/* ==========================================================================
   MAG Lubricants — Sustainability section components
   Built on the existing MAG design tokens. Pantone 383C-equivalent green
   (#A5A800) is used only as an accent: active states, data lines, key marks.
   No separate visual system — charcoal / white / technical grey + restrained
   green, Space Grotesk headings, Inter body. WCAG 2.2 AA, reduced-motion safe.
   ========================================================================== */

:root {
  --su-charcoal: #0A1628;
  --su-navy: #101c2e;
  --su-ink: #191c1d;
  --su-body: #45474c;
  --su-muted: #79849b;
  --su-line: #c5c6cd;
  --su-grey: #f3f4f5;
  --su-grey-2: #edeeef;
  --su-surface: #f8f9fa;
  --su-green: #A5A800;
  --su-green-dk: #767B00;
  --su-green-ink: #191e00;
  --su-white: #ffffff;
}

/* ---- Shared type / helpers -------------------------------------------- */
.su-eyebrow {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  color: var(--su-green);
}
.su-kicker {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  color: var(--su-green-dk);
}
.su-h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--su-navy);
  line-height: 1.05;
}
.su-measure { max-width: 68ch; }

/* Faint engineering grid used as a subtle technical motif on dark panels */
.su-grid-bg {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
}
.su-dot-bg {
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---- Breadcrumb -------------------------------------------------------- */
.su-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}
.su-crumbs a { color: var(--su-muted); text-decoration: none; transition: color 0.2s ease; }
.su-crumbs a:hover { color: var(--su-green); }
.su-crumbs .sep { color: var(--su-line); }
.su-crumbs [aria-current="page"] { color: var(--su-navy); font-weight: 600; }

/* ---- Sticky section sub-navigation ------------------------------------ */
.su-subnav {
  position: sticky;
  top: 82px;
  z-index: 40;
  background: rgba(248, 249, 250, 0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--su-line);
}
.su-subnav-track {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0 1.25rem;
}
.su-subnav-track::-webkit-scrollbar { display: none; }
.su-subnav a {
  position: relative;
  flex: 0 0 auto;
  padding: 0.95rem 0.85rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  color: var(--su-body);
  text-decoration: none;
  transition: color 0.2s ease;
}
.su-subnav a::after {
  content: '';
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0;
  height: 2px;
  background: var(--su-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.su-subnav a:hover { color: var(--su-navy); }
.su-subnav a[aria-current="page"] { color: var(--su-green-dk); }
.su-subnav a[aria-current="page"]::after { transform: scaleX(1); }

/* ---- Status tags (Control / Influence / Collaborate) ------------------ */
.su-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--su-line);
  color: var(--su-body);
  background: var(--su-white);
}
.su-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
}
.su-tag--control::before { background: var(--su-green); }
.su-tag--control { border-color: rgba(165, 168, 0, 0.55); color: var(--su-green-ink); }
.su-tag--influence::before { background: var(--su-navy); }
.su-tag--collaborate::before {
  background: repeating-linear-gradient(45deg, var(--su-muted), var(--su-muted) 2px, transparent 2px, transparent 4px);
  border: 1px solid var(--su-muted);
}
.su-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
}

/* ---- Reveal-on-scroll (JS toggles .is-in) ----------------------------- */
.su-reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.su-reveal.is-in { opacity: 1; transform: none; }
.su-stagger > * { opacity: 0; transform: translateY(18px); transition: opacity 0.55s ease, transform 0.55s ease; }
.su-stagger.is-in > * { opacity: 1; transform: none; }
.su-stagger.is-in > *:nth-child(2) { transition-delay: 0.08s; }
.su-stagger.is-in > *:nth-child(3) { transition-delay: 0.16s; }
.su-stagger.is-in > *:nth-child(4) { transition-delay: 0.24s; }
.su-stagger.is-in > *:nth-child(5) { transition-delay: 0.32s; }
.su-stagger.is-in > *:nth-child(6) { transition-delay: 0.40s; }

