/* 
 * 中国电商报 - 统一样式表
 * 风格：专业、权威、资讯流优先、现代财经感
 * 配色：#003399 (财经蓝), #e60012 (新闻红), #333333 (深灰), #f8f9fa (浅灰背景)
 */

/* 全局基础 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; font-size: 15px; color: #333; line-height: 1.6; background: #f8f9fa; }
a { text-decoration: none; color: #333; transition: 0.2s; }
a:hover { color: #003399; }
ul { list-style: none; }
img { max-width: 100% !important; height: auto !important; display: block; }

.container { width: 1200px; margin: 0 auto; }
.clearfix::after { content: ""; display: block; clear: both; }

/* 头部 */
.top-bar { background: #003399; color: #fff; padding: 8px 0; font-size: 13px; }
.header { background: #fff; padding: 30px 0; border-bottom: 1px solid #eee; }
.header-flex { display: flex; justify-content: space-between; align-items: center; }
.logo h1 { font-size: 36px; color: #003399; font-weight: 800; border-left: 10px solid #e60012; padding-left: 20px; line-height: 1; }
.logo p { font-size: 12px; color: #999; margin-top: 5px; text-transform: uppercase; letter-spacing: 2px; }

/* 导航 */
.nav-wrap { background: #fff; border-bottom: 3px solid #003399; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.nav { display: flex; height: 50px; align-items: center; }
.nav li a { display: block; padding: 0 25px; line-height: 50px; font-size: 16px; font-weight: bold; }
.nav li a:hover, .nav li.active a { color: #003399; background: #f0f4ff; }

/* 首页大图资讯 */
.hero-news { display: grid; grid-template-columns: 780px 400px; gap: 20px; margin: 25px 0; }
.hero-main { height: 400px; position: relative; overflow: hidden; }
.hero-main img { width: 100%; height: 100%; object-fit: cover; }
.hero-caption { position: absolute; bottom: 0; left: 0; right: 0; padding: 30px; background: linear-gradient(transparent, rgba(0,0,0,0.85)); color: #fff; }
.hero-caption h2 { font-size: 26px; margin-bottom: 10px; }

.hero-list { background: #fff; padding: 20px; border: 1px solid #eee; }
.hero-list h3 { border-bottom: 2px solid #e60012; padding-bottom: 10px; margin-bottom: 15px; font-size: 18px; color: #e60012; }
.hero-list li { padding: 10px 0; border-bottom: 1px dashed #eee; font-size: 14px; }
.hero-list li:last-child { border-bottom: none; }

/* 资讯流网格 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; margin-bottom: 40px; }
.news-card { background: #fff; border: 1px solid #eee; transition: 0.3s; }
.news-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
.news-img { height: 180px; overflow: hidden; }
.news-img img { width: 100%; height: 100%; object-fit: cover; }
.news-info { padding: 20px; }
.news-info .cat { color: #003399; font-size: 12px; font-weight: bold; margin-bottom: 10px; display: block; }
.news-info h4 { font-size: 17px; height: 48px; overflow: hidden; margin-bottom: 15px; line-height: 1.4; }
.news-meta { font-size: 12px; color: #999; display: flex; justify-content: space-between; }

/* 内容页样式 */
.article-container { display: grid; grid-template-columns: 850px 320px; gap: 30px; margin: 30px 0; }
.article-wrap { background: #fff; padding: 45px; border: 1px solid #eee; }
.article-header { border-bottom: 1px solid #eee; padding-bottom: 30px; margin-bottom: 35px; }
.article-header h1 { font-size: 32px; color: #1a1a1a; margin-bottom: 20px; line-height: 1.3; }
.article-meta { font-size: 13px; color: #999; }
.article-body { font-size: 17px; color: #333; line-height: 1.8; }
.article-body p { margin-bottom: 25px; }
.article-body img { margin: 30px auto; border: 1px solid #eee; padding: 5px; }

/* 侧边栏排行 */
.sidebar-box { background: #fff; border: 1px solid #eee; padding: 20px; margin-bottom: 30px; }
.sidebar-title { font-size: 18px; font-weight: bold; color: #003399; margin-bottom: 20px; border-left: 5px solid #003399; padding-left: 15px; }
.rank-list li { padding: 12px 0; border-bottom: 1px solid #f5f5f5; display: flex; gap: 10px; align-items: flex-start; }
.rank-num { width: 22px; height: 22px; background: #f0f0f0; color: #666; text-align: center; line-height: 22px; font-size: 12px; font-weight: bold; flex-shrink: 0; }
.rank-list li:nth-child(-n+3) .rank-num { background: #e60012; color: #fff; }

/* 分页 */
.pagination { margin: 40px 0; text-align: center; }
.pagination li { display: inline-block; margin: 0 5px; }
.pagination li a { display: block; padding: 8px 15px; background: #fff; border: 1px solid #ddd; }
.pagination li.thisclass a { background: #003399; color: #fff; border-color: #003399; }

/* 页脚 */
.footer { background: #1a1a1a; color: #aaa; padding: 60px 0 30px; margin-top: 60px; }
.footer-flex { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px; }
.footer h4 { color: #fff; margin-bottom: 25px; font-size: 17px; }
.footer-links a { color: #999; display: block; margin-bottom: 12px; font-size: 14px; }
.footer-bottom { text-align: center; margin-top: 50px; padding-top: 30px; border-top: 1px solid #333; font-size: 13px; }