.stats-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:30px}.stat-card{background:white;border-radius:20px;padding:20px;display:flex;align-items:center;gap:16px;border:1px solid var(--gray-200);transition:all 0.3s}.stat-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.stat-icon{width:50px;height:50px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary-color)}.stat-value{font-size:1.6rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.75rem;color:var(--gray-500)}.input-section{margin-bottom:24px}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:12px}.section-header h3{font-size:1rem;display:flex;align-items:center;gap:8px}.input-actions{display:flex;gap:8px}.input-wrapper{display:flex;align-items:center;background:#1a1a2e;border-radius:20px;padding:4px;border:2px solid var(--gray-300);transition:border-color .3s}.input-wrapper:focus-within{border-color:var(--primary-color)}.input-prefix,.input-suffix{padding:12px 16px;color:var(--gray-400);font-weight:600;font-size:1.1rem}.number-input{flex:1;padding:12px 16px;border:none;background:transparent;color:#e0e0e0;font-size:1.4rem;font-weight:600;font-family:'Fira Code',monospace;text-align:center}.number-input:focus{outline:none}.number-input::placeholder{color:#5a5a7a;font-weight:400}.input-hint{display:flex;gap:24px;margin-top:12px;font-size:0.7rem;color:var(--gray-500)}.language-section{background:var(--gray-50);border-radius:20px;padding:16px 20px;margin-bottom:24px}.language-section h4{font-size:0.85rem;margin-bottom:12px;color:var(--gray-700);display:flex;align-items:center;gap:8px}.language-buttons{display:flex;flex-wrap:wrap;gap:10px}.lang-btn{background:white;border:1px solid var(--gray-200);padding:6px 16px;border-radius:30px;font-size:0.8rem;cursor:pointer;transition:all 0.2s}.lang-btn.active{background:var(--primary-color);color:white;border-color:var(--primary-color)}.lang-btn:hover:not(.active){background:var(--gray-100)}.calc-section{text-align:center;margin:24px 0}.calc-btn{padding:12px 40px;font-size:1rem}.result-section{background:white;border-radius:20px;border:1px solid var(--gray-200);overflow:hidden;margin-bottom:24px;animation:fadeIn 0.3s ease}.result-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:linear-gradient(135deg, var(--gray-50), #fafafa);border-bottom:1px solid var(--gray-200)}.result-header h3{font-size:1rem;display:flex;align-items:center;gap:8px}.result-actions{display:flex;gap:8px}.result-card.primary{background:linear-gradient(135deg, #1a3a2e, #0d2a1e);border-radius:16px;padding:24px 20px;margin:20px;text-align:center}.result-card.primary .result-label{color:var(--gray-400);font-size:0.8rem;margin-bottom:8px}.result-card.primary .result-value{color:#4ade80;font-size:1.6rem;font-weight:700;line-height:1.6;word-break:break-word}.result-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:16px;padding:0 20px 20px}.result-card{background:var(--gray-50);border-radius:16px;padding:16px;text-align:center}.result-card .result-label{font-size:0.7rem;color:var(--gray-500);margin-bottom:6px}.result-card .result-value{font-family:'Fira Code',monospace;font-size:1rem;font-weight:600;color:var(--gray-800)}.detail-section{padding:0 20px 20px}.detail-section h4{font-size:0.85rem;margin-bottom:12px;color:var(--gray-700)}.detail-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:8px}.detail-item{display:flex;justify-content:space-between;padding:8px 12px;background:var(--gray-50);border-radius:8px;font-size:0.8rem}.detail-item .label{color:var(--gray-500)}.detail-item .value{font-weight:500}.reference-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:12px;margin-top:16px}.ref-item{display:flex;flex-direction:column;background:var(--gray-50);border-radius:12px;padding:12px 16px}.ref-label{font-size:0.7rem;color:var(--gray-500)}.ref-value{font-size:0.9rem;font-weight:500;margin-top:4px}.knowledge-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-top:20px}.knowledge-card{background:var(--gray-50);border-radius:16px;padding:20px;text-align:center}.knowledge-card i{font-size:28px;color:var(--primary-color);margin-bottom:12px}.knowledge-card h4{font-size:0.85rem;margin-bottom:8px}.knowledge-card p{font-size:0.75rem;color:var(--gray-500);line-height:1.5}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.stats-grid{grid-template-columns:repeat(2, 1fr)}.result-grid{grid-template-columns:1fr}.detail-grid{grid-template-columns:1fr}.reference-grid{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.input-wrapper{flex-wrap:wrap}.input-prefix,.input-suffix{width:100%;text-align:center}.number-input{font-size:1.1rem}.knowledge-grid{grid-template-columns:1fr}}