:root {
  --bg: #f3ede4;
  --bg-soft: #f8f3eb;
  --panel: rgba(255, 251, 245, 0.78);
  --panel-strong: rgba(255, 249, 241, 0.92);
  --line: rgba(54, 43, 34, 0.12);
  --line-strong: rgba(54, 43, 34, 0.24);
  --text: #1d1814;
  --muted: #64584e;
  --accent: #87683e;
  --accent-strong: #5f4725;
  --accent-soft: #d9c5ab;
  --shadow: 0 24px 70px rgba(81, 56, 28, 0.1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(135, 104, 62, 0.08), transparent 24%),
    radial-gradient(circle at 85% 10%, rgba(95, 71, 37, 0.06), transparent 18%),
    linear-gradient(180deg, var(--bg) 0%, #f7f2ea 34%, var(--bg-soft) 100%);
}

a { color: inherit; }
code,
.eyebrow,
.section-kicker,
.mini-kicker,
.topbar {
  font-family: "IBM Plex Mono", monospace;
}

.ambient-lines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(135, 104, 62, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(135, 104, 62, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at center, black 26%, transparent 82%);
  opacity: 0.42;
}

.shell {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
}

.site-header {
  padding: 28px 0 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.topbar div,
.topbar p {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 0;
}

.topbar strong { color: var(--accent-strong); }

.hero,
.intro-grid,
.proof-section,
.closing-band {
  display: grid;
  gap: 28px;
}

.hero {
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: stretch;
}

.hero-copy,
.signal-card,
.note-card,
.contrast-panel,
.capability-grid article,
.proof-card,
.use-grid article,
.principles-band,
.closing-band {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.45), rgba(255,255,255,0.14));
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-copy,
.signal-card,
.note-card,
.proof-card,
.principles-band,
.closing-band {
  position: relative;
  overflow: hidden;
}

.hero-copy::before,
.signal-card::before,
.note-card::before,
.proof-card::before,
.principles-band::before,
.closing-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(135, 104, 62, 0.08), transparent 48%, rgba(95, 71, 37, 0.05));
  pointer-events: none;
}

.hero-copy {
  padding: clamp(28px, 5vw, 56px);
  background: linear-gradient(140deg, rgba(255, 252, 247, 0.96), rgba(247, 239, 228, 0.82));
}

.hero-aside {
  display: grid;
  gap: 18px;
}

.signal-card,
.note-card {
  padding: 22px;
  background: var(--panel);
}

.eyebrow,
.section-kicker,
.mini-kicker {
  margin: 0;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow,
.section-kicker { font-size: 0.78rem; }
.mini-kicker { font-size: 0.72rem; }

h1,
h2,
h3 {
  margin: 0;
  font-family: "Fraunces", serif;
  line-height: 0.98;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 12ch;
  margin-top: 16px;
  font-size: clamp(3rem, 7.2vw, 5.8rem);
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  max-width: 13ch;
}

h3 {
  font-size: 1.4rem;
  line-height: 1.1;
}

.lede,
.body-copy p,
.section-heading > p,
.note-card p,
.capability-grid p,
.use-grid p,
.proof-copy p,
.proof-note p,
.closing-copy p,
.principles-list span,
.topbar a,
.signal-grid dt {
  color: var(--muted);
}

.lede {
  max-width: 61ch;
  margin: 20px 0 0;
  font-size: 1.08rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid var(--line-strong);
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent-strong);
  outline: none;
}

.button.primary {
  background: linear-gradient(90deg, var(--accent), #b18a56);
  color: #fffaf4;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.5);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 0;
}

.signal-grid div {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.signal-grid dt {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.signal-grid dd {
  margin: 8px 0 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
}

.marker-list {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.marker-list li + li {
  margin-top: 10px;
}

.section {
  padding: 40px 0;
}

.intro-grid,
.proof-section,
.closing-band {
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  align-items: start;
}

.stack,
.section-heading,
.principles-list,
.capability-grid,
.use-grid {
  display: grid;
  gap: 16px;
}

.section-heading {
  gap: 14px;
  margin-bottom: 24px;
}

.contrast-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  background: var(--panel-strong);
}

.contrast-panel article {
  padding: 28px;
}

.contrast-panel article + article {
  border-left: 1px solid var(--line);
}

.contrast-panel article.featured {
  background: linear-gradient(180deg, rgba(217, 197, 171, 0.3), rgba(255, 255, 255, 0.18));
}

.contrast-panel ul {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.capability-grid,
.use-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.capability-grid article,
.use-grid article {
  padding: 24px;
}

.capability-grid article {
  min-height: 220px;
}

.proof-copy {
  display: grid;
  gap: 14px;
}

.proof-card {
  padding: 24px;
  background: linear-gradient(180deg, rgba(255, 250, 243, 0.96), rgba(245, 237, 226, 0.84));
}

.proof-card-head {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.proof-card-head span {
  color: var(--muted);
  font-size: 0.9rem;
}

.operator-loop {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
  margin: 20px 0 0;
  padding-left: 22px;
}

.operator-loop li {
  color: var(--text);
}

.operator-loop code,
.proof-note code {
  color: var(--accent-strong);
}

.operator-loop small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
}

.proof-note {
  position: relative;
  z-index: 1;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.use-section .section-heading.narrow h2 {
  max-width: 14ch;
}

.principles-band,
.closing-band {
  padding: 28px;
  background: linear-gradient(135deg, rgba(255, 251, 245, 0.94), rgba(241, 232, 219, 0.88));
}

.principles-band {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.principles-list div {
  display: grid;
  gap: 4px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.principles-list strong {
  color: var(--accent-strong);
}

.closing-band {
  margin-bottom: 72px;
}

.closing-copy {
  display: grid;
  align-content: center;
}

@media (max-width: 1040px) {
  .hero,
  .intro-grid,
  .proof-section,
  .principles-band,
  .closing-band,
  .contrast-panel,
  .capability-grid,
  .use-grid {
    grid-template-columns: 1fr;
  }

  .contrast-panel article + article {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  h2,
  .use-section .section-heading.narrow h2 {
    max-width: none;
  }
}

@media (max-width: 680px) {
  .shell {
    width: min(100% - 22px, 1180px);
  }

  .site-header {
    padding-top: 18px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-copy,
  .signal-card,
  .note-card,
  .capability-grid article,
  .proof-card,
  .use-grid article,
  .principles-band,
  .closing-band,
  .contrast-panel article {
    padding: 20px;
  }

  h1 {
    font-size: clamp(2.6rem, 15vw, 4.5rem);
  }

  h2 {
    font-size: clamp(1.75rem, 10vw, 2.5rem);
  }

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

  .cta-row {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}