:root{--bg:#061114;--panel:#0b1d23;--ink:#ecfeff;--muted:#93aeb5;--cyan:#22d3ee;--lime:#a3e635;--green:#22c55e;--line:rgba(34,211,238,.18);--card:rgba(8,31,38,.78);--r:22px;--shadow:0 26px 70px rgba(34,211,238,.11)}
*{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 18% 8%,rgba(34,211,238,.18),transparent 26rem),radial-gradient(circle at 82% 18%,rgba(163,230,53,.13),transparent 24rem),linear-gradient(180deg,#020708,var(--bg) 50%,#020607);overflow-x:hidden}body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.36;background:linear-gradient(90deg,transparent 49%,rgba(34,211,238,.08) 50%,transparent 51%),linear-gradient(transparent 49%,rgba(34,211,238,.07) 50%,transparent 51%);background-size:58px 58px}
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(2,7,8,.78);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:14px;display:grid;place-items:center;color:#021014;background:linear-gradient(135deg,var(--cyan),var(--lime));box-shadow:0 0 36px rgba(34,211,238,.28)}.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:12px;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(--lime);border-color:var(--line);background:rgba(255,255,255,.04)}
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.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:"GATEWAY";position:absolute;right:26px;top:26px;z-index:2;padding:8px 12px;border-radius:999px;background:rgba(2,7,8,.82);color:var(--lime);border:1px solid var(--line);font-size:12px;font-weight:950}.device:after{content:"";position:absolute;inset:18%;border:2px solid rgba(34,211,238,.24);border-radius:22px;box-shadow:0 0 0 24px rgba(34,211,238,.045),0 0 70px rgba(34,211,238,.24)}.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{position:relative;padding:24px;overflow:hidden}.card:before,.step:before,.faq-item:before{content:"";position:absolute;left:22px;top:0;width:1px;height:100%;background:linear-gradient(transparent,var(--cyan),transparent);opacity:.45}.icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;color:#021014;background:var(--cyan);font-weight:950}.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:#b8fbff;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:18px}.reco img{height:188px;margin-bottom:18px}.step:after{counter-increment:step;content:"Gate " counter(step);display:inline-flex;margin-top:16px;padding:8px 12px;border-radius:999px;color:#021014;background:var(--lime);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,.14),rgba(163,230,53,.1));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:42px}}