/* ========== 变量与主题 ========== */
:root {
  --primary: #2b6cb0;
  --primary-dark: #1a365d;
  --primary-light: #4299e1;
  --accent: #ed8936;
  --bg: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-gradient: linear-gradient(135deg, #f0f4f8 0%, #f8fafc 50%, #eef2f7 100%);
  --text: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

[data-theme="dark"] {
  --primary: #63b3ed;
  --primary-dark: #90cdf4;
  --primary-light: #4299e1;
  --bg: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1a2332 50%, #0c1424 100%);
  --text: #f1f5f9;
  --text-secondary: #cbd5e0;
  --text-muted: #94a3b8;
  --border: #334155;
  --shadow: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.5);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.3), 0 1px 3px rgba(0,0,0,0.2);
}

* { 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-gradient);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.7;
  transition: var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

/* ========== 导航栏 ========== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248,250,252,0.8);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
}
[data-theme="dark"] .navbar { background: rgba(15,23,42,0.8); }

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.2s;
}
.nav-link:hover, .nav-link.active {
  background: var(--bg-secondary);
  color: var(--primary);
  transform: translateY(-1px);
}

.nav-vip {
  background: linear-gradient(135deg, #f6e05e, #ed8936);
  color: #744210 !important;
  font-weight: 700 !important;
  border-radius: 20px !important;
  padding: 8px 16px !important;
}
.nav-vip:hover {
  background: linear-gradient(135deg, #ecc94b, #dd6b20) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(237,137,54,0.3);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 16px;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.theme-toggle:hover { background: var(--bg-secondary); transform: rotate(20deg); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

/* ========== 主内容 ========== */
.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 40px 20px;
}

/* ========== Hero 区域 ========== */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius);
  color: white;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
}
.hero h1 {
  font-size: 3rem;
  margin-bottom: 16px;
  position: relative;
}
.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 32px;
  position: relative;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  position: relative;
}
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}
.btn-primary {
  background: white;
  color: var(--primary-dark);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: white; }
.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-danger { background: #e53e3e; color: white; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }

/* ========== 区块标题 ========== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  position: relative;
  padding-left: 16px;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--primary);
  border-radius: 2px;
}

/* ========== 文章卡片 ========== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow-card);
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.article-card .category {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-secondary);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.article-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  line-height: 1.4;
}
.article-card .summary {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.article-meta span { display: flex; align-items: center; gap: 4px; }

/* ========== 工具卡片 ========== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}
.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow-card);
}
.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.tool-card.disabled { opacity: 0.6; }
.tool-card-featured {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  color: white;
}
.tool-card-featured h3 { color: white; }
.tool-card-featured p { color: rgba(255,255,255,0.85); }
.tool-card-featured .tool-icon {
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
}
.tool-card-featured .btn-primary {
  background: white;
  color: #667eea;
}
.tool-card-featured:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(102,126,234,0.4);
}
.tool-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: white;
}
.tool-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.tool-card p { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 16px; }
.tool-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 2px 8px;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  border-radius: 10px;
}

/* ========== 文章列表页 ========== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
  align-items: center;
}
.search-box {
  flex: 1;
  min-width: 200px;
  position: relative;
}
.search-box input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}
.search-box input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(43,108,176,0.1); }
.search-box::before {
  content: '🔍';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
}
.category-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.category-tab {
  padding: 8px 16px;
  border-radius: 20px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: none;
  cursor: pointer;
  font-size: 0.88rem;
  transition: var(--transition);
}
.category-tab:hover { background: var(--border); }
.category-tab.active { background: var(--primary); color: white; }

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.tag-item {
  padding: 4px 12px;
  background: var(--bg-secondary);
  border-radius: 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.tag-item:hover { background: var(--primary); color: white; }
.tag-item.active { background: var(--primary); color: white; }

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
}
.page-btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}
.page-btn:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.page-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ========== 文章详情 ========== */
.article-detail {
  max-width: 800px;
  margin: 0 auto;
}
.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-header h1 {
  font-size: 2.2rem;
  margin-bottom: 16px;
  line-height: 1.3;
}
.article-header .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.article-content {
  font-size: 1.05rem;
  line-height: 1.9;
}
.article-content h1, .article-content h2, .article-content h3 {
  margin: 32px 0 16px;
  line-height: 1.3;
}
.article-content h2 { font-size: 1.6rem; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.article-content h3 { font-size: 1.3rem; }
.article-content p { margin-bottom: 16px; }
.article-content ul, .article-content ol { margin: 16px 0; padding-left: 24px; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 20px;
  margin: 20px 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}
.article-content code {
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: 'Consolas', 'Monaco', monospace;
}
.article-content pre {
  background: #1a202c;
  color: #e2e8f0;
  padding: 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: 20px 0;
}
.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}
.article-content th, .article-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content th { background: var(--bg-secondary); font-weight: 600; }
.article-content img { max-width: 100%; border-radius: var(--radius-sm); }

