:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #eef3f9;
  --text: #132238;
  --muted: #5a6b80;
  --primary: #1f6feb;
  --primary-dark: #1454b3;
  --border: #d7e1ee;
  --success: #0f9d68;

  --radius: 14px;
  --radius-sm: 10px;

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;

  --shadow-1: 0 8px 24px rgba(20, 40, 74, 0.08);
  --shadow-2: 0 16px 32px rgba(20, 40, 74, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

img,
svg {
  max-width: 100%;
}

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

.section {
  padding: var(--space-6) 0;
}

.section-soft {
  background: linear-gradient(180deg, #f8fbff 0%, #eef4fb 100%);
}

.section-head {
  margin-bottom: var(--space-5);
}

.eyebrow {
  margin: 0 0 var(--space-1);
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  margin-bottom: var(--space-3);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-bottom: var(--space-2);
}

h3 {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  margin-bottom: var(--space-2);
}

p {
  margin: 0 0 var(--space-3);
  color: var(--muted);
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  background: #fff;
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  z-index: 1000;
}

.skip-link:focus {
  left: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  backdrop-filter: blur(8px);
  background: rgba(244, 247, 251, 0.85);
  border-bottom: 1px solid rgba(215, 225, 238, 0.8);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: var(--space-3);
}

.brand {
  font-weight: 800;
  text-decoration: none;
  font-size: 1.25rem;
  color: var(--text);
}

.brand span {
  color: var(--primary);
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 0 10px;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background: var(--text);
}

.nav-menu {
  position: absolute;
  left: 0;
  right: 0;
  top: 72px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--space-3);
  display: none;
  flex-direction: column;
  gap: var(--space-2);
}

.nav-menu.open {
  display: flex;
}

.nav-link {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.nav-link.active {
  color: var(--primary-dark);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  padding: 0.72rem 1.1rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  cursor: pointer;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-1);
}

.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary-dark);
}

.btn-outline:hover {
  background: #eaf2ff;
}

.btn-small {
  font-size: 0.9rem;
  padding: 0.55rem 0.85rem;
}

.btn-whatsapp {
  background: #25d366;
}

.btn-whatsapp:hover {
  background: #1da851;
}

.hero {
  padding-top: 2.2rem;
}

.hero-grid {
  display: grid;
  gap: var(--space-4);
}

.hero-copy .lead {
  font-size: 1.05rem;
  max-width: 60ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.product-mock {
  background: radial-gradient(circle at top right, #edf4ff, #ffffff 65%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: var(--shadow-1);
}

.mock-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.status {
  color: var(--primary-dark);
  font-size: 0.8rem;
  background: #eaf2ff;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
}

.product-mock ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.product-mock li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  background: #fff;
  color: var(--text);
}

.mock-note {
  margin-top: var(--space-2);
  font-size: 0.85rem;
}

.problem-solution-grid,
.steps-grid,
.features-grid,
.use-cases-grid,
.contact-grid,
.trust-grid {
  display: grid;
  gap: var(--space-3);
}

.panel,
.step-card,
.feature-card,
.use-card,
.pilot-box,
.contact-form,
.faq-list details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}

.panel,
.step-card,
.feature-card,
.use-card,
.pilot-box,
.contact-form {
  padding: var(--space-4);
}

.panel-accent {
  background: linear-gradient(180deg, #f5f9ff 0%, #ffffff 100%);
}

.list {
  margin: 0;
  padding-left: 1rem;
  color: var(--muted);
}

.list li + li {
  margin-top: 0.6rem;
}

.icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #e9f2ff;
  margin-bottom: var(--space-2);
}

.features-grid {
  grid-template-columns: 1fr;
}

.feature-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: #e9f2ff;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  margin-bottom: 0.55rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  border: 1px solid #c8d9f1;
  background: #f1f7ff;
  color: #264a7a;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.85rem;
}

.pilot-box {
  background: linear-gradient(180deg, #eaf2ff 0%, #ffffff 100%);
}

.faq-list {
  display: grid;
  gap: var(--space-2);
}

.faq-list details {
  padding: var(--space-3);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
}

.contact-note {
  max-width: 50ch;
}

.contact-form {
  display: grid;
  gap: var(--space-2);
}

.contact-form label {
  font-weight: 600;
  color: var(--text);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #c8d4e4;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  padding: 0.7rem 0.8rem;
  font: inherit;
}

.form-error {
  min-height: 1.25rem;
  color: #c12222;
  margin: 0;
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #fff;
  padding: var(--space-4) 0;
}

.footer-grid {
  display: grid;
  gap: 0.35rem var(--space-3);
}

.footer-grid p {
  margin: 0;
  font-size: 0.92rem;
}

.footer-links {
  display: inline-flex;
  gap: var(--space-2);
}

.footer-links a {
  color: var(--primary-dark);
  text-decoration: none;
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 1200;
  min-width: 240px;
  max-width: min(90vw, 360px);
  background: var(--success);
  color: #fff;
  padding: 0.8rem 1rem;
  border-radius: 10px;
  box-shadow: var(--shadow-2);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(31, 111, 235, 0.35);
  outline-offset: 2px;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    border: 0;
    padding: 0;
    background: transparent;
  }

  .hero-grid {
    grid-template-columns: 1.2fr 0.9fr;
    align-items: center;
  }

  .problem-solution-grid,
  .contact-grid,
  .trust-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps-grid,
  .features-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .use-cases-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .section {
    padding: 4rem 0;
  }

  .navbar {
    min-height: 78px;
  }
}