:root {
    color-scheme: light;
    font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
}

body {
    margin: 0;
    background: #f6f3ee;
    color: #1f1b16;
}

.site-header,
.site-main {
    max-width: 40rem;
    margin: 0 auto;
    padding: 1.5rem 1.25rem;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

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

.session {
    margin: 0;
    font-size: 0.9rem;
}

.session p {
    margin: 0 0 0.25rem;
}

.session button {
    margin-top: 0.35rem;
}

.panel {
    background: #fff;
    border: 1px solid #d9d1c7;
    border-radius: 0.5rem;
    padding: 1.25rem;
}

label,
input,
button {
    display: block;
    width: 100%;
}

label {
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

input {
    margin-top: 0.25rem;
    padding: 0.5rem 0.6rem;
    box-sizing: border-box;
}

button {
    margin-top: 1rem;
    padding: 0.6rem 0.8rem;
    width: auto;
}

.validation-summary {
    color: #8a1f11;
}

.muted {
    color: #5c564e;
}