:root {
  --bg: #f2f7fb;
  --ink: #13253a;
  --muted: #4f6d84;
  --surface: #ffffff;
  --line: #d8e4ef;
  --accent: #0f766e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #d7efff 0, var(--bg) 45%);
}

.hero {
  padding: 2rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(120deg, #edf8f7 0%, #e8f1ff 80%);
}

h1,
h2 {
  margin-top: 0;
}

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1rem;
  cursor: pointer;
}

main.grid {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.form-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.5rem;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
}

li {
  margin-bottom: 0.5rem;
}