* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #1a2a6c, #2c3e50);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    padding: 20px;
    background-attachment: fixed;
}

.container {
    text-align: center;
    max-width: 800px;
    background: rgba(0, 0, 0, 0.65);
    border-radius: 25px;
    padding: 45px;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

h1 {
    font-size: 3rem;
    margin-bottom: 40px;
    text-shadow: 0 3px 15px rgba(0, 0, 0, 0.4);
    letter-spacing: 1.5px;
    font-weight: 700;
    background: linear-gradient(to right, #4cc9f0, #2a9d8f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.game-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 85%;
    max-width: 450px;
    padding: 24px;
    margin: 25px 0;
    background: linear-gradient(145deg, #4cc9f0, #2a9d8f);
    color: white;
    font-size: 1.6rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 22px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.game-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: rotate(30deg);
    transition: transform 0.6s;
}

.game-btn:hover::before {
    transform: rotate(30deg) translate(50%, 50%);
}

.game-btn img {
    margin-right: 18px;
    height: 35px;
    transition: transform 0.3s;
}

.game-btn:hover img {
    transform: scale(1.1);
}

.game-btn:hover {
    background: linear-gradient(145deg, #3aa7e9, #248a7e);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
}

.footer {
    margin-top: 50px;
    font-size: 1rem;
    color: #a0d2ff;
    opacity: 0.9;
    line-height: 1.6;
}

.footer p {
    margin: 8px 0;
}

/* 响应式优化 */
@media (max-width: 600px) {
    .container {
        padding: 35px;
    }
    
    h1 {
        font-size: 2.4rem;
    }
    
    .game-btn {
        font-size: 1.4rem;
        padding: 20px;
    }
    
    .game-btn img {
        height: 30px;
    }
}