/**
 * AI城市分站B2B平台 - 主样式表
 * 配色方案：深蓝色(#1a237e) + 科技蓝(#2962ff) + 橙红(#ff5722)强调色
 */

/* ========== 基础重置 ========== */
*, *::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; font-size: 14px; line-height: 1.6; color: #333; background: #f5f7fa; }
a { color: #2962ff; text-decoration: none; transition: all 0.3s; }
a:hover { color: #1a237e; }
img { max-width: 100%; height: auto; }
button { cursor: pointer; font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }

/* ========== 顶部栏 ========== */
.top-bar { background: #1a237e; color: #fff; padding: 6px 0; font-size: 12px; }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-left .welcome-text { margin-right: 20px; }
.top-left .hotline { opacity: 0.9; }
.top-right a { color: #fff; margin-left: 18px; opacity: 0.9; }
.top-right a:hover { opacity: 1; }
.top-right .register-link { background: #ff5722; padding: 2px 12px; border-radius: 3px; }

/* ========== 主导航 ========== */
.main-nav { background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.08); position: relative; z-index: 100; }
.main-nav .container { display: flex; align-items: center; height: 70px; }
.logo-area { margin-right: 40px; }
.logo { display: block; text-decoration: none; }
.logo-text { font-size: 24px; font-weight: 800; color: #1a237e; letter-spacing: -1px; }
.logo-sub { font-size: 12px; color: #ff5722; font-weight: 600; display: block; margin-top: -3px; }
.nav-menu { display: flex; flex: 1; gap: 5px; }
.nav-item { padding: 8px 16px; color: #444; font-size: 15px; font-weight: 500; border-radius: 4px; }
.nav-item:hover, .nav-item.active { color: #2962ff; background: #eef2ff; }
.nav-item.nav-highlight { background: linear-gradient(135deg, #ff5722, #ff7043); color: #fff; margin-left: 10px; }
.nav-item.nav-highlight:hover { background: linear-gradient(135deg, #f4511e, #ff5722); color: #fff; }

/* 城市选择器 */
.city-selector { position: relative; margin-left: 20px; }
.current-city { color: #2962ff; font-weight: 500; cursor: pointer; padding: 6px 12px; border: 1px solid #e0e0e0; border-radius: 4px; }
.current-city:hover { border-color: #2962ff; }
.city-dropdown { display: none; position: absolute; top: 100%; right: 0; width: 380px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,0.12); padding: 15px; margin-top: 5px; z-index: 200; }
.city-selector:hover .city-dropdown { display: block; }
.city-hot strong { color: #333; font-size: 13px; }
.city-hot a { display: inline-block; padding: 3px 10px; margin: 3px; background: #f5f7fa; border-radius: 3px; font-size: 13px; color: #555; }
.city-hot a:hover { background: #2962ff; color: #fff; }
.city-all { margin-top: 10px; padding-top: 10px; border-top: 1px solid #eee; text-align: right; }
.view-all { color: #2962ff; font-size: 13px; }

/* ========== 搜索栏 ========== */
.search-bar { background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #3949ab 100%); padding: 25px 0; }
.search-form { display: flex; max-width: 900px; margin: 0 auto; gap: 0; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
.search-type { min-width: 120px; }
.type-select { width: 100%; height: 48px; border: none; border-right: 1px solid #e0e0e0; padding: 0 12px; font-size: 14px; color: #555; background: #fafafa; cursor: pointer; outline: none; }
.search-input { flex: 1; height: 48px; border: none; padding: 0 18px; font-size: 14px; outline: none; }
.search-btn { min-width: 100px; height: 48px; background: linear-gradient(135deg, #ff5722, #ff7043); color: #fff; border: none; font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.3s; }
.search-btn:hover { background: linear-gradient(135deg, #f4511e, #ff5722); }
.publish-btn { display: flex; align-items: center; min-width: 130px; height: 48px; background: #4caf50; color: #fff; padding: 0 20px; font-size: 14px; font-weight: 600; white-space: nowrap; }
.publish-btn:hover { background: #43a047; color: #fff; }
.publish-btn i { margin-right: 5px; }

/* ========== 页面主体 ========== */
.main-content { min-height: 500px; padding: 20px 0; }

/* ========== 首页布局 ========== */
.home-layout { display: grid; grid-template-columns: 220px 1fr 280px; gap: 20px; }

