/* HERO */
.hero {
  background: var(--night); color: var(--white);
  min-height: 100vh; display: flex; align-items: center;
  padding: 120px 2.5rem 100px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 65% 20%, rgba(200,118,14,0.09) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 8% 80%, rgba(200,118,14,0.04) 0%, transparent 60%);
  pointer-events: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 420px; gap: 4rem;
  align-items: center; max-width: 1200px; margin: 0 auto;
  width: 100%; position: relative; z-index: 1;
}
.hero-grid--single {
  grid-template-columns: minmax(0, 840px);
}
.hero-overline {
  font-size: 11px; font-weight: 500; letter-spacing: 0.14em;
  color: var(--amber-light); text-transform: uppercase; margin-bottom: 1.25rem;
  animation: fadeUp 0.5s ease both;
}
.hero-title {
  font-family: var(--ff-display);
  font-size: clamp(52px, 6.5vw, 84px);
  font-weight: 500; line-height: 0.96; letter-spacing: -0.01em; margin-bottom: 1.25rem;
  animation: fadeUp 0.5s 0.1s ease both;
}
.hero-title em { font-style: italic; color: rgba(255,255,255,0.45); }
.hero-sub {
  font-size: 18px; font-weight: 300; line-height: 1.6;
  color: rgba(255,255,255,0.62); max-width: 520px; margin-bottom: 2.5rem;
  animation: fadeUp 0.5s 0.2s ease both;
}
.hero-sub strong { color: rgba(255,255,255,0.9); font-weight: 400; }
.hero-actions {
  display: flex; gap: 1rem; flex-wrap: wrap;
  animation: fadeUp 0.5s 0.3s ease both;
}
/* Hero side card */
.hero-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 12px; padding: 2rem;
  animation: fadeUp 0.5s 0.4s ease both;
}
.hero-card-label {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--amber-light); margin-bottom: 1.25rem; font-weight: 500;
}
.hero-stat { border-top: 1px solid rgba(255,255,255,0.07); padding: 1rem 0; }
.hero-stat:last-child { border-bottom: 1px solid rgba(255,255,255,0.07); }
.hero-stat-num {
  font-family: var(--ff-display); font-size: 36px; font-weight: 500;
  color: var(--white); line-height: 1.1;
}
.hero-stat-desc { font-size: 13px; color: rgba(255,255,255,0.48); margin-top: 3px; line-height: 1.45; }

/* SECTIONS */
section { padding: 96px 2.5rem; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-title {
  font-family: var(--ff-display);
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 500; line-height: 1.05; letter-spacing: -0.01em; margin-bottom: 1.5rem;
}
.section-body {
  font-size: 17px; font-weight: 300; line-height: 1.7;
  color: var(--ink-muted); max-width: 660px;
}
.section-body + .section-body { margin-top: 1rem; }

/* CONSTRAINT SECTION */
.constraint { background: var(--paper); }
.constraint-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start;
}
.constraint-cards {
  display: flex; flex-direction: column; gap: 1px;
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  background: var(--border);
}
.constraint-card {
  background: var(--white); padding: 1.5rem 1.75rem;
  display: flex; align-items: flex-start; gap: 1.25rem;
}
.constraint-card-icon {
  width: 36px; height: 36px; border-radius: 7px;
  background: var(--amber-pale); border: 1px solid rgba(200,118,14,0.18);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px;
}
.constraint-card-icon svg {
  width: 16px; height: 16px; stroke: var(--amber); fill: none;
  stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round;
}
.constraint-card-title {
  font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 4px; line-height: 1.3;
}
.constraint-card-body { font-size: 13px; color: var(--ink-ghost); line-height: 1.55; }

/* COMPARISON SECTION */
.comparison { background: var(--night); color: var(--white); padding: 96px 2.5rem; }
.comparison .site-overline { color: var(--amber-light); }
.comparison .section-title { color: var(--white); }
.comparison .section-body { color: rgba(255,255,255,0.52); max-width: 100%; }

