:root{--p:#4F46E5;--p2:#7C3AED;--ac:#FF6B35;--bg:#0F1220;--bg2:#151930;--card:#ffffff;--txt:#1B1F3B;--mut:#6B7194;--line:#E8EAF6;--grad:linear-gradient(135deg,#4F46E5 0%,#7C3AED 100%);--grad2:linear-gradient(135deg,#FF6B35 0%,#FF3D6E 100%);--shadow:0 12px 40px rgba(20,25,60,.10);--shadow2:0 24px 70px rgba(79,70,229,.22);--r:18px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--txt);background:#fff;line-height:1.7;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--alt{background:#F7F8FD}
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--p);background:rgba(79,70,229,.08);padding:6px 16px;border-radius:100px;margin-bottom:16px}
.section-title{font-size:40px;font-weight:800;line-height:1.25;letter-spacing:-.02em;margin-bottom:16px}
.section-title .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{font-size:17px;color:var(--mut);line-height:1.8}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;padding:14px 28px;border-radius:12px;cursor:pointer;border:none;transition:.3s;white-space:nowrap}
.btn--grad{background:var(--grad);color:#fff;box-shadow:var(--shadow2)}
.btn--grad:hover{transform:translateY(-3px);box-shadow:0 30px 70px rgba(79,70,229,.35)}
.btn--ghost{background:transparent;color:var(--p);border:1.5px solid rgba(79,70,229,.4)}
.btn--ghost:hover{background:rgba(79,70,229,.06);border-color:var(--p)}
.btn--lg{padding:16px 34px;font-size:16px;border-radius:14px}
.btn--sm{padding:10px 20px;font-size:14px}
.btn--white{background:#fff;color:var(--p);box-shadow:0 10px 30px rgba(0,0,0,.18)}
.btn--white:hover{transform:translateY(-3px)}
.icon{width:22px;height:22px;flex:none}
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:18px 0;transition:.35s;background:transparent}
.navbar.scrolled{background:rgba(15,18,32,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:12px 0;box-shadow:0 8px 30px rgba(0,0,0,.25)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff}
.nav-logo img{width:34px;height:34px;border-radius:8px}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;color:#E7E9F5;font-size:15px;font-weight:600;padding:10px 14px;border-radius:10px;transition:.25s;cursor:pointer}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link .arrow{transition:.3s;font-size:11px;color:#A9AECB}
.nav-item:hover .arrow{transform:rotate(180deg)}
.dropdown{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(10px);background:#fff;border-radius:14px;box-shadow:0 20px 60px rgba(0,0,0,.25);padding:10px;min-width:230px;opacity:0;visibility:hidden;transition:.3s;z-index:50}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown::before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
.dropdown a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;color:var(--txt);font-size:14px;font-weight:500;transition:.2s}
.dropdown a:hover{background:#F1F2FB;color:var(--p)}
.dropdown .dd-ic{width:18px;height:18px;color:var(--p)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:26px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
.hero{position:relative;padding:170px 0 100px;background:radial-gradient(1200px 600px at 80% -10%,#4F46E5 0%,transparent 55%),radial-gradient(900px 500px at 10% 0%,#7C3AED 0%,transparent 50%),var(--bg);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='0.05'%3E%3Cpath d='M30 0v60M0 30h60'/%3E%3C/g%3E%3C/svg%3E");pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:100px;padding:7px 16px;font-size:13px;font-weight:600;margin-bottom:22px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:#4ADE80;box-shadow:0 0 0 4px rgba(74,222,128,.25)}
.hero-title{font-size:56px;font-weight:900;line-height:1.12;letter-spacing:-.03em;margin-bottom:20px}
.hero-title .grad{background:linear-gradient(90deg,#A5B4FC,#C4B5FD);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:19px;color:#C4C8DE;line-height:1.8;margin-bottom:32px;max-width:520px}
.hero-btns{display:flex;gap:16px;margin-bottom:40px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px}
