*,*::before,*::after{box-sizing:border-box}
:root{--brand:#4f46e5;--brand2:#06b6d4;--accent:#f59e0b;--ink:#0f172a;--muted:#5b6b83;--line:#e5eaf2;--bg:#f5f8fd;--card:#fff;--grad:linear-gradient(135deg,#4f46e5,#06b6d4);--shadow:0 10px 30px rgba(15,23,42,.08);--shadow-h:0 18px 44px rgba(37,99,235,.18);--radius:16px;--maxw:1180px}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{letter-spacing:-.02em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.center{text-align:center}
.muted{color:var(--muted)}
.nav{position:fixed;top:0;left:0;right:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 1px 0 rgba(15,23,42,.06);transition:background .3s,box-shadow .3s}
.nav.on{background:rgba(255,255,255,.97);box-shadow:0 10px 30px rgba(15,23,42,.1)}
.nav-in{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.brand img{width:36px;height:36px;border-radius:10px}
.brand b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-toggle-cb,.grp-cb{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:11px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;background:#fff}
.burger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.menu{margin-left:auto;display:flex;align-items:center;gap:2px}
.menu-a{position:relative;display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;color:#334155;font-weight:600;font-size:15px;cursor:pointer;transition:.2s}
.menu-a:hover{color:var(--brand);background:#eef2ff}
.menu-grp{position:relative}
.menu-grp>.menu-a::after{content:"▾";font-size:11px;transition:transform .25s}
.menu-grp:hover>.menu-a::after{transform:rotate(180deg)}
.drop{position:absolute;top:calc(100% + 10px);left:0;min-width:214px;background:#fff;border-radius:14px;box-shadow:0 22px 54px rgba(15,23,42,.18);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:.24s}
.menu-grp:hover .drop{opacity:1;visibility:visible;transform:none}
.drop a{display:block;padding:10px 12px;border-radius:9px;color:#334155;font-size:14px;font-weight:500}
.drop a:hover{background:#eef2ff;color:var(--brand)}
.nav-cta{margin-left:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:12px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.25s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(79,70,229,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(79,70,229,.42)}
.btn-ghost{background:#fff;border-color:#d5deec;color:#1e293b}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 12px 28px rgba(2,6,23,.18)}
.btn-light:hover{transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:17px}
.btn-block{width:100%}
.section{padding:76px 0}
.alt{background:#fff}
.sec-head{text-align:center;max-width:730px;margin:0 auto 44px}
.sec-head h2{font-size:clamp(24px,3vw,36px);margin:0 0 12px}
.sec-head p{color:var(--muted);font-size:16px;margin:0}
.eyebrow{display:inline-block;color:var(--brand);font-weight:800;font-size:13px;letter-spacing:1.4px;text-transform:uppercase;margin-bottom:8px}
.hero{position:relative;padding:126px 0 68px;overflow:hidden;background:radial-gradient(1000px 520px at 82% -12%,rgba(6,182,212,.16),transparent),radial-gradient(920px 500px at 8% 0,rgba(79,70,229,.14),transparent)}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:#eef2ff;color:var(--brand);font-size:13px;font-weight:700}
.hero h1{font-size:clamp(30px,4.3vw,52px);line-height:1.14;margin:18px 0 14px}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:17px;color:var(--muted);max-width:560px}
.hero-btns{display:flex;gap:14px;margin:26px 0 30px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.stat b{display:block;font-size:26px;line-height:1.25;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:var(--muted)}
.demo{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:20px}
.demo-top{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700}
.demo-top .dot{width:9px;height:9px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.18);transition:.3s}
