:root{--bg:#0b0f1a;--bg2:#101627;--card:#151c31;--card2:#1a2340;--line:#242e4d;--txt:#e8ecf8;--mut:#9aa3bf;--mut2:#6b7590;--pri:#5b7cff;--pri2:#8a5cff;--grad:linear-gradient(135deg,#5b7cff 0%,#8a5cff 100%);--grad2:linear-gradient(135deg,#22d3ee 0%,#5b7cff 100%);--green:#34d399;--amber:#fbbf24;--red:#f87171;--r:16px;--r-sm:10px;--shadow:0 12px 40px rgba(0,0,0,.45);--shadow-sm:0 6px 20px rgba(0,0,0,.35)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--txt);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul{list-style:none}.wrap{width:min(1200px,92%);margin:0 auto}.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.25s;white-space:nowrap}.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(91,124,255,.35)}.btn-grad:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(91,124,255,.5)}.btn-ghost{background:transparent;color:var(--txt);border:1px solid var(--line)}.btn-ghost:hover{border-color:var(--pri);color:var(--pri)}.btn-sm{padding:9px 18px;font-size:13.5px}.sec{padding:88px 0}.sec-head{text-align:center;max-width:720px;margin:0 auto 52px}.sec-head .kicker{display:inline-block;font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--pri);font-weight:700;margin-bottom:12px}.sec-head h2{font-size:clamp(26px,4vw,40px);line-height:1.25;margin-bottom:14px}.sec-head p{color:var(--mut);font-size:16px}.topbar{position:fixed;top:0;left:0;right:0;z-index:1000;transition:.3s;background:transparent}.topbar.scrolled{background:rgba(11,15,26,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.06);box-shadow:0 8px 30px rgba(0,0,0,.35)}.nav{display:flex;align-items:center;height:72px;gap:8px}.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;margin-right:20px}.logo img{width:38px;height:38px;border-radius:10px}.nav-menu{display:flex;align-items:center;gap:4px;flex:1}.nav-item{position:relative}.nav-link{display:flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--txt);cursor:pointer;transition:.2s}.nav-link:hover{color:var(--pri);background:rgba(91,124,255,.08)}.nav-link .caret{font-size:11px;transition:transform .25s;color:var(--mut)}.nav-item:hover .caret,.nav-item.open .caret{transform:rotate(180deg)}.dropdown{position:absolute;top:calc(100% + 10px);left:0;min-width:230px;background:#fff;color:#1a2233;border-radius:14px;box-shadow:var(--shadow);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;z-index:100}.nav-item:hover .dropdown,.nav-item.open .dropdown{opacity:1;visibility:visible;transform:translateY(0)}.dropdown a{display:block;padding:10px 14px;border-radius:9px;font-size:14px;color:#33405a;transition:.18s}.dropdown a:hover{background:#eef2ff;color:var(--pri)}.dropdown a small{display:block;color:#8a94ad;font-size:12px;margin-top:2px}.nav-actions{display:flex;align-items:center;gap:10px}.burger{display:none;background:transparent;border:none;color:var(--txt);cursor:pointer;width:42px;height:42px;border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px}.burger span{display:block;width:22px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.burger.active span:nth-child(2){opacity:0}.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.hero{position:relative;padding:150px 0 90px;overflow:hidden}.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(800px 500px at 20% 10%,rgba(91,124,255,.18),transparent 60%),radial-gradient(700px 500px at 85% 20%,rgba(138,92,255,.16),transparent 60%)}.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.hero h1{font-size:clamp(32px,5vw,54px);line-height:1.15;margin-bottom:20px;font-weight:800}.hero .sub{font-size:18px;color:var(--mut);margin-bottom:28px;max-width:520px}.