.hero-stats .stat b{font-size:30px;font-weight:800;display:block;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .stat span{font-size:14px;color:#9CA2C0}
.simulator{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:20px;backdrop-filter:blur(10px);box-shadow:0 40px 80px rgba(0,0,0,.35)}
.sim-window{background:#fff;border-radius:14px;overflow:hidden;color:var(--txt)}
.sim-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#F3F4F9;border-bottom:1px solid var(--line)}
.sim-dot{width:11px;height:11px;border-radius:50%}
.sim-dot.r{background:#FF5F57}.sim-dot.y{background:#FEBC2E}.sim-dot.g{background:#28C840}
.sim-title{margin-left:8px;font-size:13px;font-weight:600;color:var(--mut)}
.sim-body{padding:20px}
.sim-langs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.sim-lang{font-size:13px;font-weight:600;padding:7px 14px;border-radius:8px;background:#F1F2FB;color:var(--p);cursor:pointer;transition:.2s;border:1.5px solid transparent}
.sim-lang.active{background:var(--grad);color:#fff;border-color:transparent}
.sim-box{background:#F8F9FE;border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px;min-height:80px}
.sim-box textarea,.sim-box .sim-out{width:100%;border:none;background:transparent;outline:none;font-size:15px;resize:none;color:var(--txt);line-height:1.7;font-family:inherit}
.sim-out{min-height:60px}
.sim-swap{display:flex;justify-content:center;margin:8px 0}
.sim-swap button{width:38px;height:38px;border-radius:50%;border:none;background:var(--grad);color:#fff;font-size:16px;cursor:pointer;box-shadow:var(--shadow2);transition:.3s}
.sim-swap button:hover{transform:rotate(180deg)}
.sim-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--mut)}
.sim-foot .copy-btn{font-size:13px;font-weight:700;color:var(--p);cursor:pointer;background:none;border:none}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 28px;transition:.3s}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step-num{position:absolute;top:-20px;left:28px;width:42px;height:42px;border-radius:12px;background:var(--grad);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow2)}
.step-ic{width:52px;height:52px;border-radius:14px;background:rgba(79,70,229,.1);display:flex;align-items:center;justify-content:center;color:var(--p);margin:18px 0 16px}
.step-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.step-card p{color:var(--mut);font-size:15px}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px 28px;transition:.3s;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:.4s}
.feature-card:hover::before{transform:scaleX(1)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.feature-ic{width:54px;height:54px;border-radius:14px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:18px;box-shadow:0 10px 24px rgba(79,70,229,.28)}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.feature-card p{color:var(--mut);font-size:15px}
.stats-band{background:var(--bg);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;inset:0;background:radial-gradient(800px 400px at 20% 0%,rgba(79,70,229,.35),transparent 60%)}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center;margin-bottom:60px}
.stats-grid .num{font-size:44px;font-weight:900;background:linear-gradient(90deg,#A5B4FC,#C4B5FD);-webkit-background-clip:text;background-clip:text;color:transparent}
.stats-grid .lbl{font-size:15px;color:#9CA2C0;margin-top:6px}
.nodes-title{position:relative;text-align:center;color:#fff;font-size:24px;font-weight:700;margin-bottom:36px}
.nodes-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.node-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:20px;display:flex;align-items:center;gap:14px;transition:.3s}
.node-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.node-flag{width:42px;height:42px;border-radius:10px;background:rgba(165,180,252,.2);color:#A5B4FC;font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;flex:none;letter-spacing:.05em}
.node-card .n-name{font-weight:700;font-size:15px}
.node-card .n-meta{font-size:12px;color:#9CA2C0}
.scenarios-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.scenario-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px 28px;transition:.3s}
