:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}.app{min-height:100vh;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;transition:all .3s ease}.app.dark{background:linear-gradient(135deg,#1a1a2e,#16213e)}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 3rem}.navbar .logo{font-size:1.5rem;font-weight:700}.theme-toggle{background:#fff3;border:none;padding:.5rem 1rem;border-radius:20px;cursor:pointer;font-size:1.2rem;transition:transform .2s}.theme-toggle:hover{transform:scale(1.1)}.hero{text-align:center;padding:6rem 2rem}.hero h1{font-size:3.5rem;margin-bottom:1rem;animation:fadeInUp .8s ease}.hero p{font-size:1.3rem;opacity:.9;margin-bottom:2rem;animation:fadeInUp .8s ease .2s both}.cta-button{background:#fff;color:#667eea;border:none;padding:1rem 2.5rem;font-size:1.1rem;border-radius:30px;cursor:pointer;font-weight:700;transition:all .3s ease;animation:fadeInUp .8s ease .4s both}.cta-button:hover{transform:translateY(-3px);box-shadow:0 10px 30px #0003}.features{display:flex;justify-content:center;gap:2rem;padding:4rem 2rem;flex-wrap:wrap}.feature-card{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:2rem;border-radius:15px;text-align:center;width:280px;transition:transform .3s ease}.feature-card:hover{transform:translateY(-10px)}.feature-card .icon{font-size:3rem;display:block;margin-bottom:1rem}.feature-card h3{font-size:1.3rem;margin-bottom:.5rem}.feature-card p{opacity:.8;font-size:.95rem}.footer{text-align:center;padding:2rem;opacity:.7;margin-top:auto}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.hero h1{font-size:2.5rem}.features{flex-direction:column;align-items:center}}