:root {
  --bg: #f6f3ee;
  --surface: #ffffff;
  --ink: #1a2332;
  --muted: #5c6b7a;
  --accent: #0d6e6e;
  --accent-dark: #0a5555;
  --accent-soft: #d8efef;
  --border: #e2dbd0;
  --warn: #b45309;
  --danger: #b91c1c;
  --ok: #047857;
  --shadow: 0 10px 30px rgba(26, 35, 50, 0.08);
  --radius: 14px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }
img { max-width: 100%; }

.container { width: min(1100px, calc(100% - 2rem)); margin: 0 auto; }
.narrow { width: min(720px, calc(100% - 2rem)); margin: 0 auto; }

/* Public site nav */
.site-header {
  background: rgba(246, 243, 238, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}
.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.05rem;
}
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 1.1rem; align-items: center; flex-wrap: wrap; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.65rem 1.15rem;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: 0.15s ease;
}
.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover { background: var(--accent-dark); color: white; text-decoration: none; }
.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--ink);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-danger { background: var(--danger); color: white; }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.85rem; }

.hero {
  padding: 4.5rem 0 3.5rem;
  background:
    radial-gradient(circle at top right, rgba(13, 110, 110, 0.12), transparent 40%),
    linear-gradient(180deg, #efe9df 0%, var(--bg) 100%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 0.75rem;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}
.lead { font-size: 1.1rem; color: var(--muted); margin: 0 0 1.5rem; }
.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow);
}
.hero-card h3 { margin: 0 0 0.75rem; font-size: 1rem; }
.hero-card ul { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.hero-card li { margin: 0.35rem 0; }

.section { padding: 3.5rem 0; }
.section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}
.section-intro { color: var(--muted); max-width: 60ch; margin-bottom: 2rem; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); }

.steps { counter-reset: step; display: grid; gap: 1rem; }
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.step-num {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-weight: 700;
}
.step h3 { margin: 0 0 0.25rem; font-size: 1rem; }
.step p { margin: 0; color: var(--muted); }

.cta-band {
  background: var(--ink);
  color: white;
  border-radius: calc(var(--radius) + 4px);
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}
.cta-band p { margin: 0.35rem 0 0; color: #c7d0da; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Forms */
label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 0.35rem; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  font: inherit;
  background: white;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}
.form-row { margin-bottom: 1rem; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.alert {
  border-radius: 10px;
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
}
.alert-ok { background: #ecfdf5; color: var(--ok); border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-info { background: var(--accent-soft); color: var(--accent-dark); border: 1px solid #9ed9d9; }

/* Case study / savings graphics */
.case-hero {
  padding-bottom: 2.5rem;
}
.hero-savings-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  margin-top: 2rem;
}
.hero-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1rem;
  box-shadow: var(--shadow);
}
.hero-stat-value {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--accent-dark);
  line-height: 1.1;
}
.hero-stat-label {
  margin-top: 0.35rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.savings-compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: stretch;
}
.compare-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
}
.compare-before { opacity: 0.92; }
.compare-after {
  border-color: #9ed9d9;
  background: linear-gradient(180deg, #f0faf9 0%, var(--surface) 55%);
}
.compare-arrow {
  display: grid;
  place-items: center;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
}
.cost-list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
}
.cost-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.cost-list li:last-child { border-bottom: none; }
.cost-list span { color: var(--muted); }
.cost-list strong.save { color: var(--ok); }

.savings-visual-section {
  background: linear-gradient(180deg, #efe9df 0%, var(--bg) 100%);
}
.bar-chart { display: grid; gap: 1rem; margin: 1.5rem 0 2rem; }
.bar-row {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: 0.75rem;
  align-items: center;
}
.bar-label { font-size: 0.9rem; font-weight: 600; color: var(--muted); }
.bar-track {
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border);
  border-radius: 999px;
  height: 2.4rem;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  width: var(--w, 50%);
  background: linear-gradient(90deg, var(--accent) 0%, #149494 100%);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 0.85rem;
  color: white;
  font-weight: 700;
  font-size: 0.9rem;
  min-width: 4rem;
  animation: barGrow 0.9s ease-out;
}
.bar-fill-2 { background: linear-gradient(90deg, #0a5555 0%, #0d6e6e 100%); }
.bar-fill-3 { background: linear-gradient(90deg, #b45309 0%, #d97706 100%); }
@keyframes barGrow {
  from { width: 0; opacity: 0.6; }
}

