/**
 * main.css - 主样式文件
 * 
 * 包含页面布局、各组件的具体样式定义
 * 依赖 design-system.css 中定义的设计令牌
 */

/* ==================== 1. 页面布局 ==================== */

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main {
  flex: 1;
  padding: var(--space-lg) var(--space-md);
  max-width: var(--container-max-width);
  width: 100%;
  margin: 0 auto;
}


/* ==================== 2. 头部导航 (Header) ==================== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
}
.header__logo:hover {
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  gap: var(--space-md);
}

.header__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}
.header__link--active,
.header__link:hover {
  color: var(--color-primary);
}


/* ==================== 3. 页脚 (Footer) ==================== */

.footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: var(--space-lg) var(--space-md);
}

.footer__inner {
  text-align: center;
}

.footer__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.footer__update-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.footer__disclaimer {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}


/* ==================== 4. 首页 (Homepage) ==================== */

.homepage__hero {
  text-align: center;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
}

.homepage__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
  line-height: var(--line-height-tight);
}

.homepage__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}


/* ---- 筛选栏 ---- */

.filter-bar {
  margin-bottom: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* 隐藏搜索框（国家数量较少，暂不需要） */
.filter-bar__search {
  display: none;
}

.filter-bar__tags {
  display: none;
}


/* ---- 国家卡片网格 ---- */

.country-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  padding-bottom: var(--space-xl);
}


/* ---- 单个国家卡片 ---- */

.country-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base),
              border-color var(--transition-base);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}

.country-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.country-card:active {
  transform: translateY(0);
}

/* 即将上线国家卡片 - 柔和的预告风格 */
.country-card--disabled {
  --coming-bg: linear-gradient(135deg, #fafafa 0%, #f8fafc 50%, #f1f5f9 100%);
  --coming-border: #e2e8f0;
  --coming-accent: #94a3b8;
  
  background: var(--coming-bg);
  border: 1px dashed var(--coming-border);
  cursor: default;
  position: relative;
}

.country-card--disabled::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 10px,
    rgba(148, 163, 184, 0.03) 10px,
    rgba(148, 163, 184, 0.03) 20px
  );
  pointer-events: none;
  border-radius: inherit;
}

.country-card--disabled:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
  border-color: #cbd5e1;
}

.country-card--disabled .country-card__name {
  color: var(--color-text-secondary);
}

.country-card--disabled .country-card__flag {
  filter: grayscale(15%) saturate(0.9);
  opacity: 0.85;
}

/* 暗色模式适配 */
.dark .country-card--disabled,
:root:not(.light) .country-card--disabled {
  --coming-bg: linear-gradient(135deg, #1e293b 0%, #1e293b 50%, #0f172a 100%);
  --coming-border: #334155;
  --coming-accent: #64748b;
  
  background: var(--coming-bg);
  border-color: var(--coming-border);
}

.dark .country-card--disabled::before,
:root:not(.light) .country-card--disabled::before {
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 10px,
    rgba(100, 116, 139, 0.05) 10px,
    rgba(100, 116, 139, 0.05) 20px
  );
}

.country-card__flag {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.country-card__name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.country-card__tags {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
}

/* 通用标签基础样式 */
.tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: 1;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* 平台标签 */
.tag--platform {
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
}

/* 即将上线标签 - 更柔和的预告风格 */
.tag--coming-soon {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
  color: #64748b;
  font-weight: 500;
  font-style: normal;
  border: 1px solid #cbd5e1;
  position: relative;
  overflow: hidden;
}

.tag--coming-soon::before {
  content: '🚧';
  margin-right: 4px;
  font-size: 11px;
}

/* 暗色模式 */
.dark .tag--coming-soon,
:root:not(.light) .tag--coming-soon {
  background: linear-gradient(135deg, #334155 0%, #1e293b 100%);
  color: #94a3b8;
  border-color: #475569;
}

.country-card__info {
  display: flex;
  gap: var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: auto;
}

.country-card__earliest-slot {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

.country-card__arrow {
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.country-card:hover .country-card__arrow {
  opacity: 1;
  transform: translateY(-50%) translateX(2px);
}


