@import url('https://fonts.googleapis.com/css2?family=Hind:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;600;700&display=swap');

/*
 * Official Science Tokyo token subset. Component rules below use tokens only.
 * Design authority: https://design-system.adm.isct.ac.jp/ja/website/style-guide
 * Motor Lab integrates this system and does not claim original authorship.
 */
:root {
  --brand-primary: #1c3177;
  --brand-secondary: #7f96c2;
  --brand-tertiary: #cfdbed;
  --brand-quaternary: #f9fbff;
  --ui-text-default: #000000;
  --ui-text-light: #767676;
  --ui-text-inverted: #ffffff;
  --ui-text-status-disabled: #cccccc;
  --ui-text-brand-primary: var(--brand-primary);
  --ui-status-link: var(--brand-primary);
  --ui-status-hover: #00019c;
  --ui-status-visited: #30016c;
  --ui-status-active: #0a1541;
  --ui-line-status-focus: #dbaf03;
  --ui-background-default: #ffffff;
  --ui-background-brand-primary: var(--brand-primary);
  --ui-background-emphasize-mid-tertiary: #e4ebf6;
  --ui-background-ultra-light: #fafafa;
  --ui-background-separated-area-primary: #faf7f4;
  --ui-line-default: #cccccc;
  --ui-line-thin: #ebebeb;
  --ui-line-bold: #1a1a1a;
  --ui-line-inverted: #ffffff;
  --ui-line-white-transparent-ultra-light: rgb(255 255 255 / 40%);
  --semantic-space-inner-sss: 4px;
  --semantic-space-inner-ss: 6px;
  --semantic-space-inner-s: 8px;
  --semantic-space-inner-ms: 10px;
  --semantic-space-inner-mms: 12px;
  --semantic-space-inner-m: 16px;
  --semantic-space-inner-ml: 20px;
  --semantic-space-inner-l: 24px;
  --semantic-space-inner-ll: 32px;
  --semantic-space-inner-lll: 40px;
  --semantic-space-inner-llll: 48px;
  --semantic-space-outer-sss: 64px;
  --semantic-space-outer-s: 80px;
  --semantic-space-outer-m: 96px;
  --semantic-size-icon-ms: 12px;
  --semantic-size-icon-mml: 20px;
  --semantic-size-icon-ml: 24px;
  --semantic-size-icon-lll: 40px;
  --semantic-size-icon-clickable: 44px;
  --semantic-size-section-sss: 48px;
  --semantic-line-thickness-black: 3px;
  --semantic-line-thickness-heavy: 4px;
  --semantic-corner-radius-s: 4px;
  --semantic-corner-radius-m: 8px;
  --semantic-corner-radius-ll: 16px;
  --semantic-corner-radius-pill: 9999px;
  --elevation-lv1: 0 1px 6px 0 rgb(0 0 0 / 30%), 0 4px 16px 3px rgb(0 0 0 / 10%);
  --mtr-heading-band-start: #f1f4fc;
}

html {
  scroll-behavior: smooth;
}

body:not(.elementor-editor-active) {
  margin: 0;
  background: var(--ui-background-default);
  color: var(--ui-text-default);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  text-underline-offset: 0.15em;
}

html[lang^="en"] body:not(.elementor-editor-active) {
  font-family: "Hind", sans-serif;
}

.mtr-official-header *,
.mtr-official-footer *,
.mtr-main *,
.lab-member-tabs *,
.mtr-course-page * {
  box-sizing: border-box;
}

.mtr-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.mtr-container {
  width: 100%;
  max-width: 1024px;
  margin-inline: auto;
  padding-inline: var(--semantic-space-inner-ll);
}

.mtr-skip-link {
  position: fixed;
  top: var(--semantic-space-inner-s);
  left: var(--semantic-space-inner-s);
  z-index: 10000;
  padding: var(--semantic-space-inner-s) var(--semantic-space-inner-m);
  transform: translateY(-160%);
  border: 2px solid var(--ui-line-status-focus);
  border-radius: var(--semantic-corner-radius-s);
  background: var(--ui-background-default);
  color: var(--ui-text-default);
  font-weight: 700;
}

.mtr-skip-link:focus {
  transform: translateY(0);
}

.mtr-official-header a,
.mtr-official-footer a,
.mtr-main a,
.lab-member-tabs a {
  color: var(--ui-status-link);
  text-decoration-thickness: 1px;
}

.mtr-official-header a:hover,
.mtr-official-footer a:hover,
.mtr-main a:hover,
.lab-member-tabs a:hover {
  color: var(--ui-status-hover);
}

.mtr-official-header a:focus-visible,
.mtr-official-header button:focus-visible,
.mtr-official-footer a:focus-visible,
.mtr-main a:focus-visible,
.mtr-main button:focus-visible,
.mtr-main input:focus-visible,
.lab-member-tabs a:focus-visible,
.lab-member-tabs button:focus-visible,
.mtr-course-page a:focus-visible {
  outline: 3px solid var(--ui-line-status-focus);
  outline-offset: 3px;
}

.mtr-wordmark {
  flex: 0 0 auto;
  width: 34px;
  height: 48px;
  color: var(--brand-primary);
}

.mtr-search-form {
  display: flex;
  width: 100%;
  gap: var(--semantic-space-inner-s);
}

.mtr-search-form__input {
  min-width: 0;
  min-height: var(--semantic-size-icon-clickable);
  flex: 1 1 auto;
  padding: var(--semantic-space-inner-s) var(--semantic-space-inner-m);
  border: 1px solid var(--ui-line-default);
  border-radius: var(--semantic-corner-radius-s);
  background: var(--ui-background-default);
  color: var(--ui-text-default);
  font: inherit;
}

.mtr-search-form__input:hover {
  border-color: var(--ui-line-bold);
}

.mtr-search-form__submit {
  min-height: var(--semantic-size-icon-clickable);
  padding: var(--semantic-space-inner-s) var(--semantic-space-inner-l);
  border: 2px solid var(--brand-primary);
  border-radius: var(--semantic-corner-radius-s);
  background: var(--brand-primary);
  color: var(--ui-text-inverted);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
}

.mtr-search-form__submit:hover {
  border-color: var(--ui-status-hover);
  background: var(--ui-status-hover);
}