@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Serif:wght@400;500&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  --paper: #f5f5f3;
  --white: #ffffff;
  --ink: #141c2e;
  --ink-2: #4f5665;
  --ink-3: #8d93a0;
  --rule: #d9dbde;
  --accent: #b8261f;
  --serif: 'IBM Plex Serif', Georgia, serif;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --wrap: 72rem;
  --edge: clamp(1.25rem, 5vw, 4rem);
}

* { box-sizing: border-box; }
html { background: var(--paper); scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); font-family: var(--sans); font-size: 1.0625rem; line-height: 1.55; -webkit-font-smoothing: antialiased; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; margin: 0; line-height: 1.15; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--edge); }
.bar { display: flex; justify-content: space-between; align-items: center; gap: 2rem; }

.button { display: inline-block; font: 500 1rem var(--sans); color: var(--white); background: var(--ink); padding: 0.85rem 1.4rem; border: 0; border-radius: 3px; cursor: pointer; white-space: nowrap; }
.button:hover { background: var(--accent); }
.button:disabled { background: var(--ink-3); cursor: default; }
.button.small { padding: 0.55rem 1rem; font-size: 0.9375rem; }
.link { font-weight: 500; border-bottom: 1px solid var(--rule); padding-bottom: 2px; }
.link:hover { border-color: var(--accent); }

/* masthead */
.masthead { position: sticky; top: 0; z-index: 10; background: rgba(245,245,243,0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); }
.masthead .bar { padding-top: 1rem; padding-bottom: 1rem; }
.masthead .name { font-family: var(--serif); font-size: 1.125rem; }
.masthead nav { display: flex; align-items: center; gap: 1.5rem; color: var(--ink-2); font-size: 0.9375rem; }
.masthead nav a:hover { color: var(--ink); }

/* hero */
.hero { padding: 7rem 0 6rem; }
.hero .wrap { max-width: var(--wrap); }
.kicker { font-weight: 500; color: var(--accent); margin-bottom: 1.25rem; }
.hero h1 { font-size: clamp(2.25rem, 5.2vw, 3.75rem); letter-spacing: -0.015em; max-width: 20ch; text-wrap: balance; }
.lede { font-size: 1.25rem; color: var(--ink-2); max-width: 40rem; margin: 1.75rem 0 2.25rem; }
.actions { display: flex; align-items: center; gap: 1.75rem; flex-wrap: wrap; }

/* credential strip */
.creds { background: var(--white); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.creds .grid4 { display: grid; grid-template-columns: repeat(4, 1fr); }
.creds .grid4 > div { padding: 1.75rem 1.5rem 1.75rem 0; display: flex; flex-direction: column; gap: 0.25rem; }
.creds .grid4 > div + div { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.creds strong { font-family: var(--serif); font-weight: 400; font-size: 1.5rem; }
.creds span { color: var(--ink-2); font-size: 0.9375rem; }

/* sections */
section { padding: 7rem 0; }
section + section:not(.band):not(.creds):not(.contact):not(.situation) { border-top: 1px solid var(--rule); }
section h2 { font-size: clamp(1.9rem, 3vw, 2.625rem); margin-bottom: 1.25rem; letter-spacing: -0.01em; }
.intro { font-size: 1.1875rem; color: var(--ink-2); max-width: 42rem; margin-bottom: 3.5rem; }
.intro.after { margin: 2.5rem 0 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem 5rem; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3.5rem 3rem; }
h3 { font-size: 1.375rem; margin-bottom: 0.7rem; }
.services p, .models p, .why p, .work p { color: var(--ink-2); }
.services div, .models div { padding-top: 1.25rem; border-top: 2px solid var(--ink); }
.icon { display: block; width: 44px; height: 44px; margin-bottom: 1.1rem; fill: none; stroke: var(--ink); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.icon .ac { stroke: var(--accent); }
.icon .ok { stroke: #2f9e6b; }
.band .icon { stroke: var(--white); }
.band .icon .ac { stroke: #e05a52; }
.models .meta { color: var(--ink); font-weight: 500; font-size: 0.9375rem; margin-bottom: 0.75rem; }

/* band */
.band { background: var(--ink); color: var(--paper); }
.band h2 { color: var(--white); margin-bottom: 3rem; }
.band .why p { color: #c9cdd6; }
.band .why h3 { color: var(--white); }

/* work */
.work { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 4rem; }
.work li { padding: 1.5rem 0; border-top: 1px solid var(--rule); }
.work h3 { font-size: 1.25rem; margin-bottom: 0.4rem; }

