@import "foundation/variables.css";

/* AI_TRAINING_AND_CLONING_PROHIBITED: Search indexing and site introductions are welcome, but this stylesheet may not be copied, cloned, converted, or used for AI training without explicit written permission. */

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

:where(h1, h2, h3, h4, h5, h6) {
  margin-block: 0;
  margin-inline: 0;
  font-size: inherit;
  font-weight: inherit;
}

@media (prefers-reduced-motion: reduce) {
  *,
  ::before,
  ::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

:root {
  color-scheme: light;
  font-family: var(--font-ja);
  font-weight: 400;
}

body {
  container: app / inline-size;
  min-height: 100svh;
  overflow-x: clip;
  background: var(--bg);
  color: var(--ui);
  transition: background-color .18s ease, color .18s ease;
}

.pg_about {
  --bg: #f8f8f8;
  --text: rgb(34, 34, 34);
  --ui: rgb(34, 34, 34);
  --ui-soft: rgba(34, 34, 34, .66);
  --line: rgba(34, 34, 34, .18);
  background: #f8f8f8;
  color: rgb(34, 34, 34);
}

/* --------------------------------------------------------------------------
   App Layout
   -------------------------------------------------------------------------- */

.ly_app {
  block-size: 100dvh;
  inline-size: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
  padding-block: var(--space-xl);
  padding-inline: var(--page-gutter);
  row-gap: var(--space-xl);
  overflow-x: clip;
  overflow-y: auto;
  overscroll-behavior: none;
}

@container app (max-width: 767px) {
  .ly_app {
    --ly_stage-lift: 10px;
    --ly_grid-gap: 14px;
    padding-block: 16px;
    padding-inline: var(--page-gutter);
    row-gap: 14px;
    overflow-y: hidden;
  }

  .ly_app:not(.ly_app__page) {
    block-size: 100dvh;
    overflow-y: hidden;
    padding-block: 16px max(12px, env(safe-area-inset-bottom));
    row-gap: 10px;
  }
}

@media (max-height: 720px) {
  @container app (max-width: 767px) {
    .ly_app {
      --ly_stage-lift: 6px;
      row-gap: 8px;
      padding-block: 8px max(12px, env(safe-area-inset-bottom));
    }
  }
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.ly_headerWrapper {
  grid-column: 1;
  container: header / inline-size;
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--ly_content-max);
  justify-self: center;
}

.ly_header {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: center;
  column-gap: var(--ly_grid-gap);
  position: relative;
  z-index: 2;
  min-width: 0;
}

@container header (max-width: 590px) {
  .ly_header {
    grid-template-columns: 1fr auto;
    gap: 12px 16px;
  }
  .ly_header__about {
    gap: 0px;
  }
}

.bl_siteBrand {
  grid-column: 1 / span 5;
  justify-self: start;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 20px;
}

@container header (max-width: 590px) {
  .bl_siteBrand {
    grid-column: 1;
    grid-row: 1;
    min-height: 44px;
    align-items: center;
    z-index: 1;
  }
}


.bl_siteBrand_ttl {
  font-size: var(--fontSize-brand);
  line-height: 1;
  letter-spacing: 0;
  font-family: var(--font-en);
  font-weight: 400;
}

.bl_siteBrand_home {
  color: inherit;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   Helpers
   -------------------------------------------------------------------------- */

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

/* --------------------------------------------------------------------------
   Course Select
   -------------------------------------------------------------------------- */

.bl_courseSelect {
  grid-column: 1 / 5;
  justify-self: end;
  position: relative;
  width: min(100%, clamp(286px, 30vw, 320px));
  min-width: 0;
}

@container app (max-width: 1200px) {
  .bl_courseSelect {
    grid-column: 1 / 7;
  }
}

@container header (max-width: 590px) {
  .bl_courseSelect {
    grid-column: 1 / -1;
    grid-row: 2;
    inline-size: 100%;
    min-inline-size: 0;
    justify-self: stretch;
  }
}

.bl_courseSelect_select {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: 46px;
  appearance: none;
  padding-block: 0;
  padding-inline: 18px 40px;
  border: 1px solid var(--ui);
  border-radius: 999px;
  background: var(--ui);
  color: var(--bg);
  font-size: var(--fontSize-base);
  line-height: 1.2;
  font-weight: 400;
}

@container header (max-width: 590px) {
  .bl_courseSelect_select {
    min-height: 44px;
    font-size: var(--fontSize-base);
    line-height: 1.2;
  }
}

