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

:root {
  --afp-surface: #eef2f5;
  --afp-panel: #fbfcfd;
  --afp-ink: #111827;
  --afp-muted: #5f6b7a;
  --afp-line: #c9d1db;
  --afp-blue: #193f73;
  --afp-signal: #c9372c;
  --afp-green: #dfeee4;
  --afp-yellow: #f0cf72;
  --afp-shadow: #d8dee6;
  --afp-font: Aptos, Calibri, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --afp-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

body {
  margin: 0;
  background: var(--afp-surface);
  color: var(--afp-ink);
  font-family: var(--afp-font);
  line-height: 1.5;
}

a { color: inherit; }

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

.afp-hero {
  padding: 28px 0 34px;
}

.afp-navline,
.article-return {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  border-bottom: 2px solid var(--afp-ink);
  padding: 0 0 14px;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.afp-mark {
  font-weight: 900;
}

.afp-editor,
.article-return span {
  color: var(--afp-muted);
}

.afp-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) 360px;
  gap: 22px;
  align-items: stretch;
  padding-top: 26px;
}

.afp-hero-copy,
.afp-priority-slab,
.afp-firstline,
.afp-diagnostics,
.afp-feature,
.afp-compression,
.afp-archive,
.article-stage,
.projection-brief {
  background: var(--afp-panel);
  border: 1px solid var(--afp-line);
  box-shadow: 0 18px 0 var(--afp-shadow);
}

.afp-hero-copy {
  padding: clamp(28px, 5vw, 58px);
  position: relative;
  overflow: hidden;
}

.afp-hero-copy::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 12px;
  height: 100%;
  background: var(--afp-signal);
}

.afp-kicker,
.afp-label,
.slab-label,
.test-label,
.feature-ribbon,
.card-status,
.card-cta {
  margin: 0;
  font-family: var(--afp-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--afp-blue);
}

.afp-hero h1 {
  margin: 10px 0 16px;
  max-width: 11ch;
  font-size: clamp(3.4rem, 10vw, 8.7rem);
  line-height: 0.82;
  letter-spacing: -0.075em;
  font-weight: 900;
}

.afp-description {
  max-width: 760px;
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.55rem);
  line-height: 1.32;
  color: #263241;
}

.afp-topic-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.afp-topic-row > * {
  display: inline-flex;
  border: 1px solid var(--afp-line);
  background: #ffffff;
  padding: 7px 10px;
  font-size: 0.82rem;
  font-weight: 700;
}

.afp-priority-slab {
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 420px;
  background: #f7f9fb;
}

.topline-stack {
  display: grid;
  gap: 9px;
  width: 100%;
  padding: 4px 0 12px;
}

.topline-stack span,
.mini-topline-stack span {
  display: block;
  height: 18px;
  background: var(--afp-ink);
  border-left: 10px solid var(--afp-signal);
}

.topline-stack span:nth-child(1) { width: 100%; }
.topline-stack span:nth-child(2) { width: 78%; }
.topline-stack span:nth-child(3) { width: 55%; }
.topline-stack span:nth-child(4) { width: 31%; }

.slab-answer {
  margin: 30px 0 0;
  font-size: 2.05rem;
  line-height: 1;
  letter-spacing: -0.045em;
  font-weight: 900;
}

.slab-note {
  margin: 18px 0 0;
  color: var(--afp-muted);
  font-size: 0.98rem;
}

.afp-firstline {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) minmax(240px, 0.6fr);
  gap: 24px;
  margin-top: 26px;
  padding: 28px;
  align-items: start;
}

.section-number {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border: 2px solid var(--afp-ink);
  background: var(--afp-yellow);
  font-family: var(--afp-mono);
  font-weight: 800;
}

.afp-firstline h2,
.afp-diagnostics h2,
.afp-compression h2,
.archive-head h2 {
  margin: 5px 0 0;
  font-size: clamp(1.8rem, 4vw, 3.8rem);
  line-height: 0.96;
  letter-spacing: -0.055em;
}

.afp-firstline > p {
  margin: 0;
  color: #344154;
  font-size: 1.05rem;
}

.afp-diagnostics,
.afp-compression,
.afp-archive {
  margin-top: 34px;
  padding: 28px;
}

.diagnostic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.diagnostic-grid article {
  border: 1px solid var(--afp-line);
  background: #ffffff;
  padding: 18px;
  min-height: 190px;
}

.check-code {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  height: 30px;
  background: var(--afp-green);
  border: 1px solid #b7d2bf;
  font-family: var(--afp-mono);
  font-size: 0.75rem;
  font-weight: 800;
}

.diagnostic-grid h3 {
  margin: 18px 0 8px;
  font-size: 1.32rem;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.diagnostic-grid p,
.afp-compression p,
.feature-copy p,
.feature-test li {
  color: #344154;
}

.afp-feature {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 290px;
  gap: 22px;
  align-items: stretch;
  margin-top: 34px;
  padding: 0;
  overflow: hidden;
}

.feature-ribbon {
  background: var(--afp-signal);
  color: #ffffff;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  display: grid;
  place-items: center;
  padding: 20px;
}

.feature-copy {
  padding: 30px 0;
}

.feature-copy h2 {
  margin: 8px 0 14px;
  font-size: clamp(2rem, 4.6vw, 4.8rem);
  line-height: 0.9;
  letter-spacing: -0.065em;
}

