:root{--primary:#6366f1;--primary2:#8b5cf6;--grad:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%);--dark:#0f172a;--dark2:#1e293b;--txt:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--card:#ffffff;--radius:16px;--shadow:0 10px 40px rgba(15,23,42,.08);--shadow-lg:0 20px 60px rgba(99,102,241,.18)}
*{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","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--txt);background:var(--bg);line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul,ol{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{position:relative}
.section{padding:96px 0}
.section-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;background:rgba(99,102,241,.1);color:var(--primary);font-weight:600;font-size:13px;letter-spacing:.5px;margin-bottom:18px}
.section-title{font-size:38px;line-height:1.25;font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.section-desc{font-size:17px;color:var(--muted);max-width:680px;line-height:1.8}
.center{text-align:center}
.center .section-desc{margin:0 auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:12px;font-weight:600;font-size:15px;transition:all .25s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(99,102,241,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(99,102,241,.45)}
.btn-ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-ghost:hover{background:rgba(99,102,241,.08)}
.btn-white{background:#fff;color:var(--primary);box-shadow:0 8px 24px rgba(0,0,0,.18)}
.btn-white:hover{transform:translateY(-2px)}
.btn-sm{padding:9px 20px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:background .3s,box-shadow .3s,padding .3s;padding:16px 0;background:rgba(255,255,255,.7);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.nav.scrolled{background:rgba(15,23,42,.86);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 4px 24px rgba(0,0,0,.18);padding:10px 0}
.nav-inner{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:var(--txt)}
.nav.scrolled .nav-logo{color:#fff}
.nav-logo img{width:38px;height:38px;border-radius:10px;object-fit:cover}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:5px;padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--txt);transition:all .2s}
.nav.scrolled .nav-link{color:#e2e8f0}
.nav-link:hover{color:var(--primary)}
.nav.scrolled .nav-link:hover{color:#fff}
.nav-link .caret{transition:transform .3s;font-size:11px}
.nav-item:hover .caret{transform:rotate(180deg)}
.dropdown{position:absolute;top:100%;left:0;min-width:220px;background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);padding:10px;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s;z-index:100}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:10px 14px;border-radius:10px;font-size:14px;color:#334155;transition:all .15s}
.dropdown a:hover{background:#f1f5f9;color:var(--primary);padding-left:18px}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-burger{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:10px}
.nav-burger span{display:block;width:22px;height:2px;background:var(--txt);border-radius:2px;transition:all .3s}
.nav.scrolled .nav-burger span{background:#fff}
.nav-burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.active span:nth-child(2){opacity:0}
.nav-burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hero{min-height:100vh;display:flex;align-items:center;padding:140px 0 90px;background:radial-gradient(1200px 600px at 80% -10%,rgba(139,92,246,.16),transparent),radial-gradient(900px 500px at -10% 30%,rgba(99,102,241,.14),transparent),var(--bg)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-title{font-size:52px;line-height:1.15;font-weight:900;letter-spacing:-1px;margin-bottom:20px}
.hero-title .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:19px;color:var(--muted);margin-bottom:30px;line-height:1.8}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap}
.hero-stat .num{font-size:32px;font-weight:800;color:var(--primary)}
.hero-stat .lbl{font-size:14px;color:var(--muted)}
.simulator{background:var(--dark);border-radius:24px;padding:26px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.simulator::before{content:"";position:absolute;top:-60px;right:-60px;width:200px;height:200px;background:var(--grad);filter:blur(90px);opacity:.5}
.sim-head{display:flex;align-items:center;gap:8px;margin-bottom:18px;position:relative;z-index:1}
.sim-dot{width:12px;height:12px;border-radius:50%}
.sim-dot.r{background:#f87171}.sim-dot.y{background:#fbbf24}.sim-dot.g{background:#34d399}
.sim-title{color:#cbd5e1;font-size:13px;margin-left:auto}
.sim-board{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:16px;position:relative;z-index:1}
.sim-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.sim-issue{color:#94a3b8;font-size:12px}
.sim-balls{display:flex;gap:6px;flex-wrap:wrap}
.sim-ball{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:#fff;cursor:pointer;transition:transform .2s;position:relative}
.sim-ball:hover{transform:scale(1.15)}
.sim-ball.red{background:linear-gradient(135deg,#ef4444,#b91c1c)}
