*{margin:0;padding:0;box-sizing:border-box}
:root{--brand:#6d28d9;--brand2:#2563eb;--accent:#7c3aed;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--card:#ffffff;--grad:linear-gradient(135deg,#7c3aed 0%,#2563eb 100%);--grad2:linear-gradient(135deg,#8b5cf6 0%,#3b82f6 100%);--shadow:0 20px 45px -18px rgba(15,23,42,.25);--shadow-sm:0 8px 24px -12px rgba(15,23,42,.18)}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 60px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);background:rgba(124,58,237,.08);border:1px solid rgba(124,58,237,.18);padding:7px 16px;border-radius:999px;margin-bottom:18px}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--grad)}
.section-head h2{font-size:clamp(30px,4.4vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.15;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:17px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:15px;padding:14px 28px;border-radius:12px;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;border:1px solid transparent;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 30px -10px rgba(109,40,217,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(109,40,217,.65)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-lg{padding:17px 36px;font-size:16px;border-radius:14px}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(4px)}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.topbar{position:fixed;top:0;left:0;right:0;z-index:1000;transition:background .3s,box-shadow .3s,backdrop-filter .3s;background:transparent}
.topbar.scrolled{background:rgba(15,23,42,.86);backdrop-filter:saturate(180%) blur(14px);box-shadow:0 8px 30px -12px rgba(0,0,0,.35)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:20px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;letter-spacing:-.01em;color:#fff}
.logo img{width:36px;height:36px;object-fit:contain;border-radius:8px}
.logo span{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;padding:10px 16px;font-weight:600;font-size:15px;color:rgba(255,255,255,.85);border-radius:10px;cursor:pointer;transition:color .2s,background .2s}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link .caret{transition:transform .25s}
.nav-item:hover .nav-link .caret,.nav-item.open .nav-link .caret{transform:rotate(180deg)}
.dropdown{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(8px);min-width:230px;background:#fff;border-radius:16px;box-shadow:var(--shadow);padding:10px;opacity:0;visibility:hidden;transition:opacity .22s,transform .22s,visibility .22s}
.nav-item:hover .dropdown,.nav-item.open .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown::before{content:"";position:absolute;top:-8px;left:50%;width:16px;height:16px;background:#fff;transform:translateX(-50%) rotate(45deg);border-radius:3px}
.dropdown a{display:flex;align-items:center;gap:10px;padding:11px 14px;font-size:14.5px;font-weight:600;color:var(--ink);border-radius:10px;transition:background .18s,color .18s}
.dropdown a:hover{background:rgba(124,58,237,.08);color:var(--brand)}
.dropdown a small{display:block;font-weight:400;color:var(--muted);font-size:12.5px}
.topbar-actions{display:flex;align-items:center;gap:12px}
.btn-login{padding:10px 20px;border:1px solid rgba(255,255,255,.35);color:#fff;border-radius:10px;font-weight:600;font-size:14.5px;transition:border-color .2s,background .2s}
.btn-login:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-dl{background:var(--grad);color:#fff;padding:11px 22px;border-radius:10px;font-weight:700;font-size:14.5px;box-shadow:0 10px 26px -8px rgba(109,40,217,.6);transition:transform .2s,box-shadow .2s}
.btn-dl:hover{transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(109,40,217,.7)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.hamburger span{width:26px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.hero{position:relative;padding:170px 0 110px;background:radial-gradient(1200px 600px at 80% -10%,rgba(124,58,237,.35),transparent 60%),radial-gradient(900px 500px at 10% 20%,rgba(37,99,235,.28),transparent 55%),#0f172a;color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:34px 34px;pointer-events:none}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);padding:8px 16px;border-radius:999px;font-size:13.5px;font-weight:600;margin-bottom:24px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 4px rgba(74,222,128,.25)}
.hero h1{font-size:clamp(38px,5.6vw,62px);font-weight:800;letter-spacing:-.03em;line-height:1.08;margin-bottom:22px}
.hero-sub{font-size:18px;color:rgba(255,255,255,.72);max-width:540px;margin-bottom:34px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column}
.stat b{font-size:30px;font-weight:800;letter-spacing:-.02em}
.stat span{font-size:13.5px;color:rgba(255,255,255,.6)}
.stat b small{font-size:17px;font-weight:700}
