* {
  box-sizing: border-box;
}

:root {
  --psa-paper: #eff1ea;
  --psa-panel: #fbfcf7;
  --psa-ink: #171a22;
  --psa-soft-ink: #5d6470;
  --psa-rule: #c7cec2;
  --psa-mint: #a9d7cd;
  --psa-lilac: #c6bfe8;
  --psa-ochre: #d3b760;
  --psa-coral: #cf725e;
  --psa-blue: #6689bd;
  --psa-shadow: #dfe4da;
  --psa-type-display: "American Typewriter", "Courier", "Courier New", monospace;
  --psa-type-body: Seravek, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --psa-type-mono: Monaco, "Andale Mono", "Courier New", monospace;
}

body {
  margin: 0;
  background: var(--psa-paper);
  color: var(--psa-ink);
  font-family: var(--psa-type-body);
}

a {
  color: inherit;
}

.psa-home,
.psa-article {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
}

.psa-hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 38px;
  align-items: center;
  padding: 72px 0 54px;
  border-bottom: 1px solid var(--psa-rule);
}

.psa-hero__copy {
  position: relative;
  z-index: 2;
}

.psa-kicker,
.psa-section-label,
.psa-mini-label,
.psa-rail-title {
  margin: 0 0 14px;
  font-family: var(--psa-type-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--psa-soft-ink);
}

.psa-hero h1 {
  max-width: 650px;
  margin: 0;
  font-family: var(--psa-type-display);
  font-size: clamp(56px, 8vw, 112px);
  line-height: 0.89;
  letter-spacing: -0.075em;
  font-weight: 700;
}

.psa-dek {
  max-width: 650px;
  margin: 30px 0 0;
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.35;
  color: #303641;
}

.psa-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 30px;
}

.psa-topics > * {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 7px 11px;
  border: 1px solid var(--psa-rule);
  border-radius: 999px;
  background: var(--psa-panel);
  font-size: 13px;
}

.psa-fan {
  position: relative;
  min-height: 470px;
  border: 1px solid var(--psa-rule);
  border-radius: 34px;
  background: var(--psa-panel);
  overflow: hidden;
  box-shadow: 18px 18px 0 var(--psa-shadow);
}

.psa-fan__hub {
  position: absolute;
  left: 58px;
  bottom: 58px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--psa-ink);
  border: 8px solid var(--psa-ochre);
  z-index: 4;
}

.psa-fan__rib {
  position: absolute;
  left: 78px;
  bottom: 76px;
  width: 360px;
  height: 3px;
  border-radius: 999px;
  background: var(--psa-ink);
  transform-origin: left center;
  opacity: 0.9;
}

.rib-a { transform: rotate(-42deg); }
.rib-b { transform: rotate(-24deg); }
.rib-c { transform: rotate(-7deg); }
.rib-d { transform: rotate(12deg); }
.rib-e { transform: rotate(31deg); }

.psa-fan__leaf {
  position: absolute;
  width: 172px;
  height: 310px;
  border: 1px solid rgba(23, 26, 34, 0.26);
  border-radius: 22px 22px 80px 22px;
  transform-origin: 30px 285px;
  opacity: 0.95;
}

.leaf-a {
  left: 106px;
  bottom: 72px;
  background: var(--psa-mint);
  transform: rotate(-36deg);
}

.leaf-b {
  left: 129px;
  bottom: 83px;
  background: var(--psa-lilac);
  transform: rotate(-12deg);
}

.leaf-c {
  left: 152px;
  bottom: 78px;
  background: var(--psa-coral);
  transform: rotate(15deg);
}

.psa-splay,
.psa-method,
.psa-feature,
.psa-warning,
.psa-archive {
  margin: 28px 0;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--psa-rule);
  background: var(--psa-panel);
}

.psa-splay h2,
.psa-method h2,
.psa-feature h2,
.psa-archive h2 {
  margin: 0;
  font-family: var(--psa-type-display);
  font-size: clamp(31px, 4vw, 58px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.psa-splay__grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 22px;
  margin-top: 30px;
}

