:root{--primary-color:#8A2BE2;--primary-gradient:linear-gradient(135deg,#9C7CF4,#8A2BE2);--primary-hover:#7722CC;--bg-color:#0A0A0F;--card-bg:#14141F;--text-color:#FFFFFF;--text-secondary:rgba(255,255,255,0.7);--input-bg:#1E1E2D;--border-radius:16px;--box-shadow:0 10px 30px rgba(0,0,0,0.3);--accent-color:#FF6B8B;--success-color:#4CAF50}.start-background{background-color:var(--bg-color);background-image:radial-gradient(circle at 10% 20%,rgba(138,43,226,.1) 0,transparent 20%),radial-gradient(circle at 90% 80%,rgba(138,43,226,.1) 0,transparent 20%);color:var(--text-color);font-family:Noto Sans KR,sans-serif;min-height:100dvh;line-height:1.6}#stars{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;overflow:hidden}.star{position:absolute;background-color:#fff;border-radius:50%;opacity:.6;animation:twinkle 4s ease-in-out infinite;z-index:-1}@keyframes twinkle{0%,to{opacity:.2}50%{opacity:.8}}input[type=text]{width:100%;padding:12px 18px;background-color:var(--input-bg);border:1px solid rgba(255,255,255,.1);border-radius:var(--border-radius);color:var(--text-color);font-size:16px;transition:all .3s ease;font-family:Noto Sans KR,sans-serif}input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(138,43,226,.2)}.checkbox-container{display:flex;align-items:center;margin-top:12px;cursor:pointer}.checkbox-container input[type=checkbox]{position:absolute;opacity:0;width:0;height:0}.checkbox-container .checkbox{width:22px;height:22px;border-radius:6px;border:1px solid rgba(255,255,255,.2);background-color:var(--input-bg);margin-right:10px;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0}.checkbox-container input[type=checkbox]:checked+.checkbox{background-color:var(--primary-color);border-color:var(--primary-color)}.checkbox-container input[type=checkbox]:checked+.checkbox:after{content:"";width:6px;height:10px;border:solid white;border-width:0 2px 2px 0;transform:rotate(45deg);margin-top:-2px}.checkbox-container span{font-size:15px;color:var(--text-secondary)}