*{margin:0;padding:0;box-sizing:border-box}.app{min-height:100vh;position:relative;overflow:hidden;background:linear-gradient(135deg,#667eea,#764ba2);font-family:Inter,Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.background-animation{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0}.floating-shapes{position:relative;width:100%;height:100%}.shape{position:absolute;border-radius:50%;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:float 6s ease-in-out infinite}.shape-1{width:80px;height:80px;top:10%;left:10%;animation-delay:0s}.shape-2{width:120px;height:120px;top:20%;right:15%;animation-delay:1s}.shape-3{width:60px;height:60px;bottom:30%;left:20%;animation-delay:2s}.shape-4{width:100px;height:100px;bottom:20%;right:20%;animation-delay:3s}.shape-5{width:70px;height:70px;top:50%;left:50%;animation-delay:4s}@keyframes float{0%,to{transform:translateY(0) rotate(0)}33%{transform:translateY(-20px) 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rgba(255,255,255,.2)}.hello-world-section{margin-bottom:3rem}.main-title{font-size:clamp(3rem,8vw,6rem);font-weight:800;margin-bottom:1rem;line-height:1.1;display:flex;flex-direction:column;gap:.5rem}.gradient-text{background:linear-gradient(135deg,#ff6b6b,#ffd93d,#6bcf7f,#4d9de0,#e15554);background-size:300% 300%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:gradientShift 3s ease-in-out infinite}.world-text{color:#fff;text-shadow:0 0 30px rgba(255,255,255,.5)}@keyframes gradientShift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.subtitle-container{position:relative;display:inline-block}.subtitle{font-size:1.3rem;color:#ffffffe6;margin-bottom:2rem;font-weight:300;letter-spacing:.5px}.pulse-dot{position:absolute;right:-30px;top:50%;transform:translateY(-50%);width:8px;height:8px;background:#4ade80;border-radius:50%;animation:pulse 2s infinite}@keyframes pulse{0%,to{transform:translateY(-50%) scale(1);opacity:1}50%{transform:translateY(-50%) scale(1.5);opacity:.7}}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:3rem}.feature-item{background:#ffffff1a;padding:2rem 1.5rem;border-radius:16px;border:1px solid rgba(255,255,255,.15);transition:all .3s ease;cursor:pointer}.feature-item:hover{transform:translateY(-5px);background:#ffffff26;box-shadow:0 15px 35px #0000001a}.feature-icon{font-size:2.5rem;margin-bottom:1rem;display:inline-block;animation:bounce 2s infinite}.feature-item:nth-child(2) .feature-icon{animation-delay:.2s}.feature-item:nth-child(3) .feature-icon{animation-delay:.4s}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%{transform:translateY(-10px)}60%{transform:translateY(-5px)}}.feature-item h3{color:#fff;font-size:1.2rem;margin-bottom:.5rem;font-weight:600}.feature-item p{color:#fffc;font-size:.95rem;line-height:1.5}.action-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.primary-button{position:relative;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:1rem 2.5rem;border-radius:50px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;overflow:hidden;box-shadow:0 10px 25px #667eea4d}.primary-button:hover{transform:translateY(-2px);box-shadow:0 15px 35px #667eea66}.button-glow{position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s ease}.primary-button:hover .button-glow{left:100%}.secondary-button{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.3);padding:1rem 2.5rem;border-radius:50px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.secondary-button:hover{border-color:#fff9;background:#ffffff1a;transform:translateY(-2px)}.footer{margin-top:3rem;text-align:center}.footer p{color:#ffffffb3;font-size:.9rem;font-weight:300}@media (max-width: 768px){.glass-card{padding:2rem;margin:1rem}.main-title{font-size:clamp(2.5rem,10vw,4rem)}.subtitle{font-size:1.1rem}.feature-grid{grid-template-columns:1fr;gap:1.5rem}.action-buttons{flex-direction:column;align-items:center}.primary-button,.secondary-button{width:100%;max-width:280px}.time-display{position:static;margin-bottom:2rem;display:inline-block}}@media (max-width: 480px){.main-container{padding:1rem}.glass-card{padding:1.5rem}.pulse-dot{display:none}}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light 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