@charset "UTF-8";

/* =========================================================
   common.css
   ---------------------------------------------------------
   1. Design Tokens
   2. Base Elements
   3. Layout Primitives
   4. Components
   5. Global Areas
   6. Utilities
   ========================================================= */

:root {
  /* font-size */
  --font-size-lg: var(--primitive-font-size-18);
  --font-size-md: var(--primitive-font-size-16);
  --font-size-sm: var(--primitive-font-size-14);
  --font-size-xs: var(--primitive-font-size-12);
  --font-size-lead: var(--primitive-font-size-24);
  --font-size-lead-fluid: clamp(18px, 2.5vw, 28px);
  --font-size-tag: var(--primitive-font-size-12);
  --font-size-heading-1: var(--primitive-font-size-64);
  --font-size-heading-2: var(--primitive-font-size-48);
  --font-size-heading-3: var(--primitive-font-size-40);
  --font-size-heading-4: var(--primitive-font-size-32);
  --font-size-heading-5: var(--primitive-font-size-24);
  --font-size-heading-6: var(--primitive-font-size-20);
  --font-size-heading-sm: var(--primitive-font-size-14);
  --font-size-navi-sm: var(--primitive-font-size-14);
  --font-size-navi-md: var(--primitive-font-size-16);
  --font-size-navi-lg: var(--primitive-font-size-18);
  --font-size-date: var(--primitive-font-size-14);
  --font-size-display-md: var(--primitive-font-size-80);
  --font-size-display-sm: var(--primitive-font-size-40);
  --page-head-title-en-size: clamp(28px, 13.872px + 4.037vw, 72px);
  --page-head-title-ja-size: clamp(24px, 11.156px + 3.67vw, 64px);
  --page-head-title-ja-size-sm: clamp(20px, 1.5vw + 14px, 40px);

  /*letter spacing*/
  --ls-ja: 0.04em;
  --ls-en: 0;
  --ls-sm: 0.02em;
  --ls-md: 0.04em;
  --ls-lg: 0.06em;

  /*line-height*/
  --lh-lg: 2;
  --lh-md: 1.75;
  --lh-sm: 1.4;
  --lh-xs: 1.2;
  --lh-none: 1;

  /*font-weight*/
  --fw-regular: 400;
  --fw-semibold: 600;
  --fw-bold: 700;

  /*font-family*/
  --font-family-sans: "Noto Sans JP";
  --font-family-en: "Inter";
  --font-family-body: var(--font-family-en), var(--font-family-sans), sans-serif;
  --font-family-heading: var(--font-family-en), var(--font-family-sans), sans-serif;

  /* spacing */
  --spacing-inline-sm: 4px;
  --spacing-inline-md: 8px;
  --spacing-inline-lg: 12px;
  --spacing-item-sm: 16px;
  --spacing-item-md: 24px;
  --spacing-item-lg: 32px;
  --spacing-gap: 42px;
  --spacing-block-sm: 48px;
  --spacing-block-md: 80px;
  --spacing-block-lg: 120px;
  --spacing-section-md: 120px;
  --spacing-section-lg: 160px;
  --spacing-section-xl: 200px;
  --spacing-header-height: 116px;
  /* Subpage: offset below fixed header (alias for tuning / docs). */
  --page-shell-header-offset: var(--spacing-header-height);
  /* Space below fixed header before h1 on narrow viewports; override in :root to match Figma. */
  --page-head-padding-top-mobile: var(--spacing-block-md);

  /* color */
  --color-text-primary: var(--primitive-color-monotone-black);
  --color-text-secondary: var(--primitive-color-monotone-8);
  --color-text-inverse: var(--primitive-color-white);
  --color-link-default: var(--primitive-color-blue-3);
  --color-link-secondary: var(--primitive-color-blue-3);
  --color-link-hover: var(--primitive-color-monotone-5);
  --color-link-inverse-default: var(--primitive-color-monotone-4);
  --color-link-inverse-hover: var(--primitive-color-white);
  --color-bg-base: var(--primitive-color-white);
  --color-bg-subtle: var(--primitive-color-monotone-2);
  --color-bg-block: var(--primitive-color-monotone-3);
  --color-bg-inverse: var(--primitive-color-monotone-black);
  --color-border-default: var(--primitive-color-monotone-4);
  --color-border-strong: var(--primitive-color-monotone-black);
  --color-border-inverse: var(--primitive-color-monotone-9);
  --color-error: var(--primitive-color-red);
  --color-bg-error: var(--primitive-error-bg);
  --color-accent-primary: var(--primitive-color-blue-25);
  --color-tag-bg: var(--primitive-color-blue-11);
  --color-overlay-light: color-mix(in srgb, var(--primitive-color-black) 10%, transparent);

  /* section width */
  --max-width-compact: 890px;
  --max-width-narrow: 1124px;
  --max-width-default: 1440px;
  --min-width-default: 80vw;
  --container-gatter: 42px;

  /*icon*/
  --icon-size-sm: 16px;
  --icon-size-md: 20px;
  --icon-size-lg: 24px;
  --hover-icon-transform-value: var(--spacing-inline-sm);

  /*border-radius*/
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-full: 9999px;

  /*border*/
  --border-default: var(--underline-width) solid var(--color-border-default);
  --border-link: var(--underline-width) solid var(--color-link-default);
  --underline-width: 1px;

  /* shadow primitive */
  --shadow-dropdown: 0 var(--shadow-y-md) var(--shadow-blur-md) var(--shadow-color-base);
  --shadow-color-base: rgba(0, 0, 0, 0.05);
  --shadow-y-md: 10px;
  --shadow-blur-md: 20px;

  /* transition */
  --duration-hover: 0.4s;
  --ease-hover: ease-in-out;
}

@media (max-width: 1024px) {
  :root {
    /* font size */
    --font-size-md: var(--primitive-font-size-14);
    --font-size-sm: var(--primitive-font-size-12);
    --font-size-xs: var(--primitive-font-size-10);
    --font-size-lead: var(--primitive-font-size-18);
    --font-size-lead-fluid: clamp(18px, 2.5vw, 28px);
    --font-size-tag: var(--primitive-font-size-12);
    --font-size-heading-1: var(--primitive-font-size-38);
    --font-size-heading-2: var(--primitive-font-size-24);
    --font-size-heading-3: var(--primitive-font-size-22);
    --font-size-heading-4: var(--primitive-font-size-20);
    --font-size-heading-5: var(--primitive-font-size-18);
    --font-size-heading-6: var(--primitive-font-size-16);
    --font-size-heading-sm: var(--primitive-font-size-14);
    --font-size-navi-lg: var(--primitive-font-size-18);
    --font-size-navi-md: var(--primitive-font-size-16);
    --font-size-navi-sm: var(--primitive-font-size-14);
    --font-size-date: var(--primitive-font-size-14);
    --font-size-display-md: var(--primitive-font-size-26);
    --font-size-display-sm: var(--primitive-font-size-20);

