:root {
  --bg: #06101b;
  --bg-deep: #02070d;
  --panel: rgba(255, 255, 255, 0.075);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --line: rgba(255, 255, 255, 0.12);
  --line-soft: rgba(255, 255, 255, 0.07);
  --text: #f5f8fb;
  --muted: #a8b4c1;
  --muted-2: #758392;
  --orange: #f7941d;
  --orange-2: #ffb04a;
  --blue: #0a2237;
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --shadow: 0 30px 100px rgba(0, 0, 0, 0.38);
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at 18% 8%, rgba(247, 148, 29, 0.12), transparent 26rem),
    radial-gradient(circle at 92% 18%, rgba(33, 144, 255, 0.13), transparent 32rem),
    linear-gradient(180deg, #07111d 0%, #02070d 52%, #06101b 100%);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

button {
  cursor: pointer;
}

::selection {
  color: #080d12;
  background: var(--orange-2);
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 90px 90px, 90px 90px;
  mask-image: linear-gradient(to bottom, #000, transparent 85%);
}

.cursor-glow {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247, 148, 29, 0.13), transparent 68%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 1;
  opacity: 0;
  transition: opacity .35s ease;
}

.scrollbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1000;
  background: rgba(255,255,255,.04);
}

.scrollbar span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--orange), var(--orange-2));
  box-shadow: 0 0 18px rgba(247,148,29,.65);
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: 118px 0;
}

.glass {
  background: linear-gradient(145deg, rgba(255,255,255,.10), rgba(255,255,255,.045));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  width: min(1180px, calc(100% - 32px));
  transform: translateX(-50%);
  z-index: 999;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 999px;
  background: rgba(4, 12, 20, .58);
  backdrop-filter: blur(22px);
  transition: transform .35s ease, background .35s ease, border-color .35s ease;
}

.site-header.is-scrolled {
  background: rgba(4, 12, 20, .82);
  border-color: rgba(255,255,255,.16);
}

.brand {
  width: 176px;
  padding-left: 6px;
}

.main-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 28px;
  color: rgba(255,255,255,.76);
  font-size: 13px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.main-nav a {
  position: relative;
  transition: color .25s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0;
  height: 1px;
  background: var(--orange);
  transition: width .25s ease;
}

.main-nav a:hover {
  color: #fff;
}

.main-nav a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.phone-link {
  font-weight: 700;
  font-size: 14px;
  color: #fff;
  white-space: nowrap;
}

.button {
  --shine-x: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 22px;
  border: 0;
  border-radius: 14px;
  color: #08111a;
  font-weight: 800;
  letter-spacing: .02em;
  background:
    radial-gradient(circle at var(--shine-x) 0%, rgba(255,255,255,.62), transparent 28px),
    linear-gradient(135deg, var(--orange), var(--orange-2));
  box-shadow: 0 18px 45px rgba(247, 148, 29, .24), inset 0 1px 0 rgba(255,255,255,.42);
  transition: transform .25s ease, box-shadow .25s ease;
}

.button::after {
  content: "→";
  font-size: 18px;
  line-height: 1;
  transition: transform .25s ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 55px rgba(247, 148, 29, .32), inset 0 1px 0 rgba(255,255,255,.48);
}

.button:hover::after {
  transform: translateX(4px);
}

.button-small {
  min-height: 42px;
  padding-inline: 18px;
  border-radius: 12px;
  font-size: 12px;
  text-transform: uppercase;
}

.button-ghost {
  color: #fff;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: none;
}

.button-ghost:hover {
  box-shadow: 0 18px 45px rgba(255,255,255,.06);
  background: rgba(255,255,255,.085);
}

.button.wide {
  width: 100%;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: transform .25s ease, opacity .25s ease;
}

body.menu-open .nav-toggle span:first-child {
  transform: translateY(4px) rotate(45deg);
}

body.menu-open .nav-toggle span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.hero {
  min-height: 100svh;
  padding: 150px 0 90px;
  display: flex;
  align-items: center;
  isolation: isolate;
}

