:root{
    --ink:#0B0B0F;
    --ink-soft:#3A3A44;
    --muted:#74747F;
    --line:#E9E9EC;
    --line-strong:#DBDBE0;
    --bg:#FFFFFF;
    --bg-soft:#F7F7F5;
    --bg-tint:#F4F6FF;
    --accent:#2D5BFF;
    --accent-700:#1E45E0;
    --accent-300:#6E8CFF;
    --accent-wash:rgba(45,91,255,0.08);
    --radius:18px;
    --radius-sm:12px;
    --shadow-sm:0 1px 2px rgba(11,11,15,.04), 0 1px 3px rgba(11,11,15,.05);
    --shadow-lg:0 24px 60px -22px rgba(11,11,18,.30), 0 8px 22px -16px rgba(11,11,18,.20);
    --maxw:1180px;
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:'Inter',system-ui,sans-serif;
    color:var(--ink);
    background:var(--bg);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    overflow-x:hidden;
  }
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  ::selection{background:var(--accent);color:#fff}

  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
  .display{font-family:'Space Grotesk',sans-serif;letter-spacing:-.03em;line-height:1.04}
  .mono{font-family:'JetBrains Mono',monospace}

  .eyebrow{
    font-family:'JetBrains Mono',monospace;
    font-size:12px;letter-spacing:.16em;text-transform:uppercase;
    color:var(--accent);font-weight:500;
    display:inline-flex;align-items:center;gap:9px;
  }
  .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-wash)}

  /* ---------- CURSOR GLOW ---------- */
  .glow{
    position:fixed;top:0;left:0;width:520px;height:520px;border-radius:50%;
    background:radial-gradient(circle, rgba(45,91,255,.10), rgba(45,91,255,0) 62%);
    transform:translate(-50%,-50%);pointer-events:none;z-index:1;opacity:0;
    transition:opacity .5s;
  }

  /* ---------- NAV ---------- */
  header.nav{
    position:fixed;top:0;left:0;right:0;z-index:50;
    transition:all .35s var(--ease);
  }
  .nav-inner{
    max-width:var(--maxw);margin:14px auto 0;
    padding:11px 14px 11px 18px;
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    border:1px solid transparent;border-radius:16px;
    transition:all .35s var(--ease);
  }
  header.nav.scrolled .nav-inner{
    margin-top:8px;
    background:rgba(255,255,255,.72);
    backdrop-filter:saturate(180%) blur(18px);
    -webkit-backdrop-filter:saturate(180%) blur(18px);
    border-color:var(--line);
    box-shadow:var(--shadow-sm);
  }
  .brand{display:flex;align-items:center;gap:11px;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:19px;letter-spacing:-.02em}
  .brand svg{display:block}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-links a{
    font-size:14.5px;color:var(--ink-soft);font-weight:500;
    padding:8px 13px;border-radius:9px;transition:.2s;
  }
  .nav-links a:hover{color:var(--ink);background:var(--bg-soft)}
  .nav-cta{display:flex;align-items:center;gap:10px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-weight:600;font-size:14.5px;border-radius:11px;cursor:pointer;
    padding:11px 19px;border:1px solid transparent;transition:.22s var(--ease);
    white-space:nowrap;font-family:'Inter',sans-serif;
  }
  .btn-primary{background:var(--ink);color:#fff}
  .btn-primary:hover{background:#000;transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(0,0,0,.5)}
  .btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px -10px rgba(45,91,255,.7)}
  .btn-accent:hover{background:var(--accent-700);transform:translateY(-1px);box-shadow:0 14px 28px -10px rgba(45,91,255,.8)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-strong)}
  .btn-ghost:hover{border-color:var(--ink);background:var(--bg-soft)}
  .btn-lg{padding:14px 26px;font-size:15.5px}
  .btn .arr{transition:transform .25s var(--ease)}
  .btn:hover .arr{transform:translateX(3px)}

  .nav-toggle{display:none;background:none;border:1px solid var(--line-strong);border-radius:9px;width:42px;height:40px;cursor:pointer}
  .nav-toggle span{display:block;width:18px;height:1.8px;background:var(--ink);margin:4px auto;transition:.25s}