.simulator{position:relative;border-radius:20px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);padding:22px;backdrop-filter:blur(8px)}
.sim-header{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.sim-dot{width:11px;height:11px;border-radius:50%}
.sim-dot.r{background:#f87171}.sim-dot.y{background:#fbbf24}.sim-dot.g{background:#4ade80}
.sim-title{margin-left:auto;font-size:13px;color:rgba(255,255,255,.6);font-weight:600}
.sim-body{background:#0b1224;border-radius:14px;padding:22px;min-height:300px}
.sim-row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.sim-row:last-child{border-bottom:none}
.sim-row .label{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.75)}
.sim-row .label .ic{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;background:rgba(124,58,237,.25)}
.sim-toggle{width:48px;height:26px;border-radius:999px;background:rgba(255,255,255,.16);position:relative;cursor:pointer;transition:background .25s}
.sim-toggle::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:left .25s}
.sim-toggle.on{background:var(--grad)}
.sim-toggle.on::after{left:25px}
.sim-status{margin-top:18px;background:rgba(124,58,237,.15);border:1px solid rgba(124,58,237,.35);border-radius:12px;padding:16px;display:flex;align-items:center;gap:12px}
.sim-status .ping{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;background:var(--grad)}
.sim-status .info{font-size:13px;color:rgba(255,255,255,.8)}
.sim-status .info b{display:block;font-size:15px;color:#fff}
.sim-status .speed{margin-left:auto;text-align:right;font-size:22px;font-weight:800;color:#4ade80}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:34px 28px;position:relative;transition:transform .25s,box-shadow .25s;overflow:hidden}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step-card .num{position:absolute;top:14px;right:20px;font-size:56px;font-weight:800;color:rgba(124,58,237,.1);line-height:1}
.step-icon{width:54px;height:54px;border-radius:14px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:24px;margin-bottom:20px}
.step-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.step-card p{color:var(--muted);font-size:15px}
.features{background:#fff}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.feature-card{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:32px 26px;transition:transform .25s,box-shadow .25s,border-color .25s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(124,58,237,.35)}
.feature-icon{width:52px;height:52px;border-radius:13px;display:grid;place-items:center;font-size:24px;margin-bottom:20px;background:linear-gradient(135deg,rgba(124,58,237,.14),rgba(37,99,235,.14));color:var(--brand)}
.feature-card h3{font-size:18.5px;font-weight:700;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:14.8px}
.nodes{background:linear-gradient(180deg,#fff 0%,var(--bg) 100%)}
.perf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-bottom:50px}
.perf{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;text-align:center}
.perf b{display:block;font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.02em}
.perf span{color:var(--muted);font-size:13.5px}
.node-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.node-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;align-items:center;gap:13px;transition:transform .2s,box-shadow .2s;cursor:pointer}
.node-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.node-flag{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-size:18px;background:linear-gradient(135deg,rgba(124,58,237,.12),rgba(37,99,235,.12))}
.node-card b{display:block;font-size:15px}
.node-card span{color:var(--muted);font-size:12.5px}
.node-card .load{margin-left:auto;font-size:12px;font-weight:700;color:#4ade80}
.scenarios{background:#fff}
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.scenario-card{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:32px 26px;transition:transform .25s,box-shadow .25s}
.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.scenario-icon{width:52px;height:52px;border-radius:13px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:24px;margin-bottom:18px}
.scenario-card h3{font-size:18.5px;font-weight:700;margin-bottom:10px}
.scenario-card p{color:var(--muted);font-size:14.8px}
.protocols{background:var(--bg)}
.proto-wrap{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.proto-tag{display:inline-flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:13px 24px;font-weight:700;font-size:15px;transition:transform .2s,box-shadow .2s,border-color .2s;cursor:default}
.proto-tag:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-sm)}
.proto-tag .pdot{width:9px;height:9px;border-radius:50%;background:var(--grad)}