[lang="en"] {
  font-family: var(--font-en);
  font-weight: 400;
}

[lang="ja"] {
  font-family: var(--font-ja);
  font-weight: 400;
}

.bl_courseSelect::after {
  content: "";
  position: absolute;
  inset-inline-end: 18px;
  inset-block-start: 50%;
  width: 8px;
  height: 8px;
  border-inline-end: 2px solid var(--bg);
  border-block-end: 2px solid var(--bg);
  transform: translateY(-65%) rotate(45deg);
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Header Tools
   -------------------------------------------------------------------------- */

.ly_header_tools {
  grid-column: 8 / -1;
  justify-self: end;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: center;
  column-gap: var(--ly_grid-gap);
  position: relative;
  width: 100%;
}

@container app (max-width: 1200px) {
  .ly_header_tools {
    grid-column: 6 / -1;
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

@container header (max-width: 590px) {
  .ly_header_tools {
    box-sizing: border-box;
    grid-column: 1 / -1;
    grid-row: 1 / span 2;
    justify-self: stretch;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 16px;
    inline-size: 100%;
    min-inline-size: 0;
    max-inline-size: 100%;
  }
}

.el_menuBtn {
  grid-column: 5;
  justify-self: end;
  width: 80%;
  height: 44px;
  padding-block: 0;
  padding-inline: 0;
  border-radius: 0;
  border: 0;
  background: transparent;
  display: inline-grid;
  place-items: center;
  font-weight: 400;
  position: relative;
}

@container app (max-width: 1200px) {
  .el_menuBtn {
    width: 100%;
    grid-column: 7;
  }
}

@container header (max-width: 590px) {
  .el_menuBtn {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
    align-self: center;
    width: 54px;
  }
}

.el_menuBtn:focus-visible {
  outline: 1px solid var(--ui);
  outline-offset: 4px;
}

.el_menuBtn_lines {
  width: 100%;
  height: 11px;
  display: grid;
  align-content: space-between;
}

.el_menuBtn_line {
  display: block;
  height: 2px;
  background: var(--ui);
  transition: transform .18s ease, opacity .18s ease;
}

.el_menuBtn[aria-expanded="true"] .el_menuBtn_line:nth-child(1) {
  transform: translateY(4.5px) rotate(20deg);
}

.el_menuBtn[aria-expanded="true"] .el_menuBtn_line:nth-child(2) {
  transform: translateY(-4.5px) rotate(-20deg);
}

/* --------------------------------------------------------------------------
   Site Menu
   -------------------------------------------------------------------------- */

.bl_siteMenu {
  position: absolute;
  inset-inline-end: 0;
  inset-block-start: calc(100% + 12px);
  width: min(100%, 320px);
  padding-block: 10px;
  padding-inline: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--ui);
  color: var(--bg);
  box-shadow: 0 18px 48px rgba(0, 0, 0, .18);
  z-index: 6;
}

@container header (max-width: 590px) {
  .bl_siteMenu {
    width: min(320px, calc(100vw - 48px));
    inset-block-start: calc(100% + 12px);
  }
}

.bl_siteMenuSponsor {
  display: grid;
  gap: .4em;
  margin-block-start: 8px;
  padding-block: 14px;
  padding-inline: 18px;
  border-block-start: 1px solid color-mix(in srgb, var(--bg) 18%, transparent);
  color: inherit;
  text-decoration: none;
}

.bl_siteMenuSponsor_label {
  font-family: var(--font-en);
  font-size: var(--fontSize-xs);
  line-height: 1;
  opacity: .66;
}

.bl_siteMenuSponsor_name {
  font-family: var(--font-en);
  font-size: var(--fontSize-md);
  line-height: 1;
}

.bl_siteMenuSponsor_txt {
  font-size: var(--fontSize-xs);
  line-height: 1.5;
  opacity: .78;
}

@media (any-hover: hover) {
  .bl_siteMenuSponsor:hover {
    background: color-mix(in srgb, var(--bg) 12%, transparent);
  }
}

.bl_siteMenu[hidden] {
  display: none;
}

.bl_siteMenu_item {
  width: 100%;
  min-height: 48px;
  padding-block: 0;
  padding-inline: 18px;
  background: transparent;
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fontSize-base);
  text-align: start;
  text-decoration: none;
}

.bl_siteMenu_item::after {
  content: "";
  width: 7px;
  height: 7px;
  border-inline-end: 1px solid currentColor;
  border-block-end: 1px solid currentColor;
  transform: rotate(-45deg);
  opacity: .72;
}

.bl_siteMenu_item:focus-visible {
  background: color-mix(in srgb, var(--bg) 12%, transparent);
}

