*{margin:0;padding:0;box-sizing:border-box}
html{overflow-x:hidden}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;line-height:1.6;color:#ffffff;overflow-x:hidden;background:linear-gradient(135deg,#1b1e2f 0%,#2d1b3d 25%,#1b1e2f 50%,#3d2b1f 75%,#1b1e2f 100%);background-size:400% 400%;animation:gradientShift 15s ease infinite}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
.nav-main{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(27,30,47,0.95);backdrop-filter:blur(10px);transition:all 0.3s ease}
.nav-layout{display:flex;align-items:center;justify-content:space-between;padding:0 10px;height:60px;max-width:1920px;margin:0 auto}
.logo-zone{flex-shrink:0}
.logo-zone img{display:block}
.logo-zone a{text-decoration:none}
.menu-desktop{display:flex;gap:30px;align-items:center}
.nav-current{color:#ffd700;font-weight:600}
.nav-link{color:#ffffff;text-decoration:none;font-weight:500;transition:color 0.3s ease}
.nav-link:hover{color:#ffd700}
.auth-desktop{display:flex;gap:15px;align-items:center}
.btn-signup,.btn-signin{padding:8px 20px;border-radius:25px;text-decoration:none;font-weight:600;transition:all 0.3s ease}
.btn-signup{background:linear-gradient(135deg,#ffd700,#ffed4e);color:#1b1e2f}
.btn-signup:hover{transform:translateY(-2px);box-shadow:0 5px 15px rgba(255,215,0,0.4)}
.btn-signin{background:transparent;color:#ffd700;border:2px solid #ffd700}
.btn-signin:hover{background:#ffd700;color:#1b1e2f}
.hamburger-btn{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:4px;padding:5px}
.hamburger-btn span{width:25px;height:3px;background:#ffffff;transition:all 0.3s ease}
.mobile-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.7);z-index:1001;opacity:0;visibility:hidden;transition:all 0.3s ease}
.mobile-menu{position:fixed;top:0;right:-300px;width:300px;height:100vh;background:rgba(27,30,47,0.98);backdrop-filter:blur(15px);z-index:1002;transition:right 0.3s ease;padding:80px 20px 20px}
.mobile-nav{display:flex;flex-direction:column;gap:20px;margin-bottom:40px}
.mobile-nav .nav-current,.mobile-nav .nav-link{display:block;padding:15px 0;border-bottom:1px solid rgba(255,255,255,0.1);font-size:18px}
.mobile-auth{display:flex;flex-direction:column;gap:15px}
.mobile-auth .btn-signup,.mobile-auth .btn-signin{text-align:center;padding:12px 20px}
.main-content{margin-top:60px;min-height:100vh}
.app-intro{padding:80px 10px;text-align:center;position:relative}
.app-intro::before{content:'📱';position:absolute;top:15%;right:10%;font-size:8rem;opacity:0.1;animation:floatDiagonal 20s linear infinite}
.app-intro::after{content:'⚡';position:absolute;bottom:20%;left:5%;font-size:6rem;opacity:0.12;animation:floatVertical 18s ease-in-out infinite}
@keyframes floatDiagonal{0%{transform:translate(0,0)}50%{transform:translate(-40px,30px)}100%{transform:translate(0,0)}}
@keyframes floatVertical{0%,100%{transform:translateY(0)}50%{transform:translateY(-50px)}}
@keyframes floatHorizontal{0%,100%{transform:translateX(0)}50%{transform:translateX(70px)}}
.intro-layout{max-width:800px;margin:0 auto}
.app-title{font-size:clamp(2.5rem,5vw,3.5rem);font-weight:800;margin-bottom:20px;background:linear-gradient(135deg,#ffd700,#ffed4e);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.app-description{font-size:clamp(1.1rem,2vw,1.3rem);margin-bottom:40px;opacity:0.9}
.download-buttons{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.download-android,.download-ios{display:flex;align-items:center;gap:15px;padding:15px 30px;background:rgba(255,255,255,0.1);backdrop-filter:blur(10px);border-radius:25px;text-decoration:none;color:#ffffff;font-weight:600;transition:all 0.3s ease}
.download-android:hover,.download-ios:hover{transform:translateY(-5px);background:rgba(255,215,0,0.2)}