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 32px 0;
}
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-nav a {
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.article-nav a:hover { background: var(--border); }
.article-nav .label { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 4px; }
.article-nav .title { font-weight: 600; color: var(--text); }

/* ========== 评论区 ========== */
.comments-section {
  max-width: 800px;
  margin: 48px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.comments-section h2 { margin-bottom: 24px; }
.comment-form {
  background: var(--bg-secondary);
  padding: 20px;
  border-radius: var(--radius);
  margin-bottom: 32px;
}
.comment-form textarea {
  width: 100%;
  min-height: 100px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  resize: vertical;
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  margin-bottom: 12px;
}
.comment-form textarea:focus { border-color: var(--primary); }
.comment-form .guest-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}
.comment-form input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  outline: none;
}
.comment-list { display: flex; flex-direction: column; gap: 20px; }
.comment-item {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.comment-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.comment-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
}
.comment-author { font-weight: 600; }
.comment-date { font-size: 0.8rem; color: var(--text-muted); }
.comment-content { color: var(--text-secondary); margin-bottom: 8px; }
.comment-replies {
  margin-top: 12px;
  padding-left: 20px;
  border-left: 2px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ========== 关于页 ========== */
.about-page {
  max-width: 800px;
  margin: 0 auto;
}
.about-hero {
  text-align: center;
  margin-bottom: 48px;
}
.about-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
}
.about-hero h1 { font-size: 2rem; margin-bottom: 8px; }
.about-hero .subtitle { color: var(--text-secondary); font-size: 1.1rem; }
.about-section { margin-bottom: 40px; }
.about-section h2 { font-size: 1.4rem; margin-bottom: 16px; }
.about-section p { color: var(--text-secondary); margin-bottom: 12px; }
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.skill-tag {
  padding: 8px 18px;
  background: var(--bg-secondary);
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.stat-card {
  text-align: center;
  padding: 24px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
}
.stat-card .number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}
.stat-card .label { font-size: 0.88rem; color: var(--text-muted); margin-top: 4px; }

/* ========== 联系页 ========== */
.contact-page {
  max-width: 600px;
  margin: 0 auto;
}
.contact-page h1 { text-align: center; margin-bottom: 8px; }
.contact-page .desc { text-align: center; color: var(--text-secondary); margin-bottom: 32px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.92rem;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
  font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43,108,176,0.1);
}
.form-group textarea { min-height: 150px; resize: vertical; }

/* ========== 登录注册页 ========== */
.auth-page {
  max-width: 420px;
  margin: 40px auto;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.auth-page h1 { text-align: center; margin-bottom: 8px; }
.auth-page .desc { text-align: center; color: var(--text-secondary); margin-bottom: 28px; }
.auth-page .btn { width: 100%; margin-top: 8px; }
.auth-page .switch { text-align: center; margin-top: 20px; font-size: 0.9rem; color: var(--text-secondary); }

/* ========== 后台管理 ========== */
.admin-layout { display: flex; min-height: calc(100vh - 64px); }
.admin-sidebar {
  width: 220px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  flex-shrink: 0;
}
.admin-sidebar a {
  display: block;
  padding: 12px 24px;
  color: var(--text-secondary);
  transition: var(--transition);
  border-left: 3px solid transparent;
}
.admin-sidebar a:hover, .admin-sidebar a.active {
  background: var(--bg-card);
  color: var(--primary);
  border-left-color: var(--primary);
}
.admin-content {
  flex: 1;
  padding: 32px;
  overflow-x: auto;
}
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.admin-header h1 { font-size: 1.6rem; }
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}
.dashboard-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.dashboard-card .label { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 8px; }
.dashboard-card .value { font-size: 2rem; font-weight: 700; color: var(--primary); }
.dashboard-card .value.warning { color: var(--accent); }

