*{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;color:#1f2430;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{text-decoration:none;color:inherit}ul,ol{list-style:none}button{font-family:inherit;cursor:pointer;border:none;background:none}:root{--brand:#4f6ef7;--brand2:#7c3aed;--accent:#22d3ee;--dark:#0e1220;--ink:#1f2430;--muted:#6b7280;--line:#e8ecf4;--bg:#f6f8fd;--grad:linear-gradient(135deg,#4f6ef7,#7c3aed);--grad2:linear-gradient(135deg,#22d3ee,#4f6ef7);--shadow:0 10px 40px rgba(79,110,247,.14);--radius:16px}.wrap{max-width:1200px;margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:50px;font-weight:600;font-size:15px;transition:.25s;white-space:nowrap}.btn-grad{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(79,110,247,.32)}.btn-grad:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(79,110,247,.42)}.btn-ghost{background:transparent;color:var(--brand);border:1.5px solid var(--brand)}.btn-ghost:hover{background:rgba(79,110,247,.08)}.btn-light{background:#fff;color:var(--brand)}.btn-light:hover{transform:translateY(-2px)}.sec{padding:88px 0}.sec-tag{display:inline-block;padding:6px 16px;border-radius:30px;background:rgba(79,110,247,.1);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:16px}.sec-title{font-size:36px;font-weight:800;line-height:1.25;margin-bottom:14px}.sec-sub{color:var(--muted);font-size:16px;max-width:640px}.sec-head{text-align:center;margin-bottom:48px}.sec-head .sec-sub{margin:0 auto}.grid{display:grid;gap:24px}
/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:.3s;background:transparent}.nav.scrolled{background:rgba(14,18,32,.92);backdrop-filter:blur(12px);box-shadow:0 4px 20px rgba(0,0,0,.2)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff}.logo img{height:38px;width:38px;border-radius:9px}.logo b{color:#fff}.menu{display:flex;align-items:center;gap:6px}.menu>li{position:relative}.menu>li>a{display:flex;align-items:center;gap:5px;padding:10px 16px;color:#fff;font-weight:500;font-size:15px;border-radius:8px;transition:.2s}.menu>li>a:hover{background:rgba(255,255,255,.12)}.menu>li>a .arr{font-size:11px;transition:.25s;transform:rotate(0)}.menu>li:hover>a .arr{transform:rotate(180deg)}.drop{position:absolute;top:100%;left:0;min-width:180px;background:#fff;border-radius:14px;box-shadow:0 16px 40px rgba(0,0,0,.18);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s}.menu>li:hover .drop{opacity:1;visibility:visible;transform:translateY(0)}.drop a{display:block;padding:10px 14px;border-radius:9px;color:#333;font-size:14px;transition:.18s}.drop a:hover{background:var(--bg);color:var(--brand)}.nav-cta{display:flex;align-items:center;gap:12px}.nav-cta .btn{padding:10px 20px;font-size:14px}.nav .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55)}.nav .btn-ghost:hover{background:rgba(255,255,255,.12)}.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}.burger span{width:24px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
/* hero */
.hero{position:relative;background:radial-gradient(1200px 600px at 80% -10%,#7c3aed55,transparent),radial-gradient(900px 500px at 10% 10%,#22d3ee33,transparent),linear-gradient(160deg,#0e1220,#1b2350 55%,#101735);color:#fff;padding:150px 0 110px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.hero h1{font-size:46px;font-weight:900;line-height:1.18;margin-bottom:20px}.hero h1 .hl{background:var(--grad2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:18px;color:#c9d2ee;margin-bottom:30px;max-width:520px}.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}.stats{display:flex;gap:36px;flex-wrap:wrap}.stat b{font-size:30px;font-weight:800;display:block;background:var(--grad2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.stat span{font-size:13px;color:#aab4d8}
/* demo */
