/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* 基础样式 */
body {
    background: linear-gradient(135deg, #FAFAFA, #FAFAFA, #FAFAFA);
    color: #333;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    line-height: 1.6;
}

.container {
    background: white;
    border-radius: 25px;
    box-shadow: 0 15px 50px rgba(0, 216, 195, 0.15);
    width: 100%;
    max-width: 1200px;
    padding: 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* 页眉样式 */
header {
    margin-bottom: 40px;
    position: relative;
}

.logo {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #00D8C3, #19F1B2);
    border-radius: 30%;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(0, 216, 195, 0.25);
    position: relative;
    overflow: hidden;
}

.logo img {
    width: 70px;
    height: 70px;
    object-fit: contain;
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    color: #1a2a6c;
    background: linear-gradient(90deg, #141416, #141416);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

.subtitle {
    font-size: 1.3rem;
    color: #5a6d8a;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* 设备检测区域 */
.device-detect {
    background: rgba(0, 216, 195, 0.08);
    border-radius: 18px;
    padding: 18px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 216, 195, 0.15);
    color: #00A693;
}

.info-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    aspect-ratio: 1 / 1; /* 可选，增强比例锁定 */
    margin-right: 12px;
    background: #00A693;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 14px;
    box-sizing: content-box;
}

/* 下载区域 */
.download-section {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    justify-content: center;
    margin-top: 30px;
}

.download-option {
    background: white;
    border-radius: 20px;
    padding: 30px;
    width: 30%;
    min-width: 300px;
    transition: all 0.4s ease;
    border: 1px solid #e0f8f5;
    box-shadow: 0 10px 30px rgba(0, 216, 195, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.download-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #00D8C3, #19F1B2);
    opacity: 0.3;
}

/* 悬停效果 */
.download-option:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 216, 195, 0.2);
    border-color: rgba(0, 216, 195, 0.3);
}

.download-option:hover::before {
    opacity: 1;
}

.option-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 25px;
    width: 100%;
}

.option-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.ios .option-icon {
    background: linear-gradient(135deg, #00D8C3, #19F1B2);
}

.android .option-icon {
    background: linear-gradient(135deg, #4A90E2, #5C9DF5);
}

.miniprogram .option-icon {
    background: linear-gradient(135deg, #2ecc71, #1abc9c);
}

.option-icon img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.option-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: #00897b;
    margin-bottom: 10px;
}

.option-btn {
    background: rgba(0, 216, 195, 0.1);
    border: none;
    border-radius: 50px;
    padding: 10px 25px;
    color: #00A693;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    width: 100%;
    max-width: 200px;
    justify-content: center;
}

.option-btn:hover {
    background: rgba(0, 216, 195, 0.2);
    transform: translateY(-3px);
}

.android .option-btn {
    background: rgba(74, 144, 226, 0.1);
    color: #4A90E2;
}

.android .option-btn:hover {
    background: rgba(74, 144, 226, 0.2);
}

.miniprogram .option-btn {
    background: rgba(46, 204, 113, 0.1);
    color: #2ecc71;
}

.miniprogram .option-btn:hover {
    background: rgba(46, 204, 113, 0.2);
}

.qr-container {
    margin-top: 20px;
    width: 100%;
}

.qr-code {
    width: 180px;
    height: 180px;
    margin: 0 auto;
    background: white;
    padding: 12px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid #e0f8f5;
    position: relative;
    overflow: hidden;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.qr-description {
    margin-top: 20px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #5a6d8a;
}

/* 简洁三大亮点展示区域 */
.features {
    margin-top: 50px;
    padding: 20px 0;
}

.features h3 {
    margin-bottom: 30px;
    color: #00897b;
    font-size: 1.5rem;
    font-weight: 600;
}

.features-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-item {
    text-align: center;
    flex: 1;
    max-width: 350px;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #00897b;
    margin-bottom: 12px;
}

.feature-text {
    font-size: 0.95rem;
    color: #5a6d8a;
    line-height: 1.7;
}

/* 页脚样式 */
footer {
    margin-top: 50px;
    color: #7a8ca5;
    font-size: 0.95rem;
}

footer a {
    color: #00a693;
    text-decoration: none;
    transition: all 0.3s;
}

footer a:hover {
    color: #00897b;
    text-decoration: underline;
}

/* 装饰元素 */
.decorative {
    position: absolute;
    z-index: -1;
    opacity: 0.1;
}

.decorative.circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 15px solid #00D8C3;
    top: -100px;
    right: -100px;
}

.decorative.square {
    width: 150px;
    height: 150px;
    border: 12px solid #19F1B2;
    bottom: -75px;
    left: -75px;
    transform: rotate(45deg);
}

.decorative.triangle {
    width: 0;
    height: 0;
    border-left: 80px solid transparent;
    border-right: 80px solid transparent;
    border-bottom: 140px solid #2ecc71;
    top: 50%;
    left: 10%;
    transform: rotate(25deg);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        padding: 40px;
    }
}

@media (max-width: 992px) {
    .download-section {
        flex-wrap: wrap;
    }
    
    .download-option {
        width: 45%;
        min-width: 280px;
    }
    
    .features-grid {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 30px 20px;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .download-option {
        width: 100%;
        padding: 25px;
    }
    
    .option-title {
        font-size: 1.5rem;
    }
    
    .features-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-item {
        max-width: 100%;
        width: 100%;
        padding: 15px 0;
    }
    
    .decorative {
        display: none;
    }
}

.arrow{
    position: absolute;
    top: 3%;
    left: 77%;
    width: 3rem;
    height: 3rem;
    display: block;
}
.mask{
    width: 100%;
    /* height: 200%; */
    height: 100%;
    position: absolute;
    top:0;
    background-color: #000;
    z-index: 2000;
    opacity: 0.9;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    visibility: hidden;
}
.mask-title{
    background-color: #000;
    border: 1px dashed #FFF;
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    padding: 15px 10px;
    margin-top: 30px
}
.mask-content{
    color: #FFF
}