/* 全局样式 */
:root {
    --primary: #4facfe;
    --secondary: #00f2fe;
    --accent: #5cb85c;
    --text-dark: #333;
    --text-light: #fff;
    --bg-light: #f8f9fa;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'SJxingkai-C', sans-serif;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--text-dark);
    line-height: 1.6;
    padding: 0;
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* 头部样式 */
.header {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.header h3 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(to right, #ffffff, #f0f0f0);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header p {
    font-size: 1.2rem;
    color: white;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
    margin-bottom: 0;
}

/* 主内容区样式 */
.unit-100 {
    width: 100%;
}

.language {
    text-align: center;
    margin: 0 auto;
    position: relative;
    padding: 30px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.language p {
    font-size: 1.5rem;
    margin: 25px 0 15px;
    color: var(--primary);
    font-weight: bold;
    position: relative;
    display: inline-block;
}

.language p::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    border-radius: 3px;
}

/* 按钮样式 */
.btn2 {
    display: inline-block;
    vertical-align: top;
    font-size: 16px;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    margin: 10px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    padding: 12px 28px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.4);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn2::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn2:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(79, 172, 254, 0.6);
}

.btn2:hover::before {
    left: 100%;
}

.btn-outline2 {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline2:hover {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: var(--text-light);
    border-color: transparent;
}

/* 图片样式 */
.language img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin-top: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.language img:hover {
    transform: scale(1.02);
}

/* 页脚样式 */
.footer {
    text-align: center;
    padding: 30px 20px;
    margin-top: 50px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    color: var(--text-light);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header h3 {
        font-size: 2rem;
    }

    .language p {
        font-size: 1.2rem;
    }

    .btn2 {
        font-size: 14px;
        padding: 10px 20px;
        margin: 8px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 20px 15px;
    }

    .header h3 {
        font-size: 1.8rem;
    }

    .language {
        padding: 15px;
    }

    .btn2 {
        display: block;
        width: 80%;
        margin: 10px auto;
    }
}

/* 动画效果 */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

.language {
    animation: float 6s ease-in-out infinite;
}

/* 下载区域分组样式 */
.download-group {
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}