.demo{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:26px;backdrop-filter:blur(8px);box-shadow:0 30px 60px rgba(0,0,0,.35)}.demo-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.demo-top .dot{display:flex;gap:6px}.demo-top .dot i{width:11px;height:11px;border-radius:50%}.demo-top .dot i:nth-child(1){background:#ff5f57}.demo-top .dot i:nth-child(2){background:#febc2e}.demo-top .dot i:nth-child(3){background:#28c840}.demo-status{font-size:13px;color:#c9d2ee}.gauge{position:relative;width:210px;height:210px;margin:0 auto 22px}.gauge svg{transform:rotate(-90deg)}.gauge .ring{fill:none;stroke:rgba(255,255,255,.14);stroke-width:12}.gauge .val{fill:none;stroke:url(#gg);stroke-width:12;stroke-linecap:round;transition:stroke-dashoffset .6s}.gauge-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.gauge-center b{font-size:42px;font-weight:800}.gauge-center span{font-size:12px;color:#aab4d8}.demo-stats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;text-align:center;margin-bottom:22px}.demo-stats .ds{background:rgba(255,255,255,.07);border-radius:12px;padding:12px 8px}.demo-stats b{display:block;font-size:20px}.demo-stats span{font-size:12px;color:#aab4d8}.demo-ctl{display:flex;gap:10px;flex-wrap:wrap}.demo-ctl select,.demo-ctl button{flex:1;min-width:100px;padding:11px 12px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:#fff;font-size:14px}.demo-ctl button.connect{background:var(--grad);border:none;font-weight:700}.demo-ctl button.toggle.on{background:var(--accent);border:none;color:#06131a;font-weight:700}
/* features */
.features{background:#fff}.feature{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}.feature .ic{width:52px;height:52px;border-radius:14px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}.feature h3{font-size:19px;margin-bottom:10px}.feature p{color:var(--muted);font-size:14.5px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
/* nodes */
.nodes{background:var(--bg)}.node{background:#fff;border-radius:var(--radius);padding:22px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 16px rgba(0,0,0,.05);transition:.25s}.node:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.node .flag{width:46px;height:46px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.node h4{font-size:16px;margin-bottom:3px}.node p{font-size:13px;color:var(--muted)}.node .ping{margin-left:auto;text-align:right}.node .ping b{color:#16a34a;font-size:18px}.node .ping span{font-size:12px;color:var(--muted)}
/* scenario */
.scenario{background:linear-gradient(160deg,#0e1220,#1b2350);color:#fff}.scenario .sec-sub{color:#aab4d8}.scenario .sec-title{color:#fff}.scen{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px;transition:.25s}.scen:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}.scen .ic{font-size:30px;margin-bottom:14px}.scen h3{font-size:18px;margin-bottom:10px}.scen p{color:#c9d2ee;font-size:14px}
/* pricing */
.pricing{background:#fff}.price{background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:34px;text-align:center;transition:.25s;position:relative}.price:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.price.hot{background:var(--grad);color:#fff;border:none;transform:scale(1.03)}.price.hot:hover{transform:scale(1.03) translateY(-6px)}.price .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:#ff8a00;color:#fff;padding:5px 16px;border-radius:30px;font-size:12px;font-weight:700}.price .pname{font-size:18px;font-weight:700;margin-bottom:14px}.price .pnum{font-size:44px;font-weight:900;margin-bottom:6px}.price .pnum small{font-size:16px;font-weight:500}.price .pdesc{font-size:13px;margin-bottom:22px;opacity:.8}.price ul{text-align:left;margin-bottom:26px}.price ul li{padding:9px 0;border-bottom:1px dashed rgba(0,0,0,.1);font-size:14px;display:flex;gap:8px}.price.hot ul li{border-color:rgba(255,255,255,.25)}.price ul li:before{content:"✓";color:#16a34a;font-weight:700}.price.hot ul li:before{color:#b7ffd0}.price .btn{width:100%}.price.hot .btn{background:#fff;color:var(--brand)}
/* faq */
.faq{background:var(--bg)}.faq-item{background:#fff;border-radius:14px;margin-bottom:14px;overflow:hidden;box-shadow:0 3px 12px rgba(0,0,0,.04)}.faq-q{width:100%;text-align:left;padding:20px 24px;font-size:16px;font-weight:700;display:flex;justify-content:space-between;align-items:center;color:var(--ink)}.faq-q .arr{transition:.25s;color:var(--brand);font-size:20px}.faq-item.open .faq-q .arr{transform:rotate(45deg)}.faq-a{max-height:0;overflow:hidden;transition:.3s}.faq-item.open .faq-a{max-height:600px}.faq-a p{padding:0 24px 20px;color:var(--muted);font-size:14.5px}
/* testimonials */
.testi{background:linear-gradient(160deg,#0e1220,#1b2350);color:#fff}.testi .sec-title{color:#fff}.testi .sec-sub{color:#aab4d8}.tcard{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px}.tcard .stars{color:#fbbf24;margin-bottom:14px;letter-spacing:2px}.tcard p{color:#e5eafb;font-size:15px;margin-bottom:18px}.tcard .user{display:flex;align-items:center;gap:12px}.tcard .av{width:44px;height:44px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}.tcard .user b{display:block;font-size:15px}.tcard .user span{font-size:12px;color:#aab4d8}
