:root{
  --primary:#2563EB;
  --primary-dark:#1D4ED8;
  --accent:#22D3EE;
  --dark:#0B1220;
  --dark-2:#0F172A;
  --green:#10B981;
  --amber:#F59E0B;
  --text:#1E293B;
  --muted:#64748B;
  --bg:#FFFFFF;
  --bg-soft:#F1F5F9;
  --border:#E2E8F0;
  --radius:18px;
  --shadow:0 12px 40px rgba(15,23,42,.08);
  --shadow-lg:0 24px 70px rgba(15,23,42,.16);
  --font-serif:"Georgia","Times New Roman","Songti SC","STSong","Noto Serif SC",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3,.serif{font-family:var(--font-serif)}
section{padding:96px 0}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.section-head .eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);font-weight:700;margin-bottom:14px}
.section-head h2{font-size:40px;line-height:1.2;color:var(--dark);margin-bottom:16px}
.section-head p{font-size:17px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:999px;font-size:15px;font-weight:600;transition:.25s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 10px 30px rgba(37,99,235,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(37,99,235,.4)}
.btn-ghost{border:1px solid var(--border);color:var(--text);background:#fff}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-light{background:#fff;color:var(--primary);box-shadow:0 10px 30px rgba(0,0,0,.18)}
.btn-outline-light{border:1px solid rgba(255,255,255,.4);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}

.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:40px;height:40px;border-radius:10px}
.brand .name{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--dark)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:15px;color:var(--muted);transition:.2s}
.nav-links a:hover{color:var(--primary)}
.nav-cta{display:flex;align-items:center;gap:12px}

.hero{position:relative;background:radial-gradient(1200px 600px at 70% -10%,#1e3a8a 0%,var(--dark) 55%);color:#fff;overflow:hidden;padding:110px 0 120px}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(34,211,238,.12),transparent 40%,rgba(37,99,235,.15))}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero h1{font-size:54px;line-height:1.15;margin-bottom:22px;font-weight:800}
.hero h1 .grad{background:linear-gradient(90deg,var(--accent),#60A5FA);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{font-size:18px;color:rgba(255,255,255,.8);max-width:540px;margin-bottom:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px}
.hero-badges span{font-size:13px;padding:7px 15px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16)}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:44px}
.hero-stats .num{font-family:var(--font-serif);font-size:32px;font-weight:700;color:#fff}
.hero-stats .lbl{font-size:13px;color:rgba(255,255,255,.65)}

.simulator{background:rgba(15,23,42,.7);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:22px;backdrop-filter:blur(8px);box-shadow:var(--shadow-lg)}
.sim-top{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.sim-top .dot{width:11px;height:11px;border-radius:50%}
.sim-top .r{background:#F87171}.sim-top .y{background:#FBBF24}.sim-top .g{background:#34D399}
.sim-title{flex:1;text-align:center;font-size:13px;color:rgba(255,255,255,.7)}
.sim-status{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.06);border-radius:14px;padding:18px 20px;margin-bottom:18px}
.sim-status .st{font-size:14px;color:rgba(255,255,255,.75)}
.sim-status .state{font-size:15px;font-weight:700;color:var(--green)}
.sim-gauge{position:relative;width:150px;height:150px;margin:0 auto 20px}
.sim-gauge svg{transform:rotate(-90deg)}
.sim-gauge .val{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.sim-gauge .val b{font-family:var(--font-serif);font-size:34px;color:#fff}
.sim-gauge .val span{font-size:12px;color:rgba(255,255,255,.6)}
.sim-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.sim-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:14px}
.sim-card .k{font-size:12px;color:rgba(255,255,255,.55);margin-bottom:6px}
.sim-card .v{font-size:16px;font-weight:600;color:#fff}
.sim-server{background:rgba(255,255,255,.05);border-radius:12px;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.sim-server .srv{display:flex;align-items:center;gap:10px;font-size:14px;color:#fff}
.sim-server .flag{width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,#22D3EE,#2563EB);display:inline-flex;align-items:center;justify-content:center;font-size:12px}
.sim-connect{width:100%;padding:16px;border-radius:14px;border:none;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:16px;font-weight:700;cursor:pointer;transition:.25s}
.sim-connect:hover{filter:brightness(1.08)}
.sim-connect.off{background:rgba(255,255,255,.14)}
.sim-note{text-align:center;font-size:12px;color:rgba(255,255,255,.5);margin-top:12px}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;transition:.25s}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature .icon{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,#EFF6FF,#E0F2FE);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--primary)}
.feature h3{font-size:20px;margin-bottom:12px;color:var(--dark)}
.feature p{font-size:15px;color:var(--muted)}