/* ==================== 5. 国家详情页 (Country Detail) ==================== */

.country-detail {
  padding-bottom: var(--space-xl);
}


/* ---- 国家头部信息卡 ---- */

.country-header-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-xl);
  position: relative;
}

.back-btn {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.back-btn:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-bg);
}

.country-header-card__flag {
  font-size: 4rem;
  line-height: 1;
  margin-bottom: var(--space-md);
  text-align: center;
}

.country-header-card__name {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--space-lg);
  color: var(--color-text-primary);
}

.country-header-card__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.meta-item {
  padding: var(--space-md);
  background-color: var(--color-background);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.meta-item__label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--font-weight-medium);
}

.meta-item__value {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.meta-link {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-xs);
}
.meta-link:hover {
  text-decoration: underline;
}

/* 费用分项展示 */
.meta-fee__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-fee__item {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.meta-fee__label {
  color: var(--color-text-muted);
  font-weight: 400;
}

.meta-fee__amount {
  color: var(--color-text-primary);
  font-weight: 600;
}

.meta-fee__official-link {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid var(--color-border-light, #e5e7eb);
  display: inline-block;
}
.meta-fee__official-link:hover {
  text-decoration: underline;
}

.meta-fee__note {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.meta-fee__url {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  text-decoration: none;
  margin-left: var(--space-xs);
}
.meta-fee__url:hover {
  text-decoration: underline;
}

/* 难度徽章 */
.difficulty-badge {
  display: inline-block;
  padding: 2px var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}
.difficulty-badge--easy {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}
.difficulty-badge--medium {
  background-color: var(--color-warning-bg);
  color: #d97706;
}
.difficulty-badge--hard {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}


/* ---- 进度条 ---- */

.progress-section {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-divider);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.progress-label,
.progress-percent {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.progress-percent {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.progress-bar {
  width: 100%;
  height: 10px;
  background-color: var(--color-divider);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  width: 0%;
}


/* ==================== 6. 步骤时间线 (Steps Timeline) ==================== */

.steps-timeline {
  margin-bottom: var(--space-xl);
}

.steps-timeline__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
  padding-left: var(--space-sm);
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}


/* ---- 单个步骤项 ---- */

.step-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.step-item:hover {
  border-color: var(--color-primary-light);
}

.step-item--completed {
  border-left: 4px solid var(--color-success);
}
.step-item--completed .step-item__title {
  text-decoration: line-through;
  color: var(--color-text-secondary);
}

.step-item--expanded {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

/* 步骤头部（可点击展开/收起） */
.step-item__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  min-height: 64px;
}

.step-item__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.step-item--completed .step-item__number {
  background-color: var(--color-success);
  color: #ffffff;
}

.step-item__title-area {
  flex: 1;
  min-width: 0;
}

.step-item__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
}

.step-item__time {
  display: inline-block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.step-item__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.expand-icon {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.step-item--expanded .expand-icon {
  transform: rotate(180deg);
}


/* 步骤详情内容（可展开） */
.step-item__body {
  padding: 0 var(--space-lg) var(--space-lg);
  animation: slideDown 0.25s ease-out forwards;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step-item__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-md);
  padding-left: calc(var(--space-md) + 32px + var(--space-md)); /* 对齐标题文字 */
}

/* 描述中的内联链接 */
.inline-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-primary-light);
  text-underline-offset: 2px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
  word-break: break-all;
}

.inline-link:hover {
  color: var(--color-primary-dark);
  text-decoration-color: var(--color-primary);
}


/* ---- 材料清单块 ---- */

/* 官网清单跳转按钮 */
.checklist-link-wrapper {
  margin-bottom: var(--space-sm);
  padding-left: 0;
}

.materials-block,
.tips-block,
.warnings-block {
  margin-bottom: var(--space-md);
  padding-left: calc(var(--space-md) + 32px + var(--space-md));
}

.materials-block__title,
.tips-block__title,
.warnings-block__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.materials-list,
.tips-list,
.warnings-list {
  list-style: disc inside;
  padding-left: var(--space-sm);
}

.materials-list li,
.tips-list li,
.warnings-list li {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  padding: var(--space-xs) 0;
  padding-left: var(--space-sm);
  position: relative;
}