.hero-bg,
.hero-bg > * {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.grid-lines {
  background:
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 120px 120px;
  mask-image: radial-gradient(circle at 62% 48%, #000, transparent 74%);
  opacity: .8;
  transform: perspective(900px) rotateX(55deg) translateY(18%);
}

.orb {
  border-radius: 50%;
  filter: blur(18px);
  opacity: .52;
  animation: floatOrb 10s ease-in-out infinite alternate;
}

.orb-one {
  inset: 12% auto auto 52%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(247,148,29,.34), transparent 68%);
}

.orb-two {
  inset: auto auto 8% 7%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(32,132,255,.22), transparent 70%);
  animation-delay: -2s;
}

@keyframes floatOrb {
  from { transform: translate3d(-14px, -8px, 0) scale(1); }
  to { transform: translate3d(22px, 18px, 0) scale(1.06); }
}

.hero-grid {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 60px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--orange-2);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
}

.hero-title,
.section-title {
  margin: 0;
  letter-spacing: -.06em;
  line-height: .88;
}

.hero-title {
  font-size: clamp(66px, 8.6vw, 126px);
  text-transform: uppercase;
}

.hero-title span {
  display: block;
}

.hero-title span:last-child,
.section-title strong {
  color: var(--orange);
  text-shadow: 0 0 38px rgba(247,148,29,.18);
}

.hero-lead,
.section-copy,
.section-subtitle {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
}

.hero-lead {
  max-width: 640px;
  margin: 26px 0 0;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-tags span {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255,255,255,.045);
}

.hero-tags strong {
  color: #fff;
}

.energy-visual {
  min-height: 570px;
}

.visual-frame {
  position: relative;
  width: min(100%, 720px);
  aspect-ratio: 1.24;
  margin-left: auto;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 42px;
  overflow: hidden;
  background:
    radial-gradient(circle at 56% 42%, rgba(247,148,29,.13), transparent 28%),
    radial-gradient(circle at 42% 58%, rgba(28, 132, 255, .18), transparent 38%),
    linear-gradient(145deg, rgba(255,255,255,.09), rgba(255,255,255,.035));
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.13);
}

.visual-frame::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    linear-gradient(90deg, transparent 0 47%, rgba(255,255,255,.08) 48% 49%, transparent 50% 100%),
    linear-gradient(0deg, transparent 0 47%, rgba(255,255,255,.06) 48% 49%, transparent 50% 100%);
  background-size: 88px 88px;
  transform: rotate(-12deg);
  opacity: .5;
}

.visual-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0 40%, rgba(255,255,255,.08) 49%, transparent 58% 100%);
  transform: translateX(-80%);
  animation: scan 6s ease-in-out infinite;
}

@keyframes scan {
  0%, 42% { transform: translateX(-85%); opacity: 0; }
  55% { opacity: 1; }
  100% { transform: translateX(85%); opacity: 0; }
}

.sun-core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 160px;
  height: 160px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,176,74,.88) 0 4%, rgba(247,148,29,.16) 5% 32%, transparent 65%);
  box-shadow: 0 0 65px rgba(247,148,29,.24);
  animation: pulseCore 2.8s ease-in-out infinite;
}

@keyframes pulseCore {
  0%, 100% { transform: translate(-50%, -50%) scale(.96); opacity: .74; }
  50% { transform: translate(-50%, -50%) scale(1.06); opacity: 1; }
}

.energy-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.flow {
  fill: none;
  stroke: url(#lineGradient);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 16 18;
  opacity: .72;
  animation: flowDash 1.4s linear infinite;
}

.flow-2 { animation-duration: 1.9s; opacity: .5; }
.flow-3 { animation-duration: 1.65s; }
.flow-4 { animation-duration: 2.2s; opacity: .42; }