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
}
.admin-table th, .admin-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.admin-table th { background: var(--bg-secondary); font-weight: 600; font-size: 0.88rem; }
.admin-table tr:hover { background: var(--bg-secondary); }
.admin-table .actions { display: flex; gap: 8px; flex-wrap: nowrap; min-width: 180px; }
.admin-table .actions button { writing-mode: horizontal-tb !important; text-orientation: mixed !important; white-space: nowrap !important; flex-shrink: 0 !important; display: inline-block !important; width: auto !important; min-width: 60px !important; padding: 6px 14px !important; }
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 600;
}
.badge-published { background: #c6f6d5; color: #22543d; }
.badge-draft { background: #fed7d7; color: #742a2a; }
.badge-pending { background: #feebc8; color: #7b341e; }
.badge-approved { background: #c6f6d5; color: #22543d; }
.badge-admin { background: #bee3f8; color: #2a4365; }
.badge-reader { background: #e2e8f0; color: #2d3748; }

.editor-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  min-height: 500px;
}
.editor-area textarea {
  width: 100%;
  min-height: 500px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  font-family: 'Consolas', monospace;
  font-size: 0.9rem;
  resize: vertical;
  outline: none;
}
.editor-preview {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  overflow-y: auto;
  max-height: 600px;
}

/* ========== 工具 Demo ========== */
.tool-demo {
  max-width: 700px;
  margin: 0 auto;
}
.tool-demo h1 { margin-bottom: 24px; }
.tool-demo-area {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.counter-result {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.counter-item {
  text-align: center;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}
.counter-item .num { font-size: 1.8rem; font-weight: 700; color: var(--primary); }
.counter-item .lbl { font-size: 0.82rem; color: var(--text-muted); }

.color-picker-demo { display: flex; flex-direction: column; gap: 20px; }
.color-preview {
  height: 120px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.color-inputs { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

/* ========== 页脚 ========== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 48px 0 0;
  margin-top: 64px;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}
.footer-section h3 { margin-bottom: 12px; color: var(--text); }
.footer-section h4 { margin-bottom: 12px; color: var(--text); }
.footer-section p { color: var(--text-secondary); font-size: 0.9rem; }
.footer-section a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 4px 0;
}
.footer-section a:hover { color: var(--primary); }
.footer-bottom {
  text-align: center;
  padding: 20px;
  margin-top: 32px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  top: 80px;
  right: 20px;
  padding: 14px 24px;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  transform: translateX(120%);
  transition: transform 0.3s ease;
  max-width: 320px;
}
.toast.show { transform: translateX(0); }
.toast.success { background: #38a169; }
.toast.error { background: #e53e3e; }

/* ========== 加载动画 ========== */
.loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.loading::after {
  content: '';
  display: inline-block;
  width: 30px;
  height: 30px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-top: 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 16px; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 99;
  }
  .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { width: 100%; padding: 12px 16px; }
  .nav-right { width: 100%; justify-content: space-between; margin-left: 0; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
  
  .hero { padding: 48px 20px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-buttons .btn { width: 200px; }
  
  .articles-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr 1fr; }
  
  .article-header h1 { font-size: 1.6rem; }
  .article-nav { grid-template-columns: 1fr; }
  .comment-form .guest-fields { grid-template-columns: 1fr; }
  
  .footer-container { grid-template-columns: 1fr; gap: 24px; }
  
  .admin-layout { flex-direction: column; }
  .admin-sidebar {
    width: 100%;
    display: flex;
    overflow-x: auto;
    padding: 0;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .admin-sidebar a { white-space: nowrap; border-left: none; border-bottom: 3px solid transparent; }
  .admin-sidebar a:hover, .admin-sidebar a.active { border-left: none; border-bottom-color: var(--primary); }
  .admin-content { padding: 20px 16px; }
  
  .editor-area { grid-template-columns: 1fr; }
  .editor-area textarea { min-height: 300px; }
  .editor-preview { max-height: 400px; }
  
  .auth-page { padding: 24px; margin: 20px; }
  
  .main-content { padding: 24px 16px; }
}

@media (max-width: 480px) {
  .tools-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-grid { grid-template-columns: 1fr 1fr; }
}

