:root{--bg:#050a12;--ink:#e8f1ff;--muted:#8fa3bc;--cyan:#22d3ee;--amber:#f59e0b;--blue:#3b82f6;--line:rgba(34,211,238,.2);--card:rgba(10,22,38,.82);--r:20px;--shadow:0 24px 70px rgba(34,211,238,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Inter","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:radial-gradient(circle at 12% 8%,rgba(34,211,238,.16),transparent 26rem),radial-gradient(circle at 88% 14%,rgba(59,130,246,.14),transparent 24rem),linear-gradient(180deg,#02060d,var(--bg) 48%,#02050b);overflow-x:hidden}body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.38;background:linear-gradient(115deg,transparent 0 24%,rgba(34,211,238,.1) 24.2%,transparent 24.5% 56%,rgba(245,158,11,.08) 56.2%,transparent 56.5%),radial-gradient(circle at 30% 40%,rgba(34,211,238,.05) 0 1px,transparent 1.5px);background-size:100% 100%,28px 28px}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 40px));margin:0 auto}.topbar{position:sticky;top:0;z-index:10;background:rgba(5,10,18,.8);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:12px;font-weight:950}.logo{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;color:#031018;background:linear-gradient(135deg,var(--cyan),var(--amber));box-shadow:0 0 34px rgba(34,211,238,.3)}.links{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:14px}.links a,.lang{padding:10px 13px;border-radius:999px;border:1px solid transparent}.links a:hover,.links .active{color:var(--cyan);background:rgba(34,211,238,.1);border-color:var(--line)}.lang{color:var(--amber);border-color:var(--line);background:rgba(255,255,255,.04)}
.hero{padding:88px 0 62px}.hero-grid,.split{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}.eyebrow{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}.eyebrow span,.tag{display:inline-flex;padding:8px 12px;border-radius:999px;color:var(--cyan);background:rgba(34,211,238,.1);border:1px solid var(--line);font-size:13px;font-weight:900}h1,h2,h3{margin:0;letter-spacing:-.05em}h1{font-size:clamp(42px,7vw,82px);line-height:1.02}h2{font-size:clamp(30px,4vw,50px);line-height:1.08;margin:14px 0}h3{font-size:20px;margin-bottom:10px}p{color:var(--muted);line-height:1.82}.lead{font-size:18px;max-width:760px;margin:24px 0}.actions{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:14px;font-weight:950;color:#031018;background:linear-gradient(135deg,var(--cyan),#67e8f9);box-shadow:0 16px 34px rgba(34,211,238,.18)}.btn-soft{color:var(--cyan);background:rgba(255,255,255,.04);border:1px solid var(--line);box-shadow:none}.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}.trust div,.card,.step,.faq-item,.codebox,.visual-card{position:relative;border:1px solid var(--line);border-radius:var(--r);background:var(--card);backdrop-filter:blur(14px);box-shadow:var(--shadow)}.trust div{padding:16px}.trust b{display:block;color:var(--amber);font-size:22px}.trust span{color:var(--muted);font-size:13px}
.device{position:relative;padding:18px;border-radius:28px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));box-shadow:var(--shadow);overflow:hidden}.device:before{content:"LINK MAP";position:absolute;right:24px;top:24px;z-index:2;padding:8px 12px;border-radius:999px;background:rgba(3,10,18,.85);color:var(--cyan);border:1px solid var(--line);font-size:12px;font-weight:950}.device:after{content:"";position:absolute;left:12%;right:12%;top:50%;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),var(--amber),transparent);box-shadow:0 0 24px rgba(34,211,238,.45);z-index:1}.device img{border-radius:20px;aspect-ratio:4/5;object-fit:cover;opacity:.9}
section{padding:74px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.section-head p{max-width:560px;margin:0}.grid{display:grid;gap:18px}.platforms{grid-template-columns:repeat(5,1fr)}.cards,.compat,.reco-grid,.use-grid{grid-template-columns:repeat(3,1fr)}.steps{grid-template-columns:repeat(3,1fr);counter-reset:step}.faq{grid-template-columns:repeat(2,1fr)}.card,.step,.faq-item{padding:24px;overflow:hidden}.card:before,.step:before,.faq-item:before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),var(--amber),transparent)}.icon{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;margin-bottom:16px;color:#031018;background:var(--cyan);font-weight:950;box-shadow:0 0 0 6px rgba(34,211,238,.12)}.meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.meta span{font-size:12px;color:var(--muted);padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line)}.codebox{padding:24px;font-family:Consolas,"Courier New",monospace;color:#9ef0ff;line-height:1.9}.checklist{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}.checklist span{border:1px solid var(--line);border-radius:14px;padding:14px;color:var(--muted);background:rgba(255,255,255,.035)}.visual-card{padding:16px;overflow:hidden}.visual-card img,.reco img{width:100%;object-fit:cover;border-radius:16px}.reco img{height:188px;margin-bottom:18px}.step:after{counter-increment:step;content:"Hop " counter(step);display:inline-flex;margin-top:16px;padding:8px 12px;border-radius:999px;color:#031018;background:var(--amber);font-size:12px;font-weight:950}.cta-box{text-align:center;border:1px solid var(--line);border-radius:32px;padding:52px;background:linear-gradient(135deg,rgba(34,211,238,.12),rgba(245,158,11,.08));box-shadow:var(--shadow)}.footer{padding:36px 0;border-top:1px solid var(--line);color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(5,1fr);gap:18px}.footer b{display:block;color:var(--ink);margin-bottom:10px}
@media(max-width:900px){.nav{align-items:flex-start;flex-direction:column;padding:16px 0}.hero-grid,.split,.platforms,.cards,.compat,.reco-grid,.use-grid,.steps,.faq,.checklist,.footer-grid{grid-template-columns:1fr}.section-head{display:block}h1{font-size:40px}}