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

body {
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(135deg, #2d0a0a, #5a0000, #8B0000);
    color: #ffffff;
    line-height: 1.6;
}

/* Age Overlay */
.age-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.97);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999;
}

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

.age-dialog {
    background: linear-gradient(135deg, #5a0000, #8B0000);
    border-radius: 25px;
    max-width: 600px;
    border: 4px solid #C0C0C0;
    box-shadow: 0 0 60px rgba(192, 192, 192, 0.4);
}

.age-header {
    padding: 40px 40px 20px;
    text-align: center;
    border-bottom: 2px solid rgba(192, 192, 192, 0.3);
}

.age-icon-box {
    font-size: 70px;
    margin-bottom: 20px;
}

.age-dialog h2 {
    font-size: 38px;
    color: #C0C0C0;
    font-weight: 800;
}

.age-body {
    padding: 30px 40px;
    text-align: center;
}

.age-body p {
    font-size: 19px;
    margin-bottom: 15px;
    line-height: 1.8;
}

.age-footer {
    padding: 20px 40px 40px;
    display: flex;
    gap: 20px;
    justify-content: center;
}

.age-button {
    padding: 18px 45px;
    font-size: 18px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.age-button.primary {
    background: #C0C0C0;
    color: #2d0a0a;
}

.age-button.primary:hover {
    background: #A9A9A9;
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(192, 192, 192, 0.4);
}

.age-button.secondary {
    background: #444;
    color: #fff;
}

.age-button.secondary:hover {
    background: #333;
}

/* Page Container */
.page-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.top-header {
    background: rgba(45, 10, 10, 0.95);
    border-bottom: 4px solid #C0C0C0;
    position: sticky;
    top: 0;
    z-index: 9999;
}

.header-wrap {
    max-width: 1500px;
    margin: 0 auto;
    padding: 25px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-identity {
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand-identity h1 {
    font-size: 36px;
    font-weight: 800;
    color: #C0C0C0;
}

.primary-navigation {
    display: flex;
    gap: 35px;
}

.menu-item {
    color: #ffffff;
    text-decoration: none;
    font-size: 19px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.menu-item:hover {
    background: rgba(192, 192, 192, 0.2);
    color: #C0C0C0;
}

.menu-item.current {
    background: rgba(192, 192, 192, 0.3);
    color: #C0C0C0;
}

/* Nav Trigger */
.nav-trigger {
    display: none;
    flex-direction: column;
    gap: 7px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.trigger-line {
    width: 32px;
    height: 4px;
    background: #C0C0C0;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-trigger.active .trigger-line:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.nav-trigger.active .trigger-line:nth-child(2) {
    opacity: 0;
}

.nav-trigger.active .trigger-line:nth-child(3) {
    transform: rotate(-45deg) translate(10px, -10px);
}

.mobile-drawer {
    display: none;
    background: rgba(45, 10, 10, 0.98);
    position: fixed;
    top: 110px;
    left: 0;
    right: 0;
    padding: 25px;
    z-index: 9998;
    border-bottom: 4px solid #C0C0C0;
}

.mobile-drawer.active {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.drawer-link {
    color: #ffffff;
    text-decoration: none;
    font-size: 21px;
    font-weight: 600;
    padding: 18px 25px;
    background: rgba(192, 192, 192, 0.2);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.drawer-link:hover {
    background: rgba(192, 192, 192, 0.3);
    color: #C0C0C0;
}

/* Main Area */
.main-area {
    flex: 1;
}

/* Hero Zone */
.hero-zone {
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.2), rgba(139, 0, 0, 0.4));
    padding: 120px 40px;
    text-align: center;
}

.hero-content-wrap {
    max-width: 1200px;
    margin: 0 auto;
}

.hero-text h2 {
    font-size: 58px;
    font-weight: 800;
    margin-bottom: 25px;
    color: #C0C0C0;
    text-shadow: 0 0 25px rgba(192, 192, 192, 0.5);
}

.hero-desc {
    font-size: 28px;
    margin-bottom: 40px;
    color: #ffffff;
}

.hero-cta {
    display: inline-block;
    padding: 22px 55px;
    background: #C0C0C0;
    color: #2d0a0a;
    text-decoration: none;
    font-size: 24px;
    font-weight: 800;
    border-radius: 14px;
    transition: all 0.3s ease;
}

.hero-cta:hover {
    background: #A9A9A9;
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(192, 192, 192, 0.4);
}

/* Section Container */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Intro Zone */
.intro-zone {
    padding: 80px 0;
}

.intro-split {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 50px;
    align-items: center;
}

.intro-left h3 {
    font-size: 40px;
    margin-bottom: 25px;
    color: #C0C0C0;
    font-weight: 800;
}

.intro-left p {
    font-size: 18px;
    margin-bottom: 22px;
    line-height: 1.9;
}

.highlight-box {
    background: rgba(192, 192, 192, 0.15);
    padding: 40px;
    border-radius: 18px;
    border: 3px solid #C0C0C0;
}

