:root{
    --purple:#6C63FF; --purple-d:#5148e0;
    --admin:#FF6B35; --family:#00BCD4;
    --ink:#0F172A; --ink-2:#334155; --muted:#64748B;
    --bg:#F6F7FB; --surface:#FFFFFF; --line:#E7EAF0;
    --green:#16A34A; --red:#EF4444;
    --shadow:0 10px 40px -12px rgba(15,23,42,.18);
    --shadow-sm:0 4px 18px -8px rgba(15,23,42,.20);
    --radius:22px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth;scroll-padding-top:76px}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased;
    overflow-x:clip;
  }
  a{color:inherit;text-decoration:none}
  .wrap{max-width:1120px;margin:0 auto;padding:0 24px}
  section{padding:96px 0}
  .eyebrow{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--purple)}
  h2{font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.1;margin:14px 0 16px}
  .lead{font-size:clamp(16px,2vw,19px);color:var(--ink-2);max-width:640px}

  /* NAV */
  nav{position:sticky;top:0;z-index:50;background:rgba(246,247,251,.82);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
  nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.01em}
  .brand .logo{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--purple),var(--admin));display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:var(--shadow-sm)}
  .navlinks{display:flex;gap:28px;font-size:14.5px;font-weight:600;color:var(--ink-2)}
  .navlinks a:hover{color:var(--purple)}
  @media(max-width:760px){.navlinks{display:none}}

  /* HERO */
  .hero{position:relative;overflow:hidden;padding:72px 0 40px}
  .hero::before{content:"";position:absolute;inset:0;background:
    radial-gradient(680px 420px at 80% -10%,rgba(108,99,255,.18),transparent 60%),
    radial-gradient(560px 420px at 8% 20%,rgba(255,107,53,.12),transparent 60%);pointer-events:none}
  .hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
  .hero h1{font-size:clamp(34px,5.4vw,58px);font-weight:850;letter-spacing:-.03em;line-height:1.03}
  .hero h1 .grad{background:linear-gradient(120deg,var(--purple),var(--admin));-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero p.sub{margin-top:20px;font-size:19px;color:var(--ink-2);max-width:520px}
  .cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
  .btn{display:inline-flex;align-items:center;gap:9px;padding:14px 24px;border-radius:999px;font-weight:700;font-size:15px;transition:transform .15s ease,box-shadow .15s ease}
  .btn-primary{background:var(--purple);color:#fff;box-shadow:0 12px 30px -10px rgba(108,99,255,.6)}
  .btn-primary:hover{transform:translateY(-2px)}
  .btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
  .btn-ghost:hover{transform:translateY(-2px)}
  .kpis{display:flex;gap:30px;margin-top:38px;flex-wrap:wrap}
  .kpi b{display:block;font-size:28px;font-weight:850;letter-spacing:-.02em}
  .kpi span{font-size:13px;color:var(--muted);font-weight:600}
  .hero-stage{position:relative;display:flex;justify-content:center;align-items:flex-end;gap:18px;min-height:520px}
  .hero-stage .phone.back{transform:translateY(26px) scale(.86) rotate(-4deg);opacity:.92;z-index:1}
  .hero-stage .phone.front{z-index:2;transform:rotate(2deg)}
  @media(max-width:900px){.hero .wrap{grid-template-columns:1fr}.hero-stage{min-height:0;margin-top:20px}}

  /* PHONE MOCKUP */
  .phone{position:relative;width:236px;flex:0 0 auto;border-radius:40px;background:#0B1020;padding:9px;box-shadow:var(--shadow);border:1px solid #23283b}
  .phone.sm{width:206px;border-radius:34px;padding:8px}
  .phone media,.phone img,.phone video{width:100%;display:block;border-radius:32px;background:#fff}
  .phone.sm img,.phone.sm video{border-radius:27px}
  .phone video{aspect-ratio:480/1042;object-fit:cover;cursor:pointer}
  .phone:has(video){position:relative}
  .phone:has(video)::after{content:"▶";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:52px;height:52px;display:flex;align-items:center;justify-content:center;padding-left:4px;font-size:19px;color:#fff;background:rgba(11,16,32,.55);border-radius:50%;pointer-events:none;transition:opacity .25s ease;backdrop-filter:blur(3px)}
  .phone.playing::after{opacity:0}
  video:fullscreen{object-fit:contain;background:#000;border-radius:0}
  video:-webkit-full-screen{object-fit:contain;background:#000;border-radius:0}
  .vbar{position:absolute;left:26px;right:26px;bottom:26px;height:4px;border-radius:99px;background:rgba(255,255,255,.4);opacity:0;transition:opacity .2s ease;cursor:pointer;z-index:3}
  .vfill{height:100%;width:0;border-radius:inherit;background:var(--purple)}
  .vfs{position:absolute;top:24px;right:24px;width:28px;height:28px;border-radius:9px;border:0;display:flex;align-items:center;justify-content:center;background:rgba(11,16,32,.55);color:#fff;font-size:13px;cursor:pointer;opacity:0;transition:opacity .2s ease;z-index:3;backdrop-filter:blur(3px)}
  .phone.playing .vbar,.phone.playing .vfs,.phone:hover .vbar,.phone:hover .vfs{opacity:1}

