:root{
      --bg0:#ffffff;
      --bg1:#f6f9ff;
      --text:#081022;
      --muted:#4a5a78;

      --blue:#0B5FFF;
      --blue2:#2D7CFF;
      --blue3:#7bb2ff;

      --shadow: 0 24px 70px rgba(8,16,34,0.11);
      --shadow2: 0 12px 26px rgba(8,16,34,0.10);
      --shadow3: 0 8px 16px rgba(8,16,34,0.08);

      --r:18px;
      --r2:26px;
      --r3:34px;
      --max: 1200px;

      --ease: cubic-bezier(.2,.85,.2,1);
    }

    *{ box-sizing:border-box; }
    html,body{ height:100%; }
    html{ scroll-behavior: smooth; }
    body{
      margin:0;
      font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      color: var(--text);
      background:
        radial-gradient(1100px 620px at 10% -15%, rgba(11,95,255,0.24), transparent 62%),
        radial-gradient(980px 560px at 95% 5%, rgba(45,124,255,0.16), transparent 58%),
        radial-gradient(900px 540px at 50% 110%, rgba(123,178,255,0.12), transparent 62%),
        linear-gradient(180deg, var(--bg0), var(--bg1) 28%, var(--bg0) 100%);
      overflow-x:hidden;
    }

    a{ color:inherit; text-decoration:none; }
    .container{ width:min(100% - 34px, var(--max)); margin:0 auto; }

    /* ambient blobs */
    .ambient{
      position:fixed;
      inset:-140px;
      pointer-events:none;
      z-index:-2;
      filter: blur(12px) saturate(1.05);
      opacity: .9;
    }
    .blob{
      position:absolute;
      will-change: transform;
      width: 520px;
      height: 520px;
      border-radius: 999px;
      background: radial-gradient(circle at 35% 35%, rgba(123,178,255,0.45), rgba(11,95,255,0.18) 45%, transparent 70%);
      animation: float1 11s var(--ease) infinite;
    }
    .blob.b2{
      width: 640px;
      height: 640px;
      left: 60%;
      top: 12%;
      background: radial-gradient(circle at 40% 30%, rgba(45,124,255,0.34), rgba(11,95,255,0.16) 48%, transparent 72%);
      animation: float2 13s var(--ease) infinite;
    }
    .blob.b3{
      width: 560px;
      height: 560px;
      left: 22%;
      top: 70%;
      background: radial-gradient(circle at 45% 35%, rgba(11,95,255,0.22), rgba(123,178,255,0.12) 54%, transparent 74%);
      animation: float3 15s var(--ease) infinite;
      opacity: .8;
    }
    @keyframes float1{
      0%,100%{ transform: translate(6%, 8%) scale(1); }
      50%{ transform: translate(16%, -6%) scale(1.02); }
    }
    @keyframes float2{
      0%,100%{ transform: translate(-8%, 10%) scale(1); }
      50%{ transform: translate(-18%, -8%) scale(1.03); }
    }
    @keyframes float3{
      0%,100%{ transform: translate(0%, 0%) scale(1); }
      50%{ transform: translate(10%, -12%) scale(1.02); }
    }

    /* subtle grid */
    .gridbg{
      position:fixed; inset:0;
      background:
        linear-gradient(to right, rgba(8,16,34,.035) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(8,16,34,.035) 1px, transparent 1px);
      background-size: 72px 72px;
      mask-image: radial-gradient(900px 620px at 50% 18%, black, transparent 78%);
      pointer-events:none;
      z-index:-1;
    }

    /* topbar */
    .topbar{
      position:sticky; top:0; z-index:60;
      backdrop-filter: blur(8px);
      background: rgba(246,249,255,0.62);
      border-bottom: 1px solid rgba(8,16,34,0.09);
    }
    .topbar-inner{
      display:flex; align-items:center; justify-content:space-between;
      padding: 14px 0; gap: 12px;
    }

    .brand{
      display:flex; align-items:center; gap: 12px;
      font-weight: 950;
      letter-spacing: -0.03em;
    }
    .mark{
      width: 40px; height: 40px;
      border-radius: 16px;
      background: radial-gradient(120% 180% at 30% 0%, var(--blue3), var(--blue));
      box-shadow: 0 20px 50px rgba(11,95,255,0.24);
      display:grid; place-items:center;
      position:relative; overflow:hidden;
    }
    .mark::after{
      content:"";
      position:absolute; inset:-2px;
      background: linear-gradient(125deg, transparent 0%, rgba(255,255,255,0.40) 35%, transparent 65%);
      transform: translateX(-140%) skewX(-18deg);
      animation: shine 4.8s var(--ease) infinite;
      opacity:.85;
    }
    @keyframes shine{
      0%,55%{ transform: translateX(-140%) skewX(-18deg); }
      85%,100%{ transform: translateX(140%) skewX(-18deg); }
    }

