:root {
  --ink: #131d2e;
  --ink-deep: #0b121e;
  --ink-mid: #1f2d45;
  --moss: #4a5d45;
  --moss-deep: #33422f;
  --moss-light: #7c9174;
  --clay: #b5502f;
  --clay-light: #d97a52;
  --ochre: #a9791f;
  --paper: #f6f1e6;
  --paper-dim: #ece3ce;
  --ink-text: #201c16;
  --ink-soft: #55503f;
  --white: #ffffff;
  --font-serif: 'Source Serif 4', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--ochre); outline-offset: 2px; }

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

/* subtle paper-grain texture */
.grain { position: relative; }
.grain::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0.03; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
/* faint topographic-line texture for dark bands */
.topo { position: relative; overflow: hidden; }
.topo::after {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0.05;
  background-image:
    repeating-radial-gradient(circle at 15% 30%, transparent 0, transparent 38px, rgba(255,255,255,0.5) 39px, transparent 40px),
    repeating-radial-gradient(circle at 85% 75%, transparent 0, transparent 52px, rgba(255,255,255,0.5) 53px, transparent 54px);
}

/* ---------- nav ---------- */
.site-nav { background: var(--ink); position: sticky; top: 0; z-index: 100; }
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 1.1rem 1.75rem;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.nav-word { font-family: var(--font-serif); font-size: 1.25rem; font-weight: 600; color: var(--white); text-decoration: none; }
.nav-word span { color: var(--ochre); }
.nav-links { display: flex; align-items: center; gap: 1.75rem; }
.nav-links a {
  font-size: 0.8rem; font-weight: 500; letter-spacing: 0.04em; color: rgba(255,255,255,0.82);
  text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover { color: var(--ochre); }
.nav-cta { background: var(--clay); color: var(--white) !important; padding: 0.55rem 1.1rem; border-radius: 2px; font-weight: 600 !important; }
.nav-cta:hover { background: var(--clay-light) !important; }

/* ---------- hero ---------- */
.hero { background: linear-gradient(160deg, var(--ink) 0%, var(--ink-deep) 100%); padding: 6.5rem 1.75rem 7rem; position: relative; overflow: hidden; }
.hero-inner { max-width: 780px; margin: 0 auto; text-align: center; position: relative; z-index: 2; }
.eyebrow {
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ochre); margin-bottom: 1.5rem;
}
.hero-line {
  font-family: var(--font-serif); font-weight: 600; font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.1; color: var(--white);
}
.hero-sub {
  font-size: 1.12rem; color: rgba(255,255,255,0.82); max-width: 620px; margin: 1.75rem auto 0;
  font-weight: 300; line-height: 1.65;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-top: 2.25rem; }
.btn { display: inline-block; font-size: 0.88rem; font-weight: 600; text-decoration: none; padding: 0.9rem 1.75rem; border-radius: 2px; transition: all 0.2s; }
.btn-clay { background: var(--clay); color: var(--white); }
.btn-clay:hover { background: var(--clay-light); transform: translateY(-1px); }
.btn-outline { border: 1px solid rgba(255,255,255,0.4); color: var(--white); }
.btn-outline:hover { border-color: var(--ochre); color: var(--ochre); }
.hero .motif { position: absolute; inset: 0; opacity: 0.14; z-index: 1; pointer-events: none; }

/* ---------- thesis ---------- */
.thesis { padding: 5rem 1.75rem 4.5rem; }
.thesis-inner { max-width: 700px; margin: 0 auto; text-align: center; }
.thesis h2 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.7rem, 3.4vw, 2.2rem); color: var(--ink); margin-bottom: 1.5rem; }
.thesis p { color: var(--ink-soft); font-size: 1.05rem; margin-bottom: 1.1rem; }
.thesis-emphasis {
  font-family: var(--font-serif); font-weight: 600; font-style: italic; font-size: 1.35rem;
  color: var(--clay); margin-top: 1.75rem; line-height: 1.4;
}

/* ---------- sitemind proof point ---------- */
.proof { background: var(--moss-deep); padding: 4.5rem 1.75rem; color: var(--white); }
.proof-inner { max-width: 780px; margin: 0 auto; text-align: center; }
.proof .cta-eyebrow { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ochre); margin-bottom: 1rem; }
.proof h2 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.8rem, 3.5vw, 2.4rem); margin-bottom: 1rem; }
.proof-lede { font-size: 1.15rem; font-weight: 500; color: var(--paper); margin-bottom: 1.1rem; }
.proof-body { color: rgba(255,255,255,0.82); font-size: 1rem; margin-bottom: 1.5rem; max-width: 620px; margin-left: auto; margin-right: auto; }
.proof-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; margin-bottom: 1.75rem; }
.proof-tags span {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.03em; color: var(--paper);
  border: 1px solid rgba(246,241,230,0.35); padding: 0.3rem 0.75rem; border-radius: 20px;
}
.proof-link { color: var(--ochre); font-weight: 700; text-decoration: none; font-size: 0.95rem; }
.proof-link:hover { text-decoration: underline; }

