.4;
}
.page-faq .faq-answer-panel .badge {
  background: var(--color-purple);
  color: #fff;
  font-family: var(--font-meta);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.5rem;
  white-space: nowrap;
  text-transform: uppercase;
  flex-shrink: 0;
}
.page-faq .faq-answer-panel .acc-content {
  padding: 1rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--color-muted);
}
.page-faq .faq-answer-panel .acc-content p {
  margin: 0;
}

/* 换设备绑定指南 */
.page-faq .faq-guide {
  background: var(--color-panel-dark);
  color: #fff;
  padding: 2.5rem 1.25rem 3rem;
  position: relative;
  overflow: hidden;
}
.page-faq .faq-guide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 15%, rgba(57, 255, 20, 0.08) 0%, transparent 40%);
  pointer-events: none;
}
.page-faq .faq-guide::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-green) 0%, var(--color-pink) 50%, var(--color-purple) 100%);
}
.page-faq .faq-guide .section-heading,
.page-faq .guide-lead,
.page-faq .guide-timeline,
.page-faq .guide-figure {
  position: relative;
  z-index: 1;
}
.page-faq .faq-guide .section-heading {
  max-width: var(--container-width);
  margin: 0 auto 0.625rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}
.page-faq .faq-guide .section-index {
  font-family: var(--font-meta);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-green);
}
.page-faq .faq-guide .section-title {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: #fff;
  margin: 0;
}
.page-faq .guide-lead {
  max-width: var(--container-width);
  margin: 0 auto 2rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
}
.page-faq .guide-timeline {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.page-faq .guide-step {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  align-items: start;
}
.page-faq .step-num-wrap {
  width: 3.5rem;
  height: 3.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 2px solid var(--color-green);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: faq-glow 4s ease-in-out infinite alternate;
}
@keyframes faq-glow {
  0% {
    box-shadow: 0 0 0 rgba(57, 255, 20, 0);
  }
  100% {
    box-shadow: 0 0 16px rgba(57, 255, 20, 0.25);
  }
}
.page-faq .step-num {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.75rem;
  color: var(--color-green);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.page-faq .step-content {
  padding-top: 0.25rem;
}
.page-faq .step-title {
  font-family: var(--font-title);
  font-size: 1.125rem;
  color: #fff;
  margin: 0 0 0.375rem;
}
.page-faq .step-content > p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 0 0 0.625rem;
}
.page-faq .step-connector {
  width: 2px;
  height: 2rem;
  margin-left: 1.75rem;
  transform: translateX(-50%);
  background: linear-gradient(180deg, var(--color-green) 0%, rgba(57, 255, 20, 0.1) 100%);
}

/* 步骤内折叠 */
.page-faq .step-content .acc {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  max-width: 34rem;
}
.page-faq .step-content .acc summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.page-faq .step-content .acc summary::-webkit-details-marker {
  display: none;
}
.page-faq .step-content .acc summary::before {
  content: "+";
  font-family: var(--font-meta);
  color: var(--color-green);
  font-size: 0.875rem;
  font-weight: 700;
}
.page-faq .step-content .acc[open] summary::before {
  content: "−";
}
.page-faq .step-content .acc-content {
  padding: 0.375rem 0.75rem 0.75rem;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.page-faq .step-content .acc-content ul {
  margin: 0.5rem 0;
  padding-left: 1.25rem;
}
.page-faq .step-content .acc-content li {
  margin-bottom: 0.25rem;
}

/* 流程图 */
.page-faq .guide-figure {
  max-width: var(--container-width);
  margin: 2rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}
.page-faq .guide-flow-img {
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: block;
  margin: 0 auto;
}
.page-faq .guide-figure figcaption {
  font-family: var(--font-meta);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.5);
  text-align: right;
  padding-top: 0.5rem;
}

/* 账号安全提示 */
.page-faq .faq-security {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
}
.page-faq .faq-security .section-heading {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.page-faq .faq-security .section-index {
  font-family: var(--font-meta);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-pink);
}
.page-faq .faq-security .section-title {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--color-blue);
  margin: 0;
}
.page-faq .security-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-faq .security-card {
  background: var(--color-panel-light);
  border: 1px solid var(--color-grid);
  border-top: 4px solid var(--color-purple);
  padding: 1.375rem;
  transition: transform 0.3s var(--ease-standard), box-shadow 0.3s var(--ease-standard);
}
.page-faq .security-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(26, 26, 26, 0.08);
}
.page-faq .security-icon {
  display: inline-block;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--color-pink);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.5rem;
  line-height: 1;
}
.page-faq .security-card h3 {
  font-family: var(--font-title);
  font-size: 1.0625rem;
  color: var(--color-blue);
  margin: 0 0 0.5rem;
}
.page-faq .security-card p {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.65;
  margin: 0;
}
.page-faq .security-cta {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  text-align: center;
}
.page-faq .security-cta p {
  margin: 0;
  font-size: 0.9375rem;
  color: #fff;
}
.page-faq .security-cta a {
  color: var(--color-green);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 20, 0.4);
}

/* 桌面端布局 */
@media (min-width: 768px) {
  .page-faq {
    padding-bottom: 0;
  }
  .page-faq .breadcrumb {
    padding: 1.75rem 2rem 0;
  }
  .page-faq .faq-hero {
    padding: 4rem 2rem 3rem;
  }
  .page-faq .faq-hero-inner {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    align-items: center;
  }
  .page-faq .faq-hero-stats {
    margin-top: 0;
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .page-faq .stat-card {
    padding: 1.125rem;
  }
  .page-faq .stat-num {
    font-size: 2.125rem;
  }
  .page-faq .faq-hot {
    padding: 4rem 2rem;
  }
  .page-faq .faq-hot-layout {
    grid-template-columns: 4fr 8fr;
    gap: 2rem;
    align-items: start;
  }
  .page-faq .faq-index-panel {
    padding: 2rem;
  }
  .page-faq .faq-answer-panel {
    gap: 1rem;
  }
  .page-faq .faq-answer-panel .acc summary {
    padding: 1rem 1.25rem;
  }
  .page-faq .faq-guide {
    padding: 4rem 2rem 4.5rem;
  }
  .page-faq .guide-step {
    grid-template-columns: 5rem 1fr;
    gap: 1.5rem;
  }
  .page-faq .step-num-wrap {
    width: 5rem;
    height: 5rem;
  }
  .page-faq .step-num {
    font-size: 2.5rem;
  }
  .page-faq .step-connector {
    margin-left: 2.5rem;
    height: 2.75rem;
  }
  .page-faq .step-content {
    padding-top: 0.5rem;
  }
  .page-faq .step-title {
    font-size: 1.5rem;
  }
  .page-faq .step-content > p {
    font-size: 0.9375rem;
    max-width: 36rem;
  }
  .page-faq .faq-security {
    padding: 4rem 2rem;
  }
  .page-faq .security-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}