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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #0A0C1C;
    min-height: 100vh;
    color: white;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    cursor: pointer;
    user-select: none;
}

.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 40px 20px;
    position: relative;
    text-align: center;
}

/* Logo区域 */
.logo-section {
    text-align: center;
    margin-bottom: 120px;
    margin-top: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 24px;
    margin: 0 auto 40px;
    display: block;
}

.app-name {
    font-size: 30px;
    font-weight: 400;
    margin-bottom: 24px;
    letter-spacing: 3px;
    color: #ffffff;
}

.subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    max-width: 300px;
    margin: 0 auto;
}

/* 下载区域 */
.download-section {
    width: 100%;
    max-width: 380px;
    margin-bottom: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.download-btn {
    width: 100%;
    height: 56px;
    background: linear-gradient(135deg, #1E90FF 0%, #0066CC 100%);
    border: none;
    border-radius: 16px;
    color: white;
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 24px rgba(30, 144, 255, 0.3);
    letter-spacing: 1px;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(30, 144, 255, 0.4);
}

.download-btn:active {
    transform: translateY(0);
}

/* 底部版权 */
.footer {
    position: fixed;
    bottom: 40px;
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
    font-weight: 300;
    margin: 0;
}

/* 移动端响应式设计 */
@media (max-width: 480px) {
    .container {
        padding: 30px 15px;
    }

    .logo {
        width: 110px;
        height: 110px;
        border-radius: 22px;
        margin-bottom: 32px;
    }

    .app-name {
        font-size: 28px;
        margin-bottom: 20px;
    }

    .subtitle {
        font-size: 15px;
    }

    .download-section {
        max-width: 340px;
    }

    .download-btn {
        height: 52px;
        font-size: 16px;
    }

    .logo-section {
        margin-bottom: 100px;
        margin-top: 40px;
    }
}

@media (max-width: 360px) {
    .download-section {
        max-width: 300px;
    }

    .app-name {
        font-size: 24px;
    }

    .logo {
        width: 100px;
        height: 100px;
        border-radius: 20px;
    }
}

/* PC端限制 */
@media (min-width: 769px) {
    body {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
    }

    .container {
        display: none;
    }
}

/* 添加一些微妙的动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-section {
    animation: fadeInUp 0.8s ease-out;
}

.input-section {
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.footer {
    animation: fadeInUp 0.8s ease-out 0.4s both;
}