* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

:root {
    --primary-color: #ffcc00;
    --secondary-color: #1a1a1a;
    --accent-color: #f7931a;
    --text-color: #333;
    --light-text: #666;
    --background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    --card-bg: #ffffff;
    --border-radius: 16px;
    --box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

body {
    background: var(--background);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    padding: 0;
    background-attachment: fixed;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 15px;
}

/* 移动端首屏优化 */
.first-screen {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部优化 */
.compact-header {
    text-align: center;
    padding: 15px 0 5px;
    margin-bottom: 10px;
}

.avatar-container {
    width: 80px;
    height: 80px;
    margin: 0 auto 10px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-color);
    box-shadow: var(--box-shadow);
}

.avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--secondary-color);
}

.description {
    font-size: 0.9rem;
    color: var(--light-text);
    margin: 0 auto;
    padding: 10px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    white-space: pre-wrap;
    line-height: 1.6;
}

/* 下载入口 - 首屏核心内容 */
.download-section {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 10px 0 20px;
}

.download-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.download-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 2px solid var(--primary-color);
    position: relative;
}

.download-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-color);
    color: white;
    padding: 3px 8px;
    font-size: 0.7rem;
    border-radius: 0 0 0 10px;
}

.download-icon {
    width: 100%;
    height: 60px;
    object-fit: contain;
    padding: 8px;
    background: rgba(247, 147, 26, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.download-content {
    padding: 12px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.download-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--secondary-color);
    text-align: center;
    flex-grow: 1;
}

.download-btn {
    display: block;
    background: var(--primary-color);
    color: var(--secondary-color);
    text-align: center;
    padding: 8px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    margin-top: 5px;
    border: 1px solid var(--secondary-color);
    font-size: 0.9rem;
}

.download-btn:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}

/* 联系信息优化 */
.contact-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 15px;
    margin: 15px 0;
    box-shadow: var(--box-shadow);
    text-align: center;
}

.contact-title {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    background: #f9f9f9;
    border-radius: 12px;
}

.contact-icon {
    font-size: 1.8rem;
    margin-bottom: 8px;
    color: var(--accent-color);
}

.contact-label {
    font-size: 0.85rem;
    color: var(--light-text);
    margin-bottom: 5px;
}

.contact-value {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--accent-color);
}

.contact-btn {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 6px 15px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 0.85rem;
    width: 100%;
}

.contact-btn:hover {
    background: #e07d0d;
    transform: scale(1.03);
}

/* 其他内容 */
.other-links {
    margin-top: 20px;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 15px 0 10px;
    padding-left: 10px;
    position: relative;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 70%;
    width: 4px;
    background: var(--accent-color);
    border-radius: 10px;
}

.link-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 15px;
}

.link-item {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 12px;
}

.link-icon {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 10px;
}

.link-text {
    flex-grow: 1;
}

.link-name {
    font-weight: 600;
    margin-bottom: 3px;
}

.link-desc {
    font-size: 0.85rem;
    color: var(--light-text);
}

.link-btn {
    display: inline-block;
    background: var(--primary-color);
    color: var(--secondary-color);
    text-align: center;
    padding: 8px 15px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--secondary-color);
    font-size: 0.85rem;
    min-width: 80px;
}

.link-btn:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    text-align: center;
    margin-top: 20px;
    padding: 15px 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    color: var(--light-text);
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: var(--border-radius);
}

/* 通知 */
.notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 25px;
    border-radius: 50px;
    font-size: 0.95rem;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    max-width: 90%;
    text-align: center;
}

.notification.show {
    opacity: 1;
}

/* 浮动按钮 */
.floating-contact {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.floating-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    font-size: 1.3rem;
    text-decoration: none;
    transition: var(--transition);
}

.floating-btn:hover {
    transform: translateY(-3px);
}

/* 响应式调整 */
@media (min-width: 768px) {
    .container {
        max-width: 600px;
        padding: 20px;
    }
    
    .download-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .link-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .download-grid {
        gap: 10px;
    }
    
    .download-icon {
        height: 50px;
    }
    
    .download-title {
        font-size: 0.85rem;
    }
    
    .download-btn {
        font-size: 0.8rem;
        padding: 6px;
    }
    
    .contact-value {
        font-size: 0.9rem;
    }
    
    .contact-btn {
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 1.1rem;
    }
}