.highlight-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 25px;
}

.stat-fig {
    font-size: 46px;
    font-weight: 800;
    color: #C0C0C0;
    margin-bottom: 12px;
}

.stat-text {
    font-size: 18px;
    color: #ffffff;
}

/* Essential Notices */
.essential-notices {
    padding: 80px 0;
    background: rgba(0, 0, 0, 0.3);
}

.notices-title {
    text-align: center;
    font-size: 44px;
    margin-bottom: 50px;
    color: #C0C0C0;
    font-weight: 800;
}

.notices-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 35px;
}

.notice-box {
    padding: 45px;
    border-radius: 18px;
    border: 4px solid;
    transition: all 0.3s ease;
}

.notice-box.alert {
    background: rgba(220, 53, 69, 0.2);
    border-color: #dc3545;
}

.notice-box.info {
    background: rgba(13, 202, 240, 0.2);
    border-color: #0dcaf0;
}

.notice-box.warning {
    background: rgba(255, 193, 7, 0.2);
    border-color: #ffc107;
}

.notice-box:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(192, 192, 192, 0.3);
}

.notice-symbol {
    font-size: 58px;
    display: block;
    margin-bottom: 22px;
}

.notice-box h4 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #C0C0C0;
    font-weight: 800;
}

.notice-box p {
    font-size: 17px;
    line-height: 1.9;
}

/* Game Showcase */
.game-showcase {
    padding: 80px 0;
}

.showcase-header {
    text-align: center;
    margin-bottom: 45px;
}

.showcase-header h3 {
    font-size: 44px;
    margin-bottom: 20px;
    color: #C0C0C0;
    font-weight: 800;
}

.showcase-header p {
    font-size: 19px;
    color: #e0e0e0;
    max-width: 1000px;
    margin: 0 auto;
}

.game-display {
    margin-bottom: 35px;
}

.game-frame-wrap {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    border-radius: 18px;
    overflow: hidden;
    border: 5px solid #C0C0C0;
    box-shadow: 0 0 50px rgba(192, 192, 192, 0.4);
}

.game-frame-wrap iframe {
    width: 100%;
    height: 720px;
    display: block;
}

.game-annotations {
    display: flex;
    justify-content: center;
    gap: 45px;
    flex-wrap: wrap;
}

.annotation {
    font-size: 20px;
    font-weight: 600;
    color: #C0C0C0;
}

/* Philosophy Section */
.philosophy-section {
    padding: 80px 0;
    background: rgba(0, 0, 0, 0.3);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 50px;
}

.philosophy-content h3 {
    font-size: 40px;
    margin-bottom: 25px;
    color: #C0C0C0;
    font-weight: 800;
}

.philosophy-content p {
    font-size: 18px;
    margin-bottom: 22px;
    line-height: 1.9;
}

.principle-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.principle {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: rgba(192, 192, 192, 0.1);
    padding: 25px;
    border-radius: 14px;
    border: 2px solid rgba(192, 192, 192, 0.3);
}

.principle-icon {
    font-size: 42px;
}

.principle-text strong {
    display: block;
    font-size: 20px;
    color: #C0C0C0;
    margin-bottom: 8px;
}

.principle-text p {
    font-size: 15px;
    line-height: 1.7;
}

/* Responsibility Zone */
.responsibility-zone {
    padding: 80px 0;
}

.zone-title {
    text-align: center;
    font-size: 44px;
    margin-bottom: 25px;
    color: #C0C0C0;
    font-weight: 800;
}

.zone-intro {
    text-align: center;
    font-size: 19px;
    margin-bottom: 50px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.responsibility-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.resp-card {
    background: rgba(192, 192, 192, 0.1);
    padding: 35px;
    border-radius: 16px;
    border: 3px solid rgba(192, 192, 192, 0.4);
}

.card-num {
    font-size: 58px;
    font-weight: 800;
    color: #C0C0C0;
    margin-bottom: 18px;
}

.resp-card h4 {
    font-size: 24px;
    margin-bottom: 16px;
    color: #C0C0C0;
    font-weight: 800;
}

.resp-card p {
    font-size: 16px;
    line-height: 1.8;
}

/* Play Page */
.play-intro-section {
    padding: 70px 0 40px;
    text-align: center;
}

.play-intro-section h2 {
    font-size: 50px;
    margin-bottom: 22px;
    color: #C0C0C0;
    font-weight: 800;
}

.play-subtitle {
    font-size: 21px;
    color: #e0e0e0;
    max-width: 1000px;
    margin: 0 auto;
}

.gameplay-guide {
    padding: 50px 0;
}

.guide-wrapper {
    background: rgba(192, 192, 192, 0.1);
    padding: 50px;
    border-radius: 20px;
    border: 4px solid #C0C0C0;
}

.guide-wrapper h3 {
    font-size: 38px;
    margin-bottom: 35px;
    color: #C0C0C0;
    font-weight: 800;
}