.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.scenario-ic{width:52px;height:52px;border-radius:14px;background:rgba(255,107,53,.12);color:var(--ac);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.scenario-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.scenario-card p{color:var(--mut);font-size:15px}
.tech-tags{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.tech-tag{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:100px;background:#fff;border:1.5px solid var(--line);font-weight:600;font-size:15px;color:var(--txt);transition:.3s}
.tech-tag:hover{border-color:var(--p);color:var(--p);transform:translateY(-3px);box-shadow:var(--shadow)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch}
.price-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:38px 30px;display:flex;flex-direction:column;transition:.3s;position:relative}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price-card.hot{background:var(--bg);color:#fff;border:none;box-shadow:0 30px 70px rgba(15,18,32,.3);transform:scale(1.03)}
.price-card.hot:hover{transform:scale(1.03) translateY(-6px)}
.hot-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad2);color:#fff;font-size:12px;font-weight:800;padding:6px 16px;border-radius:100px;white-space:nowrap;letter-spacing:.05em}
.price-name{font-size:15px;font-weight:700;color:var(--mut);text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}
.price-card.hot .price-name{color:#A9AECB}
.price-val{display:flex;align-items:baseline;gap:6px;margin-bottom:24px}
.price-val b{font-size:52px;font-weight:900;line-height:1}
.price-val span{font-size:15px;color:var(--mut)}
.price-card.hot .price-val span{color:#9CA2C0}
.price-feats{flex:1;margin-bottom:28px}
.price-feats li{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:15px;color:var(--mut)}
.price-card.hot .price-feats li{color:#C4C8DE}
.price-feats li::before{content:"✓";width:20px;height:20px;border-radius:50%;background:rgba(79,70,229,.12);color:var(--p);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:12px;flex:none}
.price-card.hot .price-feats li::before{background:rgba(165,180,252,.25);color:#A5B4FC}
.price-card .btn{width:100%}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:16px;overflow:hidden}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 26px;cursor:pointer;font-weight:700;font-size:17px}
.faq-q .f-arrow{transition:.3s;color:var(--p);font-size:13px;flex:none}
.faq-item.open .f-arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-in{padding:0 26px 24px;color:var(--mut);font-size:15px}
.faq-a ol{margin-left:20px}
.faq-a ol li{margin-bottom:8px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .nc-img{aspect-ratio:16/9;overflow:hidden;background:#eee}
.news-card .nc-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.news-card:hover .nc-img img{transform:scale(1.07)}
.news-card .nc-body{padding:22px;display:flex;flex-direction:column;flex:1}
.nc-meta{display:flex;gap:14px;font-size:13px;color:var(--mut);margin-bottom:10px}
.nc-cat{color:var(--p);font-weight:600}
.news-card h3{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:10px}
.news-card p{color:var(--mut);font-size:14px;flex:1;margin-bottom:16px}
.nc-more{color:var(--p);font-weight:700;font-size:14px}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.testi-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px 26px;transition:.3s}
.testi-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.testi-stars{color:#FBBF24;font-size:16px;margin-bottom:16px;letter-spacing:2px}
.testi-card blockquote{font-size:15px;color:var(--txt);line-height:1.8;margin-bottom:22px}
.testi-user{display:flex;align-items:center;gap:14px}
.testi-ava{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px}
.testi-user .t-name{font-weight:700;font-size:15px}
.testi-user .t-role{font-size:13px;color:var(--mut)}
.cta-band{background:var(--grad);border-radius:28px;padding:70px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.1);top:-180px;right:-80px}