@keyframes flowDash {
  to { stroke-dashoffset: -68; }
}

.node {
  position: absolute;
  z-index: 3;
  width: 150px;
  min-height: 116px;
  padding: 16px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(4, 12, 20, .62);
  box-shadow: 0 22px 60px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(18px);
  animation: nodeFloat 5s ease-in-out infinite alternate;
}

.node-pv { left: 8%; top: 15%; }
.node-storage { right: 8%; top: 15%; animation-delay: -.8s; }
.node-heat { left: 8%; bottom: 16%; animation-delay: -1.4s; }
.node-home { right: 8%; bottom: 16%; animation-delay: -2.2s; }

@keyframes nodeFloat {
  from { transform: translateY(-4px); }
  to { transform: translateY(8px); }
}

.node span,
.node strong,
.system-card span,
.system-card strong,
.system-card em {
  display: block;
}

.node span {
  color: #fff;
  font-weight: 800;
  margin-top: 12px;
}

.node strong {
  color: var(--orange-2);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-top: 5px;
}

.node-icon {
  width: 34px;
  height: 34px;
  position: relative;
}

.solar-icon::before,
.solar-icon::after,
.battery-icon::before,
.battery-icon::after,
.heat-icon::before,
.heat-icon::after,
.home-icon::before,
.home-icon::after {
  content: "";
  position: absolute;
  border-color: var(--orange-2);
}

.solar-icon::before {
  inset: 7px 1px 7px 1px;
  border: 2px solid var(--orange-2);
  transform: skewX(-15deg);
}

.solar-icon::after {
  left: 14px;
  top: 1px;
  width: 2px;
  height: 32px;
  background: var(--orange-2);
  box-shadow: -10px 13px 0 -1px var(--orange-2), 10px 13px 0 -1px var(--orange-2);
  opacity: .75;
}

.battery-icon::before {
  left: 3px;
  top: 8px;
  width: 24px;
  height: 18px;
  border: 2px solid var(--orange-2);
  border-radius: 4px;
}

.battery-icon::after {
  right: 1px;
  top: 14px;
  width: 4px;
  height: 7px;
  background: var(--orange-2);
  border-radius: 0 2px 2px 0;
}

.heat-icon::before {
  inset: 4px;
  border: 2px solid var(--orange-2);
  border-radius: 50%;
}

.heat-icon::after {
  left: 14px;
  top: 2px;
  width: 6px;
  height: 30px;
  border-radius: 12px;
  background: var(--orange-2);
  transform: rotate(45deg);
  opacity: .8;
}

.home-icon::before {
  left: 4px;
  top: 14px;
  width: 25px;
  height: 17px;
  border: 2px solid var(--orange-2);
  border-top: 0;
}

.home-icon::after {
  left: 5px;
  top: 6px;
  width: 22px;
  height: 22px;
  border-left: 2px solid var(--orange-2);
  border-top: 2px solid var(--orange-2);
  transform: rotate(45deg);
}

.system-card {
  position: absolute;
  z-index: 4;
  border-radius: 24px;
  padding: 18px;
}

.system-card-main {
  left: 50%;
  top: 50%;
  width: 210px;
  transform: translate(-50%, -50%);
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #38e68a;
  box-shadow: 0 0 18px rgba(56,230,138,.8);
  margin-bottom: 10px;
}

.system-card p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.system-card strong {
  font-size: 42px;
  line-height: 1;
  color: var(--orange-2);
}

.system-card em {
  font-style: normal;
  color: #fff;
  font-size: 13px;
  margin-top: 4px;
}

.mini-bars {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  align-items: end;
  height: 48px;
  margin-top: 14px;
}

.mini-bars span {
  border-radius: 9px 9px 0 0;
  background: linear-gradient(180deg, var(--orange-2), rgba(247,148,29,.15));
  animation: barMove 1.7s ease-in-out infinite alternate;
}

