:root{
    --bg: #0a0e14;
    --bg-panel: #10161f;
    --bg-elevated: #161d28;
    --line: rgba(231,237,243,0.10);
    --line-strong: rgba(231,237,243,0.18);
    --text: #e7edf3;
    --text-muted: #8b96a6;
    --text-dim: #5c6779;
    --signal: #21e6c1;
    --signal-dim: rgba(33,230,193,0.14);
    --alert: #ffb238;
    --alert-dim: rgba(255,178,56,0.14);
    --danger: #ff5d5d;
    --danger-dim: rgba(255,93,93,0.14);
    --radius: 10px;
    --display: 'Space Grotesk', sans-serif;
    --body: 'Inter', sans-serif;
    --mono: 'JetBrains Mono', monospace;
  }

  *{ box-sizing: border-box; }
  html{ scroll-behavior: smooth; }
  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior: auto; }
    *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  }

  body{
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  a{ color: inherit; }
  img,svg{ display:block; max-width:100%; }

  .wrap{ max-width: 1180px; margin: 0 auto; padding: 0 32px; }
  @media (max-width: 640px){ .wrap{ padding: 0 20px; } }

  .eyebrow{
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--signal);
  }

  h1,h2,h3{ font-family: var(--display); font-weight: 600; margin: 0; letter-spacing: -0.01em; }

  /* ---------- NAV ---------- */
  header{
    position: sticky; top: 0; z-index: 50;
    background: rgba(10,14,20,0.82);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  nav{
    display:flex; align-items:center; justify-content: space-between;
    padding: 18px 32px; max-width: 1180px; margin: 0 auto;
  }
  .logo{
    font-family: var(--display); font-weight: 700; font-size: 19px;
    display:flex; align-items:center; gap:10px; text-decoration:none; color: var(--text);
  }
  .logo .logo-mark{ width:24px; height:24px; flex-shrink:0; }
  .navlinks{ display:flex; gap:32px; align-items:center; font-size:14px; }
  .navlinks a{ text-decoration:none; color: var(--text-muted); transition: color .15s; }
  .navlinks a:hover, .navlinks a:focus-visible{ color: var(--text); }
  .navcta{
    border: 1px solid var(--line-strong); padding: 9px 18px; border-radius: 6px;
    font-size: 13px; font-weight: 500; white-space:nowrap;
  }
  .navcta:hover{ border-color: var(--signal); color: var(--signal); }
  .navlinks-mobile-toggle{ display:none; }
  @media (max-width: 860px){
    .navlinks a:not(.navcta){ display:none; }
    nav{ padding: 16px 20px; }
  }

  /* ---------- HERO ---------- */
  .hero{
    position: relative;
    padding: 88px 0 70px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
  }
  .hero-grid{
    display:grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center;
  }
  @media (max-width: 900px){ .hero-grid{ grid-template-columns: 1fr; } }

  .hero h1{
    font-size: clamp(34px, 5vw, 54px);
    line-height: 1.06;
    margin: 18px 0 20px;
  }
  .hero h1 .accent{ color: var(--signal); }
  .hero p.lede{
    color: var(--text-muted); font-size: 17px; max-width: 480px; margin: 0 0 30px;
  }
  .hero-ctas{ display:flex; gap:14px; flex-wrap: wrap; }
  .btn-primary{
    background: var(--signal); color: #04211d; font-weight: 600; font-size: 14.5px;
    padding: 13px 22px; border-radius: 6px; text-decoration:none; display:inline-block;
    border: 1px solid var(--signal); transition: transform .15s, box-shadow .15s;
  }
  .btn-primary:hover{ box-shadow: 0 0 0 4px var(--signal-dim); }
  .btn-secondary{
    color: var(--text); font-weight: 500; font-size: 14.5px;
    padding: 13px 20px; border-radius: 6px; text-decoration:none; display:inline-block;
    border: 1px solid var(--line-strong);
  }
  .btn-secondary:hover{ border-color: var(--text-muted); }

  /* Radar signature element */
  .radar-wrap{ position:relative; display:flex; align-items:center; justify-content:center; }
  .radar{ width: 100%; max-width: 440px; aspect-ratio: 1/1; }
  .radar-ring{ fill:none; stroke: var(--line-strong); stroke-width: 1; }
  .radar-ring.core{ stroke: rgba(33,230,193,0.28); }
  .radar-crosshair{ stroke: var(--line); stroke-width: 1; }
  .sweep{
    transform-origin: 220px 220px;
    animation: sweep-rotate 5.5s linear infinite;
  }
  @keyframes sweep-rotate{ from{ transform: rotate(0deg);} to{ transform: rotate(360deg);} }
  .blip{ transition: r .2s; cursor: pointer; }
  .blip-halo{ animation: blip-pulse 2.6s ease-in-out infinite; transform-origin: center; }
  .blip-halo.d2{ animation-delay: .4s; }
  .blip-halo.d3{ animation-delay: .8s; }
  .blip-halo.d4{ animation-delay: 1.2s; }
  .blip-halo.d5{ animation-delay: 1.6s; }
  .blip-halo.d6{ animation-delay: 2.0s; }
  @keyframes blip-pulse{
    0%{ opacity:.55; transform: scale(1); }
    70%{ opacity:0; transform: scale(2.6); }
    100%{ opacity:0; transform: scale(2.6); }
  }
  .blip-label{ font-family: var(--mono); font-size: 9.5px; fill: var(--text-dim); letter-spacing: .04em; }
  .radar-center-label{ font-family: var(--mono); font-size: 10px; fill: var(--text-muted); text-anchor: middle; letter-spacing: .08em; }

