/* 基础样式 - 深色背景 */
body {
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #121212;
    color: white;
}

/* 内容容器 */
.content {
    text-align: center;
    max-width: 600px;
    padding: 20px;
}

/* 所有页面初始隐藏 */
.page {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
}

/* 活动页面显示 */
.page.active {
    display: block;
}

/* 文字容器 - 控制透明度 */
.text-content {
    opacity: 0; /* 初始完全透明 */
}

/* 渐亮动画 */
.fade-in {
    animation: fadeIn 2s ease-in-out forwards;
}

/* 渐暗动画 */
.fade-out {
    animation: fadeOut 2s ease-in-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* 文字样式 */
h1 {
    font-size: 2.2rem;
    margin-bottom: 25px;
    font-weight: 400;
    color: hsl(332, 100%, 74%);
}

/* 按钮样式 */
.btn {
    padding: 14px 35px;
    margin: 20px;
    background: transparent;
    color: hsl(332, 100%, 74%);
    border: 1px solid rgba(255, 215, 128, 0.8);
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.4s;
    outline: none;
}

/* 最终页面链接样式 */
.final-link {
    display: inline-block;
    margin-top: 40px;
    color: rgba(255, 200, 100, 0.8);
    font-size: 1.3rem;
    text-decoration: none;
}