:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-soft: #11161e;
  --text: #ffffff;
  --text-soft: #ffffff;
  --muted: #8b949e;
  --muted-2: #6e7681;
  --accent: #f78166;
  --accent-soft: #ffa28b;
  --rule: #30363d;
  --rule-soft: #21262d;

  --serif: "Source Serif 4", "Source Serif Pro", "Iowan Old Style", "Charter", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;

  --content-width: 1440px;
  --main-pad-top: 3rem;
  --main-pad: 1.5rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 20px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* ---------- Default link styling ---------- */
a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(247, 129, 102, 0.4);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}
a:hover {
  color: var(--accent-soft);
  text-decoration-color: var(--accent);
}
/* Nav-style links opt out of the default treatment */
.scenario-btn, .scenario-btn:hover,
.nav-list a, .nav-list a:hover {
  text-decoration: none;
}

/* ---------- Background decoration ---------- */
.bg-decor {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  color: var(--accent);
  opacity: 0.08;
}
.bg-decor svg {
  position: absolute;
  width: 60vw;
  height: auto;
}
.bg-us {
  top: 8vh;
  left: -8vw;
  transform: rotate(-4deg);
}
.bg-cn {
  bottom: 4vh;
  right: -10vw;
  transform: rotate(3deg);
}

/* ---------- Floating scenario nav ---------- */
.site-nav {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 50;
}

/* ---- Collapsed toggle button (hidden at top, shown once scrolled) ---- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: rgba(22, 27, 34, 0.9);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 0.5rem 0.85rem 0.5rem 0.7rem;
  color: var(--text-soft);
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: border-color 0.18s ease, color 0.18s ease;
  font-family: var(--sans);
}
.nav-toggle:hover { border-color: var(--accent); }
.nav-toggle-icon {
  width: 16px;
  height: 12px;
  color: var(--accent);
  flex-shrink: 0;
}
.nav-toggle-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.nav-toggle:hover .nav-toggle-label { color: var(--text-soft); }

/* ---- Expanded panel ---- */
.nav-panel {
  background: rgba(22, 27, 34, 0.92);
  border: 1px solid var(--rule-soft);
  border-radius: 10px;
  padding: 1rem 1.1rem 1.1rem;
  backdrop-filter: blur(10px);
  min-width: 164px;
}
.nav-label {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.68rem;
  color: var(--accent);
  margin: 0 0 0.85rem;
  font-weight: 600;
  transition: color 0.25s ease;
}
body.in-section .nav-label,
body.is-scrolled .nav-label {
  color: var(--muted-2);
}
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--rule-soft);
}
.nav-list li { margin: 0; }
.nav-list a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0 0.45rem 0.9rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  position: relative;
  transition: color 0.18s ease;
}
.nav-list a:hover { color: var(--text-soft); }
.nav-list .dot {
  position: absolute;
  left: -4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--rule);
  transition: background 0.2s ease, transform 0.2s ease;
}
.nav-list a:hover .dot { background: var(--muted); }
.nav-list a.active {
  color: var(--accent);
  background: rgba(247, 129, 102, 0.12);
  border-radius: 4px;
}
.nav-list a.active .dot {
  background: var(--accent);
  transform: scale(1.4);
  box-shadow: 0 0 0 4px rgba(247, 129, 102, 0.25);
}

.nav-item--meta { margin-top: 0.5rem; padding-top: 0.5rem; border-top: 1px solid var(--rule-soft); }
.nav-item--meta a {
  font-size: 0.8rem;
  color: var(--muted) !important;
  background: none !important;
  padding: 0.2rem 0.5rem !important;
}
.nav-item--meta a:hover { color: var(--text-soft) !important; }

/* ---- State: scrolled → show toggle, hide panel ---- */
body.is-scrolled .nav-toggle { display: flex; }
body.is-scrolled .nav-panel { display: none; }

