:root{--brand:#2563eb;--brand2:#14b8a6;--brand3:#0ea5e9;--dark:#0f172a;--ink:#1e293b;--muted:#64748b;--bg:#f6f8fb;--card:#ffffff;--line:#e5e9f2;--grad:linear-gradient(135deg,#2563eb 0%,#14b8a6 100%);--grad2:linear-gradient(135deg,#2563eb 0%,#0ea5e9 50%,#14b8a6 100%);--shadow:0 10px 30px rgba(15,23,42,.08);--shadow-lg:0 20px 50px rgba(15,23,42,.14);--radius:16px;--radius-sm:10px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:#fff}
.section-head{text-align:center;max-width:720px;margin:0 auto 52px}
.section-head .kicker{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:100px;background:rgba(37,99,235,.08);color:var(--brand);font-size:14px;font-weight:600;margin-bottom:16px}
.section-head h2{font-size:36px;line-height:1.25;font-weight:800;color:var(--dark);letter-spacing:-.5px}
.section-head p{color:var(--muted);font-size:17px;margin-top:14px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:100px;font-size:16px;font-weight:600;transition:all .25s ease;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(37,99,235,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(37,99,235,.42)}
.btn-ghost{border:1.5px solid var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-lg{padding:16px 34px;font-size:17px}
.btn-sm{padding:10px 20px;font-size:14px}
header.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:all .3s ease;background:transparent;padding:16px 0}
header.nav.scrolled{background:rgba(15,23,42,.82);backdrop-filter:blur(14px);padding:10px 0;box-shadow:0 4px 20px rgba(0,0,0,.15)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:#fff}
.nav-logo img{width:34px;height:34px;border-radius:8px}
.nav-logo span em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;padding:10px 16px;color:rgba(255,255,255,.86);font-size:15px;font-weight:500;border-radius:8px;transition:all .2s;cursor:pointer}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.1)}
.nav-link .caret{transition:transform .25s;font-size:11px}
.nav-item:hover .caret{transform:rotate(180deg)}
.dropdown-panel{position:absolute;top:calc(100% + 10px);left:0;min-width:210px;background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease}
.nav-item:hover .dropdown-panel{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown-panel a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;color:var(--ink);font-size:14px;font-weight:500;transition:all .2s}
.dropdown-panel a:hover{background:rgba(37,99,235,.07);color:var(--brand)}
.dropdown-panel a .ic{width:28px;height:28px;border-radius:8px;background:rgba(37,99,235,.1);display:flex;align-items:center;justify-content:center;font-size:15px}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:all .3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hero{position:relative;padding:150px 0 90px;background:radial-gradient(1100px 600px at 80% -10%,rgba(20,184,166,.22),transparent 60%),radial-gradient(900px 500px at 10% 10%,rgba(37,99,235,.25),transparent 55%),linear-gradient(150deg,#0b1530 0%,#101f45 55%,#0c1a38 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:100px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);font-size:14px;margin-bottom:22px}
.hero-badge b{color:#5eead4}
.hero h1{font-size:50px;line-height:1.16;font-weight:800;letter-spacing:-1px;margin-bottom:20px}
.hero .sub{font-size:19px;color:rgba(255,255,255,.78);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap}
.hero-stats .stat b{font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.hero-stats .stat span{font-size:14px;color:rgba(255,255,255,.65)}
.demo-window{background:#fff;border-radius:20px;box-shadow:0 30px 60px rgba(0,0,0,.35);overflow:hidden;color:var(--ink)}
.demo-titlebar{display:flex;align-items:center;gap:8px;padding:14px 18px;background:#f1f5f9;border-bottom:1px solid var(--line)}
.demo-dot{width:12px;height:12px;border-radius:50%}
.demo-dot.r{background:#f87171}.demo-dot.y{background:#fbbf24}.demo-dot.g{background:#34d399}
.demo-title{margin-left:8px;font-size:13px;color:var(--muted);font-weight:600}
.demo-body{padding:18px;height:360px;display:flex;flex-direction:column;background:linear-gradient(180deg,#f8fafc,#eef2f7)}
.demo-chat{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding-right:4px}
.msg{max-width:78%;padding:11px 14px;border-radius:14px;font-size:14px;line-height:1.55;animation:pop .35s ease}
.msg.other{align-self:flex-start;background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.self{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:4px}
.msg .t{display:block;font-size:11px;opacity:.6;margin-top:5px}
.demo-input{display:flex;gap:10px;margin-top:12px}
.demo-input input{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:100px;font-size:14px;outline:none}
.demo-input input:focus{border-color:var(--brand)}
.demo-input button{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;font-size:18px;flex-shrink:0}
