:root{--neon-cyan: #00f3ff;--cyber-black: #0a0a0f;--cyber-black-light: #1a1a2e;--silver: #8892b0;--white: #e6f1ff;--glass-border: rgba(255, 255, 255, .1);--holographic-1: #764ba2;--holographic-2: #667eea;--font-main: "Noto Sans KR", sans-serif;--font-display: "Orbitron", sans-serif;--duration-base: .3s}body{margin:0;background-color:var(--cyber-black);color:var(--white);font-family:var(--font-main);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior-y:none}*{box-sizing:border-box}.neon-text{color:var(--neon-cyan);text-shadow:0 0 10px rgba(0,243,255,.5)}.glow{text-shadow:0 0 5px var(--neon-cyan),0 0 10px var(--neon-cyan),0 0 20px var(--neon-cyan)}button{font-family:var(--font-main);outline:none}.btn-cyber-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;border:1px solid var(--neon-cyan);border-radius:9999px;color:var(--neon-cyan);font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.25,.46,.45,.94);text-decoration:none;box-shadow:0 0 5px #00f3ff1a}.btn-cyber-ghost:hover:not(:disabled){background:var(--neon-cyan);color:var(--cyber-black);box-shadow:0 0 20px #00f3ff99;transform:scale(1.02)}.btn-cyber-filled{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--neon-cyan);border:2px solid var(--neon-cyan);border-radius:9999px;color:var(--cyber-black);font-weight:800;cursor:pointer;transition:all .3s cubic-bezier(.25,.46,.45,.94);text-decoration:none;box-shadow:0 0 20px #00f3ff66}.btn-cyber-filled:hover:not(:disabled){background:#fff;border-color:#fff;color:var(--cyber-black);box-shadow:0 0 30px #00f3ffcc;transform:scale(1.05)}.btn-cyber-ghost:disabled,.btn-cyber-filled:disabled{opacity:.5;cursor:not-allowed;filter:grayscale(100%)}.btn-cyber-ghost.large,.btn-cyber-filled.large{font-size:1.3rem;padding:16px 40px;border-width:2px}.btn-cyber-ghost.medium{font-size:1rem;padding:10px 20px;border-width:1px}.btn-cyber-ghost.small{font-size:.9rem;padding:6px 12px;border-width:1px}.btn-cyber-ghost.small-menu{font-size:.9rem;padding:8px 16px;border-width:1px}.btn-icon{width:44px;height:44px;border-radius:50%;border:1px solid rgba(0,243,255,.3);background:#00f3ff0d;color:var(--neon-cyan);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease;font-size:1.2rem}.btn-icon:hover{background:var(--neon-cyan);color:var(--cyber-black);box-shadow:0 0 15px #00f3ff66;transform:rotate(90deg)}.btn-icon.back:hover{transform:translate(-5px)}@keyframes pulse{0%{box-shadow:0 0 #00f3ff66}70%{box-shadow:0 0 0 10px #00f3ff00}to{box-shadow:0 0 #00f3ff00}}.pulse{animation:pulse 2s infinite}.float{animation:float 6s ease-in-out infinite}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-20px)}to{transform:translateY(0)}}.fade-in{animation:fadeIn .5s ease-out forwards;opacity:0}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.glass{background:#ffffff08;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--glass-border);border-radius:16px}.glass-card{background:#0a0a0f99;border:1px solid rgba(0,243,255,.1);border-radius:16px;transition:all .3s ease}.glass-card:hover{border-color:var(--neon-cyan);box-shadow:0 0 15px #00f3ff1a;transform:translateY(-2px)}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--neon-cyan);border:2px solid var(--neon-cyan);border-radius:9999px;color:var(--cyber-black);font-weight:800;cursor:pointer;transition:all .3s cubic-bezier(.25,.46,.45,.94);text-decoration:none;box-shadow:0 0 20px #00f3ff66;padding:16px 40px;font-size:1.3rem}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;border:1px solid var(--neon-cyan);border-radius:9999px;color:var(--neon-cyan);font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.25,.46,.45,.94);text-decoration:none;box-shadow:0 0 5px #00f3ff1a;padding:10px 20px;font-size:1rem}.flip-card-container{perspective:1000px}.flip-card{position:relative;width:100%;height:100%;text-align:center;transition:transform .8s cubic-bezier(.175,.885,.32,1.275);transform-style:preserve-3d;cursor:pointer}.flip-card.flipped{transform:rotateY(180deg)}.flip-card-front,.flip-card-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center}.flip-card-back{background:#ffffff0d;border:1px solid rgba(255,255,255,.1)}.flip-card-front{background:#0a0a0fe6;border:1px solid var(--neon-cyan);transform:rotateY(180deg);box-shadow:0 0 20px #00f3ff33}.float-card{animation:floatCard 3s ease-in-out infinite}@keyframes floatCard{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.toast-slide{animation:slideUp .3s ease-out forwards}@keyframes slideUp{0%{transform:translate(-50%,100%);opacity:0}to{transform:translate(-50%);opacity:1}}