@media (any-hover: hover) {
  .bl_siteMenu_item:hover {
    background: color-mix(in srgb, var(--bg) 12%, transparent);
  }
}

/* --------------------------------------------------------------------------
   Play Stage
   -------------------------------------------------------------------------- */

.ly_stage {
  grid-column: 1;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--ly_grid-gap);
  place-items: center;
  min-height: 0;
  min-width: 0;
  width: 100%;
  max-width: var(--ly_content-max);
  justify-self: center;
  padding-block: var(--ly_stage-padding-block);
  padding-inline: 0;
  position: relative;
}

@container app (max-width: 767px) {
  .ly_stage {
    box-sizing: border-box;
    grid-template-columns: 1fr;
    padding-block: 18px;
    padding-inline: 0;
  }

  .ly_app:not(.ly_app__page) .ly_stage {
    padding-block: 10px 16px;
  }
}

@media (max-height: 720px) {
  @container app (max-width: 767px) {
    .ly_stage {
      padding-block: 8px;
      padding-inline: 0;
    }

    .ly_app:not(.ly_app__page) .ly_stage {
      padding-block: 4px 10px;
    }
  }
}

.bl_contrast {
  grid-column: 3 / 11;
  width: 100%;
  min-width: 0;
  display: grid;
  justify-items: center;
  text-align: center;
  position: relative;
  transform: translateY(calc(var(--ly_stage-lift) * -1));
}

@container app (max-width: 1200px) {
  .bl_contrast {
    grid-column: 2 / 12;
  }
}

@container app (max-width: 767px) {
  .bl_contrast {
    grid-column: 1;
  }

  .ly_app:not(.ly_app__page) .bl_contrast {
    inline-size: 100%;
    min-inline-size: 0;
    max-inline-size: 100%;
    justify-self: stretch;
  }
}

.bl_contrast_target {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-block-end: 1.6em;
  padding-block: 0 .8em;
  padding-inline: 0;
  border-block-end: 1px solid var(--ui);
  background: transparent;
  color: var(--ui);
  font-size: 1.2em;
  letter-spacing: .03em;
  transition: transform .42s cubic-bezier(.2, .8, .2, 1);
  will-change: transform;
}

@container app (max-width: 767px) {
  .bl_contrast_target {
    font-size: 1em;
  }
}

@media (max-height: 720px) {
  @container app (max-width: 767px) {
    .bl_contrast_target {
      margin-block-end: 12px;
    }
  }
}

.bl_sample {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  color: var(--text);
  letter-spacing: 0;
  overflow-wrap: normal;
  word-break: normal;
  line-break: auto;
  white-space: normal;
  transition: color .12s ease, transform .42s cubic-bezier(.2, .8, .2, 1);
  user-select: none;
  will-change: transform;
}

.ly_app.is_answered .bl_contrast_target,
.ly_app.is_answered .bl_sample {
  transform: translateY(-70px);
}

@container app (max-width: 767px) {
  .ly_app.is_answered .bl_contrast_target,
  .ly_app.is_answered .bl_sample {
    transform: translateY(-36px);
  }
}

.bl_sample.bl_sample__lg {
  --clamp-min: 34;
  --clamp-max: 90;
  font-size: var(--clamp);
  line-height: 1.2;
  font-weight: 400;
  max-width: 100%;
}

@container app (max-width: 767px) {
  .bl_sample.bl_sample__lg {
    max-width: none;
  }
}

.bl_sample.bl_sample__normal {
  display: grid;
  --clamp-min: 13;
  --clamp-max: 18;
  font-size: var(--clamp);
  line-height: 1.74;
  font-weight: 400;
  max-width: none;
  text-align: start;
}

@container app (max-width: 767px) {
  .bl_sample.bl_sample__normal {
    line-height: 1.6;
  }
}

.bl_sample_line {
  display: block;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: normal;
  word-break: normal;
  white-space: normal;
}

.bl_sample_line__ja {
  overflow-wrap: anywhere;
  line-break: loose;
}

.bl_sample_line__en {
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
}

.bl_sample.bl_sample__normal .bl_sample_line + .bl_sample_line {
  margin-block-start: 16px;
}

@media (max-height: 720px) {
  @container app (max-width: 767px) {
    .bl_sample.bl_sample__normal .bl_sample_line + .bl_sample_line {
      margin-block-start: 10px;
    }
  }
}

/* --------------------------------------------------------------------------
   Result
   -------------------------------------------------------------------------- */