    /* spacing */
    --spacing-inline-sm: 4px;
    --spacing-inline-md: 8px;
    --spacing-inline-lg: 10px;
    --spacing-item-sm: 12px;
    --spacing-item-md: 16px;
    --spacing-item-lg: 24px;
    --spacing-gap: 32px;
    --spacing-block-sm: 32px;
    --spacing-block-md: 40px;
    --spacing-block-lg: 80px;
    --spacing-section-md: 80px;
    --spacing-section-lg: 100px;
    --spacing-section-xl: 120px;
    /* Bar height = content row + notch inset (main padding must match). */
    --spacing-header-height: calc(64px + env(safe-area-inset-top, 0px));

    --container-gatter: 32px;
    /* SP page-head: top=section-md, bottom=block-md. */
    --page-head-padding-top-mobile: var(--spacing-section-md);
  }
}

:root {
  /*primitive*/
  --primitive-color-white: #ffffff;
  --primitive-color-black: #000000;
  --primitive-color-monotone-black: #17171a;
  --primitive-color-monotone-1: #fafafa;
  --primitive-color-monotone-2: #f5f5f5;
  --primitive-color-monotone-3: #eaeaea;
  --primitive-color-monotone-4: #d9d9d9;
  --primitive-color-monotone-5: #b4b4b4;
  --primitive-color-monotone-6: #8d8d8d;
  --primitive-color-monotone-7: #7a7a7a;
  --primitive-color-monotone-8: #656565;
  --primitive-color-monotone-9: #434343;
  --primitive-color-monotone-10: #363636;
  --primitive-color-red: #da563a;
  --primitive-error-bg: rgba(209, 69, 39, 0.1);
  --primitive-color-blue-3: #707386;
  --primitive-color-blue-4: #707598;
  --primitive-color-blue-11: #DDE8E9;
  --primitive-color-blue-25: #063F5B;
  --primitive-overlay-default: rgba(14, 13, 13, 0.4);
  --primitive-overlay-light: rgba(14, 13, 13, 0.1);

  --primitive-font-size-10: 10px;
  --primitive-font-size-12: 12px;
  --primitive-font-size-14: 14px;
  --primitive-font-size-16: 16px;
  --primitive-font-size-18: 18px;
  --primitive-font-size-20: 20px;
  --primitive-font-size-22: 22px;
  --primitive-font-size-24: 24px;
  --primitive-font-size-26: 26px;
  --primitive-font-size-28: 28px;
  --primitive-font-size-32: 32px;
  --primitive-font-size-34: 34px;
  --primitive-font-size-38: 38px;
  --primitive-font-size-40: 40px;
  --primitive-font-size-44: 44px;
  --primitive-font-size-48: 48px;
  --primitive-font-size-52: 52px;
  --primitive-font-size-56: 56px;
  --primitive-font-size-60: 60px;
  --primitive-font-size-64: 64px;
  --primitive-font-size-68: 68px;
  --primitive-font-size-72: 72px;
  --primitive-font-size-76: 76px;
  --primitive-font-size-80: 80px;

  --space-base: 8px;
  --space-1: calc(var(--space-base) * 1);
  --space-2: calc(var(--space-base) * 2);
  --space-3: calc(var(--space-base) * 3);
  --space-4: calc(var(--space-base) * 4);
  --space-5: calc(var(--space-base) * 5);
  --space-6: calc(var(--space-base) * 6);
  --space-7: calc(var(--space-base) * 7);
  --space-8: calc(var(--space-base) * 8);
  --space-9: calc(var(--space-base) * 9);
  --space-10: calc(var(--space-base) * 10);
  --space-11: calc(var(--space-base) * 11);
  --space-12: calc(var(--space-base) * 12);
  --space-15: calc(var(--space-base) * 15);
  --space-20: calc(var(--space-base) * 20);
}

:root {
  /* 4column navi*/
  --col-min: 220px;
  --col-max: 320px;
}

/* =========================================================
   2. Base Elements
   ========================================================= */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
  scrollbar-gutter: stable;
}

.c-scroll-reveal {
  --scroll-reveal-distance: 40px;
  --scroll-reveal-duration: 0.8s;
  --scroll-reveal-delay: 0.2s;
  --scroll-reveal-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

.js .c-scroll-reveal {
  opacity: 0;
  transform: translate3d(0, var(--scroll-reveal-distance), 0);
  transition:
    opacity var(--scroll-reveal-duration) var(--scroll-reveal-ease) var(--scroll-reveal-delay),
    transform var(--scroll-reveal-duration) var(--scroll-reveal-ease) var(--scroll-reveal-delay);
  will-change: opacity, transform;
}

.js .c-scroll-reveal.is-inview {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.c-scroll-reveal--delay-sm {
  --scroll-reveal-delay: 0.12s;
}

.c-scroll-reveal--delay-md {
  --scroll-reveal-delay: 0.2s;
}

body {
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  font-size: var(--font-size-md);
  font-family: var(--font-family-body);
  letter-spacing: var(--ls-md);
  line-height: var(--lh-md);
  overflow-x: hidden;
}

body.is-nav-open {
  overflow-x: hidden;
  overflow-y: scroll;
}

a {
  color: var(--color-link-default);
}

img {
  display: block;
  width: 100%;
}

@media (hover: hover) {
  a {
    color: var(--color-link-default);
  }

  a:hover {
    color: var(--color-link-hover);
  }
}

/* =========================================================
   3. Layout Primitives
   ========================================================= */
/* ---- section ---- */

.section {
  padding-top: var(--spacing-section-md);
  padding-bottom: var(--spacing-section-md);
}

/* Subpage body sections stacked under page-head: top block-md, bottom section-md. */
.section--rhythm {
  padding-top: var(--spacing-block-md);
  padding-bottom: var(--spacing-section-md);
}

.section__inner {
  width: min(var(--max-width-default), var(--min-width-default));
  margin: 0 auto;
}

.section__inner--narrow {
  max-width: var(--max-width-narrow);
}

.section__inner--compact {
  max-width: var(--max-width-compact);
}

.section__header {
  margin-bottom: var(--spacing-block-md);
}

.section__heading {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-heading-2);
}

