:root {
  --bg: #f4f1eb;
  --surface: #fffdf9;
  --ink: #171717;
  --muted: #625d55;
  --quiet: #8a8378;
  --line: #d8d1c6;
  --line-strong: #b9b1a5;
  --max: 1180px;
  --font-latin: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-ja: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, "Noto Sans JP", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-latin);
  text-rendering: optimizeLegibility;
}

html[lang="ja"] body {
  font-family: var(--font-ja);
  font-feature-settings: "palt" 1;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 24px;
  padding: 18px max(24px, calc((100vw - var(--max)) / 2));
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  height: 30px;
  margin-right: auto;
}

.brand img {
  display: block;
  width: auto;
  height: 30px;
}

.nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  position: relative;
}

.language-icon {
  width: 18px;
  height: 18px;
  color: var(--quiet);
}

.language-icon circle,
.language-icon path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.language-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 560;
  cursor: pointer;
}

.language-trigger:focus {
  outline: 0;
}

.language-trigger:focus-visible {
  box-shadow: 0 1px 0 var(--line-strong);
}

.language-caret {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--quiet);
}

.language-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 20;
  display: grid;
  min-width: 128px;
  padding: 4px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 94%, white);
  box-shadow: 0 16px 34px color-mix(in srgb, var(--ink) 10%, transparent);
}

.language-menu[hidden] {
  display: none;
}

.language-menu-option {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  align-items: center;
  width: 100%;
  padding: 8px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.language-menu-option span {
  color: var(--ink);
  font-size: 12px;
  font-weight: 620;
}

.language-menu-option small {
  font-size: 12px;
}

.language-menu-option:hover,
.language-menu-option:focus-visible,
.language-menu-option[aria-selected="true"] {
  background: color-mix(in srgb, var(--line) 32%, transparent);
  outline: 0;
}

.menu-toggle,
.menu-button {
  display: none;
}

.nav a:hover,
.contact a:hover {
  color: var(--ink);
}

.section-pad {
  max-width: var(--max);
  margin: 0 auto;
  padding: 96px 24px;
  border-bottom: 1px solid var(--line);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  gap: 42px;
  align-items: center;
  min-height: calc(100svh - 58px);
  padding-top: 74px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--quiet);
  font-size: 12px;
  font-weight: 560;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(48px, 8vw, 104px);
  font-weight: 520;
  line-height: .9;
  text-wrap: balance;
}

html[lang="ja"] h1 {
  max-width: 840px;
  font-size: clamp(46px, 6.2vw, 82px);
  line-height: .98;
  line-break: strict;
  overflow-wrap: normal;
  word-break: auto-phrase;
}

html[lang="ja"] h2 {
  line-height: 1.06;
  line-break: strict;
  overflow-wrap: normal;
  word-break: auto-phrase;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 4.6vw, 64px);
  font-weight: 520;
  line-height: .96;
  text-wrap: balance;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  font-weight: 560;
  line-height: 1.2;
}

p {
  color: var(--muted);
  line-height: 1.6;
}

.lead {
  max-width: 600px;
  margin-bottom: 34px;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--ink);
  font-size: 14px;
}

.button.primary {
  background: var(--ink);
  color: var(--surface);
}

.button.secondary {
  color: var(--ink);
}

.hero-media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
}

.hero-media img {
  width: 100%;
  min-height: 560px;
  object-fit: cover;
}

.signal-strip {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-top: 30px;
}

.signal-strip div {
  border-top: 1px solid var(--line-strong);
  padding-top: 14px;
}

.signal-strip span,
.criteria-grid span,
.process-list span {
  display: block;
  margin-bottom: 8px;
  color: var(--quiet);
  font-size: 12px;
}

.signal-strip strong {
  font-size: clamp(18px, 2.3vw, 27px);
  font-weight: 520;
}

.split-section,
.insight,
.founders,
.contact {
  display: grid;
  grid-template-columns: minmax(260px, 420px) minmax(0, 1fr);
  gap: 84px;
}

.insight {
  align-items: center;
}

.insight .section-body {
  transform: translateY(18px);
}

.split-section {
  align-items: center;
}

.image-section {
  grid-template-columns: minmax(250px, 390px) minmax(0, 1fr);
}

.image-section .section-media {
  grid-column: 1 / -1;
}

.image-section-reverse .section-media {
  grid-row: 1 / 2;
  grid-column: 1 / -1;
}

.insight.image-section {
  grid-template-columns: minmax(380px, 520px) minmax(0, 1fr);
}

.split-section.image-section {
  grid-template-columns: minmax(420px, 560px) minmax(0, 1fr);
}

.section-media,
.approach-media {
  margin: 18px 0 0;
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
}

.section-media img,
.approach-media img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

.section-media img {
  aspect-ratio: 16 / 7;
}

.approach-visual .section-heading {
  display: block;
  max-width: 760px;
  margin-bottom: 36px;
}

