/* ========================================
   下载中心页
   设计 token 依赖 nav.css（--blue-500 / --gray-* / --navbar-height / --transition-*）
   与 help-feedback.css / news.css 保持同一版式：面包屑 + 页头 + 分区
   ======================================== */

/* 内容容器：与首页/新闻页一致，最大 1500px 居中 */
.dl-container {
  width: min(100% - 40px, 1500px);
  margin: 0 auto;
}

/* ========================================
   面包屑导航（与 help-feedback.css 保持一致）
   ======================================== */
.dl-breadcrumb {
  margin-top: var(--navbar-height);
  padding: 14px 0;
  background-color: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.dl-breadcrumb a {
  font-size: 13px;
  color: var(--gray-500);
  letter-spacing: 0.5px;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.dl-breadcrumb a:hover {
  color: var(--gray-800);
}

.dl-bc-separator {
  margin: 0 8px;
  font-size: 13px;
  color: var(--gray-300);
}

.dl-bc-current {
  font-size: 13px;
  color: var(--gray-800);
  letter-spacing: 0.5px;
}

/* ========================================
   页头 + 搜索
   ======================================== */
.dl-header {
  padding: 64px 0 48px;
  background-color: #ffffff;
  text-align: center;
}

.dl-header h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  color: #333333;
  letter-spacing: 3px;
}

.dl-header-line {
  display: block;
  width: 48px;
  height: 3px;
  margin: 16px auto 20px;
  background-color: var(--blue-500);
}

.dl-header p {
  max-width: 720px;
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.9;
  color: var(--gray-500);
}

.dl-search {
  display: flex;
  max-width: 560px;
  margin: 28px auto 0;
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  background-color: #ffffff;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.dl-search:focus-within {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.12);
}

.dl-search__input {
  flex: 1;
  min-width: 0;
  padding: 12px 22px;
  border: 0;
  background: transparent;
  font-size: 14px;
  color: var(--gray-800);
}

.dl-search__input:focus {
  outline: none;
}

.dl-search__submit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 24px;
  border: 0;
  background-color: var(--blue-500);
  color: #ffffff;
  font-size: 14px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dl-search__submit:hover {
  background-color: #1a4f8a;
}

.dl-search__submit svg {
  width: 16px;
  height: 16px;
}

/* ========================================
   筛选条
   ======================================== */
.dl-filters {
  padding: 24px 0;
  background-color: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.dl-filter-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 8px 0;
}

.dl-filter-row + .dl-filter-row {
  border-top: 1px dashed var(--gray-200);
}

.dl-filter-label {
  flex: none;
  width: 76px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  letter-spacing: 1px;
}

.dl-filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.dl-filter-option {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13px;
  color: var(--gray-600);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.dl-filter-option:hover {
  color: var(--blue-500);
  border-color: rgba(43, 108, 176, 0.35);
}

.dl-filter-option.is-active {
  background-color: var(--blue-500);
  border-color: var(--blue-500);
  color: #ffffff;
}

.dl-filter-count {
  font-size: 11px;
  opacity: 0.75;
}

/* ========================================
   资料列表
   ======================================== */
.dl-section {
  padding: 48px 0 64px;
  background-color: #ffffff;
}

.dl-result-count {
  margin: 0 0 18px;
  font-size: 13px;
  color: var(--gray-500);
}

.dl-result-count strong {
  color: var(--blue-500);
}

.dl-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dl-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  background-color: #ffffff;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.dl-item:hover {
  border-color: rgba(43, 108, 176, 0.35);
  box-shadow: 3px 3px 14px rgba(0, 0, 0, 0.08);
}

.dl-item__icon {
  display: grid;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 10px;
  background-color: #ebf4ff;
  color: var(--blue-500);
  place-items: center;
}

.dl-item__icon svg {
  width: 21px;
  height: 21px;
}

.dl-item__info {
  min-width: 0;
  flex: 1;
}

.dl-item__title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: #333333;
  line-height: 1.5;
}

.dl-item__desc {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.7;
}

.dl-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--gray-400);
}

.dl-item__tag {
  padding: 2px 9px;
  border-radius: 4px;
  background-color: var(--gray-100);
  color: var(--gray-600);
}

.dl-item__button {
  flex: none;
  padding: 8px 20px;
  border: 1px solid var(--blue-500);
  border-radius: 6px;
  color: var(--blue-500);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dl-item__button:hover {
  background-color: var(--blue-500);
  color: #ffffff;
}

.dl-item__placeholder {
  flex: none;
  padding: 8px 20px;
  border: 1px dashed var(--gray-300);
  border-radius: 6px;
  color: var(--gray-400);
  font-size: 13px;
}

/* ========================================
   分页
   ======================================== */
.dl-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 36px;
}

.dl-page-link {
  padding: 8px 20px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 13px;
  color: var(--gray-600);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.dl-page-link:hover {
  color: var(--blue-500);
  border-color: var(--blue-500);
}

.dl-page-status {
  font-size: 13px;
  color: var(--gray-500);
}

/* ========================================
   空状态
   ======================================== */
.dl-empty {
  padding: 56px 20px;
  border: 1px dashed var(--gray-200);
  border-radius: 12px;
  text-align: center;
}

.dl-empty h2 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: #333333;
}

.dl-empty p {
  margin: 0;
  font-size: 13px;
  color: var(--gray-500);
}

.dl-empty__reset {
  display: inline-block;
  margin-top: 18px;
  font-size: 13px;
  color: var(--blue-500);
  text-decoration: none;
}

.dl-empty__reset:hover {
  text-decoration: underline;
}

/* ========================================
   服务引导
   ======================================== */
.dl-cta {
  background-color: var(--gray-50);
  text-align: center;
}

.dl-cta__title {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 700;
  color: #333333;
  letter-spacing: 2px;
}

.dl-cta__text {
  max-width: 640px;
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.9;
  color: var(--gray-500);
}

.dl-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 24px;
}

.dl-cta__phone,
.dl-cta__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

a.dl-cta__phone {
  background-color: var(--blue-500);
  color: #ffffff;
}

.dl-cta__phone:hover {
  background-color: #1a4f8a;
}

.dl-cta__phone svg {
  width: 17px;
  height: 17px;
}

.dl-cta__link {
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
}

.dl-cta__link:hover {
  border-color: var(--blue-500);
  color: var(--blue-500);
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 900px) {
  .dl-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .dl-header {
    padding: 44px 0 32px;
  }

  .dl-header h1 {
    font-size: 23px;
  }

  .dl-filter-row {
    flex-direction: column;
    gap: 8px;
  }

  .dl-filter-label {
    width: auto;
  }

  .dl-item {
    flex-wrap: wrap;
  }

  .dl-item__info {
    flex-basis: calc(100% - 58px);
  }

  .dl-item__button,
  .dl-item__placeholder {
    flex: 1;
    text-align: center;
  }
}