/* 全局重置 - 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}
body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* 头部导航 */
.header {
    background-color: #1a237e;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    color: #fff;
    font-size: 24px;
    font-weight: bold;
}
.nav a {
    color: #fff;
    text-decoration: none;
    margin-left: 25px;
    font-size: 16px;
    transition: color 0.3s;
}
.nav a:hover {
    color: #ffd700;
}

/* 横幅 */
.banner {
    height: 500px;
    background: linear-gradient(135deg, #283593, #3949ab);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}
.banner-content h1 {
    font-size: 42px;
    margin-bottom: 20px;
}
.banner-content p {
    font-size: 18px;
    margin-bottom: 30px;
}
.banner-btn {
    display: inline-block;
    padding: 12px 35px;
    background-color: #ffd700;
    color: #333;
    text-decoration: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: bold;
    transition: transform 0.3s;
}
.banner-btn:hover {
    transform: scale(1.05);
}

/* 通用标题 */
.section-title {
    text-align: center;
    font-size: 32px;
    color: #1a237e;
    margin-bottom: 40px;
    position: relative;
}
.section-title::after {
    content: "";
    width: 80px;
    height: 4px;
    background-color: #ffd700;
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* 核心优势 */
.advantage {
    padding: 60px 0;
    background-color: #fff;
}
.advantage-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.advantage-list .item {
    padding: 30px 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: box-shadow 0.3s;
}
.advantage-list .item:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.advantage-list h3 {
    font-size: 20px;
    color: #1a237e;
    margin-bottom: 10px;
}

/* 职业介绍 */
.career {
    padding: 60px 0;
}
.career-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
.career-card {
    background-color: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    border-left: 4px solid #1a237e;
}
.career-card h3 {
    font-size: 22px;
    color: #1a237e;
    margin-bottom: 12px;
}

/* 副本攻略 */
.instance {
    padding: 60px 0;
    background-color: #fff;
}
.instance-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}
.instance-item {
    padding: 25px;
    background-color: #f8f9fa;
    border-radius: 12px;
    border-bottom: 3px solid #ffd700;
}
.instance-item h3 {
    font-size: 22px;
    color: #3949ab;
    margin-bottom: 10px;
}

/* 游戏功能 */
.function {
    padding: 60px 0;
}
.function-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
.function-card {
    background-color: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}
.function-card:hover {
    transform: translateY(-5px);
}
.function-card h3 {
    font-size: 20px;
    color: #1a237e;
    margin-bottom: 10px;
}

/* 私服推荐 */
.server {
    padding: 60px 0;
    background-color: #fff;
}
.server-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
.server-card {
    padding: 30px;
    background: linear-gradient(135deg, #3949ab, #5c6bc0);
    color: #fff;
    border-radius: 12px;
    text-align: center;
}
.server-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #ffd700;
}

/* 底部 */
.footer {
    background-color: #1a237e;
    color: #fff;
    text-align: center;
    padding: 30px 0;
    margin-top: 40px;
}
.footer p {
    margin-bottom: 10px;
}

/* 响应式适配 */
@media (max-width: 992px) {
    .advantage-list { grid-template-columns: repeat(2,1fr); }
    .career-grid { grid-template-columns: repeat(2,1fr); }
    .function-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
    .nav a { margin-left: 15px; font-size: 14px; }
    .banner-content h1 { font-size: 32px; }
    .instance-list { grid-template-columns: 1fr; }
    .server-list { grid-template-columns: 1fr; }
}