/* ======================================================================
   DIAGRAM 5.1 — MAG Sustainability Framework (compass)
   ====================================================================== */
.su-compass { position: relative; }
.su-compass-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.su-core {
  text-align: center;
  padding: 28px 24px;
  background: var(--su-green);
  color: var(--su-green-ink);
}
.su-core .su-core-eyebrow {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.66rem;
}
.su-core .su-core-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 1.6rem;
  line-height: 1.05;
  margin-top: 6px;
}
.su-core .su-core-sub { font-size: 0.86rem; margin-top: 8px; opacity: 0.85; }
.su-pillar {
  display: block;
  text-decoration: none;
  background: var(--su-navy);
  color: var(--su-white);
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-inline-start: 3px solid var(--su-green);
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.su-pillar:hover,
.su-pillar:focus-visible {
  background: #16243a;
  border-inline-start-color: var(--su-green);
  transform: translateY(-3px);
  outline: none;
}
.su-pillar:focus-visible { box-shadow: 0 0 0 3px rgba(165, 168, 0, 0.6); }
.su-pillar .su-pillar-n {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 0.8rem;
  color: var(--su-green);
  letter-spacing: 0.1em;
}
.su-pillar .su-pillar-t {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.12rem;
  margin: 8px 0 8px;
  line-height: 1.15;
}
.su-pillar .su-pillar-x { font-size: 0.85rem; color: #c7d0dd; line-height: 1.55; }
.su-pillar .su-pillar-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 14px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.68rem;
  color: var(--su-green);
}
.su-foundation {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--su-line);
  border: 1px solid var(--su-line);
}
.su-foundation .su-found-item {
  background: var(--su-grey);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.su-foundation .su-found-item .material-symbols-outlined { color: var(--su-green-dk); font-size: 20px; }
.su-foundation .su-found-item span:last-child {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--su-navy);
}

@media (min-width: 1024px) {
  .su-compass-grid {
    grid-template-columns: 1fr 1.15fr 1fr;
    grid-template-rows: auto auto auto;
    grid-template-areas:
      ".    top    ."
      "left core   right"
      ".    bottom .";
    gap: 18px;
    align-items: stretch;
  }
  .su-core { grid-area: core; display: flex; flex-direction: column; justify-content: center; }
  .su-pillar.is-top { grid-area: top; }
  .su-pillar.is-right { grid-area: right; }
  .su-pillar.is-bottom { grid-area: bottom; }
  .su-pillar.is-left { grid-area: left; }
  .su-foundation { grid-template-columns: repeat(4, 1fr); }
}

/* ======================================================================
   DIAGRAM 5.2 / lifecycle & 5.7 manufacturing — numbered stage grids
   ====================================================================== */
.su-flow { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; background: var(--su-line); border: 1px solid var(--su-line); }
.su-flow .su-stage {
  position: relative;
  background: var(--su-white);
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
}
.su-stage .su-stage-top { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; margin-bottom: 12px; }
.su-stage .su-stage-n {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--su-green);
  line-height: 1;
}
.su-stage .su-stage-t {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--su-navy);
  margin-bottom: 8px;
}
.su-stage .su-stage-x { font-size: 0.84rem; line-height: 1.55; color: var(--su-body); }
.su-stage .su-gate {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--su-green-dk);
}
.su-stage .su-gate .material-symbols-outlined { font-size: 15px; }
.su-flow--4 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .su-flow--4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .su-flow--4 { grid-template-columns: repeat(4, 1fr); } }

/* return-loop callout for the lifecycle */
.su-loop-back {
  margin-top: 14px;
  border: 1px dashed var(--su-green);
  background: rgba(165, 168, 0, 0.06);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.su-loop-back .material-symbols-outlined { color: var(--su-green-dk); }
.su-loop-back p { font-size: 0.84rem; color: var(--su-body); margin: 0; }