.feature-test {
  margin: 18px 18px 18px 0;
  border: 1px solid var(--afp-line);
  background: #ffffff;
  padding: 18px;
}

.feature-test ol {
  margin: 18px 0 0;
  padding-left: 20px;
}

.feature-test li + li {
  margin-top: 12px;
}

.afp-compression {
  border-left: 12px solid var(--afp-blue);
}

.afp-compression p {
  max-width: 760px;
  font-size: 1.12rem;
}

.archive-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  border-bottom: 1px solid var(--afp-line);
  padding-bottom: 18px;
}

.afp-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.afp-post-card {
  min-height: 280px;
}

.post-card-link {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 18px;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid var(--afp-line);
  border-top: 8px solid var(--afp-ink);
}

.post-card-link:hover,
.post-card-link:focus {
  border-top-color: var(--afp-signal);
  outline: 2px solid var(--afp-signal);
  outline-offset: 3px;
}

.card-topline {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  color: var(--afp-muted);
  font-family: var(--afp-mono);
  font-size: 0.72rem;
}

.afp-post-card h3 {
  margin: 20px 0 12px;
  font-size: 1.55rem;
  line-height: 1.02;
  letter-spacing: -0.045em;
}

.afp-post-card p {
  margin: 0;
  color: #3c4756;
}

.mini-topline-stack {
  display: grid;
  gap: 5px;
  margin-top: auto;
  padding-top: 24px;
}

.mini-topline-stack span {
  height: 8px;
}

.mini-topline-stack span:nth-child(1) { width: 78%; }
.mini-topline-stack span:nth-child(2) { width: 52%; }
.mini-topline-stack span:nth-child(3) { width: 28%; }

.card-cta {
  display: inline-block;
  margin-top: 14px;
  color: var(--afp-signal);
}

.article-stage {
  margin-top: 28px;
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.article-return {
  border-bottom: 1px solid var(--afp-line);
  margin-bottom: 28px;
}

.article-return a {
  font-weight: 900;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.article-stage h1 {
  max-width: 930px;
  margin: 10px 0 16px;
  font-size: clamp(2.8rem, 7vw, 7rem);
  line-height: 0.86;
  letter-spacing: -0.075em;
}

.article-meta {
  color: var(--afp-muted);
  font-family: var(--afp-mono);
  font-size: 0.8rem;
}

.article-stack {
  max-width: 420px;
  margin-top: 30px;
}

.projection-brief {
  display: grid;
  grid-template-columns: 180px minmax(0, 720px) 260px;
  gap: 24px;
  align-items: start;
  margin: 34px 0 70px;
  padding: 24px;
}

.read-order,
.answer-standard {
  border: 1px solid var(--afp-line);
  background: #ffffff;
  padding: 16px;
}

.read-order h2,
.answer-standard h2 {
  margin: 0 0 14px;
  font-family: var(--afp-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--afp-blue);
}

.read-order ol,
.answer-standard ul {
  margin: 0;
  padding-left: 20px;
}

.read-order li,
.answer-standard li {
  margin: 10px 0;
}

.article-body {
  background: #ffffff;
  border: 1px solid var(--afp-line);
  padding: clamp(24px, 5vw, 54px);
  font-size: 1.08rem;
  line-height: 1.72;
}

.article-body > *:first-child {
  margin-top: 0;
  font-size: 1.42rem;
  line-height: 1.42;
  font-weight: 800;
  color: var(--afp-ink);
}

.article-body h2,
.article-body h3 {
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-top: 2.1em;
}

.article-body h2 { font-size: 2rem; }
.article-body h3 { font-size: 1.45rem; }

.article-body p,
.article-body li {
  color: #283443;
}

.article-body blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  border-left: 8px solid var(--afp-signal);
  background: #f5f7f9;
  font-weight: 800;
}

.article-body code {
  font-family: var(--afp-mono);
  font-size: 0.9em;
  background: #eef2f5;
  padding: 0.1em 0.25em;
}

.answer-standard p {
  margin-top: 0;
  color: #344154;
}

@media (max-width: 980px) {
  .afp-hero-grid,
  .afp-firstline,
  .afp-feature,
  .projection-brief {
    grid-template-columns: 1fr;
  }

  .afp-priority-slab {
    min-height: 0;
  }

  .feature-ribbon {
    writing-mode: horizontal-tb;
    transform: none;
  }

  .feature-copy,
  .feature-test {
    margin: 0;
    padding: 22px;
  }

  .diagnostic-grid,
  .afp-card-grid {
    grid-template-columns: 1fr;
  }

  .archive-head {
    display: block;
  }
}

@media (max-width: 620px) {
  .afp-home,
  .afp-article {
    width: min(100% - 20px, 1180px);
  }

  .afp-navline,
  .article-return,
  .card-topline {
    align-items: flex-start;
    flex-direction: column;
  }

  .afp-hero-copy,
  .afp-firstline,
  .afp-diagnostics,
  .afp-compression,
  .afp-archive,
  .article-stage,
  .projection-brief {
    padding: 18px;
  }

  .afp-hero h1,
  .article-stage h1 {
    letter-spacing: -0.06em;
  }
}