:root {
  --bg: #0f0f0f;
  --bg-2: #161616;
  --accent: #F59E0B;
  --accent-dim: #B4730A;
  --text: #FAFAFA;
  --text-2: #A1A1A1;
  --text-3: #6B6B6B;
  --border: #252525;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigation ── */
nav {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 2rem;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
}
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
}
.nav-tagline {
  font-size: 0.875rem;
  color: var(--text-2);
  font-weight: 300;
}

/* ── Section Commons ── */
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 700px;
}

/* ── Hero ── */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem 6rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.hero-headline {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2.5rem, 4vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: 1.125rem;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 2rem;
  font-weight: 300;
}
.hero-trust {
  font-size: 0.8rem;
  color: var(--text-3);
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

/* Call Widget */
.call-widget {
  background: #1c1c1c;
  border: 1px solid #2e2e2e;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 40px rgba(245,158,11,0.06);
}
.call-widget-header {
  background: #111;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  border-bottom: 1px solid #2e2e2e;
}
.call-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-3);
}
.call-dot.active {
  background: #22c55e;
  box-shadow: 0 0 8px rgba(34,197,94,0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.call-widget-body {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  border-bottom: 1px solid #2e2e2e;
}
.call-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #2a2a2a;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  flex-shrink: 0;
}
.call-caller { font-weight: 600; font-size: 0.95rem; margin-bottom: 0.2rem; }
.call-number { font-size: 0.8rem; color: var(--text-3); }

.transcript {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.transcript-line {
  font-size: 0.8rem;
  line-height: 1.5;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
}
.transcript-line.agent {
  background: rgba(245,158,11,0.08);
  color: #d4a84a;
  border-left: 3px solid var(--accent-dim);
}
.transcript-line.user {
  background: #1e1e1e;
  color: var(--text-2);
}
.call-outcome {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.25rem;
  background: rgba(34,197,94,0.07);
  color: #4ade80;
  font-size: 0.8rem;
  font-weight: 500;
  border-top: 1px solid rgba(34,197,94,0.15);
}

/* ── How It Works ── */
.howitworks {
  background: var(--bg-2);
  padding: 6rem 2rem;
}
.howitworks .section-title { max-width: 100%; margin-bottom: 4rem; }
.steps-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.step-card {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}
.step-icon {
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.step-num {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 2rem;
  color: #1e1e1e;
  background: -webkit-linear-gradient(135deg, #333, #1a1a1a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}
.step-card h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}
.step-card p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.65;
  font-weight: 300;
}

/* ── Stats ── */
.stats-section {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 4rem 2rem;
}
.stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 3rem;
}
.stat-item { text-align: center; }
.stat-value {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  color: var(--accent);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-2);
  max-width: 200px;
  margin: 0 auto;
  line-height: 1.5;
}
.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
}

/* ── Industries ── */
.industries {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}
.industries-body {
  color: var(--text-2);
  font-size: 1rem;
  margin-top: 1.5rem;
  max-width: 380px;
  line-height: 1.7;
  font-weight: 300;
}
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.industry-card {
  background: var(--bg);
  padding: 1.5rem;
}
.industry-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}
.industry-use {
  font-size: 0.8rem;
  color: var(--text-3);
  line-height: 1.5;
  font-weight: 300;
}

/* ── Pricing ── */
.pricing {
  background: var(--bg-2);
  padding: 6rem 2rem;
  text-align: center;
}
.pricing .section-label { display: inline-block; }
.pricing .section-title { max-width: 100%; margin: 0 auto 4rem; }
.pricing-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.pricing-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: left;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 40px rgba(245,158,11,0.08);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #0f0f0f;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 1rem;
  border-radius: 20px;
}
.pricing-tier {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.pricing-amount {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 2.75rem;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--text);
}
.pricing-period {
  font-size: 1rem;
  color: var(--text-2);
  font-weight: 400;
}
.pricing-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  font-weight: 300;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
}
.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.pricing-features li {
  font-size: 0.875rem;
  color: var(--text-2);
  padding-left: 1.5rem;
  position: relative;
  font-weight: 300;
}
.pricing-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* ── Testimonials ── */
.testimonials {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
}
.testimonials .section-title { max-width: 100%; margin-bottom: 3rem; }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}
.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  font-weight: 300;
}
.testimonial-author {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
}

/* ── Closing ── */
.closing {
  background: linear-gradient(135deg, #1a1200, #0f0f0f);
  padding: 6rem 2rem;
  text-align: center;
  border-top: 1px solid rgba(245,158,11,0.15);
}
.closing h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
  max-width: 600px;
  margin: 0 auto 1.25rem;
  color: var(--text);
}
.closing p {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 480px;
  margin: 0 auto 1.5rem;
  font-weight: 300;
}
.closing-statement {
  font-size: 0.9rem;
  color: var(--text-3);
  font-weight: 300;
  max-width: 420px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}
.footer-brand {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}
.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-3);
  margin-bottom: 1.5rem;
  font-weight: 300;
}
.footer-copy {
  font-size: 0.75rem;
  color: var(--text-3);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 3rem; padding: 3rem 1.5rem 4rem; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .industries { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr; gap: 2rem; }
  .stat-divider { display: none; }
}
@media (max-width: 480px) {
  .steps-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════
   HVAC Vertical Landing Page  (/hvac)
   ══════════════════════════════════════════════════ */

