:root{
    --navy-0:#0F1B33;
    --navy-1:#14213D;
    --navy-2:#1D3159;
    --navy-soft:#EEF2F9;
    --line:#E3E8F2;
    --white:#FFFFFF;
    --bg-alt:#F6F8FC;
    --text-0:#14213D;
    --text-1:#4A5670;
    --text-2:#8993AC;
    --orange:#FF6A1A;
    --orange-hi:#FF8A42;
    --orange-glow: 0 0 0 4px rgba(255,106,26,0.14), 0 8px 20px -6px rgba(255,106,26,0.55);
    --mono: 'JetBrains Mono', ui-monospace, monospace;
    --sans: 'Inter', system-ui, sans-serif;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--white);
    color:var(--text-0);
    font-family:var(--sans);
    line-height:1.6;
  }
  a{color:inherit; text-decoration:none;}
  .wrap{max-width:1180px; margin:0 auto; padding:0 28px;}
  .eyebrow{
    font-family:var(--mono); font-size:12px; letter-spacing:0.14em; text-transform:uppercase;
    color:var(--orange); display:flex; align-items:center; gap:8px; margin-bottom:14px; font-weight:700;
  }
  .eyebrow::before{content:""; width:7px; height:7px; background:var(--orange); border-radius:1px; box-shadow:0 0 8px rgba(255,106,26,0.7);}

  /* ===== NAV ===== */
  header{
    position:sticky; top:0; z-index:100;
    background:var(--navy-1);
    border-bottom:1px solid var(--navy-2);
  }
  nav{display:flex; align-items:center; justify-content:space-between; padding:16px 28px; max-width:1180px; margin:0 auto;}
  .logo{display:flex; align-items:center; gap:10px; font-family:var(--mono); font-weight:700; font-size:17px; color:var(--white);}
  .logo .dot{width:9px; height:9px; background:var(--orange); border-radius:50%; box-shadow:0 0 10px 2px rgba(255,106,26,0.8);}
  .logo .tag{color:#8FA0C9; font-weight:400; font-size:11px; margin-left:6px; letter-spacing:0.05em;}
  .navlinks{display:flex; gap:32px; font-size:14px; color:#C3CEE6;}
  .navlinks a{transition:color .15s;}
  .navlinks a:hover{color:var(--orange-hi);}
  .nav-cta{
    font-family:var(--mono); font-size:13px; font-weight:700; color:var(--white);
    background:var(--orange); padding:10px 20px; border-radius:4px; letter-spacing:0.02em;
    box-shadow:var(--orange-glow);
  }
  .nav-cta:hover{background:var(--orange-hi);}

  /* ===== HERO ===== */
  .hero{padding:80px 0 44px; position:relative; background:var(--white);}
  .hero h1{
    font-family:var(--mono); font-weight:700; font-size:44px; line-height:1.18;
    letter-spacing:-0.01em; color:var(--navy-1); max-width:820px;
  }
  .hero h1 .hl{color:var(--orange);}
  .hero p.lede{
    font-size:17px; color:var(--text-1); max-width:600px; margin-top:20px; line-height:1.7;
  }
  .hero-ctas{display:flex; gap:14px; margin-top:32px; flex-wrap:wrap;}
  .btn-primary{
    font-family:var(--mono); font-weight:700; font-size:14px; color:var(--white);
    background:var(--orange); padding:14px 28px; border-radius:4px;
    box-shadow:var(--orange-glow);
  }
  .btn-primary:hover{background:var(--orange-hi);}
  .btn-secondary{
    font-family:var(--mono); font-weight:600; font-size:14px; color:var(--navy-1);
    background:var(--white); padding:14px 28px; border-radius:4px; border:1.5px solid var(--line);
  }
  .btn-secondary:hover{border-color:var(--navy-1);}

