:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-display: "Montserrat", sans-serif;
  --color-navy: #001e40;
  --color-vibrant-blue: #00a2fd;
  --color-emerald: #2cb163;
  --color-off-white: #f7fafc;
  --color-gray-border: #e0e3e5;
  --color-text-muted: #43474f;
  --color-white: #ffffff;
  --radius-hss: 1.5rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--color-off-white);
  color: var(--color-navy);
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.93);
  border-bottom: 1px solid var(--color-gray-border);
  backdrop-filter: blur(14px);
}

.site-nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  display: block;
  width: 220px;
  max-width: 100%;
  height: auto;
}

.brand-highlight {
  color: var(--color-vibrant-blue);
}

.desktop-only {
  display: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--color-navy);
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-vibrant-blue);
}

.menu-toggle {
  background: transparent;
  border: none;
  font-size: 1.4rem;
  color: var(--color-navy);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  border-top: 1px solid var(--color-gray-border);
}

.mobile-menu.visible {
  display: flex;
}

.mobile-link {
  color: var(--color-navy);
  font-size: 1rem;
  font-weight: 600;
}

.full-width {
  width: 100%;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  border: none;
  border-radius: var(--radius-hss);
  padding: 1rem 1.5rem;
  background: var(--color-vibrant-blue);
  color: var(--color-white);
  font-weight: 700;
  transition: filter 0.2s ease, transform 0.1s ease;
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(1px);
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: var(--radius-hss);
  padding: 1rem 1.5rem;
  background: transparent;
  color: var(--color-navy);
  font-weight: 700;
  transition: color 0.2s ease, gap 0.2s ease;
}

.secondary-button:hover {
  color: var(--color-vibrant-blue);
}

.section {
  padding: 4rem 1.5rem;
}

.section-container {
  max-width: 1120px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 3vw, 4.5rem);
  margin: 0;
  line-height: 1.03;
}

.label-bold {
  display: inline-block;
  margin-bottom: 1rem;
  font-weight: 800;
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-vibrant-blue);
}

.text-muted {
  color: var(--color-text-muted);
}

.hero-grid {
  display: grid;
  gap: 3rem;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-copy p {
  max-width: 720px;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-visual {
  position: relative;
}

.hero-visual-bg {
  position: absolute;
  inset: -1.75rem;
  background: rgba(0, 162, 253, 0.12);
  border-radius: 50%;
  filter: blur(40px);
  z-index: 0;
}

.hero-visual img {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-hss);
  box-shadow: 0 30px 80px rgba(0, 30, 64, 0.14);
}

.grid-2 {
  display: grid;
  gap: 2rem;
}

.feature-grid {
  display: grid;
  gap: 1.5rem;
}

.feature-card,
.problem-card,
.platform-card,
.lead-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius-hss);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
}

.feature-card {
  padding: 2rem;
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 162, 253, 0.14);
  color: var(--color-vibrant-blue);
  border-radius: 1rem;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.feature-card h3,
.problem-card h3,
.platform-card h3 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--color-navy);
}

.feature-card p,
.problem-card p,
.platform-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.feature-badge {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--color-vibrant-blue);
  font-weight: 700;
  font-size: 0.875rem;
}

.problem-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.5rem;
}

.problem-icon {
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 1rem;
  background: #fff1f2;
  color: #c91f37;
  flex-shrink: 0;
}

.problem-card-content p:first-child {
  margin: 0 0 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.platform-section {
  padding-top: 0;
  background: var(--color-navy);
  color: var(--color-white);
}

.platform-section .section-container {
  padding-bottom: 0;
}

.platform-grid {
  display: grid;
  gap: 2rem;
}

.platform-feature {
  background: rgba(255,255,255,0.08);
  padding: 1.75rem;
  border-radius: var(--radius-hss);
}

.platform-feature h3 {
  margin: 1rem 0 0.75rem;
}

.platform-feature p {
  color: rgba(255,255,255,0.75);
}

.platform-highlight {
  display: inline-block;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.12);
  border-radius: 999px;
  color: var(--color-vibrant-blue);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  margin-bottom: 1.5rem;
}

.platform-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.platform-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: rgba(255,255,255,0.78);
}

.platform-list .list-icon {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.85rem;
  background: rgba(255,255,255,0.12);
  color: var(--color-emerald);
  flex-shrink: 0;
}

.lead-section {
  background: var(--color-white);
}

.lead-grid {
  display: grid;
  gap: 2rem;
  border-radius: var(--radius-hss);
  overflow: hidden;
  border: 1px solid var(--color-gray-border);
  background: var(--color-white);
  box-shadow: 0 30px 70px rgba(15, 23, 42, 0.08);
}

