:root {
  --ink: #000000;
  --ink-2: #070707;
  --panel: #0d0d0d;
  --panel-2: #141414;
  --line: #1e1e1e;
  --line-2: #383838;

  --fg: #ffffff;
  --fg-2: #a6a6a6;
  --fg-3: #6b6b6b;

  --arc: #ffffff;
  --arc-2: #e6e6e6;
  --arc-soft: rgba(255, 255, 255, 0.07);
  --arc-edge: rgba(255, 255, 255, 0.32);

  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --wide: 1100px;
  --gut: clamp(1.25rem, 4vw, 2.5rem);
  --r: 14px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scrollbar-color: var(--line-2) var(--ink);
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--ink);
  color: var(--fg);
  font-family: var(--sans);
  font-size: clamp(16px, 0.28vw + 15.2px, 18px);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img {
  max-inline-size: 100%;
  height: auto;
  vertical-align: middle;
}

p {
  margin: 0;
}

::selection {
  background: #ffffff;
  color: #000000;
}

:focus-visible {
  outline: 2px solid var(--arc-2);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: var(--gut);
}

main.wrap {
  flex: 1;
}

.hero {
  padding-block: clamp(3.5rem, 11vw, 7rem) clamp(2.5rem, 7vw, 4rem);
  text-align: center;
}

.hero__logo {
  width: clamp(190px, 46vw, 300px);
  margin-bottom: clamp(2rem, 6vw, 3rem);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 1.15rem;
}

h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2rem, 5.6vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.032em;
  margin: 0;
  text-wrap: balance;
}

.lede {
  max-width: 640px;
  margin-inline: auto;
  margin-top: 1.4rem;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.6;
  color: var(--fg-2);
  text-wrap: pretty;
}

.claims {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem 0.75rem;
  margin: clamp(1.6rem, 4vw, 2.2rem) 0 0;
  padding: 0;
}

.claims li {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--arc-2);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 0.42rem 0.95rem;
  white-space: nowrap;
}

.papers {
  padding-block: clamp(2rem, 6vw, 3.5rem) clamp(4rem, 10vw, 6rem);
  border-top: 1px solid var(--line);
}

.section__h {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.35rem);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid > * {
  min-width: 0;
}

.card {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: clamp(1.35rem, 2.6vw, 1.85rem);
  transition: border-color 0.18s;
}

.card:hover {
  border-color: var(--arc-edge);
}

.card__kind {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--arc-2);
  margin-bottom: 0.85rem;
}

.card h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.15rem, 1.9vw, 1.36rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
}

.card__text {
  color: var(--fg-2);
  font-size: 0.955rem;
}

.card__meta {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--fg-3);
  margin-top: 1.1rem;
}

.card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: auto;
  padding-top: 1.35rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.66rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  color: var(--fg);
  transition:
    background 0.18s,
    border-color 0.18s,
    transform 0.18s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.06);
}

.btn--primary:hover {
  border-color: var(--fg);
  background: rgba(255, 255, 255, 0.13);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.03);
}

.btn--ghost:hover {
  border-color: var(--arc-edge);
  background: var(--arc-soft);
}

.foot {
  border-top: 1px solid var(--line);
  background: var(--ink-2);
}

.foot__in {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: center;
  padding-block: 1.6rem;
  font-size: 0.85rem;
  color: var(--fg-3);
}

.foot a {
  color: var(--fg-2);
  text-decoration-color: var(--arc-edge);
  text-underline-offset: 3px;
}

.foot a:hover {
  color: var(--fg);
  text-decoration-color: var(--arc);
}

@media (max-width: 720px) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .card__actions .btn {
    flex: 1 1 auto;
  }

  .foot__in {
    justify-content: center;
    text-align: center;
  }
}

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