:root { --bg:#0a0a0b; --surface:#141416; --text:#f4f4f5; --muted:#9d9da6; --accent:#22d3ee; --border:rgba(255,255,255,.08); }
* { margin:0; padding:0; box-sizing:border-box; }
body { background:var(--bg); color:var(--text); font-family:'DM Sans',system-ui,sans-serif; min-height:100svh;
  background-image:radial-gradient(ellipse 80% 50% at 50% -10%, rgba(34,211,238,.12), transparent); }
main { max-width:520px; margin:0 auto; padding:36px 22px 60px; }
a.back { color:var(--muted); text-decoration:none; font-size:14px; }
h1 { font-family:'Space Grotesk',sans-serif; font-size:26px; margin:18px 0 6px; }
.sub { color:var(--muted); font-size:15px; line-height:1.5; margin-bottom:24px; }
label { display:block; font-size:14px; color:var(--muted); margin:14px 0 6px; }
label b { color:var(--accent); }
input, textarea, select { width:100%; background:var(--surface); border:1px solid var(--border); border-radius:12px;
  color:var(--text); font-family:inherit; font-size:16px; padding:13px 14px; }
textarea { min-height:110px; resize:vertical; }
button.send { width:100%; margin-top:22px; padding:16px; border-radius:14px; border:1px solid var(--accent);
  background:rgba(34,211,238,.1); color:var(--accent); font-size:17px; font-weight:700; font-family:inherit; cursor:pointer; }
button.send:disabled { opacity:.5; }
.ok { display:none; text-align:center; padding:40px 10px; }
.ok h2 { font-size:22px; margin:14px 0 8px; }
.hp { position:absolute; left:-9999px; }
.err { color:#ef4444; font-size:14px; margin-top:10px; display:none; }