.notice{background:var(--bg-soft)}
.notice-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.notice-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.notice-card .tag{display:inline-block;font-size:12px;padding:4px 12px;border-radius:999px;background:#EFF6FF;color:var(--primary);margin-bottom:14px}
.notice-card h3{font-size:18px;margin-bottom:10px;line-height:1.4}
.notice-card h3 a{transition:.2s}
.notice-card h3 a:hover{color:var(--primary)}
.notice-card .date{font-size:13px;color:var(--muted)}

.trust{background:var(--dark);color:#fff}
.trust .section-head h2{color:#fff}
.trust .section-head p{color:rgba(255,255,255,.65)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item{text-align:center;padding:28px 16px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius)}
.trust-item .num{font-family:var(--font-serif);font-size:36px;font-weight:700;color:var(--accent)}
.trust-item .lbl{font-size:14px;color:rgba(255,255,255,.7);margin-top:6px}

.news-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:40px;flex-wrap:wrap}
.news-tabs button{padding:10px 22px;border-radius:999px;border:1px solid var(--border);background:#fff;font-size:14px;cursor:pointer;color:var(--muted);transition:.2s}
.news-tabs button.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-card img{height:180px;width:100%;object-fit:cover}
.news-card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-card .cat{font-size:12px;color:var(--primary);margin-bottom:10px}
.news-card h3{font-size:17px;line-height:1.45;margin-bottom:10px}
.news-card h3 a:hover{color:var(--primary)}
.news-card .date{font-size:13px;color:var(--muted);margin-top:auto}

.pricing{background:var(--bg-soft)}
.pricing-table{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.pricing-table table{width:100%;border-collapse:collapse;font-size:15px}
.pricing-table th,.pricing-table td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--border)}
.pricing-table th{background:var(--dark);color:#fff;font-weight:600}
.pricing-table th:nth-child(1){background:var(--dark-2)}
.pricing-table td.yes{color:var(--green);font-weight:700}
.pricing-table td.no{color:#CBD5E1}
.pricing-table tr:hover td{background:#F8FAFC}

.download{background:linear-gradient(160deg,var(--dark),#172554);color:#fff}
.download .section-head h2{color:#fff}
.download .section-head p{color:rgba(255,255,255,.65)}
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:26px 18px;text-align:center;transition:.25s}
.dl-item:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.dl-item .os{width:56px;height:56px;margin:0 auto 14px;border-radius:16px;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#fff}
.dl-item h3{font-size:16px;margin-bottom:6px}
.dl-item p{font-size:12px;color:rgba(255,255,255,.6);margin-bottom:16px}
.dl-item .btn{width:100%}

.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;background:#fff;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:22px 26px;font-size:17px;font-weight:600;display:flex;align-items:center;justify-content:space-between;color:var(--dark)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:24px;color:var(--primary);transition:.2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 26px 24px;color:var(--muted);font-size:15px}
.faq-item .faq-body ol{padding-left:20px}
.faq-item .faq-body li{margin-bottom:8px}

.cta{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:90px 0;text-align:center}
.cta h2{font-size:40px;margin-bottom:16px}
.cta p{font-size:17px;margin-bottom:30px;opacity:.92}
.footer{background:var(--dark);color:rgba(255,255,255,.65);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer a{display:block;font-size:14px;margin-bottom:10px;color:rgba(255,255,255,.6);transition:.2s}
.footer a:hover{color:#fff}
.footer .desc{font-size:14px;max-width:300px;margin-top:14px;line-height:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:13px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}

