:root{--primary: #00a3ff;--primary-dark: #0077cc;--secondary: #00ffaa;--dark: #0a0e17;--darker: #05080f;--light: #e0f2ff;--gray: #8b9db3;--success: #00e676;--warning: #ff9100;--danger: #ff1744}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6;color:var(--light);background-color:var(--dark);background-image:radial-gradient(circle at 25% 25%,rgba(0,163,255,.1) 0%,transparent 50%),radial-gradient(circle at 75% 75%,rgba(0,255,170,.1) 0%,transparent 50%);overflow-x:hidden}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1rem}.hide{display:inline-block;width:0;height:0;overflow:hidden}header{position:relative;background:linear-gradient(135deg,var(--darker),var(--dark));color:#fff;text-align:center;padding:4rem 1rem;overflow:hidden}header:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));animation:rainbow 8s linear infinite}@keyframes rainbow{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}.header-content{position:relative;z-index:2}.particles{position:absolute;top:0;left:0;width:100%;height:100%;z-index:1;opacity:.3}.particle{position:absolute;background-color:var(--primary);border-radius:50%;opacity:0;animation:float 15s infinite linear}@keyframes float{0%{transform:translateY(0) translate(0);opacity:0}10%{opacity:.5}90%{opacity:.5}to{transform:translateY(-100vh) translate(20vw);opacity:0}}h1,h2,h3,h4{font-weight:700;margin-bottom:1rem;line-height:1.2}h1{font-size:2.5rem;background:linear-gradient(90deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block;margin-bottom:1.5rem}h2{font-size:2rem;color:var(--primary);position:relative;padding-bottom:.5rem;margin-bottom:2rem}h2:after{content:"";position:absolute;bottom:0;left:0;width:60px;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary))}h3{font-size:1.5rem;color:var(--secondary);margin-bottom:1rem}p{margin-bottom:1rem}a{color:var(--primary);text-decoration:none;transition:all .3s ease}a:hover{color:var(--secondary)}.btn{display:inline-block;padding:.8rem 1.8rem;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-radius:30px;font-weight:600;text-transform:uppercase;letter-spacing:1px;transition:all .3s ease;border:none;cursor:pointer;box-shadow:0 4px 15px #00a3ff4d}.btn:hover{transform:translateY(-3px);box-shadow:0 6px 20px #00a3ff66;color:#fff}.btn-secondary{background:linear-gradient(135deg,var(--secondary),#00cc88)}.btn-secondary:hover{box-shadow:0 6px 20px #0fa6}nav{position:sticky;top:0;background:#0a0e17f2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;border-bottom:1px solid rgba(0,163,255,.1);box-shadow:0 2px 20px #0000004d}.nav-container{display:flex;justify-content:space-between;align-items:center;padding:1rem}.nav-logo{font-size:1.5rem;font-weight:700;color:var(--primary)}.nav-logo span{color:var(--secondary)}.nav-links{display:flex;gap:2rem}.nav-links a{position:relative;font-weight:500;color:var(--gray)}.nav-links a:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:var(--secondary);transition:width .3s ease}.nav-links a:hover{color:var(--light)}.nav-links a:hover:after{width:100%}.mobile-menu-btn{display:none;background:none;border:none;color:var(--light);font-size:1.5rem;cursor:pointer}section{padding:5rem 0;position:relative}.section-bg{position:absolute;top:0;left:0;width:100%;height:100%;opacity:.05;z-index:-1;background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 L0,100 Z" fill="none" stroke="%2300a3ff" stroke-width="0.5" stroke-dasharray="5,5" /></svg>')}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-top:3rem}.feature-card{background:#05080f99;border-radius:10px;padding:2rem;transition:transform .3s ease,box-shadow .3s ease;border:1px solid rgba(0,163,255,.1);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.feature-card:hover{transform:translateY(-10px);box-shadow:0 10px 30px #00a3ff33;border-color:#00a3ff4d}.feature-icon{font-size:2.5rem;margin-bottom:1.5rem;color:var(--primary)}.packages-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:3rem}.package-card{background:#05080f99;border-radius:10px;padding:2rem;border:1px solid rgba(0,163,255,.1);transition:all .3s ease;position:relative;overflow:hidden}.package-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:5px;background:linear-gradient(90deg,var(--primary),var(--secondary))}.package-card:hover{transform:translateY(-10px);box-shadow:0 10px 30px #00a3ff33;border-color:#00a3ff4d}.package-price{font-size:2rem;font-weight:700;color:var(--secondary);margin:1rem 0}.package-price span{font-size:1rem;color:var(--gray)}.package-features{list-style:none;margin:1.5rem 0}.package-features li{position:relative;padding:.5rem 0 .5rem 1.5rem}.package-features li:before{content:"✓";position:absolute;left:0;color:var(--success)}.faq-item{margin-bottom:1.5rem;background:#05080f99;border-radius:8px;padding:1.5rem;border:1px solid rgba(0,163,255,.1)}.faq-question{font-weight:600;color:var(--primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center}.faq-answer{margin-top:1rem;color:var(--gray);display:none}.faq-item.active .faq-answer{display:block}.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-top:3rem}.testimonial-card{background:#05080f99;border-radius:10px;padding:2rem;border:1px solid rgba(0,163,255,.1);position:relative}.testimonial-card:before{content:'"';position:absolute;top:1rem;left:1rem;font-size:4rem;color:#00a3ff1a;font-family:serif;line-height:1}.testimonial-author{font-weight:600;color:var(--secondary);margin-top:1.5rem;display:flex;align-items:center}.testimonial-author:before{content:"—";margin-right:.5rem}.image-container{margin:2rem 0;border-radius:10px;overflow:hidden;box-shadow:0 10px 30px #0000004d;border:1px solid rgba(0,163,255,.2)}.image-container img{width:100%;height:auto;display:block;transition:transform .5s ease}.image-container:hover img{transform:scale(1.03)}.cta-section{text-align:center;background:linear-gradient(135deg,var(--darker),var(--dark));padding:4rem 1rem;border-radius:10px;margin:4rem 0;position:relative;overflow:hidden}.cta-section:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 20% 30%,rgba(0,163,255,.1) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(0,255,170,.1) 0%,transparent 50%)}.cta-content{position:relative;z-index:2}.cta-content h2:after{left:50%;transform:translate(-50%)}footer{background:var(--darker);padding:3rem 0;text-align:center;border-top:1px solid rgba(0,163,255,.1)}.footer-links{display:flex;justify-content:center;gap:2rem;margin:2rem 0}.social-links{display:flex;justify-content:center;gap:1.5rem;margin:2rem 0}.social-link{width:40px;height:40px;border-radius:50%;background:#00a3ff1a;display:flex;align-items:center;justify-content:center;transition:all .3s ease}.social-link:hover{background:var(--primary);transform:translateY(-3px)}.copyright{color:var(--gray);font-size:.9rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn 1s ease forwards}.delay-1{animation-delay:.2s}.delay-2{animation-delay:.4s}.delay-3{animation-delay:.6s}.delay-4{animation-delay:.8s}@media (max-width: 992px){h1{font-size:2.2rem}h2{font-size:1.8rem}section{padding:3rem 0}}@media (max-width: 768px){.nav-links{position:fixed;top:70px;left:0;width:100%;background:var(--darker);flex-direction:column;align-items:center;padding:2rem 0;gap:1.5rem;clip-path:circle(0 at 90% -10%);transition:clip-path .5s ease;pointer-events:none}.nav-links.active{clip-path:circle(1000px at 90% -10%);pointer-events:all}.mobile-menu-btn{display:block}.features,.packages-grid,.testimonials-grid{grid-template-columns:1fr}}@media (max-width: 576px){h1{font-size:1.8rem}h2{font-size:1.5rem}.btn{padding:.7rem 1.5rem}.package-card{padding:1.5rem}}