  /* ---------- RINGS SECTION ---------- */
  .section{ padding: 88px 0; border-bottom: 1px solid var(--line); }
  .section-head{ max-width: 620px; margin-bottom: 52px; }
  .section-head h2{ font-size: clamp(26px, 3.4vw, 36px); margin-top: 14px; }
  .section-head p{ color: var(--text-muted); font-size: 15.5px; margin-top: 14px; }

  .rings-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
  @media (max-width: 900px){ .rings-grid{ grid-template-columns: 1fr; } }
  .ring-card{
    background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 26px 24px;
  }
  .ring-card .ring-index{ font-family: var(--mono); font-size: 12px; color: var(--text-dim); }
  .ring-card h3{ font-size: 19px; margin: 10px 0 8px; }
  .ring-card p{ color: var(--text-muted); font-size: 14px; margin: 0 0 16px; }
  .ring-card .services-in-ring{ display:flex; flex-direction: column; gap: 8px; }
  .ring-chip{
    font-size: 13px; color: var(--text); border: 1px solid var(--line); border-radius: 6px;
    padding: 9px 12px; display:flex; justify-content: space-between; align-items:center;
    text-decoration:none;
  }
  .ring-chip:hover{ border-color: var(--signal); }
  .ring-chip span.arrow{ color: var(--text-dim); }
  .ring-card.prevent{ border-top: 2px solid var(--signal); }
  .ring-card.detect{ border-top: 2px solid var(--alert); }
  .ring-card.validate{ border-top: 2px solid var(--danger); }

  /* ---------- SERVICES ---------- */
  .service-block{
    display:grid; grid-template-columns: 320px 1fr; gap: 48px; padding: 56px 0;
    border-bottom: 1px solid var(--line);
  }
  .service-block:last-child{ border-bottom: none; }
  @media (max-width: 860px){ .service-block{ grid-template-columns: 1fr; gap: 20px; } }
  .service-meta .num{ font-family: var(--mono); font-size: 13px; color: var(--text-dim); }
  .service-meta h3{ font-size: 27px; margin: 12px 0 10px; }
  .service-meta .tag{
    display:inline-block; font-family: var(--mono); font-size: 11px; letter-spacing:.06em;
    padding: 4px 9px; border-radius: 4px; text-transform: uppercase; margin-bottom: 4px;
  }
  .tag.prevent{ color: var(--signal); background: var(--signal-dim); }
  .tag.detect{ color: var(--alert); background: var(--alert-dim); }
  .tag.validate{ color: var(--danger); background: var(--danger-dim); }
  .service-meta p.desc{ color: var(--text-muted); font-size: 14.5px; }

  .capability-grid{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 12px; align-content:start; }
  @media (max-width: 560px){ .capability-grid{ grid-template-columns: 1fr; } }
  .cap-item{
    background: var(--bg-panel); border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px;
  }
  .cap-item .cap-acronym{ font-family: var(--mono); font-size: 13px; color: var(--text); font-weight:600; }
  .cap-item .cap-full{ font-size: 12.5px; color: var(--text-dim); margin-top: 2px;}
  .cap-item p{ font-size: 13.5px; color: var(--text-muted); margin: 8px 0 0; }

  /* ---------- WHY / STATS ---------- */
  .stats-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
  @media (max-width: 780px){ .stats-grid{ grid-template-columns: repeat(2,1fr); } }
  .stat{ border-left: 2px solid var(--signal); padding-left: 16px; }
  .stat .num{ font-family: var(--display); font-size: 32px; font-weight: 700; }
  .stat .label{ font-size: 13px; color: var(--text-muted); margin-top: 4px; }

  .approach-list{ margin-top: 36px; display:flex; flex-direction:column; gap:0; }
  .approach-row{
    display:grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 20px 0;
    border-top: 1px solid var(--line);
  }
  .approach-row:last-child{ border-bottom: 1px solid var(--line); }
  .approach-row .step{ font-family: var(--mono); color: var(--text-dim); font-size: 13px; }
  .approach-row h4{ font-family: var(--display); font-size: 16px; margin: 0 0 6px; font-weight: 600; }
  .approach-row p{ font-size: 14px; color: var(--text-muted); margin:0; max-width: 620px; }

  /* ---------- CTA / CONTACT ---------- */
  .cta-section{ padding: 90px 0; text-align:center; }
  .cta-section h2{ font-size: clamp(28px,4vw,42px); }
  .cta-section p{ color: var(--text-muted); max-width: 480px; margin: 16px auto 30px; font-size: 15.5px; }
  .cta-row{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

  footer{ padding: 40px 0 50px; }
  .foot-grid{ display:flex; justify-content:space-between; flex-wrap:wrap; gap: 24px; }
  .foot-grid .logo{ margin-bottom: 8px; }
  footer .fine{ color: var(--text-dim); font-size: 13px; }
  .foot-links{ display:flex; gap: 22px; font-size: 13px; color: var(--text-muted); }
  .foot-links a{ text-decoration:none; }
  .foot-links a:hover{ color: var(--text); }

  .reveal{ opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
  .reveal.in{ opacity: 1; transform: translateY(0); }

  :focus-visible{ outline: 2px solid var(--signal); outline-offset: 2px; }