:root{
    --charcoal:#111827;
    --charcoal-soft:#161f31;
    --gold:#FBBF24;
    --white:#FFFFFF;
    --warm-gray:#E5E7EB;
    --dark-gray:#374151;
    --muted:#9CA3AF;
    --ring:0 0 0 3px rgba(251,191,36,.45);
    --bg:var(--charcoal);
    --surface:var(--charcoal-soft);
    --text:var(--white);
    --text-muted:#A9B0C0;
    --border:rgba(229,231,235,.12);
    --transition:.35s cubic-bezier(.16,.84,.44,1);
  }
  [data-theme="light"]{
    --bg:#F7F7F5;
    --surface:#FFFFFF;
    --text:#111827;
    --text-muted:#4B5563;
    --border:rgba(17,24,39,.1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  }
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:'Inter',system-ui,sans-serif;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    transition:background var(--transition), color var(--transition);
  }
  h1,h2,h3,h4,.display{
    font-family:'Space Grotesk',sans-serif;
    letter-spacing:-.02em;
    line-height:1.05;
    margin:0;
  }
  .mono{font-family:'JetBrains Mono',monospace;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  :focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px;}

  .wrap{max-width:1240px;margin:0 auto;padding:0 24px;}
  section{position:relative;}

  /* ---------- Nav ---------- */
  header.nav{
    position:sticky;top:0;z-index:50;
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    background:color-mix(in srgb, var(--bg) 78%, transparent);
    border-bottom:1px solid var(--border);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:1240px;margin:0 auto;}
  .logo{display:flex;align-items:center;gap:9px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:19px;letter-spacing:-.01em;}
  .logo-mark{width:30px;height:auto;flex-shrink:0;}
  .nav-links{display:flex;align-items:center;gap:34px;}
  .nav-links a{font-size:14.5px;font-weight:500;color:var(--text-muted);transition:color .2s;position:relative;}
  .nav-links a:hover{color:var(--text);}
  .nav-links a::after{content:'';position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .25s;}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-cta-group{display:flex;align-items:center;gap:14px;}

  .theme-toggle{
    width:44px;height:24px;border-radius:99px;border:1px solid var(--border);
    background:var(--surface);cursor:pointer;position:relative;flex-shrink:0;
  }
  .theme-toggle .knob{
    position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;
    background:var(--gold);transition:transform var(--transition);
    display:flex;align-items:center;justify-content:center;font-size:10px;
  }
  [data-theme="light"] .theme-toggle .knob{transform:translateX(20px);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-weight:600;font-size:14.5px;padding:13px 26px;border-radius:10px;
    border:1px solid transparent;cursor:pointer;transition:transform .2s, box-shadow .2s, background .2s, border-color .2s;
    white-space:nowrap;
  }
  .btn:active{transform:scale(.97);}
  .btn-gold{background:var(--gold);color:#161200;}
  .btn-gold:hover{box-shadow:0 8px 24px -8px rgba(251,191,36,.6);transform:translateY(-2px);}
  .btn-ghost{background:transparent;border-color:var(--border);color:var(--text);}
  .btn-ghost:hover{border-color:var(--gold);}
  .btn-sm{padding:10px 18px;font-size:13.5px;}

  .mobile-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:6px;}
  .mobile-menu{
    display:none;flex-direction:column;gap:2px;position:fixed;inset:0 0 auto 0;top:0;
    background:var(--bg);z-index:100;padding:20px 24px;transform:translateY(-100%);transition:transform .35s cubic-bezier(.16,.84,.44,1);
    max-height:100vh;overflow-y:auto;
  }
  .mobile-menu.open{transform:translateY(0);}
  .mobile-menu a{padding:16px 4px;font-size:19px;font-weight:600;border-bottom:1px solid var(--border);}
  .mobile-menu-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;}

  /* ---------- Hero ---------- */
  .hero{
    padding:120px 24px 100px;
    position:relative;
    overflow:hidden;
  }
  .hero-glow{
    position:absolute;top:-200px;right:-160px;width:640px;height:640px;
    background:radial-gradient(circle, rgba(251,191,36,.16), transparent 70%);
    pointer-events:none;filter:blur(10px);
  }
  .hero-inner{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;position:relative;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;
    font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);
    padding:7px 14px;border:1px solid rgba(251,191,36,.35);border-radius:99px;margin-bottom:26px;
    background:rgba(251,191,36,.06);
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);animation:pulse-dot 1.8s ease-in-out infinite;}
  @keyframes pulse-dot{0%,100%{opacity:1;}50%{opacity:.3;}}