/* news */
.news{background:#fff}.ncard{background:var(--bg);border-radius:var(--radius);overflow:hidden;transition:.25s;border:1px solid var(--line)}.ncard:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.ncard img{width:100%;height:180px;object-fit:cover}.ncard .nc{padding:20px}.ncard .nc h3{font-size:16px;margin-bottom:10px;line-height:1.4}.ncard .nc h3 a:hover{color:var(--brand)}.ncard .nc .date{font-size:12px;color:var(--muted)}.ncard .nc .cat{display:inline-block;font-size:12px;color:var(--brand);background:rgba(79,110,247,.1);padding:3px 10px;border-radius:20px;margin-bottom:10px}
/* cta */
.cta{background:var(--grad);color:#fff;padding:80px 0;text-align:center}.cta h2{font-size:36px;font-weight:800;margin-bottom:16px}.cta p{opacity:.9;margin-bottom:30px}.cta .btn{background:#fff;color:var(--brand);font-size:16px;padding:15px 36px}
/* footer */
.footer{background:#0c0f1d;color:#aab4d8;padding:64px 0 24px}.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}.f-grid h4{color:#fff;font-size:16px;margin-bottom:18px}.f-grid a{display:block;padding:6px 0;font-size:14px;color:#aab4d8;transition:.2s}.f-grid a:hover{color:var(--accent)}.f-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}.f-logo img{height:36px;width:36px;border-radius:8px}.f-logo b{color:#fff;font-size:18px}.f-about{font-size:14px;line-height:1.8}.f-copy{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:13px}
/* page hero (sub) */
.phero{background:radial-gradient(1000px 500px at 80% -10%,#7c3aed55,transparent),linear-gradient(160deg,#0e1220,#1b2350);color:#fff;padding:150px 0 70px;text-align:center}.phero h1{font-size:40px;font-weight:900;margin-bottom:14px}.phero p{color:#c9d2ee;max-width:640px;margin:0 auto}.crumb{display:flex;justify-content:center;gap:8px;font-size:13px;color:#aab4d8;margin-top:16px}.crumb a{color:#aab4d8}.crumb a:hover{color:#fff}.crumb span{color:#fff}
/* download */
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}.dl-stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:28px}.dl-stats b{font-size:26px;font-weight:800;color:var(--brand);display:block}.dl-stats span{font-size:13px;color:var(--muted)}.ver{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:flex;gap:24px;align-items:center;margin-bottom:20px;transition:.25s}.ver:hover{box-shadow:var(--shadow)}.ver .vinfo{flex:1}.ver .vinfo h3{font-size:18px;margin-bottom:6px}.ver .vinfo p{font-size:13px;color:var(--muted)}.ver .vinfo ul{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.ver .vinfo ul li{font-size:12px;background:#fff;border:1px solid var(--line);padding:4px 12px;border-radius:20px}.sys{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.sys .s{border:1px solid var(--line);border-radius:var(--radius);padding:24px}.sys .s b{display:block;font-size:15px;margin-bottom:8px;color:var(--brand)}.sys .s p{font-size:14px;color:var(--muted)}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.step{text-align:center}.step .num{width:60px;height:60px;border-radius:50%;background:var(--grad);color:#fff;font-size:24px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}.step h3{font-size:16px;margin-bottom:8px}.step p{font-size:13px;color:var(--muted)}
/* article */
.art-wrap{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}.art{background:#fff}.art h1{font-size:30px;font-weight:800;line-height:1.4;margin:18px 0}.art .meta{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:24px}.art img.cover{width:100%;border-radius:var(--radius);margin-bottom:28px}.art .lead{font-size:17px;color:#333;font-weight:500;background:var(--bg);padding:20px 24px;border-left:4px solid var(--brand);border-radius:10px;margin-bottom:26px}.art h2{font-size:22px;font-weight:800;margin:30px 0 14px;padding-top:14px}.art p{font-size:16px;color:#333;margin-bottom:16px}.art img.bodyimg{width:100%;border-radius:12px;margin:22px 0}.art blockquote{border-left:4px solid var(--accent);background:var(--bg);padding:16px 20px;border-radius:10px;margin:20px 0;color:#444;font-style:italic}
/* sidebar */
