:root{
    --paper:#FAFAFA; --surface:#FFFFFF; --ink:#0F1222; --grey:#6B7080; --grey-light:#9A9EAC;
    --line:#EAEAF0; --indigo:#3D3DFF; --indigo-dark:#2A2ACC; --indigo-tint:#EEEEFF;
    --mint:#0FB88A; --mint-tint:#E7FAF3; --navy:#0B3B60; --navy-dark:#082944;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{font-family:'IBM Plex Sans',Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65;-webkit-font-smoothing:antialiased;}
  h1,h2,h3{font-family:'Space Grotesk',Arial,sans-serif;font-weight:600;letter-spacing:-0.01em;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font-family:inherit;cursor:pointer;}
  input,select,textarea{font-family:inherit;}
  .wrap{max-width:1160px;margin:0 auto;padding:0 32px;}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;font-size:12.5px;font-weight:500;color:var(--indigo);background:var(--indigo-tint);padding:6px 12px;border-radius:20px;}
  .eyebrow .pulse{width:6px;height:6px;border-radius:50%;background:var(--indigo);animation:pulse 1.8s ease-in-out infinite;}
  @keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.4;transform:scale(1.4);}}
  @keyframes spin{to{transform:rotate(360deg);}}
  .spin{animation:spin 1s linear infinite;}

  /* nav */
  nav.topnav{position:sticky;top:0;z-index:50;background:var(--navy);border-bottom:1px solid var(--navy-dark);}
  .nav-row{display:flex;align-items:center;justify-content:space-between;height:80px;}
  .nav-brand{display:flex;align-items:center;gap:12px;background:#fff;padding:10px 18px;border-radius:10px;box-shadow:0 4px 14px rgba(0,0,0,.16);}
  .nav-brand img{height:40px;width:auto;display:block;}
  .nav-links{display:flex;gap:32px;}
  .nav-links a{font-size:14.5px;font-weight:500;color:#C7D8E8;}
  .nav-links a:hover{color:#fff;}
  .btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;font-size:14.5px;font-weight:600;border-radius:10px;border:1px solid transparent;background:none;}
  .btn-primary{background:var(--ink);color:#fff;}
  .btn-primary:hover{background:#000;}
  .btn-indigo{background:var(--indigo);color:#fff;}
  .btn-indigo:hover{background:var(--indigo-dark);}
  .btn-ghost{border-color:var(--line);color:var(--ink);background:#fff;}
  .btn-ghost:hover{border-color:var(--grey-light);}
  .btn-navyghost{border-color:rgba(255,255,255,.35);color:#fff;background:transparent;}
  .btn-navyghost:hover{background:rgba(255,255,255,.08);}
  .nav-row .btn-white{background:#fff;color:var(--navy);}
  .nav-row .btn-white:hover{background:#EAF0F6;}

  /* hero */
  .hero{padding:88px 0 60px;}
  .hero-grid{display:grid;grid-template-columns:1fr .92fr;gap:56px;align-items:center;}
  .hero h1{font-size:44px;line-height:1.14;margin:20px 0 20px;}
  .hero h1 .accent{color:var(--indigo);}
  .hero p.lead{font-size:17px;color:var(--grey);max-width:480px;margin-bottom:32px;}
  .hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px;}
  .hero-meta{display:flex;gap:22px;font-size:13px;color:var(--grey-light);}
  .hero-meta span{display:flex;align-items:center;gap:6px;}

