:root{
    --sky:#38b6ff;--sky-deep:#0e7bc4;--ink:#0e2a3d;--ink-soft:#46627a;--paper:#ffffff;
    --mist:#eef7fe;--mist-2:#e2f1fd;--line:#d7e9f7;--wa:#25d366;--wa-deep:#128c4f;--li:#0a66c2;
    --shadow: 0 24px 60px -28px rgba(14,42,61,.28);--shadow-sm: 0 10px 30px -18px rgba(14,42,61,.30);
    --radius:22px;--maxw:1140px;--display:"Outfit", system-ui, sans-serif;--body:"DM Sans", system-ui, sans-serif;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:90px}
  body{margin:0;font-family:var(--body);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;line-height:1.6;overflow-x:hidden}
  h1,h2,h3,h4{font-family:var(--display);font-weight:400;line-height:1.1;margin:0;letter-spacing:-.01em}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
  .eyebrow{font-family:var(--body);font-weight:500;font-size:.74rem;text-transform:uppercase;letter-spacing:.18em;color:var(--sky-deep);display:inline-flex;align-items:center;gap:.55em}
  .eyebrow::before{content:"";width:26px;height:2px;background:var(--sky);border-radius:2px}

  .btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--body);font-weight:500;font-size:1rem;border-radius:100px;padding:.8em 1.4em;cursor:pointer;border:1.5px solid transparent;transition:transform .18s ease, box-shadow .25s ease, background .2s ease, color .2s ease;white-space:nowrap}
  .btn-primary{background:var(--sky);color:#fff;box-shadow:0 12px 26px -12px rgba(56,182,255,.75)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -12px rgba(56,182,255,.85);background:var(--sky-deep)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{transform:translateY(-2px);border-color:var(--sky);color:var(--sky-deep)}
  .btn:focus-visible{outline:3px solid var(--sky-deep);outline-offset:3px}

  header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .3s, box-shadow .3s}
  header.scrolled{border-color:var(--line);box-shadow:0 6px 24px -20px rgba(14,42,61,.5)}
  .nav{display:flex;align-items:center;gap:28px;height:74px}
  .nav .logo{height:30px;width:auto;display:block}
  .nav-links{display:flex;gap:26px;margin-left:14px}
  .nav-links a{font-weight:400;color:var(--ink-soft);font-size:.98rem;position:relative;padding:4px 0}
  .nav-links a:hover{color:var(--ink)}
  .nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--sky);border-radius:2px;transition:width .22s ease}
  .nav-links a:hover::after{width:100%}
  .nav-right{margin-left:auto;display:flex;align-items:center;gap:18px}
  .menu-btn{display:none;background:none;border:none;cursor:pointer;padding:8px;color:var(--ink)}

  /* hero */
  .dp-hero{position:relative;padding:64px 0 34px;overflow:hidden}
  .dp-hero::before{content:"";position:absolute;inset:0;z-index:-2;background:radial-gradient(1100px 540px at 78% -8%, rgba(56,182,255,.16), transparent 60%),radial-gradient(720px 500px at 8% 110%, rgba(56,182,255,.10), transparent 55%)}
  .dp-hero .inner{max-width:46rem}
  .dp-hero h1{font-size:clamp(2rem,4.8vw,3.1rem);margin:20px 0 0}
  .dp-hero h1 .accent{color:var(--sky-deep)}
  .dp-hero p{font-size:1.18rem;color:var(--ink-soft);max-width:40em;margin:22px 0 0}

  /* disclaimer */
  .disclaimer{border:1px dashed var(--line);background:var(--mist);border-radius:16px;padding:18px 22px;margin:30px 0 0;max-width:60em;display:flex;gap:14px;align-items:flex-start}
  .disclaimer svg{width:20px;height:20px;color:var(--sky-deep);flex-shrink:0;margin-top:2px}
  .disclaimer p{font-size:.92rem;color:var(--ink-soft);line-height:1.6}

  /* demo badge list */
  .demo-badges{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:38px}
  .demo-badge{display:flex;align-items:center;gap:13px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:15px 16px;box-shadow:var(--shadow-sm);transition:transform .2s ease, box-shadow .25s ease, border-color .2s}
  .demo-badge:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bfe0f8}
  .demo-badge .db-ic{width:48px;height:48px;border-radius:12px;background:var(--mist);display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden;color:var(--ink);font-family:var(--display);font-weight:700;font-size:.82rem;letter-spacing:.02em}
  .demo-badge .db-ic img{max-width:38px;max-height:30px;width:auto;height:auto;display:block}
  .demo-badge .db-ic svg{max-width:38px;max-height:18px;width:auto;height:auto;display:block}
  .demo-badge .db-nm{font-family:var(--display);font-weight:500;font-size:.98rem;line-height:1.2}
  .demo-badge .db-go{font-size:.78rem;color:var(--sky-deep);margin-top:2px}

