:root {
  --bg: #070b14;
  --bg2: #0d1322;
  --card: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.09);
  --text: #e6eaf2;
  --muted: #8b94a7;
  --accent1: #6366f1;
  --accent2: #22d3ee;
  --grad: linear-gradient(135deg, var(--accent1), var(--accent2));
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: ui-sans-serif, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(99, 102, 241, 0.18), transparent),
    radial-gradient(700px 400px at -10% 110%, rgba(34, 211, 238, 0.12), transparent),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.wrap { max-width: 920px; margin: 0 auto; padding: 48px 20px 64px; }

a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

.badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--muted);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 14px; background: var(--card);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #34d399; box-shadow: 0 0 10px #34d399; }

h1 {
  font-size: clamp(30px, 5vw, 44px); line-height: 1.15;
  letter-spacing: -0.02em; margin: 18px 0 10px;
}
.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.sub { color: var(--muted); font-size: 17px; max-width: 60ch; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin-top: 32px; }

.card {
  display: block; padding: 22px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; color: var(--text);
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.card:hover {
  transform: translateY(-3px); text-decoration: none;
  border-color: rgba(99, 102, 241, 0.55);
  background: rgba(99, 102, 241, 0.07);
}
.card .ico { font-size: 26px; }
.card h3 { margin: 10px 0 4px; font-size: 17px; }
.card p { color: var(--muted); font-size: 14px; }
.tag {
  display: inline-block; margin-top: 12px; font-size: 11.5px;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent2);
}

.panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 24px; margin-top: 28px;
}

label { display: block; font-size: 13.5px; color: var(--muted); margin: 14px 0 6px; }
input, select, textarea {
  width: 100%; padding: 11px 13px; font-size: 15px;
  color: var(--text); background: var(--bg2);
  border: 1px solid var(--border); border-radius: 10px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent1); }
textarea { resize: vertical; min-height: 140px; font-family: ui-monospace, Consolas, monospace; }

button, .btn {
  display: inline-block; margin-top: 18px; padding: 12px 26px;
  font-size: 15px; font-weight: 600; color: #fff; cursor: pointer;
  background: var(--grad); border: none; border-radius: 10px;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
button:hover, .btn:hover { opacity: 0.88; transform: translateY(-1px); }

.result {
  margin-top: 20px; padding: 18px 20px;
  background: var(--bg2); border: 1px solid var(--border); border-radius: 12px;
  font-size: 17px; font-weight: 600;
}
.result small { display: block; font-weight: 400; color: var(--muted); margin-top: 4px; }

table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 14.5px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.05em; }
td.num { font-variant-numeric: tabular-nums; }

footer {
  margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border);
  color: var(--muted); font-size: 13.5px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}