/* 全局样式 */
html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 900px;
    width: 100%;
    text-align: center;
    max-height: calc(100vh - 40px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

h1 {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.subtitle {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    width: 100%;
    max-width: 700px;
}

.game-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.game-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.game-card h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: #333;
}

.game-card p {
    color: #666;
    font-size: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
        margin-bottom: 20px;
    }

    .game-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .game-card {
        padding: 30px 20px;
    }

    .game-icon {
        font-size: 3rem;
    }

    .game-card h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }

    .game-grid {
        gap: 15px;
    }

    .game-card {
        padding: 25px 15px;
    }

    .game-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }

    .game-card h3 {
        font-size: 1.3rem;
        margin-bottom: 8px;
    }

    .game-card p {
        font-size: 0.9rem;
    }
}