/* ======================================================================
   DIAGRAM 5.3 — Roadmap rail (Measure / Improve / Innovate / Report)
   ====================================================================== */
.su-road { list-style: none; margin: 0; padding: 0; counter-reset: road; display: grid; gap: 16px; }
.su-road .su-phase {
  position: relative;
  background: var(--su-white);
  border: 1px solid var(--su-line);
  border-top: 3px solid var(--su-green);
  padding: 24px;
}
.su-road .su-phase-n {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--su-green-dk);
}
.su-road .su-phase-t {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--su-navy);
  margin: 6px 0 8px;
}
.su-road .su-phase-x { font-size: 0.85rem; line-height: 1.55; color: var(--su-body); }
.su-road .su-phase-tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.su-road .su-phase-tags span {
  font-size: 0.68rem;
  color: var(--su-body);
  background: var(--su-grey);
  border: 1px solid var(--su-line);
  padding: 3px 8px;
}
@media (min-width: 768px) { .su-road { grid-template-columns: repeat(4, 1fr); } }

/* ======================================================================
   DIAGRAM 5.4 — Strategy-to-Impact (Inputs / Actions / Intended outcomes)
   ====================================================================== */
.su-sim { display: grid; gap: 16px; }
.su-sim-col { background: var(--su-white); border: 1px solid var(--su-line); padding: 22px; }
.su-sim-col.is-actions { background: var(--su-navy); border-color: var(--su-navy); }
.su-sim-col h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--su-green-dk);
  margin-bottom: 14px;
}
.su-sim-col.is-actions h3 { color: var(--su-green); }
.su-sim-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.su-sim-col li {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--su-navy);
  padding: 9px 12px;
  background: var(--su-grey);
  border-inline-start: 2px solid var(--su-line);
}
.su-sim-col.is-actions li { color: var(--su-white); background: rgba(255, 255, 255, 0.06); border-inline-start-color: var(--su-green); }
.su-sim-foot {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--su-body);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.su-sim-foot .material-symbols-outlined { color: var(--su-green-dk); font-size: 18px; }
@media (min-width: 900px) { .su-sim { grid-template-columns: 1fr 1fr 1fr; align-items: start; } }

/* ======================================================================
   DIAGRAM 5.5 — Circularity loop (open six-stage ring)
   ====================================================================== */
.su-loopwrap { position: relative; }
.su-loop-centre {
  background: var(--su-navy);
  color: var(--su-white);
  text-align: center;
  padding: 22px;
  margin-bottom: 16px;
}
.su-loop-centre p {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin: 0;
}
.su-loop-centre .su-loop-note { font-family: 'Inter', sans-serif; font-weight: 400; font-size: 0.8rem; opacity: 0.8; margin-top: 8px; }
.su-loop { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; background: var(--su-line); border: 1px solid var(--su-line); }
.su-loop .su-seg { background: var(--su-white); padding: 22px; position: relative; }
.su-loop .su-seg-n {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  color: var(--su-green);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}
.su-loop .su-seg-t {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--su-navy);
  margin: 6px 0 8px;
}
.su-loop .su-seg-x { font-size: 0.84rem; line-height: 1.55; color: var(--su-body); }
.su-loop .su-seg.is-break { border-top: 3px dashed var(--su-green); }
@media (min-width: 640px) { .su-loop { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .su-loop { grid-template-columns: repeat(3, 1fr); } }

/* ======================================================================
   DIAGRAM 5.6 — Product Impact Matrix (2x2, fit-for-purpose centre)
   ====================================================================== */
.su-matrix-wrap { display: grid; gap: 16px; }
.su-matrix-centre {
  background: var(--su-green);
  color: var(--su-green-ink);
  text-align: center;
  padding: 20px;
}
.su-matrix-centre .su-mx-t { font-family: 'Space Grotesk', sans-serif; font-weight: 800; font-size: 1.15rem; }
.su-matrix-centre .su-mx-x { font-size: 0.84rem; margin-top: 6px; }
.su-matrix { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--su-line); border: 1px solid var(--su-line); }
.su-matrix .su-quad { background: var(--su-white); padding: 24px; }
.su-matrix .su-quad .material-symbols-outlined { color: var(--su-green-dk); font-size: 28px; }
.su-matrix .su-quad-t {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--su-navy);
  margin: 12px 0 8px;
}
.su-matrix .su-quad-x { font-size: 0.84rem; line-height: 1.55; color: var(--su-body); }
.su-matrix .su-quad-ev {
  margin-top: 12px;
  font-size: 0.74rem;
  color: var(--su-green-dk);
  border-top: 1px solid var(--su-line);
  padding-top: 10px;
}
.su-matrix .su-quad-ev strong { color: var(--su-navy); font-weight: 700; }
@media (min-width: 768px) { .su-matrix { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) {
  .su-matrix-wrap { grid-template-columns: 1fr; }
}