.cta-band::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.08);bottom:-140px;left:-60px}
.cta-band h2{font-size:38px;font-weight:900;margin-bottom:16px;position:relative;z-index:2}
.cta-band p{font-size:17px;opacity:.92;margin-bottom:30px;position:relative;z-index:2}
.cta-band .btn{position:relative;z-index:2}
.footer{background:var(--bg);color:#C4C8DE;padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:50px}
.footer-brand p{font-size:14px;color:#8B90B0;margin-top:16px;max-width:280px;line-height:1.8}
.footer h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:20px}
.footer-col li{margin-bottom:12px}
.footer-col a{color:#9CA2C0;font-size:14px;transition:.2s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:13px;color:#6B7194}
.page-hero{position:relative;background:radial-gradient(1000px 500px at 80% -10%,#4F46E5,transparent 55%),radial-gradient(800px 400px at 10% 0%,#7C3AED,transparent 50%),var(--bg);color:#fff;padding:160px 0 80px;text-align:center;overflow:hidden}
.page-hero h1{font-size:46px;font-weight:900;letter-spacing:-.02em;margin-bottom:16px}
.page-hero p{font-size:18px;color:#C4C8DE;max-width:640px;margin:0 auto}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:56px}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px 28px;display:flex;flex-direction:column;transition:.3s}
.dl-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.dl-os{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--p);background:rgba(79,70,229,.08);padding:6px 14px;border-radius:100px;margin-bottom:18px;width:max-content}
.dl-card h3{font-size:22px;font-weight:800;margin-bottom:8px}
.dl-ver{font-size:14px;color:var(--mut);margin-bottom:20px}
.dl-size{font-size:13px;color:var(--mut);background:#F7F8FD;padding:8px 14px;border-radius:8px;margin-bottom:20px;width:max-content}
.dl-feats{flex:1;margin-bottom:24px}
.dl-feats li{display:flex;align-items:center;gap:8px;padding:6px 0;font-size:14px;color:var(--mut)}
.dl-feats li::before{content:"✓";color:var(--p);font-weight:800}
.dl-card.coming{opacity:.65;border-style:dashed}
.dl-card .btn{width:100%}
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:900px;margin:0 auto}
.sys-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;display:flex;align-items:center;gap:14px}
.sys-item .s-ic{width:44px;height:44px;border-radius:12px;background:rgba(79,70,229,.1);color:var(--p);display:flex;align-items:center;justify-content:center;flex:none}
.sys-item .s-k{font-size:13px;color:var(--mut)}
.sys-item .s-v{font-weight:700;font-size:15px}
.install-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:1000px;margin:0 auto}
.install-step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 24px;text-align:center;transition:.3s;position:relative}
.install-step:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.install-step .i-num{width:44px;height:44px;margin:0 auto 16px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:18px}
.install-step h3{font-size:17px;font-weight:700;margin-bottom:10px}
.install-step p{font-size:14px;color:var(--mut)}
.news-list{display:grid;grid-template-columns:1fr;gap:28px;max-width:820px;margin:56px auto 0}
.news-row{display:flex;gap:24px;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.3s}
.news-row:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.news-row .nr-img{width:300px;flex:none;aspect-ratio:16/9;overflow:hidden;background:#eee}
.news-row .nr-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.news-row:hover .nr-img img{transform:scale(1.06)}
.news-row .nr-body{padding:24px;display:flex;flex-direction:column;justify-content:center}
.breadcrumb{font-size:14px;color:var(--mut);margin:0 0 8px}
.breadcrumb a{color:var(--p)}
.article-head{max-width:820px;margin:0 auto;padding:0 24px}
.article-cover{border-radius:18px;overflow:hidden;margin:0 0 40px;aspect-ratio:16/9}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{max-width:820px;margin:0 auto;padding:0 24px}
.article-body h2{font-size:26px;font-weight:800;margin:36px 0 16px;color:var(--txt)}
