/* 
 * 中国电动汽车网 - 统一样式表
 * 风格：未来感、科技、纯净
 * 配色：#00a8ff (电感蓝), #2f3640 (深空蓝), #f5f6fa (背景色)
 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Inter", "Segoe UI", "PingFang SC", sans-serif; font-size: 15px; color: #2f3640; line-height: 1.6; background: #f5f6fa; }
a { text-decoration: none; color: #2f3640; transition: 0.3s; }
a:hover { color: #00a8ff; }
ul { list-style: none; }

.container { width: 1240px; margin: 0 auto; }

/* 头部 */
.header { background: rgba(47, 54, 64, 0.95); color: #fff; padding: 15px 0; position: sticky; top: 0; z-index: 1000; backdrop-filter: blur(10px); }
.header .container { display: flex; justify-content: space-between; align-items: center; }
.logo h1 { font-size: 26px; font-weight: 800; letter-spacing: 1px; color: #00a8ff; }
.logo h1 span { color: #fff; }

/* 导航 */
.nav { display: flex; }
.nav li a { display: block; padding: 10px 20px; color: #dcdde1; font-weight: 500; font-size: 16px; }
.nav li a:hover, .nav li.active a { color: #00a8ff; }

/* 首页大图区域 */
.ev-hero { margin: 30px 0; height: 500px; border-radius: 20px; overflow: hidden; position: relative; box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.ev-hero img { width: 100%; height: 100%; object-fit: cover; }
.ev-hero-content { position: absolute; bottom: 0; left: 0; width: 50%; padding: 60px; background: linear-gradient(to right, rgba(0,0,0,0.8), transparent); color: #fff; }
.ev-hero-content h2 { font-size: 36px; margin-bottom: 20px; line-height: 1.2; }

/* 数据展示/资讯网格 */
.ev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-bottom: 60px; }
.ev-card { background: #fff; border-radius: 20px; overflow: hidden; transition: 0.4s; border: 1px solid #eee; }
.ev-card:hover { transform: translateY(-10px); box-shadow: 0 30px 60px rgba(0,0,0,0.08); }
.ev-img { height: 240px; overflow: hidden; }
.ev-img img { width: 100%; height: 100%; object-fit: cover; }
.ev-info { padding: 25px; }
.ev-info h3 { font-size: 18px; font-weight: 700; margin-bottom: 15px; }
.ev-info p { color: #7f8c8d; font-size: 14px; margin-bottom: 20px; }
.ev-meta { display: flex; justify-content: space-between; font-size: 12px; color: #00a8ff; font-weight: 600; text-transform: uppercase; }

/* 内容页 */
.ev-article { max-width: 900px; margin: 60px auto; background: #fff; padding: 60px; border-radius: 30px; }
.article-header { margin-bottom: 50px; text-align: center; }
.article-header h1 { font-size: 36px; margin-bottom: 25px; color: #2f3640; }
.article-body { font-size: 18px; color: #353b48; line-height: 1.8; }
.article-body p { margin-bottom: 25px; }

/* 页脚 */
.footer { background: #2f3640; color: #dcdde1; padding: 80px 0 40px; margin-top: 100px; }
.footer-logo { font-size: 24px; color: #00a8ff; font-weight: 800; margin-bottom: 30px; }
.footer-links { margin-bottom: 50px; opacity: 0.7; }
.footer-links a { color: #fff; margin: 0 15px; }
.footer-bottom { border-top: 1px solid #3f4a5a; padding-top: 30px; text-align: center; font-size: 13px; opacity: 0.5; }