.demo-tools{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.demo-tools .chip{font-size:12px;padding:6px 12px;border-radius:100px;background:#fff;border:1px solid var(--line);color:var(--muted);transition:all .2s}
.demo-tools .chip.on{background:var(--brand);color:#fff;border-color:var(--brand)}
@keyframes pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feature-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:all .3s;position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--grad);opacity:0;transition:opacity .3s}
.feature-card:hover::before{opacity:1}
.feature-ic{width:54px;height:54px;border-radius:14px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.feature-card h3{font-size:18px;font-weight:700;color:var(--dark);margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--muted)}
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scenario-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--dark);min-height:220px;display:flex;align-items:flex-end;padding:26px;color:#fff;transition:all .3s}
.scenario-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;transition:all .4s}
.scenario-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(10,16,38,.92) 100%)}
.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.scenario-card:hover img{opacity:.7;transform:scale(1.05)}
.scenario-card .sc-body{position:relative;z-index:2}
.scenario-card .sc-tag{display:inline-block;font-size:12px;padding:4px 12px;border-radius:100px;background:rgba(37,99,235,.9);margin-bottom:10px}
.scenario-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.scenario-card p{font-size:14px;color:rgba(255,255,255,.82)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.pricing-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:36px 30px;display:flex;flex-direction:column;position:relative;transition:all .3s}
.pricing-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.pricing-card.popular{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;box-shadow:var(--shadow-lg)}
.pricing-card .pop-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:13px;font-weight:600;padding:6px 18px;border-radius:100px;white-space:nowrap}
.pricing-name{font-size:18px;font-weight:700;color:var(--dark)}
.pricing-desc{font-size:13.5px;color:var(--muted);margin:6px 0 20px}
.pricing-price{font-size:44px;font-weight:800;color:var(--dark)}
.pricing-price small{font-size:16px;font-weight:500;color:var(--muted)}
.pricing-price .unit{font-size:16px;color:var(--muted);font-weight:500}
.pricing-feats{margin:24px 0;flex:1}
.pricing-feats li{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:14.5px;color:var(--ink)}
.pricing-feats li::before{content:"✓";color:var(--brand2);font-weight:800;flex-shrink:0}
.pricing-card .btn{width:100%}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:all .3s}
.faq-item.open{box-shadow:var(--shadow);border-color:transparent}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--dark);cursor:pointer}
.faq-q .faq-ic{width:30px;height:30px;border-radius:50%;background:rgba(37,99,235,.08);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;transition:transform .3s}
.faq-item.open .faq-ic{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a .faq-a-inner{padding:0 24px 22px;color:var(--muted);font-size:15px}
.faq-a ol{margin:10px 0 0 18px}
.faq-a ol li{margin:6px 0}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.testimonial-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:all .3s}
.testimonial-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.testimonial-card .stars{color:#f59e0b;font-size:15px;margin-bottom:14px;letter-spacing:2px}
.testimonial-card .quote{font-size:15px;color:var(--ink);line-height:1.75;margin-bottom:20px}
.testimonial-card .who{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;flex-shrink:0}
.who .nm{font-weight:700;font-size:14.5px;color:var(--dark)}
.who .role{font-size:12.5px;color:var(--muted)}
.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(--radius);overflow:hidden;transition:all .3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card:hover .thumb img{transform:scale(1.06)}
.news-card .thumb .cat{position:absolute;top:12px;left:12px;background:var(--grad);color:#fff;font-size:12px;padding:4px 12px;border-radius:100px}
.news-card .body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-card .date{font-size:12.5px;color:var(--muted);margin-bottom:10px}
.news-card h3{font-size:17px;font-weight:700;color:var(--dark);line-height:1.45;margin-bottom:12px}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{font-size:14px;color:var(--muted);flex:1}
.cta{background:radial-gradient(900px 400px at 50% 0%,rgba(20,184,166,.25),transparent 60%),linear-gradient(150deg,#0b1530,#101f45);color:#fff;text-align:center;padding:88px 0}
