:root{--primary:#2b6bff;--primary2:#6a3cff;--grad:linear-gradient(135deg,#2b6bff 0%,#6a3cff 100%);--dark:#0b1220;--dark2:#101a2e;--txt:#1f2a44;--muted:#5b6b8c;--line:#e7ecf5;--bg:#f6f8fc;--card:#ffffff;--radius:16px;--shadow:0 12px 40px rgba(20,40,90,.10);--shadow-lg:0 24px 70px rgba(30,60,140,.16);--nav-h:74px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;color:var(--txt);background:var(--bg);line-height:1.7;font-size:16px;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
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}
.sec{padding:96px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 56px}
.sec-head .kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--primary);text-transform:uppercase;background:rgba(43,107,255,.08);padding:6px 16px;border-radius:100px;margin-bottom:16px}
.sec-head h2{font-size:38px;line-height:1.25;color:var(--dark);font-weight:800;letter-spacing:-.5px}
.sec-head p{color:var(--muted);font-size:17px;margin-top:14px}
.sec-head.left{text-align:left;margin-left:0}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:16px;border-radius:12px;padding:14px 28px;transition:.25s cubic-bezier(.4,0,.2,1);white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(43,107,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(43,107,255,.45)}
.btn-ghost{background:transparent;color:var(--dark);border:2px solid var(--line)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-lg{padding:17px 36px;font-size:17px;border-radius:14px}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{transform:translateY(-2px)}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);transition:.3s;background:rgba(255,255,255,.6);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.nav.scrolled{background:rgba(11,18,32,.82);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 8px 30px rgba(0,0,0,.14)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:24px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--dark);flex-shrink:0}
.nav.scrolled .nav-logo{color:#fff}
.nav-logo img{height:34px;width:auto}
.nav-menu{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;padding:10px 16px;font-weight:600;font-size:15px;color:var(--dark);border-radius:10px;transition:.2s}
.nav.scrolled .nav-link{color:#eef2fb}
.nav-link:hover{color:var(--primary)}
.nav.scrolled .nav-link:hover{color:#fff}
.nav-link .arrow{display:inline-block;transition:transform .3s;font-size:12px}
.nav-item:hover .nav-link .arrow{transform:rotate(180deg)}
.dropdown{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(12px);background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);min-width:230px;padding:10px;opacity:0;visibility:hidden;transition:.28s cubic-bezier(.4,0,.2,1);z-index:1001}
.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:block;padding:11px 16px;border-radius:9px;color:var(--txt);font-size:14.5px;font-weight:500;transition:.18s}
.dropdown a:hover{background:rgba(43,107,255,.07);color:var(--primary)}
.dropdown .d-label{font-size:12px;color:var(--muted);padding:8px 16px 4px;font-weight:700;letter-spacing:.5px}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-actions .btn{padding:11px 20px;font-size:14.5px}
.burger{display:none;flex-direction:column;gap:5px;padding:8px;z-index:1002}
.burger span{width:24px;height:2px;background:var(--dark);transition:.3s;border-radius:2px}
.nav.scrolled .burger span{background:#fff}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hero{position:relative;padding:calc(var(--nav-h) + 60px) 0 80px;background:radial-gradient(1200px 600px at 80% -10%,rgba(106,60,255,.14),transparent 60%),radial-gradient(1000px 500px at 10% 0%,rgba(43,107,255,.12),transparent 55%),linear-gradient(180deg,#fbfcff 0%,var(--bg) 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:52px;line-height:1.15;font-weight:900;letter-spacing:-1px;color:var(--dark)}
.hero .sub{font-size:19px;color:var(--muted);margin:22px 0 30px;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stats .stat b{display:block;font-size:26px;font-weight:800;color:var(--dark)}
.hero-stats .stat span{font-size:13.5px;color:var(--muted)}
.hero-visual{position:relative}