.section__message-block,
.section__lead-block {
  display: grid;
  gap: var(--spacing-inline-lg);
  line-height: var(--lh-lg);
  letter-spacing: var(--ls-md);
  text-align: justify;
}

.section__message-block {
  font-size: var(--font-size-lead-fluid);
}

.section__lead-block {
  font-size: var(--font-size-lead);
  line-height: var(--lh-md);
  /* white-space: pre-wrap; */
}

.section__link {
  display: inline-flex;
  align-items: center;
  position: relative;
  margin-top: var(--spacing-block-md);
  margin-inline: auto;
  text-decoration: none;
  border-bottom: var(--border-link);
  padding-bottom: 4px;
}

@media (max-width: 720px) {

  .section__inner {
    /* width: min(100%, calc(100% - 24px)); */
    width: min(100%, calc(100% - (var(--container-gatter) * 2)));
  }

}

/* ---- page ---- */

.page {
  overflow-x: hidden;
}

/* Fixed header is out of flow; offset subpages so content clears the bar (home stays full-bleed). */
body:not(.is-home) main.page {
  padding-top: var(--page-shell-header-offset, var(--spacing-header-height));
}

/* Subpage / inner-page title band (h1) */
.page-head {
  padding-top: var(--spacing-section-md);
  padding-bottom: var(--spacing-section-md);
  background-color: var(--color-bg-base);
  overflow: clip;
}

.page-head__inner {
  width: min(var(--max-width-default), calc(100% - (var(--container-gatter) * 2)));
  margin-inline: auto;
}

/* Narrow inner width (same as page-head title band; reuse on body sections). */
.page-head__inner--narrow,
.l-content-inner--narrow {
  width: min(var(--max-width-narrow), calc(100% - (var(--container-gatter) * 2)));
  margin-inline: auto;
}

.page-head__title {
  margin: 0;
  color: var(--color-text-primary);
  max-width: 100%;
}

.page-head__title--en {
  font-family: var(--font-family-en), sans-serif;
  font-size: var(--page-head-title-en-size);
  font-weight: var(--fw-semibold);
  line-height: 1.25;
  letter-spacing: var(--ls-sm);
  white-space: nowrap;
}

.page-head__title--ja {
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--page-head-title-ja-size);
  font-weight: var(--fw-bold);
  line-height: 1.25;
  letter-spacing: var(--ls-sm);
  white-space: nowrap;
}

/* Smaller Japanese display title: use with .page-head__title--ja (font-size only; token follows :root breakpoints). */
.page-head__title--ja.page-head__title--display-sm {
  font-size: var(--page-head-title-ja-size-sm);
}

.page-head--title-nowrap .page-head__title--en {
  white-space: nowrap;
}

/* Tablet / phone: keep single-line titles and shrink with viewport before wrapping becomes necessary. */
@media (max-width: 1024px) {

  .page-head {
    overflow: visible;
  }

  /* SP page-head: top=section-md, bottom=block-md. */
  .page-head {
    padding-top: var(--spacing-section-md);
    padding-bottom: var(--spacing-block-md);
  }
}

/* Breadcrumb: wide inner (narrow pages add .l-content-inner--narrow on the same element). */
.breadcrumb {
  border-top: 1px solid var(--color-bg-block);
  padding: var(--spacing-item-sm) 0;
}

.breadcrumb__inner:not(.l-content-inner--narrow) {
  width: min(1440px, 90vw);
  margin-inline: auto;
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-inline-md);
  list-style: none;
  padding: 0;
  margin: 0;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-inline-sm);
  padding: var(--spacing-inline-md) 0;
}

.breadcrumb__link {
  padding: var(--spacing-inline-md);
  font-family: var(--font-family-en), sans-serif;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-regular);
  line-height: var(--lh-none);
  letter-spacing: var(--ls-sm);
  color: var(--color-link-hover);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb__link:hover {
  color: var(--color-link-default);
}

.breadcrumb__sep {
  display: inline-flex;
  width: 12px;
  height: 12px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.breadcrumb__sep img {
  width: 100%;
  height: 100%;
  display: block;
}

.breadcrumb__current {
  font-family: var(--font-family-en), sans-serif;
  font-size: var(--font-size-md);
  font-weight: var(--fw-regular);
  line-height: var(--lh-none);
  letter-spacing: var(--ls-sm);
  color: var(--color-text-primary);
}

@media (max-width: 720px) {
  .page-head {
    padding-top: var(--page-head-padding-top-mobile, var(--spacing-block-md));
    padding-bottom: var(--spacing-block-md);
  }

  /* Match header horizontal inset (padding-inline = one gutter each side). */
  .page-head__inner,
  .page-head__inner--narrow,
  .l-content-inner--narrow {
    width: min(100%, calc(100% - (var(--container-gatter) * 2)));
  }

  .breadcrumb__list {
    flex-wrap: wrap;
  }

  .breadcrumb__item {
    padding: var(--spacing-inline-sm) 0;
    gap: 0;
  }
}

/* =========================================================
   4. Components
   ========================================================= */
/* ---- text link button ---- */

.c-link-btn {
  --child-nav-link-underline-width: 0;
  position: relative;
  width: fit-content;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-item-sm);
  padding-block: var(--spacing-item-sm);
  padding-inline-end: var(--spacing-inline-sm);
  border-bottom: var(--border-link);
  color: var(--color-link-default);
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-navi-md);
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-md);
  line-height: var(--lh-none);
  text-decoration: none;
}

.c-link-btn::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block-end: calc(var(--underline-width) * -1);
  width: var(--child-nav-link-underline-width);
  height: var(--underline-width);
  background-color: var(--color-link-hover);
  transition: width var(--duration-hover) var(--ease-hover);
}

.c-link-btn:hover,
.c-link-btn.is-hover {
  --child-nav-link-underline-width: 100%;
  border-bottom-color: transparent;
}

.c-link-btn-icon {
  width: var(--icon-size-sm);
  height: var(--icon-size-sm);
  transition: transform var(--duration-hover) var(--ease-hover);
}

.c-link-btn:hover .c-link-btn-icon {
  transform: translateX(var(--hover-icon-transform-value));
}

.c-link-btn-effect {
  --child-nav-link-underline-width: 0;
  position: relative;
}

.c-link-btn-effect::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block-end: calc(var(--underline-width) * -1);
  width: var(--child-nav-link-underline-width);
  height: var(--underline-width);
  background-color: currentColor;
  transition: width var(--duration-hover) var(--ease-hover);
}

