:root {
  --paper: oklch(0.96 0.012 95);
  --paper-deep: oklch(0.93 0.014 92);
  --ink: oklch(0.24 0.025 265);
  --muted: oklch(0.48 0.03 265);
  --monsoon: oklch(0.42 0.11 245);
  --monsoon-deep: oklch(0.34 0.1 245);
  --clay: oklch(0.55 0.12 55);
  --rule: oklch(0.82 0.02 265);
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --pad-x: clamp(1.25rem, 4vw, 3.5rem);
  --max: 68rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--monsoon);
  color: var(--paper);
  z-index: 100;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.header-bar {
  max-width: var(--max);
  margin-inline: auto;
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.75rem;
  gap: 1rem;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.wordmark-year {
  font-weight: 500;
  color: var(--monsoon);
  margin-left: 0.15rem;
}

.nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
}

.nav a {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s var(--ease-out);
}

.nav a:hover {
  color: var(--monsoon-deep);
}

.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 1rem var(--pad-x) 1.25rem;
  gap: 0.75rem;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.mobile-nav a {
  font-family: var(--font-display);
  color: var(--ink);
  text-decoration: none;
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav.is-open {
  display: flex;
}

.hero {
  padding: clamp(3rem, 8vw, 6rem) var(--pad-x) clamp(4rem, 10vw, 7rem);
}

.hero-layout {
  max-width: var(--max);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(260px, 0.85fr);
  gap: clamp(2rem, 6vw, 4.5rem);
  align-items: start;
}

.kicker {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0 0 1rem;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 5.2vw, 3.75rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin: 0 0 1.35rem;
  max-width: 14ch;
}

.lede {
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  max-width: 38ch;
  margin: 0 0 2rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s var(--ease-out), color 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.btn-primary {
  padding: 0.85rem 1.4rem;
  background: var(--monsoon);
  color: var(--paper);
  border-radius: 999px;
}

.btn-primary:hover {
  background: var(--monsoon-deep);
  transform: translateY(-1px);
}

.btn-text {
  color: var(--monsoon-deep);
  padding: 0.25rem 0;
  border-bottom: 1px solid oklch(0.42 0.11 245 / 0.35);
}

.btn-text:hover {
  border-bottom-color: var(--monsoon);
}

.btn-wide {
  width: 100%;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
}

.brief {
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  padding: 1.35rem 1.35rem 1rem;
  box-shadow: 0 18px 50px oklch(0.35 0.04 265 / 0.08);
  transform: rotate(0.6deg);
}

.brief-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--rule);
}

.brief-label {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.25rem;
}

.brief-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}

.brief-stamp {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  line-height: 1;
  color: oklch(0.55 0.12 55 / 0.35);
  margin: 0;
  border: 2px solid oklch(0.55 0.12 55 / 0.45);
  border-radius: 50%;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
}

.brief-chart {
  margin: 1rem 0 0.5rem;
}

.brief-chart svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-fill {
  fill: oklch(0.42 0.11 245 / 0.12);
}

.chart-line {
  fill: none;
  stroke: var(--monsoon);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.brief-list li {
  display: grid;
  grid-template-columns: 1.75rem 1fr;
  gap: 0.65rem;
  padding: 0.65rem 0;
  border-bottom: 1px dashed oklch(0.82 0.02 265 / 0.9);
  font-size: 0.92rem;
  animation: brief-in 0.45s var(--ease-out);
}

.brief-list .rank {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--clay);
}

.brief-list .line strong {
  font-weight: 600;
}

.brief-foot {
  margin: 0.75rem 0 0;
  font-size: 0.75rem;
  color: var(--muted);
}

.thesis {
  padding: clamp(3.5rem, 9vw, 6rem) var(--pad-x);
  background: oklch(0.94 0.013 93);
  border-top: 1px solid var(--rule);
}

.thesis-layout {
  max-width: var(--max);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.thesis h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0;
  max-width: 16ch;
}

.thesis-body p {
  margin: 0 0 2rem;
  color: var(--muted);
  max-width: 52ch;
}

.thesis-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.75rem;
}

.thesis-points h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  color: var(--monsoon-deep);
}

.thesis-points p {
  margin: 0;
  font-size: 0.98rem;
}

.engine {
  max-width: var(--max);
  margin-inline: auto;
  padding: clamp(3.5rem, 9vw, 6.5rem) var(--pad-x);
}

.section-kicker {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0 0 0.5rem;
}

.engine h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 2.5rem;
  max-width: 20ch;
}

.engine-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.engine-steps li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}

.step-index {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--clay);
}

.engine-steps h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.engine-steps p {
  margin: 0;
  color: var(--muted);
  max-width: 52ch;
}

.lanes {
  padding: clamp(3rem, 8vw, 5.5rem) var(--pad-x) clamp(4rem, 9vw, 6rem);
  background: var(--monsoon-deep);
  color: oklch(0.94 0.015 250);
}

.lanes h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  max-width: var(--max);
  margin: 0 auto 2.5rem;
  padding: 0;
}

.lanes-layout {
  max-width: var(--max);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.lane {
  padding: 2rem 0;
  border-top: 1px solid oklch(0.94 0.015 250 / 0.22);
}

.lane:last-child {
  padding-bottom: 0;
}

.lane h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 0.65rem;
  color: oklch(0.88 0.06 85);
}

.lane p {
  margin: 0 0 1rem;
  max-width: 48ch;
  color: oklch(0.88 0.02 250 / 0.85);
}

.lane ul {
  margin: 0;
  padding-left: 1.15rem;
  color: oklch(0.9 0.02 250 / 0.9);
}

.lane-systematic {
  margin-left: clamp(0rem, 12vw, 8rem);
}

.access {
  padding: clamp(3.5rem, 9vw, 6rem) var(--pad-x);
  border-top: 1px solid var(--rule);
}

.access-layout {
  max-width: 42rem;
  margin-inline: auto;
  display: grid;
  gap: 2rem;
}

.access h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

.access-copy p {
  margin: 0;
  color: var(--muted);
}

.access-form {
  display: grid;
  gap: 1rem;
}

.access-form label {
  display: grid;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
}

.access-form input,
.access-form select {
  font: inherit;
  font-family: var(--font-body);
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
}

.form-note {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.form-note a {
  color: var(--monsoon);
}

.site-footer {
  padding: 3rem var(--pad-x) 4rem;
  text-align: center;
  border-top: 1px solid var(--rule);
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  margin: 0 0 0.35rem;
}

.footer-tag {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.footer-legal {
  font-size: 0.8125rem;
  color: var(--muted);
  max-width: 36ch;
  margin: 0 auto 1.25rem;
}

.footer-founder {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 500;
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes brief-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 720px) {
  .lanes-layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
    align-items: start;
  }

  .lane {
    border-top: none;
    padding: 0;
  }

  .lane-systematic {
    margin-left: 0;
    padding-top: 3.5rem;
  }
}

@media (max-width: 880px) {
  .hero-layout,
  .thesis-layout {
    grid-template-columns: 1fr;
  }

  .brief {
    transform: none;
    max-width: 26rem;
  }

  .nav {
    display: none;
  }

  .menu-btn {
    display: flex;
  }

  h1 {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .brief-list li {
    animation: none;
  }
}