:root{
    --void:#050607;
    --panel:#0c0e11;
    --panel-2:#101317;
    --line:#1d2127;
    --cyan:#22C7E5;
    --cyan-deep:#0a4a56;
    --cyan-dim:#0e2e35;
    --ink:#f2f5f7;
    --mute:#8993a1;
    --mute-2:#5b636e;
    --mono: ui-monospace, SFMono-Regular, "IBM Plex Mono", Menlo, Consolas, monospace;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth; background:#050607; min-height:100%;}
  body{
    background:#050607;
    color:var(--ink);
    font-family:'Satoshi',-apple-system,sans-serif;
    font-size:16px;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    min-height:100vh;
    min-height:100dvh;
  }
  h1,h2,h3,.display{
    font-family:'Clash Display',sans-serif;
    font-weight:600;
    letter-spacing:-0.02em;
    line-height:1.05;
  }
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  .wrap{max-width:1180px;margin:0 auto;padding:0 32px;}
  ::selection{background:var(--cyan);color:#031014;}

  /* focus visibility */
  a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px;}

  /* ---------- NAV ---------- */
  nav{
    position:fixed; top:0; left:0; right:0; z-index:100;
    backdrop-filter:blur(14px);
    background:rgba(5,6,7,0.72);
    border-bottom:1px solid rgba(255,255,255,0.06);
  }
  nav .wrap{display:flex; align-items:center; justify-content:space-between; height:74px;}
  nav .brand img{height:22px; width:auto;}
  nav ul{display:flex; list-style:none;}
  nav ul li{margin-left:36px;}
  nav ul a{font-size:14px; color:var(--mute); transition:color .2s;}
  nav ul a:hover{color:var(--ink);}
  .burger{
    display:none; flex-direction:column; justify-content:center; gap:5px;
    width:34px; height:34px; background:none; border:none; cursor:pointer; padding:0;
  }
  .burger span{display:block; width:22px; height:2px; background:var(--ink); transition:transform .25s ease, opacity .25s ease;}
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .burger.open span:nth-child(2){opacity:0;}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .mobile-menu{
    display:none; position:fixed; top:74px; left:0; right:0; z-index:99;
    background:rgba(6,7,9,0.98); border-bottom:1px solid var(--line);
    padding:8px 0 18px; flex-direction:column;
    transform:translateY(-8px); opacity:0; pointer-events:none; transition:opacity .2s ease, transform .2s ease;
  }
  .mobile-menu.open{display:flex; opacity:1; transform:translateY(0); pointer-events:auto;}
  .mobile-menu a{padding:14px 32px; font-size:15.5px; color:var(--ink); border-top:1px solid var(--line);}
  .mobile-menu a:first-child{border-top:none;}
  nav .cta{
    font-size:13.5px; font-weight:600; color:var(--void);
    background:var(--cyan); padding:10px 20px; border-radius:100px;
    transition:transform .18s ease, box-shadow .18s ease;
  }
  nav .cta:hover{transform:translateY(-1px); box-shadow:0 8px 24px rgba(34,199,229,0.28);}
  .nav-links{display:flex; align-items:center; gap:36px;}

  /* ---------- HERO ---------- */
  header.hero{
    position:relative;
    padding:190px 0 120px;
    overflow:hidden;
    background:#050607;
  }
  header.hero::before{
    content:"";
    position:absolute; top:-260px; left:50%; transform:translateX(-50%);
    width:1100px; height:640px;
    background:radial-gradient(ellipse at center, rgba(34,199,229,0.16), transparent 68%);
    pointer-events:none;
  }
  .hero-grid{
    position:relative; z-index:1;
    display:grid; grid-template-columns:1.05fr 0.95fr; gap:64px; align-items:center;
  }
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    font-family:var(--mono); font-size:11.5px; letter-spacing:0.14em; text-transform:uppercase;
    color:var(--cyan); margin-bottom:26px;
  }
  .eyebrow::before{content:""; width:6px; height:6px; border-radius:50%; background:var(--cyan); box-shadow:0 0 12px var(--cyan);}
  .hero h1{
    font-size:clamp(40px, 4.6vw, 64px);
    max-width:640px;
  }
  .hero h1 .fade{color:var(--mute-2);}
  .hero h1 .accent{color:var(--cyan);}
  .hero p.sub{
    margin-top:26px; font-size:18px; color:var(--mute); max-width:480px; font-weight:400;
  }
  .hero-ctas{display:flex; gap:14px; margin-top:40px; flex-wrap:wrap;}
  .btn-primary{
    background:var(--cyan); color:#031014; font-weight:700; font-size:15px;
    padding:15px 26px; border-radius:100px; display:inline-flex; align-items:center; gap:8px;
    transition:transform .18s ease, box-shadow .18s ease;
  }
  .btn-primary:hover{transform:translateY(-2px); box-shadow:0 12px 30px rgba(34,199,229,0.32);}
  .btn-ghost{
    border:1px solid var(--line); color:var(--ink); font-weight:600; font-size:15px;
    padding:15px 26px; border-radius:100px; transition:border-color .18s ease, background .18s ease;
  }
  .btn-ghost:hover{border-color:var(--cyan); background:rgba(34,199,229,0.06);}