.psa-seed-card {
  padding: 24px;
  border: 2px solid var(--psa-ink);
  border-radius: 26px 26px 26px 6px;
  background: #f6f7f1;
}

.psa-seed-card h3 {
  margin: 0 0 18px;
  font-family: var(--psa-type-display);
  font-size: 27px;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.psa-seed-card p:last-child {
  margin: 0;
  color: var(--psa-soft-ink);
  line-height: 1.55;
}

.psa-variant-stack {
  display: grid;
  gap: 10px;
}

.psa-variant-stack p {
  margin: 0;
  padding: 17px 18px;
  border-left: 12px solid var(--psa-mint);
  background: #f4f5ef;
  font-size: 16px;
  line-height: 1.45;
}

.psa-variant-stack p:nth-child(2) { border-left-color: var(--psa-lilac); }
.psa-variant-stack p:nth-child(3) { border-left-color: var(--psa-ochre); }
.psa-variant-stack p:nth-child(4) { border-left-color: var(--psa-coral); }

.psa-variant-stack span {
  display: inline-block;
  min-width: 92px;
  margin-right: 8px;
  font-family: var(--psa-type-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--psa-soft-ink);
}

.psa-method {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 34px;
  align-items: start;
}

.psa-method__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  counter-reset: method;
}

.psa-method__steps li {
  position: relative;
  padding: 18px 18px 18px 68px;
  border: 1px solid var(--psa-rule);
  background: #f7f8f3;
  counter-increment: method;
}

.psa-method__steps li::before {
  content: counter(method);
  position: absolute;
  left: 17px;
  top: 17px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--psa-blue);
  color: #fff;
  font-family: var(--psa-type-mono);
  font-size: 13px;
}

.psa-method__steps strong {
  display: block;
  margin-bottom: 5px;
  font-family: var(--psa-type-display);
  font-size: 20px;
  letter-spacing: -0.04em;
}

.psa-method__steps span {
  display: block;
  color: var(--psa-soft-ink);
  line-height: 1.45;
}

.psa-feature {
  max-width: 860px;
  margin-left: auto;
  border-radius: 4px 42px 42px 42px;
  border-top: 10px solid var(--psa-ochre);
}

.psa-feature p:last-child {
  margin: 22px 0 0;
  font-size: 20px;
  line-height: 1.55;
  color: #333945;
}

.psa-warning {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 20px;
  align-items: center;
  background: #e9ebe4;
}

.psa-warning__mark {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 14px solid var(--psa-coral);
  border-right-color: transparent;
}

.psa-warning p {
  margin: 0;
  font-size: 18px;
  line-height: 1.55;
}

.psa-archive__head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--psa-rule);
}

.psa-posts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.psa-post-card {
  min-height: 100%;
}

.psa-post-card__link {
  position: relative;
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 20px 20px 22px;
  text-decoration: none;
  border: 1px solid var(--psa-rule);
  border-radius: 28px 28px 72px 28px;
  background: #f8f9f4;
  overflow: hidden;
  transition: transform 160ms ease, border-color 160ms ease;
}

.psa-post-card__link:hover,
.psa-post-card__link:focus-visible {
  transform: rotate(-1deg) translateY(-3px);
  border-color: var(--psa-ink);
  outline: none;
}

.psa-post-card__hinge {
  position: absolute;
  left: 16px;
  bottom: 16px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--psa-ink);
}

.psa-post-card__hinge span {
  position: absolute;
  left: 35px;
  top: 22px;
  width: 170px;
  height: 2px;
  transform-origin: left center;
  background: var(--psa-rule);
}

.psa-post-card__hinge span:nth-child(1) { transform: rotate(-28deg); }
.psa-post-card__hinge span:nth-child(2) { transform: rotate(-8deg); }
.psa-post-card__hinge span:nth-child(3) { transform: rotate(14deg); }

.psa-post-card__meta {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--psa-type-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--psa-soft-ink);
}

.psa-post-card h3 {
  position: relative;
  z-index: 1;
  margin: 44px 0 14px;
  font-family: var(--psa-type-display);
  font-size: 28px;
  line-height: 1.02;
  letter-spacing: -0.052em;
}

