* {margin: 0;padding: 0;box-sizing: border-box;}
body {font-family: "庞门正道粗书体",PingFangSC,Microsoft Yahei; color: #333;line-height: 1.7;}
a {text-decoration: none;}
.container {width: 90%;max-width: 1200px;margin: 0 auto;}

/* 导航栏 */
.header {width: 100%;height: 70px;line-height:70px;background: #290c44;position: fixed;top:0;z-index:999;}
.logo {color: #d4b86a;font-size: 22px;font-weight: bold;}
.nav {float: right;}
.nav a {color: #fff;margin: 0 15px;font-size:15px;}
.nav a.active{color:#d4b86a;}

/* 横幅 */
.banner {width:100%;height: 100vh;background: linear-gradient(135deg,#290c44,#4b1b79);display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;}
.banner-text h1 {font-size:48px;margin-bottom:15px;color:#d4b86a;}
.banner-text p {font-size:18px;margin-bottom:30px;opacity:0.9;}
.btn {padding:12px 35px;border:1px solid #d4b86a;color:#d4b86a;border-radius:30px;transition:0.3s;}
.btn:hover {background:#d4b86a;color:#290c44;}

/* 通用板块 */
.section {padding: 90px 0;}
.title {text-align:center;margin-bottom:60px;}
.title h2 {font-size:32px;color:#290c44;}
.title span {display:block;color:#888;font-size:14px;letter-spacing:3px;}
.title.white h2,.title.white span {color:#fff;}

/* 紫色背景板块 */
.bg-purple {background:#290c44;}

/* 业务板块 */
.business-list {display:grid;grid-template-columns: 1fr 1fr;gap:30px;}
.business-item {background:#3a155c;padding:30px;border-radius:12px;color:#eee;}
.business-item h4 {color:#d4b86a;margin-bottom:12px;font-size:20px;}

/* 案例板块 */
.case-list {display:grid;grid-template-columns: 1fr 1fr 1fr;gap:25px;}
.case-item {padding:25px;border:1px solid #e4d8f1;border-radius:10px;}

/* 联系板块 */
.contact-box {color:#fff;font-size:17px;line-height:2.2;}

/* 底部 */
.footer {background:#1a072c;color:#b9a7d1;text-align:center;padding:25px 0;font-size:14px;}

/* 自适应手机 */
@media(max-width:768px){
    .business-list,.case-list {grid-template-columns:1fr;}
    .banner-text h1 {font-size:32px;}
    .nav a {margin:0 6px;font-size:13px;}
}