.mini-bars span:nth-child(1) { height: 20%; animation-delay: -.1s; }
.mini-bars span:nth-child(2) { height: 32%; animation-delay: -.2s; }
.mini-bars span:nth-child(3) { height: 48%; animation-delay: -.3s; }
.mini-bars span:nth-child(4) { height: 82%; animation-delay: -.4s; }
.mini-bars span:nth-child(5) { height: 74%; animation-delay: -.5s; }
.mini-bars span:nth-child(6) { height: 52%; animation-delay: -.6s; }
.mini-bars span:nth-child(7) { height: 28%; animation-delay: -.7s; }

@keyframes barMove {
  to { filter: brightness(1.24); transform: scaleY(.86); }
}

.system-card-side {
  right: 24px;
  top: 46%;
  width: 190px;
}

.system-card-side strong {
  color: #fff;
  font-size: 22px;
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 30px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--muted-2);
  font-size: 12px;
  letter-spacing: .15em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.scroll-hint span {
  width: 1px;
  height: 38px;
  background: linear-gradient(to bottom, var(--orange), transparent);
  animation: scrollLine 1.35s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(.45); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
}

.split-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 82px;
  align-items: start;
}

.split-grid.reverse {
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
}

.section-title {
  font-size: clamp(42px, 5.6vw, 82px);
}

.section-copy {
  margin: 0;
}

.section-copy p,
.section-copy + p {
  margin: 0 0 18px;
}

.section-head {
  margin-bottom: 46px;
}

.section-head.center {
  text-align: center;
  max-width: 830px;
}

.section-subtitle {
  max-width: 760px;
  margin: 22px auto 0;
}

.system-section {
  border-top: 1px solid var(--line-soft);
}

.system-flow {
  position: relative;
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.flow-card {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(255,255,255,.075), rgba(255,255,255,.032));
  position: relative;
  overflow: hidden;
}

.flow-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  transform: translateX(-100%);
  animation: cardEnergy 4s ease-in-out infinite;
}

.flow-card:nth-of-type(3)::after { animation-delay: .4s; }
.flow-card:nth-of-type(5)::after { animation-delay: .8s; }
.flow-card:nth-of-type(7)::after { animation-delay: 1.2s; }

@keyframes cardEnergy {
  0%, 28% { transform: translateX(-100%); opacity: 0; }
  48% { opacity: 1; }
  75%, 100% { transform: translateX(100%); opacity: 0; }
}

.flow-card span,
.why-card span,
.timeline-step span {
  color: var(--orange-2);
  font-weight: 900;
  letter-spacing: .1em;
  font-size: 12px;
}

.flow-card strong {
  display: block;
  margin-top: 42px;
  font-size: 24px;
}

.flow-card p,
.why-card p,
.timeline-step p,
.tech-card p,
.footer-grid p {
  color: var(--muted);
  line-height: 1.65;
}

.flow-arrow {
  display: none;
}

.offer-section,
.process-section,
.contact-section {
  background: linear-gradient(180deg, rgba(255,255,255,.018), transparent);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.tech-card {
  position: relative;
  min-height: 430px;
  padding: 30px;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,.12);
  background:
    radial-gradient(circle at 25% 15%, rgba(247,148,29,.12), transparent 34%),
    linear-gradient(145deg, rgba(255,255,255,.09), rgba(255,255,255,.03));
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform .2s ease, border-color .25s ease, background .25s ease;
}

.tech-card::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  background:
    linear-gradient(135deg, transparent 0 28%, rgba(247,148,29,.12) 29% 31%, transparent 32%),
    linear-gradient(0deg, rgba(247,148,29,.14), transparent);
  opacity: .7;
}

.card-shine {
  position: absolute;
  inset: -1px;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 20%), rgba(255,255,255,.18), transparent 32%);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}

.tech-card:hover {
  border-color: rgba(247,148,29,.5);
}

.tech-card:hover .card-shine {
  opacity: 1;
}

.card-code {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 66px;
  height: 66px;
  border-radius: 20px;
  color: var(--orange-2);
  border: 1px solid rgba(247,148,29,.36);
  background: rgba(247,148,29,.08);
  font-size: 24px;
  font-weight: 900;
}