.steps-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 28px;
    margin-bottom: 35px;
}

.gameplay-step {
    background: rgba(139, 0, 0, 0.3);
    padding: 30px;
    border-radius: 14px;
    border: 2px solid rgba(192, 192, 192, 0.3);
}

.step-marker {
    width: 60px;
    height: 60px;
    background: #C0C0C0;
    color: #2d0a0a;
    font-size: 32px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-bottom: 18px;
}

.gameplay-step h4 {
    font-size: 22px;
    margin-bottom: 14px;
    color: #C0C0C0;
    font-weight: 800;
}

.gameplay-step p {
    font-size: 16px;
    line-height: 1.8;
}

.technical-note {
    background: rgba(255, 193, 7, 0.15);
    padding: 22px;
    border-radius: 12px;
    border-left: 5px solid #ffc107;
}

.main-play-area {
    padding: 50px 0;
}

.fullwidth-game {
    width: 100%;
    border-radius: 18px;
    overflow: hidden;
    border: 5px solid #C0C0C0;
    box-shadow: 0 0 50px rgba(192, 192, 192, 0.4);
}

.fullwidth-game iframe {
    width: 100%;
    height: 820px;
    display: block;
}

.play-disclaimer {
    padding: 50px 0;
}

.disclaimer-panel {
    background: rgba(220, 53, 69, 0.2);
    padding: 40px;
    border-radius: 16px;
    border: 4px solid #dc3545;
    text-align: center;
}

.disclaimer-panel h3 {
    font-size: 32px;
    margin-bottom: 22px;
    color: #C0C0C0;
    font-weight: 800;
}

.disclaimer-panel p {
    font-size: 18px;
    line-height: 1.9;
}

/* Legal Pages */
.legal-page {
    padding: 60px 0;
}

.legal-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 40px;
}

.legal-container h2 {
    font-size: 50px;
    text-align: center;
    margin-bottom: 18px;
    color: #C0C0C0;
    font-weight: 800;
}

.doc-date {
    text-align: center;
    font-size: 17px;
    color: #cccccc;
    margin-bottom: 55px;
}

.legal-block {
    background: rgba(192, 192, 192, 0.08);
    padding: 38px;
    border-radius: 16px;
    margin-bottom: 35px;
    border: 3px solid rgba(192, 192, 192, 0.3);
}

.legal-block h3 {
    font-size: 32px;
    margin-bottom: 22px;
    color: #C0C0C0;
    font-weight: 800;
}

.legal-block p {
    font-size: 17px;
    margin-bottom: 18px;
    line-height: 1.9;
}

.legal-block ul {
    margin: 22px 0;
    padding-left: 38px;
}

.legal-block li {
    font-size: 17px;
    margin-bottom: 14px;
    line-height: 1.8;
}

.alert-notice {
    background: rgba(220, 53, 69, 0.25);
    padding: 45px;
    border-radius: 18px;
    border: 4px solid #dc3545;
    margin-bottom: 55px;
    text-align: center;
}

.alert-notice h3 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #C0C0C0;
    font-weight: 800;
}

.alert-notice p {
    font-size: 19px;
    line-height: 1.9;
}

/* Footer */
.page-footer {
    background: rgba(45, 10, 10, 0.9);
    padding: 55px 0 28px;
    margin-top: 90px;
    border-top: 5px solid #C0C0C0;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.footer-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 45px;
    margin-bottom: 35px;
}

.footer-sections h4 {
    font-size: 26px;
    margin-bottom: 22px;
    color: #C0C0C0;
    font-weight: 800;
}

.footer-about p,
.footer-links a,
.footer-resources a {
    font-size: 16px;
    line-height: 1.8;
}

.footer-about p {
    color: #e0e0e0;
}

.footer-links a,
.footer-resources a {
    display: block;
    color: #ffffff;
    text-decoration: none;
    margin-bottom: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover,
.footer-resources a:hover {
    color: #C0C0C0;
}

.footer-copyright {
    text-align: center;
    padding-top: 28px;
    border-top: 3px solid rgba(192, 192, 192, 0.3);
}

.footer-copyright p {
    font-size: 16px;
    color: #cccccc;
}

/* Responsive */
@media (max-width: 1024px) {
    .intro-split,
    .philosophy-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .primary-navigation {
        display: none;
    }
    
    .nav-trigger {
        display: flex;
    }
    
    .hero-text h2 {
        font-size: 40px;
    }
    
    .hero-desc {
        font-size: 22px;
    }
    
    .game-frame-wrap iframe,
    .fullwidth-game iframe {
        height: 520px;
    }
    
    .notices-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .age-dialog {
        margin: 20px;
    }
    
    .age-footer {
        flex-direction: column;
    }
    
    .hero-text h2 {
        font-size: 32px;
    }
    
    .game-frame-wrap iframe,
    .fullwidth-game iframe {
        height: 420px;
    }
    
    .game-annotations {
        flex-direction: column;
        gap: 20px;
    }
}