/* ========== 天气栏 ========== */
.weather-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.weather-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.92rem;
}
.weather-city { font-weight: 600; color: var(--primary); }
.weather-date { color: var(--text-muted); }
.weather-type { background: var(--bg-secondary); padding: 4px 12px; border-radius: 12px; }
.weather-temp { font-size: 1.2rem; font-weight: 700; color: var(--accent); }
.weather-wind { color: var(--text-secondary); }
.weather-tips { color: var(--text-muted); font-size: 0.85rem; }
.weather-select {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  outline: none;
}

/* ========== 热点新闻 ========== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.news-card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}
.news-card ul {
  list-style: none;
  padding: 0;
}
.news-card li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--bg-secondary);
}
.news-card li:last-child { border-bottom: none; }
.news-card .rank {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  color: var(--text-muted);
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 600;
  flex-shrink: 0;
}
.news-card .rank-top {
  background: var(--accent);
  color: white;
}
.news-card a {
  color: var(--text);
  font-size: 0.9rem;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.news-card a:hover { color: var(--primary); }
.news-card .hot-value {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 10px;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .weather-bar { flex-direction: column; align-items: flex-start; }
  .weather-info { gap: 10px; }
  .news-grid { grid-template-columns: 1fr; }
}

/* ========== 测绘工具 ========== */
.survey-container { max-width: 800px; }

/* ========== 测绘工具分类导航 ========== */
.survey-categories { display: flex; flex-direction: column; gap: 8px; }
.survey-category { background: var(--bg-card); border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }
.survey-category.active { border-color: var(--primary); }
.category-title { padding: 12px 16px; font-weight: 600; cursor: pointer; background: var(--bg-secondary); transition: background 0.2s; }
.category-title:hover { background: var(--primary); color: white; }
.category-tools { display: flex; flex-direction: column; gap: 2px; padding: 8px; }
.tool-btn { padding: 8px 12px; text-align: left; background: transparent; border: none; border-radius: 6px; cursor: pointer; font-size: 0.9rem; color: var(--text); transition: all 0.2s; display: flex; justify-content: space-between; align-items: center; }
.tool-btn:hover { background: var(--bg-secondary); }
.tool-btn.active { background: var(--primary); color: white; }
.vip-badge { font-size: 0.7rem; opacity: 0.8; }
.admin-badge { font-size: 0.7rem; opacity: 0.8; }
.tool-header { margin-bottom: 20px; }
.tool-header h2 { margin: 0 0 8px; font-size: 1.4rem; }
.tool-header p { margin: 0; color: var(--text-secondary); font-size: 0.9rem; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.tool-card { background: var(--bg-card); padding: 20px; border-radius: 12px; border: 1px solid var(--border); }
.tool-card h3 { margin: 0 0 16px; font-size: 1.1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 4px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); font-size: 0.9rem; }
.result-box { margin-top: 16px; padding: 16px; background: var(--bg-secondary); border-radius: 8px; }
.result-item { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--border); }
.result-item:last-child { border-bottom: none; }
.result-item .label { color: var(--text-secondary); }
.result-item .value { font-weight: 600; font-family: monospace; }
.result-table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 0.85rem; }
.result-table th, .result-table td { padding: 8px 10px; border: 1px solid var(--border); text-align: center; }
.result-table th { background: var(--bg-secondary); font-weight: 600; }
.error { color: #ef4444; }
.loading { text-align: center; padding: 40px; color: var(--text-secondary); }

/* ========== 游戏中心 ========== */
.game-container { max-width: 600px; margin: 0 auto; }
.tool-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.tool-panel h3 {
  font-size: 1.15rem;
  margin-bottom: 16px;
  color: var(--primary);
}
.tool-panel h4 {
  font-size: 1rem;
  margin: 16px 0 10px;
  color: var(--text);
}
.calc-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
}
.calc-row label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.calc-row input, .calc-row select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  outline: none;
  font-size: 0.9rem;
}
.calc-row input:focus, .calc-row select:focus {
  border-color: var(--primary);
}
.calc-result {
  margin-top: 16px;
  padding: 14px 18px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
  font-size: 0.92rem;
  line-height: 1.8;
}
.calc-result strong { color: var(--primary); }

@media (max-width: 768px) {
  .tool-panel { padding: 16px; }
  .calc-row { flex-direction: column; align-items: flex-start; }
}

/* ========== VIP会员 ========== */
.vip-plans { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.vip-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 280px;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}
.vip-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}
.vip-card ul { list-style: none; padding: 0; }
.vip-card ul li { padding: 6px 0; color: var(--text-secondary); font-size: 0.9rem; }

