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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Logo区域 */
.logo-section {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    background: #fff;
    padding: 10px;
}

/* 标题区域 */
.header-section {
    text-align: center;
    margin-bottom: 40px;
    color: #fff;
}

.title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.slogan {
    font-size: 24px;
    font-weight: 300;
    opacity: 0.95;
}

/* 下载按钮 */
.download-section {
    text-align: center;
    margin-bottom: 60px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    color: #667eea;
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.download-btn svg {
    width: 24px;
    height: 24px;
}

/* 产品截图区域 */
.screenshots-section {
    margin-bottom: 60px;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.screenshot-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.screenshot-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.screenshot-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    font-weight: 300;
}

.phone-frame {
    position: relative;
    background: #1a1a1a;
    border-radius: 30px;
    padding: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
    max-width: 100%;
}

.phone-frame:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.4);
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 24px;
    background: #1a1a1a;
    border-radius: 0 0 16px 16px;
    z-index: 10;
}

.screenshot {
    width: 100%;
    height: auto;
    border-radius: 20px;
    display: block;
    background: #fff;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 40px 20px;
    color: rgba(255, 255, 255, 0.9);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    margin-top: 60px;
}

.copyright {
    margin-bottom: 15px;
    font-size: 14px;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 14px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #fff;
    text-decoration: underline;
}

.separator {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .title {
        font-size: 36px;
    }

    .slogan {
        font-size: 20px;
    }

    .screenshot-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
    }

    .screenshot-title {
        font-size: 24px;
    }

    .screenshot-subtitle {
        font-size: 14px;
    }

    .logo {
        width: 100px;
        height: 100px;
    }
}

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

    .title {
        font-size: 28px;
    }

    .slogan {
        font-size: 18px;
    }

    .download-btn {
        padding: 14px 28px;
        font-size: 16px;
    }

    .screenshot-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .screenshot-title {
        font-size: 22px;
    }

    .screenshot-subtitle {
        font-size: 13px;
    }

    .phone-frame {
        padding: 10px;
        border-radius: 25px;
    }

    .phone-notch {
        width: 100px;
        height: 20px;
    }
}