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}.hero-stats{display:flex;gap:38px;flex-wrap:wrap}.stat{display:flex;flex-direction:column}.stat b{font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.stat span{font-size:13px;color:var(--mut)}.sim{position:relative;background:var(--card);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}.sim-window{background:var(--bg2);border-radius:16px;overflow:hidden;border:1px solid var(--line)}.sim-top{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line)}.sim-top .dot{width:10px;height:10px;border-radius:50%}.sim-top .d1{background:#f87171}.sim-top .d2{background:#fbbf24}.sim-top .d3{background:#34d399}.sim-top .name{margin-left:8px;font-size:12.5px;color:var(--mut)}.sim-body{height:380px;display:flex;flex-direction:column}.sim-chats{flex:1;padding:16px;overflow:hidden;display:flex;flex-direction:column;gap:10px}.msg{max-width:78%;padding:10px 14px;border-radius:14px;font-size:13.5px;line-height:1.5}.msg.in{align-self:flex-start;background:var(--card2);border-bottom-left-radius:4px}.msg.out{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:4px}.msg .lock{display:inline-flex;align-items:center;gap:4px;font-size:11px;margin-top:5px;color:var(--green)}.sim-input{display:flex;gap:10px;padding:12px;border-top:1px solid var(--line)}.sim-input input{flex:1;background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:10px 16px;color:var(--txt);font-size:13px;outline:none}.sim-input input:focus{border-color:var(--pri)}.sim-input button{background:var(--grad);border:none;color:#fff;width:42px;height:42px;border-radius:50%;cursor:pointer;font-size:18px;flex-shrink:0}.sim-badge{position:absolute;top:-14px;right:24px;background:var(--green);color:#052e22;font-size:12px;font-weight:700;padding:6px 14px;border-radius:999px;box-shadow:0 8px 20px rgba(52,211,153,.4)}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.step-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:32px 26px;transition:.25s;position:relative}.step-card:hover{transform:translateY(-6px);border-color:var(--pri);box-shadow:var(--shadow-sm)}.step-num{font-size:44px;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--pri);line-height:1;margin-bottom:18px}.step-card h3{font-size:19px;margin-bottom:10px}.step-card p{color:var(--mut);font-size:14.5px}.icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;background:linear-gradient(135deg,rgba(91,124,255,.18),rgba(138,92,255,.18));border:1px solid rgba(91,124,255,.25)}.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px 26px;transition:.25s}.feat-card:hover{transform:translateY(-6px);border-color:var(--pri);box-shadow:var(--shadow-sm)}.feat-card h3{font-size:18px;margin-bottom:10px}.feat-card p{color:var(--mut);font-size:14.5px}.data-block{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:40px;margin-bottom:32px}.data-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}.data-stats .stat b{font-size:32px}.node-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.node-card{background:var(--bg2);border:1px solid var(--line);border-radius:var(--r-sm);padding:20px 16px;text-align:center;transition:.22s;cursor:pointer}.node-card:hover{border-color:var(--pri);transform:translateY(-4px)}.node-card .flag{font-size:28px;margin-bottom:8px}.node-card h4{font-size:15px;margin-bottom:3px}.node-card span{font-size:12.5px;color:var(--mut)}.node-card .ms{display:inline-block;margin-top:8px;font-size:11.5px;color:var(--green);background:rgba(52,211,153,.12);padding:2px 10px;border-radius:999px}.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.scene-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:.25s}.scene-card:hover{border-color:var(--pri);transform:translateY(-6px)}.scene-card h3{font-size:18px;margin-bottom:10px}.scene-card p{color:var(--mut);font-size:14.5px}.tech-tags{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}.tech-tag{background:var(--card);border:1px solid var(--line);padding:14px 24px;border-radius:999px;font-size:15px;font-weight:600;transition:.22s}.tech-tag:hover{border-color:var(--pri);background:linear-gradient(135deg,rgba(91,124,255,.15),rgba(138,92,255,.15));transform:translateY(-3px)}.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}.price-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:36px 30px;display:flex;flex-direction:column;position:relative;transition:.25s}.price-card:hover{transform:translateY(-6px)}.price-card.hot{border:2px solid var(--pri);background:linear-gradient(180deg,rgba(91,124,255,.1),var(--card));box-shadow:0 20px 50px rgba(91,124,255,.25)}.price-card .