.pricing{background:linear-gradient(180deg,var(--bg) 0%,#fff 100%)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:36px 30px;position:relative;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price-card.popular{border:2px solid transparent;background-image:linear-gradient(#fff,#fff),var(--grad);background-origin:border-box;background-clip:padding-box,border-box;box-shadow:var(--shadow)}
.price-card .tag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:6px 16px;border-radius:999px;white-space:nowrap}
.price-card h3{font-size:18px;font-weight:700;margin-bottom:6px}
.price-card .desc{color:var(--muted);font-size:14px;margin-bottom:22px}
.price{font-size:46px;font-weight:800;letter-spacing:-.03em;margin-bottom:4px}
.price small{font-size:17px;font-weight:600;color:var(--muted)}
.price-card .per{color:var(--muted);font-size:13px;margin-bottom:24px}
.price-card ul{flex:1;margin-bottom:26px}
.price-card ul li{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:14.5px;color:var(--ink)}
.price-card ul li::before{content:"✓";color:#4ade80;font-weight:800;flex-shrink:0}
.faq{background:#fff}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;background:var(--bg);transition:box-shadow .2s}
.faq-item.open{box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 26px;font-size:17px;font-weight:700;text-align:left;background:none;border:none;cursor:pointer;color:var(--ink)}
.faq-q .plus{width:28px;height:28px;border-radius:8px;background:rgba(124,58,237,.1);color:var(--brand);display:grid;place-items:center;font-size:20px;flex-shrink:0;transition:transform .25s,background .25s}
.faq-item.open .faq-q .plus{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 26px 24px;color:var(--muted);font-size:15px}
.faq-a ol{padding-left:20px;margin-top:10px}
.faq-a ol li{margin:6px 0}
.news{background:var(--bg)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .thumb img{transform:scale(1.07)}
.news-card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:10px}
.news-meta .cat{background:rgba(124,58,237,.1);color:var(--brand);font-weight:700;padding:3px 10px;border-radius:6px}
.news-card h3{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:10px}
.news-card p{color:var(--muted);font-size:14px;flex:1;margin-bottom:14px}
.news-card .more{font-weight:700;font-size:14px;color:var(--brand)}
.testimonials{background:#fff}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.testi-card{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:30px;transition:transform .25s,box-shadow .25s}
.testi-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-sm)}
.stars{color:#f59e0b;font-size:16px;letter-spacing:2px;margin-bottom:14px}
.testi-card p{font-size:15px;color:var(--ink);margin-bottom:20px}
.testi-user{display:flex;align-items:center;gap:13px}
.avatar{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px;flex-shrink:0}
.testi-user b{display:block;font-size:15px}
.testi-user span{font-size:13px;color:var(--muted)}
.cta{position:relative;background:radial-gradient(900px 400px at 50% 0%,rgba(124,58,237,.4),transparent 60%),#0f172a;color:#fff;text-align:center;padding:110px 0}
.cta h2{font-size:clamp(32px,4.8vw,50px);font-weight:800;letter-spacing:-.02em;margin-bottom:20px}
.cta p{color:rgba(255,255,255,.7);font-size:17px;max-width:560px;margin:0 auto 34px}
.cta .btn-primary{box-shadow:0 16px 40px -12px rgba(109,40,217,.7)}
.footer{background:#0b1120;color:rgba(255,255,255,.7);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px}
.footer .logo{color:#fff;margin-bottom:18px}
.footer .about{font-size:14px;color:rgba(255,255,255,.55);max-width:300px}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer ul li{margin:10px 0}
.footer ul a{font-size:14px;color:rgba(255,255,255,.6);transition:color .2s}
.footer ul a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}
.page-hero{padding:150px 0 80px;background:radial-gradient(1000px 400px at 70% -10%,rgba(124,58,237,.35),transparent 60%),#0f172a;color:#fff;text-align:center}
.page-hero h1{font-size:clamp(32px,4.8vw,50px);font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.page-hero p{color:rgba(255,255,255,.7);font-size:17px;max-width:620px;margin:0 auto}
.breadcrumb{display:flex;align-items:center;justify-content:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.dl-ver-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:50px}
.ver-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.ver-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ver-card .plat{font-size:15px;font-weight:700;color:var(--brand);margin-bottom:8px}
.ver-card .ver{font-size:26px;font-weight:800;margin-bottom:4px}
.ver-card .size{color:var(--muted);font-size:13.5px;margin-bottom:20px}
.ver-card ul{flex:1;margin-bottom:22px}
.ver-card ul li{padding:6px 0;font-size:14px;color:var(--ink);display:flex;gap:9px}
.ver-card ul li::before{content:"✓";color:#4ade80;font-weight:800}