/* 左侧分类菜单 */
.category-menu { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow: hidden; }
.category-menu h3 { background: linear-gradient(135deg, #1a237e, #283593); color: #fff; padding: 14px 18px; font-size: 15px; }
.category-menu h3 i { margin-right: 8px; }
.cat-list { list-style: none; }
.cat-item { border-bottom: 1px solid #f0f0f0; }
.cat-item:last-child { border-bottom: none; }
.cat-link { display: flex; align-items: center; padding: 11px 18px; color: #444; font-size: 14px; transition: all 0.2s; }
.cat-link i { width: 24px; color: #2962ff; margin-right: 8px; font-size: 15px; }
.cat-link:hover { background: #eef2ff; color: #2962ff; padding-left: 22px; }

/* 中间内容区 */
.center-content { display: flex; flex-direction: column; gap: 20px; }

/* Banner区域 */
.hero-banner { background: linear-gradient(135deg, #1a237e 0%, #3949ab 50%, #2962ff 100%); border-radius: 12px; padding: 40px; color: #fff; position: relative; overflow: hidden; }
.hero-banner::before { content: ''; position: absolute; top: -50%; right: -20%; width: 400px; height: 400px; background: rgba(255,255,255,0.05); border-radius: 50%; }
.hero-banner::after { content: ''; position: absolute; bottom: -30%; right: 10%; width: 250px; height: 250px; background: rgba(255,255,255,0.03); border-radius: 50%; }
.hero-title { font-size: 28px; font-weight: 700; margin-bottom: 10px; position: relative; z-index: 2; }
.hero-desc { font-size: 15px; opacity: 0.9; margin-bottom: 25px; position: relative; z-index: 2; }
.hero-stats { display: flex; gap: 40px; position: relative; z-index: 2; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 28px; font-weight: 700; }
.hero-stat .label { font-size: 13px; opacity: 0.85; }
.hero-btn { display: inline-block; background: #ff5722; color: #fff; padding: 12px 30px; border-radius: 6px; font-weight: 600; margin-top: 20px; position: relative; z-index: 2; }
.hero-btn:hover { background: #f4511e; color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,87,34,0.3); }

/* 内容卡片 */
.content-card { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow: hidden; }
.card-header { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; border-bottom: 2px solid #f0f0f0; }
.card-title { font-size: 17px; font-weight: 700; color: #1a237e; display: flex; align-items: center; gap: 8px; }
.card-title .icon { width: 32px; height: 32px; background: linear-gradient(135deg, #2962ff, #448aff); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 15px; }
.card-more { font-size: 13px; color: #999; }
.card-more:hover { color: #2962ff; }
.card-body { padding: 15px 20px; }

/* 供求列表 */
.supply-list { list-style: none; }
.supply-item { display: flex; align-items: flex-start; padding: 14px 0; border-bottom: 1px solid #f5f5f5; gap: 15px; }
.supply-item:last-child { border-bottom: none; }
.supply-tag { display: inline-block; padding: 2px 10px; border-radius: 3px; font-size: 12px; font-weight: 600; min-width: 40px; text-align: center; }
.tag-supply { background: #e8f5e9; color: #2e7d32; }
.tag-demand { background: #fff3e0; color: #ef6c00; }
.tag-urgent { background: #ffebee; color: #c62828; font-size: 11px; margin-left: 6px; }
.tag-recommend { background: linear-gradient(135deg, #ff5722, #ff7043); color: #fff; font-size: 11px; margin-left: 6px; }
.supply-info { flex: 1; }
.supply-title { font-size: 15px; color: #333; font-weight: 500; display: block; margin-bottom: 4px; }
.supply-title:hover { color: #2962ff; }
.supply-meta { font-size: 12px; color: #999; }
.supply-meta span { margin-right: 12px; }
.supply-meta i { margin-right: 3px; }
.supply-price { color: #ff5722; font-weight: 700; font-size: 15px; white-space: nowrap; }

/* 企业列表 */
.company-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.company-item { display: flex; align-items: center; gap: 12px; padding: 12px; border: 1px solid #eee; border-radius: 8px; transition: all 0.3s; }
.company-item:hover { border-color: #2962ff; box-shadow: 0 4px 12px rgba(41,98,255,0.1); transform: translateY(-2px); }
.company-logo { width: 50px; height: 50px; border-radius: 8px; object-fit: cover; background: #f5f7fa; display: flex; align-items: center; justify-content: center; color: #999; font-size: 12px; flex-shrink: 0; }
.company-logo img { width: 100%; height: 100%; object-fit: cover; border-radius: 8px; }
.company-info h4 { font-size: 14px; color: #333; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.company-info p { font-size: 12px; color: #999; margin-top: 2px; }
.vip-badge { display: inline-block; background: linear-gradient(135deg, #ffd700, #ffb300); color: #333; font-size: 11px; padding: 1px 8px; border-radius: 3px; font-weight: 600; margin-left: 5px; }

