:root {
  --bg: #0b1117;
  --surface: #151c24;
  --surface-strong: #1c252f;
  --border: #2b3642;
  --text: #f4f7fb;
  --muted: #a9b4c0;
  --soft: #d8e0ea;
  --accent: #63a1ff;
  --accent-strong: #4f8ee8;
  --success: #8ee6b5;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(99, 161, 255, 0.14), transparent 32rem),
    linear-gradient(180deg, #0b1117 0%, #0d141b 48%, #0a1016 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.06rem;
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(11, 17, 23, 0.92);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.logo {
  flex: 0 0 auto;
  color: var(--text);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.98rem;
  font-weight: 700;
}

.nav-links > a,
.feature-menu > summary {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  color: var(--muted);
}

.nav-links > a:hover,
.feature-menu > summary:hover {
  color: var(--text);
}

.feature-menu {
  position: relative;
}

.feature-menu > summary {
  gap: 0.4rem;
  list-style: none;
  cursor: pointer;
}

.feature-menu > summary::-webkit-details-marker {
  display: none;
}

.feature-menu > summary::after {
  width: 0.42rem;
  height: 0.42rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  content: "";
  transform: rotate(45deg) translateY(-1px);
}

.feature-menu[open] > summary::after {
  transform: rotate(225deg) translate(-1px, -1px);
}

.feature-menu-panel {
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  width: min(21rem, calc(100vw - 2.5rem));
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #111820;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
}

.feature-menu-panel a {
  display: block;
  padding: 0.7rem 0.8rem;
  border-radius: 8px;
  color: var(--soft);
  font-size: 0.94rem;
}

.feature-menu-panel a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.72rem 1rem;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.1;
}

.btn-primary {
  background: var(--accent);
  color: #06101c;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 34px rgba(99, 161, 255, 0.24);
  transition: 0.15s ease-out;
}

.btn-primary:hover {
  background: #7ab1ff;
  transform: translateY(-2px);
}

.btn-large {
  min-height: 52px;
  padding: 0.9rem 1.4rem;
  font-size: 1.02rem;
}

.hero {
  padding: 3rem 0 2rem;
}

.hero .wrap {
  max-width: 1360px;
}

.hero-grid {
  display: grid;
  align-items: center;
  gap: 4rem;
}

.hero-copy {
  max-width: 41rem;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--success);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 37rem;
  margin-bottom: 1.25rem;
  color: var(--text);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.04;
}

.lead {
  max-width: 36rem;
  margin-bottom: 1.75rem;
  color: var(--soft);
  font-size: clamp(1.05rem, 1.55vw, 1.16rem);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.hero-note {
  max-width: 34rem;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.98rem;
}
.product-preview {
  margin: 2.75rem 1.5rem 2.75rem 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
}
.hero-unit-mock {
  overflow: hidden;
  width: min(100%, 780px);
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  background: #1a222c;
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.35),
    0 4px 12px rgba(0, 0, 0, 0.25);
}

.hero-unit-header {
  padding: clamp(1.2rem, 2.2vw, 1.6rem) clamp(1.35rem, 2.5vw, 2rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: #0f141a;
}

.hero-unit-header p {
  margin: 0 0 0.35rem;
  color: #a7f3c5;
  font-size: clamp(0.72rem, 1.4vw, 0.92rem);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.hero-unit-header h2 {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.25rem, 2.8vw, 2rem);
  font-weight: 800;
  line-height: 1.08;
}

.hero-unit-content {
  display: grid;
  gap: clamp(1rem, 2vw, 1.35rem);
  padding: clamp(1.25rem, 2.8vw, 2rem);
}

.hero-unit-stage {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 4.5rem 1fr;
  align-items: center;
  gap: clamp(0.8rem, 1.8vw, 1.2rem);
}

.unit-card {
  min-height: clamp(7.5rem, 13vw, 10rem);
  padding: clamp(1rem, 2vw, 1.35rem);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.025));
}