    .brand small{
      display:block;
      margin-top: 2px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    .nav{
      display:flex; gap: 10px; align-items:center;
      color: var(--muted);
      font-weight: 800;
      font-size: 14px;
    }
    .nav a{
      padding: 10px 12px;
      border-radius: 14px;
      transition: background .18s var(--ease), color .18s var(--ease);
    }
    .nav a:hover{
      background: rgba(11,95,255,0.08);
      color: var(--text);
    }

    /* buttons */
    .btn{
      border: 1px solid rgba(8,16,34,0.10);
      background: rgba(255,255,255,0.78);
      padding: 12px 14px;
      border-radius: 16px;
      font-weight: 900;
      display:inline-flex; gap: 10px;
      align-items:center; justify-content:center;
      cursor:pointer;
      box-shadow: var(--shadow3);
      transition: transform .16s var(--ease), box-shadow .16s var(--ease), background .16s var(--ease);
      user-select:none;
      position:relative;
      overflow:hidden;
      white-space: nowrap;
    }
    .btn:hover{ transform: translateY(-1px); box-shadow: var(--shadow2); }
    .btn:active{ transform: translateY(0px); }

    .btn-primary{
      border:none;
      color:#fff;
      background: radial-gradient(120% 180% at 30% 0%, var(--blue3), var(--blue));
      box-shadow: 0 22px 60px rgba(11,95,255,0.22);
    }
    .btn-primary::after{
      content:"";
      position:absolute; inset:-2px;
      background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.22) 35%, transparent 60%);
      transform: translateX(-120%) skewX(-18deg);
      transition: transform .65s var(--ease);
    }
    .btn-primary:hover::after{ transform: translateX(120%) skewX(-18deg); }

    .btn-ghost{ background: rgba(255,255,255,0.55); }

    /* hero */
    header.hero{ padding: 64px 0 18px; }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.18fr 0.82fr;
      gap: 22px;
      align-items:start;
    }
    .badge{
      display:inline-flex; align-items:center; gap: 10px;
      padding: 10px 12px;
      border-radius: 999px;
      background: rgba(11,95,255,0.09);
      border: 1px solid rgba(11,95,255,0.18);
      color: #0A3EA8;
      font-weight: 950;
      letter-spacing: -0.01em;
      font-size: 13px;
      width: fit-content;
    }

    .title{
      margin: 14px 0 10px;
      font-size: clamp(34px, 4.6vw, 60px);
      letter-spacing: -0.05em;
      line-height: 1.01;
    }
    .gradient{
      background: linear-gradient(90deg, var(--blue), var(--blue2), var(--blue3));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .subtitle{
      margin: 0 0 18px;
      color: var(--muted);
      font-size: 16px;
      font-weight: 650;
      max-width: 70ch;
      line-height: 1.62;
    }
    .hero-cta{
      display:flex; gap: 12px; flex-wrap: wrap;
      align-items:center; margin-top: 14px;
    }
    .stats{
      margin-top: 18px;
      display:flex; gap: 12px; flex-wrap: wrap;
    }
    .stat{
      padding: 10px 12px;
      border-radius: 16px;
      border: 1px solid rgba(8,16,34,0.10);
      background: rgba(255,255,255,0.62);
      font-weight: 900;
      color: var(--muted);
      box-shadow: 0 10px 18px rgba(8,16,34,0.06);
    }
    .stat b{ color: var(--text); font-weight: 950; }

    /* right panel */
    .panel{
      border-radius: var(--r3);
      border: 1px solid rgba(255,255,255,0.55);
      background: rgba(255,255,255,0.86);
      box-shadow: var(--shadow);
      overflow:hidden;
      position:relative;
    }
    .panel::before{
      content:"";
      position:absolute; inset:-2px;
      background: radial-gradient(1000px 280px at 40% 0%, rgba(11,95,255,0.22), transparent 62%);
      pointer-events:none;
    }
    .panel::after{
      content:"";
      position:absolute; inset:0;
      border-radius: var(--r3);
      padding: 1px;
      background: linear-gradient(135deg, rgba(11,95,255,0.28), rgba(255,255,255,0.0), rgba(45,124,255,0.22));
      -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events:none;
      opacity:.9;
    }
    .panel-inner{ position: relative; padding: 18px; }
    .panel h3{
      margin:0 0 6px;
      letter-spacing:-0.03em;
      font-weight: 950;
      font-size: 18px;
    }
    .panel p{
      margin:0 0 14px;
      color: var(--muted);
      font-weight: 700;
      font-size: 14px;
      line-height: 1.6;
    }