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:5px 16px;border-radius:999px}.price-card h3{font-size:18px;margin-bottom:6px}.price-card .desc{color:var(--mut);font-size:13.5px;margin-bottom:20px}.price{font-size:42px;font-weight:800;margin-bottom:4px}.price span{font-size:15px;color:var(--mut);font-weight:500}.price-card ul{flex:1;margin:24px 0;display:flex;flex-direction:column;gap:12px}.price-card ul li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--mut)}.price-card ul li::before{content:"✓";color:var(--green);font-weight:700;flex-shrink:0}.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:16px}.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;background:transparent;border:none;color:var(--txt);font-size:16px;font-weight:600;cursor:pointer;text-align:left}.faq-q .ic{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:rgba(91,124,255,.15);display:flex;align-items:center;justify-content:center;color:var(--pri);transition:.3s}.faq-item.open .faq-q .ic{transform:rotate(45deg)}.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}.faq-a .inner{padding:0 24px 22px;color:var(--mut);font-size:14.5px}.faq-a ol{padding-left:20px;margin-top:10px;display:flex;flex-direction:column;gap:8px}.faq-a ol li{padding-left:4px}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.25s}.news-card:hover{transform:translateY(-6px);border-color:var(--pri);box-shadow:var(--shadow-sm)}.news-card .thumb{height:190px;overflow:hidden;background:var(--bg2)}.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}.news-card:hover .thumb img{transform:scale(1.06)}.news-card .body{padding:20px}.news-card .meta{display:flex;gap:14px;font-size:12px;color:var(--mut2);margin-bottom:10px}.news-card h3{font-size:16.5px;margin-bottom:10px;line-height:1.4}.news-card p{color:var(--mut);font-size:13.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.testi-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px}.testi-card .stars{color:var(--amber);font-size:16px;margin-bottom:14px;letter-spacing:2px}.testi-card p{color:var(--mut);font-size:14.5px;margin-bottom:20px;font-style:italic}.testi-card .who{display:flex;align-items:center;gap:12px}.testi-card .av{width:44px;height:44px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff}.testi-card .who b{display:block;font-size:14.5px}.testi-card .who span{font-size:12.5px;color:var(--mut2)}.cta{position:relative;background:var(--grad);border-radius:28px;padding:70px 40px;text-align:center;overflow:hidden}.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 260px at 50% 0%,rgba(255,255,255,.22),transparent 70%)}.cta h2{position:relative;font-size:clamp(26px,4vw,38px);margin-bottom:14px;color:#fff}.cta p{position:relative;color:rgba(255,255,255,.9);margin-bottom:28px;font-size:16px}.cta .btn{position:relative}.footer{background:var(--bg2);border-top:1px solid var(--line);padding:64px 0 0}.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px;padding-bottom:44px}.foot-brand p{color:var(--mut);font-size:14px;margin:16px 0 22px;max-width:300px}.foot-col h4{font-size:15px;margin-bottom:18px}.foot-col ul{display:flex;flex-direction:column;gap:12px}.foot-col ul a{color:var(--mut);font-size:14px;transition:.2s}.foot-col ul a:hover{color:var(--pri)}.foot-bottom{border-top:1px solid var(--line);padding:22px 0;text-align:center;color:var(--mut2);font-size:13px}.page-hero{position:relative;padding:150px 0 60px;overflow:hidden}.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 400px at 50% 0%,rgba(91,124,255,.16),transparent 65%)}.page-hero h1{position:relative;font-size:clamp(28px,4.5vw,46px);margin-bottom:14px}.page-hero p{position:relative;color:var(--mut);font-size:17px;max-width:680px}.crumb{position:relative;display:flex;gap:8px;align-items:center;font-size:13.5px;color:var(--mut2);margin-bottom:18px}.crumb a:hover{color:var(--pri)}.dl-ver{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.ver-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px;display:flex;flex-direction:column}.ver-card h3{font-size:19px;margin-bottom:4px}.ver-card .size{color:var(--mut);font-size:13.5px;margin-bottom:18px}.ver-card ul{flex:1;margin:18px 0;display:flex;flex-direction:column;gap:10px}.ver-card ul li{font-size:14px;color:var(--mut);display:flex;gap:8px;align-items:flex-start}.ver-card ul li::before{content:"✓";color:var(--green);font-weight:700}.