/* ===== 怪好用在线工具 — 简洁、美观、易懂易找 ===== */

:root {
  /* 品牌色 — 爱马仕橙 */
  --primary: #F37021;
  --primary-light: #FFA366;
  --primary-pale: #FFF0E5;
  --primary-dark: #D45A10;
  --accent: #2563EB;
  --accent-light: #DBEAFE;

  /* 中性色 */
  --bg: #F5F6FA;
  --bg-card: #FFFFFF;
  --text: #1A1A2E;
  --text-secondary: #6B7280;
  --text-muted: #9CA3AF;
  --border: #E5E7EB;
  --border-light: #F3F4F6;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 2px 8px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1), 0 4px 8px rgba(0,0,0,0.04);

  /* 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* 功能色 */
  --success: #10B981;
  --success-bg: #ECFDF5;
  --warning: #F59E0B;
  --warning-bg: #FFFBEB;
  --danger: #EF4444;
  --danger-bg: #FEF2F2;

  /* 布局 */
  --sidebar-w: 230px;
  --header-h: 56px;
}

/* ===== 深色主题 ===== */
[data-theme="dark"] {
  --bg: #0F172A;
  --bg-card: #1E293B;
  --text: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border: #334155;
  --border-light: #1E293B;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --primary-pale: rgba(243,112,33,0.15);
  --accent-light: rgba(37,99,235,0.2);
  --success-bg: rgba(16,185,129,0.1);
  --warning-bg: rgba(245,158,11,0.1);
  --danger-bg: rgba(239,68,68,0.1);
}

/* ===== 全局重置 ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
}

/* ===== 顶部导航栏 ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
  background: var(--bg-card);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; z-index: 100;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; cursor: pointer;
}

.logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: bold;
  box-shadow: 0 2px 8px rgba(243,112,33,0.3);
}

.logo img {
  border-radius: 50%; object-fit: cover;
  box-shadow: 0 2px 8px rgba(243,112,33,0.25);
}

.logo-text {
  font-size: 17px; font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.3px;
}

.logo-sub {
  font-size: 10px; color: var(--text-muted); font-weight: 400;
  letter-spacing: 0.5px;
}

.header-actions {
  display: flex; align-items: center; gap: 8px;
}

.theme-toggle, .mobile-menu-btn {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-secondary); cursor: pointer;
  font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.theme-toggle:hover, .mobile-menu-btn:hover {
  background: var(--border-light); color: var(--text);
  border-color: var(--primary-light);
}
.mobile-menu-btn { display: none; }

/* ===== 布局 ===== */
.layout {
  display: flex;
  margin-top: var(--header-h);
  min-height: calc(100vh - var(--header-h));
}

/* ===== 侧边栏 ===== */
.sidebar {
  position: fixed; top: var(--header-h); left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  overflow-y: auto; z-index: 50;
  transition: transform 0.3s;
  padding: 6px 0 12px;
}
.sidebar::-webkit-scrollbar { width: 3px; }
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border); border-radius: 3px;
}
.sidebar::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

.nav-category {
  font-size: 10px; color: var(--text-muted);
  padding: 14px 18px 6px;
  text-transform: uppercase; letter-spacing: 1.5px; font-weight: 700;
}

.nav-item {
  display: flex; align-items: center; gap: 9px;
  margin: 1px 8px; padding: 8px 12px;
  color: var(--text-secondary); cursor: pointer;
  transition: all 0.2s;
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500;
  text-decoration: none;
}
.nav-item:hover {
  background: var(--primary-pale); color: var(--primary);
}
.nav-item.active {
  background: var(--primary);
  color: #fff; font-weight: 600;
  box-shadow: 0 2px 8px rgba(243,112,33,0.3);
}
.nav-item.active:hover { background: var(--primary-dark); }
.nav-icon { font-size: 15px; width: 22px; text-align: center; flex-shrink: 0; }

/* ===== 主内容区 ===== */
.main {
  margin-left: var(--sidebar-w);
  flex: 1; padding: 24px 28px;
  max-width: 1140px;
}

