:root {
  --ink: #21171b;
  --coral: #f06f68;
  --coral-soft: #ffa69c;
  --paper: #fff7f1;
  --line-dark: rgba(33, 23, 27, 0.18);
  --line-light: rgba(255, 247, 241, 0.2);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(1240px, calc(100% - 64px)); margin-inline: auto; }

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid var(--line-light);
}
.header-inner { height: 88px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 13px; font-family: Arial, Helvetica, sans-serif; }
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--coral);
  color: white;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: -0.04em;
  transform: rotate(-3deg);
}
.brand-mark span { transform: rotate(3deg); }
.brand-name { font-size: 13px; font-weight: 700; letter-spacing: 0.17em; }
.global-nav { display: flex; gap: 36px; font-size: 13px; font-weight: 600; }
.global-nav a { position: relative; padding-block: 8px; }
.global-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 1px;
  background: var(--paper);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}
.global-nav a:hover::after, .global-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }

.hero { position: relative; min-height: 820px; height: 100svh; overflow: hidden; background: var(--ink); }
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.55;
  background-image: linear-gradient(var(--line-light) 1px, transparent 1px), linear-gradient(90deg, var(--line-light) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: linear-gradient(to right, transparent 1%, black 42%, black 100%);
}
.hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: 0;
  right: -7vw;
  width: 53vw;
  height: 100%;
  background: var(--coral);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
}
.hero-orbit { position: absolute; z-index: 1; border: 1px solid rgba(255,255,255,0.34); border-radius: 50%; }
.orbit-one { width: 620px; height: 620px; right: -70px; top: 78px; }
.orbit-two { width: 940px; height: 940px; right: -230px; top: -85px; }
.hero-inner {
  position: relative;
  z-index: 2;
  height: 100%;
  display: grid;
  grid-template-columns: 48% 52%;
  align-items: center;
  padding-top: 84px;
}
.hero-copy { padding-top: 26px; }
.eyebrow, .section-label, .art-kicker, .service-en, .footer-kicker {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 31px;
  color: rgba(244,240,231,0.74);
  letter-spacing: 0.11em;
}
.eyebrow span { width: 32px; height: 2px; background: var(--coral); }
.hero h1 { margin: 0; font-size: clamp(78px, 8.2vw, 138px); font-weight: 700; line-height: 0.94; letter-spacing: -0.085em; }
.hero h1 em { color: var(--coral-soft); font-style: normal; }
.hero-lead { margin: 40px 0 0; color: rgba(244,240,231,0.82); font-size: 17px; font-weight: 500; line-height: 1.85; letter-spacing: 0.07em; }
.mobile-break { display: none; }
.primary-link {
  width: 214px;
  margin-top: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(244,240,231,0.58);
  padding: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  transition: width 180ms ease, color 180ms ease;
}
.primary-link:hover, .primary-link:focus-visible { width: 232px; color: var(--coral-soft); }
.link-arrow { font-size: 18px; }
.hero-art {
  position: relative;
  min-height: 525px;
  margin-left: 8%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: 17%;
  font-family: Arial, Helvetica, sans-serif;
}
.art-kicker { margin: 0 0 28px; color: rgba(255,255,255,0.68); }
.forward-word { display: flex; flex-direction: column; color: white; font-size: clamp(74px, 8.7vw, 144px); font-weight: 800; line-height: 0.7; letter-spacing: -0.09em; }
.forward-word span { margin-bottom: 20px; color: var(--ink); font-size: 0.3em; letter-spacing: 0.08em; }
.forward-word strong { white-space: nowrap; }
.forward-word strong:last-child { margin-left: 0.16em; color: var(--ink); font-size: 0.78em; }
.art-meta { display: flex; gap: 18px; margin-top: 54px; color: rgba(255,255,255,0.68); font-size: 9px; letter-spacing: 0.12em; }
.hero-footer {
  position: absolute;
  z-index: 3;
  right: 0;
  bottom: 28px;
  left: 0;
  display: flex;
  justify-content: space-between;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: rgba(244,240,231,0.54);
}

.section-dark { background: var(--ink); }
.section-light { background: var(--paper); color: var(--ink); }
.intro { padding: 154px 0 164px; }
.intro-grid, .about-grid { display: grid; grid-template-columns: 26% 74%; }
.section-label { margin: 8px 0 0; color: var(--coral-soft); }
.dark-label { color: var(--coral); }
.philosophy-quote {
  margin: 0 0 24px;
  color: var(--coral-soft);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(24px, 3vw, 42px);
  font-style: italic;
  letter-spacing: -0.02em;
}
.intro h2 { max-width: 920px; margin: 0; font-size: clamp(38px, 5vw, 72px); font-weight: 600; line-height: 1.42; letter-spacing: -0.045em; }
.intro-copy {
  max-width: 710px;
  margin: 58px 0 0 auto;
  padding-left: 60px;
  border-left: 1px solid var(--line-light);
  color: rgba(244,240,231,0.68);
  font-size: 15px;
  line-height: 2.15;
  letter-spacing: 0.045em;
}
.intro-copy p { margin: 0; }
.intro-copy p + p { margin-top: 22px; }

.services { padding: 138px 0 154px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; padding-bottom: 44px; border-bottom: 1px solid var(--line-dark); }
.section-heading h2, .about-heading h2 { margin: 17px 0 0; font-size: clamp(44px, 5vw, 72px); font-weight: 650; letter-spacing: -0.055em; }
.section-index { margin: 0; font-family: Arial, Helvetica, sans-serif; font-size: 12px; font-weight: 700; letter-spacing: 0.14em; }
.service-list { display: grid; grid-template-columns: repeat(3, 1fr); }
.service-card {
  min-height: 420px;
  padding: 34px 32px 38px;
  border-right: 1px solid var(--line-dark);
  transition: color 220ms ease, background 220ms ease, transform 220ms ease;
}
.service-card:first-child { border-left: 1px solid var(--line-dark); }
.service-card:hover { z-index: 1; background: var(--coral); color: white; transform: translateY(-8px); }
.service-topline { display: flex; justify-content: space-between; align-items: center; }
.service-number, .service-arrow { font-family: Arial, Helvetica, sans-serif; font-weight: 700; }
.service-number { font-size: 12px; }
.service-arrow { font-size: 23px; }
.service-en { margin: 98px 0 18px; color: var(--coral); transition: color 220ms ease; }
.service-card:hover .service-en { color: rgba(255,255,255,0.72); }
.service-card h3 { min-height: 74px; margin: 0; font-size: 25px; font-weight: 650; line-height: 1.42; letter-spacing: -0.025em; }
.service-description {
  margin: 34px 0 0;
  padding-top: 25px;
  border-top: 1px solid currentColor;
  color: rgba(33,23,27,0.64);
  font-size: 13px;
  line-height: 1.9;
  transition: color 220ms ease;
}
.service-card:hover .service-description { color: rgba(255,255,255,0.82); }

.statement { position: relative; overflow: hidden; padding: 174px 0 166px; background: var(--coral); }
.statement::before {
  content: "";
  position: absolute;
  width: 720px;
  height: 720px;
  right: -260px;
  bottom: -420px;
  border: 1px solid rgba(255,255,255,0.38);
  border-radius: 50%;
  box-shadow: 0 0 0 130px rgba(255,255,255,0.05), 0 0 0 260px rgba(255,255,255,0.04);
}
.statement-track {
  position: absolute;
  top: 42px;
  left: -18px;
  display: flex;
  gap: 24px;
  align-items: center;
  white-space: nowrap;
  color: rgba(255,255,255,0.12);
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(66px, 9vw, 148px);
  font-weight: 800;
  letter-spacing: -0.06em;
}
.statement-track i { font-style: normal; font-weight: 400; }
.statement-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 26% 74%; padding-top: 84px; }
.statement .section-label { color: rgba(255,255,255,0.68); }
.statement-copy { margin: 0; color: white; font-size: clamp(31px, 4.2vw, 60px); font-weight: 650; line-height: 1.58; letter-spacing: -0.04em; }

