/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 通用容器 */
.section {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* 按钮样式 */
button {
    cursor: pointer;
    border: none;
    outline: none;
    transition: all 0.3s ease;
}

button:hover {
    transform: translateY(-2px);
}

/* 链接样式 */
a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

a:hover {
    color: #007bff;
}

/* 响应式设计 - 基础设置 */
@media (max-width: 768px) {
    .section-container {
        padding: 0 15px;
    }
    
    /* 确保字体在移动端清晰显示 */
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

@media (max-width: 480px) {
    .section-container {
        padding: 0 10px;
    }
}

.home-section {
    background: url('../images/firstpage.png') no-repeat center top;
    background-size: cover;
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: flex-start; /* 顶部对齐 */
    justify-content: center;
}

.home-content {
    margin-top: 80px; /* 距离顶部适当下移，避免被导航栏遮挡 */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    max-width: 900px;
    z-index: 2;
}

.main-title {
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    text-shadow: 0 4px 24px rgba(0,0,0,0.18);
    margin-bottom: 18px;
    margin-top: 0;
    letter-spacing: 2px;
}

.sub-title {
    font-size: 12px;
    color: #e6e6e6;
    margin-bottom: 38px;
    letter-spacing: 0.6em;
    text-align: center;
    display: block;
    width: 100%;
    max-width: 1000px;
}

.download-button {
    font-size: 24px;
    padding: 18px 48px;
    border: 2px solid #fff;
    border-radius: 32px;
    background: rgba(255,255,255,0.08);
    color: #fff;
    margin-top: 0;
    box-shadow: 0 2px 16px rgba(0,0,0,0.10);
    font-weight: 700;
    transition: background 0.2s;
}
.download-button:hover {
    background: rgba(255,255,255,0.18);
}

/* 移动端样式已移至 mobile.css 文件 */

.download-text {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
}