  .chat-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 60px -20px rgba(15,18,34,.14);overflow:hidden;}
  .chat-head{display:flex;align-items:center;gap:10px;padding:16px 20px;border-bottom:1px solid var(--line);}
  .chat-head .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);}
  .chat-head .title{font-size:13.5px;font-weight:600;}
  .chat-head .sub{font-size:12px;color:var(--grey-light);margin-left:auto;font-family:'JetBrains Mono',monospace;}
  .chat-body{padding:22px 20px;display:flex;flex-direction:column;gap:14px;min-height:260px;}
  .bubble{max-width:82%;padding:12px 15px;border-radius:14px;font-size:14px;line-height:1.5;}
  .bubble.user{align-self:flex-end;background:var(--ink);color:#fff;border-bottom-right-radius:4px;}
  .bubble.ai{align-self:flex-start;background:var(--indigo-tint);color:var(--ink);border-bottom-left-radius:4px;}
  .bubble.ai .lbl{display:block;font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--indigo);margin-bottom:5px;letter-spacing:.04em;}
  .typing{align-self:flex-start;display:flex;gap:4px;padding:12px 15px;background:var(--indigo-tint);border-radius:14px;border-bottom-left-radius:4px;}
  .typing span{width:6px;height:6px;border-radius:50%;background:var(--indigo);opacity:.5;animation:tb 1.1s infinite;}
  .typing span:nth-child(2){animation-delay:.15s;} .typing span:nth-child(3){animation-delay:.3s;}
  @keyframes tb{0%,60%,100%{opacity:.3;transform:translateY(0);}30%{opacity:1;transform:translateY(-3px);}}
  .chat-foot{padding:14px 20px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;}
  .chat-foot .field{flex:1;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:9px 13px;font-size:13px;color:var(--grey-light);}
  .chat-foot .send{width:34px;height:34px;border-radius:9px;background:var(--indigo);display:flex;align-items:center;justify-content:center;flex:none;}

  .trust{padding:36px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .trust-row{display:flex;align-items:center;gap:26px;flex-wrap:wrap;justify-content:space-between;}
  .trust-label{font-size:12.5px;color:var(--grey-light);font-family:'JetBrains Mono',monospace;}
  .trust-chips{display:flex;gap:10px;flex-wrap:wrap;}
  .chip{font-size:13px;font-weight:500;color:var(--grey);background:var(--surface);border:1px solid var(--line);padding:8px 16px;border-radius:20px;}

  section{padding:96px 0;}
  .section-head{max-width:560px;margin-bottom:52px;}
  .section-head h2{font-size:32px;margin:14px 0 12px;}
  .section-head p{color:var(--grey);font-size:15.5px;}
  .process{display:grid;grid-template-columns:repeat(4,1fr);position:relative;}
  .process::before{content:'';position:absolute;top:19px;left:8%;right:8%;height:1px;background:var(--line);}
  .step{position:relative;padding-right:20px;}
  .step .num{width:38px;height:38px;border-radius:50%;background:var(--surface);border:1.5px solid var(--indigo);color:var(--indigo);font-family:'JetBrains Mono',monospace;font-size:13px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;position:relative;z-index:1;}
  .step h3{font-size:16.5px;margin-bottom:8px;}
  .step p{font-size:13.5px;color:var(--grey);}

  .features{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden;}
  .feat-card{background:var(--surface);padding:32px 28px;min-height:190px;}
  .feat-card .icon{width:38px;height:38px;border-radius:10px;background:var(--indigo-tint);display:flex;align-items:center;justify-content:center;margin-bottom:18px;}
  .feat-card h3{font-size:16.5px;margin-bottom:9px;font-family:'Space Grotesk',serif;}
  .feat-card p{font-size:14px;color:var(--grey);}

  .insight-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center;}
  .insight-copy p{color:var(--grey);font-size:15px;margin:16px 0 26px;max-width:440px;}
  .insight-list{display:flex;flex-direction:column;gap:14px;}
  .insight-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;list-style:none;}
  .insight-list .check{width:20px;height:20px;border-radius:50%;background:var(--mint-tint);display:flex;align-items:center;justify-content:center;flex:none;margin-top:1px;}
  .dash-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 24px 60px -24px rgba(15,18,34,.14);}
  .dash-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;}
  .dash-top .t{font-size:13px;font-weight:600;color:var(--grey);}
  .dash-top .badge{font-family:'JetBrains Mono',monospace;font-size:11px;background:var(--mint-tint);color:var(--mint);padding:4px 10px;border-radius:20px;}
  .bars{display:flex;align-items:flex-end;gap:10px;height:120px;margin-bottom:20px;}
  .bars .bar{flex:1;background:var(--indigo-tint);border-radius:6px 6px 0 0;}
  .bars .bar.hi{background:var(--indigo);}
  .dash-note{display:flex;gap:10px;align-items:flex-start;background:var(--paper);border-radius:12px;padding:14px 16px;}
  .dash-note .dot{width:6px;height:6px;border-radius:50%;background:var(--indigo);margin-top:6px;flex:none;}
  .dash-note p{font-size:13px;color:var(--grey);}