  .hero h1{font-size:clamp(40px,6vw,74px);font-weight:700;color:var(--text);}
  .hero h1 .accent{color:var(--gold);}
  .hero p.lede{font-size:18px;line-height:1.65;color:var(--text-muted);max-width:520px;margin:26px 0 36px;}
  .hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}

  /* attention ring — signature element */
  .ring-stage{display:flex;align-items:center;justify-content:center;position:relative;}
  .ring-card{
    background:var(--surface);border:1px solid var(--border);border-radius:24px;
    padding:36px;width:100%;max-width:360px;position:relative;
    box-shadow:0 30px 60px -30px rgba(0,0,0,.5);
  }
  .ring-wrap{position:relative;width:220px;height:220px;margin:0 auto 20px;}
  .ring-wrap svg{width:100%;height:100%;transform:rotate(-90deg);}
  .ring-track{fill:none;stroke:var(--border);stroke-width:6;}
  .ring-progress{
    fill:none;stroke:var(--gold);stroke-width:6;stroke-linecap:round;
    stroke-dasharray:597;stroke-dashoffset:597;
    animation:ring-fill 3s cubic-bezier(.65,0,.35,1) infinite;
  }
  @keyframes ring-fill{
    0%{stroke-dashoffset:597;}
    85%{stroke-dashoffset:0;}
    100%{stroke-dashoffset:0;}
  }
  .ring-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0 34px;text-align:center;}
  .ring-num{font-family:'JetBrains Mono',monospace;font-size:52px;font-weight:600;color:var(--text);}
  .ring-label{font-family:'JetBrains Mono',monospace;font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:6px;line-height:1.5;white-space:normal;max-width:132px;}
  .ring-caption{text-align:center;font-size:14px;color:var(--text-muted);line-height:1.6;}
  .ring-caption strong{color:var(--text);}

  /* ---------- section headers ---------- */
  .section-pad{padding:120px 24px;}
  .section-head{max-width:640px;margin-bottom:64px;}
  .section-eyebrow{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:14px;display:block;}
  .section-head h2{font-size:clamp(30px,4vw,46px);font-weight:700;}
  .section-head p{font-size:16.5px;color:var(--text-muted);margin-top:18px;line-height:1.7;}
  .divider-arc{width:100%;max-width:120px;height:1px;background:linear-gradient(90deg,var(--gold),transparent);margin-bottom:18px;}

  /* ---------- reveal on scroll ---------- */
  .reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.16,.84,.44,1), transform .7s cubic-bezier(.16,.84,.44,1);}
  .reveal.in{opacity:1;transform:translateY(0);}

  /* ---------- Stats ---------- */
  .stats-strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
  .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
  .stat-cell{padding:52px 30px;text-align:center;border-right:1px solid var(--border);}
  .stat-cell:last-child{border-right:none;}
  .stat-num{font-family:'JetBrains Mono',monospace;font-size:clamp(30px,3.4vw,44px);font-weight:600;color:var(--gold);}
  .stat-label{font-size:13px;color:var(--text-muted);margin-top:8px;letter-spacing:.01em;}

  /* ---------- Services ---------- */
  .services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:20px;overflow:hidden;}
  .service-card{
    background:var(--surface);padding:38px 32px;transition:background var(--transition), transform .3s;
    position:relative;
  }
  .service-card:hover{background:var(--charcoal);transform:translateY(-2px);}
  [data-theme="light"] .service-card:hover{background:#FAFAF9;}
  .service-icon{width:42px;height:42px;border-radius:11px;background:rgba(251,191,36,.1);display:flex;align-items:center;justify-content:center;margin-bottom:22px;color:var(--gold);}
  .service-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
  .service-card p{font-size:14.5px;color:var(--text-muted);line-height:1.6;margin:0;}

  /* ---------- Process ---------- */
  .process-line{position:relative;padding-left:0;}
  .process-item{
    display:grid;grid-template-columns:90px 1fr;gap:28px;padding:34px 0;border-top:1px solid var(--border);
    align-items:start;
  }
  .process-item:last-child{border-bottom:1px solid var(--border);}
  .process-num{font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--gold);padding-top:4px;}
  .process-body h3{font-size:21px;font-weight:600;margin-bottom:8px;}
  .process-body p{font-size:15px;color:var(--text-muted);line-height:1.7;max-width:640px;margin:0;}