.tech-card h3,
.why-card h3,
.timeline-step h3 {
  position: relative;
  margin: 28px 0 12px;
  font-size: 26px;
  letter-spacing: -.03em;
}

.tech-card p,
.tech-card ul {
  position: relative;
}

.tech-card ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  color: #d8e0e8;
}

.tech-card li {
  display: flex;
  gap: 10px;
  align-items: center;
}

.tech-card li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 16px rgba(247,148,29,.8);
}

.home-visual {
  position: relative;
  min-height: 520px;
  border-radius: 40px;
  border: 1px solid rgba(255,255,255,.11);
  background:
    radial-gradient(circle at 50% 50%, rgba(247,148,29,.13), transparent 22%),
    radial-gradient(circle at 50% 70%, rgba(35,135,255,.15), transparent 42%),
    linear-gradient(145deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  overflow: hidden;
  box-shadow: var(--shadow);
}

.house {
  position: absolute;
  left: 50%;
  top: 52%;
  width: 310px;
  transform: translate(-50%, -50%);
}

.roof {
  position: relative;
  height: 110px;
  background: linear-gradient(135deg, #16283a, #0a1521);
  clip-path: polygon(5% 100%, 50% 8%, 95% 100%);
  border: 1px solid rgba(255,255,255,.12);
}

.roof span {
  position: absolute;
  height: 2px;
  width: 56%;
  left: 22%;
  background: rgba(247,148,29,.55);
  transform: rotate(-22deg);
  box-shadow: 0 0 14px rgba(247,148,29,.4);
}

.roof span:nth-child(1) { top: 38px; }
.roof span:nth-child(2) { top: 58px; }
.roof span:nth-child(3) { top: 78px; }

.walls {
  position: relative;
  height: 164px;
  margin: 0 auto;
  width: 82%;
  background: linear-gradient(145deg, rgba(255,255,255,.10), rgba(255,255,255,.035));
  border: 1px solid rgba(255,255,255,.12);
  border-top: 0;
  border-radius: 0 0 24px 24px;
}

.window {
  position: absolute;
  top: 42px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: rgba(255,176,74,.23);
  border: 1px solid rgba(255,176,74,.52);
  box-shadow: inset 0 0 22px rgba(247,148,29,.18), 0 0 30px rgba(247,148,29,.12);
}

.window:nth-child(1) { left: 42px; }
.window:nth-child(2) { right: 42px; }

.door {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 50px;
  height: 84px;
  transform: translateX(-50%);
  border-radius: 14px 14px 0 0;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
}

.heat-unit {
  position: absolute;
  right: -46px;
  bottom: 10px;
  width: 80px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  color: var(--orange-2);
  font-weight: 900;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  box-shadow: 0 16px 50px rgba(0,0,0,.28);
}

.energy-pulse {
  position: absolute;
  left: 50%;
  top: 54%;
  width: 340px;
  height: 340px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(247,148,29,.32);
  animation: pulseRing 2.8s ease-out infinite;
}

.pulse-b {
  animation-delay: 1.35s;
}

@keyframes pulseRing {
  from { transform: translate(-50%, -50%) scale(.55); opacity: .85; }
  to { transform: translate(-50%, -50%) scale(1.45); opacity: 0; }
}

.metric {
  position: absolute;
  z-index: 3;
  padding: 15px 16px;
  border-radius: 18px;
}

.metric strong,
.metric span {
  display: block;
}

.metric strong {
  color: var(--orange-2);
  font-size: 18px;
}

.metric span {
  color: var(--muted);
  margin-top: 3px;
  font-size: 13px;
}

.metric-one { left: 28px; top: 42px; }
.metric-two { right: 28px; bottom: 42px; }