    .mini-proof{
      display:flex; gap: 10px; flex-wrap: wrap;
      margin: 12px 0 0;
    }
    .chip{
      display:inline-flex; align-items:center; gap: 8px;
      padding: 8px 10px;
      border-radius: 999px;
      border: 1px solid rgba(11,95,255,0.18);
      background: rgba(11,95,255,0.06);
      color: #0A3EA8;
      font-weight: 950;
      font-size: 12px;
    }

    .form{ display:grid; gap: 10px; margin-top: 10px; }
    .input{
      width:100%;
      padding: 12px 12px;
      border-radius: 16px;
      border: 1px solid rgba(8,16,34,0.10);
      background: rgba(255,255,255,0.88);
      font-weight: 750;
      color: var(--text);
      outline:none;
      transition: box-shadow .18s var(--ease), border-color .18s var(--ease);
    }
    .input:focus{
      border-color: rgba(11,95,255,0.34);
      box-shadow: 0 0 0 6px rgba(11,95,255,0.12);
    }

    section{ padding: 36px 0; }
    .section-title{
      font-size: 28px;
      letter-spacing: -0.03em;
      margin: 0 0 10px;
      font-weight: 950;
    }
    .section-sub{
      margin: 0 0 18px;
      color: var(--muted);
      font-weight: 700;
      max-width: 90ch;
      line-height: 1.62;
    }

    .cards{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }
    .card{
      border: 1px solid rgba(8,16,34,0.10);
      border-radius: var(--r2);
      background: rgba(255,255,255,0.72);
      box-shadow: 0 10px 22px rgba(8,16,34,0.06);
      padding: 18px;
      position:relative;
      overflow:hidden;
      transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
    }
    .card:hover{
      transform: translateY(-2px);
      box-shadow: 0 22px 55px rgba(8,16,34,0.10);
      border-color: rgba(11,95,255,0.22);
    }
    .icon{
      width: 42px; height: 42px;
      border-radius: 16px;
      background: rgba(11,95,255,0.10);
      border: 1px solid rgba(11,95,255,0.16);
      display:grid; place-items:center;
    }
    .card strong{
      display:block;
      margin: 12px 0 8px;
      letter-spacing: -0.02em;
      font-weight: 950;
    }
    .card p{
      margin:0;
      color: var(--muted);
      font-weight: 700;
      font-size: 14px;
      line-height: 1.58;
    }

    /* portfolio */
    .portfolio{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }
    .item{
      padding: 14px;
      cursor: pointer;
      user-select:none;
    }
    .thumb{
      aspect-ratio: 16/9;
      border-radius: 20px;
      border: 1px solid rgba(8,16,34,0.12);
      background:
        radial-gradient(900px 280px at 25% 10%, rgba(11,95,255,0.22), transparent 62%),
        linear-gradient(135deg, rgba(11,95,255,0.10), rgba(255,255,255,0.82));
      background-size: cover;
      background-position: center;
      display:grid;
      place-items:center;
      position: relative;
      overflow:hidden;
    }
    .thumb::after{
      content:"";
      position:absolute; inset:-2px;
      background: radial-gradient(320px 180px at 70% 10%, rgba(255,255,255,0.38), transparent 62%);
      pointer-events:none;
    }
    .thumb::before{
      content:"";
      position:absolute; inset:0;
      background: linear-gradient(180deg, rgba(0,0,0,0.00), rgba(0,0,0,0.20));
      opacity:.35;
      pointer-events:none;
    }
    .play{
      width: 58px; height: 58px;
      border-radius: 999px;
      background: radial-gradient(120% 180% at 30% 0%, var(--blue3), var(--blue));
      box-shadow: 0 22px 60px rgba(11,95,255,0.26);
      display:grid; place-items:center;
      transform: translateZ(0);
      position: relative;
      z-index: 1;
    }
    .meta{
      margin-top: 10px;
      display:flex; justify-content: space-between; gap: 10px; align-items:flex-start;
    }
    .meta .t{ font-weight: 950; letter-spacing: -0.02em; }
    .meta .s{
      margin-top: 3px;
      color: var(--muted);
      font-weight: 750;
      font-size: 13px;
      line-height: 1.35;
    }
    .pill{
      padding: 8px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 950;
      color: #0A3EA8;
      background: rgba(11,95,255,0.08);
      border: 1px solid rgba(11,95,255,0.16);
      white-space: nowrap;
    }
    .tagrow{ display:flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
    .tag{
      display:inline-flex;
      padding: 7px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 950;
      color: #0A3EA8;
      background: rgba(11,95,255,0.06);
      border: 1px solid rgba(11,95,255,0.14);
    }

