:root{
  --bg:#07090d; --bg2:#0a0e14;
  --panel:rgba(19,23,31,.6);
  --border:#1f2733;
  --text:#eef2f7; --muted:#9fb0c2;
  --brand:#4ad1a8; --brand-2:#7ad7ff;
  --ring:0 0 0 4px rgba(122,215,255,.28);
  --shadow:0 30px 80px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.03);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color:var(--text);
  background:
    radial-gradient(1000px 600px at 70% -200px, rgba(122,215,255,.10), transparent 60%),
    radial-gradient(800px 500px at 10% -120px, rgba(74,209,168,.10), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg2) 40%, #07090d);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}

/* Header */
.header{position:sticky;top:0;z-index:60;background:rgba(7,9,13,.6);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:14px}
.brand img{height:56px;width:auto} /* no shadow */
.brand .name{font-size:18px;font-weight:800;letter-spacing:.4px}
.menu{display:flex;gap:18px;flex-wrap:wrap}
.menu a{padding:10px 12px;border-radius:10px}
.menu a.active,.menu a:focus-visible{outline:none;box-shadow:var(--ring)}

/* Hero */
.hero{padding:86px 0 64px;position:relative;background:radial-gradient(1200px 420px at 50% -80px, rgba(122,215,255,.12), transparent 60%)}
.hero-inner{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.hero .title{grid-column:span 7}
.hero .logo-wrap{grid-column:span 5;display:flex;justify-content:center}
.hero .logo-frame{
  width:100%;max-width:420px;aspect-ratio:16/9;border-radius:20px;
  background:linear-gradient(180deg, rgba(122,215,255,.08), rgba(74,209,168,.08));
  border:1px solid var(--border); box-shadow: var(--shadow); display:flex;align-items:center;justify-content:center;
}
.hero .logo-frame img{max-width:78%;height:auto} /* no shadow */
h1{font-size:clamp(34px,4.8vw,58px);margin:0 0 10px;letter-spacing:.3px}
.lead{color:#c8d6e5;max-width:62ch;margin:0 0 22px}
.btn{display:inline-block;padding:13px 18px;border-radius:14px;background:var(--brand);color:#062116;font-weight:900;border:1px solid #193327}
.btn:hover{filter:brightness(1.05)}

/* Sections */
.section{padding:60px 0;border-top:1px solid var(--border)}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.card{grid-column:span 6;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.card h3{margin:0 0 8px;font-size:20px}
.card p{color:var(--muted)}
.notice{padding:14px 16px;border:1px dashed #2a3340;border-radius:14px;background:#0e141a;color:#cfe6f7;margin-top:14px}

/* Logos inside brand cards */
.brand-logo{display:block;max-width:180px;width:100%;height:auto;margin:4px 0 10px}

/* Forms */
input,textarea{width:100%;padding:12px 14px;border-radius:12px;border:1px solid #25303a;background:#0d1218;color:var(--text)}
input:focus,textarea:focus{outline:none;box-shadow:var(--ring)}

/* Footer */
.footer{padding:34px 0;color:#a8b0ba;border-top:1px solid var(--border);background:#090c11}
.footer small{display:block;opacity:.9}

/* === Mobile polish (<= 820px) === */
@media (max-width: 820px){
  .container{padding:0 16px}
  .nav{padding:10px 0}
  .brand img{height:44px}
  .menu{gap:10px}
  .menu a{padding:10px 12px;border-radius:10px}
  .hero{padding:48px 0 28px}
  .hero-inner{display:block}
  .hero .title{margin-bottom:18px}
  .hero .logo-wrap{display:flex;justify-content:center;margin-top:6px}
  .hero .logo-frame{max-width:320px;aspect-ratio:auto;padding:12px}
  h1{font-size:clamp(26px, 6vw, 36px)}
  .lead{font-size:16px}
  .btn{display:inline-block;padding:14px 18px;border-radius:14px}
  .grid{display:grid;grid-template-columns:1fr;gap:16px}
  .card{grid-column:1 / -1;padding:18px;border-radius:16px}
  .footer{padding:26px 0}
}
@media (max-width: 380px){
  .brand .name{display:none}
  .hero .logo-frame{max-width:260px}
  .menu a{padding:8px 10px}
}
img{max-width:100%;height:auto}