.sim-ball.blue{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}
.sim-ball.green{background:linear-gradient(135deg,#22c55e,#15803d)}
.sim-chart{margin-top:16px;position:relative;z-index:1}
.sim-chart svg{width:100%;height:auto}
.sim-ctrl{display:flex;gap:10px;margin-top:16px;position:relative;z-index:1}
.sim-ctrl .btn{flex:1}
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.cards-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:all .3s;position:relative}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(99,102,241,.3)}
.card-icon{width:54px;height:54px;border-radius:14px;background:rgba(99,102,241,.1);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.steps{display:flex;gap:24px;position:relative}
.step{flex:1;text-align:center;position:relative}
.step-num{width:64px;height:64px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;margin:0 auto 18px;box-shadow:0 8px 24px rgba(99,102,241,.35)}
.step h3{font-size:18px;font-weight:700;margin-bottom:8px}
.step p{color:var(--muted);font-size:14px}
.stats-band{background:var(--grad);border-radius:24px;padding:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;color:#fff}
.stats-band .num{font-size:40px;font-weight:900}
.stats-band .lbl{font-size:15px;opacity:.9}
.nodes-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}
.node-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;align-items:center;gap:12px;transition:all .25s}
.node-card:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.node-flag{font-size:26px}
.node-card .nm{font-weight:600;font-size:15px}
.node-card .st{font-size:12px;color:#22c55e;display:flex;align-items:center;gap:4px}
.node-card .st::before{content:"";width:7px;height:7px;border-radius:50%;background:#22c55e}
.tags{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.tag{padding:12px 24px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:600;font-size:15px;color:#334155;transition:all .25s;box-shadow:var(--shadow)}
.tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-3px)}
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px;display:flex;flex-direction:column;transition:all .3s;position:relative}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.plan.featured{background:var(--dark);color:#fff;border:none;box-shadow:var(--shadow-lg);transform:scale(1.03)}
.plan.featured:hover{transform:scale(1.03) translateY(-6px)}
.plan .badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;padding:5px 18px;border-radius:999px;font-size:13px;font-weight:700}
.plan-name{font-size:18px;font-weight:700;margin-bottom:6px}
.plan-price{font-size:44px;font-weight:900;margin:14px 0}
.plan-price small{font-size:16px;font-weight:500;opacity:.7}
.plan ul{margin:20px 0 28px;flex:1}
.plan li{padding:9px 0;font-size:15px;display:flex;gap:10px;align-items:flex-start;border-bottom:1px dashed var(--line)}
.plan.featured li{border-color:rgba(255,255,255,.15)}
.plan li::before{content:"✓";color:#22c55e;font-weight:800;flex-shrink:0}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.faq-q{width:100%;padding:20px 24px;display:flex;justify-content:space-between;align-items:center;font-size:17px;font-weight:600;text-align:left;color:var(--txt)}
.faq-q .icon{transition:transform .3s;color:var(--primary);font-size:22px;flex-shrink:0}
.faq-item.open .faq-q .icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 22px;color:var(--muted);font-size:15px}
.faq-a ol{padding-left:20px;list-style:decimal;margin-top:8px}
.faq-a ol li{margin:6px 0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--card);border-radius:16px;overflow:hidden;border:1px solid var(--line);transition:all .3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card img{width:100%;height:180px;object-fit:cover}
.news-card .body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-card .date{font-size:13px;color:var(--muted);margin-bottom:8px}
.news-card h3{font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.5}
.news-card p{color:var(--muted);font-size:14px;flex:1}
.news-card .more{color:var(--primary);font-weight:600;font-size:14px;margin-top:14px}
.testimonials{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.t-card{background:var(--card);border-radius:16px;padding:28px;border:1px solid var(--line)}
.t-stars{color:#fbbf24;font-size:18px;margin-bottom:14px;letter-spacing:2px}
.t-text{color:#334155;font-size:15px;line-height:1.8;margin-bottom:18px}
.t-user{display:flex;align-items:center;gap:12px}
.t-avatar{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}
.t-user .nm{font-weight:600;font-size:15px}
.t-user .role{font-size:13px;color:var(--muted)}
.cta{background:radial-gradient(800px 400px at 50% -20%,rgba(139,92,246,.35),transparent),var(--dark);border-radius:28px;padding:70px 40px;text-align:center;color:#fff}
.cta h2{font-size:40px;font-weight:900;margin-bottom:16px}
.cta p{color:#cbd5e1;font-size:18px;margin-bottom:32px}
.footer{background:var(--dark);color:#94a3b8;padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:50px}
.footer h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer a{display:block;padding:6px 0;font-size:14px;transition:color .2s}