.benefits-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0;
}

.benefits-list span {
  padding: 11px 13px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  color: #dfe6ed;
  background: rgba(255,255,255,.045);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.why-card {
  min-height: 255px;
  padding: 24px;
  border-radius: 26px;
  border: 1px solid rgba(255,255,255,.11);
  background: rgba(255,255,255,.045);
  transition: transform .25s ease, background .25s ease, border-color .25s ease;
}

.why-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,.07);
  border-color: rgba(247,148,29,.42);
}

.process-layout {
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: 80px;
  align-items: start;
}

.process-sticky {
  position: sticky;
  top: 132px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 20px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 28px;
  bottom: 28px;
  width: 1px;
  background: linear-gradient(to bottom, var(--orange), rgba(255,255,255,.06));
}

.timeline-step {
  position: relative;
  padding: 26px 28px 26px 72px;
  border-radius: 26px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.044);
}

.timeline-step::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 34px;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 8px rgba(247,148,29,.1), 0 0 28px rgba(247,148,29,.55);
}

.timeline-step h3 {
  margin-top: 8px;
}

.calc-grid,
.contact-grid,
.faq-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 70px;
  align-items: start;
}

.configurator,
.contact-form {
  border-radius: 32px;
  padding: 30px;
}

.field-group,
.contact-form label {
  display: grid;
  gap: 9px;
  margin-bottom: 18px;
  color: #fff;
  font-weight: 700;
}

select,
input,
textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 16px;
  padding: 15px 16px;
  color: #fff;
  background: rgba(2, 7, 13, .72);
  outline: none;
  transition: border-color .25s ease, box-shadow .25s ease;
}

select:focus,
input:focus,
textarea:focus {
  border-color: rgba(247,148,29,.72);
  box-shadow: 0 0 0 4px rgba(247,148,29,.10);
}

textarea {
  resize: vertical;
}

input[type="range"] {
  accent-color: var(--orange);
  padding: 0;
  height: 34px;
  background: transparent;
}

.range-field output {
  justify-self: end;
  margin-top: -42px;
  margin-bottom: 4px;
  color: var(--orange-2);
  font-size: 26px;
  font-weight: 900;
}

.choice-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 24px 0;
}

.choice {
  min-height: 54px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 16px;
  color: #fff;
  background: rgba(255,255,255,.045);
  font-weight: 900;
  transition: background .25s ease, border-color .25s ease, transform .25s ease;
}

.choice:hover,
.choice.is-active {
  background: rgba(247,148,29,.15);
  border-color: rgba(247,148,29,.52);
  transform: translateY(-2px);
}

.toggle-row {
  display: grid;
  gap: 11px;
  color: #dfe6ed;
  margin-bottom: 22px;
}

.toggle-row label {
  display: flex;
  gap: 10px;
  align-items: center;
}

.toggle-row input {
  width: auto;
}

.result-box {
  padding: 20px;
  border-radius: 22px;
  background: rgba(247,148,29,.09);
  border: 1px solid rgba(247,148,29,.24);
  margin: 22px 0;
}

.result-box span {
  display: block;
  color: var(--orange-2);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: 11px;
  font-weight: 900;
}

.result-box strong {
  display: block;
  margin-top: 8px;
  font-size: 24px;
}

.result-box p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.58;
}

.accordion {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 22px;
  overflow: hidden;
  background: rgba(255,255,255,.045);
}

.faq-item button {
  width: 100%;
  min-height: 72px;
  padding: 22px 22px;
  border: 0;
  color: #fff;
  background: transparent;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  text-align: left;
  font-weight: 800;
}

.faq-item button span {
  width: 18px;
  height: 18px;
  position: relative;
  flex: 0 0 auto;
}

.faq-item button span::before,
.faq-item button span::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--orange);
  transform: translate(-50%, -50%);
  transition: transform .25s ease;
}

.faq-item button span::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.is-open button span::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .32s ease;
}

.faq-content p {
  overflow: hidden;
  margin: 0;
  padding: 0 22px;
  color: var(--muted);
  line-height: 1.68;
}

