:root {
  --bg: #090d16;
  --surface: #111827;
  --surface-border: #1f293d;
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.15);
  --card-bg: #141e33;
}
* { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background: var(--bg); color: var(--text); line-height: 1.6; padding-bottom: 60px; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
header { border-bottom: 1px solid var(--surface-border); background: rgba(17, 24, 39, 0.85); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 50; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.nav { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.logo { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.5px; color: #fff; display: flex; align-items: center; gap: 8px; }
.logo span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 20px; }
.nav-links a { color: var(--text-muted); font-size: 0.95rem; font-weight: 500; }
.nav-links a:hover { color: #fff; text-decoration: none; }
.hero { text-align: center; padding: 60px 0 40px; }
.hero h1 { font-size: 2.75rem; font-weight: 800; letter-spacing: -1px; margin-bottom: 16px; color: #fff; }
.hero p { font-size: 1.2rem; color: var(--text-muted); max-width: 700px; margin: 0 auto 30px; }
.card { background: var(--card-bg); border: 1px solid var(--surface-border); border-radius: 16px; padding: 32px; margin-bottom: 30px; box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
.rate-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 24px 0; }
.rate-box { background: var(--surface); border: 1px solid var(--surface-border); border-radius: 12px; padding: 20px; text-align: center; }
.rate-box .tier { font-size: 0.85rem; text-transform: uppercase; color: var(--text-muted); letter-spacing: 0.5px; font-weight: 600; margin-bottom: 6px; }
.rate-box .rate { font-size: 1.85rem; font-weight: 800; color: #fff; }
.rate-box.highlight { border-color: var(--accent); background: var(--accent-glow); }
.rate-box.highlight .rate { color: #34d399; }
.calculator { margin-top: 30px; padding: 24px; background: var(--surface); border-radius: 12px; border: 1px solid var(--surface-border); }
.calc-row { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 20px; align-items: center; }
.calc-field { flex: 1; min-width: 200px; }
.calc-field label { display: block; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 8px; }
.calc-field input, .calc-field select { width: 100%; background: #0b1120; border: 1px solid var(--surface-border); color: #fff; padding: 12px; border-radius: 8px; font-size: 1rem; }
.calc-result { font-size: 1.4rem; font-weight: 700; color: var(--primary); margin-top: 10px; }
.cta-banner { background: linear-gradient(135deg, #1e3a8a, #065f46); border: 1px solid #3b82f6; border-radius: 16px; padding: 32px; margin: 40px 0; text-align: center; }
.cta-banner h3 { font-size: 1.7rem; margin-bottom: 12px; color: #fff; }
.cta-banner p { color: #e0e7ff; max-width: 600px; margin: 0 auto 20px; font-size: 1.05rem; }
.btn { display: inline-block; background: #fff; color: #111827; padding: 12px 28px; border-radius: 8px; font-weight: 700; text-decoration: none; transition: transform 0.2s; }
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.links-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin-top: 24px; }
.link-card { background: var(--surface); border: 1px solid var(--surface-border); border-radius: 8px; padding: 14px 18px; color: var(--text); display: block; transition: all 0.2s; }
.link-card:hover { border-color: var(--primary); background: #162238; text-decoration: none; transform: translateX(4px); }
footer { text-align: center; margin-top: 60px; color: var(--text-muted); font-size: 0.9rem; border-top: 1px solid var(--surface-border); padding-top: 30px; }

/* Audit tool styles */
.audit-input-wrap { display: flex; gap: 12px; max-width: 650px; margin: 0 auto 30px; }
.audit-input { flex: 1; background: #0b1120; border: 1px solid var(--surface-border); color: #fff; padding: 14px 20px; border-radius: 10px; font-size: 1.1rem; }
.audit-btn { background: var(--primary); color: #fff; border: none; padding: 14px 28px; border-radius: 10px; font-weight: 700; cursor: pointer; font-size: 1rem; transition: background 0.2s; }
.audit-btn:hover { background: var(--primary-hover); }
.audit-status { margin: 20px 0; font-size: 0.95rem; color: var(--text-muted); display: none; }
.progress-bar { width: 100%; height: 8px; background: #1f293d; border-radius: 4px; overflow: hidden; margin-top: 8px; }
.progress-fill { width: 0%; height: 100%; background: var(--accent); transition: width 0.3s ease; }
.result-card { display: none; margin-top: 30px; text-align: left; }
.score-badge { display: inline-flex; align-items: center; justify-content: center; width: 90px; height: 90px; border-radius: 50%; font-size: 2.2rem; font-weight: 800; border: 4px solid var(--accent); color: var(--accent); margin-bottom: 20px; }
.check-item { display: flex; align-items: flex-start; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--surface-border); }
.check-icon { font-size: 1.3rem; }
.check-title { font-weight: 700; color: #fff; margin-bottom: 4px; }
.check-desc { font-size: 0.9rem; color: var(--text-muted); }