:root {
  color-scheme: light;
  --paper: #f7f5ed;
  --paper-2: #ece8dc;
  --ink: #20211d;
  --muted: #737064;
  --line: rgba(32, 33, 29, 0.17);
  --blue: #38647d;
  --moss: #596f57;
  --red: #8d5650;
  --gold: #a37b31;
  --shadow: rgba(28, 27, 22, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
}

body {
  overflow-x: hidden;
}

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

button {
  font: inherit;
}

.shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 14%, rgba(56, 100, 125, 0.12), transparent 28rem),
    radial-gradient(circle at 86% 86%, rgba(89, 111, 87, 0.12), transparent 26rem),
    linear-gradient(90deg, transparent 0 49.86%, rgba(32, 33, 29, 0.08) 49.86% 50.14%, transparent 50.14% 100%),
    var(--paper);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(247, 245, 237, 0.84);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--ink);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.brand-mark::before {
  content: "";
  width: 9px;
  height: 9px;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0.28;
}

.nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 11px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.38);
}

.hero {
  min-height: calc(100vh - 70px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
  gap: clamp(28px, 7vw, 86px);
  align-items: center;
  padding: clamp(28px, 7vw, 96px) clamp(18px, 6vw, 86px);
}

.hero-text {
  max-width: 820px;
}

.kicker {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(70px, 14vw, 182px);
  line-height: 0.9;
  font-weight: 300;
  letter-spacing: 0;
}

.lead {
  max-width: 620px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.34);
}

.button:hover {
  background: rgba(255, 255, 255, 0.62);
}

.button svg {
  width: 17px;
  height: 17px;
}

.void-plate {
  min-height: 480px;
  position: relative;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0)),
    var(--paper-2);
  box-shadow: 0 28px 90px var(--shadow);
  overflow: hidden;
}

.void-plate canvas {
  width: 100%;
  height: 100%;
  min-height: 480px;
  display: block;
}

.plate-label {
  position: absolute;
  left: 20px;
  bottom: 18px;
  color: var(--muted);
  font-size: 12px;
}

.section {
  padding: clamp(44px, 8vw, 110px) clamp(18px, 6vw, 86px);
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(280px, 1fr);
  gap: clamp(24px, 6vw, 74px);
  align-items: end;
  margin-bottom: clamp(28px, 6vw, 70px);
}

.section h2,
.page-title {
  margin: 0;
  font-size: clamp(38px, 8vw, 112px);
  line-height: 0.98;
  font-weight: 300;
  letter-spacing: 0;
}

.section-head p,
.page-lead {
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
  font-size: 16px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card,
.source-row,
.quote-panel {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.26);
}

.card {
  min-height: 280px;
  padding: 22px;
  display: grid;
  align-content: space-between;
  gap: 28px;
}

.card b,
.source-row b,
.quote-panel b {
  font-weight: 500;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.card a,
.source-row a,
.cite a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.quote {
  margin: 0;
  font-size: clamp(28px, 5vw, 66px);
  line-height: 1.25;
  font-weight: 300;
}

.cite {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.page {
  padding: clamp(38px, 7vw, 92px) clamp(18px, 6vw, 86px);
}

.page-header {
  min-height: 42vh;
  display: grid;
  align-content: end;
  gap: 24px;
  padding-bottom: clamp(34px, 6vw, 72px);
}

.grid-two {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1fr);
  gap: 16px;
}

.quote-panel {
  min-height: 330px;
  padding: clamp(22px, 4vw, 44px);
  display: grid;
  align-content: space-between;
  gap: 44px;
}

.note {
  color: var(--muted);
  line-height: 1.9;
}

.thinker-list,
.source-list {
  display: grid;
  gap: 12px;
}

.source-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 22px;
  padding: 20px;
  align-items: baseline;
}

.source-row p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.footer {
  padding: 26px clamp(18px, 6vw, 86px) 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.1;
  mix-blend-mode: multiply;
  background-image:
    linear-gradient(115deg, rgba(32, 33, 29, 0.16) 0 1px, transparent 1px),
    linear-gradient(25deg, rgba(56, 100, 125, 0.12) 0 1px, transparent 1px);
  background-size: 43px 43px, 71px 71px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 680ms ease, transform 680ms ease;
}

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

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero,
  .section-head,
  .grid-two {
    grid-template-columns: 1fr;
  }

  .void-plate,
  .void-plate canvas {
    min-height: 360px;
  }

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

  .source-row {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}