:root {
  --bg:        #ffffff;
  --bg-off:    #f7f7f5;
  --bg-dark:   #0f0f0f;
  --ink:       #0f0f0f;
  --ink-dark:  #ffffff;
  --muted:     #6b6b68;
  --muted-dark:#9b9b96;
  --line:      #d8d8d4;
  --line-dark: #2a2a28;
  --serif:     Georgia, "Times New Roman", Times, serif;
  --sans:      -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono:      "SF Mono", "Roboto Mono", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
img { max-width: 100%; display: block; }

/* ── Typography ── */
h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--ink);
}

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}
.nav nav { display: flex; align-items: center; gap: 32px; }
.nav nav a {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.15s;
}
.nav nav a:hover { color: var(--ink); }
.nav-cta {
  border: 1px solid var(--ink) !important;
  color: var(--ink) !important;
  padding: 8px 20px;
  font-family: var(--mono) !important;
  transition: background 0.15s, color 0.15s;
}
.nav-cta:hover { background: var(--ink); color: var(--bg) !important; }

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: var(--bg);
  padding: 14px 30px;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.8; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--ink);
  color: var(--ink);
  padding: 14px 30px;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background 0.15s, color 0.15s;
}
.btn-ghost:hover { background: var(--ink); color: var(--bg); }

/* ── Hero ── */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 40px 90px;
  border-bottom: 1px solid var(--line);
}
.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  overflow: hidden;
}
.hero-inner { min-width: 0; }
.hero-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  margin-bottom: 24px;
}
.lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-wave-wrap {
  min-width: 0;
  overflow: hidden;
}
.hero-chart-canvas {
  width: 100%;
  height: 280px;
  display: block;
  cursor: crosshair;
}

/* ── Sections ── */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 90px 40px;
}
.section-ruled {
  border-bottom: 1px solid var(--line);
}
.section-dark {
  background: var(--bg-dark);
  color: var(--ink-dark);
  max-width: none;
  border-bottom: none;
}
.section-dark .section-header { max-width: 1200px; margin: 0 auto 60px; }
.section-dark h2, .section-dark h3 { color: var(--ink-dark); }
.section-dark .section-lead, .section-dark p { color: var(--muted-dark); }
.section-dark .eyebrow { color: var(--muted-dark); }
.section-dark .eyebrow::before { border-color: var(--line-dark); }
.section-header { margin-bottom: 56px; }
.section h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  max-width: 780px;
  margin-bottom: 20px;
}
.section-lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 680px;
}

/* ── Eyebrow ── */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--line);
  flex-shrink: 0;
}

/* ── Problem grid ── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.problem-card {
  padding: 40px 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.problem-num {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 2rem;
  color: var(--line);
  margin-bottom: 18px;
  line-height: 1;
}
.problem-card h3 {
  font-size: 1rem;
  margin-bottom: 12px;
  font-weight: 400;
}
.problem-card p { font-size: 0.9rem; color: var(--muted); }

/* ── Process steps ── */
.process-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-dark);
  margin-bottom: 32px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 40px;
}
.process-steps {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: 1200px;
  margin: 0 auto 60px;
  padding: 0 40px;
}
.process-step {
  flex: 1;
  padding: 32px;
  border: 1px solid var(--line-dark);
}
.process-divider {
  padding: 40px 16px 0;
  color: var(--muted-dark);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.step-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--muted-dark);
  margin-bottom: 14px;
}
.process-step h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--ink-dark);
}
.process-step p { font-size: 0.9rem; color: var(--muted-dark); }

/* Callout row */
.callout-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-dark);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.callout {
  padding: 32px 32px 32px 0;
  border-right: 1px solid var(--line-dark);
  padding-right: 32px;
  padding-left: 0;
}
.callout:first-child { padding-left: 0; }
.callout:last-child { border-right: none; padding-right: 0; padding-left: 32px; }
.callout:nth-child(2) { padding-left: 32px; }
.callout strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--ink-dark);
  margin-bottom: 8px;
}
.callout p { font-size: 0.88rem; color: var(--muted-dark); }

