:root {
  --bg: #fafaf7;
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --line: #e5e5e0;
  --brand: #ce5b1a;
  --brand-dark: #a64310;
  --brand-soft: #fff2e8;
  --green: #14843e;
  --red: #c53030;
  --blue: #2563eb;
  --water: #0891b2;
  --solar: #d97706;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  font-size: 15px;
}
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-dark); }
h1 { font-size: 2.2rem; line-height: 1.15; margin: 0 0 16px; font-weight: 700; }
h2 { font-size: 1.5rem; line-height: 1.2; margin: 0 0 12px; font-weight: 700; }
h3 { font-size: 1.15rem; margin: 0 0 8px; font-weight: 600; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 520px; margin: 0 auto; padding: 0 24px; }

.nav {
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand-logo { font-size: 1.4rem; font-weight: 800; color: var(--ink); letter-spacing: -0.5px; }
.brand-logo span { color: var(--brand); }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--ink); font-weight: 500; }
.nav-links a:hover { color: var(--brand); }

.btn {
  display: inline-block; padding: 10px 18px; border-radius: 8px;
  background: var(--brand); color: #fff; font-weight: 600;
  border: none; cursor: pointer; font-size: 0.95rem;
  transition: background 0.15s;
}
.btn:hover { background: var(--brand-dark); color: #fff; }
.btn-secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn-secondary:hover { background: #f5f5f0; color: var(--ink); }
.btn-water { background: var(--water); }
.btn-water:hover { background: #0e7490; }
.btn-solar { background: var(--solar); }
.btn-solar:hover { background: #b45309; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.card {
  background: #fff; border-radius: 10px; border: 1px solid var(--line);
  padding: 20px;
}

.input, .select {
  width: 100%; padding: 10px 12px; font-size: 0.95rem;
  border: 1px solid var(--line); border-radius: 8px;
  background: #fff; color: var(--ink);
}
.input:focus, .select:focus { outline: none; border-color: var(--brand); }
.label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--muted); }
.field { margin-bottom: 14px; }

.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.78rem; font-weight: 600; }
.tag-water { background: #e0f2fe; color: var(--water); }
.tag-solar { background: #fef3c7; color: var(--solar); }
.tag-success { background: #dcfce7; color: var(--green); }
.tag-warn { background: #fef9c3; color: #854d0e; }
.tag-error { background: #fee2e2; color: var(--red); }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.row > * { flex: 1 1 auto; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 720px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.stat-num { font-size: 2rem; font-weight: 700; color: var(--ink); line-height: 1; }
.stat-label { font-size: 0.82rem; color: var(--muted); margin-top: 6px; text-transform: uppercase; letter-spacing: 0.5px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
table.tbl th, table.tbl td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); }
table.tbl th { background: #f9f9f5; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); }
table.tbl tr:hover { background: #f9f9f5; }

.error-box {
  background: #fee2e2; border: 1px solid #fca5a5; color: #991b1b;
  padding: 10px 14px; border-radius: 8px; font-size: 0.9rem;
}
.success-box {
  background: #dcfce7; border: 1px solid #86efac; color: #166534;
  padding: 10px 14px; border-radius: 8px; font-size: 0.9rem;
}

.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--line); margin-bottom: 18px; }
.tab { padding: 10px 18px; border: none; background: transparent; cursor: pointer; font-weight: 600; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -2px; }
.tab.active { color: var(--brand); border-bottom-color: var(--brand); }

.hero {
  background: linear-gradient(135deg, var(--brand-soft) 0%, #fff 100%);
  padding: 80px 0 60px;
}
.hero h1 { font-size: 3.2rem; }
.hero p.lead { font-size: 1.18rem; color: var(--muted); max-width: 580px; }
@media (max-width: 720px) { .hero h1 { font-size: 2.2rem; } }

.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 40px; }
@media (max-width: 720px) { .feature-grid { grid-template-columns: 1fr; } }
.feature-card {
  padding: 28px; border-radius: 12px; background: #fff; border: 1px solid var(--line);
}
.feature-card.water { border-top: 4px solid var(--water); }
.feature-card.solar { border-top: 4px solid var(--solar); }
.feature-card h3 { font-size: 1.4rem; margin-bottom: 12px; }
.feature-card .price { font-size: 1.6rem; font-weight: 700; color: var(--ink); margin: 12px 0; }
.feature-card .price small { font-size: 0.85rem; font-weight: 400; color: var(--muted); }

footer.site-footer {
  background: #1a1a1a; color: #aaa; padding: 36px 0; margin-top: 60px; font-size: 0.9rem;
}
footer.site-footer .brand-logo { color: #fff; }
footer.site-footer .brand-logo span { color: var(--brand); }
footer.site-footer a { color: #aaa; }
footer.site-footer a:hover { color: #fff; }

.lead-card {
  border: 1px solid var(--line); border-radius: 10px; background: #fff;
  padding: 16px 18px; transition: border-color 0.15s;
}
.lead-card:hover { border-color: var(--brand); }
.lead-card .header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
.lead-card .price-big { font-size: 1.6rem; font-weight: 700; color: var(--ink); }
.lead-card .meta { color: var(--muted); font-size: 0.88rem; }

.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,0.45); display: none; align-items: center; justify-content: center; z-index: 100; }
.modal-bg.show { display: flex; }
.modal { background: #fff; border-radius: 12px; padding: 28px; max-width: 460px; width: 92%; }