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.spec{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px}
.spec b{display:block;font-size:16px;margin-bottom:6px}
.spec span{color:var(--muted);font-size:14px}
.steps-horiz{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step2{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px 22px;position:relative}
.step2 .snum{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:16px}
.step2 h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step2 p{color:var(--muted);font-size:14px}
.article{max-width:820px;margin:0 auto;padding:70px 24px}
.article h1{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.2;margin-bottom:20px}
.article .meta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;color:var(--muted);font-size:14px;margin-bottom:30px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.article .meta .cat{background:rgba(124,58,237,.1);color:var(--brand);font-weight:700;padding:4px 12px;border-radius:6px}
.article .cover{border-radius:18px;overflow:hidden;margin-bottom:34px;box-shadow:var(--shadow-sm)}
.article h2{font-size:24px;font-weight:700;margin:34px 0 16px;letter-spacing:-.01em}
.article p{margin-bottom:18px;color:#334155;font-size:16px}
.article .figure{margin:26px 0}
.article .figure img{border-radius:14px;width:100%}
.article .figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article blockquote{border-left:4px solid var(--brand);background:rgba(124,58,237,.05);padding:20px 24px;border-radius:0 12px 12px 0;margin:26px 0;font-style:italic;color:#475569}
.article-pager{display:flex;justify-content:space-between;gap:16px;margin-top:50px;padding-top:28px;border-top:1px solid var(--line)}
.article-pager a{flex:1;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px 20px;font-size:14px;transition:border-color .2s,transform .2s}
.article-pager a:hover{border-color:var(--brand);transform:translateY(-2px)}
.article-pager a small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
.article-pager a b{color:var(--ink);font-weight:700}
.back-list{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--brand);margin-bottom:26px;font-size:14.5px}
.sitemap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;max-width:1000px;margin:0 auto}
.sitemap-col{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px}
.sitemap-col h3{font-size:17px;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--grad)}
.sitemap-col ul li{margin:9px 0}
.sitemap-col ul a{font-size:14.5px;color:var(--ink);transition:color .2s}
.sitemap-col ul a:hover{color:var(--brand)}
.notfound{padding:170px 0 120px;text-align:center;background:radial-gradient(900px 400px at 50% 0%,rgba(124,58,237,.3),transparent 60%),#0f172a;color:#fff}
.notfound h1{font-size:clamp(90px,18vw,180px);font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.notfound p{font-size:19px;color:rgba(255,255,255,.7);margin:20px 0 34px}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s,transform .7s}
.reveal.visible{opacity:1;transform:none}
@media (max-width:992px){
.nav{position:fixed;top:74px;left:0;right:0;background:#0f172a;flex-direction:column;align-items:stretch;padding:16px 20px;gap:2px;max-height:0;overflow:hidden;transition:max-height .3s;box-shadow:0 20px 40px -20px rgba(0,0,0,.5)}
.nav.mobile-open{max-height:80vh;overflow-y:auto}
.nav-item{width:100%}
.nav-link{padding:14px 12px;justify-content:space-between}
.nav-link:hover{background:rgba(255,255,255,.06)}
.dropdown{position:static;transform:none;background:rgba(255,255,255,.04);box-shadow:none;opacity:1;visibility:visible;max-height:0;overflow:hidden;padding:0;transition:max-height .3s;margin:0 8px;border-radius:10px}
.dropdown::before{display:none}
.nav-item.open .dropdown{max-height:400px;padding:8px}
.dropdown a{color:rgba(255,255,255,.85)}
.dropdown a:hover{background:rgba(255,255,255,.08);color:#fff}
.hamburger{display:flex}
.topbar-actions .btn-login{display:none}
.hero-grid{grid-template-columns:1fr;gap:44px}
.steps,.feature-grid,.node-grid,.scenario-grid,.price-grid,.news-grid,.testi-grid,.dl-ver-grid,.spec-grid,.steps-horiz,.sitemap-grid{grid-template-columns:repeat(2,1fr)}
.perf-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
.section{padding:70px 0}
.steps,.feature-grid,.node-grid,.scenario-grid,.price-grid,.news-grid,.testi-grid,.dl-ver-grid,.spec-grid,.steps-horiz{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.hero{padding:140px 0 80px}
.hero-stats{gap:24px}
.stat b{font-size:26px}
.perf-grid{grid-template-columns:repeat(2,1fr)}
.sitemap-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
.container{padding:0 18px}
.hero-cta .btn{width:100%}
.hero h1{font-size:34px}
.footer-grid{grid-template-columns:1fr}
.node-grid,.perf-grid{grid-template-columns:1fr 1fr}
.btn-lg{width:100%}
}