@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@400;600;700;900&family=Inter:wght@400;500;600&display=swap');
  :root{
    --bg:#0A0A0F;
    --surface:#12121A;
    --surface-2:#1A1A28;
    --line:rgba(6,182,212,0.2);
    --text:#F8FAFC;
    --text-dim:#94A3B3;
    --text-dim2:#64748B;
    --teal:#00B4F5;
    --teal-light:#4DD3FA;
    --blue:#0D2C82;
    --blue-light:#1846B8;
    --amber:#FF8A3D;
    --radius:10px;
    --font-display:'Exo 2',sans-serif;
    --font-body:'Inter',sans-serif;
  }
  [data-theme="light"]{
    --bg:#F0F4FF;
    --surface:#FFFFFF;
    --surface-2:#EEF2FF;
    --line:rgba(2,132,199,0.2);
    --text:#0F172A;
    --text-dim:#334155;
    --text-dim2:#64748B;
    --teal:#0090C7;
    --teal-light:#00B4F5;
    --blue:#0D2C82;
    --blue-light:#1846B8;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-body);
    line-height:1.55;
    transition:background .3s ease, color .3s ease;
    overflow-x:hidden;
  }
  h1,h2,h3,.display{font-family:var(--font-display);letter-spacing:-0.01em;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  .wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;color:var(--text-dim);
    padding:6px 12px;border:1px solid var(--line);border-radius:999px;
    background:var(--surface);
  }
  .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);
    box-shadow:0 0 0 0 rgba(0,180,245,.6);
    animation:pulse 2s infinite;}
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(0,180,245,.55);}
    70%{box-shadow:0 0 0 8px rgba(0,180,245,0);}
    100%{box-shadow:0 0 0 0 rgba(0,180,245,0);}
  }

  /* header */
  header{
    position:sticky;top:0;z-index:100;
    background:color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:76px;}
  .logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:19px;}
  .logo-img{height:38px;width:auto;display:block;}
  [data-theme="light"] .logo-img{filter:none;}
  .logo .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--teal));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:14px;}
  .nav-links{display:flex;gap:32px;align-items:center;}
  .nav-links a{font-size:15px;color:var(--text-dim);transition:color .2s;}
  .nav-links a:hover{color:var(--text);}
  .nav-right{display:flex;align-items:center;gap:14px;}
  .theme-toggle{
    width:42px;height:24px;border-radius:999px;border:1px solid var(--line);
    background:var(--surface-2);position:relative;cursor:pointer;
  }
  .theme-toggle::after{
    content:'';position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;
    background:var(--teal);transition:left .25s ease;
  }
  [data-theme="light"] .theme-toggle::after{left:20px;}
  .btn{
    display:inline-flex;align-items:center;gap:8px;
    padding:11px 20px;border-radius:8px;font-size:14.5px;font-weight:600;
    cursor:pointer;border:1px solid transparent;transition:transform .15s ease, opacity .15s ease;
  }
  .btn:active{transform:scale(.97);}
  .btn-primary{background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;box-shadow:0 4px 20px rgba(13,44,130,.45);}
  .btn-primary:hover{opacity:.92;box-shadow:0 8px 30px rgba(13,44,130,.65);transform:translateY(-2px);}
  .btn-ghost{border-color:var(--line);color:var(--text);background:transparent;}
  .btn-ghost:hover{background:var(--surface-2);}
  .burger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;}
  .burger span{width:22px;height:2px;background:var(--text);}
  .mobile-menu{display:none;flex-direction:column;gap:2px;padding:14px 24px 20px;border-top:1px solid var(--line);}
  .mobile-menu a{padding:12px 0;font-size:15px;border-bottom:1px solid var(--line);color:var(--text);}
  .mobile-menu.open{display:flex;}

  /* hero */
  .hero{padding:88px 0 70px;}
  .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
  .eyebrow-loc{font-size:13.5px;color:var(--text-dim);margin-bottom:18px;}
  .hero h1{font-size:52px;line-height:1.08;font-weight:700;margin-bottom:22px;}
  .hero h1 .accent{background:linear-gradient(90deg,var(--blue-light),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent;}
  .hero p{font-size:17px;color:var(--text-dim);max-width:480px;margin-bottom:32px;}
  .hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}

  .panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    padding:22px;position:relative;overflow:hidden;
  }
  .panel::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--teal));}
  .panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;font-size:13px;color:var(--text-dim);}
  .stat-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px;}
  .stat-box{background:var(--surface-2);border-radius:8px;padding:16px;border:1px solid var(--line);}
  .stat-num{font-family:var(--font-display);font-size:28px;font-weight:700;color:var(--teal);}
  .stat-label{font-size:12.5px;color:var(--text-dim);margin-top:4px;}
  .uptime-bar{height:6px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin-top:6px;}
  .uptime-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--blue),var(--teal));transition:width 1.4s ease;}

  section{padding:80px 0;border-bottom:1px solid var(--line);}
  .section-tag{font-size:13.5px;color:var(--teal);margin-bottom:10px;}
  .section-head{max-width:620px;margin-bottom:46px;}
  .section-head h2{font-size:34px;font-weight:700;}
  .section-head p{color:var(--text-dim);margin-top:12px;font-size:16px;}

  .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}

  .service-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 22px;transition:border-color .2s ease, transform .2s ease;
  }
  .service-card:hover{border-color:var(--teal);transform:translateY(-3px);box-shadow:0 20px 40px rgba(0,0,0,.35),0 0 30px rgba(0,180,245,.2);}
  .service-icon{width:40px;height:40px;border-radius:9px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--teal);}
  .service-card h3{font-size:17.5px;margin-bottom:10px;font-weight:600;}
  .service-card p{font-size:14.5px;color:var(--text-dim);margin-bottom:16px;}
  .service-card .link{font-size:14px;color:var(--teal);font-weight:600;}