.cta h2{font-size:38px;font-weight:800;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.75);font-size:17px;margin-bottom:32px}
.cta .btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
footer.footer{background:var(--dark);color:rgba(255,255,255,.72);padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:46px}
.footer-brand .nav-logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;max-width:300px}
.footer h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.62);transition:color .2s}
.footer-col a:hover{color:#5eead4}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:26px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:8px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#cbd5e1}
.page-hero{background:radial-gradient(900px 400px at 80% -10%,rgba(20,184,166,.2),transparent 60%),linear-gradient(150deg,#0b1530,#101f45);color:#fff;padding:140px 0 70px;text-align:center}
.page-hero h1{font-size:42px;font-weight:800;margin-bottom:14px}
.page-hero p{color:rgba(255,255,255,.75);font-size:17px;max-width:640px;margin:0 auto}
.news-list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-wrap{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.article-main{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:40px;overflow:hidden}
.article-hero-img{width:100%;border-radius:14px;margin:8px 0 28px;aspect-ratio:16/9;object-fit:cover}
.article-main h1{font-size:31px;line-height:1.35;font-weight:800;color:var(--dark);margin-bottom:16px}
.article-meta{display:flex;align-items:center;gap:16px;font-size:13.5px;color:var(--muted);padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:26px;flex-wrap:wrap}
.article-body h2{font-size:23px;font-weight:700;color:var(--dark);margin:34px 0 16px;scroll-margin-top:100px}
.article-body p{font-size:16px;color:var(--ink);margin-bottom:18px;line-height:1.85}
.article-body img{width:100%;border-radius:12px;margin:10px 0 22px;aspect-ratio:2/1;object-fit:cover}
.article-body blockquote{border-left:4px solid var(--brand);background:rgba(37,99,235,.05);padding:16px 20px;border-radius:8px;margin:22px 0;font-style:italic;color:var(--ink)}
.article-pager{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
.article-pager a{flex:1;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px 18px;font-size:14px;transition:all .25s}
.article-pager a:hover{border-color:var(--brand);color:var(--brand)}
.article-pager .dir{font-size:12px;color:var(--muted);display:block;margin-bottom:4px}
.sidebar{position:sticky;top:90px;display:flex;flex-direction:column;gap:22px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.side-card h4{font-size:16px;font-weight:700;color:var(--dark);padding-left:12px;border-left:4px solid var(--brand);margin-bottom:16px}
.toc-list{position:relative;padding-left:16px}
.toc-list::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:var(--line)}
.toc-list a{position:relative;display:block;padding:7px 0 7px 16px;font-size:13.5px;color:var(--muted);transition:all .2s}
.toc-list a::before{content:"";position:absolute;left:-13px;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:#cbd5e1;transition:all .2s}
.toc-list a.active{color:var(--brand);font-weight:700}
.toc-list a.active::before{background:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.18)}
.hot-list li{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid #f1f5f9}
.hot-list li:last-child{border-bottom:none}
.hot-list .rank{width:24px;height:24px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:#fff;background:#cbd5e1;flex-shrink:0;transition:all .2s}
.hot-list li:nth-child(1) .rank{background:var(--grad)}
.hot-list li:nth-child(2) .rank{background:linear-gradient(135deg,#f97316,#f59e0b)}
.hot-list li:nth-child(3) .rank{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.hot-list a{font-size:13.5px;color:var(--ink);line-height:1.4;transition:color .2s}
.hot-list a:hover{color:var(--brand)}
.hot-list li:hover .rank{transform:scale(1.12)}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px}
.cat-tags a{font-size:13px;padding:6px 14px;border-radius:100px;background:var(--bg);border:1px solid var(--line);color:var(--muted);transition:all .2s}
.cat-tags a:hover{color:var(--brand);border-color:var(--brand)}
.comments{margin-top:40px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.comments h3{font-size:19px;font-weight:700;color:var(--dark);margin-bottom:22px}
.comment{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid #f1f5f9}
.comment:last-child{border-bottom:none}
.comment .body .nm{font-weight:700;font-size:14px;color:var(--dark)}
.comment .body .dt{font-size:12px;color:var(--muted);margin:2px 0 8px}
.comment .body p{font-size:14.5px;color:var(--ink)}
.dl-hero{background:radial-gradient(1000px 500px at 85% 0%,rgba(20,184,166,.22),transparent 60%),linear-gradient(150deg,#0b1530,#101f45);color:#fff;padding:150px 0 90px}
