*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f5f0e8;
  --fg: #1a1a1a;
  --muted: #8a7d6b;
  --accent: #c8501a;
  --surface: #ede8dc;
  --border: #d8d0c2;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigation ── */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2.5rem;
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--fg);
}

.nav-tagline {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Hero ── */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 88vh;
  border-bottom: 1px solid var(--border);
}

.hero-content {
  padding: 6rem 4rem 6rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.hero-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(3.5rem, 7vw, 6.5rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 2rem;
}

.hero-headline em {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 42ch;
  line-height: 1.7;
}

/* ── Hero Visual — Facade Grid ── */
.hero-visual {
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  gap: 2rem;
}

.facade-grid {
  display: flex;
  gap: 6px;
  align-items: flex-end;
}

.fg-col {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.fg-tall { gap: 4px; }

.fg-floor {
  background: var(--fg);
  width: 22px;
}

.fg-w-1 { height: 32px; }
.fg-w-2 { height: 48px; }

.fg-opened {
  background: var(--bg);
  box-shadow: inset 0 0 0 1.5px var(--border);
}

.facade-legend {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.fl-swatch {
  width: 14px;
  height: 14px;
  display: inline-block;
}
.fl-solid { background: var(--fg); }
.fl-open {
  background: var(--bg);
  box-shadow: inset 0 0 0 1.5px var(--border);
}

/* ── Problem Section ── */
.problem {
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0;
  max-width: 1100px;
  margin: 0 auto;
}

.problem-label {
  padding: 4rem 2.5rem 4rem 2.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border-right: 1px solid var(--border);
  writing-mode: horizontal-tb;
}

.problem-body {
  padding: 4rem 4rem 4rem 2.5rem;
}

.problem-body p {
  font-size: 1.15rem;
  color: var(--fg);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.problem-body p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
}

/* ── How Section ── */
.how {
  padding: 7rem 2.5rem;
  border-bottom: 1px solid var(--border);
}

.how-header {
  text-align: center;
  margin-bottom: 5rem;
}

.how-header h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.how-sub {
  color: var(--muted);
  font-size: 1rem;
}

.how-steps {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  align-items: start;
}

.step-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
  padding-top: 0.25rem;
}

.step-content h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  letter-spacing: 0.01em;
}

.step-content p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ── Output Section ── */
.output {
  background: var(--surface);
  padding: 7rem 2.5rem;
  border-bottom: 1px solid var(--border);
}

.output-header {
  max-width: 1100px;
  margin: 0 auto 4rem;
}

.output-header h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: -0.01em;
}

.output-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
}

.out-card {
  background: var(--surface);
  padding: 2.5rem 2.5rem;
}

.out-card h3 {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.out-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ── Vision Section ── */
.vision {
  background: var(--fg);
  padding: 8rem 2.5rem;
  color: var(--bg);
}

.vision-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.vision-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 300;
  font-style: italic;
  line-height: 1.5;
  margin-bottom: 2.5rem;
  color: var(--bg);
}

.vision-attr {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Footer ── */
.site-footer {
  padding: 5rem 2.5rem 3rem;
  text-align: center;
}

.footer-brand {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.footer-desc {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 3rem;
}

.footer-meta {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--border);
  text-transform: uppercase;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .site-nav { padding: 1rem 1.5rem; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-content {
    padding: 4rem 1.5rem;
  }

  .hero-visual {
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 3rem 1.5rem;
  }

  .problem-inner {
    grid-template-columns: 1fr;
  }

  .problem-label {
    padding: 2rem 1.5rem 0;
    border-right: none;
    border-bottom: 1px solid var(--border);
    writing-mode: unset;
    margin-bottom: 0;
  }

  .problem-body {
    padding: 2rem 1.5rem;
  }

  .how { padding: 5rem 1.5rem; }

  .output { padding: 5rem 1.5rem; }

  .output-grid {
    grid-template-columns: 1fr;
  }

  .vision { padding: 5rem 1.5rem; }

  .site-footer { padding: 4rem 1.5rem 2rem; }

  .step {
    grid-template-columns: 48px 1fr;
    gap: 1rem;
  }

  .step-num { font-size: 2rem; }
}