* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Lora', serif, sans-serif; background-color: #00020a; color: #ffffff; line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
.c21kr3-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header & Nav */
.c21kr3-header-l-c-r { background: rgba(0, 2, 10, 0.85); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255, 0, 85, 0.3); padding: 15px 0; position: sticky; top: 0; z-index: 1000; }
.c21kr3-logo { font-size: 1.5rem; font-weight: 700; display: flex; align-items: center; color: #ff0055; }
.c21kr3-desktop-nav ul { display: flex; justify-content: center; gap: 30px; }
.c21kr3-desktop-nav a:hover { color: #00ffaa; text-shadow: 0 0 8px #00ffaa; }
.c21kr3-age-flag { display: flex; align-items: center; background: rgba(255,255,255,0.1); padding: 5px 12px; border-radius: 20px; font-weight: bold; border: 1px solid #ff0055; }
.c21kr3-hamburger { background: none; border: none; color: #fff; font-size: 1.8rem; cursor: pointer; display: none; }

/* Mobile Menu */
.c21kr3-mobile-menu { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: #00020a; z-index: 2000; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.c21kr3-mobile-menu ul li { margin: 20px 0; font-size: 1.5rem; }
.c21kr3-close-menu { position: absolute; top: 20px; right: 20px; font-size: 2rem; background: none; border: none; color: #ff0055; cursor: pointer; }

/* Hero Section */
.c21kr3-hero { padding: 100px 0; background: radial-gradient(circle at center, #0a0e22 0%, #00020a 100%); position: relative; overflow: hidden; }
.c21kr3-hero-split { display: flex; align-items: center; gap: 50px; flex-wrap: wrap; }
.c21kr3-hero-text { flex: 1; min-width: 300px; }
.c21kr3-hero-text h1 { font-size: 3.5rem; line-height: 1.2; margin-bottom: 20px; background: linear-gradient(to right, #ff0055, #00ffaa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.c21kr3-hero-visual { flex: 1; min-width: 300px; position: relative; }
.c21kr3-hero-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255, 0, 85, 0.4); border-radius: 20px; padding: 20px; transform: rotate(-3deg); box-shadow: 0 20px 50px rgba(0,0,0,0.5); }
.c21kr3-trust-badges { display: flex; gap: 15px; margin-top: 30px; flex-wrap: wrap; }
.c21kr3-badge { background: rgba(0, 255, 170, 0.1); border: 1px solid #00ffaa; padding: 8px 15px; border-radius: 5px; font-size: 0.9rem; color: #00ffaa; }

/* Content Blocks */
.c21kr3-section { padding: 80px 0; }
.c21kr3-section h2 { font-size: 2.5rem; margin-bottom: 30px; text-align: center; color: #ff0055; }
.c21kr3-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }
.c21kr3-card { background: #0a0e22; border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; overflow: hidden; transition: 0.3s; }
.c21kr3-card:hover { border-color: #00ffaa; transform: translateY(-10px); }
.c21kr3-card img { width: 100%; height: 200px; object-fit: cover; }
.c21kr3-card-body { padding: 20px; }
.c21kr3-btn { display: inline-block; padding: 12px 30px; background: #ff0055; color: #fff; border-radius: 30px; font-weight: bold; border: none; cursor: pointer; text-align: center; }
.c21kr3-btn:hover { background: #00ffaa; color: #000; box-shadow: 0 0 20px #00ffaa; }

/* Game Frame */
.c21kr3-game-container { background: #0a0e22; padding: 40px; border-radius: 20px; border: 2px solid #ff0055; margin-bottom: 40px; }
.c21kr3-instructions { background: rgba(255,255,255,0.03); padding: 30px; border-radius: 12px; margin-top: 20px; border-left: 4px solid #00ffaa; }

/* Footer */
.c21kr3-footer-centered { background: #00020a; padding: 60px 0 20px; border-top: 1px solid rgba(255,255,255,0.1); }
.c21kr3-footer-centered ul { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 30px; }

/* Popup */
.c21kr3-modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,2,10,0.9); backdrop-filter: blur(15px); z-index: 9999; display: flex; align-items: center; justify-content: center; padding: 20px; }
.c21kr3-modal-content { background: #0a0e22; border: 2px solid #ff0055; padding: 40px; border-radius: 20px; max-width: 500px; text-align: center; box-shadow: 0 0 50px rgba(255,0,85,0.3); }
.c21kr3-21plus { width: 80px; height: 80px; border: 4px solid #ff0055; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2rem; font-weight: bold; margin: 0 auto 20px; color: #ff0055; }

@media (max-width: 768px) {
    .c21kr3-desktop-nav { display: none; }
    .c21kr3-hamburger { display: block; }
    .c21kr3-hero-text h1 { font-size: 2.2rem; }
}