  /* ---------- HERO ---------- */
  .hero{position:relative;padding:148px 0 60px;overflow:hidden}
  .hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
  .hero-bg .mesh{
    position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;
  }
  .mesh.a{width:480px;height:480px;left:-120px;top:-60px;background:radial-gradient(circle,rgba(45,91,255,.16),transparent 70%)}
  .mesh.b{width:420px;height:420px;right:-80px;top:120px;background:radial-gradient(circle,rgba(110,140,255,.14),transparent 70%)}
  .grid-lines{
    position:absolute;inset:0;
    background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
    background-size:48px 48px;
    mask-image:radial-gradient(ellipse 80% 60% at 50% 30%,#000 30%,transparent 75%);
    -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 30%,#000 30%,transparent 75%);
    opacity:.6;
  }
  .hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
  .hero h1{
    font-size:clamp(2.6rem,5.6vw,4.55rem);font-weight:700;margin:22px 0 0;
  }
  .hero h1 .hl{color:var(--accent)}
  .hero p.lead{font-size:clamp(1.05rem,1.5vw,1.22rem);color:var(--ink-soft);max-width:540px;margin:24px 0 0}
  .hero-actions{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}
  .hero-trust{display:flex;gap:26px;margin-top:40px;flex-wrap:wrap}
  .hero-trust .ht{display:flex;flex-direction:column;gap:2px}
  .hero-trust .ht b{font-family:'Space Grotesk',sans-serif;font-size:24px;font-weight:600;letter-spacing:-.02em}
  .hero-trust .ht span{font-size:12.5px;color:var(--muted)}
  .hero-trust .sep{width:1px;background:var(--line)}

  /* ---- hero system viz ---- */
  .viz{position:relative}
  .viz-card{
    background:rgba(255,255,255,.7);border:1px solid var(--line);border-radius:22px;
    box-shadow:var(--shadow-lg);backdrop-filter:blur(8px);
    padding:18px;animation:float 7s ease-in-out infinite;
  }
  @keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
  .viz-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
  .viz-dots{display:flex;gap:6px}
  .viz-dots i{width:9px;height:9px;border-radius:50%;background:var(--line-strong);display:block}
  .viz-tag{font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--muted);background:var(--bg-soft);padding:4px 9px;border-radius:6px}
  .viz-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
  .vstat{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#fff}
  .vstat .lbl{font-size:10.5px;color:var(--muted);font-family:'JetBrains Mono',monospace;letter-spacing:.04em}
  .vstat .num{font-family:'Space Grotesk',sans-serif;font-size:26px;font-weight:600;letter-spacing:-.02em;margin-top:3px}
  .vstat .num small{font-size:14px;color:var(--accent);font-weight:600}
  .chart{border:1px solid var(--line);border-radius:12px;background:#fff;padding:14px}
  .chart-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
  .chart-head .t{font-size:12px;font-weight:600}
  .chart-head .d{font-size:10.5px;color:#1aa260;font-family:'JetBrains Mono',monospace}
  .chart svg{width:100%;height:84px;display:block}
  .chart .ln{stroke:var(--accent);stroke-width:2.4;fill:none;stroke-linecap:round;
    stroke-dasharray:600;stroke-dashoffset:600;animation:draw 2.4s var(--ease) .4s forwards}
  @keyframes draw{to{stroke-dashoffset:0}}
  .viz-pill{
    position:absolute;background:#fff;border:1px solid var(--line);border-radius:11px;
    box-shadow:var(--shadow-lg);padding:9px 13px;display:flex;align-items:center;gap:9px;
    font-size:12.5px;font-weight:500;
  }
  .viz-pill .dot{width:8px;height:8px;border-radius:50%;background:#1aa260;box-shadow:0 0 0 4px rgba(26,162,96,.14)}
  .viz-pill.p1{top:-18px;right:24px;animation:float 6s ease-in-out infinite}
  .viz-pill.p2{bottom:-16px;left:-22px;animation:float 6.5s ease-in-out .6s infinite}
  .viz-pill .dot.b{background:var(--accent);box-shadow:0 0 0 4px var(--accent-wash)}

  /* ---------- MARQUEE LOGOS ---------- */
  .strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg);padding:24px 0;margin-top:34px}
  .strip-lbl{text-align:center;font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
  .marquee{display:flex;overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
  .marquee-track{display:flex;gap:54px;padding-right:54px;animation:scroll 26s linear infinite;flex-shrink:0}
  .marquee:hover .marquee-track{animation-play-state:paused}
  @keyframes scroll{to{transform:translateX(-50%)}}
  .tech-name{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:19px;color:#A9A9B2;white-space:nowrap;transition:.25s;letter-spacing:-.01em}
  .tech-name:hover{color:var(--ink)}

