:root {
  --bg: #f4f8f6;
  --card: #ffffff;
  --text: #102e26;
  --muted: #4b665c;
  --accent: #11895f;
  --accent-dark: #0b6a49;
  --accent-light: #ddf2e7;
  --line: #d8e8e1;
  --hero-grad: radial-gradient(circle at 0% 0%, #dcf4e8 0%, #edf8f3 38%, #ffffff 75%);
  --radius: 14px;
  --shadow: 0 10px 28px rgba(16, 46, 38, 0.06);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container { width: min(1120px, 92vw); margin: 0 auto; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(6px);
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1.2rem;
  padding: .9rem 0;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  color: var(--text);
}

.brand-logo { height: 56px; object-fit: contain; border-radius: 12px; background: #fff; }

.brand-text { font-weight: 700; letter-spacing: .01em; }

.top-nav { display: flex; gap: .35rem; flex-wrap: wrap; }

.top-nav a {
  color: #1f4136;
  text-decoration: none;
  font-weight: 600;
  padding: .45rem .75rem;
  border-radius: 999px;
  transition: background-color .2s ease, color .2s ease;
}

.top-nav a:hover,
.top-nav a.active { background: #e6f4ed; color: var(--accent-dark); }

/* Hero */
.eyebrow {
  margin: 0 0 .3rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
  font-size: .82rem;
}

h1 { margin: 0; font-size: clamp(1.6rem, 3vw, 2.5rem); line-height: 1.3; }

.subhead { margin: .5rem 0 0; color: var(--muted); font-size: 1rem; }

.hero {
  background: linear-gradient(120deg, rgba(8, 35, 27, 0.78), rgba(11, 58, 44, 0.58)), url("src/785A1801-scaled.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 3.1rem 0 2.4rem;
  border-bottom: 1px solid var(--line);
}

.hero .eyebrow { color: #ccf7e6; }
.hero h1 { color: #fff; }
.hero .subhead { color: rgba(255, 255, 255, 0.92); }

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr .9fr;
  gap: 1.25rem;
  align-items: stretch;
}

.hero-copy {
  max-width: 62ch;
  color: rgba(255, 255, 255, 0.92);
  margin: .8rem 0 1.2rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 0 0 1rem;
}

.chip {
  background: rgba(255, 255, 255, 0.14);
  color: #eefcf6;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: .28rem .72rem;
  font-size: .82rem;
  font-weight: 600;
}

.hero-actions { display: flex; gap: .7rem; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 700;
  padding: .7rem 1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: background .2s, transform .15s;
}

.btn:active { transform: scale(.97); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.48);
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.hero-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 18px;
  padding: 1.05rem 1rem .9rem;
  box-shadow: 0 18px 38px rgba(16, 46, 38, 0.09);
  backdrop-filter: blur(4px);
}

.hero-card h2 { margin: 0; font-size: 1.05rem; }
.hero-card ul { margin-top: .7rem; }

/* Stats / Quick Overview */
.stats { padding: 1.25rem 0; }
.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.stat-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .95rem;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: border-color .2s, box-shadow .2s;
}

.stat-card:hover { border-color: var(--accent); box-shadow: 0 10px 28px rgba(17, 137, 95, 0.12); }
.stat-card h3 { margin: .55rem 0 .2rem; font-size: 1rem; }
.stat-card p { margin: 0; color: var(--muted); font-size: .92rem; }
.stat-card .icon { margin-bottom: .3rem; }

/* Sections */
.section { padding: 1.2rem 0 2rem; }
.muted { background: #edf4f1; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.grid { display: grid; gap: 1rem; }
.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.feature-card {
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: rgba(17, 137, 95, 0.07);
}

h2, h3 { margin-top: 0; }
h3 { margin-bottom: .35rem; }

.section-head { margin-bottom: 1rem; }
.section-head p { margin: .4rem 0 0; color: var(--muted); max-width: 72ch; }

.accent-band {
  background: linear-gradient(180deg, #ebf7f1 0%, #f6fcf9 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.objectives-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.objective {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .85rem .9rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .7rem;
  align-items: start;
}

.objective span {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-weight: 700;
}

.objective p { margin: .1rem 0 0; }
ul { padding-left: 1.1rem; margin: .5rem 0 0; }
.icon { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; border-radius: 50%; background: var(--accent-light); font-size: 1rem; }

/* Accordion */
.accordion-group { margin-top: .5rem; }

.accordion-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: .6rem;
  overflow: hidden;
  transition: box-shadow .2s;
}

.accordion-item:hover { box-shadow: var(--shadow); }

.accordion-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1rem;
  cursor: pointer;
  user-select: none;
  transition: background .2s;
}

.accordion-header:hover { background: #f6fbf8; }

.accordion-header .icon {
  flex-shrink: 0;
  width: 2.2rem;
  height: 2.2rem;
  font-size: 1.1rem;
}