  /* ---------- SIGNATURE: whatsapp response widget ---------- */
  .chat-card{
    position:relative;
    background:linear-gradient(180deg,#0d1013,#0a0c0e);
    border:1px solid var(--line);
    border-radius:22px;
    padding:26px 22px 30px;
    min-height:420px;
    box-shadow:0 40px 80px -30px rgba(0,0,0,0.7);
  }
  .chat-card .chat-head{
    display:flex; align-items:center; gap:10px; padding-bottom:16px; margin-bottom:18px;
    border-bottom:1px solid var(--line);
  }
  .chat-head .dot{width:8px;height:8px;border-radius:50%;background:#3a4048;}
  .chat-head .dot.live{background:var(--cyan); box-shadow:0 0 8px var(--cyan); animation:pulse 1.6s infinite;}
  @keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
  .chat-head span{font-family:var(--mono); font-size:11.5px; color:var(--mute-2); letter-spacing:.04em;}
  .bubble{
    max-width:78%; padding:11px 15px; border-radius:16px; font-size:14.5px; margin-bottom:12px;
    opacity:0; transform:translateY(8px);
    animation-fill-mode:forwards; animation-duration:.5s; animation-timing-function:ease-out;
  }
  .bubble.in{background:#1a1e23; color:var(--ink); border-bottom-left-radius:4px;}
  .bubble.out{background:var(--cyan); color:#031014; margin-left:auto; border-bottom-right-radius:4px; font-weight:600;}
  .bubble.ghost{background:transparent; border:1px dashed #33393f; color:var(--mute-2); font-family:var(--mono); font-size:12px; padding:8px 14px;}
  .typing{display:inline-flex; gap:4px; padding:12px 15px; background:#1a1e23; border-radius:16px; border-bottom-left-radius:4px; opacity:0; animation-fill-mode:forwards;}
  .typing span{width:6px;height:6px;border-radius:50%;background:var(--mute); animation:blink 1s infinite;}
  .typing span:nth-child(2){animation-delay:.15s;} .typing span:nth-child(3){animation-delay:.3s;}
  @keyframes blink{0%,100%{opacity:.25;}50%{opacity:1;}}
  .timer-badge{
    display:inline-flex; align-items:center; gap:6px; margin-top:6px;
    font-family:var(--mono); font-size:11px; color:var(--cyan); opacity:0;
    animation-fill-mode:forwards;
  }
  .compare-row{
    display:flex; justify-content:space-between; align-items:center;
    margin-top:22px; padding-top:18px; border-top:1px solid var(--line);
    opacity:0; animation-fill-mode:forwards;
  }
  .compare-row .stat{text-align:center; flex:1;}
  .compare-row .stat b{display:block; font-family:'Clash Display'; font-size:22px;}
  .compare-row .stat.bad b{color:#5b636e; text-decoration:line-through; text-decoration-color:#3a4048;}
  .compare-row .stat.good b{color:var(--cyan);}
  .compare-row .stat span{font-size:10.5px; color:var(--mute-2); text-transform:uppercase; letter-spacing:.06em; font-family:var(--mono);}
  .compare-row .vs{color:var(--mute-2); font-size:12px; padding:0 8px;}