/* axis labels for the matrix (desktop) */
.su-axis { display: none; }
@media (min-width: 768px) {
  .su-axis { display: flex; align-items: center; gap: 0.5rem; font-family: 'Space Grotesk', sans-serif; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--su-muted); }
  .su-axis .material-symbols-outlined { font-size: 16px; }
}

/* ======================================================================
   DIAGRAM 5.8 — Customer Value Chain (5 stages + split outcome)
   ====================================================================== */
.su-vchain { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: vc; }
.su-vchain .su-vc {
  background: var(--su-white);
  border: 1px solid var(--su-line);
  border-inline-start: 3px solid var(--su-green);
  padding: 20px 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.su-vchain .su-vc-n {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--su-green);
  line-height: 1;
  flex: 0 0 auto;
  width: 2ch;
}
.su-vchain .su-vc-t { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1rem; color: var(--su-navy); margin-bottom: 6px; }
.su-vchain .su-vc-x { font-size: 0.84rem; line-height: 1.55; color: var(--su-body); }
.su-vc-feedback {
  margin-top: 12px;
  border: 1px dashed var(--su-green);
  background: rgba(165, 168, 0, 0.06);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: var(--su-body);
}
.su-vc-feedback .material-symbols-outlined { color: var(--su-green-dk); }
@media (min-width: 1024px) {
  .su-vchain { grid-template-columns: repeat(5, 1fr); align-items: stretch; }
  .su-vchain .su-vc { flex-direction: column; }
  .su-vchain .su-vc-n { width: auto; margin-bottom: 8px; }
}

/* ======================================================================
   Quality assurance pathway / management-systems triangle
   ====================================================================== */
.su-tri {
  display: grid;
  gap: 1px;
  background: var(--su-line);
  border: 1px solid var(--su-line);
  grid-template-columns: 1fr;
}
.su-tri .su-tri-item { background: var(--su-navy); color: var(--su-white); padding: 24px; }
.su-tri .su-tri-item .su-tri-k { font-family: 'Space Grotesk', sans-serif; font-weight: 800; color: var(--su-green); font-size: 0.92rem; letter-spacing: 0.04em; }
.su-tri .su-tri-item .su-tri-t { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.05rem; margin: 6px 0 8px; }
.su-tri .su-tri-item .su-tri-x { font-size: 0.84rem; color: #c7d0dd; line-height: 1.55; }
@media (min-width: 768px) { .su-tri { grid-template-columns: repeat(3, 1fr); } }

/* ---- Content cards (generic) ------------------------------------------ */
.su-cards { display: grid; gap: 1px; background: var(--su-line); border: 1px solid var(--su-line); }
.su-card { background: var(--su-white); padding: 26px; }
.su-card .material-symbols-outlined { color: var(--su-green-dk); font-size: 30px; }
.su-card h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.05rem; color: var(--su-navy); margin: 14px 0 8px; }
.su-card p { font-size: 0.86rem; line-height: 1.6; color: var(--su-body); }
.su-cards--2 { grid-template-columns: 1fr; }
.su-cards--3 { grid-template-columns: 1fr; }
.su-cards--4 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .su-cards--2 { grid-template-columns: repeat(2, 1fr); } .su-cards--3 { grid-template-columns: repeat(2, 1fr); } .su-cards--4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .su-cards--3 { grid-template-columns: repeat(3, 1fr); } .su-cards--4 { grid-template-columns: repeat(4, 1fr); } }

