/* Reset & base */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: #0f172a;
  background: #f8fafc;
}

:root {
  --brand: #0c7c59;
  --brand-600: #0e8f66;
  --ink: #0f172a;
  --muted: #475569;
  --surface: #ffffff;
  --surface-alt: #f1f5f9;
  --ring: rgba(12, 124, 89, 0.35);
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 14px;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 250, 252, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e2e8f0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
}
.brand-name { letter-spacing: 0.2px; }

.site-nav { display: flex; gap: 18px; align-items: center; }
.site-nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.site-nav a:hover { color: var(--ink); }

.nav-toggle { display: none; font-size: 20px; border: 0; background: transparent; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  background: var(--brand);
  color: #fff;
  border-radius: 12px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
  box-shadow: var(--shadow);
}
.btn:hover { background: var(--brand-600); }
.btn:focus { outline: 3px solid var(--ring); outline-offset: 2px; }
.btn-ghost { background: transparent; color: var(--brand); border-color: #cbd5e1; box-shadow: none; }
.btn-small { padding: 8px 12px; border-radius: 10px; }

/* Hero */
.hero { padding: 72px 0 32px; background: radial-gradient(1200px 600px at 80% -10%, #c7f9e5 0%, rgba(199,249,229,0) 60%), #f8fafc; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 32px; align-items: center; }
.hero-content h1 { font-size: 44px; line-height: 1.1; margin: 0 0 14px; letter-spacing: -0.02em; }
.hero-content p { color: var(--muted); margin: 0 0 20px; font-size: 18px; }
.hero-ctas { display: flex; gap: 12px; margin-bottom: 14px; }
.hero-highlights { display: flex; gap: 16px; padding: 0; margin: 8px 0 0; list-style: none; color: var(--muted); font-size: 14px; }

.hero-art { display: grid; place-items: center; }
.orbit { position: relative; width: 340px; height: 340px; border-radius: 50%; background: linear-gradient(135deg, #ffffff, #e6fff6); box-shadow: var(--shadow); }
.planet { position: absolute; width: 120px; height: 120px; border-radius: 50%; background: var(--brand); left: 110px; top: 110px; box-shadow: inset 0 0 30px rgba(0,0,0,0.15); }
.satellite { position: absolute; width: 20px; height: 20px; background: #10b981; border-radius: 50%; animation: spin 9s linear infinite; transform-origin: 150px 150px; left: 10px; top: 10px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Sections */
.section { padding: 56px 0; }
.section.alt { background: var(--surface-alt); border-top: 1px solid #e2e8f0; border-bottom: 1px solid #e2e8f0; }
.section h2 { font-size: 28px; margin: 0 0 22px; }

.grid { display: grid; gap: 16px; }
.cards { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--surface); border: 1px solid #e2e8f0; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0 0 10px; color: var(--muted); }
.card ul { margin: 0; padding-left: 18px; color: var(--muted); }

.cases { grid-template-columns: repeat(3, 1fr); }
.case { background: var(--surface); border: 1px solid #e2e8f0; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.case header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.tag { background: #dcfce7; color: #166534; border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 700; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; padding: 0; list-style: none; }
.steps li { background: var(--surface); border: 1px solid #e2e8f0; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.steps h3 { margin: 0 0 8px; font-size: 18px; }
.steps p { margin: 0; color: var(--muted); }

.stack { display: flex; flex-wrap: wrap; gap: 10px; }
.stack span { background: #e2f7f0; color: #065f46; border: 1px solid #a7f3d0; padding: 8px 12px; border-radius: 999px; font-weight: 600; font-size: 13px; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.contact-form { display: grid; gap: 12px; background: var(--surface); border: 1px solid #e2e8f0; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.contact-form label { display: grid; gap: 6px; font-weight: 600; color: var(--ink); }
.contact-form input, .contact-form textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
}
.contact-form input:focus, .contact-form textarea:focus { outline: 3px solid var(--ring); border-color: var(--brand); }
.form-note { color: var(--muted); font-size: 12px; margin: 0; }

/* Footer */
.site-footer { padding: 24px 0; border-top: 1px solid #e2e8f0; background: #ffffff; }
.footer-inner { display: flex; gap: 12px; align-items: center; justify-content: space-between; color: var(--muted); }
.footer-nav { display: flex; gap: 14px; }
.footer-nav a { color: var(--muted); text-decoration: none; }
.footer-nav a:hover { color: var(--ink); }

/* Responsive */
@media (max-width: 1000px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cases { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .site-nav { display: none; position: absolute; right: 20px; top: 60px; background: #ffffff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 10px; box-shadow: var(--shadow); }
  .site-nav.open { display: grid; }
  .site-nav a { padding: 8px 10px; }

  .cards { grid-template-columns: 1fr; }
  .cases { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
  .hero-content h1 { font-size: 34px; }
}