.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #667eea 0, #764ba2 100%);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #3b82f6);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.core-stats-date{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.core-stat-date{background:white;border-radius:60px;padding:12px 28px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 15px rgba(0,0,0,0.05);border:1px solid var(--gray-200)}.core-stat-icon{width:44px;height:44px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary-color);font-size:1.2rem}.core-stat-info{text-align:left}.core-stat-value{display:block;font-size:1rem;font-weight:600;color:var(--gray-800)}.core-stat-label{font-size:0.7rem;color:var(--gray-500)}.date-tabs{display:flex;gap:12px;margin-bottom:32px;justify-content:center;flex-wrap:wrap}.date-tab{background:transparent;border:none;padding:12px 24px;cursor:pointer;transition:all 0.3s;border-radius:20px;text-align:center;min-width:130px}.date-tab i{font-size:1.2rem;color:var(--gray-400);margin-bottom:6px;display:block}.date-tab span{display:block;font-weight:600;color:var(--gray-600);margin-bottom:4px}.date-tab small{font-size:0.65rem;color:var(--gray-400)}.date-tab.active{background:linear-gradient(135deg, var(--primary-color), var(--primary-dark));box-shadow:0 8px 25px rgba(59,130,246,0.3)}.date-tab.active i,.date-tab.active span,.date-tab.active small{color:white}.panel-card{background:white;border-radius:28px;overflow:hidden;border:1px solid var(--gray-200);box-shadow:0 10px 30px -10px rgba(0,0,0,0.05)}.panel-header{display:flex;align-items:center;gap:10px;padding:18px 24px;background:linear-gradient(135deg, #f8fafc, #fff);border-bottom:1px solid var(--gray-200);font-weight:600;color:var(--gray-700)}.panel-header i{color:var(--primary-color);font-size:1.2rem}.panel-body{padding:24px}.input-group-large{margin-bottom:20px}.input-group-large label{display:block;font-size:0.8rem;font-weight:500;color:var(--gray-600);margin-bottom:8px}.date-input{width:100%;padding:14px 16px;border:1px solid var(--gray-200);border-radius:16px;font-size:0.95rem;transition:all 0.3s}.date-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(59,130,246,0.1)}.input-group{flex:1}.input-group label{display:block;font-size:0.7rem;color:var(--gray-500);margin-bottom:6px}.number-input{width:100%;padding:12px;border:1px solid var(--gray-200);border-radius:12px;font-size:0.9rem;text-align:center}.add-controls{display:flex;gap:16px;margin-bottom:24px;flex-wrap:wrap}.dual-input{display:flex;align-items:center;gap:20px;margin-bottom:24px;flex-wrap:wrap}.dual-input .input-group-large{flex:1;margin-bottom:0}.vs-icon-small{font-size:1.5rem;color:var(--primary-color)}.calculate-btn{width:100%;padding:14px;font-size:1rem;border-radius:40px;margin-bottom:20px}.btn-outline{background:transparent;border:1px solid var(--gray-300);padding:10px 24px;border-radius:40px;font-weight:500;cursor:pointer;transition:all 0.3s;display:inline-flex;align-items:center;gap:8px}.btn-outline:hover{background:var(--gray-100);border-color:var(--primary-color);color:var(--primary-color)}.add-actions{display:flex;gap:12px;margin-bottom:20px}.add-actions .calculate-btn{flex:1;margin-bottom:0}.result-card{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:20px;padding:20px;text-align:center;border:1px solid var(--gray-200)}.result-label{font-size:0.75rem;color:var(--gray-500);margin-bottom:8px}.result-value{font-size:2rem;font-weight:700;color:var(--primary-color);margin-bottom:8px}.result-detail{font-size:0.8rem;color:var(--gray-500)}.age-grid{display:flex;justify-content:center;gap:32px;margin:16px 0;flex-wrap:wrap}.age-item{text-align:center}.age-number{display:block;font-size:1.8rem;font-weight:700;color:var(--primary-color)}.age-unit{font-size:0.7rem;color:var(--gray-500)}.age-zodiac{margin-top:12px;padding:8px;background:var(--gray-100);border-radius:40px;font-size:0.8rem;color:var(--gray-600)}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.8rem}.checkbox-label input{display:none}.checkmark{width:18px;height:18px;border:2px solid var(--gray-400);border-radius:4px;display:inline-block;position:relative;transition:all 0.2s}.checkbox-label input:checked+.checkmark{background:var(--primary-color);border-color:var(--primary-color)}.checkbox-label input:checked+.checkmark::after{content:'\f00c';font-family:'Font Awesome 6 Free';font-weight:900;font-size:10px;color:white;position:absolute;top:50%;left:50%;transform:translate(-50%, -50%)}.diff-options{margin-bottom:20px}.weekend-options{display:flex;gap:20px;margin-bottom:20px;flex-wrap:wrap}.workday-input{display:flex;gap:20px;margin-bottom:20px;flex-wrap:wrap}.workday-input .input-group-large{flex:2;margin-bottom:0}.workday-input .input-group{flex:1}.quick-dates{margin-top:24px}.quick-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}.quick-date-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:10px 20px;border-radius:40px;cursor:pointer;transition:all 0.2s;font-size:0.85rem;display:inline-flex;align-items:center;gap:8px}.quick-date-btn:hover{background:var(--primary-color);border-color:var(--primary-color);color:white}.info-footer{margin-top:32px;background:var(--gray-50);border-radius:28px;padding:24px}.info-footer-header{display:flex;align-items:center;gap:10px;margin-bottom:20px;font-weight:600;color:var(--gray-700)}.info-footer-steps{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px}.step-item{display:flex;gap:14px;align-items:flex-start}.step-number{width:32px;height:32px;background:var(--primary-color);color:white;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}.step-content h4{font-size:0.85rem;margin-bottom:4px}.step-content p{font-size:0.7rem;color:var(--gray-500)}.ad-section{margin:20px 0 40px}.ad-banner{background:linear-gradient(135deg, #f5f5f5, #fff);border:1px solid var(--gray-200);border-radius:16px;padding:20px;text-align:center;position:relative}.ad-label{position:absolute;top:8px;right:12px;font-size:0.6rem;color:var(--gray-400)}@media (max-width:768px){.dual-input{flex-direction:column}.vs-icon-small{display:none}.add-controls{flex-direction:column}.add-actions{flex-direction:column}.workday-input{flex-direction:column}.info-footer-steps{grid-template-columns:1fr}.date-tab{min-width:auto;padding:8px 16px}.date-tab i{font-size:1rem}.date-tab span{font-size:0.8rem}.quick-buttons{justify-content:center}}@media (max-width:480px){.age-grid{gap:16px}.age-number{font-size:1.3rem}}