.lead-panel {
  padding: 2.5rem;
  background: var(--color-navy);
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}

.lead-panel h2 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 2.5vw, 3rem);
}

.lead-panel p,
.lead-panel .lead-pill {
  color: rgba(255,255,255,0.78);
}

.lead-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lead-pill-icon {
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 1rem;
  background: rgba(255,255,255,0.12);
  color: var(--color-vibrant-blue);
}

.form-container {
  padding: 2.5rem;
}

.form-container form,
.form-success {
  display: grid;
  gap: 1.25rem;
}

.form-field {
  display: grid;
  gap: 0.75rem;
}

.form-field label {
  font-weight: 700;
}

.form-field input,
.form-field select {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius-hss);
  outline: none;
}

.form-field input:focus,
.form-field select:focus {
  border-color: var(--color-vibrant-blue);
  box-shadow: 0 0 0 3px rgba(0, 162, 253, 0.14);
}

.form-success {
  text-align: center;
  padding: 2rem 1rem;
}

.form-success h3 {
  margin: 0;
  font-size: 1.8rem;
}

.form-success p {
  margin: 0;
  color: var(--color-text-muted);
}

.hidden {
  display: none !important;
}

.error-text {
  color: #c91f37;
  text-align: center;
  font-size: 0.95rem;
}

.footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.85);
  padding: 4rem 1.5rem;
}

.footer-container {
  max-width: 1120px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--color-white);
}

.footer-links {
  display: grid;
  gap: 1.5rem;
}

.footer-links h4 {
  margin: 0 0 0.75rem;
  color: var(--color-white);
}

.footer-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.footer-links a {
  color: rgba(255,255,255,0.6);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.55);
}

/* --- Utility classes from HTML refactor --- */
.section-intro {
  margin-bottom: 3rem;
}

.problem-cards-grid {
  gap: 1.5rem;
}

.problem-image {
  border-radius: var(--radius-hss);
  box-shadow: 0 24px 60px rgba(0,0,0,0.08);
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.platform-block {
  align-items: center;
  gap: 2.5rem;
}

.platform-title {
  color: var(--color-white);
  margin-bottom: 1.5rem;
}

.platform-description {
  color: rgba(255,255,255,0.8);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.platform-image {
  border-radius: var(--radius-hss);
  box-shadow: 0 30px 80px rgba(0,0,0,0.18);
}

.form-row {
  gap: 1.5rem;
}

.success-icon {
  margin: 0 auto;
}

.footer-social {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* --- ROI Calculator Styles --- */
.roi-section {
  text-align: center;
}

.bg-light {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-gray-border);
  border-bottom: 1px solid var(--color-gray-border);
}

.roi-section h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 3vw, 3.5rem);
  margin: 0 0 0.5rem;
  line-height: 1.1;
}

.roi-section > .section-container > p {
  max-width: 600px;
  margin: 0 auto 3rem auto;
  color: var(--color-text-muted);
}

.roi-grid {
  display: grid;
  gap: 2.5rem;
  max-width: 1000px;
  margin: 0 auto;
  text-align: left;
}

.roi-inputs {
  display: grid;
  gap: 1.5rem;
}

.form-group {
  display: grid;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 600;
  font-size: 0.95rem;
}

.roi-input {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius-hss);
  outline: none;
  font-size: 1rem;
}

.roi-input:focus {
  border-color: var(--color-vibrant-blue);
  box-shadow: 0 0 0 3px rgba(0, 162, 253, 0.14);
}

.roi-results {
  background: var(--color-off-white);
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius-hss);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.roi-results h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  text-align: center;
}

.result-card {
  background: var(--color-white);
  padding: 1.25rem;
  border-radius: 1rem;
  border: 1px solid var(--color-gray-border);
  text-align: center;
}

.result-card p {
  margin: 0 auto 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 100%;
}

.result-card strong {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1;
  display: block;
}

.roi-results small {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: auto;
}

.text-success {
  color: var(--color-emerald);
}

.text-primary {
  color: var(--color-vibrant-blue);
}

@media (min-width: 768px) {
  .desktop-only {
    display: flex;
  }

  .mobile-only {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

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

  .hero-visual-bg {
    inset: -2.5rem;
  }

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

  .roi-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

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

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

  .footer-top {
    grid-template-columns: 1.1fr 0.9fr;
  }

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

@media (min-width: 1024px) {
  .site-nav {
    padding: 0 32px;
  }

  .section {
    padding: 5rem 1.5rem;
  }

  .hero-copy p {
    font-size: 1.1rem;
  }
}