/* ===== 页面: 支持中心 (page-faq) ===== */
.page-faq {
  --faq-step-size: 48px;
  --faq-step-font: 1.25rem;
  --faq-number-font: 4rem;
  --faq-progress-height: 6px;
}

/* 首屏英雄区 */
.page-faq .faq-hero {
  background-color: var(--color-bg-dark);
  padding: var(--space-xl) 0 var(--space-lg);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(0,200,83,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-faq .breadcrumb {
  margin-bottom: var(--space-lg);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}
.page-faq .breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}
.page-faq .breadcrumb ol li {
  display: inline;
}
.page-faq .breadcrumb ol li + li::before {
  content: '/';
  margin: 0 var(--space-xs);
  color: var(--color-text-secondary);
}
.page-faq .breadcrumb a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-faq .breadcrumb a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--color-text-on-dark);
}
.page-faq .faq-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 8vw, 4rem);
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-faq .faq-hero-lead {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-lg);
  max-width: 580px;
}
.page-faq .faq-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-md);
}
.page-faq .faq-index-card {
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-md) var(--space-md);
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-index-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}
.page-faq .faq-index-card:hover::after {
  transform: scaleX(1);
}
.page-faq .faq-index-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.page-faq .index-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
}
.page-faq .index-label {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-on-dark);
  font-weight: 500;
}
.page-faq .index-arrow {
  align-self: flex-end;
  color: var(--color-primary);
  font-size: 1.2rem;
  margin-top: var(--space-sm);
  transition: transform var(--transition-fast);
}
.page-faq .faq-index-card:hover .index-arrow {
  transform: translateX(4px);
}

/* 问题面板通用 */
.page-faq .faq-issue {
  padding: var(--space-xl) 0;
  scroll-margin-top: 80px;
}
.page-faq .panel-mid {
  background-color: var(--color-bg-mid);
}
.page-faq .issue-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.page-faq .issue-number {
  font-family: var(--font-heading);
  font-size: var(--faq-number-font);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 0.9;
  flex-shrink: 0;
  min-width: 1.2em;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}
.page-faq .issue-number:hover {
  opacity: 1;
}
.page-faq .issue-title-group {
  flex: 1;
}
.page-faq .issue-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 var(--space-xs);
  line-height: 1.1;
}
.page-faq .issue-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin: 0;
}
.page-faq .panel-mid .issue-heading {
  color: var(--color-white);
}
.page-faq .panel-mid .issue-desc {
  color: var(--color-text-secondary);
}

/* details 组件 */
.page-faq .faq-details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.02);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.page-faq .faq-details[open] {
  border-color: var(--color-primary);
}
.page-faq .faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  user-select: none;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-primary-light);
  list-style: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.page-faq .faq-summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-summary:hover {
  background: rgba(0,200,83,0.06);
  color: var(--color-primary);
}
.page-faq .summary-icon {
  font-size: 1.2rem;
  line-height: 1;
  transition: transform var(--transition-base);
  color: var(--color-text-secondary);
}
.page-faq .faq-details[open] .summary-icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}
.page-faq .faq-body {
  padding: 0 var(--space-lg) var(--space-lg);
  animation: faqFadeIn var(--transition-base) ease;
}
@keyframes faqFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 步骤导航 */
.page-faq .step-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  align-items: center;
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
}
.page-faq .step-nav-link {
  color: var(--color-secondary);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.page-faq .step-nav-link:hover {
  background: rgba(41,121,255,0.1);
  border-color: var(--color-secondary);
  text-decoration: underline;
}
.page-faq .step-nav-sep {
  color: var(--color-text-secondary);
  font-weight: 300;
}