/* ---- Process / numbered step list (responsible formulation etc.) ------ */
.su-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; background: var(--su-line); border: 1px solid var(--su-line); }
.su-steps li { background: var(--su-white); padding: 22px; }
.su-steps .su-step-n { font-family: 'Space Grotesk', sans-serif; font-weight: 800; color: var(--su-green); font-size: 0.95rem; }
.su-steps .su-step-t { font-family: 'Space Grotesk', sans-serif; font-weight: 700; color: var(--su-navy); font-size: 1rem; margin: 6px 0 8px; }
.su-steps .su-step-x { font-size: 0.84rem; line-height: 1.55; color: var(--su-body); }
.su-steps--3 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .su-steps--3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .su-steps--3 { grid-template-columns: repeat(3, 1fr); } }

/* ---- Checklist --------------------------------------------------------- */
.su-checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; background: var(--su-line); border: 1px solid var(--su-line); }
.su-checklist li { background: var(--su-white); padding: 16px 20px; display: flex; gap: 0.85rem; align-items: flex-start; }
.su-checklist li .material-symbols-outlined { color: var(--su-green-dk); font-size: 20px; flex: 0 0 auto; }
.su-checklist li span:last-child { font-size: 0.88rem; color: var(--su-navy); line-height: 1.5; }
@media (min-width: 768px) { .su-checklist { grid-template-columns: 1fr 1fr; } }

/* ---- Evidence callout / technical disclaimer -------------------------- */
.su-evidence {
  border: 1px solid var(--su-line);
  border-inline-start: 3px solid var(--su-green);
  background: var(--su-grey);
  padding: 22px 24px;
}
.su-evidence .su-ev-k {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  color: var(--su-green-dk);
  margin-bottom: 10px;
}
.su-evidence p { font-size: 0.86rem; line-height: 1.6; color: var(--su-body); margin: 0; }
.su-disclaimer {
  border: 1px solid var(--su-line);
  background: var(--su-white);
  padding: 18px 22px;
}
.su-disclaimer summary {
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--su-navy);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.su-disclaimer summary::-webkit-details-marker { display: none; }
.su-disclaimer summary .material-symbols-outlined { color: var(--su-green-dk); transition: transform 0.2s ease; }
.su-disclaimer[open] summary .material-symbols-outlined { transform: rotate(180deg); }
.su-disclaimer p { font-size: 0.82rem; line-height: 1.6; color: var(--su-body); margin: 12px 0 0; }

/* ---- Related content cards -------------------------------------------- */
.su-related { display: grid; gap: 16px; }
.su-related a {
  display: block;
  text-decoration: none;
  background: var(--su-white);
  border: 1px solid var(--su-line);
  padding: 24px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.su-related a:hover, .su-related a:focus-visible { transform: translateY(-3px); border-color: var(--su-green); outline: none; }
.su-related a:focus-visible { box-shadow: 0 0 0 3px rgba(165, 168, 0, 0.5); }
.su-related .su-rel-k { font-family: 'Space Grotesk', sans-serif; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.66rem; color: var(--su-green-dk); }
.su-related .su-rel-t { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.1rem; color: var(--su-navy); margin: 10px 0 8px; }
.su-related .su-rel-x { font-size: 0.84rem; color: var(--su-body); line-height: 1.55; }
.su-related .su-rel-go { display: inline-flex; align-items: center; gap: 0.3rem; margin-top: 14px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--su-green-dk); }
@media (min-width: 768px) { .su-related { grid-template-columns: repeat(3, 1fr); } }

/* ---- CTA buttons (reuse site language) -------------------------------- */
.su-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  padding: 1rem 1.6rem;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.su-btn--primary { background: var(--su-green); color: var(--su-green-ink); }
.su-btn--primary:hover { background: var(--su-white); color: var(--su-navy); }
.su-btn--dark { background: var(--su-navy); color: var(--su-white); }
.su-btn--dark:hover { background: var(--su-green); color: var(--su-green-ink); }
.su-btn--ghost { border: 1px solid var(--su-line); color: var(--su-navy); }
.su-btn--ghost:hover { border-color: var(--su-green); color: var(--su-green-dk); }
.su-btn--on-dark { border: 1px solid rgba(255, 255, 255, 0.4); color: var(--su-white); }
.su-btn--on-dark:hover { border-color: var(--su-green); color: var(--su-green); }