.performance-metrics,.installation-process,.network-optimization,.feature-comparison,.security-considerations,.troubleshooting-guide,.device-compatibility,.update-maintenance,.battery-performance,.bandwidth-requirements,.app-limitations{padding:60px 10px;max-width:1200px;margin:0 auto;position:relative}
.performance-metrics::before{content:'📊';position:absolute;top:10%;left:8%;font-size:7rem;opacity:0.08;animation:floatHorizontal 22s ease-in-out infinite}
.installation-process::before{content:'⚙️';position:absolute;bottom:15%;right:5%;font-size:6rem;opacity:0.15;animation:floatDiagonal 19s linear infinite}
.network-optimization::before{content:'📡';position:absolute;top:5%;right:10%;font-size:8rem;opacity:0.1;animation:floatVertical 25s ease-in-out infinite}
.feature-comparison::before{content:'⚖️';position:absolute;bottom:10%;left:3%;font-size:7rem;opacity:0.12;animation:floatHorizontal 21s ease-in-out infinite}
.security-considerations::before{content:'🔐';position:absolute;top:20%;right:8%;font-size:6rem;opacity:0.15;animation:floatDiagonal 24s linear infinite}
.troubleshooting-guide::before{content:'🔧';position:absolute;bottom:5%;left:5%;font-size:8rem;opacity:0.08;animation:floatVertical 20s ease-in-out infinite}
h2{font-size:clamp(2rem,4vw,2.8rem);font-weight:700;margin-bottom:30px;color:#ffd700}
h3{font-size:clamp(1.3rem,2.5vw,1.6rem);font-weight:600;margin-bottom:15px;color:#ffd700}
p{margin-bottom:20px;opacity:0.9;line-height:1.8}
.metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin:40px 0}
.metric-card{background:rgba(255,255,255,0.1);backdrop-filter:blur(8px);padding:30px;border-radius:20px;text-align:center;transition:all 0.3s ease}
.metric-card:hover{transform:translateY(-5px)}
.metric-value{font-size:2.5rem;font-weight:800;color:#ffd700;margin-bottom:10px}
.metric-label{font-size:1rem;font-weight:600;margin-bottom:10px}
.metric-detail{font-size:0.9rem;opacity:0.7}
.platform-guides{display:grid;gap:40px;margin:40px 0}
.guide-block{background:rgba(255,255,255,0.05);padding:30px;border-radius:20px}
.install-steps{margin:20px 0}
.step-row{display:flex;gap:15px;align-items:flex-start;margin-bottom:15px}
.step-marker{background:linear-gradient(135deg,#ffd700,#ffed4e);color:#1b1e2f;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;font-size:0.9rem}
.step-text{opacity:0.9}
.network-comparison{display:grid;gap:30px;margin:40px 0}
.network-stats{background:rgba(255,255,255,0.05);padding:25px;border-radius:15px}
.performance-data{display:grid;gap:15px;margin:20px 0}
.data-point{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(255,255,255,0.1)}
.data-label{opacity:0.8}
.data-figure{color:#ffd700;font-weight:700}
.cta-middle,.cta-final{display:inline-block;padding:15px 40px;background:linear-gradient(135deg,#ffd700,#ffed4e);color:#1b1e2f;text-decoration:none;font-weight:700;border-radius:30px;transition:all 0.3s ease;margin:20px 0}
.cta-middle:hover,.cta-final:hover{transform:translateY(-3px);box-shadow:0 10px 25px rgba(255,215,0,0.4)}
.table-container{overflow-x:auto}
.feature-table{width:100%;border-collapse:collapse;margin:30px 0;background:rgba(255,255,255,0.05);border-radius:15px;overflow:hidden}
.feature-table th,.feature-table td{padding:15px;text-align:left;border-bottom:1px solid rgba(255,255,255,0.1)}
.feature-table th{background:rgba(255,215,0,0.1);color:#ffd700;font-weight:600}
.feature-table td{opacity:0.9}
.security-features{display:grid;gap:25px;margin:30px 0}
.security-item{background:rgba(255,255,255,0.05);padding:25px;border-radius:15px}
.problem-solutions{display:grid;gap:30px;margin:30px 0}
.problem-block{background:rgba(255,255,255,0.05);padding:25px;border-radius:15px}
.compatibility-specs{display:grid;gap:40px;margin:40px 0}
.platform-requirements{background:rgba(255,255,255,0.05);padding:30px;border-radius:20px}
.spec-list{margin:20px 0}
.spec-item{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(255,255,255,0.1)}
