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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    line-height: 1.6;
}

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

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

.age-gate-content {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    color: white;
}

.age-gate-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

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

.age-gate-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

.age-gate-buttons button {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.btn-yes {
    background: white;
    color: #6366f1;
}

.btn-yes:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.3);
}

.btn-no {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

.btn-no:hover {
    background: rgba(255, 255, 255, 0.3);
}

header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    width: 100%;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #6366f1;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

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

.nav-menu li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    transition: width 0.3s ease;
}

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

.nav-menu li a:hover {
    color: #6366f1;
}

.hero-section {
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 8rem 2rem 6rem;
    text-align: center;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    color: white;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: white;
    color: #6366f1;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.hero-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
}

main {
    background: white;
}

.info-section {
    padding: 5rem 2rem;
    background: white;
}

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

.info-container h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.info-container > p {
    text-align: center;
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 4rem;
    color: #666;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.info-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.info-card:hover {
    transform: translateY(-10px);
    border-color: #6366f1;
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
}

.info-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.info-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #6366f1;
}

.info-card p {
    color: #666;
    font-size: 1.05rem;
}

.notice-section {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #fff5f5 0%, #fef3ff 100%);
}

.notice-container {
    max-width: 1000px;
    margin: 0 auto;
}

.notice-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    border-left: 6px solid #f59e0b;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.notice-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #f59e0b;
}

.notice-card ul {
    list-style: none;
}

.notice-card li {
    padding: 1rem 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 1.1rem;
    color: #333;
}

.notice-card li:last-child {
    border-bottom: none;
}

.notice-card strong {
    color: #6366f1;
}

.game-section {
    padding: 5rem 2rem;
    background: white;
}

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

.game-container h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-intro {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
}

.game-frame {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.game-frame iframe {
    width: 100%;
    height: 700px;
    display: block;
}

.features-section {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03), rgba(139, 92, 246, 0.03));
}

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

.features-container h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.feature-item {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
}

.feature-number {
    display: inline-block;
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.feature-item p {
    color: #666;
    font-size: 1.05rem;
}

.responsibility-section {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.responsibility-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.responsibility-container h2 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
}

.responsibility-container p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

footer {
    background: #1f2937;
    color: white;
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #6366f1;
}

.footer-section p {
    color: #9ca3af;
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #6366f1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        padding: 1rem 0;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .info-container h2,
    .game-container h2,
    .features-container h2,
    .responsibility-container h2 {
        font-size: 2rem;
    }

    .game-frame iframe {
        height: 500px;
    }

    .age-gate-content {
        padding: 2rem;
        margin: 1rem;
    }

    .age-gate-content h2 {
        font-size: 1.5rem;
    }

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

    .features-list {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}