.bl_result {
  position: absolute;
  inset-block-start: 95%;
  inset-inline-start: 50%;
  width: min(620px, calc(100vw - 36px));
  min-height: 78px;
  display: grid;
  justify-items: center;
  gap: .6em;
  color: var(--text);
  font-size: clamp(calc(15 * var(--to-rem)), 1.6vw, calc(18 * var(--to-rem)));
  transform: translateX(-50%);
  pointer-events: none;
}

@container app (max-width: 767px) {
  .bl_result {
    inset-block-start: 98%;
  }
}

.bl_result_score {
  --clamp-min: 32;
  --clamp-max: 83;
  font-size: var(--clamp);
  line-height: 1;
  font-family: var(--font-en);
  font-weight: 400;
  letter-spacing: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .18em;
}

.bl_score_slash {
  position: relative;
  width: .36em;
  height: .86em;
  display: inline-block;
}

.bl_score_slash::before {
  content: "";
  position: absolute;
  inset-inline-start: 50%;
  inset-block-start: 50%;
  width: 2px;
  height: 100%;
  border-radius: 999px;
  background: currentColor;
  transform: translate(-50%, -50%) rotate(17deg);
}

.bl_result.is_fail .bl_result_score {
  color: var(--miss);
}

.bl_result.is_fail .bl_result_message {
  color: var(--miss);
}

.bl_result.is_shaking {
  animation: an_shake .32s ease-in-out both;
}

.bl_confettiCanvas {
  position: fixed;
  inset: 0;
  z-index: 8;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
}

@keyframes an_shake {
  0%, 100% { transform: translateX(-50%); }
  18% { transform: translateX(calc(-50% - 12px)); }
  36% { transform: translateX(calc(-50% + 10px)); }
  54% { transform: translateX(calc(-50% - 8px)); }
  72% { transform: translateX(calc(-50% + 6px)); }
}

.bl_result_message {
  --clamp-min: 13;
  --clamp-max: 18;
  font-size: var(--clamp);
  min-height: 1.4em;
  line-height: 1;
  font-weight: 400;
  overflow-wrap: anywhere;
  letter-spacing: .03em;
}

/* --------------------------------------------------------------------------
   Controls
   -------------------------------------------------------------------------- */

.ly_controls {
  grid-column: 1;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--ly_grid-gap);
  row-gap: 14px;
  align-items: end;
  position: relative;
  z-index: 2;
  min-width: 0;
  width: 100%;
  max-width: var(--ly_content-max);
  justify-self: center;
}

@container app (max-width: 767px) {
  .ly_controls {
    box-sizing: border-box;
    grid-template-columns: 1fr;
  }

  .ly_app:not(.ly_app__page) .ly_controls {
    row-gap: 8px;
  }
}

.bl_slider {
  grid-column: 3 / 8;
  display: grid;
  min-width: 0;
}

@container app (max-width: 1200px) {
  .bl_slider {
    grid-column: 1 / span 8;
  }
}

@container app (max-width: 767px) {
  .bl_slider {
    grid-column: 1;
    inline-size: 100%;
    min-inline-size: 0;
    max-inline-size: 100%;
    justify-self: center;
    width: 100%;
  }
}

.el_range {
  width: 100%;
  height: 48px;
  appearance: none;
  border-radius: 999px;
  background: transparent;
  border: 0;
  position: relative;
  z-index: 1;
  overflow: visible;
}

.bl_slider_range {
  position: relative;
  display: grid;
  align-items: center;
}

.el_range::-webkit-slider-runnable-track {
  height: 16px;
  border-radius: 999px;
  background: var(--rail, linear-gradient(90deg, #ddd, #111));
  box-shadow: inset 0 0 0 3px var(--line);
}

.el_range::-moz-range-track {
  height: 16px;
  border-radius: 999px;
  background: var(--rail, linear-gradient(90deg, #ddd, #111));
  box-shadow: inset 0 0 0 3px var(--line);
}

.bl_slider_boundary {
  position: absolute;
  inset-inline-start: var(--boundary-position, 50%);
  inset-block-start: 50%;
  width: 2px;
  height: 50px;
  border-radius: 999px;
  background: var(--ui);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--bg) 72%, transparent);
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s ease;
  z-index: 3;
}

.bl_slider_boundary.is_visible {
  opacity: 1;
  visibility: visible;
}

.el_range::-webkit-slider-thumb {
  appearance: none;
  width: 13px;
  height: 48px;
  border-radius: 6px;
  background:
    linear-gradient(var(--ui), var(--ui)) center / 1px calc(100% - 10px) no-repeat,
    var(--bg);
  border: 2px solid var(--ui);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, .36);
  margin-block-start: -16px;
  position: relative;
  z-index: 2;
}

