:root{
  --cas-bg:#f4f8ff;
  --cas-card:#ffffff;
  --cas-line:#dbe5f3;
  --cas-text:#0f172a;
  --cas-muted:#475569;
  --cas-primary:#0f62fe;
  --cas-primary-dark:#0b4fd1;
  --cas-secondary:#e9f1ff;
  --cas-shadow:0 18px 45px rgba(15, 23, 42, 0.08);
  --cas-radius:22px;
}
.cas-hub-wrap,.cas-calculator{color:var(--cas-text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.cas-hub-wrap{max-width:1240px;margin:0 auto;padding:24px}
.cas-card{background:var(--cas-card);border:1px solid var(--cas-line);border-radius:var(--cas-radius);box-shadow:var(--cas-shadow)}
.cas-hub-hero{display:grid;grid-template-columns:1.6fr .9fr;gap:20px;align-items:stretch;margin-bottom:24px}
.cas-hub-hero>div{background:linear-gradient(180deg,#ffffff,#f8fbff);border:1px solid var(--cas-line);border-radius:var(--cas-radius);padding:28px}
.cas-hub-hero h1{margin:8px 0 10px;font-size:clamp(2rem,4vw,3rem);line-height:1.08}
.cas-hub-hero p{margin:0;color:var(--cas-muted);font-size:1rem}
.cas-eyebrow{display:inline-flex;padding:8px 12px;border-radius:999px;background:#ebf3ff;color:var(--cas-primary);font-weight:700;font-size:.85rem}
.cas-hub-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cas-stat{display:flex;flex-direction:column;justify-content:center;align-items:center;background:#fff;border:1px solid var(--cas-line);border-radius:18px;padding:18px;min-height:110px}
.cas-stat strong{font-size:1.5rem}
.cas-stat span{color:var(--cas-muted)}
.cas-hub-grid,.cas-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.cas-hub-card,.cas-related-card{background:#fff;border:1px solid var(--cas-line);border-radius:18px;padding:20px;display:flex;flex-direction:column;gap:12px}
.cas-hub-card h3,.cas-related-card strong{margin:0;font-size:1.1rem}
.cas-hub-card p,.cas-related-card p{margin:0;color:var(--cas-muted);line-height:1.6}
.cas-card-actions,.cas-action-grid,.cas-share-buttons,.cas-example-list,.cas-topbar-chip-wrap{display:flex;flex-wrap:wrap;gap:12px}
.cas-btn{appearance:none;border:none;border-radius:16px;padding:14px 18px;min-height:52px;display:inline-flex;align-items:center;justify-content:center;text-align:center;font-weight:700;font-size:.96rem;line-height:1.2;cursor:pointer;text-decoration:none;transition:.18s ease;white-space:normal}
.cas-btn:hover{transform:translateY(-1px)}
.cas-btn-primary{background:var(--cas-primary);color:#fff}
.cas-btn-primary:hover{background:var(--cas-primary-dark);color:#fff}
.cas-btn-secondary{background:#153772;color:#fff}
.cas-btn-light{background:var(--cas-secondary);color:var(--cas-text);border:1px solid #cfe0ff}
.cas-hub-stack{display:flex;flex-direction:column;gap:26px;margin-top:28px}
.cas-calculator{max-width:1240px;margin:0 auto;padding:12px 0 20px}
.cas-topbar{padding:24px;margin-bottom:18px;display:flex;justify-content:space-between;gap:16px;align-items:flex-start;background:linear-gradient(180deg,#fff,#f7fbff)}
.cas-topbar h2{margin:8px 0 8px;font-size:clamp(1.7rem,3vw,2.3rem)}
.cas-topbar p{margin:0;max-width:760px;color:var(--cas-muted);line-height:1.6}
.cas-chip,.cas-live-badge{display:inline-flex;align-items:center;justify-content:center;padding:9px 12px;border-radius:999px;background:#eef5ff;color:var(--cas-primary);border:1px solid #d5e4ff;font-weight:700;font-size:.85rem}
.cas-main-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}
.cas-input-panel,.cas-results-panel,.cas-seo-block,.cas-related-wrap{padding:22px}
.cas-panel-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:18px}
.cas-panel-head h3,.cas-seo-block h3{margin:0;font-size:1.15rem}
.cas-currency-wrap{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.cas-currency-wrap label{font-weight:600;color:var(--cas-muted)}
.cas-currency-selector,.cas-input{width:100%;min-height:54px;border:1px solid #ccd8ea;border-radius:16px;padding:0 14px;background:#fff;color:var(--cas-text);font-size:1rem;outline:none}
.cas-currency-selector:focus,.cas-input:focus{border-color:var(--cas-primary);box-shadow:0 0 0 4px rgba(15,98,254,.12)}
.cas-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.cas-field{display:flex;flex-direction:column;gap:8px}
.cas-field label{font-weight:700;font-size:.96rem}
.cas-input-wrap{position:relative}
.cas-prefix{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--cas-muted);font-weight:700;z-index:1}
.cas-input-wrap .cas-input{padding-left:32px}
.cas-example-block{margin-top:18px;padding:16px;border:1px dashed #cad7eb;border-radius:18px;background:#fbfdff}
.cas-example-block strong{display:block;margin-bottom:12px}
.cas-action-grid{margin-top:18px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.cas-metrics-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.cas-metric{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid var(--cas-line);display:flex;flex-direction:column;gap:10px;min-height:118px}
.cas-metric span{font-weight:700;color:var(--cas-muted);font-size:.92rem}
.cas-metric strong{font-size:clamp(1.2rem,2.5vw,1.55rem);line-height:1.25;word-break:break-word}
.cas-chart-wrap{margin-top:18px;padding:14px;border:1px solid var(--cas-line);border-radius:18px;background:#fff}
.cas-chart{width:100%;height:auto;display:block}
.cas-table-wrap{margin-top:18px;overflow:auto;border:1px solid var(--cas-line);border-radius:18px}
.cas-breakdown-table{width:100%;border-collapse:collapse;background:#fff}
.cas-breakdown-table th,.cas-breakdown-table td{padding:14px 12px;border-bottom:1px solid #e6edf7;text-align:left;font-size:.95rem}
.cas-breakdown-table th{background:#f7fbff;font-weight:800}
.cas-share-wrap{margin-top:18px;padding:16px;border:1px dashed #cad7eb;border-radius:18px;background:#fbfdff}
.cas-share-title{display:block;margin-bottom:12px;font-weight:800}
.cas-seo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.cas-seo-grid>div{padding:18px;border:1px solid var(--cas-line);border-radius:18px;background:#fff}
.cas-seo-grid p{margin:10px 0 0;color:var(--cas-muted);line-height:1.7}
.cas-related-wrap{margin-top:18px}
.cas-hub-tool-anchor{scroll-margin-top:28px}

@media (max-width: 1080px){
  .cas-hub-hero,.cas-main-grid,.cas-seo-grid,.cas-hub-grid,.cas-related-grid{grid-template-columns:1fr 1fr}
  .cas-topbar{flex-direction:column}
}
@media (max-width: 760px){
  .cas-hub-wrap,.cas-calculator{padding:12px}
  .cas-hub-hero,.cas-main-grid,.cas-seo-grid,.cas-hub-grid,.cas-related-grid,.cas-fields,.cas-metrics-grid,.cas-action-grid{grid-template-columns:1fr}
  .cas-hub-meta{grid-template-columns:1fr 1fr 1fr}
  .cas-btn{width:100%}
  .cas-card-actions,.cas-action-grid,.cas-share-buttons,.cas-example-list{display:grid;grid-template-columns:1fr}
}