/* ═══════════════════════════════════════════════════════════════════════════
   PSON5 · Landing page
   Dark editorial · Fraunces (display) · Inter (UI) · JetBrains Mono (code)
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
  /* Surfaces */
  --bg-0: #09090b;
  --bg-1: #0e0f12;
  --bg-2: #141518;
  --bg-3: #1b1c21;
  --bg-elevated: #17181d;

  /* Ink */
  --ink-0: #f5f4ef;
  --ink-1: #b8b6ae;
  --ink-2: #7d7b73;
  --ink-3: #52514c;
  --ink-4: #33322e;

  /* Hairlines */
  --hair-soft: rgba(245, 244, 239, 0.06);
  --hair: rgba(245, 244, 239, 0.09);
  --hair-strong: rgba(245, 244, 239, 0.16);

  /* Accent + layer grammar */
  --accent: #b6ff5c;
  --accent-dim: #7cc038;
  --accent-glow: rgba(182, 255, 92, 0.22);
  --accent-wash: rgba(182, 255, 92, 0.08);

  --observed: #f5c76a;
  --inferred: #b6ff5c;
  --simulated: #8ec7ff;

  --observed-soft: rgba(245, 199, 106, 0.14);
  --inferred-soft: rgba(182, 255, 92, 0.14);
  --simulated-soft: rgba(142, 199, 255, 0.14);

  /* Typography */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* Rhythm */
  --shell-max: 1280px;
  --shell-gutter: clamp(20px, 4vw, 48px);
  --section-v: clamp(80px, 11vw, 140px);
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 18px;
}

/* ─── Reset ───────────────────────────────────────────────────────────── */

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

html {
  color-scheme: dark;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--ink-0);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  font-weight: 400;
  letter-spacing: -0.005em;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 60% 40% at 20% 0%, rgba(182, 255, 92, 0.04), transparent 60%),
    radial-gradient(ellipse 50% 30% at 100% 100%, rgba(142, 199, 255, 0.03), transparent 60%);
}

img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  background: var(--accent);
  color: var(--bg-0);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus { left: 16px; z-index: 100; }

/* ─── Shell ───────────────────────────────────────────────────────────── */

.shell {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--shell-gutter);
}

/* ─── Typography helpers ──────────────────────────────────────────────── */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--ink-3);
}
.eyebrow--accent { color: var(--accent); }
.eyebrow--accent::before { background: var(--accent); }
.eyebrow--muted { color: var(--ink-3); }
.eyebrow--muted::before { background: var(--ink-4); }

/* ─── Header ──────────────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  background: rgba(9, 9, 11, 0.78);
  border-bottom: 1px solid var(--hair);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.025em;
  color: var(--ink-0);
}

.wordmark em {
  font-style: italic;
  color: var(--accent);
  font-variation-settings: "SOFT" 100;
  font-weight: 400;
}

.wordmark__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  animation: pulse 2.4s ease-in-out infinite;
}

.wordmark__version {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-left: 4px;
}

@keyframes pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links > a {
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-1);
  transition: color 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-links > a:hover { color: var(--ink-0); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--accent);
  background: var(--accent-wash);
  border-radius: 100px;
  color: var(--accent) !important;
  font-weight: 600 !important;
  transition: background 0.15s ease;
}
.nav-cta:hover { background: var(--accent-glow); }

/* ─── Buttons ─────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-0);
}
.btn--primary:hover {
  transform: translateY(-1px);
  background: #c7ff77;
}

.btn--ghost {
  background: transparent;
  color: var(--ink-0);
  border-color: var(--hair-strong);
}
.btn--ghost:hover {
  border-color: var(--ink-2);
  background: var(--hair-soft);
}

/* ─── Inline snippet ──────────────────────────────────────────────────── */

.snippet-inline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px 11px 18px;
  background: var(--bg-1);
  border: 1px solid var(--hair-strong);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--ink-0);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.snippet-inline:hover {
  border-color: var(--accent);
  background: var(--bg-2);
}
.snippet-inline__prompt { color: var(--ink-3); }
.snippet-inline__cmd em {
  color: var(--accent);
  font-style: normal;
}
.snippet-inline__copy {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding: 2px 10px;
  border: 1px solid var(--hair);
  border-radius: 100px;
  margin-left: 4px;
}
.snippet-inline[data-copied="true"] .snippet-inline__copy {
  color: var(--accent);
  border-color: var(--accent);
}
.snippet-inline--large {
  padding: 16px 22px;
  font-size: 15.5px;
}

/* ─── Hero ────────────────────────────────────────────────────────────── */

.hero {
  padding-top: clamp(80px, 10vw, 140px);
  padding-bottom: clamp(80px, 10vw, 140px);
}

