:root{--bg-primary: #030014;--bg-secondary: rgba(0, 240, 255, .03);--bg-tertiary: rgba(255, 0, 60, .05);--accent-cyan: #00f0ff;--accent-pink: #ff003c;--text-main: #ffffff;--text-muted: #8b9bb4;--border-light: rgba(255, 255, 255, .1);--border-cyan: rgba(0, 240, 255, .3);--border-pink: rgba(255, 0, 60, .3);--glow-cyan: 0 0 20px rgba(0, 240, 255, .4), inset 0 0 10px rgba(0, 240, 255, .2);--glow-pink: 0 0 20px rgba(255, 0, 60, .4), inset 0 0 10px rgba(255, 0, 60, .2)}*{box-sizing:border-box}html,body{margin:0;padding:0;width:100%;min-height:100vh;overflow-x:hidden;overflow-y:auto;background-color:var(--bg-primary);color:var(--text-main);font-family:Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}.background-fx{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:0;overflow:hidden;pointer-events:none}.orb-cyan{position:absolute;width:40vw;height:40vw;background:radial-gradient(circle,#00f0ff26,#00f0ff00 70%);top:-10vh;left:-10vw;animation:float 20s ease-in-out infinite alternate}.orb-pink{position:absolute;width:50vw;height:50vw;background:radial-gradient(circle,#ff003c26,#ff003c00 70%);bottom:-20vh;right:-10vw;animation:float 25s ease-in-out infinite alternate-reverse}.landing-container{position:relative;z-index:10;width:100%;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;box-sizing:border-box}.landing-header{text-align:center;margin-bottom:4rem;animation:slideUpFade 1s cubic-bezier(.16,1,.3,1) forwards}.landing-header .logo{font-size:3.5rem;font-weight:900;letter-spacing:-.04em;margin:0 0 1rem;background:linear-gradient(to right,var(--text-main),var(--text-muted));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.landing-header .logo span{background:linear-gradient(to right,var(--accent-cyan),var(--accent-pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.landing-header p{font-size:1.25rem;color:var(--text-muted);font-weight:500;margin:0}.options-grid{display:flex;gap:3rem;max-width:1000px;width:100%;justify-content:center;flex-wrap:wrap}.option-card{flex:1;min-width:300px;max-width:450px;background:#0a0a1499;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-light);border-radius:1.5rem;padding:3rem 2.5rem;text-decoration:none;color:var(--text-main);display:flex;flex-direction:column;align-items:center;text-align:center;transition:all .4s cubic-bezier(.16,1,.3,1);position:relative;overflow:hidden;opacity:0;transform:translateY(30px);animation:slideUpFade 1s cubic-bezier(.16,1,.3,1) forwards}.option-card:nth-child(1){animation-delay:.15s}.option-card:nth-child(2){animation-delay:.3s}.card-calc{border-color:var(--border-cyan);box-shadow:inset 0 0 20px #00f0ff0d}.card-learn{border-color:var(--border-pink);box-shadow:inset 0 0 20px #ff003c0d}.card-calc:hover{transform:translateY(-10px) scale(1.02);border-color:var(--accent-cyan);box-shadow:var(--glow-cyan);background:#00f0ff0d}.card-learn:hover{transform:translateY(-10px) scale(1.02);border-color:var(--accent-pink);box-shadow:var(--glow-pink);background:#ff003c0d}.card-icon{font-size:3.5rem;margin-bottom:1.5rem;display:inline-block;transition:transform .4s ease}.card-calc:hover .card-icon{transform:scale(1.15) rotate(-5deg)}.card-learn:hover .card-icon{transform:scale(1.15) rotate(5deg)}.option-card h2{font-size:1.75rem;font-weight:700;margin:0 0 1rem;letter-spacing:-.02em}.option-card p{color:var(--text-muted);line-height:1.6;margin:0;font-size:1.05rem}@keyframes float{0%{transform:translate(0) scale(1)}50%{transform:translate(5%,5%) scale(1.1)}to{transform:translate(-5%,-5%) scale(1)}}@keyframes slideUpFade{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){.options-grid{flex-direction:column;align-items:center;gap:2rem}.landing-header{margin-bottom:3rem}.landing-header .logo{font-size:2.25rem}.landing-header p{font-size:1rem}.option-card{min-width:100%;max-width:100%;padding:2rem 1.5rem}.landing-container{padding:4rem 1rem 2rem;justify-content:flex-start}}