/* ── Deliver grid ── */
.deliver-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.deliver-item {
  padding: 36px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.deliver-icon {
  display: inline-flex;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--ink);
  margin-bottom: 20px;
}
.deliver-icon svg { width: 18px; height: 18px; }
.deliver-item h3 { font-size: 0.98rem; margin-bottom: 10px; font-weight: 400; }
.deliver-item p { font-size: 0.88rem; color: var(--muted); }

/* ── Showcase ── */
.section-showcase {
  border-bottom: 1px solid var(--line);
  max-width: none;
  background: var(--bg-off);
}
.section-showcase .section-header {
  max-width: 1200px;
  margin: 0 auto 48px;
}
.showcase {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.showcase figure {
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--bg);
}
.showcase img { width: 100%; height: auto; display: block; }
.showcase figcaption {
  padding: 16px 20px;
  font-size: 0.84rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  letter-spacing: 0.02em;
}
.showcase figcaption strong { color: var(--ink); font-weight: 600; }

/* ── Focus / point list ── */
.focus-hed {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--muted-dark);
  margin-bottom: 32px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 40px;
}
.point-list {
  list-style: none;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.point-list li {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line-dark);
}
.point-list li:first-child { border-top: 1px solid var(--line-dark); }
.point-icon {
  flex: 0 0 auto;
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-dark);
  color: var(--muted-dark);
  margin-top: 2px;
}
.point-icon svg { width: 18px; height: 18px; }
.point-list h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  font-weight: 400;
  color: var(--ink-dark);
}
.point-list p { font-size: 0.9rem; color: var(--muted-dark); }

/* ── Tech grid ── */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.tech-card {
  padding: 40px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.tech-card-accent {
  background: var(--bg-off);
}
.tech-card h3 {
  font-size: 1.05rem;
  margin-bottom: 12px;
  font-weight: 400;
}
.tech-card p { font-size: 0.9rem; color: var(--muted); }

/* ── Track record ── */
.clients-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 40px;
}
.client-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line-dark);
  padding: 14px 28px;
  color: var(--ink-dark);
}
.client-logo svg:first-child {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.client-logo span {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
/* Foster + Partners — text badge, no icon */
.client-logo-text {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.track-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.track-card {
  padding: 36px 28px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
.track-icon {
  display: inline-flex;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-dark);
  color: var(--muted-dark);
  margin-bottom: 18px;
}
.track-icon svg { width: 18px; height: 18px; }
.track-card h3 { font-size: 0.95rem; margin-bottom: 10px; font-weight: 400; color: var(--ink-dark); }
.track-card p { font-size: 0.88rem; color: var(--muted-dark); }

/* ── Vision ── */
.vision-list {
  border-top: 1px solid var(--line);
}
.vision-item {
  display: flex;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
}
.vision-marker {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--muted);
  flex-shrink: 0;
  padding-top: 2px;
}
.vision-item h3 { font-size: 1.05rem; margin-bottom: 6px; font-weight: 400; }
.vision-item p { font-size: 0.9rem; color: var(--muted); }

/* ── Contact ── */
.section-contact {
  text-align: center;
  padding: 120px 40px;
  border-bottom: 1px solid var(--line);
}
.contact-hed {
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 1.05;
  margin: 0 auto 20px;
  text-align: center;
}
.contact-sub {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 40px;
}
.contact-btn { margin: 0 auto 24px; }
.contact-note {
  font-size: 0.84rem;
  color: var(--muted);
  font-family: var(--mono);
}
[data-icon] svg { width: 100%; height: 100%; display: block; }
.contact-btn [data-icon] { width: 18px; height: 18px; }

/* ── Ticker ── */
.ticker {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
  padding: 12px 40px;
  display: flex;
  align-items: center;
  gap: 18px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.ticker-sep {
  width: 1px;
  height: 14px;
  background: var(--line);
  flex-shrink: 0;
}
.ticker-fill {
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(to right, var(--line) 0, var(--line) 4px, transparent 4px, transparent 9px);
}