.simulator{background:var(--card);border-radius:22px;box-shadow:var(--shadow-lg);overflow:hidden;border:1px solid var(--line)}
.sim-head{display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fafbff,#f3f6fd)}
.sim-head .dot{width:11px;height:11px;border-radius:50%}
.sim-body{padding:26px}
.sim-screen{background:linear-gradient(160deg,var(--dark2),#1a2742);border-radius:14px;padding:22px;color:#fff;min-height:210px;display:flex;flex-direction:column;justify-content:space-between}
.sim-screen .s-title{font-size:15px;color:#b9c6e6}
.sim-screen .s-big{font-size:30px;font-weight:800;margin:8px 0}
.sim-bar{height:8px;background:rgba(255,255,255,.15);border-radius:6px;overflow:hidden;margin-top:14px}
.sim-bar i{display:block;height:100%;width:0;background:var(--grad);border-radius:6px;transition:width 1s}
.sim-chips{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.sim-chips .chip{background:rgba(255,255,255,.12);padding:8px 14px;border-radius:100px;font-size:13px}
.sim-actions{margin-top:20px;display:flex;gap:10px}
.sim-actions .btn{flex:1;font-size:14px;padding:11px}
.sim-foot{display:flex;gap:16px;padding:18px;flex-wrap:wrap}
.sim-foot .f-item{flex:1;min-width:90px;text-align:center;padding:12px;background:var(--bg);border-radius:12px}
.sim-foot .f-item b{display:block;font-size:18px;color:var(--dark)}
.sim-foot .f-item span{font-size:12px;color:var(--muted)}
.grid{display:grid;gap:24px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card .ic{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;background:rgba(43,107,255,.1);color:var(--primary);margin-bottom:20px}
.card h3{font-size:19px;font-weight:700;color:var(--dark);margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.feature-list li{display:flex;gap:10px;align-items:flex-start;padding:9px 0;color:var(--muted);font-size:15px}
.feature-list li::before{content:"✓";color:var(--primary);font-weight:800;flex-shrink:0}
.band{background:linear-gradient(135deg,var(--dark) 0%,#1a2a4d 100%);color:#fff;padding:80px 0;position:relative;overflow:hidden;text-align:center}
.band::after{content:"";position:absolute;inset:0;background:radial-gradient(800px 400px at 70% 20%,rgba(43,107,255,.25),transparent 60%)}
.band .container{position:relative;z-index:1}
.band h2{font-size:36px;font-weight:800;color:#fff;letter-spacing:-.5px}
.band p{color:#b9c6e6;margin:16px auto 30px;font-size:17px;max-width:620px}
.faq-item{border:1px solid var(--line);border-radius:14px;margin-bottom:14px;background:#fff;overflow:hidden}
.faq-q{width:100%;text-align:left;padding:20px 24px;font-weight:600;font-size:16.5px;color:var(--dark);display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q .plus{font-size:22px;color:var(--primary);transition:.3s;flex-shrink:0}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;color:var(--muted);font-size:15.5px}
.step{position:relative;text-align:center;padding:34px 20px}
.step .num{width:52px;height:52px;margin:0 auto 18px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(43,107,255,.35)}
.step h3{font-size:18px;font-weight:700;color:var(--dark);margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px}
.footer{background:var(--dark);color:#aebbd6;padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:50px}
.footer .f-brand{font-size:22px;font-weight:800;color:#fff;display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer .f-brand img{height:32px}
.footer p{font-size:14px;line-height:1.8;color:#8b9bc0;max-width:300px}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer a{display:block;padding:6px 0;font-size:14px;color:#aebbd6;transition:.2s}
.footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13.5px;color:#7b8bb0}
.dl-hero{background:radial-gradient(1000px 500px at 85% -10%,rgba(106,60,255,.15),transparent 60%),linear-gradient(180deg,#fbfcff,var(--bg))}
.ver-card{border:1px solid var(--line);border-radius:18px;padding:34px;background:#fff;position:relative;transition:.3s;display:flex;flex-direction:column}
.ver-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ver-card.featured{border:2px solid var(--primary);box-shadow:var(--shadow)}
.ver-card .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:5px 16px;border-radius:100px}