.tool-panel { display: none; }
.tool-panel.active {
  display: block;
  animation: fadeSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== 工具页头部 ===== */
.tool-header {
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--primary-pale);
}
.tool-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--primary-pale);
}
.tool-toolbar .tool-title {
  font-size: 24px; font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin: 0;
}
.tool-title {
  font-size: 30px; font-weight: 850;
  color: var(--text);
  letter-spacing: -1px;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.btn-share {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-pale);
  border: 1px solid var(--primary-pale);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn-share:hover {
  background: var(--primary);
  color: #fff;
}
.btn-share-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  font-size: 18px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.2s;
  vertical-align: middle;
  margin-left: 8px;
}
.btn-share-inline:hover {
  background: var(--primary-pale);
  border-color: var(--primary);
}
.share-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--primary);
  color: #fff;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: 0 8px 30px rgba(243, 112, 33, 0.35);
  pointer-events: none;
}
.share-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ===== Landing Pages 独立样式 ===== */
.landing-layout {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}
.landing-hero {
  text-align: center;
  padding: 48px 20px 32px;
  background: linear-gradient(135deg, var(--primary-pale) 0%, #fff 100%);
  border-radius: 16px;
  margin: 24px 0 20px;
}
.landing-title {
  font-size: 34px; font-weight: 850;
  color: var(--text);
  letter-spacing: -1px;
  margin: 0 0 12px;
}
.landing-subtitle {
  font-size: 16px; color: var(--text-secondary);
  max-width: 600px; margin: 0 auto;
  line-height: 1.7;
}
.landing-breadcrumb {
  font-size: 13px; color: var(--text-muted);
  margin-bottom: 20px;
}
.landing-breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}
.landing-breadcrumb a:hover {
  text-decoration: underline;
}
.landing-tool-area {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border);
  margin-bottom: 32px;
}
.landing-related {
  margin-bottom: 40px;
}
.related-title {
  font-size: 20px; font-weight: 700;
  color: var(--text);
  margin: 0 0 16px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.related-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}
.related-card:hover {
  border-color: var(--primary);
  background: var(--primary-pale);
}
.related-icon {
  font-size: 20px;
}
.related-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (max-width: 768px) {
  .landing-hero { padding: 32px 16px 24px; }
  .landing-title { font-size: 26px; }
  .landing-tool-area { padding: 16px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
.tool-desc {
  color: var(--text-secondary); margin-top: 6px;
  font-size: 15px; font-weight: 500;
  letter-spacing: 0.2px;
  display: flex; align-items: center; gap: 8px;
}
.tool-desc::before {
  content: '';
  display: inline-block;
  width: 4px; height: 4px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ===== 卡片 ===== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px; margin-bottom: 14px;
  border: 1px solid var(--border-light);
  transition: box-shadow 0.25s;
}
.card:hover { box-shadow: var(--shadow-md); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 5px;
  padding: 8px 18px; border-radius: var(--radius-sm);
  border: none; font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.97); }
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 2px 8px rgba(243,112,33,0.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(243,112,33,0.35);
}

.btn-success {
  background: var(--success); color: #fff;
  box-shadow: 0 2px 8px rgba(16,185,129,0.2);
}
.btn-success:hover { background: #059669; }

.btn-accent {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}
.btn-accent:hover { background: #1D4ED8; }

.btn-outline {
  background: transparent; color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary); color: #fff;
}

.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: 6px; }
.btn-xs { padding: 3px 8px; font-size: 11px; border-radius: 5px; }

/* ===== 表单 ===== */
label {
  display: block; font-weight: 600; margin-bottom: 5px;
  font-size: 13px; color: var(--text);
}

input, textarea, select {
  width: 100%; padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  background: var(--bg); color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  font-family: inherit;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-pale);
}

textarea {
  resize: vertical; min-height: 80px;
  font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
  line-height: 1.5;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

input[type="color"] {
  padding: 3px 6px; height: 38px; width: 54px;
  border-radius: var(--radius-sm); cursor: pointer;
}

.form-group { margin-bottom: 14px; }

.form-row {
  display: flex; gap: 14px; flex-wrap: wrap;
}

.form-row > * { flex: 1; min-width: 180px; }
.form-row > .flex-0 { flex: 0; min-width: auto; }

/* ===== 首页 ===== */
.homepage {
  text-align: center; padding: 40px 0 10px;
}

.hero-title {
  font-size: 42px; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
  letter-spacing: -1px;
}

.hero-desc {
  font-size: 15px; color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 520px; margin-left: auto; margin-right: auto;
}

/* 搜索框 */
.search-box {
  max-width: 480px; margin: 0 auto 28px;
}

.search-box input {
  padding: 13px 20px 13px 44px;
  font-size: 14px;
  border-radius: 50px;
  border: 2px solid var(--border);
  background: var(--bg-card);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 14px center;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-pale);
}

/* 分类标签 */
.cat-tabs {
  display: flex; gap: 6px; flex-wrap: wrap;
  justify-content: center; margin-bottom: 28px;
}

.cat-tab {
  padding: 6px 15px; border-radius: 50px;
  border: 1.5px solid var(--border);
  background: var(--bg-card); cursor: pointer;
  font-size: 12px; font-weight: 600;
  transition: all 0.2s; color: var(--text-secondary);
  white-space: nowrap;
}

.cat-tab:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.cat-tab.active {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(243,112,33,0.3);
}

/* 工具网格 */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(225px, 1fr));
  gap: 14px; margin-top: 8px;
}

.tool-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 22px 18px 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.tool-card:hover::before {
  transform: scaleX(1);
}

.tool-card-icon {
  font-size: 38px; margin-bottom: 12px;
  display: block;
  transition: transform 0.3s;
  filter: drop-shadow(0 2px 4px rgba(243,112,33,0.12));
}

.tool-card:hover .tool-card-icon {
  transform: scale(1.12);
}

.tool-card-title {
  font-size: 16px; font-weight: 750;
  margin-bottom: 6px; color: var(--text);
  letter-spacing: -0.2px;
  line-height: 1.3;
}

