* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}
body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4eaf5 100%);
    min-height: 100vh;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}
.container {
    width: 100%;
    max-width: 500px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-top: 30px;
}
/* 应用Logo样式（引用本地logo.png） */
.app-header {
    padding: 40px 20px 20px;
    text-align: center;
}
.app-logo {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    margin: 0 auto;
    /* 引用目录下的logo.png，若logo在子目录需补全路径（如./images/logo.png） */
    background: url("logo.png") no-repeat center;
    background-size: cover;
    border: 4px solid #f5f5f5;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.app-name {
    font-size: 26px;
    font-weight: 600;
    color: #2d3748;
    margin: 20px 0 8px;
}
.app-desc {
    font-size: 15px;
    color: #718096;
    line-height: 1.5;
    max-width: 80%;
    margin: 0 auto;
}
/* 下载按钮样式 */
.download-section {
    padding: 20px 30px 30px;
}
.download-btn {
    display: block;
    width: 100%;
    padding: 18px 0;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: #fff;
    text-align: center;
    text-decoration: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.3);
}
.download-btn:hover {
    background: linear-gradient(135deg, #3182ce 0%, #2b6cb0 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(66, 153, 225, 0.4);
}
.download-btn:active {
    transform: translateY(0);
}
.device-tag {
    display: inline-block;
    font-size: 14px;
    padding: 3px 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    margin-left: 8px;
}
/* 二维码区域样式 */
.qrcode-section {
    padding: 0 30px 30px;
    text-align: center;
}
.qrcode-title {
    font-size: 16px;
    color: #2d3748;
    margin-bottom: 15px;
    font-weight: 500;
}
.qrcode-container {
    width: 220px;
    height: 220px;
    margin: 0 auto;
    background: #fff;
    padding: 12px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.qrcode-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.qrcode-tip {
    font-size: 13px;
    color: #718096;
    margin-top: 12px;
    line-height: 1.4;
}
/* 美化微信提示弹窗（自定义弹窗样式） */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    display: none;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.modal-content {
    width: 100%;
    max-width: 380px;
    background: #fff;
    border-radius: 16px;
    padding: 30px 25px;
    text-align: center;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 28px;
    height: 28px;
    background: #f5f5f5;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s;
}
.modal-close:hover {
    background: #eee;
}
.modal-close::before, .modal-close::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 2px;
    background: #718096;
}
.modal-close::before {
    transform: rotate(45deg);
}
.modal-close::after {
    transform: rotate(-45deg);
}
.modal-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%237BB32E'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z'/%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
}
.modal-title {
    font-size: 18px;
    color: #2d3748;
    font-weight: 600;
    margin-bottom: 12px;
}
.modal-desc {
    font-size: 15px;
    color: #718096;
    line-height: 1.6;
    margin-bottom: 20px;
    text-align: left;
}
.modal-desc li {
    margin-bottom: 8px;
    list-style-type: disc;
    list-style-position: inside;
}
.modal-btn {
    display: inline-block;
    padding: 12px 30px;
    background: #4299e1;
    color: #fff;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s;
    border: none;
    outline: none;
}
.modal-btn:hover {
    background: #3182ce;
}
/* 底部说明样式 */
.footer-tip {
    padding: 0 30px 30px;
    font-size: 12px;
    color: #a0aec0;
    text-align: center;
    line-height: 1.5;
}