:root {
  --ink: #17110d;
  --ink-soft: #45372e;
  --paper: #f8f4ec;
  --paper-deep: #eee5d6;
  --white: #fffdf8;
  --line: rgba(23, 17, 13, 0.16);
  --burgundy: #4b1118;
  --gold: #a98748;
  --brown: #2a1b13;
  --shadow: 0 24px 70px rgba(23, 17, 13, 0.12);
  --serif-ja: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --serif-en: "Cormorant Garamond", Georgia, serif;
  --sans: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--serif-ja);
  line-height: 1.9;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.28em;
}

button {
  font: inherit;
}

::selection {
  color: var(--white);
  background: var(--burgundy);
}

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

.skip-link:focus {
  z-index: 1000;
  top: 1rem;
  left: 1rem;
  width: auto;
  height: auto;
  padding: 0.7rem 1rem;
  margin: 0;
  clip: auto;
  color: var(--white);
  background: var(--ink);
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 76px;
  padding: 1rem clamp(1.25rem, 4vw, 3.5rem);
  color: var(--white);
  transition: background-color 220ms ease, color 220ms ease, border-color 220ms ease;
  border-bottom: 1px solid rgba(255, 253, 248, 0.16);
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--ink);
  background: rgba(248, 244, 236, 0.96);
  border-bottom-color: var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid currentColor;
  font-size: 1.05rem;
  line-height: 1;
}

.brand-ja,
.brand-en {
  display: block;
}

.brand-ja {
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  line-height: 1.35;
}

.brand-en {
  font-family: var(--serif-en);
  font-size: 0.82rem;
  line-height: 1.2;
  opacity: 0.78;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 2vw, 1.7rem);
  font-family: var(--serif-en), var(--serif-ja);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.site-nav a {
  position: relative;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.35rem;
  left: 0;
  height: 1px;
  content: "";
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  color: inherit;
  background: transparent;
  border: 1px solid currentColor;
}

.nav-toggle-line,
.nav-toggle-line::before,
.nav-toggle-line::after {
  display: block;
  width: 18px;
  height: 1px;
  content: "";
  background: currentColor;
}

.nav-toggle-line::before {
  transform: translateY(-6px);
}

.nav-toggle-line::after {
  transform: translateY(5px);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  place-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}

.hero-image,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
}

.hero-scrim {
  background: rgba(12, 8, 5, 0.52);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(980px, calc(100% - 2rem));
  padding: 22vh 0 16vh;
  text-align: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold);
  font-family: var(--serif-en), var(--serif-ja);
  font-size: clamp(0.78rem, 1.3vw, 0.92rem);
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(3.1rem, 8vw, 7rem);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.16;
  white-space: nowrap;
}

.hero-lead {
  margin: 1.8rem 0 0;
  font-size: clamp(1.35rem, 2.7vw, 2.35rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.85;
}

.hero-company {
  margin: 2.5rem 0 0;
  font-family: var(--serif-en);
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  letter-spacing: 0.08em;
}

.scroll-cue {
  position: absolute;
  z-index: 2;
  right: clamp(1.25rem, 4vw, 3.5rem);
  bottom: 2rem;
  font-family: var(--serif-en);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  writing-mode: vertical-rl;
  opacity: 0.76;
}

.container {
  width: min(1160px, calc(100% - clamp(2rem, 7vw, 7rem)));
  margin: 0 auto;
}

.section {
  padding: clamp(5.5rem, 10vw, 9rem) 0;
}

.section:nth-of-type(odd) {
  background: var(--white);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: start;
}

.section-heading {
  max-width: 620px;
}

.section-heading.narrow {
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
}

h2,
h3,
p {
  overflow-wrap: anywhere;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4.4vw, 4rem);
  font-weight: 500;
  line-height: 1.55;
}

h3 {
  margin: 0;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 600;
  line-height: 1.55;
}

.section-heading p:not(.eyebrow),
.prose p,
.statement-card p,
.principle p,
.flow-item p,
.contact-panel p {
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: clamp(0.98rem, 1.35vw, 1.06rem);
  line-height: 2.15;
}