/* 右侧栏 */
.sidebar { display: flex; flex-direction: column; gap: 20px; }
.sidebar-card { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow: hidden; }
.sidebar-card .card-header { padding: 12px 18px; font-size: 15px; }
.sidebar-card .card-body { padding: 12px 18px; }

/* VIP企业推荐 */
.vip-company { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid #f5f5f5; }
.vip-company:last-child { border-bottom: none; }
.vip-company .rank { width: 24px; height: 24px; background: #f5f7fa; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: #666; flex-shrink: 0; }
.vip-company .rank.top { background: linear-gradient(135deg, #ffd700, #ffb300); color: #333; }

/* 快捷入口 */
.quick-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.quick-link { display: flex; flex-direction: column; align-items: center; padding: 15px 10px; background: #f8f9ff; border-radius: 8px; color: #444; font-size: 13px; transition: all 0.3s; }
.quick-link i { font-size: 22px; color: #2962ff; margin-bottom: 6px; }
.quick-link:hover { background: #2962ff; color: #fff; transform: translateY(-2px); }
.quick-link:hover i { color: #fff; }

/* AI服务入口 */
.ai-service { background: linear-gradient(135deg, #1a237e, #3949ab); color: #fff; border-radius: 8px; padding: 20px; text-align: center; }
.ai-service h4 { font-size: 16px; margin-bottom: 8px; }
.ai-service p { font-size: 13px; opacity: 0.85; margin-bottom: 15px; }
.ai-service .ai-btn { display: inline-block; background: #ff5722; color: #fff; padding: 10px 24px; border-radius: 6px; font-weight: 600; font-size: 14px; }
.ai-service .ai-btn:hover { background: #f4511e; color: #fff; }

/* ========== 列表页 ========== */
.list-layout { display: grid; grid-template-columns: 220px 1fr; gap: 20px; }
.filter-sidebar { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); padding: 20px; }
.filter-group { margin-bottom: 20px; }
.filter-group h4 { font-size: 14px; font-weight: 700; color: #1a237e; margin-bottom: 10px; padding-bottom: 8px; border-bottom: 1px solid #eee; }
.filter-options { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-options a { padding: 4px 12px; background: #f5f7fa; border-radius: 4px; font-size: 13px; color: #555; }
.filter-options a:hover, .filter-options a.active { background: #2962ff; color: #fff; }

/* ========== 详情页 ========== */
.detail-layout { max-width: 900px; margin: 0 auto; }
.detail-header { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); padding: 30px; margin-bottom: 20px; }
.detail-title { font-size: 22px; font-weight: 700; color: #1a237e; margin-bottom: 15px; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 15px; color: #999; font-size: 13px; }
.detail-meta span { display: flex; align-items: center; gap: 4px; }
.detail-body { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); padding: 30px; line-height: 1.8; }
.detail-body p { margin-bottom: 12px; }
.detail-body h2 { font-size: 18px; color: #1a237e; margin: 20px 0 10px; padding-bottom: 8px; border-bottom: 2px solid #eef2ff; }
.detail-body img { max-width: 100%; border-radius: 6px; margin: 10px 0; }

/* 联系卡片 */
.contact-card { background: linear-gradient(135deg, #f8f9ff, #eef2ff); border-radius: 8px; padding: 25px; margin-top: 20px; }
.contact-card h4 { font-size: 16px; color: #1a237e; margin-bottom: 15px; }
.contact-item { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 14px; }
.contact-item i { width: 30px; height: 30px; background: #2962ff; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 13px; }
.contact-btn { display: inline-block; background: linear-gradient(135deg, #ff5722, #ff7043); color: #fff; padding: 12px 30px; border-radius: 6px; font-weight: 600; margin-top: 10px; border: none; font-size: 14px; }
.contact-btn:hover { background: linear-gradient(135deg, #f4511e, #ff5722); color: #fff; }

/* ========== 企业黄页 ========== */
.company-header { background: linear-gradient(135deg, #1a237e, #3949ab); color: #fff; padding: 40px; border-radius: 12px; margin-bottom: 20px; }
.company-header-content { display: flex; gap: 25px; align-items: center; }
.company-big-logo { width: 100px; height: 100px; background: #fff; border-radius: 12px; padding: 5px; flex-shrink: 0; }
.company-big-logo img { width: 100%; height: 100%; object-fit: contain; border-radius: 8px; }
.company-header-info h1 { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.company-header-info p { opacity: 0.85; font-size: 14px; margin-bottom: 5px; }
.company-tabs { display: flex; gap: 5px; background: #fff; padding: 5px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.company-tab { padding: 10px 25px; border-radius: 6px; color: #555; font-weight: 500; cursor: pointer; border: none; background: none; }
.company-tab.active { background: linear-gradient(135deg, #2962ff, #448aff); color: #fff; }
.company-tab:hover:not(.active) { background: #f5f7fa; }