  /* ---------- Why Lumen ---------- */
  .why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .why-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;transition:border-color .3s, transform .3s;}
  .why-card:hover{border-color:rgba(251,191,36,.4);transform:translateY(-3px);}
  .why-card h3{font-size:16.5px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
  .why-card h3 svg{color:var(--gold);flex-shrink:0;}
  .why-card p{font-size:14px;color:var(--text-muted);line-height:1.6;margin:0;}

  /* ---------- Founder ---------- */
  .founder-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:center;}
  .founder-visual{
    aspect-ratio:4/5;border-radius:24px;
    background:
      radial-gradient(circle at 30% 20%, rgba(251,191,36,.22), transparent 55%),
      linear-gradient(160deg, #1a2338, #0c1220);
    border:1px solid var(--border);position:relative;overflow:hidden;
    display:flex;align-items:center;justify-content:center;
  }
  .founder-visual svg{width:46%;opacity:.9;}
  .founder-mark{position:absolute;bottom:24px;left:24px;font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);}
  .founder-copy h2{font-size:clamp(28px,3.4vw,38px);margin-bottom:22px;}
  .founder-copy p{font-size:16px;line-height:1.75;color:var(--text-muted);margin:0 0 18px;}
  .founder-signoff{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--gold);margin-top:22px;}

  /* ---------- Testimonials ---------- */
  .testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .testi-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:30px;position:relative;}
  .testi-badge{
    position:absolute;top:18px;right:18px;font-family:'JetBrains Mono',monospace;font-size:9.5px;letter-spacing:.08em;
    text-transform:uppercase;color:var(--muted);border:1px solid var(--border);padding:3px 8px;border-radius:99px;
  }
  .testi-quote{font-size:15px;line-height:1.7;color:var(--text);margin:6px 0 22px;font-style:italic;}
  .testi-person{display:flex;align-items:center;gap:12px;}
  .testi-avatar{width:34px;height:34px;border-radius:10px;background:rgba(251,191,36,.1);border:1px solid rgba(251,191,36,.3);flex-shrink:0;position:relative;}
  .testi-avatar::after{content:'';position:absolute;top:50%;left:50%;width:8px;height:8px;border-radius:50%;background:var(--gold);transform:translate(-50%,-50%);}
  .testi-name{font-size:13.5px;font-weight:600;}
  .testi-role{font-size:12px;color:var(--text-muted);}

  /* ---------- Case studies ---------- */
  .case-panel{
    border:1px dashed var(--border);border-radius:20px;padding:64px 40px;text-align:center;
    background:repeating-linear-gradient(135deg, transparent, transparent 22px, rgba(251,191,36,.025) 22px, rgba(251,191,36,.025) 44px);
  }
  .case-panel h3{font-size:24px;margin-bottom:12px;}
  .case-panel p{color:var(--text-muted);max-width:480px;margin:0 auto;font-size:15px;line-height:1.7;}

  /* ---------- FAQ ---------- */
  .faq-item{border-top:1px solid var(--border);}
  .faq-item:last-child{border-bottom:1px solid var(--border);}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;width:100%;background:none;border:none;
    color:var(--text);cursor:pointer;padding:26px 4px;text-align:left;font-size:17px;font-weight:600;font-family:'Space Grotesk',sans-serif;
  }
  .faq-q .plus{font-family:'JetBrains Mono',monospace;font-size:18px;color:var(--gold);transition:transform .3s;flex-shrink:0;margin-left:20px;}
  .faq-item.open .plus{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.16,.84,.44,1);}
  .faq-a-inner{padding:0 4px 26px;font-size:15px;color:var(--text-muted);line-height:1.7;max-width:680px;}