.c-link-btn-effect:hover,
.c-link-btn-effect.is-hover {
  --child-nav-link-underline-width: 100%;
  border-bottom-color: transparent;
}

.c-link-btn-effect .c-link-btn-icon,
.c-link-btn-effect .ir-home-text-link__icon,
.c-link-btn-effect .ir-lib-link__icon,
.c-link-btn-effect .irl-inline-link__icon,
.c-link-btn-effect .st-nav-link__icon,
.c-link-btn-effect .ir-related__chevron,
.c-link-btn-effect .about-related__chevron,
.c-link-btn-effect .child-nav-group__title-icon {
  transition: transform var(--duration-hover) var(--ease-hover);
}

.c-link-btn-effect:hover .c-link-btn-icon,
.c-link-btn-effect:hover .ir-home-text-link__icon,
.c-link-btn-effect:hover .ir-lib-link__icon,
.c-link-btn-effect:hover .irl-inline-link__icon,
.c-link-btn-effect:hover .st-nav-link__icon,
.c-link-btn-effect:hover .ir-related__chevron,
.c-link-btn-effect:hover .about-related__chevron,
.c-link-btn-effect:hover .child-nav-group__title-icon {
  transform: translateX(var(--hover-icon-transform-value));
}

.c-link-btn-effect-no-underline {
  position: relative;
}

.c-link-btn-effect-no-underline .ir-related__chevron,
.c-link-btn-effect-no-underline .about-related__chevron,
.c-link-btn-effect-no-underline .child-nav-group__title-icon {
  transition: transform var(--duration-hover) var(--ease-hover);
}

.c-link-btn-effect-no-underline:hover .ir-related__chevron,
.c-link-btn-effect-no-underline:hover .about-related__chevron,
.c-link-btn-effect-no-underline:hover .child-nav-group__title-icon {
  transform: translateX(var(--hover-icon-transform-value));
}

/* ---- news card ---- */

.c-news-list {
  display: grid;
  gap: 0;
}

.c-news-card {
  border-bottom: var(--border-default);
  padding: var(--spacing-item-md) 0;
  display: grid;
  grid-template-columns: 233px minmax(0, 1fr);
  gap: var(--spacing-inline-md);
  align-items: center;
  text-decoration: none;
}

.c-news-list>.c-news-card:first-child {
  border-top: var(--border-default);
}

.c-news-card__header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-item-sm);
}

.c-news-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-item-sm);
  align-items: center;
}

.c-news-card__date {
  font-size: var(--font-size-date);
  line-height: var(--lh-none);
  letter-spacing: var(--ls-lg);
  color: var(--color-link-default);
  transition: color var(--duration-hover) var(--ease-hover);
}

.c-news-card__tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-inline-sm) var(--spacing-inline-md);
  background: var(--color-tag-bg);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-tag);
  line-height: var(--lh-none);
  letter-spacing: var(--ls-lg);
  color: var(--color-text-secondary);
}

.c-news-card__body {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-item-md);
}

.c-news-card__icon-box {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.c-news-card__title {
  margin: 0;
  flex: 1;
  font-size: var(--font-size-md);
  color: var(--color-link-default);
  transition: color var(--duration-hover) var(--ease-hover);
}

.c-news-card__icon {
  width: var(--icon-size-md);
  height: var(--icon-size-md);
  flex-shrink: 0;
}

.c-news-card:hover .c-news-card__date,
.c-news-card:focus-visible .c-news-card__date,
.c-news-card:hover .c-news-card__title,
.c-news-card:focus-visible .c-news-card__title {
  color: var(--color-link-hover);
}

@media (max-width: 1080px) {
  .c-news-card {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (min-width: 1081px) {
  .c-news-card {
    position: relative;
    align-items: start;
    padding-right: calc(var(--icon-size-sm) + var(--spacing-item-md));
  }

  .c-news-card__title {
    align-self: start;
  }

  .c-news-card__icon-box {
    position: absolute;
    inset-inline-end: 0;
    inset-block-start: 50%;
    transform: translateY(-50%);
    align-self: center;
    justify-self: end;
  }
}

/* ---- dropdown select ---- */

.st-dropdown {
  position: relative;
  /* Equivalent to 307.5px based on font-size-base 16px */
  width: calc(var(--font-size-md) * 19.21875);
  max-width: 100%;
}

.st-dropdown__select {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  /* Equivalent to 53px base on font-size-base 16px */
  height: calc(var(--font-size-md) * 3.3125);
  background-color: var(--color-bg-base);
  /* 1px border */
  border: var(--border-default);
  /* 16px */
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  /* 12px */
  padding-top: var(--spacing-inline-lg);
  padding-bottom: var(--spacing-inline-lg);
  /* 16px */
  padding-left: var(--spacing-item-sm);
  padding-right: var(--spacing-item-sm);
  cursor: pointer;
  outline: none;
  letter-spacing: 0.04em;
  background-image: url('data:image/svg+xml;utf8,<svg width="20" height="12" viewBox="0 0 20 12" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M1 1L10 10L19 1" stroke="%23656565" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg>');
  background-repeat: no-repeat;
  /* Right 16px */
  background-position: right var(--spacing-item-sm) center;
  /* Width 12px, Height 8px */
  background-size: var(--spacing-inline-lg) var(--spacing-inline-md);
}

/* Modifier: Size Variants */
.st-dropdown__select--sm {
  /* 14px */
  font-size: var(--font-size-sm);
  /* 8px */
  padding-top: var(--spacing-inline-md);
  padding-bottom: var(--spacing-inline-md);
  /* 40px */
  height: calc(var(--font-size-md) * 2.5);
}

/* Modifier: Color Variants */
.st-dropdown__select--inverse {
  background-color: var(--color-text-primary);
  color: var(--color-bg-base);
  border-color: var(--color-text-primary);
}

/* ---- stock shared components ---- */

.st-section {
  overflow: hidden;
}

.st-section--white,
.st-section--note {
  background-color: var(--color-bg-base);
}

.st-section--gray {
  background-color: var(--color-bg-subtle);
}

.st-section__inner {
  width: min(1124px, calc(100% - 84px));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-block-md);
}

.st-section__heading {
  margin: 0;
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-heading-2);
  font-weight: var(--fw-regular);
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
}

.st-section__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-block-sm);
}

.st-section__content--compact {
  gap: var(--spacing-item-lg);
}

.st-section__desc {
  margin: 0;
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-md);
  font-weight: var(--fw-regular);
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: #000;
}