/* ========== 会员中心 ========== */
.member-layout { display: grid; grid-template-columns: 220px 1fr; gap: 20px; }
.member-sidebar { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); overflow: hidden; }
.member-profile { padding: 25px 15px; text-align: center; background: linear-gradient(135deg, #1a237e, #3949ab); color: #fff; }
.member-avatar { width: 70px; height: 70px; border-radius: 50%; background: #fff; margin: 0 auto 12px; overflow: hidden; }
.member-avatar img { width: 100%; height: 100%; object-fit: cover; }
.member-name { font-size: 16px; font-weight: 600; }
.member-level-text { font-size: 12px; opacity: 0.85; margin-top: 4px; }
.member-menu { list-style: none; padding: 10px 0; }
.member-menu li a { display: flex; align-items: center; gap: 10px; padding: 12px 20px; color: #555; font-size: 14px; }
.member-menu li a:hover, .member-menu li a.active { background: #eef2ff; color: #2962ff; }
.member-menu li a i { width: 20px; text-align: center; }
.member-content { background: #fff; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); padding: 30px; min-height: 500px; }

/* 表单样式 */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; font-weight: 500; color: #333; margin-bottom: 8px; }
.form-label .required { color: #ff5722; margin-left: 2px; }
.form-input, .form-select, .form-textarea { width: 100%; padding: 10px 15px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; transition: all 0.3s; font-family: inherit; }
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: #2962ff; box-shadow: 0 0 0 3px rgba(41,98,255,0.1); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-hint { font-size: 12px; color: #999; margin-top: 5px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.btn { display: inline-block; padding: 10px 28px; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; transition: all 0.3s; }
.btn-primary { background: linear-gradient(135deg, #2962ff, #448aff); color: #fff; }
.btn-primary:hover { background: linear-gradient(135deg, #1a237e, #2962ff); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(41,98,255,0.25); }
.btn-success { background: linear-gradient(135deg, #4caf50, #66bb6a); color: #fff; }
.btn-success:hover { background: linear-gradient(135deg, #43a047, #4caf50); color: #fff; }
.btn-warning { background: linear-gradient(135deg, #ff9800, #ffb74d); color: #fff; }
.btn-danger { background: linear-gradient(135deg, #f44336, #ef5350); color: #fff; }
.btn-sm { padding: 6px 16px; font-size: 13px; }
.btn-lg { padding: 14px 40px; font-size: 16px; }

/* 表格 */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #eee; }
.data-table th { background: #f8f9ff; font-weight: 600; color: #1a237e; font-size: 13px; }
.data-table tbody tr:hover { background: #fafbff; }
.data-table .actions { display: flex; gap: 5px; }
.data-table .actions a { padding: 4px 10px; border-radius: 4px; font-size: 12px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 12px; font-weight: 500; }
.badge-success { background: #e8f5e9; color: #2e7d32; }
.badge-warning { background: #fff3e0; color: #ef6c00; }
.badge-danger { background: #ffebee; color: #c62828; }
.badge-info { background: #e3f2fd; color: #1565c0; }
.badge-secondary { background: #f5f5f5; color: #666; }

/* 分页 */
.pagination-wrapper { display: flex; justify-content: center; margin-top: 30px; }
.pagination { display: flex; list-style: none; gap: 5px; }
.pagination li a, .pagination li span { display: block; padding: 8px 14px; background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; color: #555; font-size: 14px; }
.pagination li.active span { background: linear-gradient(135deg, #2962ff, #448aff); color: #fff; border-color: #2962ff; }
.pagination li a:hover { background: #eef2ff; color: #2962ff; border-color: #2962ff; }
.pagination li.disabled span { color: #ccc; cursor: not-allowed; }

