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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #ffd700;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #fff;
    transition: all 0.3s;
}

.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.notice-box {
    background: rgba(255, 255, 255, 0.1);
    border-left: 4px solid #ffd700;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.notice-box h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #ffd700;
}

.notice-box ul {
    list-style: none;
    padding-left: 0;
}

.notice-box li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.notice-box li:before {
    content: "⚠️";
    position: absolute;
    left: 0;
}

.game-container {
    background: rgba(0, 0, 0, 0.3);
    padding: 2rem;
    border-radius: 12px;
    margin: 3rem 0;
    text-align: center;
}

.game-container h2 {
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.game-frame {
    width: 100%;
    max-width: 800px;
    height: 600px;
    border: none;
    border-radius: 8px;
    margin: 0 auto;
    display: block;
}

.content-section {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    backdrop-filter: blur(10px);
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #ffd700;
}

.content-section p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

footer {
    background: rgba(0, 0, 0, 0.4);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.footer-links a {
    color: #ffd700;
    text-decoration: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

.age-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.age-modal.active {
    display: flex;
}

.age-modal-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.age-modal h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.age-modal p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.age-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.age-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.age-btn:hover {
    transform: scale(1.05);
}

.age-btn.yes {
    background: #4caf50;
    color: #fff;
}

.age-btn.no {
    background: #f44336;
    color: #fff;
}

@media (max-width: 768px) {
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.95);
        padding: 1rem;
        gap: 1rem;
    }

    nav ul.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .game-frame {
        height: 400px;
    }

    .age-modal-content {
        margin: 0 20px;
        padding: 2rem;
    }

    .age-buttons {
        flex-direction: column;
    }
}