:root{--primary-gradient:linear-gradient(120deg,#6a11cb,#2575fc);--text-color:#fff;--background-color:#0a0e17;--dropdown-bg:#1a1f2e;--dropdown-hover:#2b3245;--feature-card-bg:#1a1f2e;--feature-card-shadow:0 4px 20px rgba(0,0,0,.25);--features-bg:#0f1219;--header-bg:rgba(10,14,23,.9);--card-text:#fff;--card-subtitle:hsla(0,0%,100%,.8);--border-color:hsla(0,0%,100%,.1)}html.light{--primary-gradient:linear-gradient(120deg,#4481eb,#04befe);--text-color:#333;--background-color:#fff;--dropdown-bg:#fff;--dropdown-hover:#f5f5f5;--feature-card-bg:#fff;--feature-card-shadow:0 4px 20px rgba(0,0,0,.1);--features-bg:#f7f9fc;--header-bg:hsla(0,0%,100%,.95);--card-text:#333;--card-subtitle:#666;--border-color:#e5e7eb}.main-container{width:100%;min-height:100vh;display:flex;flex-direction:column;background-color:var(--background-color);color:var(--text-color);transition:background-color .3s ease,color .3s ease}.header{justify-content:space-between;padding:1.5rem 2rem;width:100%;box-sizing:border-box;position:relative;z-index:10;background-color:var(--header-bg);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);transition:background-color .3s ease}.header,.logo-container{display:flex;align-items:center}.logo-text{font-size:1.5rem;font-weight:700;color:var(--text-color);margin:0;transition:color .3s ease}.header-right{display:flex;align-items:center}.user-dropdown-container{position:relative}.user-button{background:transparent;border:1px solid var(--border-color);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;color:var(--text-color)}.user-button:hover{background:hsla(0,0%,50%,.1)}.user-icon{width:24px;height:24px}.dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;background-color:var(--dropdown-bg);border-radius:8px;box-shadow:0 5px 20px rgba(0,0,0,.2);min-width:150px;z-index:100;overflow:hidden;animation:fadeIn .2s ease;border:1px solid var(--border-color)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.dropdown-item{display:block;width:100%;padding:12px 16px;text-align:left;background:none;border:none;color:var(--text-color);font-size:.9rem;cursor:pointer;transition:background-color .2s ease}.dropdown-item:hover{background-color:var(--dropdown-hover)}.hero-section{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 2rem;position:relative;background:var(--primary-gradient);flex:1;text-align:center;transition:background .3s ease}.hero-section:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at top right,rgba(106,17,203,.4),transparent 50%),radial-gradient(circle at bottom left,rgba(37,117,252,.4),transparent 50%);z-index:0;transition:background .3s ease}html.light .hero-section:before{background:radial-gradient(circle at top right,rgba(68,129,235,.4),transparent 50%),radial-gradient(circle at bottom left,rgba(4,190,254,.4),transparent 50%)}.hero-content{position:relative;z-index:1;max-width:800px;margin-bottom:3rem}.main-title{font-size:5rem;font-weight:800;margin-bottom:1rem;background:linear-gradient(90deg,#fff,#e0e0e0);-webkit-background-clip:text;background-clip:text;transition:background .3s ease}.main-title,html.light .main-title{-webkit-text-fill-color:transparent}html.light .main-title{background:linear-gradient(90deg,#333,#555);-webkit-background-clip:text;background-clip:text}.subtitle{font-size:1.5rem;line-height:1.5;opacity:.9;margin-bottom:2rem;color:#fff}html.light .subtitle{color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.1)}.app-preview-container{width:100%;max-width:1200px;position:relative;z-index:1}.app-preview{width:100%;border-radius:8px;overflow:hidden;box-shadow:0 20px 80px rgba(0,0,0,.5);transition:box-shadow .3s ease}html.light .app-preview{box-shadow:0 20px 60px rgba(0,0,0,.25)}.app-screenshot-placeholder{width:100%;height:400px;background-color:rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;border-radius:8px}.app-screenshot{width:100%;height:auto;display:block;-o-object-fit:cover;object-fit:cover;border-radius:8px}@media (max-width:768px){.main-title{font-size:3rem}.subtitle{font-size:1.2rem}.dropdown-menu{position:fixed;top:auto;bottom:0;right:0;left:0;border-radius:16px 16px 0 0;min-width:100%;box-shadow:0 -5px 20px rgba(0,0,0,.3)}html.light .dropdown-menu{box-shadow:0 -5px 20px rgba(0,0,0,.15)}.dropdown-item{padding:16px;text-align:center;font-size:1rem}.app-screenshot-placeholder{height:250px}}.cta-buttons{display:flex;gap:1rem;justify-content:center;margin-top:2rem}.cta-button{padding:.8rem 2rem;font-size:1.1rem;font-weight:600;border-radius:8px;cursor:pointer;transition:all .2s ease}.cta-button.primary{background-color:#fff;color:#6a11cb;border:none}html.light .cta-button.primary{background-color:#fff;color:#202020}.cta-button.primary:hover{background-color:hsla(0,0%,100%,.9);transform:translateY(-2px)}html.light .cta-button.primary:hover{background-color:#fff}.cta-button.secondary{background-color:transparent;color:#fff;border:1px solid hsla(0,0%,100%,.3)}.cta-button.secondary:hover{background-color:hsla(0,0%,100%,.1);transform:translateY(-2px)}.features-section{padding:5rem 2rem;background-color:var(--features-bg);color:#fff;text-align:center;transition:background-color .3s ease}.section-title{font-size:2.5rem;font-weight:700;margin-bottom:3rem;background:linear-gradient(120deg,#6a11cb,#2575fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-fill-color:transparent;display:inline-block;color:var(--text-color);transition:color .3s ease}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;max-width:1200px;margin:0 auto}.feature-card{background-color:var(--feature-card-bg);border-radius:16px;padding:2rem;transition:transform .3s ease,box-shadow .3s ease,background-color .3s ease;text-align:center;box-shadow:var(--feature-card-shadow)}.feature-card:hover{transform:translateY(-10px);box-shadow:0 20px 30px rgba(0,0,0,.2)}.feature-icon{width:60px;height:60px;background:var(--primary-gradient);border-radius:12px;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem}.feature-icon .icon{width:30px;height:30px;color:#fff}.feature-title{font-size:1.4rem;font-weight:600;margin-bottom:1rem;color:var(--card-text);transition:color .3s ease}.feature-description{color:hsla(0,0%,100%,.7);line-height:1.6;color:var(--card-subtitle);transition:color .3s ease}@media (max-width:768px){.cta-buttons{flex-direction:column}.section-title{font-size:2rem}.features-grid{grid-template-columns:1fr}.feature-card{padding:1.5rem}}