.prose p {
  margin: 0 0 1.5rem;
}

.prose p:last-child {
  margin-bottom: 0;
}

.intro {
  border-bottom: 1px solid var(--line);
}

.statement {
  color: var(--white);
  background: var(--brown);
}

.statement-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 253, 248, 0.18);
  border: 1px solid rgba(255, 253, 248, 0.18);
}

.statement-card {
  min-height: 430px;
  padding: clamp(2rem, 5vw, 4rem);
  background: var(--brown);
}

.statement-card p {
  max-width: 560px;
  color: rgba(255, 253, 248, 0.78);
}

.statement-card h2 {
  font-size: clamp(1.9rem, 3.8vw, 3.5rem);
}

.principles,
.owner-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: clamp(2.5rem, 5vw, 4.5rem);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.principle,
.flow-item {
  min-height: 300px;
  padding: clamp(1.6rem, 3vw, 2.5rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.38);
}

.principle span,
.flow-item span {
  display: block;
  margin-bottom: 3rem;
  color: var(--burgundy);
  font-family: var(--serif-en), var(--serif-ja);
  font-size: 0.9rem;
}

.why {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.succession {
  background: var(--white);
}

.owner-flow {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.flow-item {
  background: var(--paper);
}

.industry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  padding: 0;
  margin: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.industry-list li {
  min-height: 92px;
  padding: 1.35rem;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.45);
}

.ai {
  color: var(--white);
  background: var(--burgundy);
}

.ai .prose p,
.ai .section-heading p:not(.eyebrow) {
  color: rgba(255, 253, 248, 0.82);
}

.message {
  background: var(--paper-deep);
}

.message-body {
  max-width: 920px;
  margin: 0 auto;
}

blockquote {
  margin: clamp(2rem, 5vw, 4rem) 0 0;
  padding: 0;
}

blockquote p {
  margin: 0 0 1.5rem;
  font-size: clamp(1.35rem, 2.6vw, 2.25rem);
  line-height: 1.95;
}

.signature {
  margin: 3rem 0 0;
  color: var(--ink-soft);
  text-align: right;
}

.company-table {
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-table div {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 1.5rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.company-table dt {
  color: var(--burgundy);
  font-size: 0.9rem;
}

.company-table dd {
  margin: 0;
  font-family: var(--sans);
  line-height: 2;
}

.contact {
  padding-bottom: clamp(6rem, 10vw, 10rem);
}

.contact-panel {
  max-width: 860px;
  padding-top: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--ink);
}

.contact-panel h2 {
  margin-bottom: 1.25rem;
}

.text-link {
  display: inline-block;
  margin-top: 1.2rem;
  color: var(--burgundy);
  font-family: var(--serif-en);
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  text-decoration-color: var(--gold);
}

.site-footer {
  color: var(--white);
  background: var(--ink);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 1rem;
  align-items: center;
  min-height: 130px;
  font-size: 0.9rem;
}

.footer-inner p {
  margin: 0;
}

.footer-inner p:nth-child(2),
.footer-inner small {
  font-family: var(--serif-en);
  letter-spacing: 0.04em;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 0.5rem clamp(1.25rem, 4vw, 3.5rem) 1.3rem;
    color: var(--ink);
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    visibility: hidden;
    opacity: 0;
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .site-header.is-open .site-nav {
    transform: translateY(0);
    visibility: visible;
    opacity: 1;
  }

  .site-nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
  }

  .two-column,
  .statement-grid {
    grid-template-columns: 1fr;
  }

  .principles,
  .owner-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    grid-template-columns: 1fr;
    padding-block: 2rem;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 68px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-ja {
    font-size: 0.82rem;
  }

  .brand-en {
    font-size: 0.72rem;
  }

  .hero-content {
    padding: 18vh 0 13vh;
  }

  .hero h1 {
    font-size: clamp(2.85rem, 13.4vw, 3.55rem);
  }

  .hero-lead {
    font-size: 1.35rem;
  }

  .scroll-cue {
    display: none;
  }

  .section {
    padding: 4.5rem 0;
  }

  .principles,
  .owner-flow,
  .industry-list {
    grid-template-columns: 1fr;
  }

  .statement-card,
  .principle,
  .flow-item {
    min-height: auto;
  }

  .company-table div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}