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

body {
    font-family: 'Raleway', sans-serif;
    background: #0f172a;
    color: #cbd5e1;
    min-height: 100vh;
    width: 100%;
    display: block;
}

.sidebar {
    width: 280px;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    border-right: 2px solid #06B6D4;
    position: fixed;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    z-index: 1000;
}

.sidebar-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid rgba(6, 182, 212, 0.3);
}

.nav-logo {
    margin-bottom: 1rem;
}

.brand-name {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: 3px;
    background: linear-gradient(135deg, #06B6D4, #0891B2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-menu {
    list-style: none;
    flex: 1;
}

.sidebar-menu li {
    margin-bottom: 0.5rem;
}

.sidebar-menu a {
    display: block;
    padding: 1rem 1.5rem;
    color: #cbd5e1;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 1.05rem;
}

.sidebar-menu a:hover,
.sidebar-menu a.menu-active {
    background: linear-gradient(135deg, #06B6D4, #0891B2);
    color: #0f172a;
    transform: translateX(5px);
}

.sidebar-footer {
    padding-top: 1.5rem;
    border-top: 2px solid rgba(6, 182, 212, 0.3);
    text-align: center;
}

.footer-notice {
    background: rgba(6, 182, 212, 0.1);
    padding: 0.5rem;
    margin: 0.5rem 0;
    border-radius: 8px;
    font-weight: 700;
    color: #06B6D4;
    font-size: 0.95rem;
}

.mobile-toggle {
    display: none;
}

.main-content {
    margin-left: 280px;
    flex: 1;
    padding: 2rem;
    width: calc(100% - 280px);
}

.welcome-banner {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(8, 145, 178, 0.2));
    padding: 3rem;
    border-radius: 15px;
    text-align: center;
    margin-bottom: 3rem;
    border: 2px solid #06B6D4;
}

.welcome-banner h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #06B6D4;
    margin-bottom: 0.8rem;
}

.subtitle {
    font-size: 1.2rem;
    color: #94a3b8;
    font-weight: 400;
}

.intro-section {
    margin-bottom: 3rem;
}

.intro-text h2 {
    color: #06B6D4;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.intro-text p {
    line-height: 1.8;
    color: #94a3b8;
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

.key-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.point-card {
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid;
}

.point-card.cyan {
    background: rgba(6, 182, 212, 0.05);
    border-color: #06B6D4;
}

.point-card.teal {
    background: rgba(8, 145, 178, 0.05);
    border-color: #0891B2;
}

.point-card.blue {
    background: rgba(14, 165, 233, 0.05);
    border-color: #0ea5e9;
}

.point-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.point-card h3 {
    color: #06B6D4;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.point-card p {
    color: #94a3b8;
    line-height: 1.7;
}

.featured-game {
    margin-bottom: 3rem;
}

.featured-game h2 {
    text-align: center;
    font-size: 2.2rem;
    color: #06B6D4;
    margin-bottom: 1rem;
    font-weight: 700;
}

.game-description {
    text-align: center;
    color: #94a3b8;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.game-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 40px rgba(6, 182, 212, 0.3);
}

.game-iframe {
    width: 100%;
    height: 650px;
    border: none;
    display: block;
}

.benefits {
    margin-bottom: 3rem;
}

.benefits h2 {
    text-align: center;
    font-size: 2.2rem;
    color: #06B6D4;
    margin-bottom: 2rem;
    font-weight: 700;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.benefit {
    background: rgba(6, 182, 212, 0.05);
    padding: 1.8rem;
    border-radius: 10px;
    border-left: 4px solid #06B6D4;
}

.benefit-emoji {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
}

.benefit h4 {
    color: #06B6D4;
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.benefit p {
    color: #94a3b8;
    line-height: 1.7;
}

.responsibility {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(8, 145, 178, 0.1));
    padding: 3rem;
    border-radius: 15px;
    border: 2px solid rgba(6, 182, 212, 0.3);
    margin-bottom: 3rem;
}

.responsibility h2 {
    text-align: center;
    color: #06B6D4;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.responsibility-content > p {
    text-align: center;
    color: #94a3b8;
    margin-bottom: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.responsibility-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.resp-item {
    background: rgba(15, 23, 42, 0.5);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.resp-item strong {
    color: #06B6D4;
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.modal-overlay {
    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;
}

.modal-box {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    padding: 3rem;
    border-radius: 15px;
    max-width: 550px;
    text-align: center;
    border: 3px solid #06B6D4;
    box-shadow: 0 0 60px rgba(6, 182, 212, 0.5);
}