  /* ===== TOPOLOGY DIAGRAM (signature element) ===== */
  .topo-frame{
    margin-top:56px; border:1px solid var(--line); border-radius:8px; background:var(--navy-1);
    overflow:hidden; box-shadow:0 20px 50px -20px rgba(20,33,61,0.35);
  }
  .topo-titlebar{
    display:flex; align-items:center; justify-content:space-between;
    padding:11px 18px; border-bottom:1px solid var(--navy-2); background:var(--navy-0);
  }
  .topo-titlebar .label{font-family:var(--mono); font-size:11px; color:#8FA0C9; letter-spacing:0.08em;}
  .topo-titlebar .dots{display:flex; gap:6px;}
  .topo-titlebar .dots span{width:8px; height:8px; border-radius:50%; background:var(--navy-2);}
  svg.topo{display:block; width:100%; height:auto;}
  .topo-node-label{font-family:var(--mono); font-size:11px; fill:#DCE4F5;}
  .topo-node-sub{font-family:var(--mono); font-size:9px; fill:#7387B3;}
  .topo-gw-label{font-family:var(--mono); font-size:13px; font-weight:700; fill:var(--white);}
  .packet{filter:drop-shadow(0 0 5px rgba(255,138,66,0.9));}

  /* ===== STAT STRIP ===== */
  .statstrip{background:var(--navy-1);}
  .statstrip .wrap{display:grid; grid-template-columns:repeat(4,1fr); padding:30px 28px;}
  .stat{text-align:left; border-left:1px solid var(--navy-2); padding-left:22px;}
  .stat:first-child{border-left:none; padding-left:0;}
  .stat .n{font-family:var(--mono); font-size:26px; font-weight:700; color:var(--orange);}
  .stat .l{font-size:12px; color:#9AACD1; margin-top:4px; letter-spacing:0.02em;}

  /* ===== SECTION SHARED ===== */
  section{padding:88px 0;}
  .sec-head{max-width:640px; margin-bottom:52px;}
  .sec-head h2{font-family:var(--mono); font-size:30px; font-weight:700; color:var(--navy-1); line-height:1.3;}
  .sec-head p{color:var(--text-1); margin-top:14px; font-size:15.5px;}

  /* ===== ARCHITECTURE / FEATURES ===== */
  .feat-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:8px; overflow:hidden;}
  .feat{background:var(--white); padding:30px 26px; transition:background .15s;}
  .feat:hover{background:var(--bg-alt);}
  .feat .fi{font-family:var(--mono); font-size:11px; color:var(--orange); letter-spacing:0.1em; margin-bottom:16px; font-weight:700;}
  .feat h3{font-family:var(--mono); font-size:16px; font-weight:700; color:var(--navy-1); margin-bottom:10px;}
  .feat p{font-size:14px; color:var(--text-1); line-height:1.7;}

  /* ===== SEGMENTS ===== */
  .seg-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
  .seg-card{
    border:1px solid var(--line); border-radius:8px; padding:28px; background:var(--white);
    position:relative; transition:border-color .15s, transform .15s, box-shadow .15s;
  }
  .seg-card:hover{border-color:var(--orange); transform:translateY(-3px); box-shadow:0 16px 32px -18px rgba(255,106,26,0.4);}
  .seg-card .tier{font-family:var(--mono); font-size:10px; color:var(--orange); letter-spacing:0.12em; margin-bottom:12px; font-weight:700;}
  .seg-card h3{font-family:var(--mono); font-size:19px; font-weight:700; margin-bottom:12px; color:var(--navy-1);}
  .seg-card p{font-size:14px; color:var(--text-1); margin-bottom:18px;}
  .seg-card ul{list-style:none; font-size:13px; color:var(--text-1);}
  .seg-card li{padding:6px 0; border-top:1px solid var(--line); display:flex; gap:8px;}
  .seg-card li::before{content:"›"; color:var(--orange); font-weight:700;}

  /* ===== CTA BAND ===== */
  .ctaband{
    border-radius:10px; padding:52px 44px;
    background:linear-gradient(120deg, var(--navy-1) 0%, var(--navy-0) 100%);
    display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:24px;
  }
  .ctaband h3{font-family:var(--mono); font-size:22px; color:var(--white);}
  .ctaband p{color:#9AACD1; margin-top:8px; font-size:14px;}

