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

body {
    font-family: 'Inter', sans-serif;
    background: #f8f9fa;
    color: #2c3e50;
    line-height: 1.7;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 25px;
}

.site-nav {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-symbol {
    font-size: 2rem;
}

.brand-text {
    font-size: 1.6rem;
    font-weight: 700;
    color: #16a085;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 26px;
    height: 3px;
    background: #16a085;
    transition: 0.3s;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: #16a085;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: #16a085;
}

.verify-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

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

.verify-box {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    max-width: 500px;
    margin: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.verify-box h2 {
    color: #16a085;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.verify-box p {
    margin-bottom: 1rem;
    font-size: 1.05rem;
    color: #2c3e50;
}

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

.verify-btn {
    padding: 0.9rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    transition: transform 0.2s, box-shadow 0.2s;
}

.verify-confirm {
    background: #16a085;
    color: white;
}

.verify-confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(22, 160, 133, 0.3);
}

.verify-decline {
    background: #e74c3c;
    color: white;
}

.verify-decline:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(231, 76, 60, 0.3);
}

.hero-area {
    padding: 5rem 0;
    background: linear-gradient(135deg, #16a085 0%, #1abc9c 100%);
    color: white;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-area h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-lead {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.hero-secondary {
    font-size: 1rem;
    opacity: 0.9;
}

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

.visual-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 10px;
}

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

.visual-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.visual-card p {
    opacity: 0.9;
}

.key-points {
    padding: 4rem 0;
    background: white;
}

.key-points h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.points-wrapper {
    display: grid;
    gap: 2rem;
}

.point-item {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid #16a085;
}

.point-label {
    font-size: 1.3rem;
    font-weight: 700;
    color: #16a085;
    margin-bottom: 1rem;
}

.game-display {
    padding: 4rem 0;
    background: #f8f9fa;
}

.game-display h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 3rem;
    color: #7f8c8d;
}

.game-container {
    background: #000;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.game-note {
    text-align: center;
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    border: 1px solid #e1e8ed;
}

.platform-benefits {
    padding: 4rem 0;
    background: white;
}

.platform-benefits h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

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

.benefit-box {
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.benefit-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.benefit-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.benefit-icon {
    font-size: 2rem;
}

.benefit-box h3 {
    font-size: 1.3rem;
    color: #2c3e50;
}

.about-platform {
    padding: 4rem 0;
    background: #f8f9fa;
}

.about-platform h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.about-text p {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.page-intro {
    background: linear-gradient(135deg, #16a085 0%, #1abc9c 100%);
    padding: 3rem 0;
    text-align: center;
    color: white;
}

.page-intro h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.play-area {
    padding: 3rem 0;
    background: white;
}

.game-container-main {
    background: #000;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.play-guidelines {
    padding: 3rem 0;
    background: #f8f9fa;
}

.play-guidelines h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.guidelines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.guideline-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    border-top: 3px solid #16a085;
}

.guideline-card h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.document-page {
    padding: 3rem 0;
    background: white;
    min-height: 70vh;
}

.document-page h1 {
    font-size: 3rem;
    color: #16a085;
    margin-bottom: 1rem;
}

.document-date {
    font-style: italic;
    color: #7f8c8d;
    margin-bottom: 2rem;
}

.document-page h2 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.document-page p,
.document-page li {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.document-page ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.emphasis-block {
    background: #ecf0f1;
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid #16a085;
    margin: 2rem 0;
}

.emphasis-block h2 {
    margin-top: 0;
}

.site-footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    color: #16a085;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.footer-resources {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.footer-resources a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-resources a:hover {
    color: #16a085;
}

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

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a::after {
        display: none;
    }

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

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

    .verify-box {
        padding: 2rem;
    }

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

    .benefits-layout,
    .guidelines-grid {
        grid-template-columns: 1fr;
    }

    .game-iframe,
    .game-iframe-main {
        height: 400px;
    }

    .page-intro h1 {
        font-size: 2.2rem;
    }
}