:root{
    --bg:#0B0B12; --bg2:#17171F; --card:#17171F; --line:#2A2A34;
    --text:#F1EFEA; --muted:#A3A2AE; --accent:#B7A8F5; --accent2:#4FD8FF;
    --sleep:#B7A8F5; --anx:#4FD8FF; --focus:#9577FF;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    background:radial-gradient(1200px 800px at 50% -10%, #141a3a 0%, var(--bg) 55%) no-repeat, var(--bg);
    color:var(--text);
    font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:1080px;margin:0 auto;padding:0 20px}
  a{color:inherit;text-decoration:none}
  .muted{color:var(--muted)}

  /* nav */
  nav{display:flex;align-items:center;justify-content:space-between;padding:20px 0}
  .logo{font-weight:700;font-size:18px;letter-spacing:.3px;display:flex;align-items:center;gap:8px}
  .logo .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 0 14px var(--accent)}
  nav .links{display:flex;gap:22px;font-size:14px}
  nav .links a{color:var(--muted)}
  nav .links a:hover{color:var(--text)}
  @media(max-width:640px){nav .links{display:none}}

  /* hero */
  .hero{text-align:center;padding:48px 0 24px}
  .hero h1{font-size:clamp(30px,6vw,54px);line-height:1.08;font-weight:800;letter-spacing:-.5px}
  .hero h1 .grad{background:linear-gradient(120deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero p.sub{font-size:clamp(16px,2.4vw,20px);color:var(--muted);max-width:620px;margin:18px auto 0}

  /* store badges */
  .badges{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:28px 0 6px}
  .badge{display:flex;align-items:center;gap:11px;background:#000;border:1px solid #2a2f55;
    border-radius:14px;padding:11px 18px;min-width:190px;transition:transform .15s ease,border-color .15s}
  .badge:hover{transform:translateY(-2px);border-color:var(--accent)}
  .badge svg{width:26px;height:26px;flex:none}
  .badge .b-sm{font-size:11px;color:#c9cdf0;line-height:1}
  .badge .b-lg{font-size:17px;font-weight:600;line-height:1.2}
  .trust{font-size:13px;color:var(--muted);margin-top:10px}

  /* video */
  .video-frame{margin:34px auto 0;max-width:760px;border-radius:18px;overflow:hidden;
    border:1px solid var(--line);box-shadow:0 30px 80px rgba(0,0,0,.5);aspect-ratio:16/9}
  .video-frame iframe{width:100%;height:100%;border:0;display:block}

  /* sections */
  section{padding:54px 0}
  h2{font-size:clamp(24px,4vw,34px);font-weight:800;text-align:center;letter-spacing:-.3px}
  h2 + .lead{text-align:center;color:var(--muted);max-width:600px;margin:12px auto 0}

  .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:38px}
  @media(max-width:780px){.cards{grid-template-columns:1fr}}
  .card{background:linear-gradient(180deg,var(--card),#0e1330);border:1px solid var(--line);
    border-radius:18px;padding:26px}
  .card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:24px;margin-bottom:14px}
  .card h3{font-size:19px;margin-bottom:6px}
  .card p{color:var(--muted);font-size:14.5px}
  .card.sleep .ic{background:rgba(124,156,255,.14)}
  .card.anx .ic{background:rgba(90,209,197,.14)}
  .card.focus .ic{background:rgba(199,155,255,.14)}

  /* how it works */
  .how{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:38px;text-align:center}
  @media(max-width:780px){.how{grid-template-columns:1fr}}
  .how .n{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:1px}
  .how h4{font-size:17px;margin:8px 0 6px}
  .how p{color:var(--muted);font-size:14px}

  .diff{margin-top:34px;background:linear-gradient(180deg,#101539,#0c1130);border:1px solid var(--line);
    border-radius:18px;padding:26px 28px;display:flex;gap:16px;align-items:flex-start;max-width:760px;margin-left:auto;margin-right:auto}
  .diff .star{font-size:24px}
  .diff b{color:var(--text)}

  /* email */
  .cta-band{background:linear-gradient(135deg,#16204e,#101533);border:1px solid var(--line);
    border-radius:22px;padding:40px 28px;text-align:center;margin-top:10px}
  form.email{display:flex;gap:10px;max-width:440px;margin:22px auto 0}
  form.email input{flex:1;background:#0a0e22;border:1px solid #2a3160;color:var(--text);
    border-radius:12px;padding:14px 16px;font-size:15px}
  form.email input:focus{outline:none;border-color:var(--accent)}
  form.email button{background:linear-gradient(120deg,var(--accent),var(--accent2));color:#06122b;
    font-weight:700;border:0;border-radius:12px;padding:0 22px;font-size:15px;cursor:pointer}
  @media(max-width:520px){form.email{flex-direction:column}}
  .form-note{font-size:12.5px;color:var(--muted);margin-top:12px}
  #form-ok{display:none;color:var(--accent2);font-weight:600;margin-top:16px}

