:root{
  --gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
  --blue:#2980FE;
  --blue-dark:#1768E8;
  --text:#222833;
  --muted:#667085;
  --light:#F6F8FC;
  --line:#E6EAF2;
  --card:#FFFFFF;
  --deep:#151C2E;
  --soft-blue:#EEF5FF;
  --radius:24px;
  --shadow:0 18px 50px rgba(29,55,98,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-wrap{width:min(1180px,calc(100% - 28px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;min-height:70px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#172033;font-size:18px;white-space:nowrap}.logo-img{width:42px;height:42px;border-radius:12px;object-fit:cover}.site-nav{display:none;gap:6px;align-items:center}.site-nav a{padding:9px 12px;border-radius:999px;font-size:14px;color:#465061}.site-nav a:hover,.site-nav a.active{background:var(--soft-blue);color:var(--blue)}
.nav-toggle{position:absolute;opacity:0}.nav-toggle-label{display:flex;flex-direction:column;gap:5px;padding:10px;border:1px solid var(--line);border-radius:12px}.nav-toggle-label span{width:22px;height:2px;background:#243044;border-radius:2px}.nav-toggle:checked~.site-nav{display:flex;position:absolute;left:14px;right:14px;top:70px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:12px}.nav-toggle:checked~.site-nav a{padding:12px 14px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 24px;border-radius:999px;background:var(--blue);color:#fff!important;font-weight:800;box-shadow:0 12px 28px rgba(41,128,254,.24);transition:.2s ease}.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.eyebrow,.category-badge{display:inline-flex;align-items:center;border-radius:999px;padding:6px 12px;background:rgba(41,128,254,.10);color:var(--blue);font-weight:800;font-size:13px}.section-title{font-size:30px;line-height:1.25;margin:0 0 12px}.section-desc{color:var(--muted);margin:0 0 24px}.section-pad{padding:64px 0}.muted{color:var(--muted)}.gradient-bg{background:var(--gradient)}
.connection-workspace-hero{padding:48px 0 54px;background:var(--gradient);color:#fff;position:relative;overflow:hidden}.connection-workspace-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 78% 20%,rgba(255,255,255,.28),transparent 30%),radial-gradient(circle at 8% 70%,rgba(255,255,255,.18),transparent 28%)}.hero-grid{position:relative;display:grid;gap:28px;align-items:center}.hero-copy h1{font-size:38px;line-height:1.16;margin:14px 0 16px;letter-spacing:-.5px}.hero-copy p{font-size:17px;color:rgba(255,255,255,.86);margin:0 0 22px}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.hero-tags span{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.26);padding:7px 12px;border-radius:999px;font-size:13px}.workspace-visual{position:relative;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.24);border-radius:32px;padding:18px;box-shadow:0 22px 70px rgba(22,38,92,.24)}.workspace-visual img{border-radius:24px;background:#fff}.status-panel{background:#fff;color:var(--text);border-radius:22px;padding:16px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.65)}.workspace-visual .status-panel{margin-top:14px}.status-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}.status-row:last-child{border-bottom:0}.status-key{color:var(--muted);font-size:13px}.status-value{font-weight:800}.signal{display:inline-flex;width:10px;height:10px;background:#2FD27C;border-radius:50%;box-shadow:0 0 0 6px rgba(47,210,124,.15)}
.quick-task-entries{margin-top:-26px;position:relative;z-index:2}.quick-task-grid{display:grid;gap:14px}.task-entry,.task-card,.capability-card,.info-card,.risk-card,.faq-item,.step-card,.article-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 12px 34px rgba(20,35,70,.06)}.task-entry small,.task-card small,.capability-card small{display:inline-flex;color:var(--blue);font-weight:800;margin-bottom:8px}.task-entry h3,.task-card h3,.capability-card h3,.info-card h3,.risk-card h3,.step-card h3{margin:0 0 8px;font-size:20px}.task-entry p,.task-card p,.capability-card p,.info-card p,.risk-card p,.step-card p{margin:0;color:var(--muted)}.text-link{display:inline-flex;margin-top:14px;color:var(--blue);font-weight:800}.text-link:hover{color:var(--blue-dark)}
