:root {
  --brand: #0b6e4f;
  --brand-dark: #084c37;
  --brand-light: #e8f5ef;
  --accent: #e8a317;
  --ink: #15231c;
  --muted: #5c6b64;
  --canvas: #f2f5f3;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 12px 40px rgba(11, 110, 79, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: var(--canvas);
  line-height: 1.6;
}

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

a {
  color: var(--brand);
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid #e2e8e4;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--brand-dark);
  letter-spacing: -0.03em;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

.nav-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.btn-primary {
  background: var(--brand);
  color: var(--white);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-secondary {
  background: var(--white);
  color: var(--brand-dark);
  border: 1px solid #d7e0db;
}

.btn.is-disabled {
  opacity: 0.55;
  pointer-events: none;
  cursor: default;
}

.hero {
  padding: 4.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
}

.hero p.lead {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 36rem;
  margin: 0 0 1.75rem;
}

.hero-card {
  background: linear-gradient(145deg, var(--brand-dark), var(--brand));
  color: var(--white);
  border-radius: 28px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.hero-card img {
  width: 120px;
  height: 120px;
  border-radius: 24px;
  margin-bottom: 1.25rem;
}

.hero-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
}

.hero-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
}

.section {
  padding: 3.5rem 0;
}

.section h2 {
  text-align: center;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.03em;
}

.section .sub {
  text-align: center;
  color: var(--muted);
  max-width: 40rem;
  margin: 0 auto 2.5rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature {
  background: var(--white);
  border: 1px solid #e2e8e4;
  border-radius: var(--radius);
  padding: 1.5rem;
}

.feature .icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--brand-light);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.feature h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.step {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 1px solid #e2e8e4;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--white);
  display: grid;
  place-items: center;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.download {
  background: var(--white);
  border: 1px solid #e2e8e4;
  border-radius: 24px;
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.download-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.download-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

.site-footer a {
  font-weight: 600;
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .hero-grid,
  .features,
  .steps {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 2.5rem;
  }
}