/* ---------- six areas ---------- */
.areas { padding: 5.5rem 1.75rem; position: relative; }
.areas-inner { max-width: 1120px; margin: 0 auto; position: relative; z-index: 2; }
.areas-header { max-width: 680px; margin: 0 auto 3rem; text-align: center; }
.section-label {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--clay); margin-bottom: 1rem;
}
.areas h2 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.7rem, 3.2vw, 2.2rem); color: var(--ink); margin-bottom: 1rem; }
.areas-header p { color: var(--ink-soft); font-size: 1.02rem; }
.areas-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--paper-dim); border-left: 1px solid var(--paper-dim); }
.area-card { border-right: 1px solid var(--paper-dim); border-bottom: 1px solid var(--paper-dim); padding: 2.25rem 1.75rem; }
.area-num { font-family: var(--font-serif); font-size: 1.1rem; font-weight: 600; color: var(--ochre); margin-bottom: 0.9rem; }
.area-card h3 { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 600; color: var(--ink); margin-bottom: 0.6rem; line-height: 1.25; }
.area-imperative { font-weight: 600; color: var(--ink); }
.area-card p { color: var(--ink-soft); font-size: 0.92rem; margin-top: 0.6rem; }
.area-current {
  display: inline-block; margin-top: 1rem; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
  color: var(--moss-deep); background: rgba(74,93,69,0.12); padding: 0.3rem 0.6rem; border-radius: 2px;
}

/* ---------- transition band ---------- */
.transition { background: var(--ink); padding: 5rem 1.75rem; text-align: center; color: var(--white); }
.transition-inner { max-width: 700px; margin: 0 auto; }
.transition h2 { font-family: var(--font-serif); font-weight: 600; font-style: italic; font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 1.75rem; line-height: 1.4; }
.transition p { color: rgba(255,255,255,0.78); font-size: 1.02rem; margin-bottom: 1rem; }
.transition .btn-outline { margin-top: 1.5rem; }

/* ---------- vision teaser / closing cta (shared) ---------- */
.cta-band { background: var(--paper-dim); padding: 5rem 1.75rem; text-align: center; }
.cta-inner { max-width: 640px; margin: 0 auto; }
.cta-band h2 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.6rem, 3vw, 2.1rem); color: var(--ink); margin-bottom: 1.25rem; line-height: 1.3; }
.cta-band p { color: var(--ink-soft); font-size: 1.02rem; margin-bottom: 1.75rem; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink-deep); padding: 3rem 1.75rem 2rem; text-align: center; }
.footer-word { font-family: var(--font-serif); font-size: 1.15rem; font-weight: 600; color: var(--white); }
.footer-word span { color: var(--ochre); }
.footer-tag { color: rgba(255,255,255,0.6); font-size: 0.85rem; margin-top: 0.4rem; margin-bottom: 1.5rem; }
.footer-nav { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.footer-nav a { font-size: 0.82rem; color: rgba(255,255,255,0.7); text-decoration: none; }
.footer-nav a:hover { color: var(--ochre); }
.footer-copy { color: rgba(255,255,255,0.4); font-size: 0.75rem; }

/* ---------- vision page ---------- */
.vision-hero { background: linear-gradient(160deg, var(--ink) 0%, var(--ink-deep) 100%); padding: 6rem 1.75rem 5.5rem; text-align: center; }
.vision-hero-inner { max-width: 720px; margin: 0 auto; }
.vision-hero h1 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(2.1rem, 4.5vw, 3.1rem); color: var(--white); line-height: 1.2; margin: 1rem 0 1.5rem; }
.vision-hero p { color: rgba(255,255,255,0.82); font-size: 1.08rem; line-height: 1.6; }

.vsection { padding: 5rem 1.75rem; }
.vsection.bg-paper-dim { background: var(--paper-dim); }
.vsection.bg-ink { background: var(--ink); color: rgba(255,255,255,0.85); }
.vsection.bg-ink h2 { color: var(--white); }
.vsection.bg-ink p { color: rgba(255,255,255,0.8); }
.vsection-inner { max-width: 700px; margin: 0 auto; }
.vsection h2 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.6rem, 3vw, 2.1rem); color: var(--ink); margin-bottom: 1.5rem; }
.vsection p { color: var(--ink-soft); font-size: 1.03rem; margin-bottom: 1.1rem; }
.vsection .emphasis {
  font-family: var(--font-serif); font-weight: 600; font-style: italic; font-size: 1.3rem;
  color: var(--clay); margin: 1.5rem 0; line-height: 1.4;
}
.vsection.bg-ink .emphasis { color: var(--ochre); }
.vsection .sequence {
  font-family: var(--font-serif); font-weight: 600; font-size: 1.35rem; color: var(--ink);
  text-align: center; margin: 2rem 0; letter-spacing: 0.01em;
}
.vsection .sequence span { color: var(--clay); }

.diagram-wrap { max-width: 640px; margin: 2.5rem auto 0; }
.diagram-wrap svg { width: 100%; height: auto; }

.vision-closing { background: var(--ink-deep); padding: 6rem 1.75rem; text-align: center; }
.vision-closing-inner { max-width: 640px; margin: 0 auto; }
.vision-closing h2 {
  font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  color: var(--white); line-height: 1.4; margin-bottom: 0.3rem;
}
.vision-closing .btn-clay { margin-top: 2rem; }

@media (max-width: 900px) {
  .areas-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .areas-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 1rem; }
}

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }