:root {
  --ink: #11110f;
  --black: #080807;
  --black-soft: #171714;
  --ivory: #f4f0e7;
  --paper: #fbfaf7;
  --white: #ffffff;
  --gold: #bea064;
  --gold-light: #d8c392;
  --text: #22221f;
  --muted: #77736b;
  --dark-muted: #aaa69d;
  --line: #ded7c8;
  --dark-line: rgba(216, 195, 146, 0.2);
  --serif: Georgia, "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: var(--ivory); font-family: var(--sans); line-height: 1.9; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin-top: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto minmax(150px, 1fr);
  align-items: center;
  min-height: 76px;
  padding: 0 clamp(24px, 5vw, 72px);
  color: var(--white);
  background: rgba(17, 17, 15, 0.96);
  border-bottom: 1px solid var(--dark-line);
  backdrop-filter: blur(12px);
}

.brand { display: inline-flex; align-items: center; gap: 14px; justify-self: start; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 700;
  background: var(--gold);
}
.brand-copy { display: grid; line-height: 1.2; }
.brand-copy strong { font-size: 0.94rem; letter-spacing: 0.18em; }
.brand-copy small { margin-top: 5px; color: var(--dark-muted); font-size: 0.62rem; letter-spacing: 0.14em; }
.global-nav { display: flex; gap: clamp(22px, 3vw, 42px); font-size: 0.8rem; font-weight: 700; }
.global-nav a { padding: 28px 0 24px; border-bottom: 2px solid transparent; transition: color 0.22s, border-color 0.22s; }
.global-nav a:hover { color: var(--gold-light); border-color: var(--gold); }
.header-contact {
  justify-self: end;
  padding: 12px 24px;
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  border: 1px solid rgba(190, 160, 100, 0.65);
  transition: color 0.22s, background 0.22s;
}
.header-contact:hover { color: var(--ink); background: var(--gold); }

.dark-grid {
  background-color: var(--black);
  background-image:
    linear-gradient(rgba(216, 195, 146, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(216, 195, 146, 0.045) 1px, transparent 1px);
  background-size: 118px 118px;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(370px, 0.82fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(92px, 12vw, 148px) clamp(24px, 6vw, 88px) 116px;
  color: var(--white);
  overflow: hidden;
}
.hero-copy, .hero-panel { position: relative; z-index: 2; }
.eyebrow { margin-bottom: 26px; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.24em; }
.eyebrow.light { color: var(--gold-light); }
.eyebrow.light span { display: inline-block; width: 56px; height: 1px; margin: 0 16px 4px 0; background: var(--gold); }
.eyebrow.gold { color: #9f8047; }
.hero h1 {
  max-width: 720px;
  margin-bottom: 34px;
  color: var(--white);
  font-family: var(--serif);
  font-size: clamp(3.2rem, 5.4vw, 5.5rem);
  font-weight: 500;
  line-height: 1.22;
}
.hero-lead { max-width: 650px; margin-bottom: 38px; color: #b8b5ae; font-size: 0.98rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 176px;
  min-height: 56px;
  padding: 12px 24px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  transition: color 0.22s, background 0.22s, border-color 0.22s, transform 0.22s;
}
.button:hover { transform: translateY(-2px); }
.button-gold { color: var(--ink); background: var(--gold); border: 1px solid var(--gold); }
.button-gold:hover { background: var(--gold-light); }
.button-outline { color: var(--gold-light); border: 1px solid rgba(190, 160, 100, 0.65); }
.button-outline:hover { color: var(--ink); background: var(--gold); }