.unit-icon {
  display: block;
  width: clamp(2.2rem, 4vw, 3rem);
  height: clamp(2.2rem, 4vw, 3rem);
  margin-bottom: clamp(0.85rem, 1.5vw, 1rem);
  border: 1px solid rgba(59, 130, 246, 0.58);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.28), rgba(255, 255, 255, 0.04));
  box-shadow: inset 0 0 22px rgba(59, 130, 246, 0.16);
}

.unit-card strong {
  display: block;
  color: var(--text);
  font-size: clamp(1.1rem, 2.6vw, 1.65rem);
  font-weight: 800;
  line-height: 1.05;
}

.unit-card span:last-child {
  display: block;
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: clamp(0.82rem, 1.6vw, 1rem);
  font-weight: 700;
}

.unit-link {
  position: relative;
  height: 3rem;
}

.unit-link::before,
.unit-link::after {
  position: absolute;
  top: 50%;
  width: 0.72rem;
  height: 0.72rem;
  border: 3px solid #3b82f6;
  border-radius: 999px;
  background: #1a222c;
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.55);
  content: "";
  transform: translateY(-50%);
}

.unit-link::before { left: 0; }
.unit-link::after { right: 0; }

.unit-link span {
  position: absolute;
  top: 50%;
  right: 0.45rem;
  left: 0.45rem;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.25), #3b82f6, rgba(59, 130, 246, 0.25));
  transform: translateY(-50%);
}

.hero-unit-metrics,
.hero-workflow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.hero-unit-metrics span {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(59, 130, 246, 0.34);
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.14);
  color: #dbeafe;
  font-size: clamp(0.82rem, 1.45vw, 1rem);
  font-weight: 800;
}

.hero-workflow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
}

.hero-workflow span {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(15, 20, 26, 0.54);
  color: var(--soft);
  font-size: clamp(0.78rem, 1.35vw, 0.95rem);
  font-weight: 800;
}

.value-strip {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.value-strip-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  padding-top: 0;
  padding-bottom: 0;
}

.value-strip-grid span {
  padding: 1rem 0;
  color: var(--soft);
  font-size: 0.94rem;
  font-weight: 800;
}

.section-block {
  padding-top: 3rem;
  padding-bottom: 4rem;
}

.section-break {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.015);
}

.section-heading {
  max-width: 48rem;
  margin-bottom: 2rem;
}

.section-heading h2,
.demo-panel h2 {
  margin-bottom: 0;
  color: var(--text);
  font-size: clamp(1.85rem, 3.4vw, 2.65rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.1;
}

.feature-list {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.11);
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding: 2.4rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
}

.feature-body {
  min-width: 0;
}

.feature-body h3 {
  margin-bottom: 0.75rem;
  color: var(--text);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.14;
}

.feature-lead {
  margin-bottom: 0.35rem;
  color: var(--text);
  font-size: clamp(1.04rem, 1.55vw, 1.14rem);
  font-weight: 780;
  line-height: 1.35;
}

.feature-body p:not(.feature-lead) {
  max-width: 58rem;
  margin-bottom: 0;
  color: var(--soft);
  font-size: clamp(1.02rem, 1.45vw, 1.12rem);
  line-height: 1.5;
}

.switch-panel,
.team-panel {
  padding: 2.6rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
}

.switch-copy,
.team-copy {
  max-width: 58rem;
}

.switch-copy h3,
.team-copy h3 {
  margin-bottom: 0.85rem;
  color: var(--text);
  font-size: clamp(1.65rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.12;
  text-transform: uppercase;
}

.switch-copy p:not(.feature-lead),
.team-copy p:not(.feature-lead) {
  margin-bottom: 1.35rem;
  color: var(--soft);
  font-size: clamp(1.02rem, 1.45vw, 1.12rem);
}

.switch-list,
.team-list {
  display: grid;
  gap: 0.7rem;
  max-width: 48rem;
  margin: 0 0 1.35rem;
  padding: 0;
  color: var(--soft);
  font-size: clamp(1.02rem, 1.45vw, 1.12rem);
  list-style: none;
}

