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

body {
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a0a2e 100%);
    color: #e0e0e0;
    line-height: 1.6;
    min-height: 100vh;
}

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

.main-header {
    background: rgba(10, 10, 10, 0.95);
    border-bottom: 2px solid #00ffff;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 24px;
    font-weight: 900;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff;
}

.nav-menu {
    position: relative;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 30px;
    height: 3px;
    background: #00ffff;
    border-radius: 2px;
    transition: all 0.3s;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s;
    position: relative;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00ffff, #ff00ff);
    transition: width 0.3s;
}

.nav-links a:hover {
    color: #00ffff;
}

.nav-links a:hover::after {
    width: 100%;
}

.hero-section {
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 255, 255, 0.1) 0%, transparent 100%);
}

.hero-section h1 {
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #00ffff, #ff00ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 50px;
    opacity: 0.9;
}

.notice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.notice-card {
    background: rgba(0, 255, 255, 0.05);
    border: 2px solid #00ffff;
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s;
}

.notice-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
    border-color: #ff00ff;
}

.notice-card .icon {
    font-size: 48px;
    display: block;
    margin-bottom: 15px;
}

.notice-card h3 {
    font-size: 20px;
    color: #00ffff;
    margin-bottom: 10px;
}

.game-section {
    padding: 80px 20px;
}

.game-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 20px;
    color: #ff00ff;
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

.game-container {
    max-width: 900px;
    margin: 0 auto;
    border: 3px solid #00ffff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 0 50px rgba(0, 255, 255, 0.3);
}

.game-frame {
    width: 100%;
    height: 600px;
    border: none;
    display: block;
}

.features-section {
    padding: 80px 20px;
    background: rgba(255, 0, 255, 0.05);
}

.features-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #00ffff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.feature-item {
    text-align: center;
}

.feature-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 22px;
    color: #ff00ff;
    margin-bottom: 15px;
}

.info-section {
    padding: 80px 20px;
}

.info-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
    color: #00ffff;
}

.info-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.8;
}

.info-content p {
    margin-bottom: 20px;
}

.main-footer {
    background: rgba(10, 10, 10, 0.95);
    border-top: 2px solid #ff00ff;
    padding: 60px 20px 20px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: #00ffff;
    font-size: 20px;
    margin-bottom: 15px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #e0e0e0;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #ff00ff;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 255, 255, 0.3);
    opacity: 0.7;
}

.age-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.age-modal.hidden {
    display: none;
}

.age-modal-content {
    background: linear-gradient(135deg, #1a0a2e, #0a0a0a);
    border: 3px solid #00ffff;
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 0 50px rgba(0, 255, 255, 0.5);
}

.age-modal-content h2 {
    font-size: 32px;
    color: #ff00ff;
    margin-bottom: 20px;
}

.age-notice {
    margin-top: 20px;
    font-size: 14px;
    opacity: 0.8;
}

.age-buttons {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    justify-content: center;
}

.btn-yes, .btn-no {
    padding: 15px 40px;
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-yes {
    background: linear-gradient(135deg, #00ffff, #00cccc);
    color: #0a0a0a;
}

.btn-yes:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0, 255, 255, 0.5);
}

.btn-no {
    background: linear-gradient(135deg, #ff00ff, #cc00cc);
    color: #fff;
}

.btn-no:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(255, 0, 255, 0.5);
}

.play-page {
    padding: 60px 20px;
}

.play-page h1 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 20px;
    color: #00ffff;
}

.page-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
}

.game-info-box {
    background: rgba(0, 255, 255, 0.1);
    border: 2px solid #00ffff;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 40px;
}

.game-info-box h3 {
    color: #ff00ff;
    margin-bottom: 15px;
}

.game-info-box ul {
    list-style: none;
}

.game-info-box li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.game-info-box li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: #00ffff;
}

.play-reminder {
    margin-top: 40px;
    padding: 20px;
    background: rgba(255, 0, 255, 0.1);
    border: 2px solid #ff00ff;
    border-radius: 10px;
    text-align: center;
}

.content-page {
    padding: 60px 20px;
}

.content-page h1 {
    font-size: 42px;
    margin-bottom: 20px;
    color: #00ffff;
    text-align: center;
}

.content-page .page-intro {
    text-align: center;
    opacity: 0.7;
    margin-bottom: 60px;
}

.content-block {
    max-width: 800px;
    margin: 0 auto 40px;
    padding: 30px;
    background: rgba(0, 255, 255, 0.05);
    border-left: 4px solid #00ffff;
    border-radius: 10px;
}

.content-block h2 {
    color: #ff00ff;
    font-size: 24px;
    margin-bottom: 15px;
}

.content-block p {
    margin-bottom: 15px;
}

.content-block ul {
    margin: 15px 0;
    padding-left: 30px;
}

.content-block li {
    margin-bottom: 10px;
}

.highlight-block {
    border-left-color: #ff00ff;
    border-left-width: 6px;
    background: rgba(255, 0, 255, 0.1);
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        flex-direction: column;
        width: 250px;
        padding: 20px;
        border: 2px solid #00ffff;
        border-radius: 10px;
        margin-top: 10px;
        display: none;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hero-section h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .notice-grid {
        grid-template-columns: 1fr;
    }
    
    .game-frame {
        height: 400px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .age-modal-content {
        margin: 20px;
        padding: 30px 20px;
    }
    
    .age-buttons {
        flex-direction: column;
    }
    
    .btn-yes, .btn-no {
        width: 100%;
    }
}