.materials-list li::before {
  content: '•';
  color: var(--color-primary);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* 材料项来源链接 */
.material-source {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}
.material-source a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}
.material-source a:hover {
  text-decoration: underline;
}

.tips-list li::before {
  content: '💡';
  font-size: var(--font-size-xs);
  position: absolute;
  left: 0;
}

.warnings-block {
  background-color: transparent;
  border: 1px solid #f0dca0;
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}

.warnings-block__title {
  color: #d97706;
}

.warnings-list li::before {
  content: '⚠️';
  font-size: var(--font-size-xs);
  position: absolute;
  left: 0;
}

/* ---- 实操指导卡片（Practical Guide）---- */

.practical-guide {
  margin-top: var(--space-sm);
  padding: var(--space-md);
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
  border-radius: var(--radius-md);
}

.practical-guide__title {
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-sm);
}

.practical-guide__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.pg-section {
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border-left: 3px solid #6366f1;
}

.pg-section__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #3730a3;
  margin-bottom: var(--space-sm);
}

.pg-section__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pg-item {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  padding: var(--space-xs) 0;
  position: relative;
  padding-left: 1.2em;
}

.pg-item::before {
  content: '›';
  color: #6366f1;
  font-weight: bold;
  position: absolute;
  left: 0;
}

.pg-item strong {
  color: #3730a3;
  font-weight: var(--font-weight-semibold);
}


/* ==================== 7. 底部操作栏 (Action Bar) ==================== */

.action-bar {
  display: flex;
  justify-content: center;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-divider);
}


/* ==================== 8. 响应式设计 ==================== */

/* 平板及以下 */
@media (max-width: 768px) {
  .homepage__title {
    font-size: var(--font-size-2xl);
  }

  .homepage__subtitle {
    font-size: var(--font-size-base);
  }

  .country-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-sm);
  }

  .country-header-card {
    padding: var(--space-lg) var(--space-md);
  }

  .country-header-card__meta {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-sm);
  }

  .back-btn {
    position: static;
    display: inline-flex;
    margin-bottom: var(--space-sm);
  }

  .country-header-card__name {
    font-size: var(--font-size-xl);
  }

  .step-item__description,
  .materials-block,
  .tips-block,
  .warnings-block {
    padding-left: 0;
  }
}

/* 手机竖屏 */
@media (max-width: 480px) {
  :root {
    --header-height: 56px;
  }

  .main {
    padding: var(--space-md) var(--space-sm);
  }

  .homepage__hero {
    padding: var(--space-lg) var(--space-sm) var(--space-md);
  }

  .country-grid {
    grid-template-columns: 1fr; /* 手机端单列显示，更易阅读 */
  }

  .country-header-card__meta {
    grid-template-columns: 1fr 1fr;
  }

  .filter-bar__tags {
    gap: 4px;
  }

  .tag-btn {
    font-size: 11px;
    padding: 2px var(--space-xs);
  }
}


/* ==================== 8.5 图片压缩工具 ==================== */

.image-compress {
  max-width: 720px;
  margin: 0 auto;
}

.compress-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.compress-header__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-xs);
}

.compress-header__subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* 上传区域 */
.upload-zone {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-lg);
  padding: var(--space-xxl) var(--space-lg);
  text-align: center;
  transition: all 0.2s ease;
  cursor: pointer;
  background: #f8fafc;
  margin-bottom: var(--space-lg);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--color-primary);
  background: #eef2ff;
}

.upload-zone__icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.upload-zone__text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xs);
}

.upload-zone__link {
  color: var(--color-primary);
  cursor: pointer;
  text-decoration: underline;
  font-weight: var(--font-weight-semibold);
}

.upload-zone__link:hover {
  color: #4338ca;
}

.upload-zone__hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* 压缩面板 */
.compress-panel {
  animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

@media (max-width: 600px) {
  .preview-grid {
    grid-template-columns: 1fr;
  }
}

.preview-item {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.preview-item__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  padding: var(--space-sm) var(--space-md);
  background: #f1f5f9;
  text-align: center;
  margin: 0;
}

.preview-item img {
  width: 100%;
  max-height: 300px;
  object-fit: contain;
  display: block;
  background: repeating-conic-gradient(#f1f5f9 0% 25%, white 0% 50%) 50% / 20px 20px;
}