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.sys-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);padding:22px}.sys-item h4{font-size:15.5px;margin-bottom:8px}.sys-item p{color:var(--mut);font-size:13.5px}.article{max-width:820px;margin:0 auto}.article .cover{border-radius:var(--r);overflow:hidden;margin-bottom:32px;box-shadow:var(--shadow)}.article .cover img{width:100%}.article .meta{display:flex;gap:18px;color:var(--mut2);font-size:13.5px;margin-bottom:10px}.article h1{font-size:clamp(24px,3.6vw,36px);line-height:1.3;margin-bottom:20px}.article h2{font-size:22px;margin:36px 0 14px}.article p{color:var(--mut);font-size:16px;margin-bottom:18px}.article .body-img{border-radius:var(--r-sm);overflow:hidden;margin:26px 0;box-shadow:var(--shadow-sm)}.article .body-img img{width:100%}.article blockquote{border-left:3px solid var(--pri);padding:14px 20px;margin:26px 0;background:var(--card);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--mut);font-style:italic}.prevnext{display:flex;justify-content:space-between;gap:16px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}.prevnext a{flex:1;padding:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);font-size:14px;transition:.2s}.prevnext a:hover{border-color:var(--pri)}.prevnext a span{display:block;font-size:12px;color:var(--mut2);margin-bottom:4px}.sitemap-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.sitemap-col{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px}.sitemap-col h3{font-size:17px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}.sitemap-col ul{display:flex;flex-direction:column;gap:10px}.sitemap-col ul a{color:var(--mut);font-size:14.5px;display:flex;gap:8px;align-items:center}.sitemap-col ul a::before{content:"→";color:var(--pri)}.sitemap-col ul a:hover{color:var(--pri)}.n404{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;flex-direction:column;padding:40px 20px}.n404 h1{font-size:clamp(80px,20vw,180px);font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.n404 p{color:var(--mut);font-size:18px;margin:16px 0 30px}.countdown{color:var(--pri);font-weight:700}.fade-up{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}.fade-up.show{opacity:1;transform:none}.banner{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 30px;display:flex;align-items:center;gap:16px;margin-bottom:24px}.banner .icon{font-size:26px;margin:0;flex-shrink:0}.banner p{color:var(--mut);font-size:14.5px}.banner b{color:var(--txt)}@media(max-width:992px){.burger{display:flex}.nav-menu{position:fixed;top:72px;left:0;right:0;background:rgba(11,15,26,.98);backdrop-filter:blur(14px);flex-direction:column;align-items:stretch;padding:16px;gap:4px;border-bottom:1px solid var(--line);transform:translateY(-120%);transition:.35s;max-height:calc(100vh - 72px);overflow-y:auto}.nav-menu.show{transform:translateY(0)}.nav-item{width:100%}.nav-link{width:100%;justify-content:space-between;padding:14px}.dropdown{position:static;opacity:1;visibility:visible;transform:none;background:var(--bg2);box-shadow:none;margin:4px 0;display:none}.nav-item.open .dropdown{display:block}.dropdown a{color:var(--txt)}.dropdown a small{color:var(--mut2)}.nav-actions{display:none}.hero-grid,.foot-grid{grid-template-columns:1fr}.hero{padding-top:130px}.hero-grid{gap:40px}.feat-grid,.scene-grid,.pricing-grid,.dl-ver,.testi-grid,.news-grid,.node-grid,.steps-grid,.sys-grid{grid-template-columns:repeat(2,1fr)}.data-stats{grid-template-columns:repeat(2,1fr)}.sitemap-list{grid-template-columns:1fr}}@media(max-width:768px){.sec{padding:64px 0}.feat-grid,.scene-grid,.pricing-grid,.dl-ver,.testi-grid,.news-grid,.node-grid,.steps-grid,.sys-grid{grid-template-columns:1fr}.hero-btns{flex-direction:column}.btn{width:100%}.sim-body{height:320px}.data-stats{grid-template-columns:repeat(2,1fr);gap:16px}.data-block{padding:28px}.cta{padding:48px 22px}}@media(max-width:480px){.hero-stats{gap:24px}.price{font-size:34px}.node-grid{grid-template-columns:repeat(2,1fr)}.nav{height:64px}.nav-menu{top:64px}.topbar .logo img{width:32px;height:32px}}