:root {
  --ink: #17201d;
  --muted: #69736f;
  --paper: #f5f3ee;
  --surface: #ebe8e0;
  --accent: #315f54;
  --line: rgba(23, 32, 29, 0.16);
  --white: #fff;
  --max-width: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  padding: 20px max(5vw, calc((100vw - var(--max-width)) / 2));
  background: rgba(245, 243, 238, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.25;
}

.brand-name {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
}

.brand-title {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: clamp(16px, 2.4vw, 34px);
}

.site-nav a,
.site-footer a {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-footer a:hover,
.site-footer a:focus-visible { color: var(--accent); }

.menu-toggle { display: none; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(220px, 1fr);
  gap: clamp(50px, 8vw, 120px);
  min-height: calc(100vh - 88px);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(90px, 14vh, 160px) 0 70px;
  align-items: end;
}

.hero-content { align-self: center; }

.eyebrow,
.section-number,
.card-index {
  margin: 0 0 24px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

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

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  line-height: 1.05;
}

h1 {
  max-width: 900px;
  margin-bottom: 32px;
  font-size: clamp(3.25rem, 7.7vw, 7.2rem);
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2.2rem, 4vw, 4rem);
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 18px;
  font-size: 1.65rem;
}

.hero-copy {
  max-width: 690px;
  margin-bottom: 40px;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  padding: 14px 22px;
  text-decoration: none;
}

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

.button-primary:hover,
.button-primary:focus-visible { background: var(--accent); }

.text-link {
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}

.hero-note {
  display: grid;
  gap: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

.section {
  display: grid;
  grid-template-columns: minmax(210px, 1fr) minmax(0, 3fr);
  gap: clamp(50px, 8vw, 120px);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(90px, 12vw, 160px) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.section-content {
  max-width: 820px;
  font-size: 1.05rem;
}

.section-content > p:not(.lead) {
  max-width: 690px;
  color: var(--muted);
}

.lead {
  margin-bottom: 30px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 3.4vw, 3.2rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: none;
}

.expertise-card {
  min-height: 320px;
  padding: 28px;
  border: 1px solid var(--line);
}

.expertise-card + .expertise-card { border-left: 0; }

.expertise-card p:last-child {
  color: var(--muted);
  font-size: 0.95rem;
}

.card-index { margin-bottom: 70px; }

.section-aesthetic {
  background: var(--surface);
  box-shadow: 50vw 0 var(--surface), -50vw 0 var(--surface);
  border-top: 0;
}

.aesthetic-list {
  margin-top: 50px;
  border-top: 1px solid var(--line);
}

.aesthetic-list article {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.aesthetic-list span {
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.aesthetic-list h3 {
  margin: 0;
  font-size: clamp(1.4rem, 2.3vw, 2rem);
}

.section-research {
  color: var(--paper);
  background: var(--ink);
  box-shadow: 50vw 0 var(--ink), -50vw 0 var(--ink);
  border-top: 0;
}

.section-research .section-number { color: #98b7ae; }
.section-research .section-content > p:not(.lead) { color: #b9c1bd; }

.research-topics {
  display: flex;
  gap: 10px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.research-topics span {
  padding: 8px 13px;
  border: 1px solid rgba(245, 243, 238, 0.28);
  border-radius: 999px;
  font-size: 0.78rem;
}

.section-contact { min-height: 520px; }

.contact-link {
  display: inline-block;
  margin-top: 26px;
  padding-bottom: 8px;
  border-bottom: 1px solid currentColor;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.3rem, 2.5vw, 2.2rem);
  text-decoration: none;
}

.contact-link:hover,
.contact-link:focus-visible { color: var(--accent); }

.site-footer {
  display: flex;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 0 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

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

@media (max-width: 1280px) {
  .hero, .section, .site-footer { margin-inline: 5vw; }
}

@media (max-width: 960px) {
  .site-nav { gap: 14px; }
  .site-nav a { font-size: 0.65rem; }
}

@media (max-width: 800px) {
  .site-header { min-height: 74px; }
  .brand-title { display: none; }

  .menu-toggle {
    display: grid;
    gap: 6px;
    width: 42px;
    height: 42px;
    padding: 12px 8px;
    background: transparent;
    border: 0;
    cursor: pointer;
  }

  .menu-toggle span:not(.sr-only) {
    display: block;
    height: 1px;
    background: var(--ink);
    transition: transform 180ms ease;
  }

  .menu-toggle[aria-expanded="true"] span:nth-last-child(2) { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

  .site-nav {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 10px 5vw 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px 0; font-size: 0.72rem; }

  .hero {
    grid-template-columns: 1fr;
    gap: 70px;
    min-height: auto;
    padding-top: 90px;
  }

  h1 { font-size: clamp(3rem, 15vw, 5.4rem); }

  .section {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .section-heading { display: block; }
  .section-number { margin-bottom: 12px; }
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-card { min-height: 280px; }
  .expertise-card + .expertise-card { border-left: 1px solid var(--line); }
  .expertise-card:nth-child(n + 2) { border-top: 0; }
  .card-index { margin-bottom: 55px; }
}

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