.hero__grid {
  display: grid;
  gap: 60px;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  align-items: center;
}

@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
}

.hero__eyebrow-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.hero__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(44px, 6.4vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin: 0 0 28px;
  color: var(--ink-0);
  font-variation-settings: "opsz" 144;
  font-feature-settings: "ss01";
  max-width: 16ch;
}

.hero__title em {
  font-style: italic;
  color: var(--accent);
  font-variation-settings: "SOFT" 100, "opsz" 144;
  font-weight: 400;
}

.hero__lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-1);
  max-width: 52ch;
  margin: 0 0 36px;
}

.hero__lede code {
  font-family: var(--font-mono);
  font-size: 14.5px;
  background: var(--bg-2);
  padding: 2px 7px;
  border-radius: 4px;
  color: var(--accent);
  border: 1px solid var(--hair);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 52px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--hair);
  margin: 0;
  max-width: 520px;
}

.hero__stats > div { margin: 0; }

.hero__stats dt {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 8px;
}

.hero__stats dd {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--ink-0);
  margin: 0;
  line-height: 1;
}

.hero__stats dd span {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-2);
  font-weight: 400;
  margin-left: 2px;
}

/* Hero visual — the three lanes */

.hero__visual {
  background: var(--bg-1);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, var(--accent-wash), transparent 60%);
  pointer-events: none;
}

.lanes { display: flex; flex-direction: column; gap: 18px; position: relative; }

.lane {
  padding: 16px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--hair);
  background: var(--bg-2);
  position: relative;
}

.lane--observed { border-left: 2px solid var(--observed); background: linear-gradient(to right, var(--observed-soft), var(--bg-2) 30%); }
.lane--inferred { border-left: 2px solid var(--inferred); background: linear-gradient(to right, var(--inferred-soft), var(--bg-2) 30%); }
.lane--simulated { border-left: 2px solid var(--simulated); background: linear-gradient(to right, var(--simulated-soft), var(--bg-2) 30%); }

.lane__label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 2px;
}
.lane--observed .lane__label { color: var(--observed); }
.lane--inferred .lane__label { color: var(--inferred); }
.lane--simulated .lane__label { color: var(--simulated); }

.lane__label span {
  font-family: var(--font-mono);
  color: var(--ink-3);
  font-size: 10px;
  font-weight: 500;
}

.lane__sub {
  font-size: 12px;
  color: var(--ink-2);
  margin-bottom: 12px;
}

.lane__pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-1);
  background: rgba(9, 9, 11, 0.5);
  border: 1px solid var(--hair);
  padding: 5px 10px;
  border-radius: 100px;
  margin: 3px 6px 3px 0;
}

.lane__pill em {
  font-style: normal;
  color: var(--accent);
}

.lane--simulated .lane__pill em { color: var(--simulated); font-weight: 500; }

.lane__confidence {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  padding-left: 8px;
  border-left: 1px solid var(--hair);
}

/* ─── Section ─────────────────────────────────────────────────────────── */

.section {
  padding-top: var(--section-v);
  padding-bottom: var(--section-v);
  border-top: 1px solid var(--hair);
}

.section__head {
  max-width: 780px;
  margin-bottom: 64px;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 20px 0 24px;
  color: var(--ink-0);
}

.section__title em {
  font-style: italic;
  color: var(--accent);
  font-variation-settings: "SOFT" 100;
}

.section__lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-1);
  max-width: 58ch;
}

.section__lede em {
  font-style: italic;
  color: var(--accent);
}

.section__lede code {
  font-family: var(--font-mono);
  font-size: 14.5px;
  background: var(--bg-2);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--accent);
  border: 1px solid var(--hair);
}

/* ─── Problem · contrast ──────────────────────────────────────────────── */

.contrast {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 860px) {
  .contrast { grid-template-columns: 1fr; }
}

.contrast__col {
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair);
  background: var(--bg-1);
}

.contrast__col--good {
  border-color: rgba(182, 255, 92, 0.22);
  background: linear-gradient(135deg, rgba(182, 255, 92, 0.04), var(--bg-1) 70%);
}

.contrast__col--bad {
  background: linear-gradient(135deg, rgba(245, 244, 239, 0.015), var(--bg-1) 60%);
}

.contrast__header {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--hair);
}

.contrast__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contrast__list li {
  font-size: 15px;
  color: var(--ink-1);
  padding-left: 22px;
  position: relative;
  line-height: 1.5;
}

.contrast__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--ink-3);
  font-weight: 500;
}

.contrast__col--good .contrast__list li::before { color: var(--accent); }

.contrast__list code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-2);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--accent);
}

