:root {
  --bg: #0c1014;
  --bg-elev: #12181e;
  --bg-card: #181f26;
  --ink: #eef4f7;
  --muted: #9aadb8;
  --line: rgba(238, 244, 247, 0.12);
  --ember: #d06a32;
  --ember-bright: #e8894a;
  --ice: #7ec8e3;
  --ice-bright: #b7e7f5;
  --gold: #d4a574;
  --cream: #f7efe6;
  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Outfit", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button,
input,
select,
textarea {
  font-family: inherit;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 80;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.05rem 4.5vw;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(12, 16, 20, 0.88);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}

.split-glow {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 0% 20%, rgba(126, 200, 227, 0.12), transparent 42%),
    radial-gradient(ellipse at 100% 80%, rgba(208, 106, 50, 0.14), transparent 46%);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.logo-mark {
  width: 28px;
  height: 28px;
  color: var(--ember-bright);
}

.logo-text {
  font-family: var(--serif);
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  line-height: 1;
}

.logo-text span {
  display: block;
  font-family: var(--sans);
  font-size: 0.58rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.18rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.7rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-cta {
  color: var(--bg) !important;
  background: var(--ember);
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  font-weight: 500;
}

.nav-cta:hover {
  background: var(--ember-bright);
}

.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  background: none;
  border: 0;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 7px;
}

.menu-btn span {
  display: block;
  height: 1.5px;
  background: var(--ink);
  transition: width 0.2s ease, transform 0.2s ease;
}

.menu-btn span:first-child { width: 22px; }
.menu-btn span:last-child { width: 16px; }

.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: end;
  padding: 8.8rem 4.5vw 4.8rem;
  position: relative;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.orb {
  position: absolute;
  filter: blur(10px);
  animation: pulse 9s ease-in-out infinite;
}

.ice-orb {
  width: 42vw;
  height: 42vw;
  left: -12vw;
  top: -8vh;
  background: radial-gradient(circle, rgba(126, 200, 227, 0.32), rgba(126, 200, 227, 0.06) 46%, transparent 70%);
}

.fire-orb {
  width: 52vw;
  height: 52vw;
  right: -10vw;
  bottom: -16vw;
  background: radial-gradient(circle, rgba(208, 106, 50, 0.38), rgba(208, 106, 50, 0.08) 42%, transparent 70%);
  animation-delay: -4s;
}

.fault-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 48%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--ice) 30%, var(--ember) 70%, transparent);
  opacity: 0.35;
}

.floor-grid {
  position: absolute;
  inset: auto 0 0;
  width: 100%;
  height: 55%;
  opacity: 0.85;
}

.hero-copy,
.hero-panel {
  position: relative;
  z-index: 1;
}

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.tag {
  letter-spacing: 0.16em;
  font-size: 0.62rem;
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  border: 1px solid;
}

.tag.ice {
  color: var(--ice-bright);
  border-color: rgba(126, 200, 227, 0.45);
  background: rgba(126, 200, 227, 0.1);
}

.tag.fire {
  color: var(--ember-bright);
  border-color: rgba(208, 106, 50, 0.5);
  background: rgba(208, 106, 50, 0.12);
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.7rem, 5.6vw, 5.3rem);
  max-width: 13ch;
}

h2 {
  font-size: clamp(2rem, 3.5vw, 3.35rem);
  max-width: 18ch;
}

.lede {
  margin-top: 1.45rem;
  max-width: 44ch;
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: 2.1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.88rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn-primary {
  background: var(--ember);
  color: var(--cream);
}

.btn-primary:hover {
  background: var(--ember-bright);
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--ember);
  color: var(--gold);
}

.btn-fire {
  background: var(--ember);
  color: var(--cream);
}

.btn-fire:hover {
  background: var(--ember-bright);
  transform: translateY(-1px);
}

.btn-ice {
  border-color: rgba(126, 200, 227, 0.4);
  color: var(--ice-bright);
  background: rgba(126, 200, 227, 0.08);
}

.btn-ice:hover {
  border-color: var(--ice);
  background: rgba(126, 200, 227, 0.16);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 3.3rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  max-width: 38rem;
}

.hero-stats dt {
  font-family: var(--serif);
  font-size: 2.05rem;
  color: var(--gold);
}

.hero-stats dd {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

.hero-panel {
  background: linear-gradient(180deg, rgba(24, 32, 40, 0.88), rgba(12, 16, 20, 0.76));
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  padding: 1.25rem;
  backdrop-filter: blur(12px);
}