  .portfolio-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
  .portfolio-thumb{height:150px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:20px;color:var(--text-dim);border-bottom:1px solid var(--line);}
  .portfolio-body{padding:20px;}
  .portfolio-tag{font-size:12px;color:var(--teal);margin-bottom:6px;}
  .portfolio-body h3{font-size:18px;margin-bottom:8px;}
  .portfolio-body p{font-size:14px;color:var(--text-dim);margin-bottom:14px;}
  .chip-row{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px;}
  .chip{font-size:11.5px;padding:4px 9px;border-radius:99px;background:var(--surface-2);border:1px solid var(--line);color:var(--text-dim);}

  .gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
  .gallery-item{aspect-ratio:4/3;border-radius:var(--radius);border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--surface);font-size:13.5px;color:var(--text-dim);cursor:pointer;transition:background .2s;}
  .gallery-item:hover{background:var(--surface-2);}
  .gallery-item .gi{width:34px;height:34px;color:var(--teal);}

  .diff-list{display:flex;flex-direction:column;gap:16px;}
  .diff-item{display:flex;gap:14px;align-items:flex-start;}
  .check{width:22px;height:22px;border-radius:6px;background:rgba(0,180,245,.15);color:var(--teal);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:13px;margin-top:2px;}
  .diff-item p{font-size:15px;color:var(--text-dim);}

  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{display:flex;justify-content:space-between;align-items:center;padding:20px 0;cursor:pointer;font-size:16px;font-weight:600;}
  .faq-q .plus{font-size:20px;color:var(--teal);transition:transform .25s ease;}
  .faq-item.open .plus{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .faq-a p{padding-bottom:20px;color:var(--text-dim);font-size:14.5px;max-width:640px;}

  .contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;}
  .contact-info-item{display:flex;gap:14px;margin-bottom:22px;}
  .contact-info-item .ic{width:38px;height:38px;border-radius:9px;background:var(--surface-2);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--teal);flex-shrink:0;}
  .contact-info-item strong{display:block;font-size:14px;}
  .contact-info-item span{font-size:14px;color:var(--text-dim);}

  form{display:flex;flex-direction:column;gap:14px;}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
  label{font-size:13px;color:var(--text-dim);margin-bottom:6px;display:block;}
  input, select, textarea{
    width:100%;background:var(--surface);border:1px solid var(--line);border-radius:8px;
    padding:12px 14px;font-size:14.5px;color:var(--text);font-family:var(--font-body);
  }
  input:focus, select:focus, textarea:focus{outline:2px solid var(--teal);outline-offset:1px;border-color:var(--teal);}
  textarea{min-height:100px;resize:vertical;}
  .field-error{font-size:12.5px;color:var(--amber);display:none;margin-top:4px;}
  .field.invalid input, .field.invalid select, .field.invalid textarea{border-color:var(--amber);}
  .field.invalid .field-error{display:block;}
  .success-msg{display:none;background:rgba(47,217,196,.12);border:1px solid var(--teal);color:var(--teal);padding:14px 16px;border-radius:8px;font-size:14px;margin-top:6px;}
  .success-msg.show{display:block;}

  footer{padding:50px 0 30px;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px;}
  footer h4{font-size:14px;margin-bottom:16px;}
  footer .flinks a{display:block;font-size:14px;color:var(--text-dim);margin-bottom:10px;}
  .foot-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;font-size:13px;color:var(--text-dim);flex-wrap:wrap;gap:10px;}

  .wa-float{
    position:fixed;bottom:22px;right:22px;width:56px;height:56px;border-radius:50%;
    background:var(--teal);display:flex;align-items:center;justify-content:center;
    box-shadow:0 6px 20px rgba(0,0,0,.3);z-index:200;color:#062522;
  }

  /* SEO panel */
  .seo-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start;}
  .seo-score-ring{
    width:120px;height:120px;border-radius:50%;
    background:conic-gradient(var(--teal) 0deg 302deg, var(--surface-2) 302deg 360deg);
    display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
  }
  .seo-score-ring::before{
    content:'';position:absolute;
  }
  .seo-score-inner{
    width:94px;height:94px;border-radius:50%;background:var(--surface);
    display:flex;flex-direction:column;align-items:center;justify-content:center;
  }
  .seo-score-inner .n{font-family:var(--font-display);font-size:26px;font-weight:700;color:var(--teal);}
  .seo-score-inner .l{font-size:10.5px;color:var(--text-dim);}
  .seo-keyword{
    display:flex;justify-content:space-between;align-items:center;
    background:var(--surface-2);border:1px solid var(--line);border-radius:8px;
    padding:10px 14px;margin-bottom:10px;font-size:13.5px;
  }
  .seo-keyword .vol{color:var(--text-dim);font-size:12px;}
  .seo-check-list{display:flex;flex-direction:column;gap:10px;}
  .seo-check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;}
  .seo-check-row .ic-ok{color:var(--teal);flex-shrink:0;}
  .seo-check-row .ic-warn{color:var(--amber);flex-shrink:0;}
  .seo-check-row span.txt{color:var(--text-dim);}

  @media(max-width:880px){
    .nav-links,.nav-right .btn-ghost{display:none;}
    .burger{display:flex;}
    .hero-grid{grid-template-columns:1fr;}
    .hero h1{font-size:38px;}
    .grid-4{grid-template-columns:1fr 1fr;}
    .grid-3,.grid-2{grid-template-columns:1fr;}
    .gallery{grid-template-columns:1fr 1fr;}
    .contact-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .form-row{grid-template-columns:1fr;}
    section{padding:56px 0;}
  }