.el_range::-moz-range-thumb {
  width: 11px;
  height: 42px;
  border-radius: 6px;
  background:
    linear-gradient(var(--ui), var(--ui)) center / 1px calc(100% - 10px) no-repeat,
    var(--bg);
  border: 2px solid var(--ui);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, .36);
}

.bl_actions {
  grid-column: 8 / 11;
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 16px;
  min-width: 0;
}

@container app (max-width: 1200px) {
  .bl_actions {
    grid-column: 9 / -1;
  }
}

@container app (max-width: 767px) {
  .bl_actions {
    grid-column: 1;
    inline-size: 100%;
    min-inline-size: 0;
    max-inline-size: 100%;
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    width: 100%;
    justify-self: center;
    justify-content: stretch;
  }

  .bl_actions .el_btn__share {
    order: 1;
  }

  .bl_actions .el_btn__primary {
    order: 2;
  }

  .bl_actions .el_btn__shuffle {
    order: 3;
  }
}

.el_btn {
  min-height: 46px;
  padding-block: 0;
  padding-inline: 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .44);
  backdrop-filter: blur(14px);
  color: var(--ui);
  font-weight: 400;
  white-space: nowrap;
}

@container app (max-width: 767px) {
  .bl_actions .el_btn {
    width: 100%;
    min-width: 0;
    padding-inline: 12px;
  }
}

.el_btn.el_btn__primary {
  background: var(--ui);
  color: var(--bg);
  border-color: var(--ui);
  font-family: var(--font-en);
  min-width: 98px;
  width: 100%;
}

.el_btn.el_btn__icon {
  width: 46px;
  min-width: 46px;
  padding: 0;
  display: inline-grid;
  place-items: center;
}

@container app (max-width: 767px) {
  .bl_actions .el_btn.el_btn__icon {
    aspect-ratio: 1;
  }
}

.el_btn_iconImg {
  width: 21px;
  height: 21px;
  display: block;
}

/* --------------------------------------------------------------------------
   Content Lists
   -------------------------------------------------------------------------- */

.bl_rules {
  display: grid;
  gap: 8px;
  list-style: none;
}

.bl_rules_item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
  padding-block-start: 10px;
  border-block-start: 1px solid #e5e5e5;
  color: #424242;
  line-height: 1.45;
}

.bl_rules_label {
  color: #171717;
}

.bl_history {
  display: grid;
  gap: 0;
  list-style: none;
  border-block-start: 1px solid var(--line);
}

.bl_history_item {
  display: grid;
  grid-template-columns: minmax(5.4em, auto) minmax(0, 1fr);
  column-gap: clamp(18px, 2vw, 28px);
  padding-block: .82em;
  border-block-end: 1px solid var(--line);
}

.bl_history_date {
  font-family: var(--font-en);
  white-space: nowrap;
}

.bl_history_txt {
  min-width: 0;
}

.bl_history_link {
  color: inherit;
  text-decoration: none;
  border-block-end: 1px solid currentColor;
}


/* --------------------------------------------------------------------------
   Static Page Layout
   -------------------------------------------------------------------------- */

.ly_app__page {
  block-size: auto;
  min-block-size: 100svh;
  grid-template-rows: auto 1fr;
  overflow-y: visible;
}

.ly_app__about {
  padding-inline: 0;
}

.ly_app__about .ly_headerWrapper {
  padding-inline: var(--page-gutter);
}

.ly_app__page[data-lang-active="ja"] .bl_langPanel[lang="en"],
.ly_app__page[data-lang-active="en"] .bl_langPanel[lang="ja"] {
  display: none;
}


.ly_pageMain {
  grid-column: 1;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--ly_grid-gap);
  width: 100%;
  max-width: var(--ly_content-max);
  justify-self: center;
  padding-block-start: var(--space-5xl);
  padding-inline: var(--page-gutter);
}

@container app (max-width: 767px) {
  .ly_pageMain {
    grid-template-columns: 1fr;
    padding-block-start: var(--space-3xl);
  }
}

/* --------------------------------------------------------------------------
   404 Page
   -------------------------------------------------------------------------- */

.ly_error {
  grid-column: 1;
  display: grid;
  place-items: center;
  min-block-size: 100%;
  inline-size: 100%;
  max-width: var(--ly_content-max);
  justify-self: center;
  position: relative;
  overflow: hidden;
}

.bl_errorParticle {
  inline-size: min(100%, 1100px);
  block-size: min(64svh, 520px);
  display: block;
  touch-action: none;
}

.bl_error_fallback {
  color: var(--ui);
  font-family: var(--font-en);
  font-size: var(--fontSize-hero);
  line-height: .9;
  text-align: center;
}