.breadcrumb{background:var(--bg-soft);border-bottom:1px solid var(--border);padding:16px 0}
.breadcrumb nav{font-size:13px;color:var(--muted)}
.breadcrumb ol{list-style:none;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#CBD5E1}
.breadcrumb a{color:var(--muted);transition:.2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb li[aria-current]{color:var(--dark);font-weight:700}

.page-hero{background:radial-gradient(900px 400px at 50% -10%,#1e3a8a 0%,var(--dark) 60%);color:#fff;padding:80px 0;text-align:center}
.page-hero h1{font-size:44px;margin-bottom:14px}
.page-hero p{color:rgba(255,255,255,.75);max-width:640px;margin:0 auto}

.article{max-width:820px;margin:0 auto;padding:70px 24px}
.article .meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--muted);margin-bottom:22px}
.article .meta .cat{color:var(--primary);font-weight:600}
.article h1{font-size:36px;line-height:1.3;margin-bottom:22px;color:var(--dark)}
.article .lead{font-size:18px;color:var(--muted);border-left:3px solid var(--primary);padding-left:18px;margin-bottom:30px}
.article h2{font-size:24px;margin:36px 0 14px;color:var(--dark)}
.article p{font-size:16px;color:var(--text);margin-bottom:18px;line-height:1.9}
.article img{border-radius:14px;margin:24px 0}
.article .fig{font-size:13px;color:var(--muted);text-align:center;margin:-12px 0 24px}
.article-nav{display:flex;justify-content:space-between;gap:20px;margin-top:50px;padding-top:30px;border-top:1px solid var(--border)}
.article-nav a{font-size:14px;color:var(--muted);transition:.2s}
.article-nav a:hover{color:var(--primary)}
.back-link{display:inline-flex;align-items:center;gap:6px;margin-top:30px;font-size:14px;color:var(--primary)}

.news-list{display:grid;grid-template-columns:1fr;gap:20px;max-width:920px;margin:0 auto}
.news-list .item{display:flex;gap:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:.25s}
.news-list .item:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.news-list .item img{width:220px;height:140px;object-fit:cover;border-radius:12px;flex-shrink:0}
.news-list .item .info h3{font-size:19px;margin-bottom:8px;line-height:1.4}
.news-list .item .info h3 a:hover{color:var(--primary)}
.news-list .item .info p{font-size:14px;color:var(--muted);margin-bottom:8px}
.news-list .item .info .d{font-size:13px;color:var(--muted)}

.sitemap{max-width:900px;margin:0 auto;padding:70px 24px}
.sitemap h2{font-size:24px;margin:34px 0 16px;color:var(--dark)}
.sitemap .link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.sitemap .link-grid a{background:#fff;border:1px solid var(--border);border-radius:10px;padding:14px 16px;font-size:14px;transition:.2s}
.sitemap .link-grid a:hover{border-color:var(--primary);color:var(--primary)}

.nf{text-align:center;padding:120px 24px}
.nf .code{font-family:var(--font-serif);font-size:120px;font-weight:800;color:var(--primary);line-height:1}
.nf h1{font-size:30px;margin:20px 0 12px}
.nf p{color:var(--muted);margin-bottom:30px}

@media(max-width:960px){
  .hero-grid,.pricing-grid{grid-template-columns:1fr}
  .features-grid,.notice-wrap,.trust-grid,.news-grid,.dl-grid,.footer-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:40px}
  .nav-links{display:none}
}
@media(max-width:600px){
  .features-grid,.notice-wrap,.trust-grid,.news-grid,.dl-grid,.footer-grid,.sim-row{grid-template-columns:1fr}
  .news-list .item{flex-direction:column}
  .news-list .item img{width:100%;height:auto}
}