  /* ===== FOOTER ===== */
  footer{border-top:1px solid var(--line); padding:48px 0 32px; background:var(--bg-alt);}
  .footgrid{display:grid; grid-template-columns:1.2fr 1fr 1fr 1fr 1fr; gap:32px;}
  .footcol h4{font-family:var(--mono); font-size:12px; color:var(--text-2); letter-spacing:0.1em; margin-bottom:16px;}
  .footcol a{display:block; font-size:13.5px; color:var(--text-1); padding:5px 0;}
  .footcol a:hover{color:var(--orange);}
  .footbottom{
    margin-top:44px; padding-top:24px; border-top:1px solid var(--line);
    display:flex; justify-content:space-between; font-size:12.5px; color:var(--text-2); flex-wrap:wrap; gap:12px;
  }

  @media(max-width:860px){
    .hero h1{font-size:32px;}
    .navlinks{display:none;}
    .feat-grid, .seg-grid{grid-template-columns:1fr;}
    .statstrip .wrap{grid-template-columns:repeat(2,1fr); gap:20px;}
    .stat{border-left:none !important; padding-left:0 !important;}
    .footgrid{grid-template-columns:1fr 1fr;}
  }

  /* ===== LEGAL DOCUMENT PAGES ===== */
  .legal-hero{padding:52px 0 36px; background:var(--bg-alt); border-bottom:1px solid var(--line);}
  .legal-hero .eyebrow{margin-bottom:10px;}
  .legal-hero h1{font-family:var(--mono); font-size:32px; font-weight:700; color:var(--navy-1);}
  .legal-hero .meta{font-family:var(--mono); font-size:12px; color:var(--text-2); margin-top:12px;}
  .legal-layout{display:grid; grid-template-columns:230px 1fr; gap:56px; padding:52px 0 88px; align-items:start;}
  .legal-toc{position:sticky; top:92px; border-left:2px solid var(--line);}
  .legal-toc a{display:block; font-size:12.5px; color:var(--text-1); padding:6px 0 6px 16px; border-left:2px solid transparent; margin-left:-2px;}
  .legal-toc a:hover{color:var(--navy-1);}
  .legal-toc .toc-label{font-family:var(--mono); font-size:10px; letter-spacing:0.1em; color:var(--text-2); padding-left:16px; margin-bottom:6px; display:block;}
  .legal-body h2{font-family:var(--mono); font-size:19px; color:var(--navy-1); font-weight:700; margin:52px 0 16px; padding-top:28px; border-top:1px solid var(--line);}
  .legal-body h2:first-child{margin-top:0; padding-top:0; border-top:none;}
  .legal-body h3{font-family:var(--mono); font-size:14px; color:var(--navy-1); font-weight:700; margin:22px 0 10px;}
  .legal-body p{font-size:14.5px; color:var(--text-1); margin-bottom:14px; max-width:720px;}
  .legal-body ul, .legal-body ol{margin:0 0 14px 22px; max-width:700px;}
  .legal-body li{font-size:14.5px; color:var(--text-1); margin-bottom:8px; line-height:1.65;}
  .legal-body strong{color:var(--navy-1); font-weight:600;}
  .legal-callout{
    background:var(--bg-alt); border-left:3px solid var(--orange); border-radius:4px;
    padding:16px 20px; margin:20px 0; max-width:700px;
  }
  .legal-callout p{margin-bottom:0; font-size:13.5px;}
  .legal-table{width:100%; border-collapse:collapse; margin:20px 0 28px; max-width:760px; font-size:13px; border:1px solid var(--line);}
  .legal-table th{
    font-family:var(--mono); text-align:left; font-size:11px; letter-spacing:0.04em; color:var(--text-2);
    padding:12px 16px; border:1px solid var(--line); border-bottom:1.5px solid var(--navy-1); background:var(--bg-alt);
  }
  .legal-table td{padding:12px 16px; border:1px solid var(--line); color:var(--text-1); vertical-align:top; line-height:1.5;}
  .legal-table td.lic{font-family:var(--mono); font-weight:600; color:var(--navy-1); white-space:nowrap;}
  .badge-copyleft{display:inline-block; font-family:var(--mono); font-size:10px; font-weight:700; color:#fff; background:var(--orange); padding:2px 7px; border-radius:3px; margin-left:6px;}

  @media(max-width:860px){
    .legal-layout{grid-template-columns:1fr; gap:24px;}
    .legal-toc{position:static; border-left:none; border-top:1px solid var(--line); padding-top:16px;}
  }