.connection-capability-overview{background:var(--light)}.capability-grid{display:grid;gap:16px}.capability-card.featured{background:linear-gradient(135deg,#fff 0%,#F1F6FF 100%);border-color:#DCE8FF}.capability-card .tag{display:inline-flex;border-radius:999px;background:#EEF5FF;color:var(--blue);padding:5px 10px;font-weight:800;font-size:12px;margin-bottom:10px}.split-section{display:grid;gap:26px;align-items:center}.feature-panel{background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)}.feature-panel img{border-radius:26px}.check-list{padding:0;margin:18px 0 0;list-style:none}.check-list li{position:relative;padding-left:24px;margin:8px 0;color:#405066}.check-list li:before{content:"";position:absolute;left:0;top:.65em;width:9px;height:9px;border-radius:50%;background:var(--blue)}.encrypted-tunnel-section{background:linear-gradient(180deg,#fff 0%,#F7FAFF 100%)}.security-grid,.scenario-grid,.risk-grid,.faq-grid,.info-grid{display:grid;gap:16px}.security-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px}.route-optimization-section,.connection-checkup-section{background:#F7F9FD}.route-panel{background:#fff;border:1px solid var(--line);border-radius:34px;overflow:hidden;box-shadow:var(--shadow)}.route-panel .route-content{padding:24px}.line-status{display:grid;gap:10px;margin-top:16px}.line-status div{display:flex;justify-content:space-between;background:#F5F8FE;border:1px solid var(--line);padding:12px 14px;border-radius:16px}.device-stack{display:grid;gap:14px}.device-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px}.data-boundary-section{background:#fff}.scenario-card{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden}.scenario-card .scenario-content{padding:18px}.process-steps{display:grid;gap:14px;counter-reset:step}.step-card{position:relative;padding-top:48px}.step-card:before{counter-increment:step;content:counter(step);position:absolute;top:18px;left:22px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:800}.risk-card{border-left:4px solid var(--blue)}.risk-card strong{display:block;color:#172033;margin-bottom:6px}.cta-section{padding:58px 0;background:var(--gradient);color:#fff;text-align:center;border-radius:34px;margin:42px auto}.cta-section p{color:rgba(255,255,255,.84);max-width:720px;margin:0 auto 22px}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}
.page-hero{background:linear-gradient(180deg,#F4F7FF 0%,#fff 100%);padding:48px 0 26px}.page-hero h1{font-size:34px;line-height:1.2;margin:12px 0 12px}.page-hero p{color:var(--muted);max-width:760px;margin:0}.article-layout{display:grid;gap:22px;padding:32px 0 64px}.article-main{display:grid;gap:18px}.article-card h2{font-size:24px;margin:0 0 10px}.article-card p{color:#4A5568;margin:0 0 12px}.aside-panel{background:#F6F8FC;border:1px solid var(--line);border-radius:28px;padding:22px;align-self:start}.aside-panel h3{margin:0 0 10px}.aside-panel a{display:block;color:var(--blue);font-weight:800;margin-top:10px}.download-panel{text-align:center;background:#fff;border:1px solid var(--line);border-radius:34px;padding:30px;box-shadow:var(--shadow)}.download-steps{display:grid;gap:14px;margin-top:24px}.download-steps .step-card{box-shadow:none}.faq-page{padding:40px 0 70px}.site-footer{background:#172033;color:#D7DEEB;padding:46px 0 0}.footer-grid{display:grid;gap:24px}.footer-brand{font-size:22px;font-weight:900;color:#fff;margin-bottom:8px}.site-footer p{color:#AEB8CB;margin:0}.site-footer h3{color:#fff;margin:0 0 10px}.site-footer a{display:block;color:#D7DEEB;margin:7px 0}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.1);padding:18px;margin-top:32px;color:#AEB8CB;font-size:14px}.only-one{margin-top:18px}
@media (min-width:700px){.quick-task-grid{grid-template-columns:repeat(2,1fr)}.capability-grid,.security-grid,.scenario-grid,.risk-grid,.faq-grid,.info-grid{grid-template-columns:repeat(2,1fr)}.process-steps,.download-steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:2fr 1fr 1fr}.section-title{font-size:36px}.hero-copy h1{font-size:48px}}
@media (min-width:980px){.nav-toggle-label{display:none}.site-nav{display:flex}.hero-grid{grid-template-columns:1.02fr .98fr}.connection-workspace-hero{padding:72px 0 84px}.workspace-visual .status-panel{position:absolute;right:-18px;bottom:20px;width:260px;margin:0}.quick-task-grid{grid-template-columns:repeat(4,1fr)}.capability-grid{grid-template-columns:repeat(6,1fr)}.capability-card{grid-column:span 2}.capability-card.featured{grid-column:span 3;min-height:230px}.split-section{grid-template-columns:1fr 1fr}.route-panel{display:grid;grid-template-columns:1fr 1fr;align-items:center}.security-grid,.scenario-grid,.risk-grid{grid-template-columns:repeat(3,1fr)}.info-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.article-layout{grid-template-columns:minmax(0,1fr) 320px}.page-hero h1{font-size:44px}.section-pad{padding:82px 0}.cta-section{width:min(1120px,calc(100% - 32px))}}
@media (max-width:420px){.container,.nav-wrap{width:min(100% - 24px,1120px)}.hero-copy h1{font-size:31px}.section-title{font-size:26px}.download-btn{width:100%;padding:13px 18px}.task-entry,.task-card,.capability-card,.info-card,.risk-card,.faq-item,.step-card,.article-card{padding:18px}.cta-section{border-radius:24px;margin-left:12px;margin-right:12px}.site-nav{max-height:75vh;overflow:auto}}