  /* ---------- SECTION SHELL ---------- */
  section{position:relative;z-index:2}
  .sec{padding:96px 0}
  .sec.soft{background:var(--bg-soft)}
  .sec-head{max-width:680px;margin-bottom:52px}
  .sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .sec-head h2{font-family:'Space Grotesk',sans-serif;font-weight:600;letter-spacing:-.03em;font-size:clamp(2rem,3.6vw,2.9rem);margin:16px 0 0;line-height:1.08}
  .sec-head p{color:var(--ink-soft);font-size:1.08rem;margin-top:16px}

  /* reveal */
  .rv{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
  .rv.in{opacity:1;transform:none}
  .rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}.rv.d4{transition-delay:.32s}

  /* ---------- PROBLEM ---------- */
  .prob-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center}
  .prob-list{display:flex;flex-direction:column;gap:2px}
  .prob-item{display:flex;align-items:center;gap:14px;padding:16px 4px;border-bottom:1px solid var(--line);font-size:1.06rem;color:var(--ink-soft)}
  .prob-item:last-child{border-bottom:none}
  .prob-x{width:26px;height:26px;border-radius:8px;background:#FDECEC;color:#D84444;display:grid;place-items:center;flex-shrink:0;font-size:14px}
  .prob-card{background:var(--ink);color:#fff;border-radius:22px;padding:42px 38px;position:relative;overflow:hidden}
  .prob-card::after{content:"";position:absolute;width:280px;height:280px;background:radial-gradient(circle,rgba(45,91,255,.45),transparent 65%);right:-80px;bottom:-90px}
  .prob-card .eyebrow{color:var(--accent-300)}
  .prob-card .eyebrow::before{background:var(--accent-300);box-shadow:0 0 0 4px rgba(110,140,255,.2)}
  .prob-card h3{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.9rem;letter-spacing:-.02em;margin:18px 0 14px;position:relative;z-index:1}
  .prob-card p{color:rgba(255,255,255,.72);position:relative;z-index:1}

  /* ---------- SOLUTIONS ---------- */
  .cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
    transition:.3s var(--ease);position:relative;
  }
  .card:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--shadow-lg)}
  .card .ic{width:46px;height:46px;border-radius:12px;background:var(--bg-tint);display:grid;place-items:center;color:var(--accent);margin-bottom:18px}
  .card h3{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.22rem;letter-spacing:-.02em;margin-bottom:9px}
  .card p{color:var(--muted);font-size:.97rem}

  /* ---------- PROCESS ---------- */
  .proc{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
  .step{padding:30px 24px;border-right:1px solid var(--line);position:relative;transition:.3s}
  .step:last-child{border-right:none}
  .step:hover{background:var(--bg-tint)}
  .step .n{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--accent);font-weight:500;letter-spacing:.04em}
  .step h3{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.12rem;margin:22px 0 8px;letter-spacing:-.01em}
  .step p{font-size:.9rem;color:var(--muted)}
  .step .ar{position:absolute;right:-9px;top:50%;transform:translateY(-50%);z-index:3;width:18px;height:18px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--muted);font-size:10px}

  /* ---------- PROJECTS ---------- */
  .proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .proj{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.32s var(--ease);cursor:pointer}
  .proj:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--line-strong)}
  .proj-thumb{height:178px;position:relative;overflow:hidden;display:grid;place-items:center}
  .proj-thumb.t1{background:linear-gradient(135deg,#0B0B0F,#26304f)}
  .proj-thumb.t2{background:linear-gradient(135deg,#142a5c,#2D5BFF)}
  .proj-thumb.t3{background:linear-gradient(135deg,#0c2b22,#15a06b)}
  .proj-thumb .mock{width:78%;background:rgba(255,255,255,.95);border-radius:10px 10px 0 0;padding:11px;box-shadow:0 16px 40px -16px rgba(0,0,0,.6);position:absolute;bottom:-6px}
  .proj-thumb .mock .bar{height:7px;border-radius:4px;background:#E7E7EC;margin-bottom:7px}
  .proj-thumb .mock .bar.s{width:55%}
  .proj-thumb .mock .row{display:flex;gap:6px;margin-top:9px}
  .proj-thumb .mock .row i{flex:1;height:26px;border-radius:5px;background:var(--bg-tint);display:block}
  .proj-body{padding:22px}
  .proj-body .cat{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
  .proj-body h3{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.25rem;letter-spacing:-.02em;margin:8px 0 9px}
  .proj-body p{font-size:.94rem;color:var(--muted);min-height:46px}
  .proj-meta{display:flex;justify-content:space-between;gap:8px;margin:16px 0;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .proj-meta div span{display:block;font-size:10.5px;font-family:'JetBrains Mono',monospace;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
  .proj-meta div b{font-family:'Space Grotesk',sans-serif;font-size:1.05rem;font-weight:600;color:var(--ink)}
  .proj-meta div b.up{color:#1aa260}
  .tags{display:flex;flex-wrap:wrap;gap:6px}
  .tag{font-size:11.5px;font-family:'JetBrains Mono',monospace;color:var(--ink-soft);background:var(--bg-soft);border:1px solid var(--line);padding:4px 9px;border-radius:7px}
  .proj-link{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:13.5px;color:var(--accent);margin-top:18px}

