:root {
  --bg: #f4f7f6;
  --surface: #ffffff;
  --primary: #1f5f5b;
  --primary-dark: #163f3c;
  --accent: #4b8f7d;
  --text: #1e2a29;
  --muted: #5f6f6d;
  --border: #dce7e4;
  --shadow: 0 20px 40px rgba(25, 49, 46, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f8fcfb 0%, var(--bg) 100%);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(1120px, calc(100% - 1.25rem));
  margin: 0 auto;
}

.hero {
  padding: 3rem 0 3.25rem;
  background: linear-gradient(135deg, rgba(31, 95, 91, 0.98), rgba(75, 143, 125, 0.95));
  color: white;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(22, 63, 60, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: white;
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: 1.4rem;
  margin-left: auto;
  margin-right: 1.4rem;
}

.nav-menu a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-menu a:hover {
  color: white;
  border-color: rgba(255,255,255,0.7);
}

.nav-link {
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.16);
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.18);
}

.nav-link {
  color: white;
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.8rem;
  font-weight: 700;
  color: #c6e2da;
  margin-bottom: 0.7rem;
}

h1, h2, h3 {
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  margin: 0 0 1rem;
}

.lead {
  font-size: clamp(1rem, 1.8vw, 1.08rem);
  max-width: 680px;
  color: rgba(255,255,255,0.9);
}

.hero-actions, .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 0.9rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: white;
  color: var(--primary-dark);
  box-shadow: 0 10px 25px rgba(0,0,0,0.14);
}

.btn-secondary {
  background: #d8f0e8;
  color: var(--primary-dark);
}

.btn-outline {
  border: 1px solid rgba(255,255,255,0.4);
  color: white;
  background: rgba(255,255,255,0.08);
}

.hero-note {
  margin-top: 1rem;
  color: rgba(255,255,255,0.83);
  font-size: 0.95rem;
}

.hero-card {
  background: rgba(255,255,255,0.12);
  padding: 0.8rem;
  border-radius: 1.4rem;
  box-shadow: var(--shadow);
}

.hero-card img {
  border-radius: 1rem;
  height: 420px;
  object-fit: cover;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: -2rem;
  position: relative;
  z-index: 2;
}

.stats article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.stats strong {
  display: block;
  font-size: 1.4rem;
  color: var(--primary);
}

section {
  padding: 4rem 0;
  scroll-margin-top: 80px;
}

.section-heading {
  text-align: center;
  margin-bottom: 2rem;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.card, .step-grid article, .about-image, .cta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  box-shadow: var(--shadow);
}

.card {
  padding: 1.3rem;
}

.card h3 {
  margin-top: 0;
  color: var(--primary-dark);
}

.about {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.about ul {
  padding-left: 1.1rem;
  color: var(--muted);
}

.about-image img {
  border-radius: 1.2rem;
  height: 420px;
  object-fit: cover;
}

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

.step-grid article {
  padding: 1.4rem;
}

.step-grid span {
  display: inline-flex;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  background: rgba(75, 143, 125, 0.16);
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.7rem;
}

.cta {
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.2rem;
}

.footer {
  padding: 1.2rem 0 2rem;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.floating-actions {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  z-index: 60;
}

.fab {
  display: grid;
  place-items: center;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 999px;
  color: white;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 12px 24px rgba(0,0,0,0.22);
  transition: transform 0.2s ease;
}

.fab:hover {
  transform: translateY(-2px);
}

.fab-call {
  background: var(--primary);
  font-size: 1.35rem;
}

.fab-wa {
  background: #25d366;
}

.fab-tg {
  background: #29a9eb;
}

@media (max-width: 900px) {
  .hero-content,
  .about,
  .service-grid,
  .step-grid,
  .stats {
    grid-template-columns: 1fr 1fr;
  }

  .hero-content,
  .about {
    grid-template-columns: 1fr;
  }

  .cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .nav-menu {
    display: none;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .fab {
    width: 3rem;
    height: 3rem;
  }

  .service-grid,
  .step-grid,
  .stats {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-bottom: 2.5rem;
  }

  .nav {
    padding-bottom: 1.2rem;
  }

  .hero-content {
    gap: 1.4rem;
  }

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

  .btn {
    width: 100%;
  }

  .hero-card img,
  .about-image img {
    height: 260px;
  }

  section {
    padding: 2.8rem 0;
  }

  .stats article {
    text-align: left;
  }

  .section-heading h2 {
    font-size: 1.35rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}