.approach-visual .section-heading h2 {
  max-width: 760px;
}

.approach-visual .section-heading p {
  max-width: 560px;
}

.approach-media {
  margin: -8px 0 44px;
}

.approach-media img {
  aspect-ratio: 16 / 6;
}

.section-body {
  max-width: 660px;
}

.section-body p {
  font-size: 20px;
  line-height: 1.55;
}

.inline-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.inline-list li {
  border-top: 1px solid var(--line-strong);
  padding-top: 12px;
  color: var(--ink);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 44px;
}

.section-heading p {
  max-width: 620px;
  margin-top: 20px;
  font-size: 20px;
}

.criteria-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.criteria-grid article {
  min-height: 210px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 58%, transparent);
}

.criteria-grid p {
  margin-bottom: 0;
}

.approach {
  background: var(--surface);
  max-width: none;
  padding-left: max(24px, calc((100vw - var(--max)) / 2));
  padding-right: max(24px, calc((100vw - var(--max)) / 2));
}

.process-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.process-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  min-height: 188px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.founder-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.founder-grid article {
  border-top: 1px solid var(--line-strong);
  padding-top: 16px;
}

.founder-grid > p {
  grid-column: 1 / -1;
  max-width: 680px;
  margin: 18px 0 0;
  font-size: 20px;
}

html[lang="ja"] .founders h2 {
  font-size: clamp(38px, 3.6vw, 50px);
  line-height: 1.08;
}

html[lang="ja"] .insight h2 {
  font-size: clamp(40px, 3.8vw, 52px);
  line-height: 1.1;
}

.contact {
  align-items: end;
  border-bottom: 0;
  grid-template-columns: minmax(0, 760px) minmax(220px, 1fr);
  gap: 56px;
}

.contact h2 {
  max-width: 780px;
  font-size: clamp(34px, 5vw, 62px);
}

.contact-description {
  max-width: 620px;
  margin: 24px 0 0;
  font-size: 20px;
}

address {
  display: grid;
  gap: 12px;
  color: var(--muted);
  font-style: normal;
  font-size: 18px;
}

address a {
  width: fit-content;
  border-bottom: 1px solid currentColor;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font-size: 13px;
}

@media (max-width: 900px) {
  .site-header {
    position: sticky;
    align-items: center;
    flex-wrap: wrap;
    padding: 16px 24px;
  }

  .nav {
    display: none;
    flex-basis: 100%;
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 14px;
    background: var(--bg);
    font-size: 16px;
  }

  .nav a {
    display: block;
    padding: 14px 0;
    border-top: 1px solid var(--line);
  }

  .menu-toggle {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    opacity: 0;
    pointer-events: none;
  }

  .menu-button {
    display: inline-grid;
    place-items: center;
    width: 44px;
    height: 44px;
    margin-left: 0;
    cursor: pointer;
  }

  .menu-button span {
    display: block;
    width: 24px;
    height: 1px;
    background: var(--ink);
    transition: transform .18s ease;
  }

  .menu-button span + span {
    margin-top: 7px;
  }

  .menu-toggle:checked ~ .menu-button span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-toggle:checked ~ .menu-button span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .menu-toggle:checked ~ .nav {
    display: grid;
  }

  .section-pad {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .language-switch {
    margin-left: 0;
  }

  .hero,
  .split-section,
  .insight,
  .founders,
  .contact {
    display: block;
    min-height: 0;
  }

  .hero-media {
    margin-top: 42px;
  }

  .hero-media img {
    min-height: 360px;
  }

  .signal-strip,
  .criteria-grid,
  .process-list,
  .founder-grid,
  .inline-list {
    grid-template-columns: 1fr;
  }

  .image-section .section-media,
  .image-section-reverse .section-media {
    grid-column: auto;
    grid-row: auto;
    margin-top: 34px;
  }

  .section-media img,
  .approach-media img {
    aspect-ratio: 4 / 3;
    max-height: none;
  }

  .approach-media {
    margin: 34px 0 36px;
  }

  .section-body,
  .founder-grid,
  address {
    margin-top: 34px;
  }

  .insight .section-body {
    transform: none;
  }

  .criteria-grid,
  .process-list {
    border-left: 0;
  }

  .criteria-grid article,
  .process-list li {
    border-left: 0;
    border-right: 0;
  }
}

@media (max-width: 560px) {
  .site-header {
    gap: 10px;
    padding: 16px 18px;
  }

  .nav {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section-pad {
    padding-left: 18px;
    padding-right: 18px;
  }

  h1 {
    font-size: 48px;
  }

  html[lang="ja"] h1 {
    font-size: 44px;
    line-height: 1.02;
  }

  .contact h2 {
    font-size: 34px;
    line-height: 1;
  }

  .contact-description {
    font-size: 18px;
  }

  .lead,
  .section-body p,
  .section-heading p,
  .founder-grid > p {
    font-size: 18px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .process-list li {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 22px 0;
  }

  .site-footer {
    display: grid;
    gap: 8px;
  }
}