.footer a:hover{color:#fff}
.footer-brand{font-size:15px;line-height:1.8}
.footer-brand .logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:800;margin-bottom:16px}
.footer-brand .logo img{width:36px;height:36px;border-radius:9px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px}
.page-hero{padding:150px 0 70px;background:radial-gradient(1000px 500px at 50% -20%,rgba(139,92,246,.16),transparent),var(--bg);text-align:center}
.page-hero h1{font-size:44px;font-weight:900;margin-bottom:16px}
.page-hero p{color:var(--muted);font-size:18px;max-width:680px;margin:0 auto}
.breadcrumb{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--muted);margin:20px 0}
.breadcrumb a{color:var(--primary)}
.breadcrumb .sep{color:#cbd5e1}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;display:flex;flex-direction:column;transition:all .3s}
.dl-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.dl-card h3{font-size:20px;font-weight:800;margin-bottom:4px}
.dl-card .ver{color:var(--muted);font-size:13px;margin-bottom:14px}
.dl-card .size{font-size:26px;font-weight:800;color:var(--primary);margin-bottom:16px}
.dl-card ul{margin-bottom:22px;flex:1}
.dl-card li{padding:7px 0;font-size:14px;display:flex;gap:8px;color:#475569}
.dl-card li::before{content:"✓";color:#22c55e;font-weight:800}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.req-item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.req-item .k{font-size:14px;color:var(--muted);margin-bottom:6px}
.req-item .v{font-size:16px;font-weight:700}
.article{max-width:800px;margin:0 auto}
.article-meta{display:flex;gap:16px;align-items:center;color:var(--muted);font-size:14px;margin-bottom:20px}
.article-meta .cat{background:rgba(99,102,241,.1);color:var(--primary);padding:4px 14px;border-radius:999px;font-weight:600}
.article h1{font-size:38px;font-weight:900;line-height:1.3;margin-bottom:16px}
.article h2{font-size:26px;font-weight:800;margin:36px 0 14px}
.article p{margin-bottom:18px;font-size:16px;color:#334155;line-height:1.9}
.article img{border-radius:16px;margin:24px 0;width:100%}
.article .lead{font-size:19px;color:#475569;font-weight:500;line-height:1.9}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:50px;padding-top:26px;border-top:1px solid var(--line)}
.article-nav a{font-size:14px;color:var(--muted);transition:color .2s}
.article-nav a:hover{color:var(--primary)}
.error-page{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:radial-gradient(900px 500px at 50% 0%,rgba(139,92,246,.16),transparent),var(--bg);padding:24px}
.error-page .code{font-size:140px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.error-page h1{font-size:30px;margin:10px 0 14px}
.error-page p{color:var(--muted);font-size:17px;margin-bottom:30px}
.sitemap{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:left}
.sitemap-group{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px}
.sitemap-group h3{font-size:17px;font-weight:700;margin-bottom:14px;color:var(--primary)}
.sitemap-group a{display:block;padding:7px 0;color:#334155;font-size:14px;border-bottom:1px dashed #f1f5f9}
.sitemap-group a:hover{color:var(--primary)}
@media(max-width:992px){.nav-menu{position:fixed;top:0;right:-100%;width:290px;height:100vh;background:#fff;flex-direction:column;align-items:flex-start;padding:90px 24px 30px;gap:4px;transition:right .3s;box-shadow:-10px 0 40px rgba(0,0,0,.15);z-index:999}
.nav-menu.open{right:0}
.nav-link{width:100%;justify-content:space-between;font-size:17px;color:var(--txt)!important;padding:14px 10px}
.nav-item{width:100%}
.dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;display:none;padding:0 0 0 12px;min-width:auto}
.dropdown.open{display:block}
.nav-burger{display:flex}
.nav-actions .btn-ghost{display:none}
.hero{padding-top:110px}
.hero-grid{grid-template-columns:1fr;gap:44px}
.hero-title{font-size:42px}
.cards-grid{grid-template-columns:repeat(2,1fr)}
.steps{flex-direction:column}
.stats-band{grid-template-columns:repeat(2,1fr)}
.nodes-grid{grid-template-columns:repeat(3,1fr)}
.pricing{grid-template-columns:1fr;max-width:420px;margin:0 auto}
.plan.featured{transform:none}
.news-grid,.testimonials{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.sitemap{grid-template-columns:repeat(2,1fr)}
.dl-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.section{padding:64px 0}
.section-title{font-size:30px}
.hero-title{font-size:34px}
.cards-grid,.cards-grid.cols-4{grid-template-columns:1fr}
.nodes-grid{grid-template-columns:repeat(2,1fr)}
.news-grid,.testimonials,.dl-grid,.req-grid{grid-template-columns:1fr}
.stats-band{grid-template-columns:1fr 1fr;padding:30px}
.cta h2{font-size:30px}
.footer-grid{grid-template-columns:1fr}
.sitemap{grid-template-columns:1fr}
.page-hero h1{font-size:34px}
.article h1{font-size:28px}}
@media(max-width:480px){.hero-stats{gap:24px}
.hero-stat .num{font-size:26px}
.hero-btns .btn{width:100%}
.stats-band{grid-template-columns:1fr}
.nodes-grid{grid-template-columns:1fr}
.section-title{font-size:26px}
.cta{padding:50px 24px}}