/* faq */
.faq { margin: 0; max-width: 46rem; }
.faq div { padding: 1.4rem 0; border-top: 1px solid var(--rule); display: grid; grid-template-columns: 16rem 1fr; gap: 1.5rem; }
.faq dt { font-weight: 500; }
.faq dd { margin: 0; color: var(--ink-2); }

/* notes */
.notes { list-style: none; margin: 0; padding: 0; max-width: 46rem; }
.notes li { display: flex; justify-content: space-between; gap: 2rem; padding: 0.9rem 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.notes a { font-family: var(--serif); font-size: 1.25rem; }
.notes a:hover { color: var(--accent); }
.notes time { color: var(--ink-3); white-space: nowrap; }

/* contact */
.contact { background: var(--white); border-top: 1px solid var(--rule); }
.contact .intro { margin-bottom: 0; }
form { display: grid; gap: 1.25rem; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
label { display: block; font-weight: 500; margin-bottom: 0.35rem; font-size: 0.9375rem; }
input, textarea { display: block; width: 100%; font: 1.0625rem var(--sans); color: var(--ink); background: var(--paper); border: 1px solid var(--rule); border-radius: 3px; padding: 0.7rem 0.85rem; resize: vertical; }
textarea { min-height: 8rem; line-height: 1.5; }
input:focus, textarea:focus { outline: none; border-color: var(--ink); background: var(--white); }
.form-foot { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.form-status { color: var(--ink-2); font-size: 0.9375rem; }
.form-status[data-state="error"] { color: var(--accent); }

footer { border-top: 1px solid var(--rule); padding: 2rem 0 2.5rem; color: var(--ink-2); font-size: 0.9375rem; }
footer a { font-weight: 500; color: var(--ink); }

/* article pages */
.article .hero { padding: 4.5rem 0 2rem; }
.article .hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); max-width: 24ch; }
.article .hero p { margin: 1rem 0 0; color: var(--ink-3); }
.article .body { max-width: 40rem; font-family: var(--serif); font-size: 1.1875rem; line-height: 1.6; padding-top: 0; }
.article .body p + p, .article .body ul + p, .article .body p + ul { margin-top: 1.1rem; }
.article .body h2 { font-size: 1.5rem; margin: 2.5rem 0 0.8rem; }
.article .body ul { padding-left: 1.2rem; margin: 0; }
.article .body li { margin-bottom: 0.5rem; }
.article .body strong { font-weight: 500; }
.article .aside { font-family: var(--sans); font-size: 0.9375rem; color: var(--ink-2); border-left: 2px solid var(--accent); padding-left: 1rem; margin-top: 3rem; }
.back { display: inline-block; margin-top: 2.5rem; font-weight: 500; }

@media (max-width: 68rem) {
  .masthead nav a:not(.button) { display: none; }
  .masthead .socials { display: none; }
  .grid3 { grid-template-columns: 1fr 1fr; }
  .work { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 52rem) {
  .hero { padding: 4rem 0 3.5rem; }
  section { padding: 4.5rem 0; }
  .creds .grid4 { grid-template-columns: 1fr 1fr; }
  .creds .grid4 > div + div { border-left: 0; padding-left: 0; }
  .creds .grid4 > div:nth-child(even) { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
  .grid2, .grid3, .work, .two, .hero-grid, .feature { grid-template-columns: 1fr; }
  .hero-grid { gap: 2.5rem; }
  .hero-grid { text-align: center; justify-items: center; }
  .hero h1, .lede { margin-left: auto; margin-right: auto; }
  .actions { justify-content: center; }
  .portrait { order: -1; justify-self: center; max-width: 10rem; aspect-ratio: 1 / 1; border-radius: 50%; }
  .faq div { grid-template-columns: 1fr; gap: 0.4rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---- additions: hero portrait, personas, diagrams, feature, table ---- */
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 4rem; align-items: center; }
.portrait { margin: 0; position: relative; aspect-ratio: 4 / 5; max-width: 22rem; justify-self: end; width: 100%; background: #e6e8e6; border: 1px solid var(--rule); border-radius: 3px; overflow: hidden; display: grid; place-items: center; }
.portrait span { color: var(--ink-3); font-size: 0.9375rem; }
.portrait img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 15%; }



.feature { margin-top: 4rem; padding-top: 3rem; border-top: 2px solid var(--ink); display: grid; grid-template-columns: 1.1fr 1fr; gap: 3rem 4rem; align-items: start; }
.feature h3 { font-size: 1.5rem; margin-bottom: 1rem; }
.feature p { color: var(--ink-2); }
.feature p + p { margin-top: 1rem; }
.feature .viz { margin: 0; }