.about { padding: 148px 0 160px; }
.about-heading { padding-right: 40px; }
.company-data { margin: 0; border-top: 1px solid var(--line-dark); }
.company-data > div { display: grid; grid-template-columns: 26% 74%; padding: 30px 0; border-bottom: 1px solid var(--line-dark); }
.company-data dt { color: rgba(33,23,27,0.52); font-size: 12px; font-weight: 600; }
.company-data dd { margin: 0; font-size: 15px; font-weight: 500; line-height: 2; }

.site-footer { background: var(--ink); padding: 104px 0 34px; }
.footer-main { display: flex; justify-content: space-between; align-items: flex-end; padding-bottom: 70px; border-bottom: 1px solid var(--line-light); }
.footer-kicker { margin: 0 0 18px; color: var(--coral-soft); }
.footer-logo { margin: 0; font-family: Arial, Helvetica, sans-serif; font-size: clamp(52px, 9vw, 128px); font-weight: 800; line-height: 0.9; letter-spacing: -0.075em; }
.back-to-top { width: 170px; display: flex; justify-content: space-between; padding-bottom: 13px; border-bottom: 1px solid var(--line-light); font-size: 12px; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 25px; color: rgba(244,240,231,0.5); font-size: 10px; font-weight: 600; letter-spacing: 0.08em; }

@media (max-width: 900px) {
  .shell { width: min(100% - 40px, 680px); }
  .hero { min-height: 780px; }
  .hero::after { top: auto; right: -12%; bottom: 0; width: 76%; height: 46%; clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%); }
  .hero-inner { grid-template-columns: 1fr; align-content: center; padding: 120px 0 60px; }
  .hero-copy { align-self: end; }
  .hero h1 { font-size: clamp(70px, 17vw, 118px); }
  .hero-art { min-height: 250px; margin: 0; align-self: end; align-items: flex-end; padding: 28px 8% 0 0; }
  .forward-word { font-size: clamp(65px, 17vw, 104px); }
  .forward-word span, .art-kicker, .art-meta { display: none; }
  .intro-grid, .about-grid, .statement-inner { grid-template-columns: 1fr; gap: 48px; }
  .intro-copy { margin-left: 0; }
  .service-list { grid-template-columns: 1fr; }
  .service-card, .service-card:first-child { min-height: 0; padding: 32px 0 38px; border-right: 0; border-left: 0; border-bottom: 1px solid var(--line-dark); }
  .service-card:hover { padding-inline: 24px; }
  .service-en { margin-top: 58px; }
  .service-card h3 { min-height: 0; }
}

@media (max-width: 600px) {
  .shell { width: calc(100% - 40px); }
  .header-inner { height: 72px; }
  .global-nav { gap: 18px; font-size: 11px; }
  .brand-name { display: none; }
  .hero { min-height: 730px; }
  .hero-grid { background-size: 64px 64px; }
  .hero-inner { padding-top: 98px; }
  .eyebrow { margin-bottom: 24px; }
  .hero h1 { font-size: clamp(66px, 21vw, 94px); }
  .hero-lead { margin-top: 28px; font-size: 14px; }
  .mobile-break { display: block; }
  .primary-link { margin-top: 30px; }
  .hero-art { min-height: 180px; padding-top: 18px; }
  .hero-footer { bottom: 18px; }
  .intro, .services, .about { padding: 100px 0 108px; }
  .intro-grid, .about-grid, .statement-inner { gap: 36px; }
  .intro h2 { font-size: 34px; line-height: 1.48; }
  .intro-copy { margin-top: 38px; padding-left: 24px; font-size: 14px; }
  .section-heading h2, .about-heading h2 { font-size: 42px; }
  .service-card:hover { padding-inline: 18px; }
  .statement { padding: 128px 0 112px; }
  .statement-track { top: 30px; font-size: 62px; }
  .statement-inner { padding-top: 52px; }
  .statement-copy { font-size: 29px; }
  .company-data > div { grid-template-columns: 1fr; gap: 12px; }
  .site-footer { padding-top: 78px; }
  .footer-main { display: block; }
  .footer-logo { font-size: 15.2vw; }
  .back-to-top { margin-top: 54px; }
  .footer-bottom { display: block; line-height: 1.9; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}