/* CSS Block Identical to English Version */
:root{--primary-blue:#0056b3;--secondary-blue:#e0f7fa;--accent-red:#d9534f;--text-dark:#333;--bg-light:#f8f9fa;--border-color:#ddd}body{font-family:'Verdana',sans-serif;line-height:1.7;color:var(--text-dark);margin:0;padding:0;background-color:#f4f7f9}.container{max-width:1000px;margin:40px auto;padding:40px;background-color:#fff;box-shadow:0 4px 20px rgba(0,0,0,0.08);border-radius:8px}h2{color:var(--primary-blue);font-size:30px;margin-bottom:20px;border-bottom:4px solid var(--primary-blue);padding-bottom:15px;text-align:center}h3{color:var(--primary-blue);font-size:20px;border-left:6px solid var(--primary-blue);padding-left:15px;margin-top:40px;margin-bottom:20px;background:linear-gradient(90deg,#f0f7ff 0%,#ffffff 100%);padding-top:8px;padding-bottom:8px}p{margin-bottom:1.5em}.content-image{width:100%;height:auto;border-radius:8px;margin:30px 0;display:block;border:1px solid var(--border-color)}.jis-section{background-color:var(--bg-light);border:1px solid var(--border-color);padding:25px;border-radius:8px;margin:25px 0}.badge{display:inline-block;background-color:var(--primary-blue);color:#fff;padding:2px 12px;border-radius:4px;font-size:12px;font-weight:bold;margin-bottom:10px;text-transform:uppercase}.standards-table-wrapper{overflow-x:auto;margin:20px 0}.standards-table{width:100%;border-collapse:collapse;background:#fff}.standards-table th,.standards-table td{border:1px solid var(--border-color);padding:15px;text-align:center}.standards-table th{background-color:var(--primary-blue);color:white;font-size:14px}.calc-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin:40px 0}.calc-card{background:#ffffff;border:1px solid var(--border-color);border-radius:12px;padding:30px;box-shadow:0 4px 12px rgba(0,0,0,0.05);transition:all 0.3s ease}.calc-card:hover{transform:translateY(-5px);box-shadow:0 8px 24px rgba(0,0,0,0.1)}.calc-card h4{margin-top:0;color:var(--primary-blue);font-size:18px;border-bottom:1px solid var(--secondary-blue);padding-bottom:10px}.input-group{margin-bottom:20px}.input-group label{display:block;font-weight:bold;margin-bottom:8px;font-size:14px;color:#555}.input-wrapper{display:flex;align-items:center}.input-wrapper input{flex:1;padding:12px;border:1px solid #ccc;border-radius:4px;font-size:16px}.unit{width:60px;margin-left:10px;color:#777;font-size:13px;font-weight:bold}.result-box{margin-top:20px;padding:20px;background-color:var(--secondary-blue);border:1px solid #b2ebf2;border-radius:8px;text-align:center}.result-label{font-size:11px;color:#007c91;display:block;text-transform:uppercase;letter-spacing:1px;font-weight:bold}.result-value{font-size:26px;font-weight:bold;color:var(--primary-blue);margin-top:5px}.formula-display{background:#2c3e50;color:#ecf0f1;padding:25px;border-radius:8px;text-align:center;font-family:'Courier New',monospace;margin:25px 0;font-size:1.2em;box-shadow:inset 0 2px 10px rgba(0,0,0,0.2)}.safety-alert{color:#fff;background-color:var(--accent-red);font-weight:bold;padding:20px;border-radius:8px;margin:40px 0;display:flex;align-items:center}.safety-alert::before{content:"⚠️";font-size:30px;margin-right:20px}@media(max-width:768px){.container{padding:20px;margin:10px}.calc-wrapper{grid-template-columns:1fr}h2{font-size:24px}}