/* ---- State: scrolled + open → show panel as dropdown ---- */
body.is-scrolled .site-nav.is-open .nav-toggle { border-color: var(--accent); }
body.is-scrolled .site-nav.is-open .nav-panel {
  display: block;
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 0;
  animation: nav-reveal 0.14s ease;
}

@keyframes nav-reveal {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Main column ---------- */
main {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  max-width: var(--content-width);
  padding: var(--main-pad-top) var(--main-pad) 6rem;
}

/* ---------- Hero ---------- */
.hero {
  max-width: 1100px;
  min-height: calc(100vh - var(--main-pad-top));
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-bottom: 3rem;
  margin-bottom: 0;
}

.hero-inner {
  will-change: opacity, transform;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--accent);
  margin: 0 0 1rem;
  font-weight: 600;
}
h1 {
  font-family: var(--serif);
  font-size: 2.6rem;
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: #dfc9a0;
  margin: 0 0 1.5rem;
}
.thesis {
  margin: 0 0 2rem;
}
.thesis--with-list {
  margin-bottom: 0.4rem;
}
.thesis-list {
  margin: -0.5rem 0 2rem 1.25rem;
  padding: 0;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.thesis-list li {
  line-height: 1.6;
}
.hero-about-link {
  margin-top: 1rem;
  font-size: 0.88rem;
}
.hero-about-link a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-soft);
  transition: color 0.15s;
}
.hero-about-link a:hover { color: var(--text); }
.hero-context {
  font-size: 0.85rem;
  color: var(--muted-2);
  margin: 2.5rem 0 0;
  font-style: italic;
}

/* ---------- Scenario buttons in hero ---------- */
.hero-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}
.scenario-btn {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 8px;
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.18s ease;
}
.scenario-btn:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-1px);
  background: var(--surface-soft);
}
.btn-icon {
  display: inline-flex;
  width: 22px;
  height: 22px;
  color: var(--accent);
  flex-shrink: 0;
}
.btn-icon svg { width: 100%; height: 100%; }

.scenario-btn--meta .btn-icon { color: var(--muted); }
.scenario-btn--meta:hover { border-color: var(--muted); }

/* ---------- Scenario sections ---------- */
.scenario {
  padding: 4rem 0 6rem;
  margin-left: calc(var(--main-pad) * -1);
  margin-right: calc(var(--main-pad) * -1);
  padding-left: var(--main-pad);
  padding-right: var(--main-pad);
  background: var(--surface);
  scroll-margin-top: 2rem;
  position: relative;
  will-change: opacity, transform;
}

#cyber.scenario {
  --section-accent: #2ea99e;
  --section-accent-rgb: 46, 169, 158;
  border-radius: 20px 20px 8px 8px;
  padding-top: 3.5rem;
  margin-bottom: 3rem;
  box-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.06),
    0 -28px 56px rgba(0, 0, 0, 0.55);
  z-index: 1;
}

#distillation.scenario {
  --section-accent: #c9922a;
  --section-accent-rgb: 201, 146, 42;
  border-radius: 20px 20px 8px 8px;
  padding-top: 3.5rem;
  margin-bottom: 3rem;
  box-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.07),
    0 -24px 48px rgba(0, 0, 0, 0.48);
  z-index: 2;
}

#economic.scenario {
  --section-accent: #4d8fc7;
  --section-accent-rgb: 77, 143, 199;
  border-radius: 20px 20px 8px 8px;
  padding-top: 3.5rem;
  box-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.08),
    0 -20px 40px rgba(0, 0, 0, 0.4);
  z-index: 3;
}

/* ---------- Two-column sticky-scroll layout ---------- */
.scenario-cols {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 4rem;
  align-items: start;
}
.scenario-col-visual {
  position: sticky;
  top: 2rem;
}
.scenario-col-visual > .data-chart,
.scenario-col-visual > .compute-chart {
  margin-top: 0;
}

.scenario-header {
  padding-bottom: 1.75rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid rgba(var(--section-accent-rgb, 247, 129, 102), 0.25);
}