.accordion-header h3 {
  flex: 1;
  margin: 0;
  font-size: .98rem;
}

.accordion-header .toggle-icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-weight: 700;
  transition: transform .25s ease;
}

.accordion-header.active .toggle-icon { transform: rotate(180deg); }

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.accordion-panel.open { max-height: 600px; }

.accordion-panel-inner {
  padding: 0 1rem 1rem 3.4rem;
}

.accordion-panel-inner h4 {
  margin: 0 0 .3rem;
  font-size: .92rem;
  color: var(--accent-dark);
}

.accordion-panel-inner ul { margin: .25rem 0 .5rem; padding-left: 1rem; }
.accordion-panel-inner ul li { margin-bottom: .15rem; font-size: .9rem; color: #2f4d40; }

.outcome-row {
  margin-top: .55rem;
  padding: .4rem .6rem;
  background: #f0faf4;
  border-radius: 8px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--accent-dark);
  display: inline-block;
}

.outcome-summary {
  margin-top: .6rem;
  padding: .65rem .8rem;
  background: #f0faf4;
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--accent-dark);
}

/* Operating Model */
.model-visual {
  margin-top: 1.2rem;
}

.model-layers {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.model-layer {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  position: relative;
  transition: transform .2s, box-shadow .2s;
}

.model-layer:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.model-layer .layer-num {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
}

.model-layer h3 { margin: .15rem 0 .1rem; font-size: 1.05rem; }
.model-layer p { margin: 0; color: var(--muted); font-size: .9rem; }

.model-layer.layer-core {
  border-left: 4px solid var(--accent);
  background: linear-gradient(135deg, #f0faf4, #fff);
}

.model-layer.layer-engage {
  border-left: 4px solid #2d8fce;
  background: linear-gradient(135deg, #f0f5fa, #fff);
}

.model-layer.layer-implement {
  border-left: 4px solid #d48c23;
  background: linear-gradient(135deg, #faf5f0, #fff);
}

.model-layer.layer-support {
  border-left: 4px solid #8c6bb8;
  background: linear-gradient(135deg, #f5f0fa, #fff);
  margin-top: .3rem;
}

.model-arrow {
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
  padding: .15rem 0;
}

/* Pathway Buttons */
.pathway-bar {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  margin: .8rem 0 1rem;
}

.path-btn {
  flex: 1;
  min-width: 140px;
  padding: .7rem .9rem;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  font-weight: 700;
  font-size: .92rem;
  color: var(--text);
  cursor: pointer;
  transition: all .2s;
  text-align: center;
}

.path-btn:hover {
  border-color: var(--accent);
  background: #f0faf4;
}

.path-btn.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.path-content {
  display: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  margin-top: .5rem;
  box-shadow: var(--shadow);
  animation: fadeSlideIn .3s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.path-content h4 {
  margin: 0 0 .5rem;
  color: var(--accent-dark);
}

.path-content ul { margin: 0; padding-left: 1.1rem; }

/* Impact monitoring chips */
.impact-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: .8rem 0 0;
}

.impact-chips .chip {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text);
  font-size: .85rem;
}

/* Living lab example chips */
.lab-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: .5rem 0;
}

.lab-chips .chip {
  background: var(--accent-light);
  border: 1px solid transparent;
  color: var(--accent-dark);
}

/* Timeline */
.timeline {
  list-style: none;
  margin: .4rem 0 0;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.timeline li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .8rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .85rem .95rem;
}

.timeline li span {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.timeline li h3 { margin-bottom: .1rem; }
.timeline li p { margin: 0; color: var(--muted); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  padding: .8rem 0;
}

/* Partner strip */
.partner-strip {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: .55rem;
}

.partner-strip span {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-align: center;
  padding: .55rem .4rem;
  font-weight: 700;
  color: #2a4d40;
}

/* CTA */
.cta-band {
  background: linear-gradient(130deg, #0f6b4a 0%, #11895f 60%, #1f9a72 100%);
  color: #fff;
}

.cta-wrap {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

.cta-wrap p { margin: .4rem 0 0; max-width: 66ch; color: rgba(255, 255, 255, 0.92); }
.cta-band .btn-primary { background: #fff; color: #0f6b4a; }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}

.reveal.show { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .two,
  .three,
  .four { grid-template-columns: 1fr; }

  .objectives-grid,
  .partner-strip { grid-template-columns: 1fr; }

  .cta-wrap { flex-direction: column; align-items: flex-start; }
  .nav-wrap { align-items: flex-start; flex-direction: column; }

  .pathway-bar { flex-direction: column; }
  .path-btn { min-width: 0; }
}

@media (max-width: 640px) {
  .hero { padding: 2rem 0 1.6rem; }
  .hero-actions { flex-direction: column; }
  .stat-card { padding: .7rem; }
  .section-head p { max-width: 100%; }
  .model-layer { padding: .65rem .7rem; }
  .accordion-header { padding: .65rem .75rem; }
  .accordion-panel-inner { padding: 0 .75rem .75rem 2.8rem; }
}