*{box-sizing:border-box;margin:0;padding:0}body{color:#333;background-color:#f5f5f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6}.header{z-index:100;background:#fff;border-bottom:1px solid #e0e0e0;padding:1rem 0;position:sticky;top:0}.header-container{justify-content:space-between;align-items:center;max-width:1400px;margin:0 auto;padding:0 2rem;display:flex}.logo{color:#000;letter-spacing:-.02em;font-size:1.5rem;font-weight:800}.nav{align-items:center;gap:2rem;display:flex}.nav a{color:#333;font-size:.95rem;font-weight:500;text-decoration:none;transition:color .2s}.nav a:hover{color:#000}.icon-btn{cursor:pointer;background:0 0;border:1px solid #e0e0e0;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;transition:border-color .2s;display:flex}.icon-btn:hover{border-color:#000}.hero{text-align:center;background:linear-gradient(135deg,#f5f5f5 0%,#fafafa 100%);padding:4rem 2rem}.hero-content{max-width:800px;margin:0 auto}.hero-title{color:#000;margin-bottom:1rem;font-size:3rem;font-weight:700;line-height:1.2}.hero-subtitle{color:#666;margin-bottom:2rem;font-size:1.25rem;font-weight:400}.hero-cta{gap:1rem;max-width:500px;margin:0 auto;display:flex}.email-input{border:2px solid #ddd;border-radius:12px;flex:1;padding:.875rem 1.25rem;font-size:1rem;transition:border-color .2s,box-shadow .2s}.email-input:focus{border-color:#000;outline:none;box-shadow:0 0 0 3px #0000001a}.cta-button{color:#fff;cursor:pointer;background:#000;border:none;border-radius:12px;padding:.875rem 2rem;font-size:1rem;font-weight:600;transition:background-color .2s,transform .1s}.cta-button:hover{background:#1a1a1a}.cta-button:active{transform:scale(.98)}.display-section{background:linear-gradient(135deg,#fafafa 0%,#f5f5f5 100%);justify-content:center;align-items:center;min-height:600px;padding:4rem 2rem;display:flex}.split-flap-container{perspective:1000px;width:100%;max-width:1200px}.flap-display{background:#1a1a1a;border-radius:16px;padding:2rem;position:relative;box-shadow:0 20px 60px #0000004d}.flap-grid{grid-template-columns:repeat(auto-fit,minmax(45px,1fr));gap:8px;margin-bottom:0;display:grid;position:relative}.accent-indicators{pointer-events:none;border-radius:16px;width:100%;height:100%;position:absolute;top:0;left:0;overflow:hidden}.accent-left,.accent-right{border-radius:2px;width:12px;height:60px;transition:background-color .6s;position:absolute;top:2rem}.accent-left{left:1.5rem}.accent-right{right:1.5rem}.flap-tile{aspect-ratio:1;color:#fff;perspective:1000px;background:#2a2a2a;border:1px solid #404040;border-radius:4px;justify-content:center;align-items:center;min-height:50px;font-family:Courier New,monospace;font-size:1.75rem;font-weight:700;display:flex;position:relative;overflow:hidden}.flap-tile:after{content:"";z-index:2;background:#0000004d;width:100%;height:1px;position:absolute;top:50%;left:0}.flap-char{z-index:1;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}@keyframes flip{0%{transform:rotateX(0)}50%{transform:rotateX(90deg)}to{transform:rotateX(0)}}.flap-tile.flipping .flap-char{transform-style:preserve-3d;animation:.5s ease-in-out flip}.attribution-row{opacity:.8;margin-top:1rem;font-size:.9rem}@media (width<=768px){.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}.hero-cta{flex-direction:column}.flap-tile{min-height:40px;font-size:1.25rem}.flap-display{padding:1rem}.flap-grid{gap:6px}}