:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --ink: #101828;
  --muted: #667085;
  --line: #d8dee9;
  --primary: #1445bf;
  --primary-dark: #0f3390;
  --success: #067647;
  --error: #b42318;
  --shadow: 0 18px 55px rgba(16, 24, 40, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--primary);
}

.page {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.shell {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: clamp(24px, 5vw, 52px);
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 34px;
}

.brand {
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(34px, 7vw, 56px);
  line-height: 1.03;
  letter-spacing: 0;
}

h2 {
  margin: 34px 0 8px;
  font-size: 22px;
  line-height: 1.25;
}

p,
li {
  color: var(--muted);
  font-size: 16px;
}

ul {
  padding-left: 22px;
}

.updated {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.notice {
  margin: 24px 0;
  padding: 16px 18px;
  background: #eef4ff;
  border: 1px solid #c7d7fe;
  border-radius: 12px;
  color: #1849a9;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.card {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  text-decoration: none;
}

.card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

label {
  display: block;
  margin: 18px 0 7px;
  color: var(--ink);
  font-weight: 800;
}

select,
textarea,
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 12px 14px;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

button {
  margin-top: 20px;
  border: 0;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 13px 20px;
}

button:hover {
  background: var(--primary-dark);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.status {
  min-height: 26px;
  margin-top: 16px;
  font-weight: 800;
}

.status.success {
  color: var(--success);
}

.status.error {
  color: var(--error);
}

.small {
  font-size: 14px;
}