.total-savings-callout {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  background: var(--ink);
  color: white;
  border-radius: calc(var(--radius) + 4px);
  padding: 1.75rem 2rem;
}
.total-savings-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: #9ed9d9;
  font-weight: 700;
}
.total-savings-figure {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0.25rem 0 0.5rem;
}
.total-savings-callout p { margin: 0; color: #c7d0da; max-width: 36ch; }
.payback-ring {
  width: 7.5rem;
  height: 7.5rem;
  border-radius: 50%;
  border: 4px solid var(--accent);
  background: radial-gradient(circle at 30% 30%, #1e3a4a, #102033);
  display: grid;
  place-content: center;
  text-align: center;
}
.payback-num {
  font-size: 2rem;
  font-weight: 800;
  color: #9ed9d9;
  line-height: 1;
}
.payback-unit {
  font-size: 0.72rem;
  color: #c7d0da;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.quote-card {
  background: var(--surface);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow);
}
.quote-card blockquote {
  margin: 0;
  font-size: 1.2rem;
  font-style: italic;
  line-height: 1.45;
}
.quote-card cite {
  display: block;
  margin-top: 0.85rem;
  color: var(--muted);
  font-style: normal;
  font-size: 0.9rem;
}

.security-banner {
  margin-top: 1.75rem;
  padding: 1.15rem 1.35rem;
  background: var(--accent-soft);
  border: 1px solid #9ed9d9;
  border-radius: var(--radius);
  color: var(--accent-dark);
  font-size: 1.02rem;
  line-height: 1.45;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.5rem;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 1.02rem;
  padding: 1rem 1.15rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item summary:hover { background: #faf8f5; }
.faq-body {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--border);
}
.faq-body p {
  margin: 0.85rem 0 0;
  color: var(--ink);
}
.faq-body p:first-child { margin-top: 1rem; }
.faq-body ul {
  margin: 0.65rem 0 0;
  padding-left: 1.2rem;
  color: var(--ink);
}
.faq-body li { margin: 0.35rem 0; }

.home-savings-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}
.savings-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: 0.15s ease;
  box-shadow: var(--shadow);
}
.savings-tile:hover {
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-2px);
}
.savings-tile-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-dark);
  letter-spacing: -0.03em;
}
.savings-tile-label {
  margin-top: 0.3rem;
  font-weight: 600;
  font-size: 0.92rem;
}
.savings-tile-cta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--accent-soft);
  border-color: #9ed9d9;
}

@media (max-width: 900px) {
  .hero-savings-row,
  .home-savings-grid,
  .savings-compare { grid-template-columns: 1fr; }
  .compare-arrow { transform: rotate(90deg); padding: 0.25rem 0; }
  .bar-row { grid-template-columns: 1fr; }
}

/* Legal documents */
.legal-page .legal-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: -0.5rem 0 1.5rem;
}
.legal-body h3 {
  margin: 1.75rem 0 0.6rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.legal-body p, .legal-body li {
  color: var(--ink);
  font-size: 0.96rem;
}
.legal-body ul, .legal-body ol {
  padding-left: 1.25rem;
  margin: 0.5rem 0 1rem;
}
.legal-body li { margin: 0.35rem 0; }
.legal-disclaimer {
  margin-top: 2rem;
  padding: 1rem 1.1rem;
  background: #f0ebe3;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.88rem;
  color: var(--muted);
}
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-weight: 500;
  font-size: 0.92rem;
  cursor: pointer;
}
.checkbox-label input {
  width: auto;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

@media (max-width: 800px) {
  .hero-grid, .grid-3, .grid-2, .form-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 0.75rem; }
}