:root {
  --bg: #f3f5f9;
  --panel: #ffffff;
  --ink: #1d2733;
  --muted: #66758a;
  --line: #d7dee8;
  --accent: #1f4e79;
  --accent-2: #2e75b6;
  --ok: #2e9e44;
  --warn: #f08c00;
  --bad: #d33030;
  --tier0: #2e9e44; --tier1: #8fc63f; --tier2: #f2c500; --tier3: #f08c00; --tier4: #d33030;
  font-size: 15px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", system-ui, sans-serif; background: var(--bg); color: var(--ink); }

.nav {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff; padding: 12px 28px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.nav .brand { font-weight: 800; font-size: 1.05rem; margin-right: auto; color: #fff; text-decoration: none; }
.nav a { color: #d8e4f2; text-decoration: none; font-weight: 600; font-size: .9rem; }
.nav a:hover { color: #fff; }
.nav .btn { padding: 6px 14px; }

.btn {
  display: inline-block; background: #fff; color: var(--accent); border: 1px solid var(--line);
  border-radius: 7px; padding: 9px 18px; cursor: pointer; font-weight: 700; font-size: .9rem;
  text-decoration: none; text-align: center;
}
.btn:hover { background: #eef3f9; }
.btn-primary { background: var(--accent-2); color: #fff; border-color: var(--accent-2); }
.btn-primary:hover { background: var(--accent); }
.btn-big { font-size: 1rem; padding: 12px 26px; }

main { max-width: 1100px; margin: 0 auto; padding: 28px 22px 80px; }

.hero { text-align: center; padding: 48px 10px 30px; }
.hero h1 { font-size: 2rem; margin: 0 0 12px; color: var(--accent); }
.hero p { color: var(--muted); max-width: 720px; margin: 0 auto 24px; line-height: 1.55; }
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 36px 0; }
.feature { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px; }
.feature h3 { margin: 0 0 8px; font-size: .98rem; color: var(--accent); }
.feature p { margin: 0; font-size: .86rem; color: var(--muted); line-height: 1.5; }

.pricing { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin: 30px 0; }
.price-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 26px 30px;
  width: 290px; text-align: center; box-shadow: 0 2px 8px rgba(20,40,70,.07);
}
.price-card.best { border: 2px solid var(--accent-2); position: relative; }
.price-card .flag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent-2); color: #fff; font-size: .72rem; font-weight: 700;
  padding: 3px 12px; border-radius: 12px;
}
.price-card h3 { margin: 0 0 4px; color: var(--accent); }
.price-card .price { font-size: 2.2rem; font-weight: 800; color: var(--ink); }
.price-card .per { color: var(--muted); font-size: .85rem; margin-bottom: 14px; }
.price-card ul { text-align: left; font-size: .85rem; color: var(--muted); padding-left: 20px; line-height: 1.7; }

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 26px 30px; max-width: 440px; margin: 40px auto; box-shadow: 0 2px 8px rgba(20,40,70,.07);
}
.panel.wide { max-width: 860px; }
.panel h2 { margin: 0 0 16px; color: var(--accent); font-size: 1.2rem; }
.panel label { display: block; font-weight: 600; font-size: .88rem; margin: 12px 0 4px; }
.panel input, .panel select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 7px; font-size: .92rem;
}
.panel .btn { width: 100%; margin-top: 18px; }
.formerr { color: var(--bad); font-size: .85rem; min-height: 1.2em; margin-top: 10px; }
.formnote { color: var(--muted); font-size: .85rem; margin-top: 14px; text-align: center; }
.formnote a { color: var(--accent-2); }

.badge { display: inline-block; padding: 3px 12px; border-radius: 12px; font-size: .8rem; font-weight: 700; color: #fff; }
.badge.on { background: var(--ok); }
.badge.off { background: var(--bad); }
.badge.demo { background: var(--warn); }

.kv { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 10px 0; }
.kv td { padding: 8px 6px; border-bottom: 1px solid var(--line); }
.kv td:first-child { font-weight: 600; color: var(--muted); width: 45%; }

.demo-banner {
  background: #fff8e1; border: 1px solid #e8d48a; color: #7a5c00; border-radius: 8px;
  padding: 9px 14px; font-size: .85rem; font-weight: 600; margin-bottom: 18px; text-align: center;
}

footer { text-align: center; color: var(--muted); font-size: .8rem; padding: 26px; border-top: 1px solid var(--line); }

/* ---- preview calculator ---- */
table.data { width: 100%; border-collapse: collapse; font-size: .85rem; }
table.data th, table.data td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; }
table.data thead th { background: var(--accent); color: #fff; }
table.data tbody tr:nth-child(even) { background: #f7fafd; }
.total-row { background: #e9eff7 !important; font-weight: 700; }
td.score { font-weight: 700; text-align: center; min-width: 70px; }
.tierbox { border-radius: 6px; color: #fff !important; text-align: center; font-weight: 700; }
.tier-0 { background: var(--tier0); } .tier-1 { background: var(--tier1); color: #1d2733 !important; }
.tier-2 { background: var(--tier2); color: #1d2733 !important; } .tier-3 { background: var(--tier3); }
.tier-4 { background: var(--tier4); }
select.riskval, input.adj { width: 84px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 5px; font-weight: 600; text-align: center; }
.locked {
  background: var(--panel); border: 1px dashed var(--accent-2); border-radius: 10px;
  padding: 16px 20px; margin-top: 22px; font-size: .9rem;
}
.locked h3 { margin: 0 0 8px; color: var(--accent); }
.locked ul { columns: 2; margin: 8px 0; padding-left: 20px; color: var(--muted); font-size: .85rem; line-height: 1.7; }
@media (max-width: 700px) { .locked ul { columns: 1; } }