.tool-card-desc {
  font-size: 12.5px; color: var(--text-secondary);
  line-height: 1.45; font-weight: 500;
  background: var(--border-light);
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 结果展示 ===== */
.result-box {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
  font-size: 13px; line-height: 1.6;
  white-space: pre-wrap; word-break: break-all;
  min-height: 50px;
}

/* ===== 表格 ===== */
table {
  width: 100%; border-collapse: collapse;
  font-size: 13px;
}

th, td {
  padding: 9px 14px; text-align: left;
  border-bottom: 1px solid var(--border-light);
}

th {
  background: var(--primary-pale);
  font-weight: 700; font-size: 12px;
  color: var(--primary-dark);
  white-space: nowrap;
}

tr:hover { background: var(--bg); }
tr:last-child td { border-bottom: none; }

/* ===== 进度条 ===== */
.progress-bar {
  height: 8px; background: var(--border-light);
  border-radius: 4px; overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== 徽章 ===== */
.badge {
  display: inline-flex; align-items: center; gap: 3px;
  padding: 3px 9px; border-radius: 50px;
  font-size: 11px; font-weight: 600;
}

.badge-primary {
  background: var(--primary-pale); color: var(--primary);
}

.badge-success {
  background: var(--success-bg); color: var(--success);
}

.badge-warning {
  background: var(--warning-bg); color: var(--warning);
}

.badge-danger {
  background: var(--danger-bg); color: var(--danger);
}

/* ===== 提示框 ===== */
.tip-box {
  margin-top: 14px; padding: 11px 16px;
  background: var(--primary-pale);
  border-radius: var(--radius-sm);
  font-size: 12px; color: var(--primary-dark);
  line-height: 1.5;
  border: 1px solid rgba(243,112,33,0.1);
}

.tip-box a {
  color: var(--primary); font-weight: 600;
  text-decoration: underline;
}

/* ===== Canvas 容器 ===== */
canvas {
  max-width: 100%;
  border-radius: var(--radius-sm);
}

/* ===== 关联工具推荐 ===== */
.related-tools-section {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 2px dashed var(--border);
}

.related-tools-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.related-tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.related-tool-card:hover {
  border-color: var(--primary);
  background: var(--primary-pale);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(243,112,33,0.1);
}

.related-tool-icon {
  font-size: 24px;
  line-height: 1;
}

.related-tool-icon img {
  width: 24px; height: 24px;
}

.related-tool-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
}

.related-tool-desc {
  font-size: 10px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.3;
}

/* ===== 响应式 ===== */
@media (max-width: 860px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }
  .main {
    margin-left: 0; padding: 16px 14px;
  }
  .mobile-menu-btn { display: flex; }
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 13px; }
  .tool-grid {
    grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
    gap: 10px;
  }
  .tool-card { padding: 16px 12px 14px; }
  .tool-card-icon { font-size: 30px; }
  .tool-card-title { font-size: 14px; }
  .tool-card-desc { font-size: 11.5px; padding: 2px 8px; }
  .form-row > * { min-width: 100%; }
  .homepage { padding: 24px 0 10px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 24px; }
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .tool-card { padding: 14px 8px 12px; }
  .tool-card-icon { font-size: 26px; }
  .tool-card-title { font-size: 13px; }
  .tool-card-desc { font-size: 10.5px; padding: 2px 6px; }
  .tool-title { font-size: 24px; }
  .cat-tabs { gap: 4px; }
  .cat-tab { padding: 5px 10px; font-size: 11px; }
}

/* ===== 页脚 ===== */
.site-footer {
  text-align: center;
  padding: 20px 0 14px;
  margin-top: 32px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
}
.site-footer a {
  color: var(--text-secondary);
  text-decoration: none;
  margin: 0 8px;
  transition: color 0.2s;
}
.site-footer a:hover { color: var(--primary); }
.site-footer-links {
  line-height: 1.8;
}
.site-footer-icp {
  margin-top: 6px;
  font-size: 12px;
}
.site-footer-icp a {
  color: var(--text-secondary);
}
.site-footer-icp a:hover { color: var(--primary); }

/* ===== 响应式补充 ===== */
/* ===== 广告位容器 ===== */
.ad-slot {
  margin: 0 auto;
  overflow: hidden;
  clear: both;
}
.ad-slot-a1 { margin: 0 auto 16px; }
.ad-slot-a2 { margin: 8px auto 12px; }
.ad-slot-a3 { margin: 12px 8px 6px; }
.ad-slot-a4 { margin: 16px auto 0; }

@media (max-width: 860px) {
  .ad-slot-a3 { display: none; }
}

/* ===== 文档校对高亮 ===== */
mark.proofread-error {
  background: rgba(244,67,54,0.15);
  color: var(--danger);
  padding: 1px 3px;
  border-radius: 3px;
  cursor: help;
  text-decoration: underline wavy var(--danger);
  text-underline-offset: 3px;
}