  /* demo cards */
  .demos{padding:26px 0 70px}
  .demo-card{position:relative;background:#0e2a3d;border:1px solid var(--line);border-radius:26px;overflow:hidden;box-shadow:var(--shadow-sm);margin-top:34px;scroll-margin-top:100px}
  .dc-info{position:absolute;top:0;left:0;bottom:0;z-index:2;width:min(440px,58%);padding:46px 42px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;pointer-events:none}
  .dc-info > *{pointer-events:auto}
  .dc-logo{height:36px;margin-bottom:20px;display:flex;align-items:center;color:var(--ink)}
  .dc-logo img{max-height:36px;max-width:190px;width:auto;display:block}
  .dc-logo svg{height:24px;width:auto;display:block;color:var(--ink)}
  .dc-logo .txt{font-family:var(--display);font-weight:600;font-size:1.35rem;letter-spacing:.01em}
  .dc-ind{font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;color:var(--sky-deep);font-weight:500}
  .dc-info h2{font-size:1.66rem;margin:8px 0 0}
  .dc-desc{color:var(--ink-soft);font-size:1.02rem;line-height:1.65;margin-top:14px}
  .dc-period{display:inline-flex;align-items:center;gap:.5em;font-size:.86rem;color:var(--ink-soft);background:var(--mist-2);border-radius:100px;padding:6px 14px;margin-top:20px}
  .dc-period svg{width:15px;height:15px;color:var(--sky-deep)}
  .dc-info .btn{margin-top:24px}

  /* right stage = full demo page (screenshot + real HeroChat widget) in an iframe */
  .dc-stage{position:relative;width:100%;height:730px;background:#0e2a3d;overflow:hidden}
  .dc-stage .ds-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:500;font-size:.88rem;color:rgba(255,255,255,.55);text-align:center;padding:0 24px}
  .dc-stage iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block;z-index:1}

  footer{background:var(--ink);color:#c9d8e4;padding:56px 0 30px;margin-top:20px}
  .foot-in{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px}
  .foot-in .logo{height:26px;filter:brightness(0) invert(1);opacity:.95}
  .foot-links{display:flex;gap:22px;flex-wrap:wrap;font-size:.92rem;color:#90a8ba}
  .foot-links a:hover{color:#fff}
  .foot-bottom{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem;color:#7e98ab}

  .reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease, transform .6s cubic-bezier(.2,.8,.3,1)}
  .reveal.in{opacity:1;transform:none}

  @media(max-width:980px){.demo-badges{grid-template-columns:1fr 1fr}}
  @media(max-width:860px){
    .demo-card{background:#fff}
    .dc-info{position:static;width:auto;background:none;padding:32px 24px 22px;justify-content:flex-start}
    .dc-stage{height:730px}
  }
  @media(max-width:760px){.nav-links{display:none}.menu-btn{display:block}.demo-badges{grid-template-columns:1fr}.foot-in{flex-direction:column;align-items:flex-start}}
  @media(prefers-reduced-motion:reduce){*{animation:none!important}.reveal{opacity:1!important;transform:none!important;transition:none!important}html{scroll-behavior:auto}}
.lang-switch{display:inline-flex;align-items:center;border:1px solid #d7e9f7;border-radius:100px;overflow:hidden;font-size:.82rem;font-weight:500;font-family:"DM Sans",system-ui,sans-serif}.lang-switch a{padding:.42em .8em;color:#46627a;text-decoration:none}.lang-switch a.on{background:#38b6ff;color:#fff}.lang-switch a:not(.on):hover{background:#eef7fe;color:#0e7bc4}@media(min-width:761px){.nav-right .btn-primary{min-width:12rem;justify-content:center}}footer .foot-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}@media(max-width:900px){footer .foot-grid{grid-template-columns:1fr 1fr}}@media(max-width:760px){footer .foot-grid{grid-template-columns:1fr}}/*hdr-sync*/header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}header.scrolled{border-color:#d7e9f7;box-shadow:0 6px 24px -20px rgba(14,42,61,.5)}.nav{display:flex;align-items:center;gap:28px;height:74px}.nav .logo{height:30px;width:auto;display:block}.nav-links{display:flex;gap:26px;margin-left:14px}.nav-links a{font-weight:400;color:#46627a;font-size:.98rem;position:relative;padding:4px 0}.nav-links a:hover{color:#0e2a3d}.nav-right{margin-left:auto;display:flex;align-items:center;gap:18px}.nav-phone{font-weight:500;color:#0e2a3d;font-size:.98rem;display:flex;align-items:center;gap:.5em}.nav-phone svg{width:17px;height:17px;color:#0e7bc4}.menu-btn{display:none;background:none;border:none;cursor:pointer;padding:8px;color:#0e2a3d}@media(max-width:760px){.nav-links,.nav-phone{display:none}.menu-btn{display:block}}@media(max-width:760px){.lang-switch{display:none}}