.demo.off .demo-top .dot{background:#94a3b8;box-shadow:0 0 0 4px rgba(148,163,184,.18)}
.demo-top em{margin-left:auto;font-style:normal;color:var(--muted);font-weight:600}
.gauge{position:relative;height:186px;margin:12px 0 4px;display:flex;align-items:center;justify-content:center}
.gauge svg{width:100%;max-width:290px}
.gauge .track{fill:none;stroke:#e8eefb;stroke-width:14;stroke-linecap:round}
.gauge .arc{fill:none;stroke:url(#gg);stroke-width:14;stroke-linecap:round;stroke-dasharray:236;transition:stroke-dashoffset 1s ease}
.gauge-val{position:absolute;text-align:center;top:56%}
.gauge-val b{display:block;font-size:34px;line-height:1}
.gauge-val small{color:var(--muted);font-size:12px}
.demo-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}
.demo-stats>div{background:#f6f9ff;border-radius:12px;padding:10px;text-align:center}
.demo-stats b{display:block;font-size:17px}
.demo-stats span{font-size:12px;color:var(--muted)}
.demo-nodes{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:6px 0 14px}
.node{border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 10px;font-size:13px;text-align:left;cursor:pointer;transition:.2s;color:#334155}
.node:hover{border-color:var(--brand);color:var(--brand)}
.node.on{background:var(--grad);color:#fff;border-color:transparent}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.28s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:#dbe6ff}
.ico{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;font-size:24px;background:#eef2ff;margin-bottom:14px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.num{display:inline-block;font-weight:800;color:var(--brand)}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:.28s}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.step .sn{width:42px;height:42px;border-radius:12px;background:var(--grad);color:#fff;font-weight:800;display:grid;place-items:center;margin-bottom:14px}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px 26px;display:flex;flex-direction:column;transition:.28s}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.plan.pop{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;box-shadow:0 24px 60px rgba(79,70,229,.22)}
.badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;padding:5px 16px;border-radius:999px;font-size:12px;font-weight:700;white-space:nowrap}
.plan h3{margin:0 0 6px;font-size:19px}
.plan .price{font-size:40px;font-weight:800;line-height:1.1}
.plan .price small{font-size:14px;font-weight:600;color:var(--muted)}
.plan ul{list-style:none;padding:0;margin:18px 0;display:grid;gap:10px;font-size:14.5px;color:#334155}
.plan li{padding-left:24px;position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:800}
.plan .btn{margin-top:auto}
.dl-card{display:flex;flex-direction:column}
.dl-card .btn{margin-top:auto}
.dl-list{list-style:none;padding:0;margin:14px 0;display:grid;gap:10px;font-size:14.5px;color:#334155}
.dl-list li{padding-left:24px;position:relative}
.dl-list li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:800}
.faq{max-width:900px;margin:0 auto;display:grid;gap:12px}
details.qa{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 20px;transition:.25s}
details.qa[open]{box-shadow:var(--shadow);border-color:#dbe6ff}
details.qa summary{list-style:none;cursor:pointer;padding:16px 0;font-weight:700;font-size:16px;display:flex;justify-content:space-between;gap:16px;align-items:center}
details.qa summary::-webkit-details-marker{display:none}
details.qa summary::after{content:"＋";color:var(--brand);font-size:20px;font-weight:800}
details.qa[open] summary::after{content:"－"}
details.qa .ans{padding:0 0 18px;color:var(--muted);font-size:15px}
details.qa .ans ol,details.qa .ans ul{margin:8px 0 0;padding-left:20px}
.tcard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:.28s}