.article-body h3{font-size:20px;font-weight:700;margin:28px 0 12px}
.article-body p{font-size:16.5px;color:#3A3F63;line-height:1.9;margin-bottom:18px}
.article-body .inimg{border-radius:14px;overflow:hidden;margin:28px 0;aspect-ratio:2/1}
.article-body .inimg img{width:100%;height:100%;object-fit:cover}
.article-body blockquote{border-left:4px solid var(--p);background:#F7F8FD;padding:20px 24px;border-radius:0 12px 12px 0;margin:28px 0;color:var(--mut);font-size:15px}
.prev-next{display:flex;justify-content:space-between;gap:20px;margin-top:50px;padding-top:30px;border-top:1px solid var(--line)}
.prev-next a{flex:1;padding:18px 20px;background:#F7F8FD;border-radius:12px;transition:.2s;font-size:14px;font-weight:600}
.prev-next a:hover{background:rgba(79,70,229,.08);color:var(--p)}
.prev-next .pn-label{font-size:12px;color:var(--mut);display:block;margin-bottom:4px;font-weight:500}
.back-list{display:inline-block;margin-top:30px;color:var(--p);font-weight:700;font-size:15px}
.notfound{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:var(--bg);color:#fff;padding:40px 24px}
.notfound h1{font-size:120px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.notfound h2{font-size:28px;font-weight:800;margin:20px 0 12px}
.notfound p{color:#9CA2C0;margin-bottom:30px}
.notfound .countdown{color:#A5B4FC;font-weight:700}
@media(max-width:992px){.nav-menu{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:#141829;flex-direction:column;align-items:stretch;gap:0;padding:90px 24px 30px;transition:.35s;overflow-y:auto;box-shadow:-20px 0 60px rgba(0,0,0,.4)}
.nav-menu.open{right:0}
.nav-link{color:#E7E9F5;justify-content:space-between;padding:14px 10px;border-bottom:1px solid rgba(255,255,255,.06)}
.nav-cta{margin-top:20px;flex-direction:column;width:100%}
.nav-cta .btn{width:100%}
.nav-toggle{display:flex}
.nav-item .dropdown{position:static;transform:none;opacity:1;visibility:visible;background:transparent;box-shadow:none;padding:0;min-width:0;display:none;margin:0}
.nav-item .dropdown.open{display:block}
.nav-item .dropdown a{color:#A9AECB;padding:10px 14px}
.nav-item .dropdown a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-item .arrow{transition:.3s}
.nav-item.sub-open .arrow{transform:rotate(180deg)}
.hero-grid{grid-template-columns:1fr;gap:50px}
.hero-title{font-size:42px}
.steps-grid,.features-grid,.scenarios-grid,.news-grid,.testi-grid,.pricing-grid,.dl-grid{grid-template-columns:repeat(2,1fr)}
.nodes-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}
.install-steps{grid-template-columns:repeat(2,1fr)}
.sys-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr;gap:30px}
.price-card.hot{transform:none}
.price-card.hot:hover{transform:translateY(-6px)}
.news-row{flex-direction:column}
.news-row .nr-img{width:100%}}
@media(max-width:768px){.section{padding:64px 0}
.section-title{font-size:30px}
.hero{padding:130px 0 70px}
.hero-title{font-size:34px}
.hero-sub{font-size:16px}
.hero-stats{gap:24px}
.steps-grid,.features-grid,.scenarios-grid,.news-grid,.testi-grid,.pricing-grid,.dl-grid{grid-template-columns:1fr}
.nodes-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}
.install-steps{grid-template-columns:1fr 1fr}
.sys-grid{grid-template-columns:1fr 1fr}
.footer-grid{grid-template-columns:1fr}
.cta-band h2{font-size:28px}
.page-hero h1{font-size:34px}
.article-body p{font-size:15.5px}}
@media(max-width:480px){.container{padding:0 18px}
.hero-title{font-size:30px}
.hero-btns{flex-direction:column}
.hero-btns .btn{width:100%}
.nodes-grid,.stats-grid,.install-steps,.sys-grid{grid-template-columns:1fr}
.section-title{font-size:26px}
.btn--lg{padding:14px 24px;font-size:15px}
.price-card.hot{transform:none}
.notfound h1{font-size:80px}}
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.sim-row{display:flex;gap:14px;align-items:stretch}
.sim-col{flex:1;min-width:0}
.sim-label{font-size:12px;font-weight:700;color:var(--mut);margin-bottom:8px}
.sim-label b{color:var(--p)}
@media(max-width:480px){.sim-row{flex-direction:column}}