/* ========== 域名建站资料梳理 ========== */
.site-checklist-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 0;
}

.sc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.sc-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn-danger {
  background: #e53e3e !important;
  border-color: #e53e3e !important;
  color: #fff !important;
}
.btn-danger:hover { background: #c53030 !important; }

.sc-progress-bar-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.sc-progress-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}
.sc-progress-track {
  height: 10px;
  background: var(--bg-secondary);
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 14px;
}
.sc-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #48bb78, #38a169);
  border-radius: 5px;
  transition: width 0.4s ease;
}
.sc-category-progress {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
}
.sc-cat-prog-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
}
.sc-cat-prog-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 3px;
  overflow: hidden;
}
.sc-cat-prog-bar > div {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}
.sc-cat-prog-pct {
  min-width: 32px;
  text-align: right;
  color: var(--text-muted);
  font-weight: 600;
}

.sc-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  overflow-x: auto;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--border);
}
.sc-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  font-family: inherit;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: all 0.2s;
  border-radius: 8px 8px 0 0;
}
.sc-tab:hover {
  background: var(--bg-secondary);
  color: var(--text);
}
.sc-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: var(--bg-secondary);
  font-weight: 600;
}
.sc-tab-icon { font-size: 1.1rem; }
.sc-tab-badge {
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 600;
}
.sc-tab.active .sc-tab-badge {
  background: var(--primary);
  color: #fff;
}

.sc-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  min-height: 400px;
}
.sc-category-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.sc-cat-icon { font-size: 1.5rem; }
.sc-category-header h2 { font-size: 1.2rem; margin: 0; }
.sc-cat-count {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 4px 10px;
  border-radius: 12px;
}

.sc-items-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sc-item {
  display: flex;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  transition: all 0.2s;
}
.sc-item:hover {
  border-color: var(--primary-light);
  box-shadow: 0 2px 8px rgba(43,108,176,0.1);
}
.sc-item.done {
  background: linear-gradient(135deg, rgba(72,187,120,0.06), rgba(56,161,105,0.03));
  border-color: #c6f6d5;
}
[data-theme="dark"] .sc-item.done {
  background: linear-gradient(135deg, rgba(72,187,120,0.12), rgba(56,161,105,0.06));
  border-color: #276749;
}

.sc-item-check {
  flex-shrink: 0;
  padding-top: 2px;
}
.sc-item-check input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: #48bb78;
}

.sc-item-body { flex: 1; min-width: 0; }
.sc-item-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.sc-item-label {
  font-weight: 600;
  font-size: 0.95rem;
}
.sc-item.done .sc-item-label {
  text-decoration: line-through;
  color: var(--text-muted);
}
.sc-item-index {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 1px 6px;
  border-radius: 8px;
}
.sc-item-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.sc-item-inputs {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
}
.sc-value-input, .sc-note-input {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
  transition: border-color 0.2s;
}
.sc-value-input { flex: 1; }
.sc-note-input { flex: 0 0 180px; }
.sc-value-input:focus, .sc-note-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43,108,176,0.1);
}
.sc-item-tips {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
}

.sc-footer-tip {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
  border-left: 3px solid var(--accent);
}

@media (max-width: 768px) {
  .sc-header { flex-direction: column; }
  .sc-item-inputs { flex-direction: column; }
  .sc-note-input { flex: 1; }
  .sc-category-progress { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .vip-card { width: 100%; max-width: 320px; }
}

/* ========== VIP头像高亮 ========== */
.nav-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  position: relative;
  flex-shrink: 0;
}
.vip-avatar {
  background: linear-gradient(135deg, #f59e0b, #d97706, #fbbf24);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.6), 0 0 24px rgba(245, 158, 11, 0.3);
  animation: vipGlow 2s ease-in-out infinite;
}
@keyframes vipGlow {
  0%, 100% { box-shadow: 0 0 12px rgba(245, 158, 11, 0.6), 0 0 24px rgba(245, 158, 11, 0.3); }
  50% { box-shadow: 0 0 18px rgba(245, 158, 11, 0.8), 0 0 36px rgba(245, 158, 11, 0.5); }
}
.vip-crown {
  position: absolute;
  top: -8px;
  right: -6px;
  font-size: 1rem;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.3));
}

/* 定位标记脉冲动画 */
@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
  100% { transform: scale(1); opacity: 1; }
}
.location-marker { background: none; border: none; }

