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

body {
    font-family: 'Raleway', sans-serif;
    background: linear-gradient(to bottom, #e0f7fa, #ffffff);
    color: #333;
    line-height: 1.7;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
}

.site-header {
    background: #ffffff;
    box-shadow: 0 3px 15px rgba(0, 188, 212, 0.15);
    position: sticky;
    top: 0;
    z-index: 998;
    padding: 1.3rem 0;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 2rem;
    font-weight: 900;
    color: #00bcd4;
    text-decoration: none;
}

.logo-symbol {
    font-size: 2.3rem;
}

.logo-title {
    letter-spacing: 1px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle .bar {
    width: 30px;
    height: 3px;
    background: #00bcd4;
    border-radius: 3px;
    transition: 0.3s;
}

.main-navigation {
    display: flex;
    gap: 2.5rem;
}

.nav-item {
    color: #333;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    padding: 0.5rem 0;
    transition: color 0.3s;
    letter-spacing: 0.3px;
}

.nav-item:hover,
.nav-item.current {
    color: #00bcd4;
}

.hero-banner {
    background: linear-gradient(135deg, #00bcd4 0%, #0097a7 100%);
    color: white;
    padding: 8rem 0;
    text-align: center;
}

.hero-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 30px;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.hero-text p {
    font-size: 1.35rem;
    margin-bottom: 2.5rem;
    font-weight: 400;
    opacity: 0.95;
}

.hero-cta {
    display: inline-block;
    padding: 1.3rem 3rem;
    background: white;
    color: #00bcd4;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    border-radius: 50px;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.hero-cta:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.important-notices {
    padding: 5rem 0;
    background: white;
}

.section-heading {
    font-size: 2.8rem;
    font-weight: 800;
    text-align: center;
    color: #00bcd4;
    margin-bottom: 3rem;
}

.notices-flex {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.notice-item {
    flex: 1;
    min-width: 280px;
    max-width: 400px;
    background: linear-gradient(to bottom, #e0f7fa, #ffffff);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid #00bcd4;
    transition: transform 0.3s;
}

.notice-item:hover {
    transform: translateY(-10px);
}

.notice-symbol {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.notice-item h3 {
    color: #00bcd4;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.notice-item p {
    font-size: 1.05rem;
    line-height: 1.8;
}

.platform-intro {
    padding: 5rem 0;
    background: linear-gradient(to bottom, #e0f7fa, #ffffff);
}

.intro-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #00bcd4;
    margin-bottom: 2rem;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.intro-visual {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.visual-box {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border-left: 5px solid #00bcd4;
    box-shadow: 0 3px 15px rgba(0, 188, 212, 0.1);
}

.visual-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
}

.visual-box h3 {
    color: #00bcd4;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.visual-box p {
    font-size: 1.05rem;
    color: #666;
}

.game-section {
    padding: 5rem 0;
    background: white;
}

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

.game-display {
    max-width: 1200px;
    margin: 0 auto;
    background: #f5f5f5;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 188, 212, 0.15);
    border: 3px solid #00bcd4;
}

.game-iframe {
    width: 100%;
    height: 750px;
    border: none;
    display: block;
}

.game-notice {
    text-align: center;
    margin-top: 2rem;
    font-size: 1.15rem;
    color: #666;
    font-weight: 500;
}

.features-showcase {
    padding: 5rem 0;
    background: linear-gradient(to bottom, #e0f7fa, #ffffff);
}

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

.feature-block {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0, 188, 212, 0.1);
    transition: transform 0.3s;
}

.feature-block:hover {
    transform: translateY(-8px);
}

.feature-emoji {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 1.5rem;
}

.feature-block h3 {
    color: #00bcd4;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-block p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #666;
}

.statistics-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #00bcd4 0%, #0097a7 100%);
    color: white;
}

.stats-display {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 3rem;
}

.stat-column {
    text-align: center;
}

.stat-figure {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.3rem;
    font-weight: 500;
    opacity: 0.95;
}

.closing-cta {
    padding: 5rem 0;
    background: white;
    text-align: center;
}

.closing-cta h2 {
    font-size: 2.8rem;
    font-weight: 800;
    color: #00bcd4;
    margin-bottom: 1.5rem;
}

.closing-cta p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    color: #666;
}

