*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
--primary:#2461e8;
--primary-dark:#1a4dc7;
--primary-light:#4a7ff0;
--accent:#00d4ff;
--dark:#0d1b3e;
--dark2:#152450;
--text:#2c3e6b;
--text-light:#5a6a9a;
--bg:#f4f7ff;
--white:#fff;
--border:#dde5f8;
--radius:12px;
--shadow:0 8px 32px rgba(36,97,232,.12);
--shadow-lg:0 16px 48px rgba(36,97,232,.18);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;color:var(--text);background:var(--white);line-height:1.6;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{cursor:pointer;border:none;outline:none}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-title{text-align:center;font-size:2rem;font-weight:700;color:var(--dark);margin-bottom:12px;line-height:1.3}
.section-subtitle{text-align:center;color:var(--text-light);font-size:1rem;max-width:600px;margin:0 auto 48px}

.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:50px;font-size:1rem;font-weight:600;transition:all .25s ease;cursor:pointer;letter-spacing:.02em}
.btn-primary{background:var(--primary);color:var(--white);box-shadow:0 4px 16px rgba(36,97,232,.35)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(36,97,232,.45)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:var(--white);transform:translateY(-2px)}
.btn-white{background:var(--white);color:var(--primary);box-shadow:0 4px 16px rgba(0,0,0,.12)}
.btn-white:hover{background:var(--bg);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.18)}

/* NAV */
#navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:0 24px;background:rgba(13,27,62,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08);transition:all .3s ease}
#navbar.scrolled{padding:0 24px;background:rgba(13,27,62,.98);box-shadow:0 2px 20px rgba(0,0,0,.3)}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center}
.nav-logo-icon svg{width:20px;height:20px;fill:var(--white)}
.nav-logo-text{font-size:1.3rem;font-weight:800;color:var(--white);letter-spacing:.02em}
.nav-logo-text span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{color:rgba(255,255,255,.82);font-size:.9rem;padding:8px 14px;border-radius:6px;transition:all .2s}
.nav-links a:hover{color:var(--white);background:rgba(255,255,255,.1)}
.nav-cta{background:var(--primary);color:var(--white)!important;padding:9px 20px!important;border-radius:50px!important}
.nav-cta:hover{background:var(--primary-dark)!important}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--white);border-radius:2px;transition:all .3s}

/* HERO */
#hero{padding-top:64px;min-height:100vh;background:linear-gradient(135deg,var(--dark) 0%,var(--dark2) 50%,#1a3a8f 100%);display:flex;align-items:center;position:relative;overflow:hidden}
#hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;max-width:1200px;margin:0 auto;padding:60px 24px;width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(0,212,255,.15);border:1px solid rgba(0,212,255,.3);color:var(--accent);padding:6px 16px;border-radius:50px;font-size:.82rem;font-weight:600;margin-bottom:24px}
.hero-badge::before{content:'';width:8px;height:8px;background:var(--accent);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.3)}}
.hero-title{font-size:3rem;font-weight:800;color:var(--white);line-height:1.2;margin-bottom:20px}
.hero-title span{background:linear-gradient(90deg,var(--accent),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{color:rgba(255,255,255,.72);font-size:1.05rem;line-height:1.75;margin-bottom:32px}
.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.hero-guarantee{display:flex;align-items:center;gap:8px;margin-top:24px;color:rgba(255,255,255,.6);font-size:.88rem}
.hero-guarantee svg{width:16px;height:16px;fill:none;stroke:#4ade80;stroke-width:2.5}
.hero-img{position:relative}
.hero-img img{width:100%;filter:drop-shadow(0 20px 40px rgba(0,212,255,.25));animation:float 4s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
.hero-stats{display:flex;gap:32px;margin-top:36px;padding-top:36px;border-top:1px solid rgba(255,255,255,.1)}
.stat-item{text-align:center}
.stat-num{font-size:1.6rem;font-weight:800;color:var(--white)}
.stat-num span{color:var(--accent)}
.stat-label{font-size:.78rem;color:rgba(255,255,255,.5);margin-top:2px}