.scenario-icon {
  display: block;
  width: 32px;
  height: 32px;
  color: var(--section-accent, var(--accent));
  margin-bottom: 1rem;
  opacity: 0.85;
}
.scenario-icon svg { width: 100%; height: 100%; display: block; }

.scenario-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
}
.scenario-number {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--section-accent, var(--accent));
  letter-spacing: 0.05em;
}
.scenario-tag {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--section-accent, var(--accent));
  font-weight: 600;
  opacity: 0.75;
}

h2 {
  font-family: var(--serif);
  font-size: 2.1rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 600;
  margin: 0 0 0;
  color: var(--text);
}

.scenario-lede {
  margin: 0 0 1.1rem;
}
.scenario-body p { margin: 0 0 1.1rem; color: var(--text-soft); }

/* Capability list */
.capabilities {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: grid;
  gap: 1rem;
}
.capabilities > li {
  background: var(--surface-soft);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--section-accent, var(--rule-soft));
  border-radius: 6px;
  padding: 1.25rem 1.4rem;
  position: relative;
}
.capabilities h3 {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--section-accent, var(--text));
}
.capabilities p { margin: 0; font-size: 1.05rem; color: var(--text-soft); }

/* "What this could look like" vignette */
.vignette {
  margin-top: 2.5rem;
  padding: 1.25rem 1.75rem 1.5rem;
  background: #111;
  border: 1.5px solid rgba(var(--section-accent-rgb, 247, 129, 102), 0.5);
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(var(--section-accent-rgb, 247, 129, 102), 0.25);
}

#cyber .vignette        { background: #123530; }
#distillation .vignette { background: #301f0b; }
#economic .vignette     { background: #102238; }

.vignette-label {
  display: block;
  margin: -1.25rem -1.75rem 1.25rem;
  padding: 0.9rem 1.75rem 0.85rem;
  background: rgba(var(--section-accent-rgb, 247, 129, 102), 0.15);
  border-bottom: 1px solid rgba(var(--section-accent-rgb, 247, 129, 102), 0.3);
}
.vignette-kicker {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-style: italic;
  font-weight: 600;
  color: var(--section-accent, var(--accent));
  margin-bottom: 0.4rem;
}
.vignette-kicker svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.9;
}
.vignette-title {
  display: block;
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.01em;
}
.vignette p { color: var(--text-soft); font-style: normal; }
.vignette p:last-child { margin-bottom: 0; }

/* ---------- Sidenotes (inline-expand) ---------- */
.sn-ref {
  display: inline-block;
  vertical-align: super;
  font-size: 0.7em;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0.1em;
  cursor: pointer;
  user-select: none;
  padding: 0 0.15em;
  border-radius: 2px;
  background: rgba(247, 129, 102, 0.1);
  transition: background 0.15s ease;
}
.sn-ref:hover { background: rgba(247, 129, 102, 0.22); }

.sidenote {
  display: none;
  position: static;
  width: auto;
  margin: 0.5rem 0 0.9rem;
  padding: 0.75rem 1rem;
  font-size: 0.83rem;
  line-height: 1.5;
  color: var(--muted);
  background: var(--surface-soft);
  border-radius: 4px;
  border-left: 3px solid var(--rule-soft);
}
.sidenote.is-open { display: block; }
.sidenote sup {
  color: var(--accent);
  font-weight: 600;
  margin-right: 0.2em;
}

.sn-host { position: relative; }

/* ---------- Generic data-chart wrapper ---------- */
.data-chart {
  margin: 2.5rem 0;
  padding: 1.5rem 1.5rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--rule-soft);
  border-radius: 8px;
}
.data-chart .chart-title {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.3rem;
  color: var(--text);
  line-height: 1.35;
}
.data-chart .chart-subtitle {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0 0 1.1rem !important;
  line-height: 1.5;
}
.data-chart .chart-source {
  margin: 1rem 0 0 !important;
  font-size: 0.78rem;
  color: var(--muted-2) !important;
  line-height: 1.55;
}
.data-chart .chart-source a {
  color: var(--muted);
  text-decoration: underline;
  text-decoration-color: var(--rule);
}
.data-chart .chart-source a:hover { color: var(--text-soft); }