/* --------------------------------------------------------------------------
   About Page
   -------------------------------------------------------------------------- */

.bl_about {
  grid-column: 1 / 13;
  display: grid;
  min-width: 0;
  gap: 0;
}

@container app (max-width: 767px) {
  .bl_about {
    grid-column: 1;
    gap: 0;
  }
}

.bl_aboutHero {
  display: grid;
  min-width: 0;
  gap: 1.2rem;
  padding-block-end: var(--space-4xl);
}

.bl_aboutHero_ttl {
  font-family: var(--font-en);
  font-size: var(--fontSize-hero);
  line-height: .95;
  font-weight: 400;
  letter-spacing: 0;
}


.bl_aboutHero_txt {
  color: var(--ui);
  font-size: var(--fontSize-base);
  line-height: 1.8;
}

.bl_aboutHero_txt[lang="ja"],
.bl_langContent_item[lang="ja"] {
  overflow-wrap: anywhere;
  word-break: normal;
}

.bl_aboutKicker {
  color: var(--ui-soft);
  font-family: var(--font-en);
  font-size: var(--fontSize-md);
  line-height: 1;
}

.bl_aboutNav {
  display: flex;
  flex-wrap: wrap;
  gap: 1em 1.4em;
  padding-block: var(--space-lg) var(--space-4xl);
  border-block-start: 1px solid var(--ui);
  font-size: var(--fontSize-base);
}

.bl_aboutNav_link,
.bl_socialLinks_link,
.bl_aboutReference_link {
  color: inherit;
  text-decoration: none;
  border-block-end: 1px solid currentColor;
}

.bl_aboutSection {
  display: grid;
  min-width: 0;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: var(--space-3xl);
  padding-block: var(--space-3xl);
  border-block-start: 1px solid var(--line);
}

@container app (max-width: 767px) {
  .bl_aboutSection {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

.bl_aboutSection:focus {
  outline: 0;
}

.bl_aboutSection.is_arrived {
  animation: an_sectionArrive .9s ease-in both;
}

@keyframes an_sectionArrive {
  0% {
    background: color-mix(in srgb, var(--ui) 13%, transparent);
  }

  100% {
    background: transparent;
  }
}

.bl_aboutHeading {
  grid-column: 1 / 3;
  display: grid;
  align-content: start;
  gap: .9rem;
}

@container app (max-width: 767px) {
  .bl_aboutHeading {
    grid-column: 1;
  }
}

.bl_aboutHeading_ttl {
  font-size: var(--fontSize-lg);
  line-height: 1.35;
  font-weight: 400;
}

.bl_langContent {
  grid-column: 3 / -1;
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

@container app (max-width: 767px) {
  .bl_langContent {
    grid-column: 1;
    grid-template-columns: 1fr;
  }
}

.bl_langContent_item {
  display: grid;
  min-width: 0;
  align-content: start;
  gap: 1.1em;
  font-size: var(--fontSize-base);
  line-height: 1.85;
}

.bl_langContent_item[lang="en"] {
  line-height: 1.7;
}

.bl_socialLinks {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem 1.2rem;
}

/* --------------------------------------------------------------------------
   About Sponsor Section
   -------------------------------------------------------------------------- */

.bl_aboutSponsor {
  display: grid;
  gap: var(--space-lg);
  padding-block: var(--space-2xl);
  padding-inline: var(--space-2xl);
  background-color: #e9e9e9;
  border-radius: 12px;
}

.bl_aboutSponsor_head {
  display: grid;
  gap: 0.6em;
}

.bl_aboutSponsor_ttl {
  font-size: var(--fontSize-lg);
  line-height: 1.35;
  font-weight: 400;
}

.bl_aboutSponsor_txt {
  font-size: var(--fontSize-base);
  line-height: 1.8;
}

.bl_aboutSponsor_preview {
  position: relative;
  display: grid;
  grid-auto-flow: column;
  gap: var(--space-lg);
  min-block-size: 72px;
  padding-block: var(--space-md) calc(var(--space-md) + 1.4em);
  padding-inline: var(--space-lg);
  color: var(--ui);
  text-decoration: none;
  background-color: #fff;
  border-radius: 6px;
  grid-template-columns: minmax(0, 180px) auto;
}

.bl_aboutSponsor_preview::after {
  content: "";
  position: absolute;
  inset-inline-end: var(--space-lg);
  inset-block-end: var(--space-md);
  inline-size: .82em;
  block-size: .82em;
  border-block-start: 1px solid currentColor;
  border-inline-end: 1px solid currentColor;
}