  /* ---------- TECH ---------- */
  .tech-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
  .tcell{border:1px solid var(--line);border-radius:14px;padding:22px 14px;text-align:center;background:#fff;transition:.28s var(--ease)}
  .tcell:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow-lg)}
  .tcell .tn{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1rem}
  .tcell .tt{font-size:11px;color:var(--muted);font-family:'JetBrains Mono',monospace;margin-top:3px}

  /* ---------- DIFFERENTIALS ---------- */
  .diff-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:54px;align-items:center}
  .diff-list{display:grid;grid-template-columns:1fr 1fr;gap:4px 28px}
  .diff{display:flex;align-items:flex-start;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
  .diff .ck{width:24px;height:24px;border-radius:7px;background:var(--accent-wash);color:var(--accent);display:grid;place-items:center;flex-shrink:0;margin-top:1px}
  .diff b{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1rem;display:block}
  .diff span{font-size:.86rem;color:var(--muted)}

  /* ---------- ABOUT ---------- */
  .about{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
  .about-quote{font-family:'Space Grotesk',sans-serif;font-weight:500;font-size:clamp(1.5rem,2.6vw,2.1rem);letter-spacing:-.02em;line-height:1.22}
  .about-quote em{color:var(--accent);font-style:normal}
  .about p{color:var(--ink-soft);margin-top:20px}
  .about-sign{display:flex;align-items:center;gap:14px;margin-top:28px}
  .about-sign .av{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-700));display:grid;place-items:center;color:#fff;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:20px}
  .about-sign .who b{font-family:'Space Grotesk',sans-serif;display:block;font-size:1rem}
  .about-sign .who span{font-size:.85rem;color:var(--muted)}

  /* ---------- FAQ ---------- */
  .faq{max-width:780px;margin:0 auto}
  .qa{border-bottom:1px solid var(--line)}
  .qa button{width:100%;background:none;border:none;text-align:left;cursor:pointer;padding:24px 4px;display:flex;justify-content:space-between;align-items:center;gap:20px;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.12rem;color:var(--ink);letter-spacing:-.01em}
  .qa .pm{flex-shrink:0;width:26px;height:26px;border:1px solid var(--line-strong);border-radius:8px;display:grid;place-items:center;transition:.3s;color:var(--ink-soft)}
  .qa.open .pm{background:var(--accent);border-color:var(--accent);color:#fff;transform:rotate(180deg)}
  .qa .ans{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
  .qa .ans p{color:var(--ink-soft);padding:0 4px 26px;font-size:1rem}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--ink);border-radius:28px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
  .cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:40px 40px;mask-image:radial-gradient(ellipse 60% 90% at 50% 0%,#000,transparent)}
  .cta-band .glowdot{position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(45,91,255,.5),transparent 65%);left:50%;top:-180px;transform:translateX(-50%)}
  .cta-band h2{position:relative;font-family:'Space Grotesk',sans-serif;font-weight:600;color:#fff;font-size:clamp(2rem,4vw,3rem);letter-spacing:-.03em;line-height:1.1}
  .cta-band p{position:relative;color:rgba(255,255,255,.66);max-width:520px;margin:18px auto 0;font-size:1.1rem}
  .cta-band .hero-actions{justify-content:center;position:relative}