.tcard:hover{transform:translateY(-5px);box-shadow:var(--shadow-h)}
.stars{color:var(--accent);letter-spacing:2px;font-size:15px}
.tcard p{color:#334155;font-size:14.5px;margin:8px 0 0}
.tby{display:flex;align-items:center;gap:10px;margin-top:14px}
.avat{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;flex:0 0 40px}
.tby b{display:block;font-size:14.5px}
.tby span{font-size:12.5px;color:var(--muted)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ncard{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.28s;display:flex;flex-direction:column}
.ncard:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:#dbe6ff}
.ncard img{width:100%;aspect-ratio:16/9;object-fit:cover}
.ncard .nb{padding:18px;display:flex;flex-direction:column;height:100%}
.ncard .meta{display:flex;gap:10px;font-size:12.5px;color:var(--muted)}
.ncard h3{font-size:17px;line-height:1.45;margin:8px 0}
.ncard p{font-size:14px;color:var(--muted);margin:0 0 14px}
.ncard .more{margin-top:auto;color:var(--brand);font-weight:700;font-size:14px}
.cta{background:var(--grad);color:#fff;border-radius:24px;padding:54px 40px;text-align:center;box-shadow:0 26px 60px rgba(79,70,229,.28)}
.cta h2{font-size:clamp(24px,3vw,34px);margin:0 0 12px}
.cta p{margin:0 0 24px;opacity:.94}
.footer{background:#0b1224;color:#c7d2e4;padding:60px 0 26px}
.footer a{color:#9fb0c9}
.footer a:hover{color:#fff}
.fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.fbrand{margin-bottom:12px}
.fbrand b{color:#fff;background:none;-webkit-text-fill-color:#fff}
.footer h4{color:#fff;font-size:15px;margin:0 0 14px}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:9px;font-size:14px}
.footer .fdesc{font-size:14px;color:#8ea1bd;max-width:330px}
.fbot{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px}
.fsoc{display:flex;gap:16px;flex-wrap:wrap}
.totop{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:20px;box-shadow:0 12px 30px rgba(79,70,229,.42);z-index:70;opacity:0;visibility:hidden;transition:.3s}
.totop.on{opacity:1;visibility:visible}
.totop:hover{transform:translateY(-3px)}
.page{max-width:920px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:44px}
.page h1{font-size:clamp(24px,3.2vw,34px);margin:0 0 8px}
.page h2{font-size:21px;margin:32px 0 10px}
.page h3{font-size:17px;margin:22px 0 8px}
.page p,.page li{color:#2b3a52;font-size:15.5px}
.page ul,.page ol{padding-left:22px}
.pagehead{padding:130px 0 0}
.pagehead .wrap{padding-bottom:6px}
.crumbs{font-size:13.5px;color:var(--muted);margin-bottom:12px}
.crumbs a:hover{color:var(--brand)}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.post{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px}
.post h1{font-size:clamp(24px,3.2vw,35px);margin:6px 0 14px;line-height:1.3}
.pmeta{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:13.5px;margin-bottom:20px}
.post img.cover{width:100%;border-radius:14px;margin:6px 0 24px}
.post h2{font-size:22px;margin:34px 0 12px;scroll-margin-top:92px}
.post p{color:#2b3a52;font-size:16px;margin:0 0 16px}
.post figure{margin:24px 0}
.post figure img{border-radius:12px;width:100%}
.post figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.quote{border-left:4px solid var(--brand);background:#f6f9ff;padding:14px 18px;border-radius:0 12px 12px 0;color:#334155;font-size:15.5px;margin:0 0 18px}
.postnav{display:flex;justify-content:space-between;gap:14px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line);flex-wrap:wrap}
.postnav a{font-size:14px;color:var(--brand);font-weight:700}
.related{margin-top:32px}
.related h3{font-size:19px;margin:0 0 16px}
.side{position:sticky;top:92px;display:grid;gap:18px}
.scard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 6px 20px rgba(15,23,42,.05)}
.scard h4{margin:0 0 14px;font-size:15px;padding-left:12px;position:relative}