/* ── Footer ── */
.footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 40px 60px;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.78rem;
  font-family: var(--mono);
}

/* ── Approach canvas (not used in this version but kept) ── */
.approach-chart-canvas {
  width: 100%;
  height: 180px;
  display: block;
  cursor: crosshair;
  margin-bottom: 40px;
}

/* ── Scroll reveal ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s cubic-bezier(0.22,1,0.36,1), transform 0.7s cubic-bezier(0.22,1,0.36,1);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.08s; }
[data-reveal-delay="2"] { transition-delay: 0.16s; }
[data-reveal-delay="3"] { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .deliver-grid { grid-template-columns: repeat(2, 1fr); }
  .track-grid   { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .hero-layout    { grid-template-columns: 1fr; }
  .hero-wave-wrap { display: none; }

  /* Solution dark section */
  .process-steps  { flex-direction: column; padding: 0 24px; }
  .process-step   { flex: none; }
  .process-divider { display: none; }
  .callout-row    { grid-template-columns: 1fr; padding: 0 24px; }
  .callout        { border-right: none; border-bottom: 1px solid var(--line-dark); padding: 24px 0 !important; }
  .callout:last-child { border-bottom: none; }
  .process-label  { padding: 0 24px; }

  /* Grids */
  .tech-grid      { grid-template-columns: 1fr; }
  .showcase       { grid-template-columns: 1fr; }

  /* Dark section inner padding */
  .section-dark .section-header { padding: 0 24px; }
  .clients-row    { padding: 0 24px; flex-wrap: wrap; }
  .track-grid     { padding: 0 24px; }
  .point-list     { padding: 0 24px; }
  .focus-hed      { padding: 0 24px; }
  .showcase       { padding: 0 24px; }
  .section-showcase .section-header { padding: 0 24px; }
}

@media (max-width: 640px) {
  /* Nav */
  .nav-inner { padding: 14px 20px; }
  .nav nav a:not(.nav-cta) { display: none; }

  /* Spacing */
  .hero  { padding: 56px 20px 52px; }
  .section { padding: 56px 20px; }
  .section-contact { padding: 80px 20px; }

  /* Hero */
  .hero h1  { font-size: clamp(1.8rem, 8vw, 2.8rem); }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { text-align: center; justify-content: center; }

  /* Problem — single col, remove double-border on left */
  .problem-grid {
    grid-template-columns: 1fr;
    border-left: none;
  }
  .problem-card { border-left: 1px solid var(--line); }

  /* Deliver — single col */
  .deliver-grid {
    grid-template-columns: 1fr;
    border-left: none;
  }
  .deliver-item { border-left: 1px solid var(--line); }

  /* Track grid */
  .track-grid {
    grid-template-columns: 1fr;
    border-left: none;
    padding: 0 20px;
  }
  .track-card { border-left: 1px solid var(--line-dark); }

  /* Tech grid */
  .tech-grid { border-left: none; }
  .tech-card { border-left: 1px solid var(--line); }

  /* About grid padding */
  .about-grid { grid-template-columns: 1fr; }

  /* Clients badges wrap */
  .clients-row { padding: 0 20px; gap: 8px; }
  .client-logo { padding: 10px 18px; }

  /* Point list */
  .point-list { padding: 0 20px; }
  .focus-hed  { padding: 0 20px; }

  /* Process */
  .process-steps  { padding: 0 20px; }
  .process-label  { padding: 0 20px; }
  .callout-row    { padding: 0 20px; }

  /* Showcase */
  .showcase { padding: 0 20px; }
  .section-showcase .section-header { padding: 0 20px; }

  /* Section dark inner */
  .section-dark .section-header { padding: 0 20px; }

  /* Contact */
  .contact-hed { font-size: clamp(2.4rem, 12vw, 4rem); }

  /* Ticker */
  .ticker { padding: 10px 20px; gap: 10px; font-size: 0.62rem; }
  .ticker-fill { display: none; }

  /* Footer */
  .footer { padding: 24px 20px 48px; flex-direction: column; gap: 6px; }

  /* Vision */
  .vision-list { padding: 0; }
}