/* ========== 移动端优化 PWA ========== */
:root {
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

/* 安全区域适配 */
.navbar {
  padding-top: var(--safe-top) !important;
}
.footer {
  padding-bottom: var(--safe-bottom) !important;
}
main#app {
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  flex: 1;
  padding: 24px 20px;
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
  .btn, .nav-link, .tool-card, .article-card {
    min-height: 44px;
    min-width: 44px;
  }
  * {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
  }
  a, button {
    touch-action: manipulation;
  }
}

/* 小屏幕适配 */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr !important;
    padding: 24px 20px !important;
  }
  .hero h1 {
    font-size: 2rem !important;
  }
  .hero p {
    font-size: 0.95rem !important;
  }
  .articles-grid, .tools-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .section-title {
    font-size: 1.2rem !important;
  }
  .nav-container {
    padding: 0 12px !important;
  }
  .nav-logo {
    font-size: 1.1rem !important;
  }
  .footer-container {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  /* 支付弹窗适配 */
  .pay-code-item img {
    max-width: 100% !important;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 20px 16px !important;
    border-radius: 12px !important;
  }
  .hero h1 {
    font-size: 1.6rem !important;
  }
  .hero-buttons, .hero > div > div:last-child {
    flex-direction: column !important;
    gap: 8px !important;
  }
  .hero-buttons .btn {
    width: 100% !important;
    text-align: center !important;
  }
  .stat-item {
    font-size: 0.8rem !important;
  }
  .stat-item div:first-child {
    font-size: 1.3rem !important;
  }
}

/* PWA 安装提示 */
.pwa-install-prompt {
  position: fixed;
  bottom: calc(20px + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  padding: 12px 20px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 90%;
  animation: slideUp 0.3s ease;
}
.pwa-install-prompt button {
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  white-space: nowrap;
}
.pwa-install-prompt .close-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  padding: 0 4px;
  opacity: 0.8;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* 分享按钮 */
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  color: white;
  cursor: pointer;
  font-size: 0.85rem;
}

/* 独立应用模式优化 */
@media (display-mode: standalone) {
  .navbar {
    padding-top: calc(var(--safe-top) + 8px) !important;
  }
  main#app {
    padding-top: 12px !important;
  }
}


/* ========== 移动端优化 ========== */
@media (max-width: 768px) {
  /* 后台管理布局 */
  .admin-layout {
    flex-direction: column !important;
  }
  .admin-sidebar {
    width: 100% !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: 8px !important;
    padding: 12px !important;
    position: relative !important;
    height: auto !important;
    overflow-x: auto !important;
  }
  .admin-sidebar a {
    padding: 8px 12px !important;
    font-size: 0.85rem !important;
    white-space: nowrap !important;
    border-radius: 8px !important;
  }
  .admin-content {
    padding: 16px !important;
  }
  .admin-header h1 {
    font-size: 1.3rem !important;
  }
  
  /* 表格响应式 */
  .admin-table-container {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }
  .admin-table {
    min-width: 600px !important;
    font-size: 0.85rem !important;
  }
  .admin-table th, .admin-table td {
    padding: 8px 10px !important;
  }
  
  /* 仪表盘网格 */
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px !important;
  }
  .dashboard-card {
    padding: 16px !important;
  }
  .dashboard-card .value {
    font-size: 1.5rem !important;
  }
  
  /* 表单元素 */
  input, select, textarea {
    font-size: 16px !important; /* 防止iOS自动缩放 */
  }
  
  /* 按钮 */
  .btn {
    padding: 10px 16px !important;
    font-size: 0.9rem !important;
  }
  
  /* 导航栏 */
  .nav-menu {
    display: none !important;
  }
  .nav-menu.open {
    display: flex !important;
    flex-direction: column !important;
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    right: 0 !important;
    background: var(--bg) !important;
    padding: 16px !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
    z-index: 1000 !important;
  }
  .mobile-menu-btn {
    display: block !important;
  }
  
  /* 文章卡片 */
  .article-card {
    padding: 16px !important;
  }
  .article-card h3 {
    font-size: 1.1rem !important;
  }
  
  /* 弹窗 */
  .modal-content {
    width: 95% !important;
    max-height: 90vh !important;
    overflow-y: auto !important;
  }
  
  /* 分类标签 */
  .category-tabs {
    overflow-x: auto !important;
    flex-wrap: nowrap !important;
    -webkit-overflow-scrolling: touch !important;
  }
  .category-tab {
    white-space: nowrap !important;
    flex-shrink: 0 !important;
  }
  
  /* 页脚 */
  footer {
    padding: 24px 16px !important;
    font-size: 0.85rem !important;
  }
  
  /* 首页英雄区 */
  .hero-section {
    padding: 40px 16px !important;
  }
  .hero-section h1 {
    font-size: 1.8rem !important;
  }
  
  /* 工具卡片网格 */
  .tools-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px !important;
  }
  .tool-card {
    padding: 16px !important;
  }
  
  /* 游戏容器 */
  .game-container {
    padding: 16px !important;
  }
  
  /* 搜索框 */
  .search-box {
    width: 100% !important;
  }
  
  /* 用户信息 */
  .user-info {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
  }
}

@media (max-width: 480px) {
  /* 小屏幕进一步优化 */
  .dashboard-grid {
    grid-template-columns: 1fr !important;
  }
  .tools-grid {
    grid-template-columns: 1fr !important;
  }
  .admin-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
  }
  .admin-header h1 {
    font-size: 1.2rem !important;
  }
  h1 { font-size: 1.5rem !important; }
  h2 { font-size: 1.3rem !important; }
  h3 { font-size: 1.1rem !important; }
}

/* iOS Safari 优化 */
@supports (-webkit-touch-callout: none) {
  input, select, textarea {
    font-size: 16px !important;
  }
  .admin-table-container {
    -webkit-overflow-scrolling: touch !important;
  }
}


/* ========== 环游世界移动端优化 ========== */
@media (max-width: 768px) {
  /* 控制面板缩小 */
  .world-control-panel {
    max-width: 200px !important;
    padding: 8px !important;
    font-size: 0.75rem !important;
  }
  .world-control-panel h3 {
    font-size: 0.85rem !important;
    margin-bottom: 6px !important;
  }
  .world-control-panel .btn {
    padding: 4px 8px !important;
    font-size: 0.7rem !important;
    margin: 2px !important;
  }
  .world-control-panel input,
  .world-control-panel select {
    font-size: 0.75rem !important;
    padding: 4px !important;
  }
  
  /* 信息面板缩小 */
  #worldInfo {
    font-size: 0.7rem !important;
    line-height: 1.4 !important;
    max-height: 150px !important;
    overflow-y: auto !important;
  }
  
  /* 图层面板缩小 */
  .world-layer-panel {
    padding: 6px !important;
    font-size: 0.75rem !important;
  }
  .world-layer-panel select {
    font-size: 0.7rem !important;
    padding: 3px !important;
  }
  
  /* 指南针面板缩小 */
  .world-compass-panel {
    padding: 8px !important;
    min-width: 140px !important;
    font-size: 0.7rem !important;
  }
  .compass-title {
    font-size: 0.75rem !important;
    margin-bottom: 4px !important;
  }
  .compass-dial {
    width: 36px !important;
    height: 36px !important;
  }
  .compass-needle {
    width: 3px !important;
    height: 16px !important;
  }
  .compass-info {
    font-size: 0.65rem !important;
    line-height: 1.3 !important;
  }
  
  /* 地图高度调整 */
  #worldMap {
    height: calc(100vh - 120px) !important;
    min-height: 400px !important;
  }
}

@media (max-width: 480px) {
  /* 小屏幕进一步缩小 */
  .world-control-panel {
    max-width: 160px !important;
    padding: 6px !important;
  }
  .world-control-panel .btn {
    padding: 3px 6px !important;
    font-size: 0.65rem !important;
  }
  #worldInfo {
    font-size: 0.65rem !important;
    max-height: 120px !important;
  }
  .world-compass-panel {
    display: none !important; /* 超小屏幕隐藏指南针，可通过按钮显示 */
  }
}

/* 环游世界面板基础样式 */
.world-control-panel {
  transition: all 0.3s ease;
}
.world-compass-panel {
  transition: all 0.3s ease;
}
.compass-dial {
  width: 50px;
  height: 50px;
  border: 2px solid #333;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.compass-needle {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 22px;
  background: linear-gradient(to top, #e53e3e 50%, #333 50%);
  transform-origin: bottom center;
  transform: translate(-50%, -100%) rotate(0deg);
  border-radius: 2px;
}
.compass-n {
  position: absolute;
  top: 2px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.6rem;
  font-weight: bold;
  color: #e53e3e;
}