.scard h4::before{content:"";position:absolute;left:0;top:2px;bottom:2px;width:4px;border-radius:3px;background:var(--grad)}
.toc{list-style:none;padding:0;margin:0;border-left:2px solid var(--line)}
.toc a{position:relative;display:block;padding:7px 0 7px 18px;font-size:13.5px;color:#64748b;transition:color .2s}
.toc a::before{content:"";position:absolute;left:-6px;top:50%;transform:translateY(-50%);width:9px;height:9px;border-radius:50%;background:#cbd5e1;border:2px solid #fff;transition:.2s}
.toc a:hover{color:var(--brand)}
.toc a.on{color:var(--brand);font-weight:700}
.toc a.on::before{background:var(--brand)}
.hot{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.hot li{display:flex;gap:12px;align-items:flex-start}
.hot .rk{flex:0 0 22px;height:22px;border-radius:6px;background:#94a3b8;color:#fff;font-size:12px;font-weight:700;display:grid;place-items:center;transition:.2s}
.hot li:nth-child(1) .rk{background:var(--grad)}
.hot li:nth-child(2) .rk{background:linear-gradient(135deg,#f97316,#fb923c)}
.hot li:nth-child(3) .rk{background:linear-gradient(135deg,#eab308,#facc15)}
.hot li:hover .rk{transform:scale(1.15)}
.hot a{font-size:13.5px;color:#334155}
.hot a:hover{color:var(--brand)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags a{font-size:12.5px;padding:6px 12px;border:1px solid var(--line);border-radius:999px;color:#475569;transition:.2s}
.tags a:hover{border-color:var(--brand);color:var(--brand)}
.cmts{margin-top:36px}
.cmts h3{font-size:19px;margin:0 0 6px}
.cmt{display:flex;gap:12px;padding:16px 0;border-top:1px solid var(--line)}
.cmt .avc{font-weight:700;font-size:14.5px}
.cmt time{color:var(--muted);font-size:12.5px;margin-left:8px;font-weight:400}
.cmt p{margin:4px 0 0;font-size:14.5px;color:#334155}
.note{background:#fff8e8;border:1px dashed #f0c15a;border-radius:14px;padding:16px 18px;color:#8a5a00;font-size:14px}
.err{text-align:center;padding:150px 0 90px}
.err .code{font-size:90px;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.err h1{font-size:26px;margin:10px 0}
.mapblock{margin:26px 0}
.mapblock h2{font-size:20px;margin:0 0 10px}
.mapblock ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.mapblock a{color:var(--brand)}
.js .reveal{opacity:0;transform:translateY(20px)}
.js .reveal.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .reveal{opacity:1;transform:none;transition:none}}
@media (max-width:992px){
.hero-in{grid-template-columns:1fr;gap:34px}
.hero{padding:112px 0 56px}
.g4{grid-template-columns:repeat(2,1fr)}
.layout{grid-template-columns:1fr}
.side{position:static}
.fgrid{grid-template-columns:1fr 1fr}
.burger{display:flex}
.nav-cta{display:none}
.menu{position:fixed;top:70px;left:0;right:0;margin:0;background:#fff;flex-direction:column;align-items:stretch;gap:2px;padding:14px;box-shadow:0 24px 44px rgba(15,23,42,.16);max-height:calc(100vh - 70px);overflow:auto;display:none}
.nav-toggle-cb:checked~.menu{display:flex}
.menu-grp{width:100%}
.menu-grp>.menu-a{width:100%;justify-content:space-between;padding:12px 14px}
.drop{position:static;display:none;opacity:1;visibility:visible;transform:none;box-shadow:none;padding:2px 0 8px 12px;margin-left:6px;border-left:2px solid var(--line);border-radius:0;min-width:0}
.grp-cb:checked~.drop{display:block}
.menu-grp:hover .drop{opacity:1;visibility:visible;transform:none}
}
@media (max-width:768px){
.g3{grid-template-columns:repeat(2,1fr)}
#versions .grid{grid-template-columns:1fr}
.news-grid{grid-template-columns:1fr}
.price-grid{grid-template-columns:1fr}
.section{padding:56px 0}
.post,.page{padding:26px}
.cta{padding:40px 22px}
}
@media (max-width:480px){
.g2,.g3,.g4{grid-template-columns:1fr}
.news-grid{grid-template-columns:1fr}
.hero-btns{flex-direction:column}
.hero-btns .btn{width:100%}
.stats{grid-template-columns:1fr 1fr}
.demo-nodes{grid-template-columns:1fr}
.fgrid{grid-template-columns:1fr}
.fbot{flex-direction:column}
}