/* FEATURES */
#features{background:var(--bg)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:48px}
.feature-card{background:var(--white);border-radius:var(--radius);padding:36px 28px;text-align:center;box-shadow:var(--shadow);transition:all .3s;border:1px solid var(--border)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(36,97,232,.2)}
.feature-icon{width:72px;height:72px;border-radius:16px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center}
.feature-icon svg{width:36px;height:36px}
.fi-blue{background:linear-gradient(135deg,rgba(36,97,232,.12),rgba(0,212,255,.12))}
.fi-blue svg{fill:none;stroke:var(--primary);stroke-width:1.8}
.fi-green{background:linear-gradient(135deg,rgba(16,185,129,.12),rgba(52,211,153,.12))}
.fi-green svg{fill:none;stroke:#10b981;stroke-width:1.8}
.fi-purple{background:linear-gradient(135deg,rgba(139,92,246,.12),rgba(167,139,250,.12))}
.fi-purple svg{fill:none;stroke:#8b5cf6;stroke-width:1.8}
.feature-card h3{font-size:1.15rem;font-weight:700;color:var(--dark);margin-bottom:10px}
.feature-card p{font-size:.9rem;color:var(--text-light);line-height:1.65}

/* DEVICE SUPPORT */
#devices{background:var(--white)}
.devices-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.devices-content h2{font-size:2rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.devices-content p{color:var(--text-light);line-height:1.7;margin-bottom:28px}
.device-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.device-tag{display:flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px 14px;font-size:.85rem;color:var(--text);font-weight:500}
.device-tag svg{width:16px;height:16px;fill:none;stroke:var(--primary);stroke-width:2}

/* FREE TRIAL */
#free-trial{background:linear-gradient(135deg,#f0f4ff,#e8f0fe)}
.free-trial-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.free-content h2{font-size:2rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.free-content p{color:var(--text-light);line-height:1.7;margin-bottom:28px}
.free-regions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.region-tag{background:var(--white);border:1px solid var(--border);border-radius:20px;padding:5px 14px;font-size:.83rem;color:var(--text);box-shadow:0 2px 8px rgba(36,97,232,.07)}

/* SERVERS */
#servers{background:var(--dark);position:relative;overflow:hidden}
#servers::after{content:'';position:absolute;bottom:-60px;left:-60px;width:400px;height:400px;background:radial-gradient(circle,rgba(36,97,232,.2),transparent 70%);pointer-events:none}
.servers-header{text-align:center;margin-bottom:48px}
.servers-header h2{color:var(--white);font-size:2rem;font-weight:700;margin-bottom:12px}
.servers-header p{color:rgba(255,255,255,.55);max-width:560px;margin:0 auto}
.world-map-wrap{position:relative;border-radius:16px;overflow:hidden;margin-bottom:36px}
.world-map-wrap img{width:100%;opacity:.9}
.server-count-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:36px}
.server-stat-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:24px;text-align:center}
.server-stat-num{font-size:2rem;font-weight:800;color:var(--accent)}
.server-stat-label{font-size:.83rem;color:rgba(255,255,255,.5);margin-top:6px}
.servers-cta{text-align:center}

/* SUPPORT */
#support{background:var(--white)}
.support-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.support-content h2{font-size:2rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.support-content p{color:var(--text-light);line-height:1.7;margin-bottom:28px}
.support-features{display:flex;flex-direction:column;gap:16px;margin-bottom:28px}
.support-item{display:flex;align-items:flex-start;gap:14px}
.support-item-icon{width:40px;height:40px;background:linear-gradient(135deg,rgba(36,97,232,.1),rgba(0,212,255,.1));border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.support-item-icon svg{width:20px;height:20px;fill:none;stroke:var(--primary);stroke-width:2}
.support-item h4{font-size:.95rem;font-weight:600;color:var(--dark);margin-bottom:3px}
.support-item p{font-size:.85rem;color:var(--text-light)}

