/* 中信楷岚教育官网 - 全局样式（简洁、轻量、自适应） */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#333;line-height:1.7;background:#fff}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}
/* 顶部条 */
.topbar{background:#8b0000;color:#fff;font-size:13px;padding:6px 0}
.topbar .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px}
/* 头部 */
header{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.08);position:sticky;top:0;z-index:99}
.hd{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:12px 0}
.logo{font-size:22px;font-weight:700;color:#8b0000;line-height:1.3}
.logo small{display:block;font-size:12px;color:#888;font-weight:400;letter-spacing:1px}
nav ul{display:flex;list-style:none;flex-wrap:wrap}
nav a{display:block;padding:10px 14px;font-size:15px;color:#333}
nav a:hover,nav a.on{color:#8b0000;border-bottom:2px solid #8b0000}
/* 横幅 */
.hero{position:relative}
.hero img{width:100%;max-height:480px;object-fit:cover}
.hero .txt{position:absolute;left:0;right:0;bottom:0;top:0;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(90deg,rgba(0,0,0,.55),transparent)}
.hero .txt div{max-width:1200px;margin:0 auto;padding:0 16px;width:100%;color:#fff}
.hero h1{font-size:34px;margin-bottom:12px}
.hero p{font-size:16px;max-width:560px}
/* 板块 */
.sec{padding:48px 0}
.sec.gray{background:#f6f7f9}
h2.tt{font-size:26px;color:#222;text-align:center;margin-bottom:8px}
.sub{text-align:center;color:#888;margin-bottom:32px;font-size:14px}
h2.tt:after{content:"";display:block;width:48px;height:3px;background:#8b0000;margin:10px auto 0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:#fff;border:1px solid #eee;border-radius:8px;overflow:hidden;transition:box-shadow .2s}
.card:hover{box-shadow:0 6px 20px rgba(0,0,0,.1)}
.card img{aspect-ratio:3/2;object-fit:cover;width:100%;background:#e9e9e9}
.card .bd{padding:18px}
.card h3{font-size:18px;margin-bottom:8px;color:#8b0000}
.card p{font-size:14px;color:#666}
/* 简介左右布局 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.split h3{font-size:22px;color:#8b0000;margin-bottom:14px}
.split p{color:#555;margin-bottom:10px;font-size:15px}
.split img{border-radius:8px}
/* 列表 */
.list{list-style:none}
.list li{border-bottom:1px dashed #ddd;padding:14px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.list li a:hover{color:#8b0000}
.list .d{color:#999;font-size:13px;white-space:nowrap}
/* 页面头图 */
.pagehead{background:#8b0000;color:#fff;padding:48px 0 40px;text-align:center}
.pagehead h1{font-size:28px}
.pagehead p{font-size:13px;opacity:.85;margin-top:6px}
/* 联系 */
.info{background:#f6f7f9;border-left:4px solid #8b0000;padding:20px;margin-bottom:14px}
.info b{color:#8b0000}
/* 页脚 */
footer{background:#2b2b2b;color:#aaa;font-size:13px;padding:36px 0 20px;margin-top:0}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
footer h4{color:#fff;font-size:15px;margin-bottom:10px}
footer a{color:#aaa;display:block;padding:3px 0}
footer a:hover{color:#fff}
.copy{text-align:center;border-top:1px solid #444;margin-top:24px;padding-top:16px;color:#777}
.btn{display:inline-block;background:#8b0000;color:#fff;padding:10px 26px;border-radius:4px;font-size:15px;margin-top:14px}
.btn:hover{background:#a51010}
/* 自适应 */
@media(max-width:900px){.grid,.grid2{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr}footer .cols{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid,.grid2,footer .cols{grid-template-columns:1fr}.hero h1{font-size:22px}nav a{padding:8px 10px;font-size:14px}.hero .txt p{display:none}}