.compare-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 3.5rem;
}
.compare-card {
  border-radius: 12px; padding: 2rem; border: 1px solid;
}
.compare-card.current {
  background: rgba(200,118,14,0.06);
  border-color: rgba(200,118,14,0.2);
}
.compare-card.sparc {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.1);
}
.compare-card-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.12em;
  text-transform: uppercase; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 8px;
}
.compare-card-label .dot {
  width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0;
}
.compare-card.current .compare-card-label { color: var(--amber-light); }
.compare-card.current .dot { background: var(--amber); }
.compare-card.sparc .compare-card-label { color: rgba(255,255,255,0.7); }
.compare-card.sparc .dot { background: var(--green); }
.compare-card.modelled {
  background: rgba(255,255,255,0.025);
  border-color: rgba(255,255,255,0.07);
}
.compare-card.modelled .compare-card-label { color: rgba(255,255,255,0.45); }
.compare-card.modelled .dot { background: rgba(255,255,255,0.38); }
.compare-card.arc {
  background: rgba(58,110,168,0.1);
  border-color: rgba(91,143,199,0.2);
}
.compare-card.arc .compare-card-label { color: var(--blue-light); }
.compare-card.arc .dot { background: var(--blue-light); }
.compare-card-body {
  font-size: 14px; font-weight: 300; line-height: 1.65;
  color: rgba(255,255,255,0.52);
}

.pnl-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); gap: 1rem;
}
.pnl-row:first-of-type { border-top: 1px solid rgba(255,255,255,0.05); }
.pnl-label { font-size: 13px; font-weight: 300; color: rgba(255,255,255,0.52); line-height: 1.4; }
.pnl-label small { display: block; font-size: 11px; color: rgba(255,255,255,0.28); margin-top: 1px; }
.pnl-value {
  font-family: var(--ff-display); font-size: 17px; font-weight: 500;
  white-space: nowrap; flex-shrink: 0;
}
.pnl-value.pos { color: rgba(255,255,255,0.85); }
.pnl-value.neg { color: rgba(255,100,100,0.7); }
.pnl-value.zero { color: rgba(255,255,255,0.28); font-style: italic; font-size: 14px; }
.pnl-value.green { color: var(--green-light); }
.pnl-value.amber { color: var(--amber-light); }

.pnl-total {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 12px 0 0; margin-top: 4px; gap: 1rem;
}
.pnl-total-label {
  font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.8);
  text-transform: uppercase; letter-spacing: 0.08em; font-size: 11px;
}
.pnl-total-value {
  font-family: var(--ff-display); font-size: 26px; font-weight: 500; color: var(--amber-light);
}

.compare-extra {
  margin-top: 1.25rem; padding: 1rem 1.25rem;
  background: rgba(42,110,79,0.1); border: 1px solid rgba(42,110,79,0.2);
  border-radius: 8px;
}
.compare-extra-label {
  font-size: 10px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--green-light); margin-bottom: 6px;
}
.compare-extra-body { font-size: 13px; font-weight: 300; color: rgba(255,255,255,0.52); line-height: 1.5; }
.compare-extra-body strong { color: rgba(255,255,255,0.8); font-weight: 400; }

.compare-footnote {
  margin-top: 2.5rem; padding: 1.25rem 1.5rem;
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07);
  border-radius: 10px; font-size: 14px; font-weight: 300;
  color: rgba(255,255,255,0.42); line-height: 1.65;
}
.compare-footnote strong { color: rgba(255,255,255,0.72); font-weight: 400; }