  /* ---------- SECTION SCAFFOLD ---------- */
  section{padding:120px 0; position:relative; background:#050607;}
  .section-alt{background:#0c0e11; border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
  .eyebrow-lg{font-family:var(--mono); font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--cyan); margin-bottom:16px;}
  .section-head{max-width:640px; margin-bottom:64px;}
  .section-head h2{font-size:clamp(30px,3.4vw,42px);}
  .section-head p{margin-top:16px; color:var(--mute); font-size:17px;}

  .reveal{opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease;}
  .reveal.on{opacity:1; transform:translateY(0);}

  /* ---------- THESIS / COMPARISON ---------- */
  .thesis-quote{
    font-family:'Clash Display'; font-weight:500;
    font-size:clamp(26px,3vw,38px); line-height:1.28; max-width:920px; color:var(--ink);
  }
  .thesis-quote .cyan{color:var(--cyan);}
  .compare-grid{display:grid; grid-template-columns:1fr 1fr; gap:1px; margin-top:64px; background:var(--line); border:1px solid var(--line); border-radius:18px; overflow:hidden;}
  .compare-col{background:var(--panel-2); padding:36px 34px;}
  .compare-col.win{background:linear-gradient(180deg, rgba(34,199,229,0.07), transparent 60%), var(--panel-2);}
  .compare-col h3{font-family:var(--mono); font-size:12.5px; letter-spacing:.08em; text-transform:uppercase; font-weight:500; color:var(--mute-2); margin-bottom:22px;}
  .compare-col.win h3{color:var(--cyan);}
  .compare-col ul{list-style:none;}
  .compare-col li{
    padding:14px 0; border-top:1px solid var(--line); font-size:15px; color:var(--mute);
    display:flex; gap:12px; align-items:flex-start;
  }
  .compare-col li:first-child{border-top:none;}
  .compare-col.win li{color:var(--ink);}
  .compare-col li .mark{font-family:var(--mono); font-size:13px; color:var(--mute-2); flex-shrink:0; margin-top:1px;}
  .compare-col.win li .mark{color:var(--cyan);}

  /* ---------- ARCHITECTURE ---------- */
  .arch-flow{display:grid; grid-template-columns:repeat(4,1fr); gap:0; margin-top:20px;}
  .arch-card{
    padding:30px 24px; border:1px solid var(--line); background:var(--panel-2);
    position:relative; min-height:220px; display:flex; flex-direction:column; gap:14px;
  }
  .arch-card:not(:last-child){border-right:none;}
  .arch-card:first-child{border-radius:16px 0 0 16px;}
  .arch-card:last-child{border-radius:0 16px 16px 0;}
  .arch-card .num{font-family:var(--mono); font-size:11px; color:var(--mute-2);}
  .arch-card .ic{width:38px;height:38px;border-radius:10px;background:var(--cyan-dim); display:flex;align-items:center;justify-content:center;}
  .arch-card h4{font-family:'Clash Display'; font-size:18px; font-weight:600;}
  .arch-card p{font-size:13.5px; color:var(--mute); line-height:1.5;}
  .arch-card.core{background:linear-gradient(180deg, rgba(34,199,229,0.09), transparent 70%), var(--panel-2);}
  .arch-card.core .ic{background:var(--cyan);}
  .arrow-connector{position:absolute; top:50%; right:-1px; transform:translateY(-50%); z-index:2; color:var(--mute-2);}

  /* ---------- GRANDCLINIC ---------- */
  .gc-banner{
    display:flex; align-items:center; justify-content:space-between; gap:40px;
    padding:48px; border-radius:22px; margin-bottom:56px;
    background:radial-gradient(ellipse at 20% 20%, rgba(34,199,229,0.14), transparent 60%), #0a0c0e;
    border:1px solid var(--line);
  }
  .gc-banner img{height:46px; width:auto;}
  .gc-banner p{max-width:380px; color:var(--mute); font-size:15px;}
  .module-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px;}
  .module-card{
    background:var(--panel-2); border:1px solid var(--line); border-radius:16px; padding:28px 24px;
    transition:border-color .2s ease, transform .2s ease;
  }
  .module-card:hover{border-color:rgba(34,199,229,0.4); transform:translateY(-3px);}
  .module-card.core{border-color:var(--cyan); background:linear-gradient(180deg, rgba(34,199,229,0.08), transparent 65%), var(--panel-2);}
  .module-card .tag{
    display:inline-block; font-family:var(--mono); font-size:9.5px; letter-spacing:.08em; text-transform:uppercase;
    color:var(--cyan); background:var(--cyan-dim); padding:3px 9px; border-radius:6px; margin-bottom:14px;
  }
  .module-card h4{font-family:'Clash Display'; font-size:17px; margin-bottom:8px;}
  .module-card p{font-size:13.5px; color:var(--mute); line-height:1.5;}