.ver-card .ver{font-size:26px;font-weight:800;color:var(--dark)}
.ver-card .size{color:var(--muted);font-size:14px;margin:6px 0 18px}
.ver-card ul{margin:18px 0 26px;flex:1}
.ver-card .btn{width:100%}
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sys-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.sys-item b{display:block;font-size:15px;color:var(--dark);margin-bottom:6px}
.sys-item span{color:var(--muted);font-size:14px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.3s}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#eef2fb}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.news-card:hover .thumb img{transform:scale(1.06)}
.news-card .body{padding:22px}
.news-card .meta{display:flex;gap:14px;color:var(--muted);font-size:13px;margin-bottom:10px}
.news-card .meta .cat{color:var(--primary);font-weight:700}
.news-card h3{font-size:18px;font-weight:700;color:var(--dark);line-height:1.45;margin-bottom:8px}
.news-card p{color:var(--muted);font-size:14.5px}
.article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:44px;max-width:860px;margin:0 auto}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--primary)}
.article h1{font-size:34px;font-weight:800;color:var(--dark);line-height:1.3;margin-bottom:16px}
.article .ameta{display:flex;gap:16px;color:var(--muted);font-size:14px;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:28px}
.article .ameta .cat{color:var(--primary);font-weight:700}
.article h2{font-size:24px;font-weight:700;color:var(--dark);margin:34px 0 14px}
.article p{color:var(--txt);font-size:16.5px;margin-bottom:18px;line-height:1.9}
.article figure{margin:26px 0}
.article figure img{border-radius:14px;width:100%}
.article figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article blockquote{border-left:4px solid var(--primary);background:rgba(43,107,255,.05);padding:18px 22px;border-radius:0 12px 12px 0;margin:24px 0;color:var(--dark);font-weight:600}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.article-nav a{font-size:14.5px;color:var(--muted);transition:.2s}
.article-nav a:hover{color:var(--primary)}
.sitemap a{display:block;padding:10px 0;font-size:15.5px;color:var(--txt);border-bottom:1px dashed var(--line)}
.sitemap a:hover{color:var(--primary)}
.sitemap a span{color:var(--muted);font-size:13px;margin-left:10px}
.err-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px}
.err-code{font-size:120px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.err-wrap h1{font-size:28px;color:var(--dark);margin:16px 0 10px}
.err-wrap p{color:var(--muted);margin-bottom:26px}
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.4,0,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(max-width:992px){
.nav-menu{position:fixed;top:0;right:-100%;width:min(340px,84vw);height:100vh;background:#fff;flex-direction:column;align-items:flex-start;justify-content:flex-start;padding:90px 28px 30px;gap:4px;transition:.35s;box-shadow:-20px 0 60px rgba(0,0,0,.12);overflow-y:auto}
.nav-menu.open{right:0}
.nav-menu .nav-link{color:var(--dark)!important;font-size:17px;padding:14px 8px;width:100%;justify-content:space-between}
.nav-item{width:100%}
.dropdown{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;min-width:0;padding:0 0 0 16px;display:none;background:transparent}
.nav-item.open .dropdown{display:block}
.nav-item:hover .nav-link .arrow{transform:none}
.nav-item.open .nav-link .arrow{transform:rotate(180deg)}
.burger{display:flex}
.hero-grid{grid-template-columns:1fr;gap:44px}
.hero h1{font-size:40px}
.g3,.g4{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.sys-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.sec{padding:64px 0}
.sec-head h2{font-size:30px}
.hero h1{font-size:34px}
.hero .sub{font-size:17px}
.g3,.g4,.g2{grid-template-columns:1fr}
.article{padding:26px 20px}
.article h1{font-size:26px}
.sys-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.hero-stats{gap:22px}
}
@media(max-width:480px){
.container{padding:0 18px}
.hero h1{font-size:30px}
.btn-lg{width:100%}
.hero-cta .btn{flex:1}
.nav-actions .btn-ghost{display:none}
.article-nav{flex-direction:column}
}