:root {
  --bg: #ffffff;
  --bg-alt: #f2f4f8;
  --text: #0f1720;
  --text-muted: #4a5566;
  --border: #e6eaf0;
  --accent: #ff6a1a;
  --accent-soft: #fff2ea;
  --radius: 14px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 32, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 32, 0.06);
  --container: 1200px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 20px;
}
.brand span { color: var(--accent); }
.nav-links {
  display: none;
  gap: 32px;
  font-size: 14px;
  color: var(--text-muted);
}
.nav-links a:hover { color: var(--text); }
@media (min-width: 860px) {
  .nav-links { display: flex; }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #e85d0f; }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--text); }
.btn .arrow { display: inline-block; transform: translateX(0); transition: transform .15s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* HERO */
.hero {
  padding: 64px 0 88px;
  background:
    radial-gradient(1000px 500px at 85% 30%, #eef2f8 0%, transparent 60%),
    #ffffff;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1.05fr 1fr; gap: 48px; }
  .hero { padding: 96px 0 120px; }
}
.hero h1 {
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  font-weight: 700;
}
.hero h1 .accent {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent);
  font-style: normal;
}
.hero p.lead {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 0 32px;
}
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background: #dbe3ef;
  opacity: .55;
  z-index: 0;
}
.hero-visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* SECTION */
section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 700;
}
.section-lead {
  color: var(--text-muted);
  max-width: 680px;
  font-size: 17px;
  margin: 0 0 48px;
}

/* WHY - numbered cards */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 760px) { .why-grid { grid-template-columns: repeat(3, 1fr); } }
.why-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.why-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 20px;
}
.why-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
  letter-spacing: -0.01em;
}
.why-card p { margin: 0; color: var(--text-muted); font-size: 15px; }

/* MODELS */
.models-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 760px) { .models-grid { grid-template-columns: repeat(3, 1fr); } }
.model-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.model-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.model-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #1a7f37;
  background: #e6f7ec;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.model-card img {
  width: 100%;
  height: 200px;
  object-fit: contain;
  background: #f7f7f8;
  border-radius: 12px;
  margin-bottom: 16px;
}
.model-card h3 {
  margin: 0 0 16px;
  font-size: 22px;
  letter-spacing: -0.01em;
}
.model-specs {
  display: grid;
  grid-template-columns: 1fr auto;
  row-gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.model-specs .val { color: var(--text); font-weight: 600; }
.models-cta { margin-top: 32px; text-align: center; }

/* APPLICATIONS */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (min-width: 760px) { .apps-grid { grid-template-columns: repeat(3, 1fr); } }
.app-tile {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 130px;
}
.app-tile svg { color: var(--accent); width: 28px; height: 28px; }
.app-tile h3 { margin: 0; font-size: 16px; letter-spacing: -0.01em; }
.app-tile p { margin: 0; font-size: 13px; color: var(--text-muted); }
.app-tile.has-photo { padding: 0; overflow: hidden; }
.app-tile.has-photo img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}
.app-tile.has-photo h3 { padding: 16px 20px 0; }
.app-tile.has-photo p { padding: 0 20px 20px; }

/* OFFER */
.offer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 760px) { .offer-grid { grid-template-columns: repeat(2, 1fr); } }
.offer-item {
  padding: 24px;
  border-left: 3px solid var(--accent);
  background: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}
.offer-item h3 { margin: 0 0 8px; font-size: 18px; }
.offer-item p { margin: 0; color: var(--text-muted); font-size: 15px; }

/* COBOT vs ROBOT */
.compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
@media (min-width: 860px) { .compare { grid-template-columns: 1.1fr 1fr; gap: 56px; } }
.compare p { color: var(--text-muted); font-size: 16px; }
.compare-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
.compare-list li {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 14px 20px;
  font-size: 14px;
  border-top: 1px solid var(--border);
}
.compare-list li:first-child { border-top: none; background: var(--bg-alt); font-weight: 600; color: var(--text); }
.compare-list li span:first-child { color: var(--text); }
.compare-list li span:last-child { color: var(--text-muted); }

/* CTA */
.cta {
  background: var(--text);
  color: #fff;
  border-radius: 20px;
  padding: 56px 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
  margin: 40px 0 0;
}
@media (min-width: 760px) { .cta { grid-template-columns: 1fr auto; padding: 64px; } }
.cta h2 { color: #fff; margin: 0 0 8px; }
.cta p { color: rgba(255,255,255,.72); margin: 0; max-width: 520px; }
.cta .btn-primary { background: var(--accent); }
.btn-whatsapp {
  background: #25D366;
  color: #fff;
}
.btn-whatsapp:hover { background: #1da851; }
.btn-phone {
  background: rgba(255,255,255,.1);
  color: #fff;
  border-color: rgba(255,255,255,.25);
}
.btn-phone:hover { background: rgba(255,255,255,.2); border-color: rgba(255,255,255,.4); }
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
}
.cta-actions .btn {
  justify-content: center;
  min-width: 220px;
}
.cta .placeholder {
  display: inline-block;
  padding: 12px 20px;
  border: 1px dashed rgba(255,255,255,.35);
  border-radius: 10px;
  color: rgba(255,255,255,.7);
  font-size: 14px;
}

/* FOOTER */
footer {
  padding: 40px 0 60px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}