/* ─── Layers grid ─────────────────────────────────────────────────────── */

.layers-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 860px) {
  .layers-grid { grid-template-columns: 1fr; }
}

.layer-card {
  position: relative;
  padding: 32px 28px;
  background: var(--bg-1);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow: hidden;
}

.layer-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}

.layer-card--observed::before { background: var(--observed); }
.layer-card--inferred::before { background: var(--inferred); }
.layer-card--simulated::before { background: var(--simulated); }

.layer-card__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  position: relative;
}

.layer-card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--ink-3);
}

.layer-card__name {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.layer-card--observed .layer-card__name { color: var(--observed); }
.layer-card--inferred .layer-card__name { color: var(--inferred); }
.layer-card--simulated .layer-card__name { color: var(--simulated); }

.layer-card__body {
  font-size: 15px;
  color: var(--ink-1);
  margin: 0;
  position: relative;
  line-height: 1.55;
}

.layer-card__body em {
  font-style: italic;
  color: var(--ink-0);
}

.layer-card__points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.layer-card__points li {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-2);
  padding-left: 14px;
  position: relative;
  letter-spacing: 0.01em;
}

.layer-card__points li::before {
  content: "›";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--ink-3);
}

/* ─── Pipeline ────────────────────────────────────────────────────────── */

.pipeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 960px) { .pipeline { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .pipeline { grid-template-columns: 1fr; } }

.pipeline__step {
  padding: 28px 24px;
  background: var(--bg-1);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s ease, transform 0.2s ease;
  position: relative;
  overflow: hidden;
}

.pipeline__step:hover {
  border-color: var(--hair-strong);
  transform: translateY(-2px);
}

.pipeline__step::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, var(--accent-wash), transparent 60%);
  opacity: 0.35;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.pipeline__step:hover::after { opacity: 0.75; }

.pipeline__index {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--accent);
}

.pipeline__name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink-0);
}

.pipeline__desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-1);
}

.pipeline__desc code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--bg-2);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--accent);
}

/* ─── Install grid ────────────────────────────────────────────────────── */

.install-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr 1.2fr 1fr;
}

@media (max-width: 960px) { .install-grid { grid-template-columns: 1fr; } }

.install-card {
  position: relative;
  padding: 28px 26px 26px;
  background: var(--bg-1);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
}

.install-card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.install-card__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 4px 10px;
  background: var(--accent-wash);
  color: var(--accent);
  border: 1px solid rgba(182, 255, 92, 0.25);
  border-radius: 100px;
}

.install-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink-0);
}

/* ─── Code blocks ─────────────────────────────────────────────────────── */

.code {
  background: var(--bg-0);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-0);
  white-space: pre;
}

.code--large { padding: 26px 28px; font-size: 13.5px; }

.code .tok-kw  { color: #c99cff; }
.code .tok-str { color: var(--accent); }
.code .tok-num { color: var(--observed); }
.code .tok-com { color: var(--ink-3); font-style: italic; }

.code__copy {
  position: absolute;
  top: 26px;
  right: 26px;
  border: 1px solid var(--hair-strong);
  background: var(--bg-2);
  color: var(--ink-1);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.code__copy:hover { color: var(--accent); border-color: var(--accent); }
.install-card[data-copied="true"] .code__copy { color: var(--accent); border-color: var(--accent); }

/* ─── Package grid ────────────────────────────────────────────────────── */

.pkg-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.pkg-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 22px;
  background: var(--bg-1);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.pkg-card:hover {
  border-color: var(--hair-strong);
  transform: translateY(-1px);
  background: var(--bg-2);
}

.pkg-card--primary {
  background: linear-gradient(135deg, rgba(182, 255, 92, 0.05), var(--bg-1) 60%);
  border-color: rgba(182, 255, 92, 0.2);
}

.pkg-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.pkg-card__group {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.pkg-card--primary .pkg-card__group { color: var(--accent); }

.pkg-card__name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-0);
  letter-spacing: -0.005em;
}

.pkg-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-1);
  flex: 1;
}

.pkg-card__desc code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--bg-2);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--accent);
}

.pkg-card__links {
  display: flex;
  gap: 18px;
  padding-top: 4px;
  border-top: 1px solid var(--hair);
}

.pkg-card__links a {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s ease;
}

.pkg-card__links a::after {
  content: "→";
  font-family: var(--font-body);
  font-weight: 400;
}

.pkg-card__links a:hover { color: var(--accent); }

.pkg-outro {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--hair);
  display: grid;
  gap: 10px;
  color: var(--ink-2);
  font-size: 14.5px;
}

.pkg-outro a {
  color: var(--accent);
  border-bottom: 1px dotted rgba(182, 255, 92, 0.35);
  padding-bottom: 1px;
}

