.eetc-widget{max-width:900px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
.eetc-header{text-align:center;margin-bottom:2rem}
.eetc-title{color:#111827;font-size:2rem;line-height:1.2;margin:0 0 .5rem;font-weight:800}
.eetc-subtitle{color:#6b7280;font-size:1rem;margin:0 auto;max-width:640px}

.eetc-banner{background:#4f46e5;color:#fff;border-radius:16px;padding:1.25rem;text-align:center;margin-bottom:1.25rem}
.eetc-banner-title{font-weight:700;margin-bottom:.25rem}
.eetc-banner-value{font-size:2rem;font-weight:800;letter-spacing:.06em}
.eetc-banner-note{opacity:.9;font-size:.85rem}

.eetc-card{background:#fff;border-radius:16px;box-shadow:0 10px 25px rgba(0,0,0,.08);padding:1.5rem;margin-bottom:1.5rem}

.eetc-toggle{display:flex;gap:.5rem;justify-content:center;margin-bottom:1rem;background:#f1f5f9;border-radius:10px;padding:.25rem}
.eetc-toggle-btn{padding:.6rem 1rem;border:none;background:transparent;border-radius:8px;font-weight:700;color:#64748b;cursor:pointer}
.eetc-toggle-btn.eetc-active{background:#4f46e5;color:#fff}

.eetc-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.eetc-side{}
.eetc-label{display:block;font-weight:600;color:#374151;margin-bottom:.5rem}
.eetc-input{width:100%;padding:.75rem;border:2px solid #d1d5db;border-radius:8px;font-size:1rem;transition:border-color .2s}
.eetc-input:focus{outline:none;border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.eetc-help{color:#6b7280;font-size:.85rem;margin-top:.25rem}

.eetc-result{background:#eef2ff;border-radius:12px;padding:1rem}
.eetc-result-title{color:#3730a3;font-size:1.1rem;margin:.25rem 0 .75rem;font-weight:700}
.eetc-result-area{font-size:1rem;color:#111827}
.eetc-result-area .eetc-row{display:flex;justify-content:space-between;gap:.5rem;padding:.5rem 0;border-bottom:1px dashed #e5e7eb}
.eetc-result-area .eetc-row:last-child{border-bottom:none}
.eetc-key{color:#475569}
.eetc-val{font-weight:700;color:#4f46e5}

.eetc-section-title{color:#111827;font-size:1.25rem;font-weight:700;margin:0 0 1rem}
.eetc-content{color:#374151;line-height:1.7;font-size:1rem}

@media (max-width:768px){
  .eetc-grid{grid-template-columns:1fr}
  .eetc-widget{padding:0 1rem}
}