:root {
  --bg: #eef4f0;
  --panel: #ffffff;
  --line: #c6d5cc;
  --ink: #18201b;
  --muted: #58645d;
  --accent: #0f766e;
  --danger: #b42318;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "IBM Plex Sans", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f9fcfa 0%, var(--bg) 100%);
}
.header, .container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}
.header {
  padding: 28px 0 16px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
}
.nav { display: flex; gap: 12px; flex-wrap: wrap; }
a { color: var(--accent); text-decoration: none; }
.container { padding-bottom: 40px; }
.grid { display: grid; gap: 16px; margin-bottom: 16px; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 12px 30px rgba(15, 118, 110, 0.08);
}
.narrow { max-width: 460px; margin: 40px auto; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 600;
}
.button.secondary { background: #dbe8e2; color: var(--ink); }
input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: white;
}
.list { list-style: none; padding: 0; margin: 0; }
.muted { color: var(--muted); }
.error { color: var(--danger); font-weight: 600; }
@media (max-width: 720px) {
  .header { align-items: start; flex-direction: column; }
}