/* VALUE DIMENSIONS */
.value { background: var(--paper); }
.value .section-body strong { color: var(--ink); font-weight: 400; }
.value-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start;
}
.value-items {
  display: flex; flex-direction: column; gap: 1px;
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  background: var(--border);
}
.value-item { background: var(--white); padding: 1.5rem 1.75rem; }
.value-item-head {
  display: flex; align-items: center; gap: 12px; margin-bottom: 0.6rem;
}
.value-item-num {
  font-family: var(--ff-display); font-size: 32px; font-weight: 500;
  color: var(--ink); line-height: 1; width: 36px; flex-shrink: 0;
}
.value-item-title { font-size: 14px; font-weight: 500; color: var(--ink); line-height: 1.3; }
.value-item-body { font-size: 13px; color: var(--ink-ghost); line-height: 1.6; padding-left: 48px; }
.value-context { margin-top: 1rem; }
.outcome-stack { display: grid; gap: 12px; }
.outcome-stack-item {
  position: relative; overflow: hidden; padding: 1.35rem 1.5rem;
  background: var(--white); border: 1px solid var(--border);
  box-shadow: 0 10px 22px rgba(15,13,10,0.045);
}
.outcome-stack-item::before {
  content: ''; position: absolute; inset: 0 auto 0 0; width: 5px;
  background: var(--ink-muted);
}
.outcome-stack-item--green::before { background: var(--green); }
.outcome-stack-item--blue::before { background: var(--blue); }
.outcome-stack-item--amber::before { background: var(--amber); }
.outcome-stack-item--neutral::before { background: var(--ink-muted); }
.outcome-stack-title {
  margin: 0 0 0.45rem; font-size: 15px; font-weight: 500;
  line-height: 1.35; color: var(--ink);
}
.outcome-stack-body {
  margin: 0; font-size: 14px; font-weight: 300;
  line-height: 1.6; color: var(--ink-muted);
}
.value-links { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-top: 1.25rem; }

/* STRATEGIC */
.strategic { background: var(--night); color: var(--white); padding: 96px 2.5rem; }
.strategic .site-overline { color: var(--amber-light); }
.strategic .section-title { color: var(--white); }

.ramp-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 3.5rem;
}
.ramp-card {
  border-radius: 12px; padding: 2rem; border: 1px solid;
}
.ramp-card.cliff {
  background: rgba(255,255,255,0.02); border-color: rgba(255,255,255,0.07);
}
.ramp-card.ramp {
  background: rgba(42,110,79,0.06); border-color: rgba(42,110,79,0.2);
}
.ramp-card-tag {
  font-size: 10px; font-weight: 500; letter-spacing: 0.12em;
  text-transform: uppercase; margin-bottom: 1rem; display: inline-block;
  padding: 3px 10px; border-radius: 20px;
}
.ramp-card.cliff .ramp-card-tag {
  background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.4);
}
.ramp-card.ramp .ramp-card-tag {
  background: rgba(42,110,79,0.2); color: var(--green-light);
}
.ramp-card-title {
  font-family: var(--ff-display); font-size: 28px; font-weight: 500; line-height: 1.1;
  margin-bottom: 1.25rem; letter-spacing: -0.01em;
}
.ramp-card.cliff .ramp-card-title { color: rgba(255,255,255,0.55); }
.ramp-card.ramp .ramp-card-title { color: var(--white); }
.ramp-card-body { font-size: 14px; font-weight: 300; color: rgba(255,255,255,0.45); line-height: 1.65; }
.ramp-card.ramp .ramp-card-body { color: rgba(255,255,255,0.58); }

.strategic-integrated {
  margin-top: 2rem; padding: 1.5rem 2rem;
  background: rgba(200,118,14,0.07); border: 1px solid rgba(200,118,14,0.2);
  border-radius: 12px;
}
.strategic-integrated-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--amber-light); margin-bottom: 0.75rem;
}
.strategic-integrated-body {
  font-size: 15px; font-weight: 300; color: rgba(255,255,255,0.55); line-height: 1.65;
}
.strategic-integrated-body strong { color: rgba(255,255,255,0.82); font-weight: 400; }