.preview-info {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: var(--space-sm) var(--space-md);
  margin: 0;
  text-align: center;
}

/* 压缩控制 */
.compress-controls {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.control-group {
  margin-bottom: var(--space-md);
}

.control-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: #e2e8f0;
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.3);
  transition: transform 0.15s ease;
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.select-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  background: white;
  cursor: pointer;
}

.select-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.control-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid #e2e8f0;
}

.btn--success {
  background-color: #059669;
  color: white;
  border-color: #059669;
}

.btn--success:hover:not(:disabled) {
  background-color: #047857;
}

.btn--success:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}


/* ==================== 9. 领区查询组件（v3.5 递交材料步骤） ==================== */

.submission-centers {
  margin-top: var(--space-md);
  padding: var(--space-lg);
  background: linear-gradient(135deg, #f0fdf4 0%, #f0f9ff 50%, #fefce8 100%);
  border: 1px solid var(--color-primary-light, #c7d2fe);
  border-radius: var(--radius-lg);
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}

.submission-centers__header {
  margin-bottom: var(--space-md);
}

.submission-centers__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.submission-centers__select-wrapper {
  margin-bottom: var(--space-md);
}

.submission-centers__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.submission-centers__select {
  width: 100%;
  max-width: 360px;
  padding: var(--space-sm) var(--space-md);
  border: 1.5px solid var(--color-border, #cbd5e1);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  background: white;
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: auto;
}

.submission-centers__select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* 结果展示区 */
.submission-centers__result {
  animation: slideDown 0.25s ease-out forwards;
}

.region-info-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  border-left: 4px solid var(--color-primary);
}

.region-info-card__name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.region-info-card__coverage {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* 签证中心地址列表 */
.center-list {
  display: grid;
  gap: var(--space-sm);
}

.center-card {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: box-shadow var(--transition-fast);
}

.center-card:hover {
  box-shadow: var(--shadow-sm);
}

.center-card__city {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.center-card__name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.center-card__address {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 2px;
}

.center-card__hours {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.center-card__link {
  display: inline-block;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-xs);
}
.center-card__link:hover {
  text-decoration: underline;
}

.submission-centers__tip {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: rgba(254, 243, 199, 0.6);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: #92400e;
}

/* 递签当天流程 */
.day-process {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px dashed var(--color-divider);
}

.day-process__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.day-process__flow {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-sm);
  text-align: center;
}

.day-process__tips {
  list-style: none;
  padding: 0;
  margin: 0;
}

.day-process__tips li {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  padding: var(--space-xs) 0;
  padding-left: 1.2em;
  position: relative;
  line-height: var(--line-height-relaxed);
}

.day-process__tips li::before {
  content: '•';
  color: var(--color-warning, #d97706);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* 响应式：领区查询组件 */
@media (max-width: 768px) {
  .submission-centers {
    margin-left: 0;
    padding: var(--space-md);
  }

  .submission-centers__select {
    max-width: 100%;
  }
}


/* ==================== 10. v3.9 新增样式：费用简化 / 三色分级 / 材料分类 / 最早可约 / 祝福语 ==================== */

/* ---- 费用展示简化按钮（v3.9 #1）---- */
.fee-official-btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.fee-official-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ---- 最早可预约时间独立板块（v3.10）---- */
.earliest-slots-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.earliest-slots-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.earliest-slots-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.earliest-slots-updated {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.earliest-slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

/* 单个城市卡片 */
.slot-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm) var(--space-xs);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.slot-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.slot-card__region {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.slot-card__date {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* 最早标签 */
.slot-card__badge {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--color-success);
  color: white;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

/* 颜色编码：按日期早晚 */
.slot-card--earliest {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border-color: var(--color-success);
}

.slot-card--earliest .slot-card__date {
  color: var(--color-success);
}

.slot-card--soon {
  background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
  border-color: #eab308;
}

.slot-card--soon .slot-card__date {
  color: #a16207;
}

.slot-card--normal {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-color: var(--color-primary);
}

.slot-card--late {
  background: var(--color-surface);
  border-color: var(--color-border);
  opacity: 0.85;
}

/* 板块底部 */
.earliest-slots-footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-sm);
  margin-top: var(--space-sm);
}

