:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-alt: #f1f5f9;
  --border: #e2e8f0;
  --border-subtle: #cbd5e1;
  --text: #0f172a;
  --text-muted: #64748b;
  --primary: #059669;
  --primary-hover: #047857;
  --primary-light: #d1fae5;
  --accent: #10b981;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 30px rgba(15, 23, 42, 0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 9999px;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.3rem; color: var(--text); }
.logo i { color: var(--primary); font-size: 1.4rem; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-link { font-weight: 500; font-size: 0.95rem; color: var(--text-muted); transition: color 0.2s; }
.nav-link:hover { color: var(--primary); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 0.95rem; padding: 12px 24px; border-radius: var(--radius-sm); border: none; cursor: pointer; transition: all 0.2s; }
.btn-primary { background: linear-gradient(135deg, #059669 0%, #047857 100%); color: #ffffff !important; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: linear-gradient(135deg, #047857 0%, #059669 100%); transform: translateY(-1px); }
.btn-outline { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

/* Hero */
.hero { padding: 80px 0 60px; text-align: center; background: radial-gradient(circle at top, #d1fae5 0%, transparent 70%); }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 0.85rem; font-weight: 600; color: var(--primary); background: var(--primary-light); padding: 6px 14px; border-radius: var(--radius-pill); margin-bottom: 24px; }
.hero h1 { font-size: 3.4rem; font-weight: 900; letter-spacing: -0.03em; line-height: 1.15; max-width: 900px; margin: 0 auto 20px; color: var(--text); }
.hero p { font-size: 1.2rem; color: var(--text-muted); max-width: 700px; margin: 0 auto 36px; }
.hero-actions { display: flex; justify-content: center; gap: 16px; margin-bottom: 48px; }

/* Stats Bar */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; text-align: center; box-shadow: var(--shadow-sm); }
.stat-value { font-size: 2.2rem; font-weight: 800; color: var(--primary); font-family: var(--font-mono); }
.stat-label { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }

/* Sections */
.section { padding: 80px 0; }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.section-header h2 { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; }
.section-header p { color: var(--text-muted); font-size: 1.05rem; }

/* Grid Cards */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); transition: transform 0.2s, box-shadow 0.2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.card-icon { width: 48px; height: 48px; border-radius: var(--radius-sm); background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 20px; }
.card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 0.95rem; }

/* Box / Forms */
.box-container { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-md); max-width: 800px; margin: 0 auto; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 8px; color: var(--text); }
.form-control { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface); font-size: 0.95rem; color: var(--text); outline: none; }
.form-control:focus { border-color: var(--primary); }

/* Footer */
.footer { background: var(--surface); border-top: 1px solid var(--border); padding: 48px 0; color: var(--text-muted); font-size: 0.9rem; }
.footer-wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }

@media (max-width: 768px) {
  .hero h1 { font-size: 2.3rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}