.bmc-math{--cc-surface:#fff;--cc-surface-muted:#f8fafc;--cc-border:#e2e8f0;--cc-text-main:#0f172a;--cc-text-muted:#64748b;--cc-primary:#2563eb;--cc-primary-dark:#1d4ed8;--cc-shadow:0 2px 8px rgba(0,0,0,.06);--cc-accent:#2563eb;}
.cc-calc{max-width:720px;margin-bottom:2rem;}
.cc-card{background:var(--surface,var(--cc-surface));border:1px solid var(--border,var(--cc-border));border-radius:12px;padding:1.25rem;box-shadow:var(--shadow-soft,var(--cc-shadow));}
@media (min-width:480px){.cc-card{padding:1.5rem;}}
@media (min-width:768px){.cc-card{padding:2rem;border-radius:16px;}}
.cc-form{margin-bottom:0;}
.cc-row{display:flex;flex-direction:column;gap:1rem;margin-bottom:1.25rem;}
@media (min-width:400px){.cc-row{flex-direction:row;align-items:flex-end;gap:1.25rem;}}
.cc-group{flex:1;min-width:0;}
.cc-label{display:block;font-size:0.9375rem;font-weight:600;color:var(--text-main,var(--cc-text-main));margin-bottom:0.375rem;}
.cc-symbol{font-family:ui-monospace,monospace;color:var(--text-muted,var(--cc-text-muted));}
.cc-input{width:100%;max-width:100%;padding:0.625rem 0.75rem;font-size:1rem;line-height:1.4;color:var(--text-main,var(--cc-text-main));background:var(--surface-muted,var(--cc-surface-muted));border:1px solid var(--border,var(--cc-border));border-radius:8px;box-sizing:border-box;-webkit-appearance:none;appearance:none;}
.cc-input:focus{outline:0;border-color:var(--primary,var(--cc-primary));box-shadow:0 0 0 3px rgba(37,99,235,.15);}
.cc-input::placeholder{color:var(--text-muted,var(--cc-text-muted));}
.cc-hint{display:block;font-size:0.75rem;color:var(--text-muted,var(--cc-text-muted));margin-top:0.25rem;}
.cc-actions{margin-bottom:1.25rem;}
.cc-btn{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:0.75rem 1.25rem;font-size:1rem;font-weight:600;color:#fff;background:var(--primary,var(--cc-primary));border:0;border-radius:8px;cursor:pointer;transition:background 0.2s,transform 0.1s;}
@media (min-width:400px){.cc-btn{width:auto;min-width:160px;}}
.cc-btn:hover{background:var(--primary-dark,var(--cc-primary-dark));}
.cc-btn:active{transform:scale(0.98);}
.cc-btn:focus{outline:0;box-shadow:0 0 0 3px rgba(37,99,235,.25);}
.cc-outcome{margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--border,var(--cc-border));}
.cc-outcome[hidden]{display:none;}
.cc-result-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:0.5rem 1rem;margin-bottom:0.75rem;}
.cc-result-label{font-size:1rem;color:var(--text-muted,var(--cc-text-muted));}
.cc-result-value{font-size:1.5rem;font-weight:700;color:var(--primary,var(--cc-primary));font-variant-numeric:tabular-nums;}
@media (min-width:480px){.cc-result-value{font-size:1.75rem;}}
.cc-result-body{font-size:0.875rem;color:var(--text-muted,var(--cc-text-muted));line-height:1.5;}
.cc-result-body p{margin:0 0 0.5rem;}
.cc-interpret{margin:0.75rem 0 0;font-size:0.9375rem;color:var(--text-main,var(--cc-text-main));}
.cc-err{padding:0.75rem;font-size:0.875rem;color:var(--text-main,var(--cc-text-main));background:var(--surface-muted,var(--cc-surface-muted));border-radius:8px;border-left:4px solid var(--accent,var(--cc-accent));}
.cc-err[hidden]{display:none;}
.cc-edu{margin-top:2rem;max-width:640px;}
.cc-edu-title{font-size:1.25rem;font-weight:700;margin:0 0 0.75rem;color:var(--text-main,var(--cc-text-main));}
.cc-edu-sub{font-size:1.0625rem;font-weight:600;margin:1.25rem 0 0.5rem;color:var(--text-main,var(--cc-text-main));}
.cc-edu p{margin:0 0 0.75rem;font-size:0.9375rem;line-height:1.6;color:var(--text-main,var(--cc-text-main));}
.cc-edu ul{margin:0 0 0.75rem;padding-left:1.25rem;}
.cc-edu li{margin-bottom:0.25rem;font-size:0.9375rem;line-height:1.5;color:var(--text-main,var(--cc-text-main));}