.faq-item.is-open .faq-content {
  grid-template-rows: 1fr;
}

.faq-item.is-open .faq-content p {
  padding-bottom: 22px;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 34px;
}

.contact-card {
  display: grid;
  gap: 8px;
  padding: 20px;
  border-radius: 22px;
  transition: transform .25s ease, border-color .25s ease;
}

.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgba(247,148,29,.44);
}

.contact-card span {
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .12em;
}

.contact-card strong {
  font-size: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-note {
  margin: 14px 0 0;
  color: var(--muted-2);
  font-size: 13px;
  line-height: 1.5;
}

.site-footer {
  position: relative;
  z-index: 2;
  padding: 70px 0 30px;
  border-top: 1px solid var(--line-soft);
  background: rgba(2, 7, 13, .7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr 1fr .8fr;
  gap: 42px;
}

.footer-logo {
  width: 190px;
  margin-bottom: 18px;
}

.footer-grid h3 {
  margin: 0 0 15px;
  color: #fff;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: .14em;
}

.footer-grid a,
.footer-grid p {
  display: block;
  margin: 0 0 10px;
  color: var(--muted);
}

.footer-grid a:hover {
  color: var(--orange-2);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
  color: var(--muted-2);
  font-size: 13px;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .75s ease, transform .75s ease;
  transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .brand {
    width: 160px;
  }

  .nav-toggle {
    display: flex;
    justify-self: end;
  }

  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    display: grid;
    gap: 0;
    padding: 12px;
    border-radius: 28px;
    border: 1px solid rgba(255,255,255,.13);
    background: rgba(4, 12, 20, .95);
    backdrop-filter: blur(24px);
    transform: translateY(-18px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
  }

  .main-nav a {
    padding: 17px 14px;
    border-bottom: 1px solid rgba(255,255,255,.07);
  }

  .main-nav a:last-child {
    border-bottom: 0;
  }

  body.menu-open .main-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .header-actions {
    display: none;
  }

  .hero-grid,
  .split-grid,
  .split-grid.reverse,
  .process-layout,
  .calc-grid,
  .contact-grid,
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .energy-visual {
    min-height: auto;
  }

  .visual-frame {
    margin: 0;
  }

  .system-flow,
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .tech-card {
    min-height: 340px;
  }

  .process-sticky {
    position: static;
  }

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

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .section {
    padding: 82px 0;
  }

  .site-header {
    top: 10px;
    width: calc(100% - 20px);
    padding: 11px 12px;
  }

  .brand {
    width: 146px;
  }

  .hero {
    min-height: auto;
    padding: 124px 0 72px;
  }

  .hero-title {
    font-size: clamp(54px, 18vw, 76px);
  }

  .hero-lead,
  .section-copy,
  .section-subtitle {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-tags span {
    width: 100%;
  }

  .visual-frame {
    border-radius: 28px;
    aspect-ratio: .85;
  }

  .node {
    width: 132px;
    min-height: 104px;
    padding: 13px;
  }

  .node span {
    font-size: 13px;
  }

  .node-pv { left: 5%; top: 8%; }
  .node-storage { right: 5%; top: 8%; }
  .node-heat { left: 5%; bottom: 10%; }
  .node-home { right: 5%; bottom: 10%; }

  .system-card-main {
    width: 178px;
  }

  .system-card-main strong {
    font-size: 34px;
  }

  .system-card-side {
    display: none;
  }

  .system-flow,
  .why-grid,
  .contact-cards,
  .form-row,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .flow-card {
    min-height: 170px;
  }

  .home-visual {
    min-height: 430px;
  }

  .house {
    width: 235px;
  }

  .metric {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    width: calc(100% - 36px);
    margin: 14px auto 0;
  }

  .metric-one {
    margin-top: 26px;
  }

  .metric-two {
    margin-top: 320px;
  }

  .choice-row {
    grid-template-columns: 1fr;
  }

  .configurator,
  .contact-form {
    padding: 20px;
    border-radius: 24px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}