style.css

/* 全局样式 */
body {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #e0f2f7 0%, #c8e6c9 100%); /* 柔和的蓝绿渐变背景 */
    color: #333;
    overflow: hidden; /* 防止滚动条 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 隐藏类 */
.hidden {
    display: none !important;
}

/* 加载动画覆盖层 */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.95); /* 半透明白色背景 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.6s ease-out, visibility 0.6s ease-out;
}

.spinner-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: translateY(0); /* 初始位置 */
    opacity: 1;
    transition: transform 0.5s ease-out, opacity 0.5s ease-out;
}

/* 加载动画 */
.spinner {
    border: 6px solid #e0e0e0; /* 浅灰色 */
    border-top: 6px solid #4CAF50; /* 绿色 */
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite; /* 更流畅的动画曲线 */
    margin-bottom: 20px;
    box-shadow: 0 0 15px rgba(76, 175, 80, 0.3); /* 绿色光晕 */
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    font-size: 1.2em;
    color: #555;
    animation: pulse 1.5s infinite alternate; /* 文字呼吸效果 */
}

@keyframes pulse {
    0% { opacity: 0.7; }
    100% { opacity: 1; }
}

/* 动画过渡类 */
.fade-out {
    opacity: 0 !important;
    visibility: hidden !important;
}

/* 主内容区域 */
#main-content {
    text-align: center;
    width: 100%;
    max-width: 550px;
    padding: 20px;
    box-sizing: border-box;
    opacity: 0; /* 初始隐藏 */
    transform: translateY(20px); /* 初始位置略低 */
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

#main-content.fade-in-up {
    opacity: 1;
    transform: translateY(0);
}

.card {
    background-color: #FFFFFF;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1); /* 更深的阴影 */
    padding: 40px;
    box-sizing: border-box;
    animation: scaleIn 0.5s ease-out forwards; /* 卡片出现动画 */
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

h1 {
    color: #2C3E50;
    margin-bottom: 10px;
    font-size: 2.3em;
    font-weight: 700;
}

.subtitle {
    color: #777;
    margin-bottom: 35px;
    font-size: 1.05em;
    line-height: 1.6;
}

/* 按钮容器 */
.button-container {
    display: flex;
    flex-direction: column; /* 手机上垂直排列 */
    gap: 20px;
    justify-content: center;
    align-items: center;
}

/* 按钮基础样式 */
button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 320px;
    padding: 18px 25px;
    border: none;
    border-radius: 10px;
    font-size: 1.25em;
    font-weight: bold;
    color: #FFFFFF;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    position: relative; /* 用于伪元素动画 */
    overflow: hidden; /* 隐藏伪元素溢出 */
}

button img {
    width: 32px;
    height: 32px;
    margin-right: 15px;
    transition: transform 0.2s ease; /* 图片动画 */
}

button span {
    line-height: 1;
    position: relative;
    z-index: 2; /* 确保文字在伪元素之上 */
}

/* 按钮背景动画伪元素 */
button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1); /* 浅色覆盖 */
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease-out;
    z-index: 1;
}

button:hover::before {
    transform: scaleX(1);
}

/* 微信按钮样式 */
.wechat-button {
    background: linear-gradient(45deg, #4CAF50, #66BB6A); /* 微信绿渐变 */
}

.wechat-button:hover {
    background: linear-gradient(45deg, #45A049, #5CB85C);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
}

/* 支付宝按钮样式 */
.alipay-button {
    background: linear-gradient(45deg, #007BFF, #2196F3); /* 支付宝蓝渐变 */
}

.alipay-button:hover {
    background: linear-gradient(45deg, #0069D9, #1E88E5);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 123, 255, 0.4);
}

/* QQ 按钮样式 (深蓝色/紫色调) */
.qq-button {
    background: linear-gradient(45deg, #1A73E8, #4285F4); /* QQ蓝 */
}

.qq-button:hover {
    background: linear-gradient(45deg, #1565C0, #3367D6);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.4);
}

button:hover img {
    transform: scale(1.1); /* 图片放大效果 */
}

/* 响应式设计 */
@media (min-width: 768px) {
    .button-container {
        flex-direction: row; /* 桌面端水平排列 */
    }

    button {
        width: auto;
        min-width: 240px;
    }
}

/* --- 微信页面样式 --- */
.wechat-page-body {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%); /* 微信专属浅绿渐变 */
    color: #2E7D32;
}

.wechat-page-body .card {
    background-color: #FFFFFF;
    box-shadow: 0 10px 30px rgba(46, 125, 50, 0.15); /* 微信绿色阴影 */
}

.wechat-page-body h1 {
    color: #2E7D32;
}

.wechat-page-body p {
    color: #4CAF50;
}

/* 移除了 .mode-switch-container 和 .mode-switch-button 的样式 */

/* 微信页面内部的二维码容器布局 */
.wechat-qr-sections {
    display: flex;
    flex-direction: column; /* 默认垂直排列 */
    gap: 30px; /* 两个二维码区域之间的间距 */
    margin-top: 20px;
}

@media (min-width: 768px) {
    .wechat-qr-sections {
        flex-direction: row; /* 桌面端水平排列 */
        justify-content: center;
        align-items: flex-start; /* 顶部对齐 */
    }
}