.st-table {
  width: 100%;
}

.st-table--profile {
  border-top: 1px solid var(--color-border-default);
}

.st-table__row {
  display: flex;
  align-items: stretch;
  border-right: 1px solid var(--color-border-default);
  border-bottom: 1px solid var(--color-border-default);
  border-left: 1px solid var(--color-border-default);
}

.st-table__label,
.st-table__desc,
.st-table__cell {
  padding: 8px 16px;
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-md);
  font-weight: var(--fw-regular);
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
}

.st-table__label {
  flex: 0 0 339px;
}

.st-table__desc {
  flex: 1 1 auto;
  border-left: 1px solid var(--color-border-default);
}

.st-table__desc p,
.st-table__cell p {
  margin: 0;
}

.st-table__link {
  color: var(--color-link-default);
  text-decoration: none;
  word-break: break-all;
}

.st-table__link:hover {
  text-decoration: underline;
}

.st-table-scroll {
  width: 100%;
  overflow-x: auto;
}

.st-table--capital {
  min-width: 890px;
  border-top: 1px solid var(--color-border-default);
}

.st-table--capital .st-table__row--header {
  background-color: var(--color-bg-block);
}

.st-table__cell {
  flex: 1 0 0;
  border-left: 1px solid var(--color-border-default);
}

.st-table__cell:first-child {
  border-left: none;
}

.st-table__cell--year {
  min-width: 180px;
}

.st-table__cell--amount,
.st-table__cell--shares {
  min-width: 190px;
}

.st-table__cell--note {
  flex: 0 0 33.33%;
  min-width: 330px;
  text-align: left;
}

.st-table__row--header .st-table__cell {
  text-align: center;
}

.st-table__row:not(.st-table__row--header) .st-table__cell--year,
.st-table__row:not(.st-table__row--header) .st-table__cell--note {
  text-align: left;
}

.st-table__cell--right {
  text-align: right;
}

/* Shared shell for file-link rows (padding + background). */
.file-link-shell {
  padding: var(--spacing-block-sm) var(--spacing-item-lg);
  background-color: var(--color-bg-block);
}

/* Stack multiple file links (e.g. stock articles). Combine with .file-link-shell on the same element. */
.file-link-block {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-item-lg);
}

.file-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-inline-lg);
  width: fit-content;
  text-decoration: none;
}

.file-link__icon {
  flex-shrink: 0;
  width: var(--icon-size-lg);
  height: var(--icon-size-lg);
}

.file-link__body {
  display: flex;
  align-items: center;
  gap: var(--spacing-inline-md);
}

.file-link__title {
  display: inline-flex;
  align-items: end;
  border-bottom: 1px solid transparent;
  font-size: var(--font-size-md);
  line-height: var(--lh-xs);
  color: var(--color-link-default);
}

.file-link__meta {
  font-size: var(--font-size-xs);
  font-weight: var(--fw-regular);
  line-height: var(--lh-xs);
  color: var(--color-link-default);
  white-space: nowrap;
}

.file-link:hover .file-link__title {
  border-bottom-color: var(--color-link-default);
}

.st-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-inline-md);
  width: min(425px, 100%);
  padding: 16px 4px 16px 0;
  border-bottom: 1px solid var(--color-link-default);
  color: var(--color-link-default);
  text-decoration: none;
}

.st-nav-link__text {
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-navi-lg);
  font-weight: var(--fw-regular);
  line-height: 1;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.st-nav-link__icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.st-note {
  display: flex;
  flex-direction: column;
  gap: 34px;
}

.st-note__disclaimer {
  margin: 0;
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-md);
  font-weight: var(--fw-regular);
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
}

.st-note__provider {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0;
}

.st-note__provider-text {
  margin: 0;
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-xs);
  font-weight: var(--fw-regular);
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
}

.st-note__provider-link {
  color: inherit;
}

.st-note__provider-logo {
  width: 100px;
  height: auto;
  max-width: 100px;
}

@media (max-width: 960px) {
  .st-section__inner {
    width: min(100%, calc(100% - (var(--container-gatter) * 2)));
    gap: var(--spacing-block-md);
  }

  .st-section__heading {
    font-size: var(--font-size-heading-2);
    letter-spacing: 0.04em;
  }

  .st-table--profile {
    border-top: none;
  }

  .st-table--profile .st-table__row {
    flex-direction: column;
    border-top: 1px solid var(--color-border-default);
  }

  .st-table__label,
  .st-table__desc {
    flex: none;
    width: 100%;
    padding: 8px 12px;
    font-size: var(--font-size-md);
    line-height: calc(25 / 14);
    min-height: 41px;
    box-sizing: border-box;
  }

  .st-table__label {
    background-color: var(--color-bg-block);
  }

  .st-table__desc {
    border-top: 1px solid var(--color-border-default);
    border-left: none;
  }

  .st-table-scroll {
    padding-bottom: 8px;
  }

  .st-table--capital {
    min-width: 712px;
  }

  .st-table--capital .st-table__cell {
    padding: var(--spacing-inline-sm) var(--spacing-inline-md);
    font-size: var(--font-size-md);
    line-height: 1.6;
  }

  .st-table--capital .st-table__cell--year {
    min-width: 118px;
  }

  .st-table--capital .st-table__cell--amount,
  .st-table--capital .st-table__cell--shares {
    min-width: 142px;
  }

  .st-table--capital .st-table__cell--note {
    min-width: 260px;
  }

  .file-link__body {
    flex-direction: column;
    align-items: flex-start;
    gap: 0px;
  }

  .file-link__title {
    font-size: var(--primitive-font-size-14);
  }

  .file-link__meta {
    font-size: var(--primitive-font-size-12);
  }

  .st-nav-link__text {
    font-size: var(--font-size-navi-md);
  }

  .st-note {
    gap: 40px;
  }

  .st-note__disclaimer {
    font-size: var(--font-size-md);
  }

  .st-note__provider {
    align-items: flex-end;
  }

  .st-note__provider-text {
    font-size: var(--primitive-font-size-12);
  }

  .st-note__provider-mark {
    width: 100px;
    font-size: 10px;
  }
}

@media (max-width: 720px) {
  .st-table-scroll {
    padding-bottom: var(--spacing-inline-md);
  }

  .st-table--capital {
    min-width: 624px;
  }

  .st-table--capital .st-table__cell {
    padding: var(--spacing-inline-sm) 6px;
    font-size: var(--font-size-md);
    line-height: 1.5;
    letter-spacing: var(--ls-sm);
  }

