:root {
  --green:       #2e7d32;
  --green-light: #43a047;
  --green-pale:  #e8f5e9;
  --green-mid:   #1b5e20;
  --dark:        #1a1a1a;
  --mid:         #555;
  --light:       #f8f9fa;
  --border:      #e0e0e0;
  --white:       #fff;
  --accent:      #2e7d32;
}

.section-label { color: var(--green); }
.social-links { margin-top: 8px; }

/* ---- Nav ---- */
.nav-left { display: flex; align-items: center; gap: 24px; }
.nav-back {
  font-size: 13px; font-weight: 600; color: var(--mid);
  text-decoration: none;
  display: flex; align-items: center; gap: 6px;
  transition: color .2s;
}
.nav-back:hover { color: var(--green); }
.nav-logo img { height: 36px; display: block; }
.nav-brand-logo img { height: 28px; width: auto; display: block; }
.nav-sep { width: 1px; height: 24px; background: var(--border); }
.nav-cta {
  background: var(--green); color: var(--white);
  padding: 10px 24px; border-radius: 8px;
  font-size: 14px; font-weight: 600;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .2s;
}
.nav-cta:hover { background: var(--green-light); }

/* ---- Hero ---- */
.hero {
  padding: 100px 48px 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--green-pale) 0%, var(--white) 100%);
}
.hero-badge {
  display: inline-block;
  background: var(--green-pale);
  border: 1px solid #a5d6a7;
  color: var(--green);
  font-size: 13px; font-weight: 600;
  padding: 4px 14px; border-radius: 99px;
  margin-bottom: 24px;
}
.hero-brand-logo {
  height: auto; max-height: 80px; max-width: 100%; width: auto;
  object-fit: contain;
  margin: 0 auto 32px;
  display: block;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800; line-height: 1.15;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--green); }
.hero p {
  font-size: 1.1rem; color: var(--mid);
  max-width: 560px; margin: 0 auto 40px;
}
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---- Buttons ---- */
.btn-primary {
  background: var(--green); color: var(--white);
  padding: 14px 32px; border-radius: 10px;
  font-size: 15px; font-weight: 700;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background .2s, transform .15s;
}
.btn-primary:hover { background: var(--green-light); transform: translateY(-1px); }
.btn-secondary {
  background: transparent; color: var(--green);
  padding: 14px 32px; border-radius: 10px;
  border: 2px solid var(--green);
  font-size: 15px; font-weight: 700;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background .2s, transform .15s;
}
.btn-secondary:hover { background: var(--green-pale); transform: translateY(-1px); }

/* ---- Categories ---- */
.categories { background: var(--light); }
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.cat-card {
  background: var(--white);
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  text-align: center;
  transition: box-shadow .2s, transform .2s;
}
.cat-card:hover { box-shadow: 0 8px 32px rgba(46,125,50,.12); transform: translateY(-3px); }
.cat-card-img { width: 100%; height: 180px; object-fit: contain; background: var(--light); display: block; }
.cat-icon { font-size: 2.5rem; padding: 32px 0 14px; }
.cat-card-body { padding: 20px 24px 28px; }
.cat-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.cat-card p { color: var(--mid); font-size: 0.88rem; }
.cat-price { color: var(--green); font-weight: 700; font-size: 0.95rem; margin-top: 12px; }

/* ---- Why GreenLine ---- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.why-card {
  background: var(--green-pale);
  border-radius: 14px;
  padding: 28px 22px;
  border: 1px solid #a5d6a7;
}
.why-icon { font-size: 1.8rem; margin-bottom: 14px; }
.why-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.why-card p { color: var(--mid); font-size: 0.88rem; }

/* ---- About ---- */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text p { color: var(--mid); margin-bottom: 16px; line-height: 1.75; }
.about-text p:last-child { margin-bottom: 0; }
.about-visual {
  background: var(--green-pale);
  border-radius: 20px;
  padding: 56px 40px;
  text-align: center;
  border: 1px solid #a5d6a7;
}
.about-visual .big-icon { font-size: 5rem; display: block; margin-bottom: 16px; }
.about-visual p { font-size: 1.1rem; font-weight: 600; color: var(--green); }
.about-visual--photo p { color: #fff; }
.about-visual--photo {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 40px rgba(46,125,50,.3);
}
.about-visual--photo img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  object-position: center center;
  display: block;
  border-radius: 20px 20px 0 0;
  transition: transform .4s ease;
}
.about-visual--photo:hover img { transform: scale(1.05); }
.about-visual--photo p {
  padding: 18px 24px;
  background: linear-gradient(135deg, #1b5e20, #2e7d32);
  border-radius: 0 0 20px 20px;
  margin: 0;
}
@media (max-width: 480px) {
  .about-visual--photo img { height: 220px; }
}

/* ---- CTA Banner ---- */
.cta-banner {
  background: var(--green); color: var(--white);
  text-align: center;
}
.cta-banner h2 { color: var(--white); }
.cta-banner .section-label { color: #a5d6a7; }
.cta-banner .section-sub { color: rgba(255,255,255,.8); max-width: 480px; margin: 0 auto 40px; }
.cta-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-white {
  background: var(--white); color: var(--green);
  padding: 14px 32px; border-radius: 10px;
  font-size: 15px; font-weight: 700;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  transition: transform .15s;
}
.btn-white:hover { transform: translateY(-1px); }
.btn-wa-text {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 700; color: #25d366;
  text-decoration: none;
  padding: 13px 24px; border-radius: 10px;
  border: 2px solid #25d366;
  transition: background .2s, transform .15s;
}
.btn-wa-text:hover { background: rgba(37,211,102,.1); transform: translateY(-1px); }
.btn-wa-text--light { color: rgba(255,255,255,.9); border-color: rgba(255,255,255,.6); }
.btn-wa-text--light:hover { background: rgba(255,255,255,.1); }
.btn-outline-white {
  background: transparent; color: var(--white);
  padding: 14px 32px; border-radius: 10px;
  border: 2px solid rgba(255,255,255,.6);
  font-size: 15px; font-weight: 700;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  transition: border-color .2s, transform .15s;
}
.btn-outline-white:hover { border-color: #fff; transform: translateY(-1px); }

/* ---- Contact ---- */
.contact-section { background: var(--light); }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}
.contact-item { display: flex; flex-direction: column; gap: 6px; }
.contact-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--green); }
.contact-value { font-size: 1rem; color: var(--dark); }
.contact-value a { color: var(--dark); text-decoration: none; }
.contact-value a:hover { color: var(--green); }

/* ---- Floating WhatsApp ---- */
.wa-float-btn:hover { transform: scale(1.08); }

/* ---- Model cards ---- */
.model-card:hover { box-shadow: 0 8px 32px rgba(46,125,50,.12); }
.model-card-footer { color: var(--green); }

/* ---- Use cases ---- */
.use-cases { background: var(--light); }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .about-layout { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { order: -1; padding: 36px 24px; }
}

@media (max-width: 768px) {
  .nav-logo img { height: 28px; }
  .nav-cta { padding: 8px 16px; font-size: 13px; }

  .hero { padding: 64px 20px 52px; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .btn-primary, .btn-secondary, .btn-whatsapp { width: 100%; max-width: 320px; justify-content: center; }

  .cat-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-group { flex-direction: column; align-items: center; }
  .btn-white, .btn-outline-white { width: 100%; max-width: 320px; justify-content: center; }
}

@media (max-width: 480px) {
  .nav-back-label { display: none; }
  .nav-sep { display: none; }
  .nav-left { gap: 12px; }
  .cat-grid { grid-template-columns: 1fr; }
}