.qr-code-section {
    padding: 20px;
    background-color: #F8F8F8; /* 略有区分的背景色 */
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    flex: 1; /* 让每个section占据可用空间 */
    min-width: 280px; /* 最小宽度，防止过小 */
    max-width: 45%; /* 最大宽度 */
    box-sizing: border-box;
    text-align: center; /* 居中内容 */
}

.qr-code-section h2 {
    color: #4CAF50;
    font-size: 1.5em;
    margin-bottom: 15px;
}

.qr-code-container {
    background-color: #FFFFFF;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    margin-top: 15px; /* 调整与上方文字的距离 */
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeInUp 0.6s ease-out forwards; /* 元素出现动画 */
    animation-delay: 0.3s;
    opacity: 0;
    transform: translateY(20px);
}

.qr-code-container img {
    width: 220px;
    height: 220px;
    border: 2px solid #EEE;
    border-radius: 10px;
    margin-bottom: 18px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.qr-code-container p.fallback-text {
    font-size: 0.95em;
    color: #666;
    line-height: 1.5;
    margin-bottom: 5px;
}

/* 中间页的跳转按钮样式 - 默认绿色 (给微信页面使用) */
.manual-redirect-button {
    margin-top: 30px;
    background: linear-gradient(45deg, #00C853, #64DD17); /* 鲜艳的绿色 */
    color: white;
    padding: 15px 30px;
    font-size: 1.3em;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 200, 83, 0.3);
    transition: all 0.3s ease;
    text-decoration: none; /* 移除a标签下划线 */
    display: inline-block; /* 确保padding和margin生效 */
    font-weight: bold;
}

.manual-redirect-button:hover {
    background: linear-gradient(45deg, #00B04F, #57C714);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 200, 83, 0.4);
}

/* 支付宝页面中的手动跳转按钮特定样式 (蓝色) */
.alipay-page-body .manual-redirect-button {
    background: linear-gradient(45deg, #007BFF, #2196F3); /* 支付宝蓝渐变 */
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.3);
}

.alipay-page-body .manual-redirect-button:hover {
    background: linear-gradient(45deg, #0069D9, #1E88E5);
    box-shadow: 0 8px 25px rgba(0, 123, 255, 0.4);
}

/* QQ 页面中的手动跳转按钮特定样式 (QQ蓝) */
.qq-page-body .manual-redirect-button {
    background: linear-gradient(45deg, #1A73E8, #4285F4); /* QQ蓝渐变 */
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.3);
}

.qq-page-body .manual-redirect-button:hover {
    background: linear-gradient(45deg, #1565C0, #3367D6);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.4);
}


/* --- 支付宝页面样式 --- */
.alipay-page-body {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%); /* 支付宝专属浅蓝渐变 */
    color: #1976D2;
}

.alipay-page-body .card {
    background-color: #FFFFFF;
    box-shadow: 0 10px 30px rgba(25, 118, 210, 0.15); /* 支付宝蓝色阴影 */
}

.alipay-page-body h1 {
    color: #1976D2;
}

.alipay-page-body p {
    color: #2196F3;
}

#countdown {
    font-size: 2.8em; /* 倒计时数字更大 */
    font-weight: 900; /* 更粗 */
    color: #007BFF;
    margin-top: 25px;
    letter-spacing: 2px; /* 字间距 */
    text-shadow: 0 0 10px rgba(0, 123, 255, 0.4); /* 蓝色光晕 */
    animation: scalePulse 1.2s infinite alternate; /* 数字呼吸放大动画 */
}

@keyframes scalePulse {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.05); opacity: 1; }
}

/* --- QQ页面样式 --- */
.qq-page-body {
    background: linear-gradient(135deg, #e0f7fa 0%, #b3e5fc 100%); /* 浅蓝色背景 */
    color: #0277BD; /* 深蓝色文字 */
}

.qq-page-body .card {
    background-color: #FFFFFF;
    box-shadow: 0 10px 30px rgba(2, 119, 189, 0.15); /* QQ蓝色阴影 */
}

.qq-page-body h1 {
    color: #0277BD;
}

.qq-page-body p {
    color: #039BE5;
}

.qq-page-body .icon {
    font-size: 4em; /* 保持图标大小一致 */
    margin-bottom: 30px;
    color: #039BE5; /* QQ蓝 */
}


/* 页面元素进入动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alipay-page-body h1,
.alipay-page-body p,
.alipay-page-body .icon,
.wechat-page-body h1,
.wechat-page-body p,
.wechat-page-body .icon,
.qq-page-body h1, /* 新增QQ页面的动画 */
.qq-page-body p,
.qq-page-body .icon {
    animation: fadeInUp 0.6s ease-out forwards;
}
.alipay-page-body .icon, .wechat-page-body .icon, .qq-page-body .icon { animation-delay: 0.1s; }
.alipay-page-body h1, .wechat-page-body h1, .qq-page-body h1 { animation-delay: 0.2s; }
.alipay-page-body p:nth-of-type(1), .wechat-page-body p:nth-of-type(1), .qq-page-body p:nth-of-type(1) { animation-delay: 0.3s; }
.alipay-page-body p:nth-of-type(2), .wechat-page-body p:nth-of-type(2), .qq-page-body p:nth-of-type(2) { animation-delay: 0.4s; }