@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600&display=swap');

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

:root {
    --arc-black: #0f0f0f;
    --arc-dark: #1a1a1a;
    --arc-red: #dc2626;
    --arc-rose: #f43f5e;
    --arc-pink: #fb7185;
    --arc-white: #fafafa;
    --arc-gray: #a3a3a3;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--arc-black);
    color: var(--arc-white);
    line-height: 1.7;
}

.arc-header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: var(--arc-black);
    border-bottom: 1px solid var(--arc-dark);
}

.header-grid {
    max-width: 1800px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.brand-arc {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--arc-red), var(--arc-rose));
    clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-arc span {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 1.2rem;
    color: white;
}

.brand-name {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--arc-white);
    letter-spacing: 2px;
}

.arc-nav {
    display: flex;
    gap: 2rem;
}

.arc-nav a {
    color: var(--arc-gray);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
    padding: 0.5rem 0;
}

.arc-nav a:hover,
.arc-nav a.on {
    color: var(--arc-rose);
}

.arc-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 8px;
}

.arc-toggle span {
    width: 25px;
    height: 2px;
    background: var(--arc-rose);
    transition: 0.3s;
}

.arc-toggle.active span:first-child {
    transform: rotate(45deg) translate(6px, 6px);
}

.arc-toggle.active span:nth-child(2) {
    opacity: 0;
}

.arc-toggle.active span:last-child {
    transform: rotate(-45deg) translate(6px, -6px);
}

.arc-mobile {
    display: none;
    background: var(--arc-dark);
}

.arc-mobile.show {
    display: block;
}

.arc-mobile a {
    display: block;
    padding: 1rem 2rem;
    color: var(--arc-white);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid var(--arc-black);
}

.arc-mobile a:hover {
    background: var(--arc-red);
}

main {
    padding-top: 75px;
}

.arc-hero {
    min-height: 90vh;
    background: var(--arc-black);
    display: flex;
    align-items: center;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.arc-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 150%;
    background: linear-gradient(135deg, var(--arc-red), var(--arc-rose));
    opacity: 0.05;
    transform: rotate(-15deg);
}

.hero-grid {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    z-index: 1;
}

.hero-grid h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    color: var(--arc-white);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-grid h1 span {
    color: var(--arc-rose);
}

.hero-grid p {
    font-size: 1.1rem;
    color: var(--arc-gray);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.arc-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--arc-red);
    color: white;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s;
    clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 100%, 15px 100%);
}

.arc-btn:hover {
    background: var(--arc-rose);
    transform: translateX(5px);
}

.arc-notices {
    padding: 5rem 2rem;
    background: var(--arc-dark);
}

.notices-flex {
    max-width: 1600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.notice-block {
    background: var(--arc-black);
    padding: 2.5rem;
    border-left: 4px solid var(--arc-red);
}

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

.notice-block h3 {
    font-family: 'Montserrat', sans-serif;
    color: var(--arc-white);
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.notice-block p {
    color: var(--arc-gray);
    font-size: 0.95rem;
}

.arc-game {
    padding: 5rem 2rem;
    background: var(--arc-black);
}

.arc-game h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--arc-white);
    margin-bottom: 2rem;
}

.game-wrapper {
    max-width: 1300px;
    margin: 0 auto;
    border: 2px solid var(--arc-red);
    overflow: hidden;
}

.game-wrapper iframe {
    width: 100%;
    height: 620px;
    border: none;
    display: block;
}

.arc-features {
    padding: 5rem 2rem;
    background: linear-gradient(180deg, var(--arc-dark), var(--arc-black));
}

.features-layout {
    max-width: 1600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--arc-black);
    padding: 2rem;
    border-top: 3px solid var(--arc-rose);
}

.feature-card h3 {
    font-family: 'Montserrat', sans-serif;
    color: var(--arc-rose);
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--arc-gray);
}

.arc-footer {
    background: var(--arc-dark);
    border-top: 1px solid var(--arc-black);
    padding: 3rem 2rem;
    text-align: center;
}

.arc-footer p {
    color: var(--arc-gray);
    margin-bottom: 1.5rem;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.footer-nav a {
    color: var(--arc-rose);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-nav a:hover {
    color: var(--arc-pink);
}

.footer-copy {
    color: var(--arc-gray);
    font-size: 0.85rem;
}

.page-banner {
    padding: 7rem 2rem 3rem;
    background: var(--arc-dark);
    border-bottom: 1px solid var(--arc-black);
}

.page-banner h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--arc-white);
    max-width: 1400px;
    margin: 0 auto;
}

.arc-content {
    padding: 4rem 2rem;
    background: var(--arc-black);
}

.content-inner {
    max-width: 900px;
    margin: 0 auto;
}

.content-inner h2 {
    font-family: 'Montserrat', sans-serif;
    color: var(--arc-rose);
    margin: 2rem 0 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.content-inner p {
    color: var(--arc-gray);
    margin-bottom: 1rem;
}

.content-inner ul {
    list-style: none;
    margin: 1rem 0;
}

.content-inner li {
    color: var(--arc-gray);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.content-inner li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--arc-red);
}

.age-wall {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 15, 0.98);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.age-box {
    background: var(--arc-dark);
    border-left: 4px solid var(--arc-red);
    padding: 3rem;
    max-width: 480px;
}

.age-box h2 {
    font-family: 'Montserrat', sans-serif;
    color: var(--arc-white);
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
    font-weight: 700;
}

.age-box p {
    color: var(--arc-gray);
    margin-bottom: 2rem;
}

.age-btns {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.age-btns button {
    padding: 0.9rem 2rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: 0.3s;
    border: none;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.age-btns .confirm {
    background: var(--arc-red);
    color: white;
}

.age-btns .reject {
    background: transparent;
    border: 2px solid var(--arc-red);
    color: var(--arc-rose);
}

.age-btns button:hover {
    transform: translateX(3px);
}

.game-help {
    background: var(--arc-dark);
    border-left: 4px solid var(--arc-rose);
    padding: 1.5rem;
    margin-bottom: 2rem;
    max-width: 1300px;
    margin-left: auto;
    margin-right: auto;
}

.game-help h3 {
    font-family: 'Montserrat', sans-serif;
    color: var(--arc-white);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.game-help p {
    color: var(--arc-gray);
    font-size: 0.95rem;
}

@media (max-width: 900px) {
    .notices-flex {
        grid-template-columns: 1fr;
    }
    
    .features-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .arc-nav {
        display: none;
    }
    
    .arc-toggle {
        display: flex;
    }
    
    .game-wrapper iframe {
        height: 400px;
    }
    
    .hero-grid h1 {
        font-size: 2.2rem;
    }
}