.bl_aboutSponsor_preview::before {
  content: "";
  position: absolute;
  inset-inline-end: calc(var(--space-lg) + .1em);
  inset-block-end: calc(var(--space-md) + .08em);
  inline-size: .9em;
  block-size: 1px;
  background: currentColor;
  transform: rotate(-45deg);
  transform-origin: inline-end center;
}

.bl_aboutSponsor_body {
  display: grid;
  gap: .45em;
  min-width: 0;
}

.bl_aboutSponsor_name {
  font-size: var(--fontSize-md);
  line-height: 1.25;
}

.bl_aboutSponsor_desc {
  font-family: var(--font-ja);
  font-size: var(--fontSize-sm);
  line-height: 1.7;
}


.bl_aboutSponsor_logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: 44px;
  padding-inline: 1.4em;
  font-size: var(--fontSize-sm);
  line-height: 1;
  white-space: nowrap;
}

.bl_aboutSponsor_logoSvg {
  display: block;
  inline-size: 116px;
  block-size: auto;
  color: currentColor;
}

@container app (max-width: 767px) {
  .bl_aboutSponsor {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    padding-block: var(--space-xl);
    padding-inline: var(--space-xl);
  }

  .bl_aboutSponsor_head,
  .bl_aboutSponsor_preview {
    grid-column: 1;
  }

  .bl_aboutSponsor_preview {
    padding-block: var(--space-md) calc(var(--space-md) + 1.4em);
    padding-inline: var(--space-md);
  }

  .bl_aboutSponsor_preview::after {
    inset-inline-end: var(--space-md);
  }

  .bl_aboutSponsor_preview::before {
    inset-inline-end: calc(var(--space-md) + .1em);
  }
}


/* --------------------------------------------------------------------------
   Language Switch
   -------------------------------------------------------------------------- */

.bl_langSwitch {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: .5em;
  color: var(--ui);
  font-family: var(--font-en);
  pointer-events: auto;
  font-size: var(--fontSize-sm);
}


.bl_langSwitch_button {
  color: inherit;
  line-height: 1;
  padding-block: 0.8em;
  padding-inline: 1.4em;
  border-radius: 6px;
  border: 1px solid rgba(36, 36, 36, 0.8);
  background: rgba(36, 36, 36, 0.8);
  font-size: var(--fontSize-md);
}

.bl_langSwitch_button.is_active {
  border: 1px solid #e9e9e9;
}



/* --------------------------------------------------------------------------
   Sponsor Placements
   -------------------------------------------------------------------------- */

.bl_siteMenuSponsor_img {
  display: block;
  inline-size: 100%;
  block-size: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid color-mix(in srgb, var(--bg) 24%, transparent);
}

.bl_floatSponsor {
  display: none;
  inline-size: min(220px, calc(100vi - 48px));
}

.bl_floatSponsor.is_closed {
  display: none;
}

.bl_floatSponsor_link {
  display: block;
  min-inline-size: 0;
  padding: 6px;
  border: 0;
  background: var(--ui);
  box-shadow: 0 18px 48px rgba(0, 0, 0, .12);
  text-decoration: none;
  border-radius: 6px;
}

.bl_floatSponsor_label {
  font-size: var(--fontSize-sm);
  line-height: 1;
  font-weight: 400;
  font-family: var(--font-en);
  color: var(--bg);
  margin-block-end: 0.4em;
}

.bl_floatSponsor_img {
  display: block;
  inline-size: 100%;
  block-size: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--ui);
  border-radius: 4px;
}

.bl_floatSponsor_close {
  position: absolute;
  inset-block-start: -12px;
  inset-inline-end: -12px;
  display: grid;
  place-items: center;
  inline-size: 28px;
  block-size: 28px;
  padding: 0;
  border: 2px solid var(--ui);
  border-radius: 50%;
  background: var(--bg);
  color: var(--ui);
  font-family: var(--font-en);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

@container app (min-width: 1300px) {
  .bl_floatSponsor {
    position: fixed;
    inset-inline-end: var(--space-xl);
    inset-block-end: var(--space-xl);
    z-index: 4;
    display: block;
  }
}




/* --------------------------------------------------------------------------
   Header Flex Overrides
   -------------------------------------------------------------------------- */
.ly_header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ly_grid-gap);
  min-inline-size: 0;
}

.bl_siteBrand {
  grid-column: auto;
  justify-self: auto;
  flex: 1 1 auto;
  min-inline-size: 0;
}

.ly_header_tools,
.ly_header_tools__page {
  grid-column: auto;
  justify-self: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
  inline-size: auto;
  min-inline-size: 0;
}