.side{position:sticky;top:90px}.scard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:24px;box-shadow:0 4px 16px rgba(0,0,0,.05)}.scard .stitle{font-size:16px;font-weight:800;margin-bottom:18px;padding-left:12px;border-left:4px solid var(--brand);line-height:1.2}.toc{position:relative}.toc:before{content:"";position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:var(--line)}.toc a{display:flex;align-items:center;gap:12px;padding:8px 0;color:var(--muted);font-size:14px;position:relative;transition:.2s}.toc a:before{content:"";width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid var(--line);flex-shrink:0;z-index:1}.toc a.active{color:var(--brand);font-weight:700}.toc a.active:before{background:var(--brand);border-color:var(--brand)}.rank{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}.rank:last-child{border:none}.rank .rn{width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;color:#fff;flex-shrink:0}.rn-1{background:linear-gradient(135deg,#4f6ef7,#7c3aed)}.rn-2{background:linear-gradient(135deg,#ff8a00,#ff5f57)}.rn-3{background:linear-gradient(135deg,#fbbf24,#ff8a00)}.rn-x{background:#cbd5e1}.rank a{font-size:14px;color:#333}.rank a:hover{color:var(--brand)}.rank:hover .rn{transform:scale(1.12)}.tags{display:flex;flex-wrap:wrap;gap:10px}.tags a{font-size:13px;color:var(--brand);border:1px solid var(--line);padding:6px 14px;border-radius:30px;transition:.2s}.tags a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
/* comments */
.comments{background:#fff;border-radius:var(--radius);padding:32px;margin-top:32px}.comments h3{font-size:20px;margin-bottom:22px}.cmt{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}.cmt:last-child{border:none}.cmt .av{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}.cmt b{font-size:14px;display:block}.cmt .d{font-size:12px;color:var(--muted)}.cmt p{font-size:14px;color:#444;margin-top:6px}
/* pagination */
.pagnav{display:flex;justify-content:space-between;gap:16px;margin-top:32px}.pagnav a{flex:1;border:1px solid var(--line);border-radius:12px;padding:16px 20px;transition:.2s}.pagnav a:hover{border-color:var(--brand);background:var(--bg)}.pagnav span{font-size:12px;color:var(--muted);display:block}.pagnav b{font-size:14px;color:var(--ink)}
/* sitemap */
.smap-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}.smap-col h2{font-size:20px;margin-bottom:18px;padding-left:12px;border-left:4px solid var(--brand)}.smap-col a{display:block;padding:8px 0;color:#444;font-size:15px;border-bottom:1px dashed var(--line)}.smap-col a:hover{color:var(--brand)}.smap-col a:last-child{border:none}
/* 404 */
.e404{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:linear-gradient(160deg,#0e1220,#1b2350);color:#fff}.e404 h1{font-size:120px;font-weight:900;background:var(--grad2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}.e404 h2{font-size:28px;margin:16px 0}.e404 p{color:#aab4d8;margin-bottom:30px}
/* responsive */
@media(max-width:992px){.menu{position:fixed;top:72px;left:0;right:0;background:rgba(14,18,32,.98);flex-direction:column;align-items:stretch;padding:20px;gap:4px;transform:translateY(-140%);transition:.3s;max-height:calc(100vh - 72px);overflow-y:auto}.menu.open{transform:translateY(0)}.menu>li>a{color:#fff}.drop{position:static;opacity:1;visibility:visible;transform:none;background:rgba(255,255,255,.06);box-shadow:none;margin:4px 0 8px 12px;display:none}.menu>li.open .drop{display:block}.drop a{color:#c9d2ee}.burger{display:flex}.nav-cta .btn-login{display:none}.hero{padding:130px 0 80px}.hero-grid,.dl-grid{grid-template-columns:1fr;gap:40px}.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.art-wrap{grid-template-columns:1fr}.side{position:static}.sys{grid-template-columns:repeat(2,1fr)}.f-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:36px}.sec-title{font-size:30px}}
@media(max-width:768px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.sys{grid-template-columns:1fr}.f-grid{grid-template-columns:1fr}.hero h1{font-size:30px}.sec{padding:64px 0}.stats{gap:24px}.stat b{font-size:24px}.demo-stats{grid-template-columns:1fr}.phero h1{font-size:32px}.art h1{font-size:24px}.ver{flex-direction:column;text-align:center}}
@media(max-width:480px){.wrap{padding:0 16px}.hero h1{font-size:26px}.btn{padding:12px 22px;font-size:14px}.stats{flex-direction:column;gap:16px}.stat{display:flex;align-items:center;gap:10px}.stat b{font-size:22px}.steps{grid-template-columns:1fr}.sec-title{font-size:26px}.cta h2{font-size:28px}}