:root {
  --bg: #f4f0e6;
  --ink: #1c1915;
  --line: #d9d0c1;
  --accent: #8c2f1b;
  --ok: #1f6b45;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.45 Palatino, "Iowan Old Style", "Songti TC", serif;
  background: var(--bg);
  color: var(--ink);
}

header, main {
  max-width: 36rem;
  margin: 0 auto;
  padding: 1rem 1.1rem;
}

header {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.brand { margin: 0; font-weight: 700; }
.who { margin: 0; }

header form { margin: 0; }

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

h1 { font-size: 1.6rem; margin: 0 0 0.8rem; }
h2 { font-size: 1.15rem; margin: 1.4rem 0 0.35rem; }
.card h2 { margin-top: 0; }

label { display: block; margin: 0.85rem 0 0.25rem; font-weight: 700; }

input, button { font: inherit; font-size: 16px; }

input {
  width: 100%;
  min-height: 44px;
  padding: 0.55rem 0.65rem;
  background: #fff;
  border: 1px solid #b7ad9e;
}

button, a.cancel {
  display: inline-block;
  min-height: 44px;
  background: var(--accent);
  color: #fff;
  border: 0;
  padding: 0.65rem 0.9rem;
  text-decoration: none;
  cursor: pointer;
}

a.cancel { background: transparent; color: var(--accent); border: 1px solid var(--accent); }

button.quiet {
  min-height: 44px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 0.45rem 0.75rem;
}

.banner {
  padding: 0.7rem 0.8rem;
  background: #fff;
  border: 1px solid var(--line);
}

.banner.error { border-color: var(--accent); }
.banner.ok { border-color: var(--ok); }

.hint { color: #4e463c; }
.foot { margin-top: 2rem; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 0.9rem 1rem;
  margin: 0 0 0.85rem;
}

.card p { margin: 0.25rem 0; }
.card form { margin: 0.75rem 0 0; }

@media (max-width: 640px) {
  header { align-items: stretch; flex-direction: column; }
  header, main { padding: 0.85rem; }
  button, a.cancel { display: block; width: 100%; text-align: center; }
}