  .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start;}
  .contact-item{display:flex;gap:12px;align-items:flex-start;margin-bottom:20px;}
  .contact-item .ic{width:34px;height:34px;border-radius:9px;background:var(--indigo-tint);display:flex;align-items:center;justify-content:center;flex:none;}
  .contact-item .lbl{font-size:11.5px;color:var(--grey-light);font-family:'JetBrains Mono',monospace;margin-bottom:3px;}
  .contact-item .val{font-size:14.5px;font-weight:500;}
  .contact-form{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:0 24px 60px -28px rgba(15,18,34,.12);}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
  .field-group label{display:block;font-size:12.5px;font-weight:600;color:var(--ink);margin-bottom:7px;}
  .field-group input,.field-group select,.field-group textarea{width:100%;border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:11px 13px;font-size:14px;color:var(--ink);}
  .field-group.full{grid-column:1 / -1;}
  .form-note{font-size:12px;color:var(--grey-light);margin-top:12px;}

  footer{background:var(--navy-dark);color:#C7D3DF;}
  .footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 46px;}
  .footer-brand img{height:30px;width:auto;}
  .footer-brand-text p{font-size:13px;color:#9FB0C1;margin-top:14px;max-width:280px;}
  .footer-col h4{font-size:12.5px;letter-spacing:.09em;text-transform:uppercase;color:#FBC066;margin-bottom:18px;}
  .footer-col a{display:block;font-size:13.5px;color:#C7D3DF;margin-bottom:11px;}
  .footer-col a:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;justify-content:space-between;font-size:12px;color:#8FA1B4;}

  /* login */
  .login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--navy);padding:24px;}
  .login-card{background:#fff;border-radius:18px;padding:40px;width:100%;max-width:400px;box-shadow:0 30px 70px rgba(0,0,0,.3);}
  .login-card .lock-badge{width:44px;height:44px;border-radius:12px;background:var(--indigo-tint);display:flex;align-items:center;justify-content:center;margin-bottom:18px;}
  .login-card h2{font-size:21px;margin-bottom:6px;}
  .login-card p.sub{color:var(--grey);font-size:13.5px;margin-bottom:26px;}
  .login-field{margin-bottom:16px;}
  .login-field label{display:block;font-size:12.5px;font-weight:600;margin-bottom:7px;}
  .login-field input{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:14px;}
  .login-error{background:#FCEBEB;color:#A32D2D;font-size:12.5px;padding:10px 12px;border-radius:8px;margin-bottom:16px;display:none;}
  .login-hint{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:12px;color:var(--grey);margin-top:18px;}
  .login-back{display:inline-flex;align-items:center;gap:6px;color:#C7D8E8;font-size:13.5px;margin-top:22px;}
  .login-back:hover{color:#fff;}