/* 页脚 */
.site-footer { margin-top: 40px; }
.footer-main { background: #1a237e; color: #fff; padding: 50px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; }
.footer-col h3 { font-size: 16px; font-weight: 600; margin-bottom: 20px; color: #fff; }
.footer-col h3 i { margin-right: 8px; color: #ff5722; }
.footer-col p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.7); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.7); font-size: 13px; }
.footer-col ul li a:hover { color: #fff; }
.contact-info { margin-top: 15px; }
.contact-info span { display: block; margin-bottom: 6px; font-size: 13px; }
.city-links { display: flex; flex-wrap: wrap; gap: 8px; }
.city-links a { padding: 4px 12px; background: rgba(255,255,255,0.1); border-radius: 4px; font-size: 13px; color: rgba(255,255,255,0.8); }
.city-links a:hover { background: rgba(255,255,255,0.2); color: #fff; }
.footer-bottom { background: #0d1642; color: rgba(255,255,255,0.5); padding: 20px 0; text-align: center; font-size: 13px; }

/* 返回顶部 */
.back-to-top { position: fixed; bottom: 40px; right: 40px; width: 44px; height: 44px; background: linear-gradient(135deg, #2962ff, #448aff); color: #fff; border: none; border-radius: 50%; font-size: 16px; cursor: pointer; box-shadow: 0 4px 12px rgba(41,98,255,0.3); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 999; }
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(41,98,255,0.4); }

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .home-layout { grid-template-columns: 1fr; }
    .category-menu { display: none; }
    .sidebar { display: none; }
    .list-layout { grid-template-columns: 1fr; }
    .filter-sidebar { display: none; }
    .member-layout { grid-template-columns: 1fr; }
    .member-sidebar { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .company-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .main-nav .container { height: auto; flex-wrap: wrap; padding: 10px 15px; }
    .nav-menu { flex-wrap: wrap; gap: 3px; }
    .nav-item { padding: 6px 10px; font-size: 13px; }
    .search-form { flex-wrap: wrap; }
    .search-type { width: 100%; }
    .company-list { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .form-row { grid-template-columns: 1fr; }
    .top-left .welcome-text { display: none; }
}

/* ========== 登录注册页 ========== */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #3949ab 100%); }
.auth-box { background: #fff; border-radius: 12px; box-shadow: 0 20px 60px rgba(0,0,0,0.2); width: 100%; max-width: 480px; padding: 40px; }
.auth-logo { text-align: center; margin-bottom: 30px; }
.auth-logo .logo-text { font-size: 28px; font-weight: 800; color: #1a237e; }
.auth-logo .logo-sub { color: #ff5722; font-size: 14px; }
.auth-title { font-size: 22px; font-weight: 700; color: #1a237e; margin-bottom: 5px; }
.auth-subtitle { color: #999; font-size: 14px; margin-bottom: 25px; }
.auth-form .form-group { margin-bottom: 18px; }
.auth-form .btn { width: 100%; padding: 14px; font-size: 16px; }
.auth-links { display: flex; justify-content: space-between; margin-top: 20px; font-size: 13px; }
.auth-links a { color: #2962ff; }

/* 提示框 */
.alert { padding: 12px 18px; border-radius: 6px; margin-bottom: 20px; font-size: 14px; }
.alert-success { background: #e8f5e9; color: #2e7d32; border: 1px solid #c8e6c9; }
.alert-error { background: #ffebee; color: #c62828; border: 1px solid #ffcdd2; }
.alert-warning { background: #fff3e0; color: #ef6c00; border: 1px solid #ffe0b2; }
.alert-info { background: #e3f2fd; color: #1565c0; border: 1px solid #bbdefb; }

/* 统计卡片 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }
.stat-card { background: #fff; border-radius: 10px; padding: 25px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); display: flex; align-items: center; gap: 15px; transition: all 0.3s; }
.stat-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
.stat-icon { width: 55px; height: 55px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 24px; flex-shrink: 0; }
.stat-icon.blue { background: linear-gradient(135deg, #2962ff, #448aff); color: #fff; }
.stat-icon.green { background: linear-gradient(135deg, #4caf50, #66bb6a); color: #fff; }
.stat-icon.orange { background: linear-gradient(135deg, #ff9800, #ffb74d); color: #fff; }
.stat-icon.red { background: linear-gradient(135deg, #ff5722, #ff7043); color: #fff; }
.stat-info h4 { font-size: 24px; font-weight: 700; color: #1a237e; }
.stat-info p { font-size: 13px; color: #999; }

/* 消息中心 */
.msg-item { padding: 15px; border-bottom: 1px solid #f5f5f5; display: flex; gap: 12px; }
.msg-item:last-child { border-bottom: none; }
.msg-icon { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.msg-icon.unread { background: #e3f2fd; color: #2962ff; }
.msg-icon.read { background: #f5f5f5; color: #999; }
.msg-content h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.msg-content p { font-size: 13px; color: #666; }
.msg-time { font-size: 12px; color: #999; margin-left: auto; }