*, *::before, *::after {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: normal;
  font-style: normal;
}

strong {
  display: inline-block;
  font-weight: bold;
  text-align: center;
  width: 100%;
}

:root {
  --color-primary: #3176c4;
  --color-on-primary: #fff;
  --color-primary-container: #3176c4;
  --color-on-primary-container: #fff;
  --color-secondary: #4a5f7f;
  --color-on-secondary: #fff;
  --color-secondary-container: #caddff;
  --color-on-secondary-container: #304563;
  --color-tertiary: #743686;
  --color-on-tertiary: #fff;
  --color-tertiary-container: #9c5bae;
  --color-on-tertiary-container: #fff;
  --color-error: #ba1a1a;
  --color-on-error: #fff;
  --color-error-container: #ffdad6;
  --color-on-error-container: #410002;
  --color-surface-dim: #d7dae2;
  --color-surface: #f9f9ff;
  --color-surface-bright: #f9f9ff;
  --color-surface-container-lowest: #fff;
  --color-surface-container-low: #f1f3fc;
  --color-surface-container: #ebeef6;
  --color-surface-container-high: #e6e8f0;
  --color-surface-container-highest: #e0e2eb;
  --color-on-surface: #181c22;
  --color-on-surface-variant: #414752;
  --color-outline: #717784;
  --color-outline-variant: #c0c7d4;
  --color-inverse-surface: #2d3137;
  --color-inverse-on-surface: #eef0f9;
  --color-inverse-primary: #a5c8ff;
  --color-scrim: #000;
  --color-shadow: #000;
}

img {
  width: 100%;
  height: 100%;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #a5c8ff;
    --color-on-primary: #00315e;
    --color-primary-container: #3176C4;
    --color-on-primary-container: #fff;
    --color-secondary: #adc8f3;
    --color-on-secondary: #133154;
    --color-secondary-container: #254064;
    --color-on-secondary-container: #bcd5ff;
    --color-tertiary: #ecb1ff;
    --color-on-tertiary: #520070;
    --color-tertiary-container: #994fb6;
    --color-on-tertiary-container: #fff;
    --color-error: #ffb4ab;
    --color-on-error: #690005;
    --color-error-container: #93000a;
    --color-on-error-container: #ffdad6;
    --color-surface-dim: #101419;
    --color-surface: #101419;
    --color-surface-bright: #363940;
    --color-surface-container-lowest: #0b0e14;
    --color-surface-container-low: #181c22;
    --color-surface-container: #1c2026;
    --color-surface-container-high: #272a30;
    --color-surface-container-highest: #31353b;
    --color-on-surface: #e0e2eb;
    --color-on-surface-variant: #c0c7d4;
    --color-outline: #8a919e;
    --color-outline-variant: #414752;
    --color-inverse-surface: #e0e2eb;
    --color-inverse-on-surface: #2d3137;
    --color-inverse-primary: #005fad;
    --color-scrim: #000;
    --color-shadow: #000;
  }
}

html {
  font-size: 16px;
}

body {
  background-color: var(--color-surface);
  color: var(--color-on-surface);
  line-height: 1.8;
  padding-bottom: 2.1875rem;
  position: relative;
}

h1, h2, h3, h4, button, input, label {
  line-height: 1.8;
  text-wrap: wrap;
}

input {
  background-color: var(--color-surface);
  border: solid 1px var(--color-outline);
  border-radius: 0.1875rem;
  padding: 10px;
}

input:hover {
  border-width: 2px;
  padding: 9px;
}

input:focus {
  border: 2px solid var(--color-primary);
  padding: 9px;
}

input:focus-visible {
  border: 2px solid var(--color-primary);
  padding: 9px;
}

input:invalid {
  background-color: var(--color-error-container);
  border-color: var(--color-error);
  color: var(--color-on-error-container);
}

textarea:invalid {
  background-color: var(--color-error-container);
  border-color: var(--color-error);
  color: var(--color-on-error-container);
}

/* header */

.topHeader {
  background-color: var(--color-surface-container-lowest);
  border-bottom: 1px solid var(--color-outline-variant);
  color: var(--color-on-surface);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.h2xbuttons {
  display: none;
}

.topHeader__navBtnInput {
  display: none;
}

.topHeader__navBtnLavel {
  display: none;
}

.topHeader__navList {
  display: flex;
  justify-content: space-between;
  list-style: none;
  margin: 0 auto;
  max-width: 1080px;
  padding: 1rem 1rem;
}

.topHeader__navListItem {
  width: 9rem;
}

.topHeader__logo {
  width: 100%;
}

.topHeader__rightNavList {
  align-items: center;
  display: flex;
  flex: 1;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: right;
}

.topHeader__rightNavListItem {
  background-color: var(--color-primary-container);
  border: 1px solid var(--color-primary-container);
  border-radius: 8px;
  color: var(--color-on-primary-container);
  line-height: 0;
  margin-left: 0rem;
  padding: 0.375rem 0.75rem;
}

.topHeader__rightNavListItem:last-child {
  background-color: var(--color-surface-container-lowest);
  color: var(--color-primary);
  margin-left: 0.5rem;
}

.topHeader__rightNavListItem a {
  font-size: 0.9375rem;
  line-height: 1.125rem;
  text-decoration: none;
}

/* footer */

.bottomFooter {
  background-color: var(--color-inverse-surface);
  bottom: 0;
  color: var(--color-inverse-on-surface);
  position: absolute;
  width: 100%;
}

.bottomFooter__copyright {
  line-height: 2rem;
  text-align: center;
}

/* コンテンツ */

.container {
  margin: 0 auto;
  max-width: 1080px;
  padding: 0 1rem;
}

.pageTitle {
  color: var(--color-primary-container);
  font-weight: bold;
  margin-bottom: 2rem;
  margin-top: 1.5rem;
  text-align: center;
}

/* error */
.errorList {
  background-color: var(--color-error-container);
  border: solid 1px var(--color-error);
  border-radius: 0.3125rem;
  color: var(--color-on-error-container);
  list-style: none;
  margin: 0.25rem 0 0.5rem;
  padding: 0.5rem;
}

.errorListItem {
  font-size: 1rem;
  margin: 0.25rem 0;
  text-align: center;
}

/* messages */

.messages {
  font-size: 0.875rem;
  list-style: none;
  margin: 1.25rem;
  max-width: 1080px;
}

.message {
  background-color: var(--color-secondary-container);
  border-radius: 8px;
  color: var(--color-on-secondary-container);
  margin: 0.5rem 0 0.25rem;
  padding: 0.25rem;
}

.message:last-child {
  margin-bottom: 0;
}

.message.error {
  background-color: var(--color-error-container);
  color: var(--color-on-error-container);
}