/* ── HVAC Hero ── */
.hvac-hero {
  padding: 4rem 2rem 5rem;
  border-bottom: 1px solid var(--border);
}
.hvac-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.loss-headline-number {
  color: var(--accent);
  font-style: normal;
}
.hvac-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.trust-badge {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-3);
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
}

/* ── ROI Calculator Card ── */
.calc-card {
  background: #1c1c1c;
  border: 1px solid #2e2e2e;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 40px rgba(245,158,11,0.06);
}
.calc-header {
  background: #111;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  border-bottom: 1px solid #2e2e2e;
}
.calc-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Slider inputs */
.calc-input-group { display: flex; flex-direction: column; gap: 0.5rem; }
.calc-input-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-2);
}
.calc-input-value {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  color: var(--accent);
  font-size: 1rem;
}
.calc-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}
.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(245,158,11,0.4);
}
.calc-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}
.calc-slider-range {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-3);
}

/* Results */
.calc-results {
  background: #131313;
  border: 1px solid #222;
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.calc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-2);
}
.calc-result-row.highlight {
  color: var(--text);
}
.calc-result-row.big {
  border-top: 1px solid #2e2e2e;
  padding-top: 0.6rem;
  margin-top: 0.2rem;
}
.calc-result-num {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}
.calc-result-num.loss { color: #f87171; }
.calc-result-num.win  { color: #4ade80; font-size: 1.25rem; }
.calc-result-num.muted { color: var(--text-3); }
.calc-divider {
  border: none;
  border-top: 1px solid #2e2e2e;
  margin: 0.2rem 0;
}

.calc-cta {
  display: block;
  text-align: center;
  background: var(--accent);
  color: #0f0f0f;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.875rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s;
}
.calc-cta:hover { background: #e08e00; }
.calc-footnote {
  font-size: 0.7rem;
  color: var(--text-3);
  text-align: center;
}

/* ── How It Works (HVAC) ── */
.hvac-how {
  background: var(--bg-2);
  padding: 6rem 2rem;
}
.hvac-how-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.hvac-how-inner .section-title { margin-bottom: 3.5rem; }
.hvac-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
.hvac-step {
  border-top: 2px solid var(--accent);
  padding-top: 1.75rem;
}
.hvac-step-num {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 2.5rem;
  color: rgba(245,158,11,0.12);
  line-height: 1;
  margin-bottom: 0.75rem;
}
.hvac-step-icon {
  color: var(--accent);
  margin-bottom: 1rem;
}
.hvac-step h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}
.hvac-step p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.7;
  font-weight: 300;
}

/* ── Social Proof ── */
.hvac-proof {
  padding: 4rem 2rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.hvac-proof-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}
.proof-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1.5rem;
}
.proof-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.proof-logo-slot {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-3);
  border: 1px solid var(--border);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  opacity: 0.6;
}
.proof-quote {
  max-width: 600px;
  margin: 0 auto;
}
.proof-quote blockquote {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.7;
  font-style: italic;
  font-weight: 300;
  margin-bottom: 0.75rem;
}
.proof-quote cite {
  font-size: 0.8rem;
  color: var(--accent);
  font-style: normal;
  font-weight: 500;
}

/* ── Demo CTA ── */
.hvac-demo-cta {
  padding: 6rem 2rem;
  text-align: center;
}
.hvac-demo-inner {
  max-width: 700px;
  margin: 0 auto;
}
.hvac-demo-inner .section-title { margin: 0 auto 1.25rem; max-width: 100%; }
.hvac-demo-sub {
  font-size: 1rem;
  color: var(--text-2);
  margin-bottom: 2rem;
  font-weight: 300;
}

/* ── Booking CTA ── */
.hvac-book {
  background: var(--bg-2);
  padding: 6rem 2rem;
  border-top: 1px solid var(--border);
}
.hvac-book-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.book-bullets {
  list-style: none;
  margin-top: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.book-bullets li {
  font-size: 0.9rem;
  color: var(--text-2);
  padding-left: 1.25rem;
  position: relative;
  font-weight: 300;
}
.book-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* Form */
.book-form { display: flex; flex-direction: column; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
}
.form-input {
  background: #1c1c1c;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
}
.form-input::placeholder { color: var(--text-3); }
.form-input:focus { border-color: var(--accent); }
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #0f0f0f;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  font-family: 'DM Sans', sans-serif;
}
.btn-primary:hover { background: #e08e00; }
.btn-full { width: 100%; text-align: center; }
.form-note {
  font-size: 0.75rem;
  color: var(--text-3);
  text-align: center;
}
.form-success {
  align-items: center;
  gap: 0.5rem;
  background: rgba(34,197,94,0.07);
  color: #4ade80;
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
}

/* ── HVAC Responsive ── */
@media (max-width: 900px) {
  .hvac-hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hvac-steps { grid-template-columns: 1fr; gap: 2rem; }
  .hvac-book-inner { grid-template-columns: 1fr; gap: 3rem; }
}
@media (max-width: 600px) {
  .hvac-hero { padding: 3rem 1.25rem 4rem; }
  .calc-body { padding: 1.25rem; }
  .hvac-how { padding: 4rem 1.25rem; }
  .hvac-book { padding: 4rem 1.25rem; }
}