:root {
  color-scheme: light;
  --bg: #f7f6f3;
  --text: #1c1b19;
  --muted: #5c5954;
  --line: #e2dfd8;
  --card: #fffcf8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.brand {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 700;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
  line-height: 1.35;
}

h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.1rem;
}

p { margin: 0 0 1rem; }

.lead, .note, .footer { color: var(--muted); }

a { color: inherit; }

.app {
  display: block;
  margin: 0 0 0.75rem;
  padding: 1rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
}

.app strong { display: block; }

.app span { color: var(--muted); }

.note a, .footer a {
  color: #0b57d0;
}

form {
  display: grid;
  gap: 0.9rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
}

input, select, textarea, button {
  font: inherit;
  font-size: 1rem;
}

input, select, textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
}

textarea { min-height: 8rem; resize: vertical; }

button {
  min-height: 44px;
  padding: 0.75rem 1rem;
  color: #f7f6f3;
  background: var(--text);
  border: 0;
  border-radius: 10px;
}

.footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}