.earliest-slots-source {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  text-decoration: none;
}

.earliest-slots-source:hover {
  text-decoration: underline;
}

/* 暗色模式 */
.dark .earliest-slots-section,
:root:not(.light) .earliest-slots-section {
  background: var(--color-surface);
}

.dark .slot-card--earliest,
:root:not(.light) .slot-card--earliest {
  background: linear-gradient(135deg, #052e16 0%, #14532d 100%);
  border-color: var(--color-success);
}

.dark .slot-card--soon,
:root:not(.light) .slot-card--soon {
  background: linear-gradient(135deg, #422006 0%, #713f12 100%);
  border-color: #eab308;
}

.dark .slot-card--normal,
:root:not(.light) .slot-card--normal {
  background: linear-gradient(135deg, #0c1929 0%, #1e3a5f 100%);
  border-color: var(--color-primary);
}

/* 响应式 */
@media (max-width: 640px) {
  .earliest-slots-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .slot-card {
    padding: var(--space-xs);
  }

  .slot-card__date {
    font-size: var(--font-size-sm);
  }
}

@media (max-width: 400px) {
  .earliest-slots-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---- 三色分级注意事项（v3.9 #2）---- */
.color-coded-notes {
  margin-top: var(--space-md);
  padding: var(--space-lg);
  background: linear-gradient(135deg, #fef2f2, #fffbeb, #f0fdf4);
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: var(--radius-lg);
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}
.color-coded-notes__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-md) 0;
}
.color-coded-notes__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}
.color-coded-card {
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.color-coded-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.color-coded-card--red {
  background: linear-gradient(180deg, #fef2f2 0%, #fee2e2 100%);
  border: 1px solid #fca5a5;
}
.color-coded-card--yellow {
  background: linear-gradient(180deg, #fffbeb 0%, #fef3c7 100%);
  border: 1px solid #fcd34d;
}
.color-coded-card--green {
  background: linear-gradient(180deg, #f0fdf4 0%, #dcfce7 100%);
  border: 1px solid #86efac;
}
.color-coded-card__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin: 0 0 var(--space-sm) 0;
}
.color-coded-card--red .color-coded-card__label { color: #dc2626; }
.color-coded-card--yellow .color-coded-card__label { color: #d97706; }
.color-coded-card--green .color-coded-card__label { color: #16a34a; }
.color-coded-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.color-coded-card__list li {
  font-size: var(--font-size-xs);
  line-height: var(--line-height-relaxed);
  padding: 2px 0;
  padding-left: 1em;
  position: relative;
  color: var(--color-text-secondary);
}
.color-coded-card--red .color-coded-card__list li::before { content: '❌'; position: absolute; left: 0; }
.color-coded-card--yellow .color-coded-card__list li::before { content: '⚠️'; position: absolute; left: 0; }
.color-coded-card--green .color-coded-card__list li::before { content: '✨'; position: absolute; left: 0; }

@media (max-width: 768px) {
  .color-coded-notes { margin-left: 0; padding: var(--space-md); }
  .color-coded-notes__grid { grid-template-columns: 1fr; gap: var(--space-sm); }
}

/* ---- 材料分类切换（v3.9 #11）---- */
.material-categories {
  margin-bottom: var(--space-md);
}
.material-categories__switch {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}
.material-categories__btn {
  padding: var(--space-sm) var(--space-lg);
  border: 1.5px solid var(--color-border, #cbd5e1);
  border-radius: var(--radius-full);
  background: white;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  outline: none;
}
.material-categories__btn:hover {
  border-color: var(--color-primary-light, #c7d2fe);
  color: var(--color-primary);
}
.material-categories__btn.is-active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.material-categories__content {
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}
.material-category-item {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding: var(--space-xs) 0;
  border-bottom: 1px dashed rgba(203, 213, 225, 0.5);
}
.material-category-item:last-child { border-bottom: none; }
.material-category-item__name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  min-width: 160px;
  flex-shrink: 0;
}
.material-category-item__desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  flex-grow: 1;
}
.material-category-item__source {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  flex-shrink: 0;
}
.material-category-item__source:hover { text-decoration: underline; }