.panel-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tab {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.tab.is-on.is-ice {
  color: #0c1014;
  background: var(--ice);
  border-color: var(--ice);
}

.tab.is-on.is-fire {
  color: var(--cream);
  background: var(--ember);
  border-color: var(--ember);
}

.panel-kicker {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.floor-viz {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.1fr;
  grid-template-rows: 1.25fr 0.9fr;
  gap: 8px;
  height: 290px;
}

.tile {
  border-radius: 9px;
  background: linear-gradient(160deg, #1b2830, #10161b);
  position: relative;
  overflow: hidden;
}

.tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 80%, rgba(126, 200, 227, 0.55), transparent 62%);
  animation: glow 5.5s ease-in-out infinite;
}

.floor-viz.fire-mode .tile {
  background: linear-gradient(160deg, #3d281c, #18110e);
}

.floor-viz.fire-mode .tile::after {
  background: radial-gradient(circle at 50% 80%, rgba(232, 137, 74, 0.58), transparent 62%);
}

.t1 { grid-column: 1 / 3; }
.t2::after { animation-delay: 0.7s; }
.t3 { grid-column: 1; }
.t4 { grid-column: 2 / 4; }
.t4::after { animation-delay: 1.3s; }
.t5::after { animation-delay: 1.9s; }
.t6::after { animation-delay: 0.4s; }

.panel-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 0.95rem 0;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.marquee-track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: scroll 28s linear infinite;
}

.intro,
.systems,
.how,
.benefits,
.projects,
.process,
.faq,
.contact,
.dual {
  padding: 6.6rem 4.5vw;
}

.ice-word { color: var(--ice); }
.fire-word { color: var(--ember-bright); }

.dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.climate {
  border-radius: 1.2rem;
  padding: 2rem 1.7rem;
  border: 1px solid var(--line);
  min-height: 320px;
}

.ice-card {
  background: linear-gradient(180deg, #152229, #10161b);
}

.fire-card {
  background: linear-gradient(180deg, #2d2018, #16110e);
}

.climate-label {
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.ice-card .climate-label { color: var(--ice); }
.fire-card .climate-label { color: var(--ember-bright); }

.climate h3 {
  font-size: 2rem;
  margin: 0 0 0.8rem;
}

.climate p,
.climate li {
  color: var(--muted);
}

.climate ul {
  margin: 1.2rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.35rem;
}

.system-card.ice-tone {
  background: linear-gradient(180deg, #152229, #12181e);
}

.system-card.fire-tone {
  background: linear-gradient(180deg, #241911, #1c1612);
}

.system-card.featured {
  background: linear-gradient(180deg, #2d2018, #1a140f);
}

.contact-facts a,
.footer-cols a {
  color: inherit;
}

.contact-facts a:hover,
.footer-cols a:hover {
  color: var(--ice-bright);
}

.section-head {
  margin-bottom: 2.8rem;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 3.2rem;
}

.intro-lead {
  font-family: var(--serif);
  font-size: 1.58rem;
  line-height: 1.38;
  color: #ece1d4;
}

.intro-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

.intro-points li {
  padding-top: 1.15rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

.intro-points strong {
  display: block;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 0.28rem;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.system-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  padding: 1.55rem 1.45rem 1.4rem;
  min-height: 286px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.system-card:hover {
  border-color: rgba(208, 106, 50, 0.5);
  transform: translateY(-3px);
}

.card-index {
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--ember-bright);
  margin-bottom: 1.15rem;
}

.system-card h3 {
  font-size: 1.52rem;
  margin: 0 0 0.7rem;
}

.system-card p,
.system-card li {
  color: var(--muted);
  font-size: 0.92rem;
}

.system-card ul {
  margin: 1.05rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.32rem;
}

.how {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  background: linear-gradient(90deg, #10181e, #1c1612);
}

.how-copy > p {
  color: var(--muted);
  max-width: 48ch;
}

.steps {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

.steps li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.75rem;
}

.steps span {
  font-family: var(--serif);
  color: var(--ember-bright);
  font-size: 1.1rem;
}

.steps h3 {
  font-size: 1.25rem;
  margin: 0 0 0.28rem;
}

.steps p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

.cross-section {
  position: relative;
  border-radius: 1.2rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #0e0b09;
  padding: 1.5rem 1.2rem 2.4rem;
}

.layer {
  height: 44px;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
  border-radius: 6px;
}

.finish { background: #4a3728; }
.screed {
  background: linear-gradient(90deg, #7a4a28, #d06a32, #7a4a28);
  color: #1a120e;
}
.insulation { background: #2a221b; }
.slab { background: #1a1613; }