  .st-table--capital .st-table__cell--year {
    min-width: 98px;
  }

  .st-table--capital .st-table__cell--amount,
  .st-table--capital .st-table__cell--shares {
    min-width: 118px;
  }

  .st-table--capital .st-table__cell--note {
    min-width: 290px;
  }
}

/* ---- history ---- */

.history-table {
  border-top: var(--border-default);
}

.history-row {
  display: grid;
  grid-template-columns: 105px 1fr;
  gap: var(--spacing-gap);
  padding: var(--spacing-item-md) 0;
  border-bottom: var(--border-default);
  align-items: start;
}

@media (max-width: 1080px) {
  .history-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-inline-md);
  }
}

/* ---- policy document ---- */

.policy-doc {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.policy-doc__inner {
  display: flex;
  flex-direction: column;
}

.policy-doc__block {
  display: flex;
  flex-direction: column;
  gap: var(--space-3, 16px);
  width: 100%;
}

.policy-doc--site .policy-doc__inner {
  gap: var(--space-10, 80px);
}

.policy-doc--privacy .policy-doc__inner {
  gap: var(--spacing-block-md);
}

.policy-doc--privacy .policy-doc__heading-l {
  margin-bottom: var(--space-4, 24px);
}

.policy-doc__heading-l {
  margin: 0;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-heading-2);
  font-weight: var(--fw-regular);
  line-height: var(--lh-xs);
  letter-spacing: var(--ls-sm);
  color: #0e0e10;
}

.policy-doc__heading-m {
  margin: 0;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-heading-4);
  font-weight: var(--fw-regular);
  line-height: var(--lh-sm);
  letter-spacing: var(--ls-md);
  color: #000;
}

.policy-doc__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-8, 42px);
  width: 100%;
}

.policy-doc__text {
  margin: 0;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-md, 16px);
  font-weight: var(--fw-regular);
  line-height: 1.8;
  letter-spacing: var(--ls-md);
  color: #0e0e10;
}

.policy-doc__text a {
  color: var(--color-link-default);
  text-underline-offset: 0.15em;
}

.policy-doc__disc-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2, 8px);
  padding: 0;
  margin: 0;
}

.policy-doc__disc-item {
  list-style: disc;
  margin-left: var(--spacing-item-md);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-md, 16px);
  line-height: 1.8;
  letter-spacing: var(--ls-md);
  color: #0e0e10;
}

@media (max-width: 960px) {
  .policy-doc__content {
    gap: var(--spacing-block-md);
  }

  .policy-doc__text,
  .policy-doc__disc-item {
    font-size: var(--primitive-font-size-14);
    letter-spacing: var(--ls-md);
  }

  .policy-doc__disc-item {
    margin-left: 21px;
  }

  .policy-doc--site .policy-doc__heading-l {
    font-size: var(--font-size-heading-5);
    letter-spacing: var(--ls-md);
  }
}

@media (min-width: 721px) and (max-width: 1024px) {
  .policy-doc--privacy .policy-doc__heading-l {
    margin-bottom: 0;
  }
}

@media (max-width: 720px) {
  .policy-doc--privacy .policy-doc__heading-l {
    margin-bottom: 0;
    font-size: var(--font-size-heading-2);
    letter-spacing: var(--ls-md);
  }
}

/* =========================================================
   5. Global Areas
   ========================================================= */

/* ---- header ---- */

.header {
  --header-nav-item-color: var(--color-link-default);
  /* --header-logo-opacity: 1; */
  --header-logo-width: 200px;
  --header-logo-ratio-width: 212;
  --header-logo-ratio-height: 45;
  --header-bg: var(--color-bg-base);
  background-color: var(--header-bg);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background-color var(--duration-hover) var(--ease-hover);
}

.is-home {
  --header-bg: transparent;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width-default);
  height: var(--spacing-header-height);
  padding-inline: var(--container-gatter);
  margin-inline: auto;
}

.header--transparent {
  --header-nav-item-color: var(--color-text-inverse);
  --header-logo-opacity: 0;
  background-color: transparent;
}

.header--transparent .header-logo {
  visibility: hidden;
  opacity: 0;
}

.header-logo {
  width: var(--header-logo-width);
  color: inherit;
  text-decoration: none;
  transition: opacity var(--duration-hover) var(--ease-hover);
}

.header-logo__mark {
  position: relative;
  width: 100%;
  aspect-ratio: var(--header-logo-ratio-width) / var(--header-logo-ratio-height);
  overflow: clip;
  opacity: var(--header-logo-opacity);
}

.header-logo__image {
  width: 100%;
}

.header-menu-toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--header-nav-item-color);
  cursor: pointer;
  z-index: 130;
}

.header-menu-toggle__line {
  position: absolute;
  left: 50%;
  width: 20px;
  height: 2px;
  background-color: currentColor;
  transform: translateX(-50%);
  transition: top var(--duration-hover) var(--ease-hover),
    transform var(--duration-hover) var(--ease-hover),
    opacity var(--duration-hover) var(--ease-hover),
    background-color var(--duration-hover) var(--ease-hover);
}

.header-menu-toggle__line:nth-child(1) {
  top: 13px;
}

.header-menu-toggle__line:nth-child(2) {
  top: 19px;
}

.header-menu-toggle__line:nth-child(3) {
  top: 25px;
}

.sp-nav {
  display: none;
}

.header-nav-list {
  display: flex;
  align-items: center;
  /* gap: var(--spacing-item-md); */
  list-style: none;
}

.header-nav-list__item {
  position: static;
  margin-inline: var(--spacing-item-sm);
}

.header-nav-item {
  --header-nav-item-underline-width: 0;
  position: relative;
  padding-block: var(--spacing-inline-sm);
  padding-inline: var(--spacing-inline-md);
  font-size: var(--font-size-navi-lg);
  color: var(--header-nav-item-color);
}

.header-nav-item::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block-end: 0;
  width: var(--header-nav-item-underline-width);
  height: var(--underline-width);
  background-color: var(--header-nav-item-color);
  transition: width var(--duration-hover) var(--ease-hover),
    background-color var(--duration-hover) var(--ease-hover);
}

.header-nav-item:hover,
.header-nav-item.is-hover {
  --header-nav-item-color: var(--color-link-hover);
  --header-nav-item-underline-width: 100%;
}

.child-nav {
  position: absolute;
  left: 0;
  width: 100%;
  background-color: var(--color-bg-base);
  padding-block: var(--spacing-item-lg);
  box-shadow: var(--shadow-dropdown);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-15px);
  transition: opacity var(--duration-hover) var(--ease-hover),
    transform var(--duration-hover) var(--ease-hover),
    visibility var(--duration-hover) var(--ease-hover);
  top: var(--spacing-header-height);
}

