:root {
  --primary: #0a7a66;
  --primary-dark: #085c4c;
  --primary-light: #e8f5f2;
  --bg: #f4f6f8;
  --card-bg: #ffffff;
  --text: #1f2329;
  --text-secondary: #5f6a7a;
  --text-tertiary: #8c96a6;
  --border: #e1e5eb;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding-bottom: 88px;
}

/* 顶部导航 */
.site-header {
  background: var(--primary);
  color: #fff;
  padding: 18px 0;
  box-shadow: 0 2px 10px rgba(10, 122, 102, 0.25);
}

.header-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.brand-text h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.header-meta {
  margin: 3px 0 0;
  font-size: 12px;
  opacity: 0.88;
}

/* 主容器 */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* 通用卡片 */
.search-card,
.notice-card,
.results-section,
.empty-state {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 18px;
  transition: box-shadow 0.2s ease;
}

.search-card:hover,
.notice-card:hover {
  box-shadow: var(--shadow-hover);
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 122, 102, 0.08);
}

.search-icon {
  display: flex;
  align-items: center;
  padding: 0 12px;
  color: var(--text-tertiary);
  font-size: 16px;
  background: #fafbfc;
  border-right: 1px solid var(--border);
}

.search-box input {
  flex: 1;
  padding: 13px 14px;
  border: none;
  font-size: 15px;
  outline: none;
  background: transparent;
  min-width: 0;
}

.search-box input::placeholder {
  color: var(--text-tertiary);
}

.search-box button {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.search-box button:hover {
  background: var(--primary-dark);
}

/* 筛选器 */
.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filters select,
.reset {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s;
}

.filters select {
  appearance: auto;
  min-width: 120px;
}

.filters select:hover,
.reset:hover {
  border-color: var(--primary);
}

.reset {
  color: var(--primary);
  border-color: var(--primary);
  background: #fff;
  font-weight: 500;
}

/* 热门标签 */
.hot-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.tag-label,
.history-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.tag {
  background: #f5f7f9;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 5px 13px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.tag:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: #c5e5de;
}

/* 搜索历史 */
.history {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.clear-history {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  font-size: 12px;
  cursor: pointer;
}

.clear-history:hover {
  color: var(--primary);
}

/* 检索边界声明 */
.notice-card h3 {
  margin: 0 0 14px;
  color: var(--primary);
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.notice-card h3::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 16px;
  background: var(--primary);
  border-radius: 2px;
}

.notice-card ul {
  margin: 0;
  padding-left: 18px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.notice-card li {
  margin-bottom: 7px;
}

.notice-card strong {
  color: var(--text);
  font-weight: 500;
}

/* 结果区 */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

.sort-bar {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sort-bar select {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text);
  background: #fff;
}

/* 结果条目 */
.result-item {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}

.result-item:last-child {
  border-bottom: none;
}

.result-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 8px;
  line-height: 1.45;
}

.result-title:hover {
  text-decoration: underline;
}

.result-title-static {
  color: var(--text);
  font-weight: 600;
}

.result-meta {
  font-size: 12.5px;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.result-meta span {
  margin-right: 0;
}

.result-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 10px;
}

.result-key-clauses {
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--primary-light);
  border-left: 3px solid var(--primary);
  padding: 10px 14px;
  border-radius: 0 6px 6px 0;
  line-height: 1.7;
}

.result-key-clauses strong {
  color: var(--primary-dark);
}

.result-actions {
  margin-top: 10px;
}

.result-link {
  font-size: 13px;
  color: var(--primary);
  text-decoration: none;
  border: 1px solid var(--primary);
  padding: 5px 12px;
  border-radius: 16px;
  display: inline-block;
  transition: all 0.2s;
}

.result-link:hover {
  background: var(--primary);
  color: #fff;
}

.result-link-disabled {
  font-size: 13px;
  color: var(--text-tertiary);
}

.result-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 500;
}

.result-badge-ima {
  background: #fff4e8;
  color: #c25e00;
  border: 1px solid #ffe0c0;
}

.result-link-ima {
  border-color: #c25e00;
  color: #c25e00;
}

.result-link-ima:hover {
  background: #c25e00;
  color: #fff;
}

/* 法规总结结果 */
.result-item-summary {
  border-left: 4px solid #d48806;
  background: #fffbe6;
  padding-left: 16px;
  margin-left: -4px;
  border-radius: 0 8px 8px 0;
}

.result-badge-summary {
  background: #fff3bf;
  color: #ad6800;
  border: 1px solid #fadb14;
}