.band .intro { color: #c9cdd6; }

@media (max-width: 68rem) {
  .masthead nav a:not(.button) { display: none; }
  .masthead .socials { display: none; }
  .grid3 { grid-template-columns: 1fr 1fr; }
  .work { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 52rem) {
  .hero { padding: 4rem 0 3.5rem; }
  section { padding: 4.5rem 0; }
  .creds .grid4 { grid-template-columns: 1fr 1fr; }
  .creds .grid4 > div + div { border-left: 0; padding-left: 0; }
  .creds .grid4 > div:nth-child(even) { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
  .grid2, .grid3, .work, .two, .hero-grid, .feature { grid-template-columns: 1fr; }
  .hero-grid { gap: 2.5rem; }
  .hero-grid { text-align: center; justify-items: center; }
  .hero h1, .lede { margin-left: auto; margin-right: auto; }
  .actions { justify-content: center; }
  .portrait { order: -1; justify-self: center; max-width: 10rem; aspect-ratio: 1 / 1; border-radius: 50%; }
  .faq div { grid-template-columns: 1fr; gap: 0.4rem; }
}

/* ---- canvas visualisations ---- */
.viz { margin: 0 0 4rem; background: var(--ink); border-radius: 4px; overflow: hidden; }
.viz canvas { display: block; width: 100%; aspect-ratio: 960 / 380; }
.viz.tall canvas { aspect-ratio: 520 / 420; }
.viz.airy canvas { aspect-ratio: 960 / 460; }
.viz figcaption { display: grid; grid-template-columns: 14rem 1fr; gap: 1.5rem; padding: 1rem 1.5rem 1.1rem; border-top: 1px solid rgba(255,255,255,0.12); color: #aeb4c0; font-size: 0.9375rem; }
.viz figcaption span:first-child { color: var(--white); font-weight: 500; }
@media (max-width: 52rem) { .viz figcaption { grid-template-columns: 1fr; gap: 0.3rem; } .viz canvas { aspect-ratio: 960 / 620; } .viz.airy canvas { aspect-ratio: 960 / 900; } .creds strong { font-size: 1.25rem; } }

/* ---- situations ---- */
.who-intro { padding-bottom: 1rem; }
.who-intro .intro { margin-bottom: 0; }
.who-intro .intro + .intro { margin-top: 1rem; color: var(--ink); }
.situation { padding: 4.5rem 0; }
.situation + .situation { border-top: 1px solid var(--rule); }
.situation-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 4rem; align-items: center; }
.situation.flip .viz { order: -1; }
.situation .kicker { margin-bottom: 0.75rem; font-size: 0.9375rem; }
.situation h3 { font-size: clamp(1.5rem, 2.4vw, 2rem); margin-bottom: 1.1rem; }
.situation blockquote { margin: 0 0 1.1rem; padding-left: 1rem; border-left: 2px solid var(--accent); font-family: var(--serif); font-size: 1.1875rem; line-height: 1.5; }
.situation .copy p { color: var(--ink-2); }
.situation .copy p + p { margin-top: 0.9rem; }
.situation .copy strong { color: var(--ink); font-weight: 500; }
.viz.small { margin: 0; }
.viz.small canvas { aspect-ratio: 520 / 300; }
.viz.small figcaption { grid-template-columns: 1fr; gap: 0.25rem; padding: 0.9rem 1.25rem 1rem; }
@media (max-width: 52rem) { .situation-grid { grid-template-columns: 1fr; gap: 2rem; } .situation.flip .viz { order: 0; } .situation { padding: 3rem 0; } .viz.small canvas { aspect-ratio: 520 / 320; } }

/* ---- about ---- */
.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4rem; align-items: start; }
.about-grid .prose p { color: var(--ink-2); font-size: 1.125rem; }
.about-grid .prose p + p { margin-top: 1rem; }
.facts { margin: 0; padding-top: 0.6rem; }
.facts div { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem; padding: 0.85rem 0; border-top: 1px solid var(--rule); }
.facts div:last-child { border-bottom: 1px solid var(--rule); }
.facts dt { color: var(--ink-3); }
.facts dd { margin: 0; }
.facts a, .foot-links a { font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--rule); }
.facts a:hover, .foot-links a:hover { border-color: var(--accent); }
.foot-links { display: flex; gap: 1.5rem; align-items: center; }
.socials { display: inline-flex; gap: 0.9rem; align-items: center; vertical-align: middle; }
.social { display: inline-flex; width: 20px; height: 20px; color: var(--ink-2); border: 0; }
.social:hover { color: var(--accent); }
.social svg { width: 100%; height: 100%; fill: currentColor; }
.masthead .socials { margin-left: 0.25rem; }
.masthead .social { color: var(--ink-2); }
@media (max-width: 52rem) { .about-grid { grid-template-columns: 1fr; gap: 2rem; } }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }