:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #151d2f;
  --muted: #4e5b75;
  --primary: #1f6fff;
  --primary-strong: #1858ca;
  --line: #d8e0f0;
  --radius: 16px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-7: 56px;
  --space-8: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, #e9f0ff 0%, transparent 35%),
    radial-gradient(circle at 95% 10%, #eef4ff 0%, transparent 30%),
    var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.2;
}

p {
  margin: 0;
}

.container {
  width: min(1200px, calc(100% - 2 * var(--space-3)));
  margin: 0 auto;
}

.section {
  padding: var(--space-8) 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background-color: rgba(244, 247, 251, 0.88);
  border-bottom: 1px solid rgba(21, 29, 47, 0.08);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.logo {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.375rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
}

.nav {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  transition: color 0.3s ease-in-out;
}

.nav a:hover {
  color: var(--text);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
  padding: 0;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.menu-toggle span {
  position: absolute;
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
}

.menu-toggle span:nth-child(1) {
  transform: translateY(-6px);
}

.menu-toggle span:nth-child(3) {
  transform: translateY(6px);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(0) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(0) rotate(-45deg);
}

.hero {
  padding: calc(var(--space-8) + var(--space-3)) 0 var(--space-8);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: center;
}

.eyebrow {
  font-weight: 600;
  color: var(--primary-strong);
  margin-bottom: var(--space-2);
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  max-width: 14ch;
}

.hero-subheading {
  margin-top: var(--space-3);
  color: var(--muted);
  max-width: 52ch;
}

.hero-actions {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.btn {
  min-height: 48px;
  padding: 0 var(--space-3);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #ffffff;
  box-shadow: 0 12px 20px rgba(31, 111, 255, 0.22);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 24px rgba(31, 111, 255, 0.3);
}

.btn-secondary {
  color: var(--text);
  background: #ffffff;
  border-color: var(--line);
}

.btn-secondary:hover {
  background: #f0f4ff;
}

.hero-visual img {
  width: 100%;
  display: block;
  border-radius: var(--radius);
  box-shadow: 0 20px 40px rgba(16, 28, 53, 0.2);
}

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

.section-heading h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  max-width: 24ch;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-3);
  transition: transform 0.4s ease-in-out, box-shadow 0.4s ease-in-out;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 24px rgba(19, 31, 56, 0.12);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #edf3ff;
  margin-bottom: var(--space-2);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-1);
}

.feature-card p {
  color: var(--muted);
}

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.steps::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 16%;
  right: 16%;
  height: 2px;
  background: linear-gradient(90deg, #d2def9, #9db9f9, #d2def9);
  transform-origin: left;
  transform: scaleX(0);
  animation: lineGrow 0.6s ease-in-out forwards;
}

.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-3);
  position: relative;
  z-index: 1;
}

.step-number {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 700;
  background: #edf3ff;
  color: var(--primary-strong);
  margin-bottom: var(--space-2);
}

.step h3 {
  margin-bottom: var(--space-1);
}

.step p {
  color: var(--muted);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.testimonial-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: var(--space-4);
  box-shadow: 0 10px 18px rgba(14, 26, 46, 0.08);
  transition: transform 0.4s ease-in-out;
}

.testimonial-card:hover {
  transform: scale(1.02);
}

.testimonial-card p {
  color: var(--muted);
  margin-bottom: var(--space-3);
}

.testimonial-card h3 {
  font-size: 1.125rem;
}

.testimonial-card span {
  color: #6b7894;
  font-size: 0.95rem;
}

.final-cta-box {
  text-align: center;
  border-radius: calc(var(--radius) + 8px);
  padding: var(--space-7) var(--space-3);
  background: linear-gradient(145deg, #eaf1ff, #dbe8ff);
  border: 1px solid #c9d9fb;
}

.final-cta-box h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: var(--space-3);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes lineGrow {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

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

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

  .steps::before {
    display: none;
  }

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

@media (max-width: 767px) {
  .container {
    width: min(1200px, calc(100% - 2 * var(--space-2)));
  }

  .section {
    padding: var(--space-7) 0;
  }

  .header-inner {
    min-height: 64px;
    position: relative;
  }

  .menu-toggle {
    display: inline-flex;
    position: relative;
    z-index: 2;
  }

  .nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 12px 24px rgba(14, 26, 46, 0.16);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out, visibility 0.3s ease-in-out;
  }

  .nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav a {
    min-height: 48px;
    padding: 0 var(--space-2);
    border-bottom: 1px solid var(--line);
  }

  .nav a:last-child {
    border-bottom: 0;
  }

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

  .hero-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}