/* ENTERPRISE */
#enterprise{background:linear-gradient(135deg,var(--dark),var(--dark2))}
.enterprise-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.enterprise-content h2{color:var(--white);font-size:2rem;font-weight:700;margin-bottom:16px}
.enterprise-content p{color:rgba(255,255,255,.65);line-height:1.7;margin-bottom:28px}
.enterprise-features{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.ent-feat{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.75);font-size:.92rem}
.ent-feat svg{width:18px;height:18px;flex-shrink:0;fill:none;stroke:var(--accent);stroke-width:2.5}

/* TESTIMONIALS */
#testimonials{background:var(--bg)}
.testimonials-header{text-align:center;margin-bottom:48px}
.testimonials-header .users-count{font-size:2.5rem;font-weight:800;color:var(--primary);margin-bottom:8px}
.testimonials-header .users-count span{color:var(--dark)}
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:var(--white);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);border:1px solid var(--border)}
.review-stars{display:flex;gap:4px;margin-bottom:16px}
.review-stars svg{width:16px;height:16px;fill:#f59e0b}
.review-text{font-size:.92rem;color:var(--text);line-height:1.7;margin-bottom:20px;font-style:italic}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:700;color:var(--white)}
.review-name{font-weight:600;color:var(--dark);font-size:.9rem}
.review-source{font-size:.78rem;color:var(--text-light)}

/* PRICING */
#pricing{background:var(--white)}
.pricing-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:40px;flex-wrap:wrap}
.ptab{background:var(--bg);border:2px solid var(--border);color:var(--text-light);padding:10px 24px;border-radius:50px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .25s}
.ptab.active,.ptab:hover{background:var(--primary);border-color:var(--primary);color:var(--white)}
.pricing-panels>div{display:none}
.pricing-panels>div.active{display:block}
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.price-card{border:2px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:all .3s;position:relative}
.price-card:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.price-card.popular{border-color:var(--primary);box-shadow:var(--shadow-lg)}
.popular-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(90deg,var(--primary),var(--accent));color:var(--white);font-size:.78rem;font-weight:700;padding:4px 16px;border-radius:50px;white-space:nowrap}
.price-period{font-size:1rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.price-num{display:flex;align-items:flex-start;justify-content:center;gap:3px;margin-bottom:4px}
.price-currency{font-size:.9rem;font-weight:700;color:var(--text-light);padding-top:6px}
.price-amount{font-size:3rem;font-weight:800;color:var(--primary);line-height:1}
.price-unit{font-size:.85rem;color:var(--text-light);align-self:flex-end;padding-bottom:4px}
.price-total{font-size:.83rem;color:var(--text-light);margin-bottom:4px}
.price-original{font-size:.78rem;color:#aaa;text-decoration:line-through;margin-bottom:20px}
.price-card .btn{width:100%}

/* NEWS */
#news{background:var(--bg)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:32px}
.news-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .3s;border:1px solid var(--border)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.news-img{width:100%;height:180px;object-fit:cover}
.news-body{padding:20px}
.news-tag{display:inline-block;background:rgba(36,97,232,.1);color:var(--primary);font-size:.75rem;font-weight:600;padding:3px 10px;border-radius:4px;margin-bottom:10px}
.news-title{font-size:.95rem;font-weight:600;color:var(--dark);line-height:1.5}

/* CTA BANNER */
#cta-banner{background:linear-gradient(135deg,var(--primary),#1a4dc7 50%,#0d3380);padding:80px 0;text-align:center}
#cta-banner h2{font-size:2.2rem;font-weight:800;color:var(--white);margin-bottom:16px}
#cta-banner p{color:rgba(255,255,255,.75);font-size:1.05rem;margin-bottom:36px;max-width:560px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.app-badges{display:flex;justify-content:center;gap:12px;margin-top:24px;flex-wrap:wrap}
.app-badge{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);padding:10px 20px;border-radius:10px;font-size:.85rem;transition:all .25s}
.app-badge:hover{background:rgba(255,255,255,.2)}
.app-badge svg{width:20px;height:20px;fill:var(--white)}

