.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, #d1fae5, #a7f3d0);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:#10b981}.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;gap:12px;background:white;border:2px solid var(--gray-200);border-radius:16px;padding:4px 4px 4px 16px;transition:all 0.3s}.input-wrapper:focus-within{border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(59,130,246,0.1)}.input-currency{font-size:1.4rem;font-weight:700;color:var(--gray-600)}.number-input{flex:1;padding:14px 8px;border:none;font-size:1.2rem;font-weight:500;background:transparent;font-family:'Fira Code',monospace}.number-input:focus{outline:none}.convert-btn{padding:12px 28px;border-radius:12px;font-size:0.95rem}.input-hint{display:flex;gap:24px;margin-top:12px;font-size:0.75rem;color:var(--gray-500)}.input-hint i{margin-right:4px}.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, #f0fdf4, #ecfdf5);border-bottom:1px solid #bbf7d0}.result-title{font-size:1rem;display:flex;align-items:center;gap:8px;font-weight:600;color:#065f46}.result-actions{display:flex;gap:8px}.result-content{padding:24px}.number-display{text-align:center;padding:16px;background:var(--gray-50);border-radius:16px;margin-bottom:20px}.number-value{font-family:'Fira Code',monospace;font-size:2rem;font-weight:700;color:var(--gray-800)}.words-display,.cny-display{margin-bottom:20px;padding:16px;background:#f0fdf4;border-radius:16px;border:1px solid #bbf7d0}.words-label{font-size:0.7rem;color:var(--gray-500);margin-bottom:8px;text-transform:uppercase;letter-spacing:1px}.words-value{font-size:1.1rem;font-weight:500;color:var(--gray-800);line-height:1.6;word-break:break-word}.cny-value{color:#065f46}.detail-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:12px;padding-top:16px;border-top:1px solid var(--gray-200)}.detail-item{text-align:center}.detail-label{display:block;font-size:0.65rem;color:var(--gray-400);margin-bottom:4px}.detail-value{font-family:'Fira Code',monospace;font-size:0.9rem;font-weight:600;color:var(--gray-700)}.options-section{background:var(--gray-50);border-radius:20px;padding:20px;margin-bottom:24px}.options-header{font-size:0.85rem;font-weight:600;margin-bottom:16px;color:var(--gray-700)}.options-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:12px}.option-group .checkbox-label{display:flex;align-items:center;gap:10px;font-size:0.85rem;cursor:pointer}.quick-amounts{margin-bottom:24px}.amount-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}.amount-btn{background:var(--gray-100);border:1px solid var(--gray-300);padding:8px 20px;border-radius:40px;cursor:pointer;font-size:0.85rem;transition:all 0.2s}.amount-btn:hover{background:var(--primary-color);color:white;border-color:var(--primary-color)}.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:#10b981;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)}.options-grid{grid-template-columns:1fr}.detail-grid{grid-template-columns:repeat(2, 1fr)}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.input-wrapper{flex-wrap:wrap;padding:12px}.convert-btn{width:100%}.amount-buttons{justify-content:center}.knowledge-grid{grid-template-columns:1fr}}