/* 问答结果 */
.result-item-qa {
  border-left: 4px solid var(--primary);
  background: #f8fcfb;
  padding-left: 16px;
  margin-left: -4px;
  border-radius: 0 8px 8px 0;
}

.result-badge-qa {
  background: var(--primary-light);
  color: var(--primary-dark);
  border: 1px solid #c5e5de;
}

.result-qa-question {
  font-size: 15px;
  color: var(--text);
  margin: 6px 0 10px;
  font-weight: 500;
}

.result-qa-answer {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  background: #fff;
  border: 1px solid #dcede9;
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 10px;
  white-space: pre-wrap;
  word-break: break-word;
}

.result-link-qa {
  border-color: var(--primary);
  color: var(--primary);
}

.result-link-qa:hover {
  background: var(--primary);
  color: #fff;
}

mark {
  background: #fff3b0;
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
}

.pagination button,
.pagination span {
  padding: 7px 13px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text);
  transition: all 0.2s;
}

.pagination button:hover:not(:disabled):not(.active) {
  border-color: var(--primary);
  color: var(--primary);
}

.pagination button.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.pagination button:disabled {
  color: var(--text-tertiary);
  cursor: not-allowed;
  background: #f8f9fa;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 56px 24px;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 36px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.empty-state p {
  font-size: 15px;
  margin: 0;
}

/* 底部备案 */
.site-footer {
  text-align: center;
  padding: 24px 20px 100px;
  font-size: 13px;
  color: var(--text-tertiary);
}

.site-footer a {
  color: var(--text-tertiary);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--primary);
}

/* 底部固定操作栏 */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: #fff;
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.05);
  z-index: 50;
}

.bottom-nav button {
  flex: 1;
  padding: 15px;
  border: none;
  background: #fff;
  font-size: 15px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

.bottom-nav button:not(:last-child) {
  border-right: 1px solid var(--border);
}

.bottom-nav button:hover {
  background: #f8f9fa;
  color: var(--text);
}

.bottom-nav button.primary {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

.bottom-nav button.primary:hover {
  background: var(--primary-dark);
}

/* 悬浮帮助按钮 */
.fab {
  position: fixed;
  right: 20px;
  bottom: 78px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: #fff;
  color: var(--primary);
  font-size: 20px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  z-index: 40;
  transition: transform 0.2s, box-shadow 0.2s;
}

.fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
}

/* 反馈弹窗 */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-content {
  background: #fff;
  width: 100%;
  max-width: 440px;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.modal-content h3 {
  margin: 0 0 18px;
  font-size: 18px;
  color: var(--text);
}

.modal-field {
  margin-bottom: 16px;
  text-align: left;
}

.modal-label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 7px;
}

.modal-input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-top: 8px;
}

.radio-row {
  display: flex;
  gap: 24px;
}

.radio-item {
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.modal-content textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
}

.modal-content textarea:focus {
  border-color: var(--primary);
}

.modal-file {
  width: 100%;
  font-size: 13px;
  padding: 8px 0;
}

.feedback-result {
  margin-top: 14px;
  padding: 12px;
  background: var(--primary-light);
  border: 1px solid #c5e5de;
  color: var(--primary-dark);
  border-radius: 8px;
  font-size: 14px;
  text-align: center;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}

.modal-actions button {
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: opacity 0.2s;
}

.modal-actions button:hover {
  opacity: 0.9;
}

.modal-actions .secondary {
  background: #f0f2f5;
  color: var(--text);
}

.modal-actions button:not(.secondary) {
  background: var(--primary);
  color: #fff;
}

/* 帮助提示 */
.toast {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  padding: 22px 26px;
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
  z-index: 110;
  text-align: center;
  max-width: 320px;
}

.toast p {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.toast button {
  margin-top: 12px;
  padding: 8px 22px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
}

/* 加载中 */
.loading-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-tertiary);
  font-size: 14px;
}

/* 响应式 */
@media (max-width: 640px) {
  .brand-text h1 {
    font-size: 17px;
  }

  .header-meta {
    font-size: 11px;
  }

  .search-box {
    flex-wrap: wrap;
  }

  .search-box input {
    min-width: 100%;
  }

  .search-box button {
    width: 100%;
    padding: 12px;
  }

  .filters {
    gap: 8px;
  }

  .filters select {
    flex: 1;
    min-width: 0;
  }

  .results-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .container {
    padding: 16px 14px;
  }

  .search-card,
  .notice-card,
  .results-section,
  .empty-state {
    padding: 18px;
  }
}