  /* ---------- Contact ---------- */
  .contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;}
  .contact-info h2{font-size:clamp(28px,3.4vw,38px);margin-bottom:18px;}
  .contact-info p{color:var(--text-muted);font-size:15.5px;line-height:1.7;margin-bottom:34px;}
  .contact-line{display:flex;align-items:center;gap:14px;margin-bottom:18px;font-size:15px;}
  .contact-line .ic{width:38px;height:38px;border-radius:10px;background:rgba(251,191,36,.1);color:var(--gold);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
  .contact-line a{font-weight:600;}
  .contact-line a:hover{color:var(--gold);}

  form.card-form{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:36px;}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:12.5px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:var(--text-muted);margin-bottom:8px;}
  .field input, .field textarea, .field select{
    width:100%;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:13px 14px;
    color:var(--text);font-size:14.5px;font-family:inherit;transition:border-color .2s, box-shadow .2s;
  }
  .field input:focus, .field textarea:focus, .field select:focus{border-color:var(--gold);box-shadow:var(--ring);outline:none;}
  .field textarea{resize:vertical;min-height:100px;}
  .field .err{display:none;color:#F87171;font-size:12px;margin-top:6px;}
  .field.invalid input, .field.invalid textarea{border-color:#F87171;}
  .field.invalid .err{display:block;}
  .form-submit{width:100%;margin-top:6px;}
  .form-success{display:none;text-align:center;padding:40px 10px;}
  .form-success.show{display:block;animation:pop-in .5s cubic-bezier(.16,.84,.44,1);}
  @keyframes pop-in{from{opacity:0;transform:scale(.92);}to{opacity:1;transform:scale(1);}}
  .check-circle{
    width:64px;height:64px;border-radius:50%;background:rgba(251,191,36,.12);border:1px solid rgba(251,191,36,.4);
    display:flex;align-items:center;justify-content:center;margin:0 auto 18px;color:var(--gold);
  }

  /* ---------- Newsletter ---------- */
  .newsletter-panel{
    border-radius:24px;padding:64px 40px;text-align:center;position:relative;overflow:hidden;
    background:linear-gradient(135deg, var(--charcoal-soft), #0c1220);
    border:1px solid var(--border);
  }
  .newsletter-panel::before{
    content:'';position:absolute;top:-120px;left:50%;transform:translateX(-50%);width:480px;height:280px;
    background:radial-gradient(ellipse, rgba(251,191,36,.14), transparent 70%);
  }
  .newsletter-panel h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:12px;position:relative;}
  .newsletter-panel p{color:var(--text-muted);max-width:440px;margin:0 auto 30px;font-size:15px;position:relative;}
  .newsletter-form{display:flex;gap:10px;max-width:440px;margin:0 auto;position:relative;flex-wrap:wrap;}
  .newsletter-form input{flex:1;min-width:200px;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:14px 16px;color:var(--text);font-size:14.5px;}
  .newsletter-form input:focus{border-color:var(--gold);outline:none;box-shadow:var(--ring);}
  .newsletter-success{display:none;color:var(--gold);font-size:14px;margin-top:16px;font-weight:600;position:relative;}
  .newsletter-success.show{display:block;}

  /* ---------- Footer ---------- */
  footer{border-top:1px solid var(--border);padding:64px 24px 32px;}
  .footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px;margin-bottom:56px;}
  .footer-brand p{color:var(--text-muted);font-size:14px;line-height:1.7;margin:16px 0 0;max-width:280px;}
  .footer-col h4{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:18px;}
  .footer-col a{display:block;font-size:14.5px;color:var(--text-muted);margin-bottom:12px;transition:color .2s;}
  .footer-col a:hover{color:var(--gold);}
  .footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:28px;border-top:1px solid var(--border);flex-wrap:wrap;gap:14px;}
  .footer-bottom p{font-size:13px;color:var(--muted);margin:0;}

  /* ---------- misc utils ---------- */
  .split-2{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}

  @media (max-width: 980px){
    .hero-inner, .founder-grid, .contact-grid, .split-2{grid-template-columns:1fr;}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .stat-cell:nth-child(2){border-right:none;}
    .services-grid{grid-template-columns:repeat(2,1fr);}
    .why-grid, .testi-grid{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:repeat(2,1fr);}
    .nav-links{display:none;}
    .mobile-toggle{display:block;}
  }
  @media (max-width: 640px){
    .section-pad{padding:80px 20px;}
    .hero{padding:100px 20px 70px;}
    .stats-grid, .services-grid, .why-grid, .testi-grid{grid-template-columns:1fr;}
    .stat-cell{border-right:none;border-bottom:1px solid var(--border);}
    .form-row{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .process-item{grid-template-columns:1fr;gap:8px;}
  }