.psa-post-card p {
  position: relative;
  z-index: 1;
  margin: auto 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--psa-rule);
  color: var(--psa-soft-ink);
  line-height: 1.5;
}

.psa-article-hero {
  padding: 34px 0 30px;
  border-bottom: 1px solid var(--psa-rule);
}

.psa-article-hero__top {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 58px;
  font-family: var(--psa-type-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.psa-back a {
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.psa-article-site {
  margin: 0;
  color: var(--psa-soft-ink);
}

.psa-article-hero__title {
  max-width: 900px;
}

.psa-article-hero h1 {
  margin: 0;
  font-family: var(--psa-type-display);
  font-size: clamp(42px, 6.4vw, 86px);
  line-height: 0.95;
  letter-spacing: -0.065em;
}

.psa-article-meta {
  margin-top: 22px;
  color: var(--psa-soft-ink);
  font-family: var(--psa-type-mono);
  font-size: 12px;
}

.psa-article-frame {
  display: grid;
  grid-template-columns: 170px minmax(0, 720px) 250px;
  gap: 24px;
  align-items: start;
  padding: 34px 0 76px;
}

.psa-seed-rail,
.psa-divergence {
  position: sticky;
  top: 18px;
  padding: 18px;
  border: 1px solid var(--psa-rule);
  background: var(--psa-panel);
}

.psa-seed-rail {
  border-radius: 24px 24px 24px 4px;
}

.psa-seed-rail ol {
  margin: 0;
  padding-left: 18px;
  color: var(--psa-soft-ink);
  font-size: 13px;
  line-height: 1.8;
}

.psa-divergence {
  border-radius: 4px 24px 24px 24px;
  border-top: 8px solid var(--psa-lilac);
}

.psa-divergence dl,
.psa-divergence dd {
  margin: 0;
}

.psa-divergence dt {
  margin-top: 16px;
  font-family: var(--psa-type-display);
  font-size: 18px;
  letter-spacing: -0.035em;
}

.psa-divergence dt:first-of-type {
  margin-top: 0;
}

.psa-divergence dd {
  margin-top: 5px;
  color: var(--psa-soft-ink);
  font-size: 13px;
  line-height: 1.5;
}

.psa-article-body {
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--psa-rule);
  background: var(--psa-panel);
  border-radius: 30px 30px 30px 8px;
}

.psa-article-body > *:first-child {
  margin-top: 0;
}

.psa-article-body p,
.psa-article-body li {
  font-size: 18px;
  line-height: 1.72;
}

.psa-article-body h2,
.psa-article-body h3 {
  margin-top: 1.6em;
  font-family: var(--psa-type-display);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.psa-article-body h2 {
  font-size: 36px;
}

.psa-article-body h3 {
  font-size: 27px;
}

.psa-article-body blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  border-left: 12px solid var(--psa-ochre);
  background: #f1f2eb;
  color: #303641;
}

.psa-article-body code {
  font-family: var(--psa-type-mono);
  font-size: 0.92em;
  background: #ecefe7;
  padding: 0.12em 0.32em;
  border-radius: 4px;
}

@media (max-width: 940px) {
  .psa-hero,
  .psa-splay__grid,
  .psa-method,
  .psa-article-frame {
    grid-template-columns: 1fr;
  }

  .psa-fan {
    min-height: 360px;
  }

  .psa-posts {
    grid-template-columns: 1fr 1fr;
  }

  .psa-seed-rail,
  .psa-divergence {
    position: static;
  }
}

@media (max-width: 640px) {
  .psa-home,
  .psa-article {
    width: min(100% - 20px, 1180px);
  }

  .psa-hero {
    min-height: auto;
    padding-top: 34px;
  }

  .psa-hero h1 {
    font-size: 54px;
  }

  .psa-posts {
    grid-template-columns: 1fr;
  }

  .psa-archive__head,
  .psa-article-hero__top {
    display: block;
  }

  .psa-article-site {
    margin-top: 14px;
  }
}