:root {
  color-scheme: light;
  --ink: #080808;
  --muted: #555;
  --paper: #fff;
  --hairline: #d8d8d8;
  --soft-line: #eeeeee;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 5px;
}

.page-shell {
  width: min(100%, 1280px);
  min-height: 100svh;
  margin: 0 auto;
  padding: 28px 44px 42px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 38px;
  font-size: 0.92rem;
  line-height: 1;
}

.identity {
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
}

.nav-links a {
  position: relative;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: -6px;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  opacity: 0;
  transform: scaleX(0.5);
  transition: opacity 150ms ease, transform 150ms ease;
}

.nav-links a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.72fr);
  align-items: center;
  min-height: calc(100svh - 96px);
  gap: 54px;
  padding: 42px 0 64px;
  border-bottom: 1px solid var(--hairline);
}

.hero-copy {
  width: 100%;
}

.hero-copy h1 {
  max-width: 760px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 4.35rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 0.98;
}

.hero-copy p {
  max-width: 660px;
  margin: 24px 0 0;
  color: #242424;
  font-size: 1.28rem;
  line-height: 1.45;
}

.venn-stage {
  justify-self: end;
  width: min(100%, 540px);
  aspect-ratio: 960 / 560;
  margin: 0;
}

.venn-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.sketch {
  stroke-linecap: round;
  stroke-linejoin: round;
}

.overlap {
  fill: var(--ink);
  stroke: none;
}

.circle-outline {
  fill: none;
  stroke: var(--ink);
  stroke-width: 4.2;
}

.arrow-line {
  fill: none;
  stroke: var(--ink);
  stroke-width: 5.2;
}

.hand-label {
  fill: var(--ink);
  font-family:
    "Bradley Hand", "Comic Sans MS", "Marker Felt", "Segoe Print", cursive;
  font-weight: 700;
  letter-spacing: 0;
}

.top-label {
  font-size: 70px;
}

.circle-label {
  font-size: 50px;
  text-anchor: middle;
}

main {
  display: block;
}

.section-block {
  padding: 84px 0;
  border-bottom: 1px solid var(--hairline);
}

.proof-section {
  padding-top: 92px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(170px, 0.38fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.section-heading h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.62rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.05;
}

.section-heading p {
  max-width: 790px;
  margin: 0;
  color: #181818;
  font-size: 1.28rem;
  line-height: 1.5;
}

.proof-list {
  display: grid;
  gap: 16px;
  margin-top: 54px;
}

.proof-item {
  display: grid;
  grid-template-columns: minmax(170px, 0.32fr) minmax(0, 1fr);
  gap: 34px;
  min-width: 0;
  padding: 26px 28px;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  background: var(--paper);
}

.proof-item > * {
  min-width: 0;
}

.proof-meta h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.proof-meta a,
.footer-links a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.proof-meta a {
  display: inline-block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.proof-item p {
  max-width: 820px;
  margin: 0;
  color: #242424;
  font-size: 1.08rem;
  line-height: 1.62;
  overflow-wrap: anywhere;
}

.work-section,
.now-section {
  display: grid;
  grid-template-columns: minmax(170px, 0.38fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.work-section .section-heading,
.now-section .section-heading {
  display: block;
}

.principles,
.now-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink);
  list-style: none;
}

.principles li,
.now-list li {
  border-bottom: 1px solid var(--soft-line);
}

.principles li {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
}

.principles span {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.principles p {
  margin: 0;
  color: #151515;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.52rem;
  letter-spacing: 0;
  line-height: 1.22;
}

.now-list li {
  max-width: 850px;
  padding: 22px 0;
  color: #202020;
  font-size: 1.08rem;
  line-height: 1.58;
  overflow-wrap: anywhere;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.35;
}

.site-footer p {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
}

@media (max-width: 900px) {
  .page-shell {
    padding: 24px 28px 34px;
  }

  .hero {
    grid-template-columns: 1fr;
    align-content: center;
    gap: 36px;
  }

  .hero-copy h1 {
    font-size: 3.4rem;
    line-height: 1.02;
  }

  .hero-copy p {
    font-size: 1.16rem;
  }

  .venn-stage {
    justify-self: start;
    width: min(100%, 640px);
  }

  .section-block {
    padding: 72px 0;
  }

  .proof-section {
    padding-top: 76px;
  }

  .section-heading,
  .work-section,
  .now-section {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .section-heading p {
    font-size: 1.18rem;
  }

  .proof-item {
    grid-template-columns: minmax(150px, 0.3fr) minmax(0, 1fr);
    gap: 28px;
    padding: 24px;
  }
}

@media (max-width: 620px) {
  .page-shell {
    padding: 22px 22px 28px;
  }

  .site-nav {
    align-items: center;
    min-height: 42px;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 12px 16px;
    max-width: 180px;
    line-height: 1.3;
  }

  .hero {
    min-height: auto;
    align-content: start;
    gap: 26px;
    padding: 68px 0 44px;
  }

  .hero-copy h1 {
    font-size: clamp(2.32rem, 12.4vw, 3.7rem);
    line-height: 1.04;
  }

  .hero-copy p {
    margin-top: 18px;
    font-size: 1.04rem;
  }

  .venn-stage {
    justify-self: center;
    width: min(112%, 680px);
    margin-top: 6px;
  }

  .section-block {
    padding: 54px 0;
  }

  .section-heading {
    gap: 20px;
  }

  .section-heading h2 {
    font-size: 2.12rem;
  }

  .section-heading p {
    font-size: 1.06rem;
    line-height: 1.52;
  }

  .proof-list {
    margin-top: 36px;
    gap: 12px;
  }

  .proof-item {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 20px;
  }

  .proof-item p,
  .now-list li {
    font-size: 1rem;
  }

  .principles li {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 16px;
    padding: 20px 0;
  }

  .principles p {
    font-size: 1.18rem;
    line-height: 1.28;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
    padding-top: 28px;
  }
}

@media (max-width: 390px) {
  .hero-copy h1 {
    font-size: 2.18rem;
  }

  .site-nav {
    font-size: 0.86rem;
  }

  .nav-links {
    gap: 10px 12px;
  }
}