.child-nav.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.child-nav__container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: var(--max-width-default);
  padding-inline: var(--container-gatter);
  margin-inline: auto;
}

.child-nav__title {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-item-sm);
  width: fit-content;
  font-family: var(--font-family-en), sans-serif;
  font-size: var(--font-size-heading-4);
  line-height: var(--lh-none);
}

.child-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-gap);
  padding: var(--spacing-block-sm) 0;
}

.ir .child-nav__list {
  padding-block: var(--spacing-item-lg);
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-gap) var(--spacing-block-sm);
  width: 100%;
}

.child-nav__list-item {
  min-width: var(--col-min);
}

.child-nav__link {
  width: 100%;
}

.child-nav__title-icon {
  width: var(--icon-size-sm);
  height: var(--icon-size-sm);
  transition: transform var(--duration-hover) var(--ease-hover);
}

.child-nav__title:hover .child-nav__title-icon {
  transform: translateX(var(--hover-icon-transform-value));
}

.header-nav-list__item:hover .child-nav {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.header-nav-list__item:focus-within .child-nav {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.child-nav-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-item-sm);
}

.child-nav-group__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--spacing-item-sm);
  border-bottom: var(--border-link);
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-navi-md);
  letter-spacing: var(--ls-md);
  line-height: var(--lh-md);
  text-decoration: none;
}

.child-nav-group__title-icon {
  width: var(--icon-size-sm);
  height: var(--icon-size-sm);
  transition: transform var(--duration-hover) var(--ease-hover);
}

.child-nav-group__title:hover .child-nav-group__title-icon {
  transform: translateX(var(--hover-icon-transform-value));
}

.child-nav-group__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-inline-sm);
  list-style: none;
}

.child-nav-group__link {
  color: var(--color-link-default);
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-md);
  line-height: var(--lh-xs);
  text-decoration: none;
  transition: color var(--duration-hover) var(--ease-hover);
}

.child-nav-group__link:hover {
  color: var(--color-link-hover);
}

/* ---- footer ---- */

.footer {
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  padding: var(--spacing-block-md) 0 var(--spacing-block-sm);
}

.footer__inner {
  width: min(1440px, 90vw);
  /* width: min(1440px, calc(100% - 40px)); */
  margin: 0 auto;
  padding-bottom: var(--spacing-block-sm);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-gap);
  flex-wrap: wrap;
}

.footer__logo-link {
  display: inline-block;
  text-decoration: none;
  color: inherit;
  line-height: 0;
}

.footer__logo {
  width: 200px;
  height: auto;
}

.footer__nav {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-block-md);
  align-items: flex-start;
}

.footer__nav-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-inline-md);
}

.footer__nav a,
.footer__utility a {
  color: var(--color-link-inverse-default);
  text-decoration: none;
}

.footer__nav a {
  font-size: var(--font-size-navi-lg);
  letter-spacing: var(--ls-lg);
}

.footer__utility a {
  font-size: var(--font-size-navi-sm);
}

.footer__nav a:hover,
.footer__utility a:hover {
  color: var(--color-link-inverse-hover);
}


.footer__bottom {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
  padding-top: var(--spacing-block-sm);
  border-top: 1px solid var(--color-border-inverse);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__utility {
  display: flex;
  gap: var(--spacing-item-lg);
  flex-wrap: wrap;
}

.footer__bottom p {
  font-size: var(--font-size-xs);
}

@media (max-width: 1024px) {

  /* Safe area + 64px row; total height must match --spacing-header-height for main offset. */
  .header {
    padding-top: env(safe-area-inset-top, 0px);
    --header-logo-width: 138px;
  }

  .header__inner {
    padding-inline: var(--spacing-item-sm);
    position: relative;
    z-index: 120;
  }

  .header-menu-toggle {
    display: block;
  }

  .l-header-nav {
    display: none;
  }

  .sp-nav {
    position: fixed;
    inset: 0;
    display: block;
    padding-top: var(--spacing-header-height);
    background-color: var(--color-bg-base);
    overflow-y: auto;
    z-index: 110;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-24px);
    transition: opacity 0.35s var(--ease-hover),
      transform 0.35s var(--ease-hover),
      visibility 0.35s var(--ease-hover);
  }

  .sp-nav__inner {
    width: min(80%, 420px);
    margin: 0 auto;
    padding-top: var(--spacing-block-md);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.35s var(--ease-hover),
      transform 0.35s var(--ease-hover);
  }

  .sp-nav__list,
  .sp-nav__child-list {
    list-style: none;
  }

  .sp-nav__list {
    display: grid;
    gap: var(--spacing-item-md);
  }

  .sp-nav__item {
    display: grid;
    gap: 0;
  }

  .sp-nav__item--has-children {
    gap: var(--spacing-item-sm);
  }

  .sp-nav__link {
    --sp-nav-link-underline-width: 0;
    position: relative;
    display: inline-block;
    padding-block: var(--spacing-inline-md);
    color: var(--color-link-default);
    font-family: var(--font-family-en), sans-serif;
    font-size: var(--font-size-navi-lg);
    font-weight: var(--fw-regular);
    letter-spacing: var(--ls-sm);
    line-height: var(--lh-none);
    text-decoration: none;
    border-bottom: var(--border-default);
  }

  .sp-nav__child-list {
    display: grid;
    gap: var(--spacing-item-sm);
    padding-inline-start: 32px;
  }

  .sp-nav__child-link {
    display: block;
    padding-block: var(--spacing-inline-md);
    color: var(--color-link-default);
    font-family: var(--font-family-sans), sans-serif;
    font-size: var(--font-size-navi-sm);
    font-weight: var(--fw-regular);
    letter-spacing: var(--ls-md);
    line-height: var(--lh-none);
    text-decoration: none;
  }

  .header.is-menu-open {
    --header-nav-item-color: var(--color-link-default);
    --header-logo-opacity: 1;
    background-color: var(--color-bg-base);
  }

  .header.is-menu-open .sp-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .header.is-menu-open .sp-nav__inner {
    opacity: 1;
    transform: translateY(0);
  }

  .header.is-menu-open .header-logo {
    visibility: visible;
    opacity: 1;
  }

  .header.is-menu-open .header-menu-toggle__line:nth-child(1) {
    top: 19px;
    transform: translateX(-50%) rotate(45deg);
  }

  .header.is-menu-open .header-menu-toggle__line:nth-child(2) {
    opacity: 0;
  }

  .header.is-menu-open .header-menu-toggle__line:nth-child(3) {
    top: 19px;
    transform: translateX(-50%) rotate(-45deg);
  }

  @media (max-height: 720px) {
    .sp-nav__inner {
      padding-top: var(--spacing-item-md);
    }

    .sp-nav__list {
      gap: var(--spacing-item-md);
    }

    .sp-nav__item--has-children,
    .sp-nav__child-list {
      gap: var(--spacing-inline-md);
    }
  }

  @media (max-height: 650px) {
    .sp-nav__inner {
      padding-top: var(--spacing-inline-md);
    }

    .sp-nav__list {
      gap: var(--spacing-item-sm);
    }

    .sp-nav__item--has-children,
    .sp-nav__child-list {
      gap: var(--spacing-inline-sm);
    }
  }

  @media (max-height: 580px) {
    .sp-nav__inner {
      padding-top: 0;
    }

    /* .sp-nav__list, */
    .sp-nav__item--has-children {
      gap: var(--spacing-inline-md);
    }

    .sp-nav__child-list {
      gap: 0;
    }
  }

  .footer {
    padding: 64px 0 32px;
  }

  .footer__inner,
  .footer__bottom {
    width: min(100%, calc(100% - var(--container-gatter) * 2));
  }

  .footer__inner {
    flex-direction: column;
    padding-bottom: 0;
  }

  .footer__nav {
    width: 100%;
    flex-direction: column;
    gap: var(--spacing-inline-md);
  }

  .footer__nav-col {
    width: 100%;
    gap: var(--spacing-inline-md);
  }

  .footer__nav a {
    display: block;
    padding-block: var(--spacing-inline-md);
    font-size: var(--font-size-navi-md);
    line-height: var(--lh-none);
    letter-spacing: var(--ls-sm);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-block-sm);
    margin-top: var(--spacing-block-sm);
  }

  .footer__utility {
    width: 100%;
    display: grid;
    gap: 0;
  }

  .footer__utility a {
    padding-block: var(--spacing-inline-md);
    letter-spacing: var(--ls-lg);
  }
}

/* ---- ir related navigation ---- */

.ir-related,
.about-related {
  background-color: var(--color-bg-subtle);
  padding-top: var(--spacing-block-md);
  padding-bottom: var(--spacing-block-md);
}

.ir-related__inner,
.about-related__inner {
  width: min(1356px, calc(100% - (var(--container-gatter) * 2)));
  margin-inline: auto;
}


.ir-related__title,
.about-related__title {
  margin-bottom: 0;
}

.ir-related__top-link,
.about-related__top-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-item-sm);
  text-decoration: none;
}

.ir-related__top-text,
.about-related__top-text {
  font-family: var(--font-family-en), sans-serif;
  font-size: var(--font-size-heading-4);
  font-weight: var(--fw-regular);
  line-height: 1.4;
  letter-spacing: 0;
  white-space: nowrap;
}

.ir-related__grid {
  display: grid;
  gap: var(--spacing-gap);
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: var(--spacing-block-sm) 0;
}

.ir-related__group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-item-sm);
  min-width: 0;
}

.ir-related__group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-item-sm);
  padding: var(--spacing-item-sm) 4px var(--spacing-item-sm) 0;
  border-bottom: 1px solid var(--color-link-default);
  color: var(--color-link-default);
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-heading-sm);
  font-weight: var(--fw-bold);
  line-height: 1.8;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.ir-related__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-inline-sm);
}

.ir-related__link,
.about-related__link {
  color: var(--color-link-default);
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-md);
  font-weight: var(--fw-regular);
  line-height: 1.8;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.ir-related__link {
  font-size: var(--font-size-sm);
}

.ir-related__chevron,
.about-related__chevron {
  display: inline-flex;
  width: 16px;
  height: 16px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ir-related__chevron img,
.about-related__chevron img {
  width: 100%;
  height: 100%;
  display: block;
}

.about-related__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-gap);
  padding: var(--spacing-block-sm) 0;
}

.about-related__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-inline-sm);
  width: 307px;
  padding: var(--spacing-item-sm) var(--spacing-inline-sm) var(--spacing-item-sm) 0;
  border-bottom: 1px solid var(--color-link-default);
}

.about-related__link-text {
  font-family: var(--font-family-sans), sans-serif;
  font-size: var(--font-size-navi-lg);
  font-weight: var(--fw-regular);
  line-height: 1;
  letter-spacing: 0.04em;
}

.ir-related--policy .ir-related__grid {
  padding-bottom: 0;
}

@media (max-width: 960px) {

  .ir-related__inner,
  .about-related__inner {
    width: min(var(--max-width-default), var(--min-width-default));
  }

  .ir-related__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-item-sm);
  }

  .ir-related__link {
    font-size: var(--font-size-navi-md);
  }

  .ir-related__top-text,
  .about-related__top-text {
    font-size: var(--font-size-heading-2);
  }

  .ir-related__group-title {
    font-size: var(--font-size-heading-sm);
  }

  .ir-related__links {
    gap: var(--spacing-inline-md);
  }

  .about-related__link-text {
    font-size: var(--font-size-navi-lg);
  }

  .ir-related--policy {
    padding-bottom: var(--spacing-block-md);
  }

  .ir-related--policy .ir-related__grid {
    gap: var(--spacing-inline-md);
    padding-top: var(--spacing-item-md);
  }

  .ir-related--policy .ir-related__group {
    gap: var(--spacing-inline-md);
  }

  .ir-related--policy .ir-related__group-title {
    padding: var(--spacing-item-md) 4px var(--spacing-item-md) 0;
    font-size: var(--font-size-md);
  }

  .ir-related--policy .ir-related__links {
    gap: var(--spacing-inline-md);
    padding-top: var(--spacing-inline-md);
  }

  .ir-related--policy .ir-related__link {
    font-size: var(--primitive-font-size-16);
    line-height: 1.8;
    letter-spacing: 0.06em;
  }

  .ir-related__group--compact .ir-related__links {
    display: none;
  }
}


/* =========================================================
   6. Utilities
   ========================================================= */

/* ---- utility ---- */

.mobile-break {
  display: none;
}

.u-font-en {
  font-family: var(--font-family-en);
  letter-spacing: var(--ls-en);
}

.u-keep-line {
  display: inline-block;
}

.u-sp-note {
  display: none;
  font-size: var(--font-size-xs);
}

@media (max-width: 720px) {
  .u-sp-note {
    display: block;
  }
}