    /* testimonials */
    .testimonials{
      display:grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 14px;
      align-items: stretch;
    }
    .quote{
      font-size: 16px;
      color: var(--text);
      font-weight: 800;
      letter-spacing: -0.01em;
      line-height: 1.6;
    }
    .who{
      margin-top: 12px;
      display:flex; gap: 10px; align-items:center;
      color: var(--muted);
      font-weight: 900;
      font-size: 13px;
    }
    .avatar{
      width: 36px; height: 36px;
      border-radius: 16px;
      background: rgba(11,95,255,0.10);
      border: 1px solid rgba(11,95,255,0.18);
      display:grid; place-items:center;
      font-weight: 950;
      color: #0A3EA8;
    }

    /* pricing */
    .pricing{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      align-items: stretch;
    }
    .price-card{ padding: 18px; }
    .featured{
      border-color: rgba(11,95,255,0.28);
      box-shadow: 0 30px 90px rgba(11,95,255,0.16);
      transform: translateY(-2px);
    }
    .price{
      margin: 10px 0 2px;
      font-size: 38px;
      font-weight: 950;
      letter-spacing: -0.05em;
    }
    .price small{ font-size: 13px; color: var(--muted); font-weight: 900; }
    ul.list{
      margin: 14px 0 16px; padding:0;
      list-style:none;
      display:grid; gap: 10px;
      color: var(--muted);
      font-weight: 800;
      font-size: 14px;
      line-height: 1.45;
    }
    .li{
      display:flex; gap: 10px; align-items:flex-start;
    }
    .check{
      width: 18px; height: 18px; border-radius: 7px;
      background: rgba(11,95,255,0.12);
      border: 1px solid rgba(11,95,255,0.22);
      display:grid; place-items:center;
      flex: 0 0 18px;
      margin-top: 1px;
      color: #0A3EA8;
      font-weight: 950;
      font-size: 12px;
    }

    /* faq */
    .faq{ display:grid; gap: 10px; }
    details{
      border: 1px solid rgba(8,16,34,0.10);
      background: rgba(255,255,255,0.72);
      border-radius: var(--r2);
      padding: 14px 16px;
      box-shadow: 0 10px 22px rgba(8,16,34,0.06);
    }
    summary{
      cursor:pointer;
      font-weight: 950;
      letter-spacing: -0.02em;
      list-style:none;
    }
    summary::-webkit-details-marker{ display:none; }
    details p{
      margin: 10px 0 0;
      color: var(--muted);
      font-weight: 750;
      font-size: 14px;
      line-height: 1.58;
    }

    /* footer CTA */
    .cta-band{
      display:flex; flex-wrap: wrap;
      align-items:center; justify-content: space-between;
      gap: 14px;
      border-radius: var(--r3);
      border: 1px solid rgba(11,95,255,0.16);
      background:
        radial-gradient(1100px 320px at 30% 0%, rgba(11,95,255,0.18), transparent 62%),
        rgba(255,255,255,0.74);
      box-shadow: var(--shadow);
      padding: 22px;
    }
    .cta-band h3{
      margin: 0 0 6px;
      letter-spacing: -0.03em;
      font-size: 22px;
      font-weight: 950;
    }
    .cta-band p{
      margin:0;
      color: var(--muted);
      font-weight: 750;
      max-width: 72ch;
      line-height: 1.58;
    }

    .fine{
      margin-top: 16px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 750;
      line-height: 1.45;
    }

    /* floating WA */
    .wa{
      position: fixed;
      right: 18px; bottom: 18px;
      z-index: 70;
      display:flex; gap: 10px; align-items:center;
    }
    .wa-hint{
      display:none;
      padding: 10px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,0.92);
      border: 1px solid rgba(8,16,34,0.10);
      box-shadow: var(--shadow2);
      color: var(--muted);
      font-weight: 950;
      font-size: 13px;
    }
    .wa-btn{
      width: 60px; height: 60px;
      border-radius: 20px;
      border: none;
      background: linear-gradient(145deg, #25D366, #1FBC57);
      box-shadow: 0 26px 70px rgba(31,188,87,0.26);
      cursor: pointer;
      display:grid; place-items:center;
      transition: transform .16s var(--ease), box-shadow .16s var(--ease);
    }
    .wa-btn:hover{ transform: translateY(-1px); box-shadow: 0 34px 90px rgba(31,188,87,0.28); }
    .wa-btn:active{ transform: translateY(0px); }