/* ---------- Chart caption (italic takeaway below chart) ---------- */
.chart-caption {
  margin: 0.85rem 0 0;
  font-size: 0.95rem;
  color: var(--muted);
  font-style: italic;
  line-height: 1.55;
}

/* ---------- ECI step-line chart ---------- */
.eci-chart {
  --c-us: #5fa1ff;
  --c-china: #ff6f55;
}
.eci-chart .swatch-us { background: var(--c-us); }
.eci-chart .swatch-china { background: var(--c-china); }
.eci-chart .step-line {
  fill: none;
  stroke-width: 1.75;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.eci-chart .step-line.us-line { stroke: var(--c-us); }
.eci-chart .step-line.china-line { stroke: var(--c-china); }
.eci-chart .release-dot circle {
  stroke: var(--surface);
  stroke-width: 1.25;
}
.eci-chart .us-dot circle { fill: var(--c-us); }
.eci-chart .china-dot circle { fill: var(--c-china); }
.eci-chart .model-label text {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  paint-order: stroke;
  stroke: rgba(22, 27, 34, 0.85);
  stroke-width: 3;
}
.eci-chart .us-label text { fill: var(--c-us); }
.eci-chart .china-label text { fill: var(--c-china); }
.eci-chart .axis-title {
  fill: var(--muted-2);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- Cyber image figure ---------- */
.figure-image .chart-stage-image {
  position: relative;
  background: transparent;
  border-radius: 4px;
  padding: 0;
}
.figure-image .chart-stage-image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
}

/* ---------- Compute spend chart ---------- */
.compute-chart {
  --c-openai-rd: #6dd2d2;
  --c-openai-inf: #2a9999;
  --c-anthropic-rd: #f08fb8;
  --c-anthropic-inf: #d63b8a;

  margin: 2.5rem 0;
  padding: 1.5rem 1.5rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--rule-soft);
  border-radius: 8px;
}
.chart-title {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.3rem;
  color: var(--text);
}
.chart-subtitle {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0 0 1.1rem !important;
  line-height: 1.45;
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.75rem;
  margin-bottom: 1rem;
  font-size: 0.78rem;
  color: var(--muted);
}
.legend-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.9rem;
}
.legend-group-title {
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: 0.02em;
}
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  display: inline-block;
  flex-shrink: 0;
}
.swatch-openai-rd { background: var(--c-openai-rd); }
.swatch-openai-inf { background: var(--c-openai-inf); }
.swatch-anthropic-rd { background: var(--c-anthropic-rd); }
.swatch-anthropic-inf { background: var(--c-anthropic-inf); }

.legend-swatch.hatched { background: transparent; }
.swatch-openai-rd.hatched {
  background: repeating-linear-gradient(
    45deg,
    transparent 0 2px,
    var(--c-openai-rd) 2px 4px
  );
}
.swatch-anthropic-rd.hatched {
  background: repeating-linear-gradient(
    45deg,
    transparent 0 2px,
    var(--c-anthropic-rd) 2px 4px
  );
}

.chart-stage { position: relative; }
.chart-svg {
  width: 100%;
  height: auto;
  font-family: var(--sans);
  display: block;
}
.chart-grid line {
  stroke: var(--rule-soft);
  stroke-width: 1;
}
.chart-y-labels text {
  fill: var(--muted-2);
  font-size: 11px;
}
.chart-x-labels text {
  fill: var(--muted);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.bar-group {
  cursor: pointer;
  outline: none;
  transition: opacity 0.18s ease;
}
.bar-group rect { transition: opacity 0.18s ease; }
.bar-group:focus-visible rect {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.compute-chart[data-active] .bar-group { opacity: 0.18; }
.compute-chart[data-active] .bar-group.is-active { opacity: 1; }

