:root {
  --color-bg: #f4f7f5;
  --color-surface: #ffffff;
  --color-border: #d8e3dc;
  --color-text: #0f172a;
  --color-muted: #475569;
  --color-link: #156548;
  --color-primary: #1f8a62;
  --color-primary-hover-bg: #176b4c;
  --color-primary-hover: #176b4c;
  --color-link-hover: #176b4c;
  --color-primary-text: #156548;
  --color-on-primary: #ffffff;
  --color-accent: #5eead4;
  --radius: 16px;
  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  --focus-ring: 0 0 0 3px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

[data-theme='dark'] {
  --color-bg: #0b0f0e;
  --color-surface: #13201c;
  --color-border: #2a5c4a;
  --color-text: #ecfdf5;
  --color-muted: #a8b8c8;
  --color-link: #6ee7c7;
  --color-primary: #2dd4a8;
  --color-primary-hover-bg: #1a9b7a;
  --color-primary-hover: #5eead4;
  --color-link-hover: #5eead4;
  --color-primary-text: #6ee7c7;
  --color-on-primary: #062018;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

a { color: var(--color-link); text-decoration: none; }
a:not(.btn):hover { color: var(--color-link-hover); text-decoration: underline; }

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-primary-text);
  text-decoration: none;
}

.logo:hover { text-decoration: none; }

.logo-mark,
.logo-wordmark,
.hero-logo,
.footer-icon {
  background: transparent;
  display: block;
}

.logo-mark {
  border-radius: 10px;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo-wordmark {
  width: auto;
  max-width: min(180px, 42vw);
  height: 36px;
  object-fit: contain;
}

.hero-logo {
  display: block;
  width: min(320px, 85%);
  max-width: 100%;
  height: auto;
  margin: 0 0 1.25rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.15rem;
  border-radius: 10px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-hover-bg);
  color: var(--color-on-primary);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--color-text);
  text-decoration: none;
}

.hero {
  padding: 4rem 0 3rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin: 0 0 1rem;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-muted);
  margin: 0 0 1.5rem;
  max-width: 38rem;
}

.hero-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero-card ul {
  margin: 0;
  padding-left: 1.1rem;
}

.hero-card li { margin: 0.5rem 0; }

.section {
  padding: 3rem 0;
}

.section-title {
  text-align: center;
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
}

.section-sub {
  text-align: center;
  color: var(--color-muted);
  margin: 0 auto 2rem;
  max-width: 40rem;
}

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

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

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

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

.step-num {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.cta-band {
  margin: 2rem 0 4rem;
  padding: 2.5rem;
  border-radius: var(--radius);
  background: linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 18%, var(--color-surface)), var(--color-surface));
  border: 1px solid var(--color-border);
  text-align: center;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-icon {
  border-radius: 6px;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}