:root { --bg:#0b1220; --card:#111a2e; --text:#e8eefc; --muted:#a9b5d3; --accent:#4ea1ff; --ok:#2dd4bf; --err:#fb7185; }
*{box-sizing:border-box} body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;background:linear-gradient(180deg,var(--bg),#070b14);color:var(--text)}
.container{max-width:1100px;margin:0 auto;padding:24px}
.top{border-bottom:1px solid rgba(255,255,255,.08)}
.brand{display:flex;gap:16px;align-items:center}
.logo{width:56px;height:56px;object-fit:contain}
.subtitle{margin:6px 0 0;color:var(--muted)}
.badge{margin-left:auto;background:rgba(78,161,255,.18);border:1px solid rgba(78,161,255,.35);padding:10px 14px;border-radius:999px;color:var(--text);font-weight:600}
.grid{display:grid;grid-template-columns:1.3fr .9fr;gap:18px}
@media (max-width: 900px){.grid{grid-template-columns:1fr}.badge{display:none}}
.card{background:rgba(17,26,46,.86);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:18px;box-shadow:0 12px 30px rgba(0,0,0,.35)}
h1,h2{margin:0 0 10px} h2{margin-top:14px}
.video{position:relative;padding-top:56.25%;border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
.video iframe{position:absolute;inset:0;width:100%;height:100%}
.features{margin:10px 0 0;padding-left:18px;color:var(--text)}
.note{margin-top:12px;color:var(--muted)}
.form{display:flex;flex-direction:column;gap:12px;margin-top:10px}
label{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:14px}
input{padding:12px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.18);color:var(--text);outline:none}
input:focus{border-color:rgba(78,161,255,.65)}
.check{flex-direction:row;align-items:center;gap:10px}
button,.btn{display:inline-block;text-align:center;padding:12px 14px;border-radius:12px;border:1px solid rgba(78,161,255,.45);background:rgba(78,161,255,.18);color:var(--text);font-weight:700;cursor:pointer;text-decoration:none}
button:hover,.btn:hover{background:rgba(78,161,255,.28)}
.alert{padding:12px;border-radius:12px;margin:10px 0;border:1px solid rgba(255,255,255,.12)}
.alert.success{background:rgba(45,212,191,.12);border-color:rgba(45,212,191,.35)}
.alert.error{background:rgba(251,113,133,.12);border-color:rgba(251,113,133,.35)}
.small{color:var(--muted);font-size:12px}
.footer{border-top:1px solid rgba(255,255,255,.08);margin-top:24px}