  /* backoffice */
  .bo-shell{display:flex;min-height:100vh;}
  .bo-sidebar{background:var(--navy);width:240px;flex-shrink:0;display:flex;flex-direction:column;}
  .bo-brand{display:flex;align-items:center;gap:8px;padding:0 20px;height:76px;border-bottom:1px solid var(--navy-dark);}
  .bo-brand .mark{width:30px;height:30px;border-radius:8px;background:var(--indigo);display:flex;align-items:center;justify-content:center;flex:none;}
  .bo-brand .word{font-weight:700;color:#fff;font-size:14px;}
  .bo-brand .sub{font-size:10px;color:#8FA9C4;letter-spacing:.06em;}
  .bo-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px;}
  .bo-nav button{display:flex;align-items:center;gap:12px;border-radius:8px;text-align:left;padding:10px 12px;background:transparent;color:#B9CBDE;border:none;font-size:13.5px;font-weight:500;width:100%;}
  .bo-nav button.active{background:rgba(255,255,255,.1);color:#fff;}
  .bo-nav button .badge{margin-left:auto;font-size:11px;background:rgba(255,255,255,.12);padding:2px 7px;border-radius:999px;}
  .bo-foot{padding:14px 12px 18px;border-top:1px solid var(--navy-dark);display:flex;flex-direction:column;gap:6px;}
  .bo-foot button{display:flex;align-items:center;gap:10px;border-radius:8px;padding:9px 12px;background:transparent;border:none;color:#B9CBDE;font-size:13px;width:100%;text-align:left;}
  .bo-foot button:hover{background:rgba(255,255,255,.08);color:#fff;}
  .bo-main{flex:1;min-width:0;padding:32px;}
  .bo-h1{font-size:24px;margin-bottom:4px;}
  .bo-sub{color:var(--grey);font-size:14px;margin-bottom:28px;}
  .stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:32px;}
  .stat-card{border-radius:12px;padding:16px;display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);}
  .stat-card .ic{width:38px;height:38px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex:none;}
  .stat-card .num{font-size:20px;font-weight:700;font-family:'Space Grotesk',sans-serif;}
  .stat-card .lbl{font-size:12.5px;color:var(--grey);}
  .card{border-radius:12px;padding:20px;background:#fff;border:1px solid var(--line);}
  .card h3{font-size:15px;font-weight:600;margin-bottom:16px;font-family:'IBM Plex Sans';}
  .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .row-item{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line);}
  .row-item:last-child{border-bottom:none;}
  .list-panel{border-radius:12px;overflow:hidden;background:#fff;border:1px solid var(--line);}
  .list-row{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);background:none;border-left:none;border-right:none;border-top:none;}
  .list-row:last-child{border-bottom:none;}
  .list-row:hover{background:var(--paper);}
  .badge-status{font-size:11px;font-weight:600;padding:4px 10px;border-radius:999px;}
  .search-box{border-radius:10px;background:#fff;border:1px solid var(--line);padding:10px 14px;display:flex;align-items:center;gap:8px;max-width:320px;margin-bottom:16px;}
  .search-box input{border:none;outline:none;font-size:13.5px;flex:1;}
  .bo-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px;}
  .bo-form-grid input{border-radius:8px;border:1px solid var(--line);padding:9px 12px;font-size:13.5px;}
  .modal-overlay{position:fixed;inset:0;background:rgba(15,18,34,0.5);z-index:100;display:flex;align-items:center;justify-content:center;padding:20px;}
  .modal-box{border-radius:16px;background:#fff;width:min(560px,100%);max-height:85vh;overflow-y:auto;padding:28px;}
  .catalog-item{display:flex;align-items:center;gap:12px;border-radius:8px;padding:10px 12px;border:1px solid var(--line);margin-bottom:8px;}
  .catalog-item.checked{border-color:var(--indigo);background:var(--indigo-tint);}
  .catalog-item .qty-input{width:50px;border:1px solid var(--line);border-radius:6px;padding:5px 6px;font-size:13px;}
  .totals-box{border-radius:8px;padding:16px;background:var(--paper);margin-bottom:20px;}
  .totals-row{display:flex;justify-content:space-between;font-size:13px;color:var(--grey);margin-bottom:6px;}
  .totals-row.total{font-size:15px;font-weight:700;color:var(--ink);}
  .contract-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;}
  .contract-body{border-radius:12px;padding:24px;background:#fff;border:1px solid var(--line);font-size:13.5px;line-height:1.8;white-space:pre-line;}
  .sig-canvas{border:1px dashed var(--line);border-radius:10px;background:#fff;touch-action:none;cursor:crosshair;width:100%;max-width:480px;}
  .signed-box{border-radius:12px;padding:20px;background:var(--mint-tint);border:1px solid #B8ECD9;}

  @media(max-width:900px){
    .hero-grid,.insight-grid,.contact-grid,.contract-grid{grid-template-columns:1fr;}
    .process{grid-template-columns:1fr 1fr;row-gap:32px;} .process::before{display:none;}
    .feat-grid{grid-template-columns:1fr;}
    .nav-links{display:none;}
    .footer-top{grid-template-columns:1fr 1fr;}
    .stat-grid,.two-col,.bo-form-grid{grid-template-columns:1fr 1fr;}
    .bo-sidebar{width:200px;}
  }