/* Article reader — individual blog post. Clean centered reading column in the
   Hoplo design system. Tokens: surface rgb(245,245,242), ink rgb(23,23,23),
   reading grey rgb(64,62,60), accent rgb(0,126,199), callout pale-blue. */

.spar-page {
  --spar-ink: rgb(23, 23, 23);
  --spar-read: rgb(64, 62, 60);
  --spar-muted: rgba(38, 35, 35, 0.6);
  --spar-faint: rgba(38, 35, 35, 0.45);
  --spar-line: rgb(231, 231, 227);
  --spar-accent: rgb(0, 126, 199);
  background: rgb(245, 245, 242);
  padding-bottom: 8px;
}

/* ---- Head ------------------------------------------------------------ */
.spar-head {
  max-width: 720px;
  margin: 0 auto;
  padding: 128px 24px 0;
  text-align: center;
}
.spar-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 26px;
  font-family: var(--font-ibm-plex-mono, var(--font-mono, monospace));
  font-size: 12px;
  color: var(--spar-muted);
  text-decoration: none;
  transition: color 0.18s ease;
}
.spar-back:hover {
  color: var(--spar-ink);
}
.spar-eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-ibm-plex-mono, var(--font-mono, monospace));
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--spar-accent);
}
.spar-title {
  margin: 0 auto;
  max-width: 20ch;
  font-family: var(--font-neoris);
  font-size: 42px;
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--spar-ink);
}
.spar-meta {
  margin: 16px 0 0;
  font-family: var(--font-neoris);
  font-size: 14px;
  color: var(--spar-muted);
}
.spar-meta span {
  margin: 0 6px;
  color: var(--spar-faint);
}

/* ---- Hero banner ----------------------------------------------------- */
.spar-hero {
  position: relative;
  max-width: 1000px;
  margin: 32px auto 0;
  padding: 0 24px;
}
.spar-hero-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  object-position: center 42%;
  border-radius: 16px;
  border: 1px solid var(--spar-line);
  box-shadow: rgb(255, 255, 255) 0 2px 1px, rgba(20, 24, 22, 0.1) 0 18px 40px;
}

.spar-hero-img.is-brand-background {
  object-fit: cover;
  object-position: center;
}

.spar-hero-img.is-brand-openai {
  background: #111a19;
}

.spar-hero-img.is-brand-nvidia {
  background: #111511;
}

.spar-brand-lockup {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  transform: translate(-50%, -50%);
}

.spar-brand-lockup img {
  display: block;
  width: auto;
  object-fit: contain;
}

.spar-brand-hoplo {
  width: 142px !important;
}

.spar-brand-divider {
  width: 1px;
  height: 66px;
  background: rgba(255, 255, 255, 0.36);
}

.spar-brand-lockup.is-openai .spar-brand-partner {
  width: 190px;
}

.spar-brand-lockup.is-nvidia {
  width: min(460px, 54%);
  padding: 18px 24px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 12px;
  background: rgba(251, 251, 248, 0.94);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(12px);
}

.spar-brand-lockup.is-nvidia .spar-brand-partner {
  width: 100%;
}

/* AI Act editorial cover: typography stays crisp and is rendered in HTML,
   rather than baking regulatory text into generated imagery. */
.spar-hero--ai-act .spar-hero-img {
  filter: saturate(0.9) brightness(0.86) contrast(1.04);
}
.spar-ai-act-lockup {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 50%;
  display: grid;
  grid-template-columns: auto auto;
  align-items: end;
  gap: 2px 12px;
  transform: translate(-50%, -50%);
  color: #fff;
  text-align: left;
  text-shadow: 0 8px 30px rgba(0, 0, 0, 0.38);
}
.spar-ai-act-lockup small {
  grid-row: 1;
  font: 500 18px/1 var(--font-ibm-plex-mono, monospace);
  letter-spacing: 0.14em;
}
.spar-ai-act-lockup strong {
  grid-column: 2;
  grid-row: 1 / span 2;
  font: 450 72px/0.84 var(--font-neoris);
  letter-spacing: -0.05em;
  white-space: nowrap;
}
.spar-ai-act-lockup em {
  grid-column: 1;
  grid-row: 2;
  font: 500 10px/1 var(--font-ibm-plex-mono, monospace);
  letter-spacing: 0.13em;
  font-style: normal;
}
.spar-ai-generated-badge {
  position: absolute;
  z-index: 3;
  right: 36px;
  bottom: 12px;
  padding: 6px 8px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: rgba(4, 20, 40, 0.5);
  color: rgba(255, 255, 255, 0.86);
  font: 500 9px/1 var(--font-ibm-plex-mono, monospace);
  backdrop-filter: blur(10px);
}