/* ---------- Chart tooltip ---------- */
.chart-tooltip {
  position: absolute;
  z-index: 10;
  width: 260px;
  padding: 0.85rem 1rem 0.95rem;
  background: rgba(13, 17, 23, 0.97);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.5);
  font-size: 0.85rem;
  pointer-events: auto;
  backdrop-filter: blur(4px);
}
.chart-tooltip[hidden] { display: none; }

.tt-header {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.55rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--rule-soft);
}
.tt-row {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  align-items: center;
  gap: 0.55rem;
  padding: 0.22rem 0;
  color: var(--text-soft);
  line-height: 1.3;
}
.tt-row.tt-faded { color: var(--muted-2); }
.tt-row.tt-faded .tt-swatch { opacity: 0.35; }
.tt-row.tt-active .tt-label,
.tt-row.tt-active .tt-value { color: var(--text); font-weight: 500; }
.tt-swatch { width: 12px; height: 12px; border-radius: 2px; }
.tt-label { font-size: 0.83rem; line-height: 1.25; }
.tt-sublabel { color: var(--muted-2); font-size: 0.74rem; }
.tt-row.tt-active .tt-sublabel { color: var(--muted); }
.tt-value { font-size: 0.83rem; font-variant-numeric: tabular-nums; align-self: start; padding-top: 0.1rem; }
.tt-divider { height: 1px; background: var(--rule-soft); margin: 0.5rem 0 0.4rem; }
.tt-summary { grid-template-columns: 1fr auto; }
.tt-summary .tt-label { color: var(--muted); font-size: 0.78rem; }
.tt-summary .tt-value { color: var(--text); font-size: 0.83rem; font-variant-numeric: tabular-nums; }
.tt-est-flag { color: var(--muted-2); font-size: 0.72rem; font-style: italic; margin-left: 0.25rem; }

.chart-source {
  margin: 1rem 0 0 !important;
  font-size: 0.78rem;
  color: var(--muted-2) !important;
  line-height: 1.5;
}
.chart-source a {
  color: var(--muted);
  text-decoration: underline;
  text-decoration-color: var(--rule);
}
.chart-source a:hover { color: var(--text-soft); }

/* ---------- Footer ---------- */
.contributors-section {
  padding: 4rem 0 2rem;
  scroll-margin-top: 2rem;
}
.contributors-branding {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.contributors-branding p { margin: 0; }
.ari-icon {
  height: 44px;
  width: auto;
  flex-shrink: 0;
}
.contributors-section h2 {
  font-size: 2.1rem;
  margin: 0 0 2rem;
}
.contributors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.contributor-card {
  background: var(--surface-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 8px;
  padding: 1.25rem 1.4rem;
}
.contributor-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}
.contributor-card p {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

footer {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule-soft);
  font-size: 0.85rem;
  color: var(--muted-2);
}

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  :root { --main-pad: 1rem; }
  .scenario-cols { grid-template-columns: 1fr; }
  .scenario-col-visual { position: static; }
  #cyber.scenario,
  #distillation.scenario,
  #economic.scenario { border-radius: 12px 12px 6px 6px; padding-top: 3.5rem; }
}

@media (max-width: 600px) {
  :root { --main-pad-top: 3.5rem; --main-pad: 0.875rem; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.45rem; }
  .thesis { font-size: 1rem; }
  .scenario { padding: 3rem 0 4rem; padding-left: var(--main-pad); padding-right: var(--main-pad); }
  #cyber.scenario,
  #distillation.scenario,
  #economic.scenario { padding-top: 3rem; }
  .vignette { padding: 1.25rem 1.4rem; }
  .vignette-label { margin: -1.25rem -1.4rem 1.25rem; padding: 0.9rem 1.4rem 0.85rem; }
  .hero-actions { grid-template-columns: 1fr 1fr; }
  .site-nav { top: 0.875rem; right: 0.875rem; }
}