  /* PROBLEM/SOLUTION */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:26px}
  @media(max-width:820px){.split{grid-template-columns:1fr}}
  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
  .card h3{font-size:19px;margin-bottom:10px;letter-spacing:-.01em}
  .card.problem h3{color:var(--red)} .card.solution h3{color:var(--green)}
  .card ul{list-style:none;display:grid;gap:12px;margin-top:6px}
  .card li{display:flex;gap:11px;color:var(--ink-2);font-size:15.5px}
  .card li::before{content:"";flex:0 0 auto;width:20px;height:20px;margin-top:2px;border-radius:6px;background:currentColor;opacity:.14}
  .card.problem li{color:#9a3b3b}.card.solution li{color:#2c6b47}

  /* PERSONAS */
  .persona-nav{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:56px}
  .pchip{display:inline-flex;align-items:center;gap:9px;padding:11px 20px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-weight:700;font-size:14.5px;color:var(--ink-2);box-shadow:var(--shadow-sm)}
  .pchip .dot{width:10px;height:10px;border-radius:50%}
  .persona{padding:70px 0;border-top:1px solid var(--line)}
  .persona .head{display:flex;align-items:center;gap:14px;margin-bottom:8px}
  .badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;font-weight:700;font-size:13px;color:#fff}
  .persona h2{margin:6px 0 14px}
  .feat{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:8px;max-width:560px}
  @media(max-width:520px){.feat{grid-template-columns:1fr}}
  .feat div{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow-sm)}
  .feat h4{font-size:15px;margin-bottom:4px}
  .feat p{font-size:13.5px;color:var(--muted)}
  .persona-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
  @media(max-width:900px){.persona-grid{grid-template-columns:1fr}}
  .gallery{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

  /* strip of shots */
  .shots{display:flex;gap:18px;overflow-x:auto;padding:10px 4px 22px;scroll-snap-type:x mandatory}
  .shots .phone{scroll-snap-align:center;cursor:zoom-in}
  .shots::-webkit-scrollbar{height:8px}
  .shots::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px}
  .cap{text-align:center;font-size:12.5px;color:var(--muted);margin-top:9px;font-weight:600}

  /* FEATURES GRID */
  .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  @media(max-width:860px){.grid3{grid-template-columns:1fr}}
  .fcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
  .fcard:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .ficon{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;font-size:22px;margin-bottom:14px}
  .fcard h3{font-size:17px;margin-bottom:7px}
  .fcard p{font-size:14.5px;color:var(--muted)}

  /* VIDEOS */
  .videos{background:linear-gradient(180deg,#0e1330,#141a3d);color:#fff;border-radius:36px;padding:64px 34px}
  .videos .eyebrow{color:#b9b4ff}
  .videos h2{color:#fff}
  .videos .lead{color:#c7cce0}
  .vgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:44px}
  @media(max-width:860px){.vgrid{grid-template-columns:1fr}}
  .vitem{display:flex;flex-direction:column;align-items:center}
  .vitem .phone{width:220px}
  .vitem p{margin-top:14px;font-weight:600;font-size:14.5px;color:#e7e9f5;text-align:center}
  .vitem small{color:#9aa0c0;font-size:12.5px}

  /* STACK */
  .stack{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .tag{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:10px 18px;font-weight:700;font-size:14px;color:var(--ink-2);box-shadow:var(--shadow-sm)}
  .tag b{color:var(--purple)}

  /* FOOTER */
  footer{background:#0B1020;color:#c7cce0;padding:70px 0 46px;margin-top:0}
  footer .wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:start}
  @media(max-width:760px){footer .wrap{grid-template-columns:1fr}}
  footer h3{color:#fff;font-size:22px;margin-bottom:10px}
  footer p{max-width:420px;font-size:15px}
  footer .who{font-size:14px;line-height:1.9}
  footer .who b{color:#fff}
  .fnote{margin-top:40px;padding-top:22px;border-top:1px solid #23283b;font-size:12.5px;color:#7d84a6;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

  /* MOBILE */
  @media(max-width:560px){
    section{padding:64px 0}
    .persona{padding:52px 0}
    .hero{padding:52px 0 28px}
    .hero-stage{gap:12px}
    .phone{width:clamp(148px,45vw,236px)}
    .phone.sm{width:clamp(126px,38vw,206px)}
    .videos{padding:44px 20px;border-radius:26px}
    .kpis{gap:20px}
    .cta .btn{flex:1;justify-content:center}
  }

  /* reveal */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
  .reveal.visible{opacity:1;transform:none}

  /* lightbox */
  .lb{position:fixed;inset:0;background:rgba(6,9,20,.9);display:none;align-items:center;justify-content:center;z-index:100;padding:24px;cursor:zoom-out;backdrop-filter:blur(4px)}
  .lb.open{display:flex}
  .lb img{max-width:min(420px,92vw);max-height:92vh;border-radius:28px;box-shadow:0 30px 80px -20px rgba(0,0,0,.7);border:8px solid #0B1020}