/* 进度条 */
.page-faq .progress-track {
  margin-bottom: var(--space-lg);
  max-width: 320px;
}
.page-faq .progress-svg {
  display: block;
  width: 100%;
  height: var(--faq-progress-height);
}
.page-faq .progress-fill {
  animation: progressPulse 2s ease-in-out infinite;
}
@keyframes progressPulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* 步骤列表 */
.page-faq .step-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.page-faq .step-item {
  display: flex;
  gap: var(--space-md);
  scroll-margin-top: 100px;
  transition: background var(--transition-fast);
  padding: var(--space-sm);
  border-radius: var(--radius-md);
}
.page-faq .step-item:hover {
  background: rgba(255,255,255,0.03);
}
.page-faq .step-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: var(--faq-step-size);
}
.page-faq .step-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--faq-step-size);
  height: var(--faq-step-size);
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--faq-step-font);
  font-weight: 700;
  box-shadow: 0 0 0 4px rgba(255,109,0,0.2);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
}
.page-faq .step-item:hover .step-circle {
  transform: scale(1.05);
  box-shadow: 0 0 0 6px rgba(255,109,0,0.3);
}
.page-faq .step-line {
  width: 2px;
  flex: 1;
  min-height: 24px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-border));
  opacity: 0.5;
  margin: var(--space-xs) 0;
}
.page-faq .step-line-last {
  background: transparent;
  min-height: 8px;
}
.page-faq .step-content {
  flex: 1;
  min-width: 0;
}
.page-faq .step-title {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
  margin: 0 0 var(--space-xs);
}
.page-faq .step-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-on-dark);
  line-height: 1.6;
  margin: 0 0 var(--space-sm);
}
.page-faq .step-tip {
  font-size: 0.85rem;
  color: var(--color-primary-light);
  background: rgba(0,200,83,0.08);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  display: inline-block;
  border-left: 3px solid var(--color-primary);
  transition: background var(--transition-fast);
}
.page-faq .step-tip:hover {
  background: rgba(0,200,83,0.14);
}
.page-faq .step-tip::before {
  content: attr(data-hint) ': ';
  font-weight: 600;
  color: var(--color-primary);
}

/* 带图片的双栏步骤区 */
.page-faq .step-list-has-image {
  flex-direction: row;
  gap: var(--space-xl);
}
.page-faq .step-list-col {
  flex: 1;
  min-width: 0;
}
.page-faq .step-list-col-img {
  flex-shrink: 0;
  width: 300px;
}

/* 图片样式 */
.page-faq .faq-figure {
  margin: var(--space-lg) 0 0;
  text-align: center;
}
.page-faq .faq-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-dark);
  box-shadow: var(--shadow-md);
}
.page-faq .faq-img-portrait {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-dark);
  box-shadow: var(--shadow-lg);
}
.page-faq .figure-caption {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* 额外链接 */
.page-faq .faq-extra-link {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin: var(--space-md) 0 0;
}
.page-faq .faq-extra-link a {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 500;
}
.page-faq .faq-extra-link a:hover {
  text-decoration: underline;
}

/* 其他常见问题列表 */
.page-faq .other-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.page-faq .other-details {
  border-color: var(--color-border);
}
.page-faq .other-details .faq-summary {
  color: var(--color-text-on-dark);
  font-weight: 600;
  font-size: 1rem;
}
.page-faq .other-details .faq-summary:hover {
  color: var(--color-primary);
  background: rgba(0,200,83,0.05);
}
.page-faq .other-details .faq-body p {
  color: var(--color-text-on-dark);
  line-height: 1.7;
  margin: 0;
  font-size: 0.95rem;
}
.page-faq .other-details .faq-body a {
  color: var(--color-secondary);
}

/* CTA 区 */
.page-faq .faq-cta {
  background-color: var(--color-bg-dark);
  text-align: center;
  padding: var(--space-2xl) 0;
  position: relative;
  overflow: hidden;
}
.page-faq .faq-cta::before {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,109,0,0.10) 0%, transparent 70%);
  pointer-events: none;
}
.page-faq .cta-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 var(--space-md);
}
.page-faq .cta-text {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-lg);
  line-height: 1.6;
}
.page-faq .btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.1rem;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .page-faq {
    --faq-step-size: 40px;
    --faq-step-font: 1.05rem;
    --faq-number-font: 2.8rem;
  }
  .page-faq .faq-hero {
    padding: var(--space-lg) 0;
  }
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }
  .page-faq .faq-index-card {
    padding: var(--space-sm) var(--space-md);
  }
  .page-faq .index-num {
    font-size: 1.5rem;
  }
  .page-faq .issue-header {
    flex-direction: column;
    gap: var(--space-sm);
  }
  .page-faq .issue-number {
    font-size: var(--faq-number-font);
    line-height: 1;
  }
  .page-faq .step-list-has-image {
    flex-direction: column;
  }
  .page-faq .step-list-col-img {
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
  }
  .page-faq .faq-body {
    padding: 0 var(--space-md) var(--space-md);
  }
  .page-faq .faq-summary {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.95rem;
  }
  .page-faq .step-nav {
    font-size: 0.8rem;
  }
  .page-faq .step-title {
    font-size: 1rem;
  }
  .page-faq .step-text {
    font-size: 0.9rem;
  }
  .page-faq .cta-heading {
    font-size: 1.6rem;
  }
  .page-faq .faq-cta {
    padding: var(--space-xl) 0;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-index-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .faq-hero-title {
    font-size: 2rem;
  }
  .page-faq .step-list {
    gap: var(--space-md);
  }
  .page-faq .step-item {
    gap: var(--space-sm);
  }
  .page-faq .step-list-col-img {
    max-width: 200px;
  }
}