/* ---- Body ------------------------------------------------------------ */
.spar-body {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 24px 0;
}
.spar-lead {
  margin: 0 0 28px;
  font-family: var(--font-neoris);
  font-size: 20px;
  line-height: 1.55;
  color: var(--spar-ink);
}
.spar-p {
  margin: 0 0 22px;
  font-family: var(--font-neoris);
  font-size: 17px;
  line-height: 1.72;
  color: var(--spar-read);
}
.spar-h2 {
  margin: 44px 0 16px;
  font-family: var(--font-neoris);
  font-size: 24px;
  line-height: 1.25;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--spar-ink);
}
.spar-list {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}
.spar-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
  font-family: var(--font-neoris);
  font-size: 17px;
  line-height: 1.6;
  color: var(--spar-read);
}
.spar-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--spar-accent);
}
.spar-quote {
  margin: 28px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--spar-accent);
  font-family: var(--font-neoris);
  font-size: 19px;
  line-height: 1.55;
  font-style: italic;
  color: var(--spar-ink);
}
.spar-callout {
  margin: 32px 0;
  padding: 22px 22px 20px;
  border-radius: 16px;
  border: 1px solid rgb(215, 232, 255);
  background: rgb(247, 251, 255);
}
.spar-callout-title {
  margin: 0 0 6px;
  font-family: var(--font-ibm-plex-mono, var(--font-mono, monospace));
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--spar-accent);
}
.spar-callout-body {
  margin: 0;
  font-family: var(--font-neoris);
  font-size: 15px;
  line-height: 1.55;
  color: var(--spar-read);
}

.spar-sources-inline,
.spar-sources-inline a,
.spar-legal-note a {
  color: var(--spar-accent);
  text-underline-offset: 3px;
}
.spar-sources-inline {
  font-size: 14.5px;
}
.spar-deployment-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 26px 0 32px;
}
.spar-deployment-grid section {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--spar-line);
  border-radius: 14px;
  background: rgba(251, 251, 248, 0.86);
}
.spar-deployment-grid span,
.spar-numbered-list > li > span {
  font: 500 11px/1 var(--font-ibm-plex-mono, monospace);
  color: var(--spar-accent);
}
.spar-deployment-grid h3 {
  margin: 10px 0 7px;
  font: 500 17px/1.2 var(--font-neoris);
  color: var(--spar-ink);
}
.spar-deployment-grid p {
  margin: 0;
  font: 400 14.5px/1.52 var(--font-neoris);
  color: var(--spar-muted);
}
.spar-numbered-list {
  display: grid;
  gap: 10px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}
.spar-numbered-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding: 16px 18px;
  border-top: 1px solid var(--spar-line);
}
.spar-numbered-list strong {
  font: 500 16px/1.25 var(--font-neoris);
  color: var(--spar-ink);
}
.spar-numbered-list p {
  margin: 4px 0 0;
  font: 400 14.5px/1.5 var(--font-neoris);
  color: var(--spar-muted);
}
.spar-legal-note {
  margin: 44px 0 0;
  padding: 18px 20px;
  border-left: 3px solid rgba(38, 35, 35, 0.3);
  background: rgba(231, 231, 227, 0.55);
  font: 400 13px/1.6 var(--font-neoris);
  color: var(--spar-muted);
}

/* ---- CTA ------------------------------------------------------------- */
.spar-cta {
  max-width: 680px;
  margin: 8px auto 0;
  padding: 40px 24px 96px;
  border-top: 1px solid var(--spar-line);
  margin-top: 56px;
}
.spar-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 18px;
  border-radius: 8px;
  background: rgb(23, 23, 23);
  color: #fff;
  font-family: var(--font-neoris);
  font-size: 15px;
  text-decoration: none;
  border: 1px solid rgb(56, 56, 56);
  box-shadow: 0 0 0 1px rgba(64, 64, 64, 0.12), inset 0 2px 0 rgba(255, 255, 255, 0.24), 0 3px 4px rgba(0, 0, 0, 0.16);
  transition: transform 0.18s ease;
}
.spar-cta-btn:hover {
  transform: translateY(-1px);
}

/* ---- Responsive ------------------------------------------------------ */
@media (max-width: 760px) {
  .spar-head {
    padding-top: 104px;
  }
  .spar-title {
    font-size: 30px;
  }
  .spar-hero-img {
    height: 240px;
  }
  .spar-brand-lockup {
    gap: 12px;
  }
  .spar-brand-hoplo {
    width: 82px !important;
  }
  .spar-brand-divider {
    height: 40px;
  }
  .spar-brand-lockup.is-openai .spar-brand-partner {
    width: 108px;
  }
  .spar-brand-lockup.is-nvidia {
    width: min(290px, 72%);
    padding: 11px 15px;
  }
  .spar-body {
    padding-top: 40px;
  }
  .spar-lead {
    font-size: 18px;
  }
  .spar-p,
  .spar-list li {
    font-size: 16px;
  }
  .spar-ai-act-lockup strong {
    font-size: 43px;
  }
  .spar-ai-act-lockup small {
    font-size: 13px;
  }
  .spar-deployment-grid {
    grid-template-columns: 1fr;
  }
  .spar-ai-generated-badge {
    right: 32px;
    bottom: 8px;
    font-size: 8px;
  }
}