:root {
  font:
    16px/1.5 system-ui,
    sans-serif;
  color: #203047;
  background: #f4f6f9;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px max(24px, calc((100vw - 1040px) / 2));
  background: #fff;
  border-bottom: 1px solid #dae0e8;
}
header strong {
  font-size: 24px;
}
header span {
  color: #65738a;
}
nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  max-width: 1040px;
  margin: 20px auto;
  padding: 0 20px;
}
main {
  max-width: 1040px;
  margin: auto;
  padding: 0 20px 40px;
}
section {
  background: white;
  padding: 28px;
  border: 1px solid #dae0e8;
  border-radius: 12px;
}
h1 {
  margin-top: 0;
  font-size: 28px;
}
h2 {
  font-size: 20px;
}
button {
  cursor: pointer;
  background: #235eab;
  color: white;
  border: 0;
  border-radius: 7px;
  padding: 10px 16px;
  font: inherit;
  margin: 5px 0;
}
button:disabled {
  opacity: 0.5;
  cursor: wait;
}
nav button {
  background: #e4ebf5;
  color: #203047;
}
nav button.active {
  background: #235eab;
  color: white;
}
.danger {
  background: #a23636;
}
label {
  display: block;
  max-width: 680px;
  margin: 14px 0;
}
input,
textarea,
select {
  display: block;
  width: 100%;
  padding: 10px;
  border: 1px solid #bac5d4;
  border-radius: 6px;
  font: inherit;
  background: white;
  color: inherit;
  margin-top: 5px;
}
textarea {
  resize: vertical;
}
.row {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  margin: 20px 0;
}
.card,
article {
  background: #f5f8fc;
  border: 1px solid #dae0e8;
  padding: 16px;
  border-radius: 8px;
  margin: 12px 0;
  overflow-wrap: anywhere;
}
.card strong {
  display: block;
}
.login {
  max-width: 440px;
  margin: 10vh auto;
  background: white;
  padding: 32px;
  border-radius: 12px;
}
#error,
#play-error {
  color: #a23636;
}
#notice:not(:empty) {
  background: #e5eefb;
  padding: 12px;
  border-radius: 8px;
}
footer {
  padding: 24px;
  text-align: center;
  color: #65738a;
  font-size: 13px;
}
audio {
  width: 100%;
  max-width: 600px;
}
p {
  white-space: pre-wrap;
}
[hidden] {
  display: none !important;
}