.cta-link {
    display: inline-block;
    padding: 1.3rem 3rem;
    background: linear-gradient(135deg, #00bcd4 0%, #0097a7 100%);
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    border-radius: 50px;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0, 188, 212, 0.3);
}

.cta-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 188, 212, 0.5);
}

.play-container {
    padding: 4rem 0;
    background: white;
    min-height: calc(100vh - 500px);
}

.play-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.play-intro h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #00bcd4;
    margin-bottom: 1rem;
}

.intro-description {
    font-size: 1.2rem;
    color: #666;
}

.gameplay-guide {
    background: linear-gradient(to bottom, #e0f7fa, #ffffff);
    padding: 3rem;
    border-radius: 15px;
    margin-bottom: 3rem;
    border: 2px solid #00bcd4;
}

.gameplay-guide h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #00bcd4;
    margin-bottom: 2rem;
}

.guide-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.guide-entry {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.guide-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.guide-content h3 {
    color: #00bcd4;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.guide-content p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #666;
}

.play-reminder {
    background: linear-gradient(to bottom, #e0f7fa, #ffffff);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 3rem;
    border-left: 5px solid #00bcd4;
    font-size: 1.1rem;
}

.document-page {
    padding: 4rem 0;
    background: white;
    min-height: calc(100vh - 500px);
}

.document-page h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #00bcd4;
    margin-bottom: 1rem;
}

.document-date {
    color: #999;
    font-size: 0.95rem;
    margin-bottom: 3rem;
    font-style: italic;
}

.document-page h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #00bcd4;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
}

.document-page h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #0097a7;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.document-page p,
.document-page ul {
    font-size: 1.08rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.document-page ul {
    padding-left: 2.5rem;
}

.document-notice,
.disclaimer-highlight {
    background: linear-gradient(to bottom, #e0f7fa, #ffffff);
    padding: 2.5rem;
    border-radius: 12px;
    border-left: 5px solid #00bcd4;
    margin-top: 3rem;
}

.disclaimer-highlight ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}

.disclaimer-highlight ul li {
    padding: 0.5rem 0;
    font-size: 1.1rem;
}

.page-footer {
    background: linear-gradient(135deg, #00bcd4 0%, #0097a7 100%);
    color: white;
    padding: 4rem 0 1.5rem;
}

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

.footer-block h4 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-block p {
    font-size: 1.05rem;
    line-height: 1.8;
    opacity: 0.95;
}

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

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

.footer-block a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
    font-size: 1.05rem;
    opacity: 0.9;
}

.footer-block a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.9;
}

.age-gate-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 188, 212, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

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

.age-gate-card {
    background: white;
    padding: 3.5rem;
    border-radius: 20px;
    text-align: center;
    max-width: 550px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.age-gate-header {
    margin-bottom: 2rem;
}

.gate-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 1rem;
}

.age-gate-header h2 {
    font-size: 2.3rem;
    font-weight: 800;
    color: #00bcd4;
}

.gate-message {
    font-size: 1.15rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.gate-question {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #00bcd4;
}

.gate-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn-verify,
.btn-exit {
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    border: none;
    font-size: 1.15rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Raleway', sans-serif;
}

.btn-verify {
    background: linear-gradient(135deg, #00bcd4 0%, #0097a7 100%);
    color: white;
}

.btn-verify:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 188, 212, 0.4);
}

.btn-exit {
    background: #f5f5f5;
    color: #333;
}

.btn-exit:hover {
    background: #e0e0e0;
}

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

    .main-navigation {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 2.5rem;
        gap: 0;
        transition: left 0.3s;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }

    .main-navigation.open {
        left: 0;
    }

    .nav-item {
        padding: 1.2rem 0;
        border-bottom: 1px solid #e0f7fa;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-text p {
        font-size: 1.15rem;
    }

    .intro-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .game-iframe {
        height: 500px;
    }

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

    .stats-display {
        flex-direction: column;
        gap: 2.5rem;
    }

    .age-gate-card {
        margin: 1.5rem;
        padding: 2.5rem;
    }

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

    .btn-verify,
    .btn-exit {
        width: 100%;
    }

    .guide-items {
        grid-template-columns: 1fr;
    }

    .document-page h1 {
        font-size: 2.3rem;
    }

    .document-page h2 {
        font-size: 1.7rem;
    }

    .notices-flex {
        flex-direction: column;
    }
}