.modal-box h2 {
    font-size: 2.2rem;
    color: #06B6D4;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.modal-box p {
    color: #94a3b8;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.btn-confirm,
.btn-reject {
    padding: 1rem 2rem;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Raleway', sans-serif;
}

.btn-confirm {
    background: linear-gradient(135deg, #06B6D4, #0891B2);
    color: #0f172a;
}

.btn-confirm:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 25px rgba(6, 182, 212, 0.5);
}

.btn-reject {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 2px solid #ef4444;
}

.btn-reject:hover {
    background: rgba(239, 68, 68, 0.3);
}

.site-footer {
    background: #1e293b;
    border-top: 2px solid #06B6D4;
    padding: 3rem 2rem 1.5rem;
}

.footer-grid {
    max-width: 1400px;
    margin: 0 auto 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-col h3 {
    color: #06B6D4;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 700;
}

.footer-col p {
    color: #94a3b8;
    line-height: 1.6;
}

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

.footer-list li {
    margin-bottom: 0.6rem;
}

.footer-list a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-list a:hover {
    color: #06B6D4;
}

.footer-bar {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(6, 182, 212, 0.3);
    color: #64748b;
}

.play-guide {
    margin-bottom: 2rem;
}

.guide-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.guide-card {
    background: rgba(6, 182, 212, 0.05);
    padding: 1.8rem;
    border-radius: 10px;
    border: 2px solid rgba(6, 182, 212, 0.3);
}

.guide-card h3 {
    color: #06B6D4;
    margin-bottom: 1rem;
    font-weight: 700;
}

.guide-card p {
    color: #94a3b8;
    line-height: 1.7;
}

.play-reminders {
    margin-top: 2rem;
    background: rgba(6, 182, 212, 0.05);
    padding: 2.5rem;
    border-radius: 15px;
    border: 2px solid rgba(6, 182, 212, 0.3);
}

.play-reminders h2 {
    text-align: center;
    color: #06B6D4;
    margin-bottom: 2rem;
    font-weight: 700;
}

.reminder-boxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.reminder-box {
    background: #1e293b;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.reminder-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.reminder-box h4 {
    color: #06B6D4;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.reminder-box p {
    color: #94a3b8;
    line-height: 1.7;
}

.legal-page {
    max-width: 1000px;
    margin: 0 auto;
}

.legal-page h1 {
    font-size: 2.8rem;
    color: #06B6D4;
    margin-bottom: 0.5rem;
    text-align: center;
    font-weight: 800;
}

.last-updated {
    text-align: center;
    color: #64748b;
    margin-bottom: 3rem;
    font-style: italic;
}

.legal-article {
    background: rgba(6, 182, 212, 0.05);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid #06B6D4;
    margin-bottom: 2rem;
}

.legal-article h2 {
    color: #06B6D4;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.legal-article p {
    color: #94a3b8;
    line-height: 1.8;
    margin-bottom: 0.8rem;
}

.critical-notice {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(8, 145, 178, 0.15));
    padding: 2rem;
    border-radius: 12px;
    border: 3px solid #06B6D4;
    margin-bottom: 2rem;
}

.critical-notice h2 {
    color: #06B6D4;
    font-size: 1.7rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.critical-notice p {
    color: #cbd5e1;
    line-height: 1.8;
    font-size: 1.05rem;
}

@media (max-width: 968px) {
    body {
        display: block;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 1rem;
    }

    .sidebar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-bottom: 0;
        border-bottom: none;
        margin-bottom: 0;
    }

    .nav-logo {
        width: 50px;
        height: 50px;
        margin-bottom: 0;
    }

    .brand-name {
        font-size: 1.5rem;
        margin-left: 1rem;
    }

    .mobile-toggle {
        display: block;
        background: #06B6D4;
        border: none;
        padding: 0.8rem 1.2rem;
        border-radius: 8px;
        color: #0f172a;
        font-size: 1.5rem;
        cursor: pointer;
        font-weight: 800;
    }

    .sidebar-menu {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .sidebar-menu.active {
        max-height: 500px;
        margin-top: 1rem;
    }

    .sidebar-footer {
        display: none;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 1.5rem;
    }

    .welcome-banner h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .game-iframe {
        height: 450px;
    }

    .modal-box {
        margin: 1rem;
        padding: 2rem;
    }

    .modal-actions {
        flex-direction: column;
    }
}