/* PILOT SECTION */
.pilot { background: var(--paper); }
.pilot-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start;
}
.pilot-steps {
  display: flex; flex-direction: column; gap: 1px;
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  background: var(--border);
}
.pilot-step { background: var(--white); padding: 1.5rem 1.75rem; display: flex; gap: 1.25rem; }
.pilot-step-num {
  font-family: var(--ff-display); font-size: 40px; font-weight: 400; font-style: italic;
  color: rgba(15,13,10,0.07); line-height: 1; width: 40px; flex-shrink: 0; margin-top: -4px;
}
.pilot-step-title { font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 4px; }
.pilot-step-body { font-size: 13px; color: var(--ink-ghost); line-height: 1.55; }

/* CTA */
.cta-section {
  background: var(--night); color: var(--white);
  padding: 96px 2.5rem; position: relative; overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 40%, rgba(200,118,14,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner {
  max-width: 760px; margin: 0 auto;
  text-align: center; position: relative; z-index: 1;
}
.cta-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--amber-light); margin-bottom: 1.25rem;
}
.cta-title {
  font-family: var(--ff-display);
  font-size: clamp(36px, 4.5vw, 58px);
  font-weight: 500; line-height: 1.05; letter-spacing: -0.01em;
  color: var(--white); margin-bottom: 1.25rem;
}
.cta-title em { font-style: italic; color: rgba(255,255,255,0.4); }
.cta-body {
  font-size: 17px; font-weight: 300; line-height: 1.65;
  color: rgba(255,255,255,0.52); margin-bottom: 2.5rem;
}
.cta-body strong { color: rgba(255,255,255,0.85); font-weight: 400; }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.cta-note {
  margin-top: 1.75rem; font-size: 13px; color: rgba(255,255,255,0.3);
  font-weight: 300; line-height: 1.6;
}

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { display: none; }
  .constraint-grid,
  .value-grid,
  .pilot-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .compare-grid,
  .ramp-grid { grid-template-columns: 1fr; gap: 1rem; }
  section, .comparison, .strategic, .cta-section, .pilot { padding: 64px 1.5rem; }
  .hero { padding: 100px 1.5rem 80px; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 46px; }
  .cta-title { font-size: 32px; }
  section, .comparison, .strategic, .cta-section, .pilot { padding: 48px 1rem; }
  .hero { padding: 90px 1rem 64px; }
}
/* Shared inline links for audience pages. */
.section-body a,
.value-item-body a {
  color: var(--amber-deep);
  text-decoration-color: rgba(168,92,8,0.38);
  text-underline-offset: 3px;
}

.section-body a:hover,
.value-item-body a:hover {
  text-decoration-color: var(--amber-deep);
}

/* Mechanism section framing; shared diagram styles live in mechanism.css. */
.mechanism { background: var(--night); color: var(--white); }
.mechanism .site-overline { color: var(--amber-light); }
.mechanism .section-title { color: var(--white); }
.mechanism .section-body { color: rgba(255,255,255,0.55); }
.mechanism-deck-link-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}
.mechanism .mechanism-deck-link {
  color: var(--amber-light);
  border-color: rgba(232,156,58,0.35);
}
.mechanism .mechanism-deck-link:hover {
  color: var(--white);
  border-color: var(--amber-light);
}
.distinction { background: var(--paper); }
.distinction .section-body { max-width: 660px; }
.distinction .compare-card.modelled {
  background: var(--paper-warm);
  border-color: var(--border);
}
.distinction .compare-card.modelled .compare-card-label { color: var(--ink-muted); }
.distinction .compare-card.modelled .dot { background: var(--ink-ghost); }
.distinction .compare-card.arc {
  background: var(--blue-pale);
  border-color: rgba(58,110,168,0.2);
}
.distinction .compare-card.arc .compare-card-label { color: var(--blue-dark); }
.distinction .compare-card.arc .dot { background: var(--blue); }
.distinction .compare-card-body { color: var(--ink-muted); }
.distinction .compare-footnote {
  margin-bottom: 0; background: var(--white); border-color: var(--border);
  color: var(--ink-muted);
}
.distinction-link-row { margin-top: 1rem; }