.dl-hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.dl-hero h1{font-size:44px;font-weight:800;margin-bottom:18px}
.dl-hero .sub{font-size:18px;color:rgba(255,255,255,.78);margin-bottom:26px}
.dl-meta{display:flex;gap:36px;margin-bottom:32px;flex-wrap:wrap}
.dl-meta .m b{display:block;font-size:24px;font-weight:800;color:#5eead4}
.dl-meta .m span{font-size:13px;color:rgba(255,255,255,.65)}
.versions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.version-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;transition:all .3s}
.version-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.version-card .v-tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:600;padding:4px 12px;border-radius:100px;background:rgba(37,99,235,.1);color:var(--brand);margin-bottom:14px}
.version-card h3{font-size:20px;font-weight:700;color:var(--dark);margin-bottom:6px}
.version-card .v-size{font-size:13px;color:var(--muted);margin-bottom:16px}
.version-card ul{flex:1;margin-bottom:20px}
.version-card ul li{font-size:14px;padding:5px 0;color:var(--ink)}
.version-card ul li::before{content:"✓";color:var(--brand2);font-weight:800;margin-right:8px}
.sysreq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sysreq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center}
.sysreq-item .ic{font-size:28px;margin-bottom:10px}
.sysreq-item h4{font-size:15px;font-weight:700;color:var(--dark);margin-bottom:6px}
.sysreq-item p{font-size:13.5px;color:var(--muted)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;text-align:center;transition:all .3s}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step-card .num{width:50px;height:50px;border-radius:50%;background:var(--grad);color:#fff;font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.step-card h4{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:8px}
.step-card p{font-size:14px;color:var(--muted)}
.sitemap-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sitemap-group{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.sitemap-group h3{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:14px;padding-left:12px;border-left:4px solid var(--brand)}
.sitemap-group a{display:block;font-size:14.5px;color:var(--muted);padding:6px 0;transition:color .2s}
.sitemap-group a:hover{color:var(--brand)}
.page404{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:radial-gradient(800px 500px at 50% 0%,rgba(37,99,235,.18),transparent 60%),linear-gradient(150deg,#0b1530,#101f45);color:#fff;padding:24px}
.page404 .code{font-size:120px;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.page404 h1{font-size:28px;margin:16px 0}
.page404 p{color:rgba(255,255,255,.7);margin-bottom:28px}
.reveal{opacity:0;transform:translateY(24px);transition:all .6s ease}
.reveal.in{opacity:1;transform:none}
@media(max-width:992px){.container{padding:0 20px}.section{padding:64px 0}.hero,.dl-hero{padding:120px 0 64px}.hero-inner,.dl-hero-inner{grid-template-columns:1fr;gap:40px}.hero h1{font-size:38px}.dl-hero h1{font-size:34px}.features-grid{grid-template-columns:repeat(2,1fr)}.scenario-grid,.pricing-grid,.testimonials-grid,.news-grid,.news-list-grid,.versions-grid,.steps-grid,.sitemap-cols{grid-template-columns:repeat(2,1fr)}.sysreq-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.nav-menu{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:#fff;flex-direction:column;align-items:stretch;padding:80px 24px 30px;transition:right .3s ease;box-shadow:-10px 0 40px rgba(0,0,0,.2);gap:0}.nav-menu.open{right:0}.nav-list{flex-direction:column;align-items:stretch;gap:0}.nav-link{color:var(--ink);padding:14px 12px;justify-content:space-between}.nav-link:hover{color:var(--brand);background:rgba(37,99,235,.06)}.nav-item .dropdown-panel{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;background:var(--bg);padding:0;max-height:0;overflow:hidden;transition:max-height .3s ease;border-radius:10px}.nav-item.drop-open .dropdown-panel{max-height:400px}.dropdown-panel a{color:var(--ink);padding:10px 16px}.nav-cta{display:none}.nav-toggle{display:flex}.article-wrap{grid-template-columns:1fr}.sidebar{position:static}.article-main{padding:24px}}
@media(max-width:768px){.section-head h2{font-size:28px}.hero h1{font-size:31px}.dl-hero h1{font-size:28px}.features-grid,.scenario-grid,.pricing-grid,.testimonials-grid,.news-grid,.news-list-grid,.versions-grid,.steps-grid,.sitemap-cols,.sysreq-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:28px}.hero-stats{gap:24px}.hero-stats .stat b{font-size:24px}.article-main h1{font-size:24px}.demo-body{height:300px}}
@media(max-width:480px){.container{padding:0 16px}.section{padding:48px 0}.hero,.dl-hero{padding:100px 0 48px}.hero h1{font-size:27px}.dl-hero h1{font-size:25px}.btn{padding:12px 22px;font-size:15px}.hero-actions,.btn-group{flex-direction:column}.hero-actions .btn{width:100%}.demo-body{height:260px}}