.bl_courseSelect {
  grid-column: auto;
  justify-self: auto;
  flex: 0 1 clamp(286px, 30vw, 320px);
  inline-size: clamp(286px, 30vw, 320px);
}

.el_menuBtn,
.ly_header_tools__page .el_menuBtn {
  grid-column: auto;
  justify-self: auto;
  flex: 0 0 54px;
  inline-size: 54px;
  width: 54px;
}

.ly_header_tools__page .bl_langSwitch,
.ly_header_tools__page .ly_header_aboutLink {
  grid-column: auto;
  justify-self: auto;
}

.ly_header_aboutLink {
  min-block-size: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45em;
  padding-block: 0;
  padding-inline: 1.5em 2em;
  border: 1px solid var(--ui);
  border-radius: 999px;
  background: var(--ui);
  color: var(--bg);
  font-family: var(--font-en);
  font-size: var(--fontSize-base);
  line-height: 1;
  text-decoration: none;
}

.ly_header_aboutLink_icon {
  display: block;
  inline-size: 1.05em;
  block-size: 1.05em;
  flex: 0 0 auto;
}

.ly_header_aboutLink_txt {
  display: block;
}

@container header (max-width: 590px) {
  .ly_header,
  .ly_header__about {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 16px;
  }

  .bl_siteBrand {
    flex: 1 1 calc(100% - 70px);
    min-block-size: 44px;
  }

  .ly_header_tools,
  .ly_header_tools__page {
    display: contents;
  }

  .bl_courseSelect {
    order: 3;
    flex: 1 0 100%;
    inline-size: 100%;
  }

  .ly_header_tools__page .bl_langSwitch {
    order: 4;
    flex: 1 0 100%;
    inline-size: 100%;
    width: auto;
    justify-content: flex-end;
  }

  .ly_header_aboutLink {
    order: 2;
    min-block-size: 44px;
    padding-inline: 16px 18px;
  }

  .el_menuBtn,
  .ly_header_tools__page .el_menuBtn {
    order: 2;
    flex: 0 0 54px;
    inline-size: 54px;
    width: 54px;
  }

  .bl_siteMenu {
    inset-inline-end: 0;
    inset-block-start: calc(44px + 12px);
  }
}


/* --------------------------------------------------------------------------
   Header Sponsor And Page Tools
   -------------------------------------------------------------------------- */
.bl_siteBrand_sponsor {
  position: relative;
  display: none;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 4px;
  block-size: auto;
  max-inline-size: 120px;
  color: var(--ui);
  font-family: var(--font-en);
  line-height: 1;
  text-decoration: none;
}

.bl_siteBrand_sponsor:not([hidden]) {
  display: inline-flex;
}

.bl_siteBrand_sponsor::before {
  content: "Sponsored by";
  color: var(--ui-soft);
  font-family: var(--font-en);
  font-size: 10px;
  line-height: 1;
  white-space: nowrap;
}

.bl_siteBrand_sponsorSvg {
  display: block;
  inline-size: 116px;
  block-size: auto;
  color: var(--ui);
}

@container header (max-width: 1000px) {
  .bl_siteBrand_sponsor:not([hidden]) {
    display: none;
  }
}

.ly_header_tools__page .bl_langSwitch {
  gap: 0;
  font-size: var(--fontSize-sm);
}

.ly_header_tools__page .bl_langSwitch_button {
  padding-block: .3em;
  padding-inline: .35em;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ui);
}

.ly_header_tools__page .bl_langSwitch_button + .bl_langSwitch_button::before {
  content: "/";
  margin-inline-end: .7em;
  color: var(--ui-soft);
}

.ly_header_tools__page .bl_langSwitch_button.is_active {
  border: 0;
  text-decoration: underline;
  text-underline-offset: .25em;
}

.bl_siteMenu_item__try {
  display: none;
}

@container header (max-width: 590px) {
  .ly_header__about {
    flex-wrap: nowrap;
  }

  .ly_header__about .bl_siteBrand {
    flex: 1 1 auto;
  }

  .ly_header_tools__page {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 14px;
  }

  .ly_header_tools__page .bl_langSwitch {
    display: inline-flex;
    flex: 0 0 auto;
    inline-size: auto;
    width: auto;
    order: 0;
  }

  .ly_header_tools__page .ly_header_aboutLink {
    display: none;
  }

  .ly_header_tools__page .el_menuBtn {
    order: 0;
  }

  .ly_header__about .bl_siteMenu {
    inset-block-start: calc(100% + 12px);
  }

  .bl_siteMenu_item__try {
    display: flex;
  }
}