/* Lingua AI Ultra — identité premium bleu nuit et or */
:root{--bg:#030912;--panel:#081523;--panel2:#0d2033;--gold:#e6bd5f;--cyan:#e6bd5f;--muted:#b9c3d0;--line:rgba(230,189,95,.19)}
body{background:radial-gradient(circle at 70% 8%,rgba(18,69,111,.27),transparent 38%),linear-gradient(180deg,#02070d,#071523 55%,#02070d);color:#fff}
.topbar{background:rgba(3,9,18,.92);border-bottom:1px solid rgba(230,189,95,.18)}
.brand-mark{filter:drop-shadow(0 5px 14px rgba(230,189,95,.2))}
.brand strong,.eyebrow,.hero h1 em{color:var(--gold)}
.nav{background:rgba(3,9,18,.94);border-bottom-color:rgba(230,189,95,.12)}
.nav button:hover,.nav button.active{color:#fff;border-color:var(--gold)}
.hero{grid-template-columns:minmax(0,1.1fr) minmax(300px,.78fr);align-items:center;overflow:hidden}
.hero h1{max-width:780px;letter-spacing:-.045em}
.hero p{color:#c4ceda}
.lingua-device{min-height:580px;display:grid;place-items:center;position:relative}
.lingua-device:before{content:"";position:absolute;width:430px;height:430px;border-radius:50%;background:radial-gradient(circle,rgba(24,101,157,.35),transparent 70%);filter:blur(10px)}
.device-frame{width:min(330px,84vw);aspect-ratio:.55;border:2px solid #647180;border-radius:52px;padding:12px;background:linear-gradient(145deg,#263240,#06090d 22%,#1a232d 70%,#030507);box-shadow:0 45px 90px rgba(0,0,0,.58),0 0 0 1px rgba(255,255,255,.13);transform:rotate(2deg);position:relative;z-index:1}
.device-screen{height:100%;border-radius:40px;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px;background:radial-gradient(circle at 50% 72%,rgba(23,98,153,.42),transparent 34%),linear-gradient(180deg,#06111d,#03101b 65%,#071c2c)}
.device-screen img{width:170px;height:170px;filter:drop-shadow(0 8px 20px rgba(230,189,95,.18))}
.device-screen b{font-size:34px;line-height:1.02;margin-top:14px}
.device-screen b span{color:var(--gold)}
.device-screen small{margin-top:14px;color:#d2b66f;letter-spacing:.18em;font-weight:800}
.device-globe{width:280px;height:140px;margin-top:34px;border-radius:50% 50% 0 0;background:radial-gradient(ellipse at center,#1f77ac 0,#0d3657 38%,#06111d 72%);box-shadow:0 -8px 35px rgba(61,167,226,.35);opacity:.9}
.card,.feature-action,.scenario,.family-stats>div,.profile{background:linear-gradient(145deg,rgba(13,32,51,.96),rgba(5,16,28,.96));border-color:rgba(230,189,95,.15)}
.primary,.gold{background:linear-gradient(135deg,#f3d27b,#bf8425);color:#08101a}
.secondary{border-color:rgba(230,189,95,.45)}
a{color:#f0cb6d}
@media(max-width:980px){.hero{grid-template-columns:1fr}.lingua-device{min-height:520px}}
@media(max-width:640px){.lingua-device{min-height:480px}.device-frame{width:min(280px,80vw);border-radius:44px}.device-screen{border-radius:34px}.device-screen img{width:135px;height:135px}.device-screen b{font-size:28px}}