:root {
  --bg: #0b0e14;
  --panel: #131825;
  --panel-2: #1a2030;
  --line: #232b3d;
  --text: #e6ebf2;
  --muted: #8b97ad;
  --accent: #3ddc97;
  --accent-2: #4aa3ff;
  --danger: #ff6b6b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 70% -10%, #16203a 0%, var(--bg) 55%);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Arial, sans-serif;
}
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }
.hero { padding: 56px 0 28px; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; letter-spacing: .3px; color: var(--accent); margin-bottom: 18px; }
.brand span { color: var(--text); }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 12px; }
.lead { color: var(--muted); max-width: 640px; font-size: 17px; }
h2 { font-size: 20px; margin: 36px 0 14px; }

.grid { list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid li { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; font-size: 14px; color: var(--muted); }
.grid li b { color: var(--text); }
code { background: #0e1422; border: 1px solid var(--line); padding: 1px 5px; border-radius: 5px; font-size: 13px; }

.form-card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin: 30px 0 40px; }
form label { display: block; margin: 0 0 16px; font-size: 14px; color: var(--muted); }
form label.check { display: flex; gap: 10px; align-items: flex-start; color: var(--text); font-size: 14px; }
input[type=url], input[type=text], textarea {
  width: 100%; margin-top: 6px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 9px;
  color: var(--text); padding: 11px 12px; font: inherit; font-size: 15px;
}
textarea { resize: vertical; }
input:focus, textarea:focus { outline: none; border-color: var(--accent-2); }
.req { color: var(--danger); }
.opt { color: var(--muted); font-weight: 400; }
.hint { display: block; margin-top: 6px; color: var(--muted); font-size: 12.5px; }
.check input { margin-top: 3px; width: 18px; height: 18px; flex: 0 0 auto; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

button { background: var(--accent); color: #07120c; border: 0; border-radius: 10px;
  padding: 12px 20px; font-size: 15px; font-weight: 700; cursor: pointer; }
button:hover { filter: brightness(1.06); }
button:disabled { opacity: .55; cursor: default; }

.msg { margin-top: 14px; font-size: 14px; min-height: 20px; }
.msg.ok { color: var(--accent); }
.msg.err { color: var(--danger); white-space: pre-line; }

footer { color: var(--muted); font-size: 13px; padding: 24px 0 50px; border-top: 1px solid var(--line); margin-top: 10px; }
.topnav { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 22px; }
.admin-btn {
  display: inline-block; padding: 9px 18px; border-radius: 9px;
  background: var(--panel-2); color: var(--text); border: 1px solid var(--line);
  text-decoration: none; font-size: 14px; font-weight: 600; white-space: nowrap;
  transition: background .15s, border-color .15s;
}
.admin-btn:hover { background: var(--panel); border-color: var(--accent); }

@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } h1 { font-size: 25px; } }