:root {
  --paper: #f4f3ef;
  --ink: #141512;
  --moss: #435044;
  --line: rgba(20, 21, 18, .22);
  --pad: clamp(20px, 4vw, 64px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif; font-size: 17px; line-height: 1.85; letter-spacing: .015em; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
.site-header { height: 82px; padding: 0 var(--pad); display: grid; grid-template-columns: minmax(140px, 1fr) auto minmax(140px, 1fr); align-items: center; border-bottom: 1px solid var(--line); position: relative; z-index: 10; }
.brand { font-size: 1.8rem; font-weight: 600; letter-spacing: -.06em; line-height: 1; }
.brand span { font-size: .5rem; margin-left: 3px; vertical-align: top; letter-spacing: 0; }
nav { display: flex; align-items: center; justify-self: center; gap: clamp(20px, 2.6vw, 42px); font-size: .82rem; letter-spacing: .05em; white-space: nowrap; }
.header-actions { justify-self: end; display: flex; align-items: center; gap: 24px; }
.language-switch { display: flex; align-items: center; gap: 7px; font-size: .82rem; letter-spacing: .08em; }
.lang-button { border: 0; padding: 5px 0; background: transparent; color: #777a73; font: inherit; cursor: pointer; }
.lang-button.active { color: var(--ink); border-bottom: 1px solid; }
nav a { position: relative; }
nav a:not(.nav-contact)::after { content: ""; position: absolute; left: 0; bottom: -4px; width: 100%; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .3s; }
nav a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-contact { border: 1px solid currentColor; border-radius: 999px; padding: 9px 18px; }
.menu-button { display: none; border: 0; background: none; font: inherit; }
.hero { padding: clamp(64px, 8vw, 118px) var(--pad) var(--pad); }
.hero-copy { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(260px, .58fr); column-gap: clamp(40px, 7vw, 120px); row-gap: 26px; align-items: start; margin-bottom: clamp(52px, 7vw, 90px); }
.eyebrow, .small-label { grid-column: 1 / -1; margin: 0; font-size: .82rem; letter-spacing: .13em; }
h1, h2, h3, p { margin-top: 0; }
h1 { grid-row: 2 / 4; margin-bottom: 0; font-weight: 500; font-size: clamp(2.75rem, 5vw, 5.7rem); line-height: 1.18; letter-spacing: -.045em; }
.hero-lead { max-width: 32rem; margin: 8px 0 0; font-size: 1.05rem; line-height: 1.9; }
.text-link { grid-column: 2; justify-self: start; border-bottom: 1px solid; font-size: .85rem; letter-spacing: .05em; padding-bottom: 5px; }
.hero-image { margin: 0; }
.hero-image img { height: min(62vw, 760px); object-fit: cover; filter: grayscale(1); }
.hero-image figcaption { margin-top: 12px; text-align: right; font-size: .78rem; letter-spacing: .08em; }
.section-grid { display: grid; grid-template-columns: minmax(180px, .38fr) minmax(0, 1.62fr); gap: clamp(36px, 6vw, 100px); }
.section-label { font-size: .82rem; letter-spacing: .1em; white-space: nowrap; }
.section-label span:first-child { display: inline-block; min-width: 3rem; color: #777a73; }
.intro { margin: 0 var(--pad); padding: clamp(90px, 11vw, 160px) 0; border-bottom: 1px solid var(--line); }
.intro h2, .section-head h2, .contact h2 { font-size: clamp(2rem, 3.4vw, 4rem); font-weight: 500; line-height: 1.35; letter-spacing: -.035em; }
.intro-copy p { max-width: 43rem; margin: 42px 0 0; font-size: 1.08rem; line-height: 2; }
.services, .process { padding: clamp(100px, 13vw, 180px) var(--pad); }
.section-head { margin-bottom: clamp(60px, 8vw, 110px); align-items: baseline; }
.section-head h2 { margin: 0; }
.service { display: grid; grid-template-columns: minmax(80px, .25fr) minmax(270px, .65fr) minmax(300px, .9fr); gap: 3vw; padding: 44px 0; border-top: 1px solid var(--line); }
.service:last-child { border-bottom: 1px solid var(--line); }
.service-number { color: #777a73; font-size: .85rem; }
.service h3 { font-size: clamp(1.45rem, 2vw, 2.35rem); font-weight: 500; letter-spacing: -.025em; line-height: 1.3; margin-bottom: 8px; }
.service-jp { font-size: .88rem; letter-spacing: .05em; }
.service > p:last-child { max-width: 38rem; margin: 0; font-size: 1rem; }
.process-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.process-list li { min-height: 250px; padding: 24px 24px 32px 0; border-bottom: 1px solid var(--line); }
.process-list li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.process-list span { display: block; color: #777a73; font-size: .82rem; margin-bottom: 52px; }
.process-list strong { display: block; font-size: 1.15rem; font-weight: 600; margin-bottom: 14px; }
.process-list p { margin: 0; max-width: 16rem; font-size: .96rem; }
.contact { min-height: 85vh; background: var(--moss); color: var(--paper); padding: var(--pad); display: grid; grid-template-columns: minmax(160px, .52fr) minmax(0, 1.48fr); gap: 5vw; align-content: center; }
.contact-copy p { max-width: 36rem; font-size: 1.05rem; }
.contact-button { display: inline-flex; justify-content: space-between; align-items: center; width: min(100%, 420px); margin-top: 46px; padding: 18px 0; border-top: 1px solid currentColor; border-bottom: 1px solid currentColor; font-size: .86rem; letter-spacing: .08em; }
footer { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 30px; padding: 70px var(--pad) 32px; background: var(--moss); color: var(--paper); border-top: 1px solid rgba(244,243,239,.35); font-size: .78rem; letter-spacing: .06em; }
footer p { margin: 0; }
.footer-brand { font-size: 2.5rem; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .75s ease, transform .75s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } }
@media (max-width: 900px) {
  .site-header { height: 70px; grid-template-columns: 1fr auto; }
  .menu-button { display: block; }
  nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 28px var(--pad); flex-direction: column; align-items: flex-start; gap: 22px; }
  nav.open { display: flex; }
  .hero { padding-top: 64px; }
  .hero-copy, .section-grid, .contact { grid-template-columns: 1fr; }
  .hero-copy { gap: 24px; }
  .eyebrow { grid-column: auto; order: -1; }
  h1 { grid-row: auto; }
  .text-link { grid-column: auto; margin-top: 4px; }
  .hero-image img { height: auto; object-fit: contain; }
  .section-label { margin-bottom: 36px; }
  .intro-copy p { margin: 30px 0 0; }
  .service { grid-template-columns: 48px 1fr; gap: 20px; }
  .service > p:last-child { grid-column: 2; }
  .process-list { grid-template-columns: 1fr 1fr; }
  .process-list li:nth-child(3) { border-left: 0; }
  .contact { min-height: 720px; align-content: start; padding-top: 90px; }
  footer { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; line-height: 1.8; }
  h1 { font-size: clamp(2.45rem, 11vw, 3.6rem); line-height: 1.22; }
  .hero-lead { font-size: 1rem; }
  .hero-image { margin-inline: calc(var(--pad) * -1); }
  .hero-image img { width: 100%; height: auto; }
  .hero-image figcaption { padding-inline: var(--pad); }
  .service { grid-template-columns: 36px 1fr; padding: 34px 0; }
  .process-list { grid-template-columns: 1fr; }
  .process-list li, .process-list li + li { border-left: 0; padding: 24px 0; min-height: 0; }
  .process-list span { margin-bottom: 35px; }
  footer { grid-template-columns: 1fr; gap: 18px; }
}