  /* ---------- CONTACT FORM ---------- */
  .contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px}
  .contact-aside h2{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:clamp(1.9rem,3.4vw,2.6rem);letter-spacing:-.03em;line-height:1.08;margin:16px 0 18px}
  .contact-aside p{color:var(--ink-soft)}
  .contact-points{margin-top:30px;display:flex;flex-direction:column;gap:16px}
  .cpoint{display:flex;gap:13px;align-items:center}
  .cpoint .ic{width:40px;height:40px;border-radius:11px;background:var(--bg-tint);color:var(--accent);display:grid;place-items:center;flex-shrink:0}
  .cpoint b{font-family:'Space Grotesk',sans-serif;font-size:.98rem;display:block}
  .cpoint span{font-size:.85rem;color:var(--muted)}
  .form{background:#fff;border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:var(--shadow-sm)}
  .frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .field{margin-bottom:14px}
  .field label{display:block;font-size:12.5px;font-weight:600;margin-bottom:6px;color:var(--ink-soft);font-family:'JetBrains Mono',monospace;letter-spacing:.02em}
  .field input,.field select,.field textarea{
    width:100%;border:1px solid var(--line-strong);border-radius:11px;padding:12px 14px;
    font-family:'Inter',sans-serif;font-size:14.5px;color:var(--ink);background:#fff;transition:.2s;
  }
  .field textarea{resize:vertical;min-height:90px}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-wash)}
  .form .btn-accent{width:100%;margin-top:6px}
  .form-note{font-size:11.5px;color:var(--muted);text-align:center;margin-top:14px}
  .form-ok{display:none;text-align:center;padding:30px 10px}
  .form-ok.show{display:block}
  .form-ok .big{width:62px;height:62px;border-radius:50%;background:var(--accent-wash);color:var(--accent);display:grid;place-items:center;margin:0 auto 18px}
  .form-ok h3{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.4rem;margin-bottom:8px}
  .form-ok p{color:var(--muted)}

  /* ---------- FOOTER ---------- */
  footer{background:var(--ink);color:#fff;padding:72px 0 32px;margin-top:0}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
  .foot-brand .brand{color:#fff}
  .foot-brand p{color:rgba(255,255,255,.55);font-size:.95rem;max-width:280px;margin-top:18px}
  .foot-social{display:flex;gap:10px;margin-top:22px}
  .foot-social a{width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.14);display:grid;place-items:center;color:rgba(255,255,255,.7);transition:.22s}
  .foot-social a:hover{background:#fff;color:var(--ink);border-color:#fff}
  .fcol h4{font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.45);margin-bottom:16px}
  .fcol a{display:block;color:rgba(255,255,255,.7);font-size:.95rem;padding:6px 0;transition:.2s}
  .fcol a:hover{color:#fff}
  .foot-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:54px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);flex-wrap:wrap;gap:14px}
  .foot-bottom p{color:rgba(255,255,255,.45);font-size:.85rem}
  .foot-bottom .mono{color:rgba(255,255,255,.45);font-size:.8rem}

  /* ---------- RESPONSIVE ---------- */
  @media(max-width:980px){
    .nav-links{display:none}
    .nav-toggle{display:block}
    .nav-cta .btn-accent{display:none}
    header.nav.open .nav-links{display:flex;flex-direction:column;position:absolute;top:72px;left:14px;right:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:var(--shadow-lg);gap:2px}
    header.nav.open .nav-links a{padding:13px}
    .hero-grid{grid-template-columns:1fr;gap:48px}
    .viz{max-width:440px;margin:0 auto}
    .prob-grid,.diff-wrap,.about,.contact{grid-template-columns:1fr;gap:40px}
    .diff-list{grid-template-columns:1fr}
    .cards-3,.proj-grid{grid-template-columns:1fr 1fr}
    .proc{grid-template-columns:1fr 1fr}
    .step{border-bottom:1px solid var(--line)}
    .step .ar{display:none}
    .tech-grid{grid-template-columns:repeat(3,1fr)}
  }
  @media(max-width:640px){
    .wrap{padding:0 18px}
    .sec{padding:70px 0}
    .hero{padding:128px 0 40px}
    .cards-3,.proj-grid,.tech-grid,.proc{grid-template-columns:1fr}
    .frow{grid-template-columns:1fr}
    .hero-trust .sep{display:none}
    .cta-band,.prob-card,.form{padding:32px 22px}
    .foot-grid{grid-template-columns:1fr 1fr}
  }

  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .rv{opacity:1;transform:none}
    .glow{display:none}
  }