.pkg-outro a:hover { border-bottom-style: solid; }

/* ─── Agent integration ───────────────────────────────────────────────── */

.agent-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1.6fr 1fr;
  align-items: stretch;
}

@media (max-width: 960px) { .agent-grid { grid-template-columns: 1fr; } }

.agent-grid .code {
  position: relative;
  padding: 32px 34px;
  font-size: 13.5px;
  line-height: 1.65;
}

.agent-facts {
  display: grid;
  gap: 14px;
  grid-template-rows: repeat(3, 1fr);
}

.agent-fact {
  padding: 22px 22px;
  background: var(--bg-1);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.agent-fact__label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.agent-fact__value {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--ink-0);
  line-height: 1;
}

.agent-fact:nth-child(1) .agent-fact__value { color: var(--accent); }
.agent-fact:nth-child(2) .agent-fact__value {
  color: var(--ink-0);
  font-style: italic;
  font-variation-settings: "SOFT" 100;
}
.agent-fact:nth-child(3) .agent-fact__value { color: var(--observed); }

.agent-fact__note {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.5;
  margin-top: 4px;
}

/* ─── Principles grid ─────────────────────────────────────────────────── */

.principles-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 960px) { .principles-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .principles-grid { grid-template-columns: 1fr; } }

.principle {
  padding: 24px 22px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--bg-1);
}

.principle h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink-0);
}

.principle p {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-1);
}

.principle code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--bg-2);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--accent);
}

/* ─── CTA section ─────────────────────────────────────────────────────── */

.section--cta {
  padding-bottom: clamp(100px, 13vw, 160px);
}

.cta {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: end;
  padding: 64px 56px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--accent);
  background:
    radial-gradient(ellipse 60% 100% at 100% 100%, var(--accent-wash), transparent 60%),
    linear-gradient(135deg, var(--bg-1), var(--bg-0));
  position: relative;
  overflow: hidden;
}

@media (max-width: 860px) {
  .cta { grid-template-columns: 1fr; padding: 44px 32px; gap: 36px; }
}

.cta__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--ink-0);
  margin: 20px 0 18px;
}

.cta__title code {
  font-family: var(--font-mono);
  font-size: 0.78em;
  background: var(--bg-2);
  padding: 1px 8px;
  border-radius: 4px;
  color: var(--accent);
  border: 1px solid var(--hair);
  font-weight: 400;
}

.cta__lede {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-1);
  max-width: 52ch;
  margin: 0;
}

.cta__actions {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-end;
}

@media (max-width: 860px) { .cta__actions { align-items: flex-start; } }

/* ─── Footer ──────────────────────────────────────────────────────────── */

.site-footer {
  margin-top: 40px;
  padding-top: 60px;
  border-top: 1px solid var(--hair);
  background: linear-gradient(to bottom, transparent, rgba(182, 255, 92, 0.015));
}

.footer {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 2fr;
  gap: 60px;
  padding-bottom: 60px;
}

@media (max-width: 860px) { .footer { grid-template-columns: 1fr; gap: 40px; } }

.footer__brand { display: flex; flex-direction: column; gap: 14px; }
.footer__tagline { color: var(--ink-1); font-size: 14px; margin: 0; max-width: 32ch; }
.footer__meta { color: var(--ink-3); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; margin: 0; }
.footer__meta a { color: var(--ink-2); border-bottom: 1px dotted var(--ink-3); }
.footer__meta a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.footer__cols {
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(4, 1fr);
}

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

.footer__col h4 {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.footer__col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer__col li { font-size: 14px; }
.footer__col a {
  color: var(--ink-1);
  transition: color 0.15s ease;
  border-bottom: 1px dotted transparent;
  padding-bottom: 1px;
}
.footer__col a:hover { color: var(--accent); border-bottom-color: rgba(182, 255, 92, 0.35); }

.footer__rule { height: 1px; background: var(--hair); }

.footer__baseline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px var(--shell-gutter);
  max-width: var(--shell-max);
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  flex-wrap: wrap;
  gap: 10px;
}

.footer__baseline-right { color: var(--ink-2); }

/* ─── Selection ───────────────────────────────────────────────────────── */

::selection { background: var(--accent); color: var(--bg-0); }

/* ─── Small-screen tweaks ─────────────────────────────────────────────── */

@media (max-width: 640px) {
  .nav-links { gap: 14px; }
  .nav-links > a:not(.nav-cta) { display: none; }
  .nav-links > a[href^="https://github"] { display: inline-flex; }
}

@media (max-width: 480px) {
  .hero__stats { grid-template-columns: 1fr; gap: 22px; }
  .hero__stats dd { font-size: 28px; }
  .code__copy { top: 14px; right: 14px; }
}