  /* socials / footer */
  footer{border-top:1px solid var(--line);padding:38px 0;margin-top:30px;text-align:center}
  .footer-links{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:center;margin-bottom:22px;font-size:14px}
  .footer-links a{color:var(--muted);transition:.15s}
  .footer-links a:hover{color:var(--text)}
  .socials{display:flex;gap:18px;justify-content:center;margin-bottom:18px}
  .socials a{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;color:var(--muted);transition:.15s}
  .socials a:hover{color:var(--text);border-color:var(--accent);transform:translateY(-2px)}
  .socials svg{width:20px;height:20px}
  footer .fine{font-size:12.5px;color:#6b73a0;max-width:620px;margin:0 auto;line-height:1.7}
  footer .fine a{color:var(--muted);text-decoration:underline}

  /* sticky mobile CTA */
  .sticky{position:fixed;left:0;right:0;bottom:0;background:rgba(8,10,22,.92);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);padding:12px 16px;display:none;gap:10px;z-index:50}
  .sticky a{flex:1;text-align:center;background:linear-gradient(120deg,var(--accent),var(--accent2));
    color:#06122b;font-weight:700;border-radius:11px;padding:13px;font-size:14px}
  @media(max-width:640px){.sticky{display:flex}body{padding-bottom:70px}}

/* language switcher */
.langsel{background:#0a0e22;border:1px solid #2a3160;color:var(--muted);border-radius:10px;
  padding:7px 10px;font-size:13px;cursor:pointer}
.langsel:focus{outline:none;border-color:var(--accent)}
@media(max-width:640px){nav .links{display:none}.langsel{display:inline-block}}

/* === Wave 0.1: Primary CTA button === */
.cta-btn{
  display:inline-block;
  background:linear-gradient(120deg,var(--accent),var(--accent2));
  color:#06122b;font-weight:800;font-size:clamp(16px,2.2vw,18px);
  border-radius:14px;padding:16px 38px;margin:28px auto 0;
  letter-spacing:.2px;
  transition:transform .15s ease,box-shadow .15s ease;
  box-shadow:0 8px 32px rgba(124,156,255,.30);
}
.cta-btn:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(124,156,255,.45)}

/* hero badges, visually secondary after the CTA button */
.hero .badges{margin-top:18px;opacity:.85}
.hero .badges .badge{min-width:170px}

/* === Wave 0.2: Device-detected badge emphasis === */
/* Default (no JS / desktop): both badges at full opacity */
/* iOS: highlight Apple badge, dim Android */
body.device-ios .badge-android{opacity:.45;filter:grayscale(.3)}
body.device-ios .badge-ios{border-color:var(--accent);box-shadow:0 0 14px rgba(124,156,255,.25)}
/* Android: highlight Google badge, dim Apple */
body.device-android .badge-ios{opacity:.45;filter:grayscale(.3)}
body.device-android .badge-android{border-color:var(--accent2);box-shadow:0 0 14px rgba(90,209,197,.25)}

/* === Wave 0.3: Social-proof row === */
.proof-row{
  display:flex;align-items:center;justify-content:center;
  gap:10px;flex-wrap:wrap;
  margin-top:14px;font-size:13.5px;color:var(--muted);
}
/* New-app honest trust line → routes to the live player */
.proof-try{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(124,156,255,.08);
  color:var(--text);font-size:13.5px;font-weight:500;
  transition:.15s;
}
.proof-try:hover{border-color:var(--accent);background:rgba(124,156,255,.16);transform:translateY(-1px)}

/* === Why-it-works band (differentiator-led trust; no social proof needed) === */
#why{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.why-band{text-align:center;max-width:680px;margin:0 auto;padding:8px 0}
.why-badge{
  display:inline-block;margin-bottom:14px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;
  color:var(--accent);background:rgba(124,156,255,.10);border:1px solid var(--line);
}
.why-band h2{margin:0 0 12px}
.why-band .lead{margin-bottom:24px}

/* === Wave 0.6: Science + FAQ section === */
#science{background:var(--bg)}
.science-lead{
  text-align:center;color:var(--muted);
  max-width:740px;margin:16px auto 0;font-size:15px;line-height:1.7;
}
.science-disclaimer{
  text-align:center;max-width:600px;margin:14px auto 0;font-size:13px;
}
.faq-heading{margin-top:52px}
.faq-list{max-width:720px;margin:28px auto 0;display:flex;flex-direction:column;gap:10px}
.faq-item{
  background:linear-gradient(180deg,var(--card),#0e1330);
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
}
.faq-item summary{
  cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:600;
  list-style:none;display:flex;justify-content:space-between;align-items:center;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:'＋';font-size:18px;color:var(--accent);flex:none;margin-left:12px;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:'－'}
.faq-item p{
  padding:0 22px 18px;color:var(--muted);font-size:14.5px;line-height:1.65;
}
.faq-item summary:hover{color:var(--accent)}

/* RTL */
html[dir="rtl"] body{direction:rtl}
html[dir="rtl"] .how .n{letter-spacing:0}
html[dir="rtl"] .faq-item summary::after{margin-left:0;margin-right:12px}