.hero-panel { padding: 14px; border: 1px solid var(--dark-line); }
.hero-panel::before { content: ""; position: absolute; inset: 12px; pointer-events: none; border: 1px solid rgba(216, 195, 146, 0.11); }
.hero-panel > * { position: relative; z-index: 1; }
.panel-label { margin: 24px 24px 14px; color: var(--gold-light); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.2em; }
.hero-panel h2 { margin: 0 24px 28px; color: var(--white); font-family: var(--serif); font-size: clamp(1.45rem, 2.2vw, 2.05rem); font-weight: 500; }
.hero-panel ol { padding: 0 24px 16px; margin: 0; list-style: none; }
.hero-panel li { display: grid; grid-template-columns: 54px 1fr; gap: 20px; align-items: start; padding: 25px 0; border-top: 1px solid var(--dark-line); }
.hero-panel li > span { color: var(--gold-light); font-family: var(--serif); font-size: 1rem; }
.hero-panel strong, .hero-panel small { display: block; }
.hero-panel strong { margin-bottom: 5px; color: var(--white); font-size: 0.95rem; }
.hero-panel small { color: #77746f; font-size: 0.72rem; }
.hero-watermark {
  position: absolute;
  right: -1vw;
  bottom: -62px;
  z-index: 0;
  color: rgba(255, 255, 255, 0.027);
  font-family: var(--serif);
  font-size: clamp(6rem, 14vw, 13rem);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.section { position: relative; padding: clamp(88px, 10vw, 136px) clamp(24px, 6vw, 88px); }
.section-ivory { background: var(--ivory); }
.section-light { background: var(--paper); }
.section-heading { margin-bottom: 54px; }
.section-heading h2 {
  margin-bottom: 20px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(2.7rem, 4.5vw, 4.7rem);
  font-weight: 500;
  line-height: 1.22;
}
.section-heading > p:last-child { max-width: 720px; color: var(--muted); }
.split-heading { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(360px, 1fr); gap: clamp(48px, 9vw, 130px); align-items: end; }
.split-heading > p { margin-bottom: 8px; }

.approach-frame { padding: clamp(24px, 4vw, 54px); border: 1px solid var(--line); background: rgba(255,255,255,0.3); }
.approach-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--line); }
.approach-grid article { min-height: 292px; padding: 34px; background: rgba(255,255,255,0.72); border-right: 1px solid var(--line); }
.approach-grid article:last-child { border-right: 0; }
.approach-grid article > span { display: block; margin-bottom: 40px; color: #a8894e; font-family: var(--serif); font-size: 1.5rem; }
.approach-grid h3 { margin-bottom: 17px; color: var(--ink); font-size: 1.15rem; line-height: 1.45; }
.approach-grid h3 em { display: block; margin-bottom: 3px; font-family: var(--serif); font-size: 1.35rem; font-style: normal; }
.approach-grid p { color: var(--muted); font-size: 0.9rem; }
.approach-summary { margin: 28px 0 0; padding: 25px 30px; color: #d3cec4; background: var(--black); border-left: 3px solid var(--gold); font-size: 0.9rem; }

.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.service-card { position: relative; min-height: 440px; padding: 34px; background: var(--white); border: 1px solid var(--line); transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s; }
.service-card:hover { transform: translateY(-5px); border-color: var(--gold); box-shadow: 0 18px 38px rgba(40, 32, 18, 0.08); }
.card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 72px; }
.card-top span { color: #a8894e; font-family: var(--serif); font-size: 1.55rem; }
.card-top small { color: var(--muted); font-size: 0.64rem; font-weight: 800; letter-spacing: 0.16em; }
.service-card h3 { margin-bottom: 18px; color: var(--ink); font-family: var(--serif); font-size: 1.75rem; font-weight: 500; }
.service-card p { color: var(--muted); font-size: 0.88rem; }
.service-card ul { padding: 20px 0 0; margin: 24px 0 0; list-style: none; border-top: 1px solid var(--line); }
.service-card li { position: relative; padding: 6px 0 6px 17px; color: #59564f; font-size: 0.78rem; }
.service-card li::before { content: ""; position: absolute; left: 0; top: 16px; width: 6px; height: 1px; background: var(--gold); }

.section-dark { color: var(--white); overflow: hidden; }
.strength-layout { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1fr); gap: clamp(60px, 10vw, 140px); }
.dark-heading h2 { color: var(--white); }
.dark-heading > p:last-child { color: var(--dark-muted); }
.strength-list { border-top: 1px solid var(--dark-line); }
.strength-list article { display: grid; grid-template-columns: 70px 1fr; gap: 24px; padding: 34px 0; border-bottom: 1px solid var(--dark-line); }
.strength-list article > span { color: var(--gold-light); font-family: var(--serif); font-size: 1rem; }
.strength-list h3 { margin-bottom: 8px; color: var(--white); font-family: var(--serif); font-size: 1.65rem; font-weight: 500; }
.strength-list p { margin-bottom: 0; color: var(--dark-muted); font-size: 0.88rem; }
.section-watermark { position: absolute; left: 3vw; bottom: -38px; z-index: 0; color: rgba(255,255,255,0.025); font-family: var(--serif); font-size: clamp(8rem, 19vw, 18rem); font-weight: 700; line-height: 1; }

.process-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-list li { position: relative; min-height: 190px; padding: 30px 24px; border-right: 1px solid var(--line); }
.process-list li:last-child { border-right: 0; }
.process-list li:not(:last-child)::after { content: ""; position: absolute; top: 50%; right: -5px; z-index: 2; width: 8px; height: 8px; background: var(--gold); transform: rotate(45deg); }
.process-list span { display: block; margin-bottom: 54px; color: #a8894e; font-family: var(--serif); font-size: 1.15rem; }
.process-list p { margin-bottom: 0; color: var(--ink); font-size: 0.83rem; font-weight: 700; line-height: 1.65; }

.contact-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(330px, 0.5fr); gap: 70px; align-items: end; padding: clamp(88px, 10vw, 128px) clamp(24px, 6vw, 88px); color: var(--white); }
.contact-section h2 { margin-bottom: 24px; font-family: var(--serif); font-size: clamp(2.8rem, 4.6vw, 4.8rem); font-weight: 500; line-height: 1.24; }
.contact-section > div > p:last-child { max-width: 640px; color: var(--dark-muted); }
.contact-box { position: relative; display: grid; min-height: 180px; padding: 32px; color: var(--white); border: 1px solid rgba(190,160,100,0.5); transition: color 0.22s, background 0.22s; }
.contact-box span { color: var(--dark-muted); font-size: 0.76rem; }
.contact-box strong { align-self: end; color: var(--gold-light); font-family: var(--serif); font-size: 1.9rem; letter-spacing: 0.08em; }
.contact-box i { position: absolute; right: 28px; bottom: 28px; color: var(--gold); font-size: 1.35rem; font-style: normal; }
.contact-box:hover { color: var(--ink); background: var(--gold); }
.contact-box:hover span, .contact-box:hover strong, .contact-box:hover i { color: var(--ink); }

.footer { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 34px clamp(24px, 6vw, 88px); color: var(--white); background: var(--black-soft); border-top: 1px solid var(--dark-line); }
.footer > small { color: #77746f; font-size: 0.68rem; }
.footer-brand .brand-mark { width: 36px; height: 36px; font-size: 1.2rem; }

@media (max-width: 1020px) {
  .site-header { grid-template-columns: 1fr auto; }
  .global-nav { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { max-width: 780px; }
  .hero-panel { max-width: 700px; }
  .approach-grid, .service-grid { grid-template-columns: 1fr; }
  .approach-grid article { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .approach-grid article:last-child { border-bottom: 0; }
  .card-top { margin-bottom: 42px; }
  .service-card { min-height: auto; }
  .strength-layout { grid-template-columns: 1fr; gap: 20px; }
  .process-list { grid-template-columns: repeat(3, 1fr); }
  .process-list li { border-bottom: 1px solid var(--line); }
  .contact-section { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .site-header { min-height: 66px; padding: 0 18px; }
  .brand-mark { width: 34px; height: 34px; font-size: 1.15rem; }
  .brand-copy strong { font-size: 0.76rem; }
  .brand-copy small { font-size: 0.5rem; }
  .header-contact { padding: 9px 12px; font-size: 0.66rem; }
  .hero { min-height: auto; padding: 74px 20px 82px; }
  .hero h1 { font-size: 2.42rem; line-height: 1.34; }
  .hero-lead { font-size: 0.9rem; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-panel { padding: 8px; }
  .panel-label, .hero-panel h2 { margin-left: 17px; margin-right: 17px; }
  .hero-panel ol { padding-left: 17px; padding-right: 17px; }
  .hero-panel li { grid-template-columns: 42px 1fr; gap: 12px; }
  .section { padding: 72px 20px; }
  .section-heading h2 { font-size: clamp(2.35rem, 11vw, 3.4rem); }
  .split-heading { grid-template-columns: 1fr; gap: 18px; }
  .approach-frame { padding: 12px; }
  .approach-grid article, .service-card { padding: 26px; }
  .strength-list article { grid-template-columns: 48px 1fr; gap: 10px; }
  .process-list { grid-template-columns: 1fr; }
  .process-list li { min-height: auto; border-right: 0; }
  .process-list li:not(:last-child)::after { top: auto; right: 24px; bottom: -5px; }
  .process-list span { margin-bottom: 24px; }
  .contact-section { padding: 72px 20px; }
  .contact-section h2 { font-size: clamp(2.4rem, 11vw, 3.5rem); }
  .footer { align-items: flex-start; flex-direction: column; padding: 28px 20px; }
}

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