:root {
  --bg: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --brand: #0b5fa5;
  --brand-2: #1067b9;
  --surface: #f6f8fb;
  --border: #e5e7eb;
}

[data-theme="dark"] {
  --bg: #0c1117;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --brand: #4a9cff;
  --brand-2: #3f87e1;
  --surface: #0f172a;
  --border: #1f2937;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container { width: min(1100px, 92%); margin: 0 auto; }

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 20px; color: var(--brand); }
.brand h1 { font-size: 18px; margin: 0; }
.subtitle { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.main-nav ul {
  display: flex; gap: 14px; list-style: none; margin: 0; padding: 0;
}
.main-nav a {
  text-decoration: none; color: var(--text); padding: 8px 10px; border-radius: 8px;
}
.main-nav a:hover { background: var(--surface); }
.nav-toggle { display: none; }

.section { padding: 48px 0; }
.section.alt { background: var(--surface); }
.section h3 { margin-top: 0; font-size: 24px; }
.section h4 { margin-bottom: 8px; font-size: 18px; }

.hero h2 { font-size: 28px; margin-top: 0; }
.cta-row { display: flex; gap: 12px; margin-top: 16px; flex-wrap: wrap; }

.btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, border-color .2s;
}
.btn:hover { background: #eef3fb; border-color: var(--brand); }
.btn.primary { background: var(--brand); color: #fff; border-color: var(--brand-2); }
.btn.primary:hover { background: var(--brand-2); }
.btn.disabled { opacity: .6; pointer-events: none; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card {
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 16px;
  border-radius: 10px;
}

.table-responsive { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
.table-plan { width: 100%; border-collapse: collapse; }
.table-plan thead th {
  background: var(--brand); color: #fff; text-align: left; padding: 12px;
}
.table-plan td, .table-plan th { border-bottom: 1px solid var(--border); padding: 12px; vertical-align: top; }
.table-plan tbody tr:hover { background: rgba(16,103,185,0.06); }

.timeline { display: grid; gap: 18px; }
.tl-item { border-left: 4px solid var(--brand); padding: 12px 16px; background: var(--bg); border-radius: 8px; }
.bullets { padding-left: 18px; margin: 0; }
.bullets li { margin-bottom: 6px; }

.downloads { list-style: none; padding: 0; margin: 0; }
.downloads li { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); }
.small { color: var(--muted); font-size: 13px; }

.contact-form { display: grid; gap: 12px; }
.form-row { display: grid; gap: 6px; }
.form-row input, .form-row textarea {
  width: 100%; padding: 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text);
}
.form-actions { display: flex; align-items: center; gap: 12px; }
.form-status { font-size: 13px; color: var(--muted); }

.site-footer { border-top: 1px solid var(--border); background: var(--bg); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }

@media (max-width: 960px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
  .main-nav ul { display: none; }
  .nav-toggle { display: inline-flex; padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
  .main-nav ul.open { display: flex; flex-direction: column; gap: 8px; background: var(--bg); position: absolute; right: 4%; top: 58px; padding: 10px; border: 1px solid var(--border); border-radius: 10px; width: 240px; }
}

@media print {
  .site-header, .site-footer, .cta-row, .downloads, .main-nav, .nav-toggle, .footer-actions { display: none !important; }
  .section { padding: 0; }
  body { color: #000; background: #fff; }
  .table-plan thead th { background: #000; color: #fff; }
}