/* ---- Pillar quick-link rail (within hub) ------------------------------ */
.su-pilllist { list-style: none; margin: 0; padding: 0; }

/* ======================================================================
   ENHANCEMENTS v2 — premium polish + lightweight interactivity
   ====================================================================== */

/* In-page anchors clear the fixed nav (82px) + sticky sub-nav (~52px) */
html { scroll-padding-top: 150px; }

/* Eyebrow gains a short green accent rule for editorial rhythm */
.su-eyebrow { display: inline-flex; align-items: center; gap: 0.7rem; }
.su-eyebrow::before { content: ''; width: 26px; height: 2px; background: currentColor; flex: 0 0 auto; }

/* Sub-nav lifts off the page with a hairline shadow */
.su-subnav { box-shadow: 0 1px 0 rgba(16, 28, 46, 0.04), 0 6px 16px -12px rgba(16, 28, 46, 0.25); }

/* CTA arrow nudges forward on hover/focus */
.su-btn .material-symbols-outlined { transition: transform 0.2s ease; }
.su-btn:hover .material-symbols-outlined, .su-btn:focus-visible .material-symbols-outlined { transform: translateX(3px); }
.su-btn:focus-visible { outline: 2px solid var(--su-green); outline-offset: 3px; }

/* Card & diagram-cell hover lift (interactive without being decorative) */
.su-card, .su-quad, .su-seg, .su-stage, .su-phase, .su-vc, .su-step, .su-found-item {
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.su-card:hover, .su-quad:hover, .su-seg:hover, .su-stage:hover, .su-phase:hover, .su-vchain .su-vc:hover {
  position: relative;
  z-index: 1;
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -22px rgba(10, 22, 40, 0.45);
}
.su-card:hover .material-symbols-outlined,
.su-quad:hover .material-symbols-outlined { color: var(--su-green); }
.su-steps li { transition: transform 0.25s ease, box-shadow 0.25s ease; }
.su-steps li:hover { position: relative; z-index: 1; transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(10, 22, 40, 0.45); }
.su-foundation .su-found-item:hover .material-symbols-outlined { color: var(--su-green); }

/* Stat / proof band (hub credibility strip) */
.su-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.1); }
.su-stats .su-stat { background: var(--su-navy); padding: 26px 18px; text-align: center; }
.su-stats .su-stat-n { font-family: 'Space Grotesk', sans-serif; font-weight: 800; color: var(--su-green); font-size: 1.9rem; line-height: 1; }
.su-stats .su-stat-l { color: rgba(255, 255, 255, 0.7); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.15em; font-weight: 700; margin-top: 10px; }
@media (min-width: 640px) { .su-stats { grid-template-columns: repeat(5, 1fr); } }

/* Reduced motion: disable the new lift/nudge interactions */
@media (prefers-reduced-motion: reduce) {
  .su-card, .su-quad, .su-seg, .su-stage, .su-phase, .su-vc, .su-step, .su-steps li, .su-found-item,
  .su-btn .material-symbols-outlined { transition: none !important; }
  .su-card:hover, .su-quad:hover, .su-seg:hover, .su-stage:hover, .su-phase:hover,
  .su-vchain .su-vc:hover, .su-steps li:hover { transform: none !important; box-shadow: none !important; }
  .su-btn:hover .material-symbols-outlined, .su-btn:focus-visible .material-symbols-outlined { transform: none !important; }
}

/* ---- Reduced motion (base) -------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .su-reveal, .su-stagger > * { opacity: 1 !important; transform: none !important; transition: none !important; }
  .su-pillar, .su-related a { transition: none !important; }
  .su-subnav a::after { transition: none !important; }
}