/* ---- 查询进度链接（v3.9 #9）---- */
.tracking-link {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border: 1px solid #93c5fd;
  border-radius: var(--radius-md);
  text-align: center;
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}
.tracking-link__btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  transition: opacity var(--transition-fast);
}
.tracking-link__btn:hover { opacity: 0.9; }
.tracking-link__note {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ---- 祝福语卡片（v3.9 #13）---- */
.blessing-card {
  margin-top: var(--space-lg);
  padding: var(--space-lg) var(--space-xl);
  background: linear-gradient(135deg, #fdf4ff, #fae8ff, #f5f3ff);
  border: 2px solid #d8b4fe;
  border-radius: var(--radius-lg);
  text-align: center;
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}
.blessing-card__text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: #7c3aed;
  margin: 0;
  line-height: var(--line-height-relaxed);
}

@media (max-width: 768px) {
  .tracking-link,
  .blessing-card {
    margin-left: 0;
  }
}


/* ==================== 11. 打印样式（可选） ==================== */

@media print {
  .header,
  .footer,
  .action-bar,
  .step-item__actions {
    display: none !important;
  }

  body {
    background: white;
  }

  .country-header-card,
  .step-item {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}


/* ==================== 9. 步骤模块 UI 风格（原 v3.12-color-optimization.css） ==================== */

/* ============================================
   1. 注意事项 (warnings-block) - 柔和内敛版
   ============================================ */
.warnings-block {
  background: #fffbf0;
  border: 1px solid #f0dca0;
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}

.warnings-block__title {
  font-size: 13px;
  font-weight: 600;
  color: #a16207;
  margin-bottom: var(--space-xs);
}

.warnings-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.warnings-list li {
  font-size: 13px;
  color: #713f12;
  line-height: 1.6;
  padding: 2px 0;
  padding-left: 1.3em;
  position: relative;
  font-weight: 400;
}

.warnings-list li::before {
  content: '▸';
  color: #ca8a04;
  font-weight: normal;
  position: absolute;
  left: 0;
  font-size: 13px;
}

/* 暗色模式 */
.dark .warnings-block,
:root:not(.light) .warnings-block {
  background: rgba(120, 53, 15, 0.15);
  border-color: rgba(245, 158, 11, 0.25);
}
.dark .warnings-block__title,
:root:not(.light) .warnings-block__title { color: #fcd34d; }
.dark .warnings-list li,
:root:not(.light) .warnings-list li { color: #fef3c7; }


/* ============================================
   2. 预约递签时间 (submission-centers)
   ============================================ */
.submission-centers {
  margin-top: var(--space-sm);
  padding: var(--space-md);
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}

.submission-centers__title {
  font-size: 14px;
  font-weight: 600;
  color: #334155;
  margin: 0 0 var(--space-sm) 0;
}

.submission-centers__label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #475569;
  margin-bottom: 4px;
}

.submission-centers__select {
  width: 100%;
  max-width: 320px;
  padding: 6px 12px;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  font-size: 13px;
  background: white;
  color: #334155;
  cursor: pointer;
}

.center-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 8px;
}

.center-card__city {
  font-size: 14px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 2px;
}

.center-card__name {
  font-size: 13px;
  font-weight: 500;
  color: #475569;
  margin-bottom: 2px;
}

.center-card__address {
  font-size: 12px;
  color: #64748b;
  line-height: 1.5;
}

/* 暗色模式 */
.dark .submission-centers,
:root:not(.light) .submission-centers {
  background: rgba(30, 41, 59, 0.5);
  border-color: rgba(148, 163, 184, 0.2);
}
.dark .center-card,
:root:not(.light) .center-card {
  background: rgba(30, 41, 59, 0.7);
  border-color: rgba(148, 163, 184, 0.15);
}


/* ============================================
   3. 签证材料 (materials-block)
   ============================================ */
.materials-block {
  margin-bottom: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  padding-left: calc(var(--space-md) + 32px + var(--space-md));
  background: #f6fdf9;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
}

.materials-block__title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: #15803d;
}

.materials-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.materials-list li {
  font-size: 13px;
  color: #166534;
  line-height: 1.6;
  padding: 2px 0;
  padding-left: 1.3em;
  position: relative;
  font-weight: 400;
}

