:root {
  --bg: #0b1020;
  --panel: #11182c;
  --panel-2: #16203a;
  --text: #e8ecf8;
  --muted: #b5bfd8;
  --border: #283250;
  --accent: #89a7ff;
  --accent-2: #c8d6ff;
  --max: 1080px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: linear-gradient(180deg, #0b1020 0%, #10182d 100%);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header { padding: 24px 0 8px; }
.brand { font-size: 1.1rem; font-weight: 800; letter-spacing: 0.02em; }
.hero { padding: 24px 0 18px; }
.hero-card, .panel {
  background: rgba(17, 24, 44, 0.92);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.22);
}
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1; margin: 0 0 12px; }
.hero p { margin: 0 0 10px; color: var(--muted); }
.grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; }
.section { padding: 14px 0; }
.section h2 { font-size: 1.6rem; margin: 0 0 14px; }
.section h3 { font-size: 1.15rem; margin: 18px 0 8px; }
.card-list, .info-list, .related-list, .footer-links { padding-left: 18px; }
.calc-form label { display: block; font-weight: 700; margin: 14px 0 6px; }
.calc-form input, .calc-form select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
}
.button {
  margin-top: 18px;
  background: var(--accent);
  color: #0b1020;
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  font-weight: 800;
  cursor: pointer;
}
.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}
.result-card {
  background: #0d1427;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}
.label { display: block; color: var(--muted); margin-bottom: 6px; }
.result-note { color: var(--muted); }
.callout {
  border-left: 4px solid var(--accent);
  padding: 10px 14px;
  background: rgba(137, 167, 255, 0.08);
  border-radius: 8px;
}
footer.site-footer { padding: 28px 0 40px; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1.6fr 1fr;
  gap: 24px;
  background: rgba(17, 24, 44, 0.92);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}
.footer-title { font-weight: 800; margin: 0 0 10px; }
.footer-copy { color: var(--muted); margin: 8px 0 0; }
.small { font-size: 0.95rem; color: var(--muted); }
.table-wrap { overflow-x: auto; }
table {
  width: 100%; border-collapse: collapse; background: rgba(17, 24, 44, 0.92);
  border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
}
th, td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; }
@media (max-width: 900px) {
  .grid, .footer-inner, .result-grid { grid-template-columns: 1fr; }
}