:root {
  --accent: #0D9488;
  --accent-hover: #0F766E;
  --accent-soft: rgba(13, 148, 136, 0.12);
  --accent-muted: rgba(13, 148, 136, 0.06);
  --radius: 8px;
  --max-width: 1180px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3.5rem;
  --space-xl: 5rem;
  --space-2xl: 7rem;
  --bg-dark: #0B1120;
  --surface-dark: #111827;
  --surface-elevated-dark: #1E293B;
  --surface-hover-dark: #243447;
  --text-primary-dark: #F8FAFC;
  --text-secondary-dark: #94A3B8;
  --text-muted-dark: #64748B;
  --border-dark: rgba(148, 163, 184, 0.12);
  --border-strong-dark: rgba(148, 163, 184, 0.18);
  --bg-light: #F8FAFC;
  --surface-light: #FFFFFF;
  --surface-elevated-light: #F1F5F9;
  --surface-hover-light: #E2E8F0;
  --text-primary-light: #0F172A;
  --text-secondary-light: #475569;
  --text-muted-light: #64748B;
  --border-light: rgba(15, 23, 42, 0.08);
  --border-strong-light: rgba(15, 23, 42, 0.14);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg-dark);
  color: var(--text-primary-dark);
  min-height: 100vh;
}

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

h1, h2, h3, h4, h5 {
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.2rem, 4.5vw + 0.5rem, 3.6rem); }
h2 { font-size: clamp(1.7rem, 2.8vw + 0.4rem, 2.4rem); }
h3 { font-size: clamp(1.05rem, 1.3vw + 0.3rem, 1.3rem); }

.lead {
  font-size: clamp(1rem, 1vw + 0.5rem, 1.2rem);
  line-height: 1.7;
  max-width: 58ch;
}

.label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
}

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

@media (min-width: 768px) {
  .container { padding: 0 var(--space-md); }
}

.grid-2 {
  display: grid;
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
}

.grid-3 {
  display: grid;
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
}

.grid-4 {
  display: grid;
  gap: var(--space-md);
}
@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.92rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(13, 148, 136, 0.22);
}

.btn-ghost-dark {
  background: transparent;
  color: var(--text-primary-dark);
  border-color: var(--border-strong-dark);
}
.btn-ghost-dark:hover {
  background: var(--surface-hover-dark);
  border-color: var(--text-muted-dark);
}

.btn-ghost-light {
  background: transparent;
  color: var(--text-primary-light);
  border-color: var(--border-strong-light);
}
.btn-ghost-light:hover {
  background: var(--surface-hover-light);
  border-color: var(--text-muted-light);
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--border-dark);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--text-primary-dark);
}

.logo span { color: var(--accent); }

.nav { display: none; }
@media (min-width: 1024px) {
  .nav {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
  .nav a {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary-dark);
    transition: color 0.2s ease;
  }
  .nav a:hover, .nav a.active { color: var(--text-primary-dark); }
}

.header-cta { display: none; }
@media (min-width: 1024px) {
  .header-cta { display: inline-flex; }
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--surface-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  color: var(--text-primary-dark);
  cursor: pointer;
}
@media (min-width: 1024px) { .menu-toggle { display: none; } }

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  padding: var(--space-sm) var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-dark);
  background: rgba(11, 17, 32, 0.97);
  backdrop-filter: blur(14px);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 0.75rem 0.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary-dark);
  border-radius: var(--radius);
}
.mobile-nav a:hover, .mobile-nav a.active {
  color: var(--text-primary-dark);
  background: var(--surface-dark);
}
.mobile-nav .btn { margin-top: 0.5rem; justify-content: center; }

.section-dark {
  padding: var(--space-xl) 0;
  background: var(--bg-dark);
  color: var(--text-primary-dark);
}
.section-light {
  padding: var(--space-xl) 0;
  background: var(--bg-light);
  color: var(--text-primary-light);
}
.section-surface-dark {
  padding: var(--space-xl) 0;
  background: var(--surface-dark);
  color: var(--text-primary-dark);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
}
.section-surface-light {
  padding: var(--space-xl) 0;
  background: var(--surface-light);
  color: var(--text-primary-light);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

@media (min-width: 768px) {
  .section-dark, .section-light, .section-surface-dark, .section-surface-light {
    padding: var(--space-2xl) 0;
  }
}

.hero {
  padding: var(--space-xl) 0 var(--space-lg);
}
@media (min-width: 768px) {
  .hero { padding: var(--space-2xl) 0 var(--space-xl); }
}

.hero h1 {
  max-width: 18ch;
  margin-bottom: var(--space-sm);
}

.hero .lead {
  max-width: 56ch;
  margin-bottom: var(--space-md);
  color: var(--text-secondary-dark);
}

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

.card-dark {
  background: var(--surface-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: var(--space-md);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.card-dark:hover {
  border-color: var(--border-strong-dark);
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
}
.card-dark h3 {
  margin-bottom: 0.5rem;
  color: var(--text-primary-dark);
}
.card-dark p {
  color: var(--text-secondary-dark);
  font-size: 0.94rem;
  line-height: 1.65;
}
.card-dark .icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius);
  margin-bottom: var(--space-sm);
  font-size: 1.15rem;
}

.card-light {
  background: var(--surface-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: var(--space-md);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.card-light:hover {
  border-color: var(--border-strong-light);
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.08);
}
.card-light h3 {
  margin-bottom: 0.5rem;
  color: var(--text-primary-light);
}
.card-light p {
  color: var(--text-secondary-light);
  font-size: 0.94rem;
  line-height: 1.65;
}
.card-light .icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius);
  margin-bottom: var(--space-sm);
  font-size: 1.15rem;
}

