:root {
  --bg: #0f172a;
  --surface: #111827;
  --surface-2: #1f2937;
  --border: #334155;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #2563eb;
  --primary-2: #4f46e5;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #0b1120 0%, var(--bg) 100%);
  color: var(--text);
  font-family: "Noto Sans SC", Arial, sans-serif;
}

.page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.hero {
  padding: 12px 0 24px;
}

.eyebrow {
  color: #60a5fa;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero h1 {
  margin: 8px 0 12px;
  font-size: 34px;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.panel {
  border: 1px solid var(--border);
  background: rgba(17, 24, 39, 0.96);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 18px 40px rgba(2, 6, 23, 0.25);
}

.panel-head h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.panel-head p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
}

.label {
  display: block;
  margin: 14px 0 8px;
  color: var(--muted);
  font-size: 13px;
}

.input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--text);
  padding: 13px 14px;
  font-size: 14px;
  outline: none;
}

.textarea {
  min-height: 220px;
  resize: vertical;
  font-family: Consolas, monospace;
  line-height: 1.7;
}

.check {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  color: var(--text);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 14px;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.result {
  margin: 18px 0 0;
  min-height: 260px;
  border-radius: 12px;
  background: #020617;
  border: 1px solid #1e293b;
  color: #cbd5e1;
  padding: 14px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 13px;
  line-height: 1.7;
  font-family: Consolas, monospace;
}

@media (max-width: 920px) {
  .grid {
    grid-template-columns: 1fr;
  }
}