:root {
  --accent: #00c3ff;
  --dark: #0f172a;
  --dark-2: #111827;
  --bg: #f6fbfa;
  --white: #ffffff;
  --muted: #94a3b8;
  --text-soft: #cbd5e1;
  --max: 1240px;
  --radius: 22px;
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
}

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

.container {
  max-width: var(--max);
  margin: auto;
  padding: 0 20px;
}

section {
  padding: 90px 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
}

h2 {
  font-size: clamp(32px, 4vw, 52px);
  margin-bottom: 18px;
}

p {
  margin-bottom: 16px;
}

.center {
  text-align: center;
}

.lead {
  max-width: 760px;
  margin: 0 auto 40px;
  color: var(--muted);
  font-size: 18px;
}

.btn {
  display: inline-block;
  padding: 16px 30px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 700;
  box-shadow: 0 16px 35px rgba(0, 195, 255, .28);
  transition: .25s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  align-items: center;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, .05);
}

.card h3 {
  margin-bottom: 12px;
}

.section-dark {
  background: linear-gradient(135deg, var(--dark), var(--dark-2));
  color: #fff;
}

/* HERO */

.hero {
  padding: 180px 0;
  color: #fff;
  background:
    linear-gradient(rgba(15, 23, 42, .72), rgba(15, 23, 42, .82)),
    url('/assets/images/solar-power-plant-01.webp') center/cover;
}

.hero h1 {
  font-size: clamp(42px, 7vw, 74px);
  max-width: 900px;
  margin-bottom: 18px;
}

.hero p {
  max-width: 780px;
  font-size: 21px;
  color: #e2e8f0;
  margin-bottom: 28px;
}

/* VISUAL */

.visual {
  min-height: 460px;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark), var(--dark-2));
}

.visual::before {
  content: "";
  position: absolute;
  inset: -100px;
  background: radial-gradient(circle, rgba(0, 195, 255, .35), transparent 55%);
}

.visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/hero_01.png') center/contain no-repeat;
  opacity: .35;
}

/* TRUST */

.metric {
  text-align: center;
  padding: 28px;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .05);
}

.metric strong {
  display: block;
  font-size: 42px;
  color: var(--accent);
  margin-bottom: 8px;
}

/* SERVICE */

.service {
  padding: 30px;
  border-radius: 22px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .08);
}

.service .icon {
  font-size: 34px;
  margin-bottom: 12px;
}

/* ADVANTAGES */

.check {
  padding: 26px;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 25px rgba(0, 0, 0, .05);
  font-weight: 600;
}

/* PROCESS */

.step {
  padding: 28px;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(0, 0, 0, .05);
}

.step span {
  display: block;
  font-size: 44px;
  font-weight: 800;
  color: #dbe3ec;
  margin-bottom: 8px;
}

/* CTA */

.cta p {
  color: var(--text-soft);
  max-width: 720px;
  margin: 0 auto 24px;
}

/* MOBILE */

@media (max-width: 992px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 140px 0;
  }

  .visual {
    min-height: 320px;
  }
}