/* FOOTER */
footer{background:#09122a;padding:60px 0 0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand-logo .logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:7px;display:flex;align-items:center;justify-content:center}
.footer-brand-logo .logo-icon svg{width:18px;height:18px;fill:var(--white)}
.footer-brand-logo .logo-text{font-size:1.2rem;font-weight:800;color:var(--white)}
.footer-desc{color:rgba(255,255,255,.45);font-size:.87rem;line-height:1.65;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.social-link{width:36px;height:36px;background:rgba(255,255,255,.07);border-radius:8px;display:flex;align-items:center;justify-content:center;transition:all .25s}
.social-link:hover{background:var(--primary)}
.social-link svg{width:16px;height:16px;fill:rgba(255,255,255,.6)}
.social-link:hover svg{fill:var(--white)}
.footer-col h4{font-size:.92rem;font-weight:700;color:var(--white);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.85rem;color:rgba(255,255,255,.45);transition:color .2s}
.footer-links a:hover{color:var(--white)}
.footer-bottom{padding:24px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:gap;gap:12px}
.footer-copy{font-size:.82rem;color:rgba(255,255,255,.3)}
.footer-payment{display:flex;align-items:center;gap:8px}
.pay-icon{height:24px;background:rgba(255,255,255,.08);border-radius:4px;padding:3px 8px;display:flex;align-items:center}
.pay-icon svg{height:16px;width:auto}

/* COOKIE */
#cookie-bar{position:fixed;bottom:0;left:0;right:0;z-index:9999;background:rgba(13,27,62,.97);backdrop-filter:blur(12px);border-top:1px solid rgba(255,255,255,.1);padding:16px 24px;display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap;transition:transform .4s ease}
#cookie-bar.hidden{transform:translateY(110%)}
#cookie-bar p{color:rgba(255,255,255,.7);font-size:.85rem;max-width:700px}
#cookie-bar a{color:var(--accent)}
.btn-cookie{background:var(--primary);color:var(--white);padding:8px 22px;border-radius:50px;font-size:.85rem;font-weight:600;cursor:pointer;white-space:nowrap;border:none}
.btn-cookie:hover{background:var(--primary-dark)}

/* SCROLL TO TOP */
#scroll-top{position:fixed;bottom:24px;right:24px;z-index:500;width:44px;height:44px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(36,97,232,.4);opacity:0;visibility:hidden;transition:all .3s;cursor:pointer;border:none}
#scroll-top.show{opacity:1;visibility:visible}
#scroll-top:hover{background:var(--primary-dark);transform:translateY(-3px)}
#scroll-top svg{width:20px;height:20px;fill:none;stroke:var(--white);stroke-width:2.5}

/* MOBILE NAV */
@media(max-width:768px){
.nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(13,27,62,.98);flex-direction:column;align-items:stretch;padding:16px;gap:4px;border-top:1px solid rgba(255,255,255,.08)}
.nav-links.open{display:flex}
.nav-links a{padding:12px 16px;border-radius:8px}
.nav-toggle{display:flex}
.hero-inner{grid-template-columns:1fr;text-align:center}
.hero-img{order:-1}
.hero-title{font-size:2rem}
.hero-actions{justify-content:center}
.hero-stats{justify-content:center}
.hero-guarantee{justify-content:center}
.features-grid{grid-template-columns:1fr}
.devices-inner,.free-trial-inner,.support-inner,.enterprise-inner{grid-template-columns:1fr}
.server-count-grid{grid-template-columns:repeat(2,1fr)}
.pricing-grid{grid-template-columns:1fr 1fr}
.reviews-grid{grid-template-columns:1fr}
.news-grid{grid-template-columns:1fr}
.footer-top{grid-template-columns:1fr 1fr}
.section-title{font-size:1.6rem}
.devices-inner img,.free-trial-inner img,.support-inner img,.enterprise-inner img{order:-1}
}
@media(max-width:480px){
.pricing-grid{grid-template-columns:1fr}
.footer-top{grid-template-columns:1fr}
.hero-stats{flex-wrap:wrap;gap:20px}
.section{padding:56px 0}
.cta-btns{flex-direction:column;align-items:center}
}

/* ANIMATIONS */
.fade-up{opacity:0;transform:translateY(30px);transition:all .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}
.fade-up-delay-1{transition-delay:.1s}
.fade-up-delay-2{transition-delay:.2s}
.fade-up-delay-3{transition-delay:.3s}