.spec-name{opacity:0.8}
.spec-value{color:#ffd700;font-weight:600}
.update-timeline{display:grid;gap:25px;margin:30px 0}
.update-type{background:rgba(255,255,255,0.05);padding:25px;border-radius:15px}
.battery-analysis{margin:30px 0}
.speed-recommendations{display:grid;gap:20px;margin:30px 0}
.speed-tier{display:flex;gap:20px;align-items:center;background:rgba(255,255,255,0.05);padding:20px;border-radius:15px}
.speed-label{color:#ffd700;font-weight:600;min-width:120px}
.speed-range{color:#ffffff;font-weight:600;min-width:100px}
.speed-features{opacity:0.8;flex:1}
.limitation-areas{display:grid;gap:25px;margin:30px 0}
.limitation-item{background:rgba(255,255,255,0.05);padding:25px;border-radius:15px}
.site-footer{background:rgba(27,30,47,0.95);backdrop-filter:blur(15px);padding:40px 10px 20px;margin-top:60px}
.footer-content{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px}
.footer-heading{color:#ffd700;font-size:1.2rem;font-weight:600;margin-bottom:20px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#ffffff;text-decoration:none;opacity:0.8;transition:opacity 0.3s ease}
.footer-links a:hover{opacity:1;color:#ffd700}
.payment-icons,.provider-logos{display:flex;flex-wrap:wrap;gap:15px;align-items:center}
.payment-icons img,.provider-logos img{opacity:0.8;transition:opacity 0.3s ease}
.payment-icons img:hover,.provider-logos img:hover{opacity:1}
.footer-legal{margin-top:30px;padding-top:20px;border-top:1px solid rgba(255,255,255,0.1);text-align:center}
.license-text{font-size:0.85rem;opacity:0.7;line-height:1.6}
@media (max-width:1080px){
.menu-desktop,.auth-desktop{display:none}
.hamburger-btn{display:flex}
.mobile-overlay.active{opacity:1;visibility:visible}
.mobile-menu.active{right:0}
.hamburger-btn.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger-btn.active span:nth-child(2){opacity:0}
.hamburger-btn.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-6px)}
}
@media (max-width:768px){
.nav-layout{padding:0 15px}
.app-intro{padding:60px 15px}
.performance-metrics,.installation-process,.network-optimization,.feature-comparison,.security-considerations,.troubleshooting-guide,.device-compatibility,.update-maintenance,.battery-performance,.bandwidth-requirements,.app-limitations{padding:40px 15px}
.metrics-grid{grid-template-columns:1fr;gap:20px}
.download-buttons{flex-direction:column;align-items:center}
.download-android,.download-ios{width:100%;max-width:300px;justify-content:center}
.network-comparison,.platform-guides{grid-template-columns:1fr}
.speed-tier{flex-direction:column;text-align:center;gap:10px}
.spec-item,.data-point{flex-direction:column;gap:5px;text-align:center}
.footer-content{grid-template-columns:1fr;gap:25px;text-align:center}
.payment-icons,.provider-logos{justify-content:center}
}
@media (max-width:480px){
.nav-layout{padding:0 10px}
.app-title{font-size:2rem}
.app-description{font-size:1rem}
h2{font-size:1.8rem}
h3{font-size:1.2rem}
.metric-value{font-size:2rem}
.download-android,.download-ios{padding:12px 20px;font-size:0.9rem}
.metric-card,.guide-block,.security-item,.problem-block,.platform-requirements{padding:20px}
.step-row{flex-direction:column;align-items:center;text-align:center}
.step-marker{margin-bottom:10px}
.feature-table{font-size:0.85rem}
.feature-table th,.feature-table td{padding:10px 8px}
}
@media (max-width:320px){
.app-intro{padding:40px 10px}
.performance-metrics,.installation-process,.network-optimization,.feature-comparison,.security-considerations,.troubleshooting-guide,.device-compatibility,.update-maintenance,.battery-performance,.bandwidth-requirements,.app-limitations{padding:30px 10px}
h2{font-size:1.5rem}
.cta-middle,.cta-final{padding:10px 20px;font-size:0.85rem}
.download-android,.download-ios{padding:10px 15px}
.download-android img,.download-ios img{width:32px;height:32px}
}