.switch-list li,
.team-list li {
  position: relative;
  padding-left: 1.35rem;
}

.switch-list li::before,
.team-list li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 0.32rem;
  height: 0.32rem;
  border-radius: 999px;
  background: var(--muted);
  content: "";
}

.switch-note {
  margin-bottom: 0;
  color: var(--soft);
  font-size: clamp(1.02rem, 1.45vw, 1.12rem);
  font-style: italic;
  font-weight: 700;
}

.demo-explainer {
  padding-top: 0.5rem;
  padding-bottom: 4rem;
}

.demo-explainer h2 {
  margin-bottom: 1.2rem;
  color: var(--text);
  font-size: clamp(1.65rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.12;
  text-transform: uppercase;
}

.demo-explainer p:not(.feature-lead) {
  max-width: 44rem;
  margin-bottom: 1.25rem;
  color: var(--soft);
  font-size: clamp(1.02rem, 1.45vw, 1.12rem);
}

.demo-list {
  display: grid;
  gap: 0.7rem;
  max-width: 42rem;
  margin: 0 0 1.35rem;
  padding: 0;
  color: var(--soft);
  font-size: clamp(1.02rem, 1.45vw, 1.12rem);
  list-style: none;
}

.demo-list li {
  position: relative;
  padding-left: 1.35rem;
}

.demo-list li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 0.32rem;
  height: 0.32rem;
  border-radius: 999px;
  background: var(--muted);
  content: "";
}

.demo-explainer .demo-reassurance {
  margin-bottom: 0;
  color: var(--soft);
  font-style: italic;
  font-weight: 700;
}

.demo-image {
  display: block;
  width: 100%;
  margin-top: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.hero-screenshot-wrapper {
  position: relative;
  display: inline-block;
}

.hero-screenshot-wrapper::before {
  position: absolute;
  z-index: -1;
  inset: -40px;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.06) 0%,
    rgba(255, 255, 255, 0) 70%
  );
  filter: blur(40px);
  content: "";
}

.marketing-hero-image,
.marketing-workflow-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  background: #0f141a;
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.35),
    0 4px 12px rgba(0, 0, 0, 0.25);
}

.marketing-hero-image {
  max-width: 640px;
}

.marketing-workflow-image {
  max-width: 840px;
  margin: 2rem auto 0;
}

.placeholder-image {
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(99, 161, 255, 0.1), rgba(142, 230, 181, 0.06)),
    rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 800;
  text-align: center;
}

.demo-panel {
  display: grid;
  align-items: end;
  gap: 1.5rem;
  margin-bottom: 5rem;
  padding: 2rem;
  border: 1px solid rgba(99, 161, 255, 0.22);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(99, 161, 255, 0.12), rgba(142, 230, 181, 0.08)),
    var(--surface);
}

.demo-panel p:not(.eyebrow) {
  max-width: 46rem;
  margin: 1rem 0 0;
  color: var(--soft);
  font-size: 1.04rem;
}

.demo-panel-action {
  display: grid;
  justify-items: start;
  gap: 0.75rem;
}

.demo-panel-action p {
  margin: 0;
  color: var(--soft);
  font-size: 1.02rem;
  font-style: italic;
  font-weight: 700;
}

.demo-trust {
  color: var(--muted);
  font-size: 0.9rem;
}

.pricing-link {
  color: var(--accent);
  font-size: 0.95rem;
}

.pricing-link:hover {
  color: var(--accent-strong);
}

.hvac-work {
  margin-top: 5.5rem;
  margin-bottom: 4.5rem;
}

.hvac-work h2 {
  max-width: 52.5rem;
  margin-right: auto;
  margin-bottom: 0.8rem;
  margin-left: auto;
  color: var(--text);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.12;
}