  /* ---------- MANIFESTO ---------- */
  .manifesto{
    background:#000; position:relative; padding:140px 0;
  }
  .manifesto::before{
    content:""; position:absolute; inset:0;
    background:
      radial-gradient(ellipse 700px 400px at 15% 0%, rgba(34,199,229,0.10), transparent 60%),
      radial-gradient(ellipse 700px 400px at 85% 100%, rgba(34,199,229,0.08), transparent 60%);
  }
  .manifesto .wrap{position:relative; z-index:1;}
  .manifesto h2{
    font-size:clamp(32px,4.4vw,56px); max-width:900px; font-weight:500;
  }
  .manifesto h2 .cyan{color:var(--cyan);}
  .pillars{margin-top:72px; display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:16px; overflow:hidden;}
  .pillar{background:#08090a; padding:30px 32px;}
  .pillar .dash{display:block; width:22px; height:2px; background:var(--cyan); margin-bottom:16px;}
  .pillar h5{font-family:'Clash Display'; font-size:16.5px; font-weight:600; margin-bottom:8px;}
  .pillar p{font-size:13.5px; color:var(--mute); line-height:1.55;}

  /* ---------- CTA / FOOTER ---------- */
  footer{padding:100px 0 48px; background:#050607;}
  .cta-block{
    text-align:center; padding:80px 40px; border-radius:24px;
    background:radial-gradient(ellipse at 50% 0%, rgba(34,199,229,0.14), transparent 65%), var(--panel-2);
    border:1px solid var(--line);
  }
  .cta-block h2{font-size:clamp(28px,3.6vw,44px); max-width:680px; margin:0 auto;}
  .cta-block p{color:var(--mute); margin-top:18px; font-size:16px;}
  .cta-block .hero-ctas{justify-content:center; margin-top:34px;}
  .foot-bottom{
    display:flex; justify-content:space-between; align-items:center; margin-top:72px;
    padding-top:32px; border-top:1px solid var(--line); flex-wrap:wrap; gap:16px;
  }
  .foot-bottom img{height:18px;}
  .foot-bottom .fmute{font-size:12.5px; color:var(--mute-2);}

  /* ---------- RESPONSIVE ---------- */
  @media (max-width: 900px){
    .hero-grid{grid-template-columns:1fr;}
    .compare-grid{grid-template-columns:1fr;}
    .arch-flow{grid-template-columns:1fr;}
    .arch-card{border-right:1px solid var(--line) !important; border-radius:0 !important;}
    .arch-card:first-child{border-radius:16px 16px 0 0 !important;}
    .arch-card:last-child{border-radius:0 0 16px 16px !important;}
    .module-grid{grid-template-columns:1fr 1fr;}
    .pillars{grid-template-columns:1fr;}
    .gc-banner{flex-direction:column; text-align:center;}
    .nav-links{display:none;}
    .burger{display:flex;}
  }
  @media (max-width: 560px){
    .module-grid{grid-template-columns:1fr;}
    .wrap{padding:0 20px;}
    header.hero{padding:120px 0 56px;}
    header.hero::before{width:600px; height:400px; top:-160px;}
    section{padding:64px 0;}
    .manifesto{padding:72px 0;}
    .section-head{margin-bottom:40px;}
    .compare-col{padding:26px 22px;}
    .arch-card{padding:24px 20px; min-height:auto;}
    .gc-banner{padding:32px 24px; margin-bottom:36px;}
    .gc-banner img{height:34px;}
    .module-card{padding:22px 20px;}
    .pillar{padding:24px 22px;}
    .cta-block{padding:48px 24px;}
    .foot-bottom{flex-direction:column; align-items:flex-start; gap:14px;}
    .chat-card{padding:20px 16px 24px;}
    .bubble{max-width:88%;}
  }
  @media (prefers-reduced-motion: reduce){
    *{animation-duration:0.001ms !important; transition-duration:0.001ms !important;}
  }