/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", Arial, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 15px 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #07c160;
}

.nav a {
    color: #333;
    text-decoration: none;
    margin-left: 30px;
    font-size: 16px;
    transition: color 0.3s;
}

.nav a:hover, .nav a.active {
    color: #07c160;
}

/* 横幅 */
.banner {
    background: linear-gradient(135deg, #07c160, #00b4ff);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.banner p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    background: #fff;
    color: #07c160;
    padding: 15px 40px;
    border-radius: 8px;
    font-size: 18px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s;
}

.btn:hover {
    transform: scale(1.05);
}

/* 功能特性 */
.features {
    padding: 80px 0;
}

.title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    color: #333;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.item {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.item:hover {
    transform: translateY(-5px);
}

.item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #07c160;
}

.item p {
    color: #666;
    font-size: 16px;
}

/* 页面标题 */
.page-title {
    padding: 40px 0;
    text-align: center;
}

.page-title h1 {
    font-size: 36px;
    color: #333;
}

/* 工具列表 */
.tools-list {
    padding: 20px 0 80px;
}

.tools-list .grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
}

.tool-item {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s;
    cursor: pointer;
}

.tool-item:hover {
    background: #07c160;
    color: #fff;
    transform: scale(1.05);
}

/* 关于内容 */
.about-content {
    padding: 20px 0 80px;
}

.about-content .card {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

.about-content .card h2 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #07c160;
}

.about-content .card p, .about-content .card ul {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

.about-content .card ul {
    list-style-position: inside;
}

/* 底部 */
.footer {
    background: #333;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.footer p {
    opacity: 0.8;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav a {
        margin: 0 15px;
    }
    
    .banner h1 {
        font-size: 32px;
    }
    
    .banner p {
        font-size: 16px;
    }
    
    .title {
        font-size: 24px;
    }
}