@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700&family=Crimson+Pro:wght@400;500;600&display=swap');

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

:root {
    --deep-space: #0d1117;
    --nebula: #161b22;
    --stardust: #21262d;
    --aurora: #58a6ff;
    --nova: #f778ba;
    --starlight: #c9d1d9;
    --moonlight: #8b949e;
}

body { font-family: 'Sora', sans-serif; background: var(--deep-space); color: var(--starlight); line-height: 1.75; }
.container { max-width: 1340px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header { background: rgba(13, 17, 23, 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--stardust); position: fixed; top: 0; width: 100%; z-index: 1000; padding: 15px 0; }
.header-wrap { display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: 'Crimson Pro', serif; font-size: 2rem; font-weight: 600; color: var(--aurora); text-decoration: none; display: flex; align-items: center; gap: 12px; }
.logo-badge { width: 42px; height: 42px; background: linear-gradient(135deg, var(--aurora), var(--nova)); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.burger span { width: 26px; height: 2px; background: var(--aurora); transition: 0.3s; }
.burger.active span:first-child { transform: rotate(45deg) translate(5px, 5px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:last-child { transform: rotate(-45deg) translate(5px, -5px); }
.nav ul { display: flex; list-style: none; gap: 36px; }
.nav a { font-size: 0.95rem; color: var(--moonlight); text-decoration: none; transition: color 0.3s; }
.nav a:hover, .nav a.active { color: var(--aurora); }

/* Hero */
.hero { padding: 135px 0 80px; text-align: center; background: radial-gradient(ellipse at center top, var(--nebula) 0%, var(--deep-space) 70%); }
.hero-label { display: inline-block; padding: 10px 26px; background: var(--stardust); border: 1px solid var(--aurora); border-radius: 50px; font-size: 0.9rem; color: var(--aurora); margin-bottom: 30px; }
h1 { font-family: 'Crimson Pro', serif; font-size: 3.8rem; font-weight: 600; line-height: 1.15; margin-bottom: 22px; }
.hero-text { font-size: 1.1rem; color: var(--moonlight); max-width: 720px; margin: 0 auto; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 60px 0; }
.card { background: var(--nebula); border: 1px solid var(--stardust); border-radius: 18px; padding: 36px 28px; text-align: center; transition: border-color 0.3s, transform 0.3s; }
.card:hover { border-color: var(--nova); transform: translateY(-5px); }
.card-icon { font-size: 2.6rem; margin-bottom: 16px; }
.card h3 { font-family: 'Crimson Pro', serif; font-size: 1.3rem; color: var(--nova); margin-bottom: 12px; }
.card p { font-size: 0.95rem; color: var(--moonlight); }

/* Game */
.game-area { padding: 55px 0 75px; }
.section-head { text-align: center; margin-bottom: 42px; }
h2 { font-family: 'Crimson Pro', serif; font-size: 2.7rem; margin-bottom: 14px; }
.section-sub { color: var(--moonlight); max-width: 600px; margin: 0 auto; }
.game-container { background: var(--nebula); border: 1px solid var(--stardust); border-radius: 22px; padding: 24px; }
.game-frame { width: 100%; height: 560px; border: none; border-radius: 14px; }

/* Features */
.features { padding: 70px 0; background: var(--nebula); }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature { background: var(--deep-space); border: 1px solid var(--stardust); border-radius: 18px; padding: 36px 24px; text-align: center; }
.feature-icon { font-size: 2.8rem; margin-bottom: 16px; }
.feature h3 { font-size: 1rem; color: var(--aurora); margin-bottom: 10px; }
.feature p { font-size: 0.9rem; color: var(--moonlight); }

/* Content */
.content { padding: 60px 0; }
.content-box { background: var(--nebula); border: 1px solid var(--stardust); border-radius: 22px; padding: 52px; margin-bottom: 28px; }
.content-box h2 { text-align: left; font-size: 2.1rem; margin-bottom: 20px; }
.content-box p { color: var(--moonlight); margin-bottom: 18px; }
.content-box ul { list-style: none; margin: 24px 0; }
.content-box li { padding: 14px 0 14px 32px; position: relative; color: var(--moonlight); border-bottom: 1px solid var(--stardust); }
.content-box li:last-child { border-bottom: none; }
.content-box li::before { content: '☆'; position: absolute; left: 0; color: var(--nova); }

/* Page Header */
.page-head { padding: 125px 0 52px; text-align: center; background: var(--nebula); border-bottom: 1px solid var(--stardust); }
.page-head h1 { font-size: 3rem; }

/* Footer */
.footer { background: var(--nebula); border-top: 1px solid var(--stardust); padding: 55px 0 30px; margin-top: 70px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 52px; margin-bottom: 42px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--moonlight); font-size: 0.95rem; }
.footer-nav h4, .footer-help h4 { font-family: 'Crimson Pro', serif; font-size: 1.15rem; margin-bottom: 18px; }
.footer-nav ul { list-style: none; }
.footer-nav li { margin-bottom: 12px; }
.footer-nav a, .footer-help a { color: var(--moonlight); text-decoration: none; font-size: 0.95rem; transition: color 0.3s; }
.footer-nav a:hover, .footer-help a:hover { color: var(--aurora); }
.help-links { display: flex; flex-direction: column; gap: 10px; }
.footer-bottom { text-align: center; padding-top: 32px; border-top: 1px solid var(--stardust); font-size: 0.85rem; color: var(--moonlight); }

/* Age Modal */
.age-modal { position: fixed; inset: 0; background: rgba(13, 17, 23, 0.98); z-index: 10000; display: flex; align-items: center; justify-content: center; }
.age-modal.hidden { display: none; }
.modal-box { background: var(--nebula); border: 2px solid var(--aurora); border-radius: 24px; padding: 52px 46px; text-align: center; max-width: 490px; }
.modal-box h2 { font-family: 'Crimson Pro', serif; font-size: 1.9rem; margin-bottom: 18px; }
.modal-box p { color: var(--moonlight); margin-bottom: 32px; }
.modal-btns { display: flex; gap: 16px; justify-content: center; }
.btn-yes, .btn-no { padding: 15px 42px; font-size: 1rem; border: none; border-radius: 12px; cursor: pointer; transition: all 0.3s; }
.btn-yes { background: linear-gradient(135deg, var(--aurora), var(--nova)); color: white; }
.btn-yes:hover { transform: scale(1.05); box-shadow: 0 8px 28px rgba(88, 166, 255, 0.4); }
.btn-no { background: transparent; border: 1px solid var(--moonlight); color: var(--moonlight); }
.btn-no:hover { border-color: var(--aurora); color: var(--aurora); }
.modal-note { font-size: 0.8rem; color: var(--moonlight); margin-top: 26px; }

/* Responsive */
@media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2, 1fr); } .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 768px) {
    .burger { display: flex; }
    .nav { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background: var(--deep-space); display: flex; align-items: center; justify-content: center; transform: translateX(-100%); transition: transform 0.4s; z-index: 999; }
    .nav.open { transform: translateX(0); }
    .nav ul { flex-direction: column; text-align: center; gap: 28px; }
    .nav a { font-size: 1.3rem; }
    h1 { font-size: 2.5rem; } h2 { font-size: 2rem; }
    .cards { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .game-frame { height: 380px; }
    .content-box { padding: 36px 26px; }
    .modal-box { margin: 20px; padding: 42px 28px; }
    .modal-btns { flex-direction: column; }
}