    /* mobile sticky CTA */
    .mobile-cta{
      position: fixed;
      left: 14px; right: 14px;
      bottom: 14px;
      z-index: 65;
      display:none;
      padding: 10px;
      border-radius: 20px;
      border: 1px solid rgba(8,16,34,0.10);
      background: rgba(255,255,255,0.80);
      backdrop-filter: blur(8px);
      box-shadow: var(--shadow2);
    }
    .mobile-cta .row{
      display:flex; gap: 10px;
    }
    .mobile-cta .row .btn{ flex: 1; }

    /* modal */
    .modal{
      position: fixed; inset: 0;
      display:none;
      z-index: 80;
      background: rgba(8,16,34,0.55);
      backdrop-filter: blur(8px);
      padding: 18px;
    }
    .modal.open{ display:flex; align-items:center; justify-content:center; }
    .modal-card{
      width: min(980px, 100%);
      border-radius: 26px;
      background: rgba(255,255,255,0.92);
      border: 1px solid rgba(255,255,255,0.55);
      box-shadow: 0 44px 140px rgba(8,16,34,0.34);
      overflow:hidden;
    }
    .modal-top{
      display:flex; align-items:center; justify-content:space-between;
      padding: 14px 16px;
      border-bottom: 1px solid rgba(8,16,34,0.10);
      gap: 10px;
    }
    .modal-top strong{
      letter-spacing: -0.03em;
      font-weight: 950;
    }
    .x{
      border: 1px solid rgba(8,16,34,0.12);
      background: rgba(255,255,255,0.70);
      border-radius: 16px;
      padding: 10px 12px;
      font-weight: 950;
      cursor: pointer;
    }
    .modal-body{ padding: 14px 16px 16px; }
    .frame-wrap{
      border-radius: 20px;
      overflow:hidden;
      border: 1px solid rgba(8,16,34,0.12);
      background: #000;
      aspect-ratio: 16/9;
    }
    .frame-wrap iframe{
      width:100%;
      height:100%;
      border:0;
      display:block;
      background:#000;
    }
    .modal-actions{
      display:flex; gap: 10px; flex-wrap: wrap;
      margin-top: 12px;
      justify-content: space-between;
      align-items:center;
    }
    .note{
      color: var(--muted);
      font-weight: 850;
      font-size: 13px;
      line-height: 1.4;
      max-width: 64ch;
    }

    /* reveal */
    .reveal{
      opacity:0;
      transform: translateY(14px);
      transition: opacity .55s var(--ease), transform .55s var(--ease);
    }
    .reveal.in{ opacity:1; transform: translateY(0); }

    /* responsive */
    
    /* performance: render offscreen sections lazily */
    @supports (content-visibility: auto){
      section{
        content-visibility: auto;
        contain-intrinsic-size: 1000px;
      }
    }

    /* performance: reduce expensive effects while actively scrolling */
    body.perf-scrolling .ambient{
      filter: blur(8px) saturate(1);
      opacity: .55;
    }
    body.perf-scrolling .blob{ animation-play-state: paused; }
    body.perf-scrolling .gridbg{ opacity: .22; }
    body.perf-scrolling .topbar{ backdrop-filter: none; background: rgba(246,249,255,0.88); }
    body.perf-scrolling .mobile-cta{ backdrop-filter: none; }
    body.perf-scrolling .btn,
    body.perf-scrolling .card{
      transition: none;
    }
@media (max-width: 980px){
      .hero-grid{ grid-template-columns: 1fr; }
      .cards, .portfolio, .pricing{ grid-template-columns: 1fr; }
      .testimonials{ grid-template-columns: 1fr; }
      .nav{ display:none; }
      .wa-hint{ display:block; }
      .mobile-cta{ display:block; }
      header.hero{ padding-bottom: 90px; }
    }

    @media (prefers-reduced-motion: reduce){
      *{ transition: none !important; scroll-behavior: auto !important; }
      .reveal{ opacity:1; transform:none; }
      .btn-primary::after{ display:none; }
      .blob{ animation: none !important; }
      .mark::after{ animation: none !important; }
    }