:root {
  --efficity-green: #5BB04B;
  --efficity-green-dark: #3E8A30;
  --efficity-green-darker: #2A6620;
  --efficity-green-light: #EAF7E6;
  --efficity-yellow: #F2D900;
  --gray-900: #1A1A1A;
  --gray-700: #4A4A4A;
  --gray-500: #8A8A8A;
  --gray-300: #D4D4D4;
  --gray-200: #E8E8E8;
  --gray-100: #F5F5F5;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --max-w: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--efficity-green-dark); text-decoration: none; transition: color .2s; }
a:hover { color: var(--efficity-green-darker); }

/* === NAVBAR === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-logo img { height: 36px; width: auto; }
.nav-logo-text { font-weight: 700; color: var(--gray-900); font-size: 16px; line-height: 1.2; }
.nav-logo-text small { display: block; color: var(--gray-500); font-weight: 500; font-size: 12px; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  color: var(--gray-700);
  font-weight: 500;
  font-size: 15px;
  transition: color .2s;
}
.nav-links a:hover { color: var(--efficity-green-dark); }
.nav-links a.active { color: var(--efficity-green-dark); }

.nav-cta {
  background: var(--efficity-green);
  color: var(--white) !important;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  transition: all .2s;
}
.nav-cta:hover {
  background: var(--efficity-green-dark);
  transform: translateY(-1px);
}

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 24px; }

/* === HERO === */
.hero {
  background:
    radial-gradient(circle at 15% 25%, rgba(91, 176, 75, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(242, 217, 0, 0.06) 0%, transparent 40%),
    linear-gradient(135deg, #F8FBF9 0%, #E6F6EE 100%);
  padding: 80px 24px;
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 20px;
}
.hero h1 .accent { color: var(--efficity-green-dark); }
.hero p.lead {
  font-size: 18px;
  color: var(--gray-700);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-cta-row { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all .2s;
  border: 0;
}
.btn-primary {
  background: var(--efficity-green);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(91, 176, 75, 0.3);
}
.btn-primary:hover {
  background: var(--efficity-green-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(91, 176, 75, 0.4);
  color: var(--white);
}
.btn-secondary {
  background: var(--white);
  color: var(--efficity-green-dark);
  border: 2px solid var(--efficity-green);
}
.btn-secondary:hover {
  background: var(--efficity-green-light);
  color: var(--efficity-green-darker);
}

.hero-photo {
  position: relative;
}
.hero-photo img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.hero-badge {
  position: absolute;
  bottom: 24px;
  left: -20px;
  background: var(--white);
  padding: 14px 20px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-badge .dot {
  width: 10px;
  height: 10px;
  background: var(--efficity-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* === SECTIONS === */
.section {
  padding: 80px 24px;
}
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.2;
}
.section-subtitle {
  text-align: center;
  font-size: 17px;
  color: var(--gray-700);
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-alt { background: var(--gray-100); }

/* === PILIERS / FEATURES === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature {
  background: var(--white);
  padding: 32px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform .2s, box-shadow .2s;
}
.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--efficity-green-light);
  color: var(--efficity-green-dark);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.feature h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature p {
  color: var(--gray-700);
  font-size: 15px;
}

/* === PROCESS / STEPS === */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.step {
  text-align: center;
  padding: 24px;
}
.step-num {
  width: 56px;
  height: 56px;
  background: var(--efficity-green);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 22px;
  margin: 0 auto 20px;
  box-shadow: 0 4px 12px rgba(91, 176, 75, 0.3);
}
.step h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step p {
  color: var(--gray-700);
  font-size: 14px;
}

/* === STATS === */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--white);
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
}
.stat { text-align: center; }
.stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--efficity-green-dark);
  line-height: 1;
}
.stat-label {
  font-size: 14px;
  color: var(--gray-700);
  margin-top: 8px;
}

/* === CTA SECTION === */
.cta-section {
  background: linear-gradient(160deg, var(--efficity-green) 0%, var(--efficity-green-dark) 100%);
  color: var(--white);
  padding: 80px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before, .cta-section::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.cta-section::before {
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(242, 217, 0, 0.2) 0%, transparent 70%);
}
.cta-section::after {
  bottom: -120px;
  left: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
}
.cta-section .section-inner { position: relative; z-index: 1; }
.cta-section h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 17px;
  opacity: 0.95;
  max-width: 560px;
  margin: 0 auto 32px;
}
.cta-section .btn-primary {
  background: var(--efficity-yellow);
  color: var(--gray-900);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.cta-section .btn-primary:hover {
  background: #FFE400;
  transform: translateY(-2px);
}

/* === FOOTER === */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 56px 24px 32px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand img { height: 32px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; opacity: 0.7; }
.footer h4 {
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.footer ul { list-style: none; }
.footer li { margin-bottom: 8px; }
.footer a { color: var(--gray-300); font-size: 14px; }
.footer a:hover { color: var(--white); }
.footer-bottom {
  max-width: var(--max-w);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid #333;
  text-align: center;
  font-size: 13px;
  opacity: 0.6;
}

/* === GENERIC PAGE === */
.page-header {
  background: linear-gradient(135deg, #F8FBF9 0%, #E6F6EE 100%);
  padding: 60px 24px 40px;
  text-align: center;
}
.page-header h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 12px;
}
.page-header p {
  color: var(--gray-700);
  max-width: 640px;
  margin: 0 auto;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.content-card {
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}
.content-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--efficity-green-dark);
}
.content-card p { color: var(--gray-700); font-size: 15px; margin-bottom: 12px; }
.content-card ul { padding-left: 20px; color: var(--gray-700); font-size: 15px; }
.content-card li { margin-bottom: 8px; }

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-photo { order: -1; max-width: 400px; margin: 0 auto; }
  .features-grid, .steps { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .content-grid { grid-template-columns: 1fr; }

  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 0;
    border-bottom: 1px solid var(--gray-200);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: all .2s;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a {
    padding: 12px 8px;
    border-bottom: 1px solid var(--gray-100);
  }
  .nav-cta { text-align: center; margin-top: 8px; }
}
@media (max-width: 600px) {
  .stats { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .section { padding: 56px 24px; }
  .hero { padding: 56px 24px; }
}