.hvac-work p {
  max-width: 52.5rem;
  margin-right: auto;
  margin-bottom: 1.25rem;
  margin-left: auto;
  color: var(--soft);
  font-size: clamp(1.02rem, 1.45vw, 1.12rem);
}

.hvac-work ul {
  display: grid;
  gap: 0.65rem;
  max-width: 52.5rem;
  margin: 0 auto;
  padding: 0;
  color: var(--soft);
  font-size: clamp(1rem, 1.35vw, 1.08rem);
  list-style: none;
}

.hvac-work li {
  position: relative;
  padding-left: 1.35rem;
}

.hvac-work li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 0.32rem;
  height: 0.32rem;
  border-radius: 999px;
  background: var(--muted);
  content: "";
}
.hvac-work a {
  color: var(--accent);
  font-weight: 700;
}

.hvac-work a:hover {
  color: var(--accent-strong);
}

.site-footer {
  background: #0f141a;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.footer-inner {
  padding-top: 3.5rem;
  padding-bottom: 3.25rem;
  font-size: 0.95rem;
}

.footer-columns {
  display: grid;
  gap: 2rem;
}

.footer-column {
  display: grid;
  gap: 0.62rem;
  align-content: start;
}

.footer-column h2 {
  margin: 0 0 0.25rem;
  color: var(--soft);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.footer-column a {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.35;
}

.footer-column a:hover {
  color: var(--text);
}

.footer-bottom {
  margin: 1.5rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.92rem;
}

.sticky-cta {
  display: none;
}

@media (min-width: 760px) {
  .hero-grid {
    grid-template-columns: minmax(0, 0.76fr) minmax(0, 1.24fr);
    gap: 4rem;
  }

  .value-strip-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .demo-panel {
    grid-template-columns: 1fr auto;
  }

  .footer-columns {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 759px) {
  body.sticky-cta-visible {
    padding-bottom: 84px;
  }

  .nav {
    align-items: flex-start;
    padding: 0.9rem 0;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    gap: 0.8rem 1rem;
  }

  .nav-demo-link {
    display: none;
  }

  .feature-menu-panel {
    left: 0;
    right: auto;
  }

  .hero {
    padding: 3rem 0 1.5rem;
    text-align: left;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-copy {
    max-width: 100%;
  }

  h1 {
    max-width: 100%;
    margin-right: 0;
    margin-bottom: 1.5rem;
    margin-left: 0;
    font-size: clamp(2.15rem, 10vw, 3rem);
    line-height: 1.04;
  }

  .lead {
    max-width: 100%;
    margin-right: 0;
    margin-bottom: 1.75rem;
    margin-left: 0;
    font-size: clamp(1.03rem, 4.4vw, 1.15rem);
    line-height: 1.48;
  }

  .hero-actions {
    justify-content: stretch;
    margin-bottom: 1rem;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 52px;
  }

  .hero-note {
    margin-right: 0;
    margin-left: 0;
    color: var(--muted);
    text-align: left;
  }

  .product-preview {
    width: min(90%, 420px);
    margin: 2rem auto 1.5rem;
    overflow: visible;
    border-radius: 14px;
  }

  .feature-row {
    padding: 2rem 0;
  }

  .hero-unit-mock {
    aspect-ratio: auto;
    min-height: 0;
    border-radius: 16px;
  }

  .hero-unit-stage {
    grid-template-columns: 1fr;
  }

  .unit-link {
    display: none;
  }

  .unit-card {
    min-height: auto;
  }

  .hero-workflow {
    grid-template-columns: 1fr;
  }

  .demo-panel {
    margin-right: 1.25rem;
    margin-left: 1.25rem;
  }

  .marketing-hero-image {
    max-width: 420px;
    margin: 0 auto;
    border-radius: 16px;
  }

  .marketing-workflow-image {
    max-width: 480px;
    border-radius: 16px;
  }

  .sticky-cta.is-visible {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 50;
    display: block;
    padding: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(11, 17, 23, 0.92);
    backdrop-filter: blur(12px);
  }

  .sticky-cta .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto;
  }
}