.pipes {
  display: flex;
  justify-content: space-around;
  margin: -8px 0 8px;
}

.pipes i {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #f0c48a, #d06a32);
  box-shadow: 0 0 12px rgba(232, 137, 74, 0.55);
}

.heat-rise {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(208, 106, 50, 0.2), transparent 55%);
  pointer-events: none;
  animation: rise 6s ease-in-out infinite;
}

.caption {
  margin-top: 0.9rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.benefit-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.benefit-row article {
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.benefit-row h3 {
  font-size: 1.4rem;
  margin: 0 0 0.55rem;
}

.benefit-row p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

.project-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1rem;
}

.project {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  overflow: hidden;
}

.project.large {
  grid-row: 1 / 3;
}

.project-visual {
  height: 180px;
  position: relative;
}

.project.large .project-visual {
  height: 360px;
}

.v1 { background: linear-gradient(160deg, #1a3a48, #1c120c 48%, #e8894a 140%); }
.v2 { background: linear-gradient(120deg, #152229, #8a4a28); }
.v3 { background: linear-gradient(200deg, #10181e, #4a3020 70%, #7ec8e3); }

.project-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 28px, rgba(255, 255, 255, 0.035) 28px 29px);
}

.project-info {
  padding: 1.3rem 1.4rem 1.5rem;
}

.project-info p:first-child {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 0.4rem;
}

.project-info h3 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
}

.project-info p {
  color: var(--muted);
  font-size: 0.92rem;
}

.process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}

.process-list li {
  counter-increment: step;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.process-list li::before {
  content: "0" counter(step);
  display: block;
  color: var(--ember-bright);
  font-family: var(--serif);
  margin-bottom: 0.8rem;
}

.process-list h3 {
  font-size: 1.4rem;
  margin: 0 0 0.5rem;
}

.process-list p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

.quote {
  padding: 5.2rem 4.5vw;
  background: linear-gradient(90deg, #10181e 0%, #14100e 50%, #1c140f 100%);
  text-align: center;
}

.quote p {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  font-style: italic;
  max-width: 22ch;
  margin: 0 auto 1.2rem;
  line-height: 1.25;
}

.quote footer {
  color: var(--muted);
  font-size: 0.88rem;
}

.faq-list {
  max-width: 780px;
  display: grid;
  gap: 0.6rem;
}

details {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 1rem 1.2rem;
  background: var(--bg-elev);
}

summary {
  cursor: pointer;
  font-weight: 500;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

details p {
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  background: var(--bg-elev);
}

.contact-copy > p {
  color: var(--muted);
  max-width: 46ch;
}

.contact-facts {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
  color: var(--muted);
}

.contact-facts span {
  display: block;
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  padding: 1.5rem;
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.contact-form .full,
.contact-form button,
.form-status {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  background: var(--bg-card);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 0.75rem 0.8rem;
  border-radius: 0.5rem;
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--ember);
}

.form-status {
  min-height: 1.2rem;
  font-size: 0.88rem;
  color: var(--gold);
  margin: 0;
}

.footer {
  padding: 3.5rem 4.5vw 2rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 2rem;
}

.footer-brand p {
  color: var(--muted);
  margin-top: 0.7rem;
  max-width: 36ch;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-cols h4 {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 0.5rem;
}

.footer-cols p {
  margin: 0;
}

.legal {
  font-size: 0.78rem;
  color: #7d7166;
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
  margin: 0;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: 0.85; }
}

@keyframes glow {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.92; }
}

@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes rise {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.8; }
}

@media (max-width: 980px) {
  .hero,
  .intro-grid,
  .how,
  .contact,
  .dual-grid {
    grid-template-columns: 1fr;
  }

  .system-grid,
  .benefit-row,
  .process-list {
    grid-template-columns: 1fr 1fr;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .project.large {
    grid-row: auto;
  }

  .project.large .project-visual {
    height: 220px;
  }

  .hero-panel {
    max-width: 440px;
  }

  .menu-btn {
    display: flex;
  }

  .nav-links {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(78vw, 320px);
    background: #10161b;
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem 1.6rem 2rem;
    gap: 1.2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    border-left: 1px solid var(--line);
  }

  .nav-links.open {
    transform: translateX(0);
  }
}

@media (max-width: 640px) {
  .system-grid,
  .benefit-row,
  .process-list,
  .contact-form,
  .hero-stats,
  .footer-cols {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 6.6rem;
  }
}