.materials-list li::before {
  content: '✓';
  color: #16a34a;
  font-weight: normal;
  position: absolute;
  left: 0;
  font-size: 13px;
}

/* 材料来源链接 */
.material-source {
  font-size: 12px;
  color: #64748b;
  margin-top: 4px;
}
.material-source a {
  color: #15803d;
  text-decoration: none;
}
.material-source a:hover { text-decoration: underline; }

/* 材料中的压缩工具链接 */
.material-compress-link { font-size: 12px; }
.compress-tool-link {
  color: var(--color-primary, #2563eb);
  font-weight: 500;
  text-decoration: none;
}
.compress-tool-link:hover { text-decoration: underline; }

/* 暗色模式 */
.dark .materials-block,
:root:not(.light) .materials-block {
  background: rgba(22, 101, 52, 0.1);
  border-color: rgba(74, 222, 128, 0.2);
}
.dark .materials-block__title,
:root:not(.light) .materials-block__title { color: #86efac; }
.dark .materials-list li,
:root:not(.light) .materials-list li { color: #bbf7d0; }


/* ============================================
   4. 小贴士 (tips-block)
   ============================================ */
.tips-block {
  margin-bottom: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  padding-left: calc(var(--space-md) + 32px + var(--space-md));
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
}

.tips-block__title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: #1d4ed8;
}

.tips-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tips-list li {
  font-size: 13px;
  color: #1e40af;
  line-height: 1.6;
  padding: 2px 0;
  padding-left: 1.3em;
  position: relative;
  font-weight: 400;
}

.tips-list li::before {
  content: '•';
  color: #3b82f6;
  font-weight: normal;
  position: absolute;
  left: 0;
  font-size: 14px;
}

/* 暗色模式 */
.dark .tips-block,
:root:not(.light) .tips-block {
  background: rgba(29, 78, 216, 0.08);
  border-color: rgba(96, 165, 250, 0.2);
}
.dark .tips-block__title,
:root:not(.light) .tips-block__title { color: #93c5fd; }
.dark .tips-list li,
:root:not(.light) .tips-list li { color: #bfdbfe; }


/* ============================================
   5. 实操指导 (practical-guide)
   ============================================ */
.practical-guide {
  margin-top: var(--space-sm);
  padding: var(--space-md);
  background: #faf5ff;
  border: 1px solid #e9d5ff;
  border-radius: var(--radius-md);
  margin-left: calc(var(--space-md) + 32px + var(--space-md));
}

.practical-guide__title {
  font-size: 14px;
  font-weight: 600;
  color: #7c3aed;
  margin-bottom: var(--space-sm);
}

.practical-guide__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pg-section {
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  border-left: 3px solid #a78bfa;
  margin-bottom: 4px;
}

.pg-section:last-child { margin-bottom: 0; }

.pg-section__title {
  font-size: 13px;
  font-weight: 600;
  color: #6d28d9;
  margin-bottom: 4px;
}

.pg-section__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pg-item {
  font-size: 13px;
  color: #5b21b6;
  line-height: 1.55;
  padding: 1px 0;
  padding-left: 1em;
  position: relative;
  font-weight: 400;
}

.pg-item::before {
  content: '›';
  color: #8b5cf6;
  font-weight: normal;
  position: absolute;
  left: 0;
  font-size: 14px;
}

.pg-item strong {
  font-weight: 600;
}

/* 暗色模式 */
.dark .practical-guide,
:root:not(.light) .practical-guide {
  background: rgba(91, 33, 182, 0.08);
  border-color: rgba(167, 139, 250, 0.2);
}
.dark .pg-section,
:root:not(.light) .pg-section {
  background: rgba(30, 41, 59, 0.6);
  border-left-color: #a78bfa;
}
.dark .pg-section__title,
:root:not(.light) .pg-section__title { color: #c4b5fd; }
.dark .pg-item,
:root:not(.light) .pg-item { color: #ddd6fe; }


/* ============================================
   6. 响应式（步骤模块）
   ============================================ */
@media (max-width: 768px) {
  .warnings-block,
  .materials-block,
  .tips-block,
  .practical-guide,
  .submission-centers {
    margin-left: 0;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .material-categories {
    padding: var(--space-md);
  }
}