:root{
  --bg:#0B101D; --bg2:#000; --accent:#1DE1D6; --text:#E7F7F6;
  --panel:#121826; --muted:#8AA3A9;
  --radius:14px; --max:1100px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:linear-gradient(135deg,var(--bg) 0%,#0e1526 55%,var(--bg2) 100%);color:var(--text);font-family:Rubik,Arial,Helvetica,sans-serif}
.header{max-width:var(--max);margin:0 auto;padding:14px 18px;display:flex;gap:16px;align-items:center;justify-content:space-between}
.logo{font-weight:800;letter-spacing:1px;font-size:24px;color:var(--accent);display:flex;align-items:center;gap:10px}
.logo-text{color:var(--text);font-weight:700;font-size:18px;letter-spacing:.2px;opacity:.8}
.logo img{height:52px;display:block}
.nav a{color:var(--text);opacity:.9;text-decoration:none;margin-left:16px}
.nav a:hover{opacity:1;color:var(--accent)}
.nav a{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px}
.nav a svg{width:18px;height:18px;fill:currentColor;opacity:.85}
.nav a:hover{background:rgba(29,225,214,.1)}
.hero{max-width:var(--max);margin:10px auto;padding:20px 18px;display:grid;grid-template-columns:1.3fr 1fr;gap:18px;align-items:center}
.hero__content h1{margin:0 0 8px 0;font-size:44px;letter-spacing:1px}
.hero__content p{margin:0 0 16px 0;color:var(--muted)}
.hero__content .kicker{margin:0 0 6px 0;color:#9fe;opacity:.9;letter-spacing:.08em;text-transform:uppercase;font-size:14px}
.cta{display:inline-block;background:var(--accent);color:#012222;padding:12px 18px;border-radius:999px;text-decoration:none;font-weight:700}
.hero__art .art-box{background:#0e1a2a;border:1px solid #223246;color:#7aa6a1;height:320px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center}

/* Hero Art Stage */
.art-stage{position:relative;height:360px;border-radius:var(--radius);background:radial-gradient(60% 60% at 30% 40%,rgba(29,225,214,.12),transparent 60%),linear-gradient(180deg,#0e1a2a 0%,rgba(10,14,26,0) 100%);border:1px solid #223246;overflow:hidden}
.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:40% 50%;z-index:0;border-radius:inherit}
.brand-mark{position:absolute;left:14px;bottom:14px;width:64px;height:auto;z-index:1;opacity:.98;filter:drop-shadow(0 0 14px rgba(29,225,214,.35));pointer-events:none;mix-blend-mode:screen}
.aurora-art{display:none}
.sphere-wrap{position:absolute;right:22px;bottom:28px;width:180px;height:180px;display:grid;place-items:center;z-index:2}
.sphere{width:100%;height:100%;opacity:.85;filter:drop-shadow(0 4px 26px rgba(29,225,214,.25))}
.dot{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(0deg) translateX(70px) rotate(0deg);width:10px;height:10px;background:var(--accent);border-radius:50%;box-shadow:0 0 14px var(--accent),0 0 28px var(--accent);animation:orbit 8s linear infinite;transform-origin:center}

@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes orbit{from{transform:rotate(0deg) translateX(70px) rotate(0deg)}to{transform:rotate(360deg) translateX(70px) rotate(-360deg)}}
.features{max-width:var(--max);margin:24px auto;padding:0 18px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.feature .feat-icon{width:36px;height:36px;opacity:.95;display:block;margin:0 auto 8px auto}
.feature{ text-align:center }
.form-section{max-width:var(--max);margin:24px auto;padding:0 18px}
.contact-form{background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.0)),var(--panel);border:1px solid #1e2a3f;border-radius:var(--radius);padding:18px;box-shadow:0 10px 30px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.04)}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:10px}
.grid label{display:flex;flex-direction:column;gap:6px}
@media(max-width:820px){.grid{grid-template-columns:1fr}}
input:not([type="checkbox"]):not([type="radio"]),textarea{background:#0F1626;border:1px solid #2a415e;color:var(--text);border-radius:8px;padding:10px;font-size:14px;width:100%}
input::placeholder,textarea::placeholder{color:#8AA3A9}
.usecases{margin:6px 0 12px 0;border:1px dashed #29435b;padding:8px;border-radius:10px}
.usecases legend{color:#9cc;margin-bottom:6px}
.usecases{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px;align-items:start}
.usecases label{display:grid;grid-template-columns:20px auto;align-items:flex-start;gap:10px;padding:2px 4px;cursor:pointer;white-space:normal;line-height:1.3}
.usecases input[type="checkbox"]{margin:0;width:18px;height:18px;accent-color:#1DE1D6}
.full{display:block;margin:6px 0}
.form-actions{display:flex;justify-content:flex-start;padding-top:6px}
.submit{background:var(--accent);color:#012222;border:none;border-radius:10px;padding:12px 16px;font-weight:700;cursor:pointer}
.submit:hover{filter:brightness(1.1)}
.submit:active{transform:translateY(1px)}
.privacy{opacity:.7;font-size:12px;margin:8px 0 0}
.footer{max-width:var(--max);margin:18px auto;padding:12px 18px;color:#9bb}

/* убираем hover‑скачки размеров, оставляем только лёгкую анимацию */
.art-stage{transition:none}
.aurora-art{transition:none}
.sphere-wrap{transition:none}
.sphere{transition:none}
.dot{transition:none}

/* Inputs focus */
input:not([type="checkbox"]):not([type="radio"]):focus, textarea:focus { outline: 2px solid rgba(29,225,214,.35); border-color: rgba(29,225,214,.6); box-shadow: 0 0 0 3px rgba(29,225,214,.08); }
textarea{ min-height: 120px; }

/* Mobile */
@media(max-width:900px){
  .hero{grid-template-columns:1fr}
  .art-stage{height:360px}
  .hero-photo{object-position:50% 86%}
  .aurora-art{max-width:78%;bottom:6px}
  .sphere-wrap{right:10px;bottom:18px;width:140px;height:140px}
  .features{grid-template-columns:1fr}
  .brand-mark{width:52px;left:10px;bottom:10px}
  .logo img{height:36px}
  .logo-text{display:none}
}
@media(max-width:520px){
  .hero__content h1{font-size:34px}
  .cta{padding:10px 14px}
}
@media(max-width:420px){
  .hero-photo{object-position:50% 90%}
  .form-actions{justify-content:center}
  .submit{min-width:180px}
}

@media(max-width:700px){
  .usecases{grid-template-columns:1fr}
}

/* Карточки «Можливості» */
.features{gap:16px}
.feature{background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0));border:1px solid rgba(34,50,70,.9);border-radius:16px;padding:18px;box-shadow:0 8px 24px rgba(0,0,0,.18);position:relative}
.feature:hover{box-shadow:0 12px 32px rgba(0,0,0,.26)}
.feature h3{margin:6px 0 6px 0}
.feature p{margin:0;color:#9bb}