.step {
  position: relative;
  padding-left: 2.8rem;
}
.step::before {
  content: attr(data-step);
  position: absolute;
  left: 0;
  top: 0.05rem;
  font-size: 0.75rem;
  font-weight: 700;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 50%;
}
.step h4 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
  font-weight: 600;
}
.step p {
  font-size: 0.94rem;
  color: inherit;
  opacity: 0.75;
}

input.dark, textarea.dark, select.dark {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--surface-elevated-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  color: var(--text-primary-dark);
  font: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
input.dark:focus, textarea.dark:focus, select.dark:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
label.dark {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--text-secondary-dark);
}

input.light, textarea.light, select.light {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--surface-elevated-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  color: var(--text-primary-light);
  font: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
input.light:focus, textarea.light:focus, select.light:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
label.light {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--text-secondary-light);
}

.form-group { margin-bottom: 1.25rem; }

.feature-list-dark {
  list-style: none;
  display: grid;
  gap: 0.65rem;
}
.feature-list-dark li {
  position: relative;
  padding-left: 1.6rem;
  color: var(--text-secondary-dark);
  font-size: 0.94rem;
}
.feature-list-dark li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.feature-list-light {
  list-style: none;
  display: grid;
  gap: 0.65rem;
}
.feature-list-light li {
  position: relative;
  padding-left: 1.6rem;
  color: var(--text-secondary-light);
  font-size: 0.94rem;
}
.feature-list-light li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.footer {
  padding: var(--space-xl) 0 var(--space-md);
  border-top: 1px solid var(--border-dark);
  background: var(--surface-dark);
}
.footer-grid {
  display: grid;
  gap: var(--space-lg);
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}
.footer-brand p {
  color: var(--text-muted-dark);
  font-size: 0.88rem;
  margin-top: 0.75rem;
  max-width: 32ch;
  line-height: 1.6;
}
.footer-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted-dark);
  margin-bottom: var(--space-sm);
}
.footer-links {
  list-style: none;
  display: grid;
  gap: 0.55rem;
}
.footer-links a {
  color: var(--text-secondary-dark);
  font-size: 0.88rem;
  transition: color 0.2s ease;
}
.footer-links a:hover { color: var(--text-primary-dark); }

.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-dark);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  color: var(--text-muted-dark);
  font-size: 0.82rem;
}

.text-center { text-align: center; }
.text-center .lead { margin-left: auto; margin-right: auto; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.case-card {
  background: var(--surface-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  overflow: hidden;
  display: grid;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
@media (min-width: 768px) {
  .case-card { grid-template-columns: 1fr 1fr; }
}
.case-card:hover {
  border-color: var(--border-strong-dark);
  box-shadow: 0 20px 56px rgba(0,0,0,0.45);
}
.case-content { padding: var(--space-md); }
@media (min-width: 768px) { .case-content { padding: var(--space-lg); } }
.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
}
.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  background: var(--surface-elevated-dark);
  border: 1px solid var(--border-dark);
  border-radius: 999px;
  color: var(--text-secondary-dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat {
  display: flex;
  flex-direction: column;
}
.stat-value {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text-primary-dark);
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted-dark);
  margin-top: 0.25rem;
}

.line {
  width: 40px;
  height: 3px;
  background: var(--accent);
  margin-bottom: var(--space-sm);
  border-radius: 2px;
}

.trust-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .trust-bar { grid-template-columns: repeat(4, 1fr); }
}
.trust-item {
  text-align: center;
}
.trust-number {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary-light);
  letter-spacing: -0.02em;
}
.trust-desc {
  font-size: 0.85rem;
  color: var(--text-secondary-light);
  margin-top: 0.25rem;
}

.ai-grid {
  display: grid;
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .ai-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
}
.ai-item {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}
.ai-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius);
}
.ai-item h4 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
  color: var(--text-primary-light);
}
.ai-item p {
  font-size: 0.92rem;
  color: var(--text-secondary-light);
  line-height: 1.6;
}

.testimonial {
  background: var(--surface-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: var(--space-md);
}
@media (min-width: 768px) {
  .testimonial { padding: var(--space-lg); }
}
.testimonial-text {
  font-size: clamp(1.05rem, 1.2vw + 0.3rem, 1.25rem);
  line-height: 1.7;
  color: var(--text-primary-light);
  font-style: italic;
  margin-bottom: var(--space-md);
}
.testimonial-author {
  font-weight: 600;
  color: var(--text-primary-light);
  font-size: 0.95rem;
}
.testimonial-role {
  font-size: 0.85rem;
  color: var(--text-muted-light);
}

.cta-banner {
  background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  padding: var(--space-lg);
  text-align: center;
}
@media (min-width: 768px) {
  .cta-banner { padding: var(--space-xl); }
}
.cta-banner h2 {
  color: #FFFFFF;
  margin-bottom: var(--space-sm);
}
.cta-banner p {
  color: rgba(255,255,255,0.88);
  max-width: 54ch;
  margin: 0 auto var(--space-md);
}
.cta-banner .btn {
  background: #FFFFFF;
  color: var(--accent-hover);
  border-color: #FFFFFF;
}
.cta-banner .btn:hover {
  background: rgba(255,255,255,0.92);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.15);
}

[id] { scroll-margin-top: 80px; }