:root{--bg: #F0F2F7;--sidebar-bg: #1B3A6B;--sidebar-hover: #264E8F;--sidebar-active:#3369BE;--sidebar-text: rgba(255,255,255,.75);--sidebar-w: 220px;--sidebar-w-collapsed: 56px;--card-bg: #FFFFFF;--text-primary: #111827;--text-secondary: #6B7280;--text-muted: #9CA3AF;--border: #E5E7EB;--accent: #2563EB;--accent-light: rgba(37,99,235,.08);--accent-hover: #1D4ED8;--success: #059669;--success-bg: #ECFDF5;--success-border:#A7F3D0;--warning: #D97706;--warning-bg: #FFFBEB;--warning-border:#FCD34D;--error: #EF4444;--error-bg: #FEF2F2;--error-border: #FECACA;--shadow: 0 1px 3px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.06);--shadow-sm: 0 1px 2px rgba(0,0,0,.06);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--bottom-nav-h: 60px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Noto Sans SC,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text-primary);min-height:100vh;-webkit-font-smoothing:antialiased}.app-shell{display:flex;width:100%;min-height:100vh}.sidebar{width:var(--sidebar-w);min-height:100vh;background:var(--sidebar-bg);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:width .25s cubic-bezier(.4,0,.2,1);overflow:hidden}.sidebar.collapsed{width:var(--sidebar-w-collapsed)}.sidebar-brand{padding:20px 16px 18px;border-bottom:1px solid rgba(255,255,255,.1);min-height:70px;display:flex;align-items:center;overflow:hidden;white-space:nowrap}.sidebar-brand h1{font-size:15px;font-weight:700;color:#fff;letter-spacing:-.3px;line-height:1.3}.sidebar-brand p{font-size:10px;color:#ffffff73;margin-top:3px}.brand-icon{font-size:20px;width:100%;text-align:center}.sidebar-toggle{position:absolute;top:22px;right:8px;width:26px;height:26px;border-radius:50%;border:1.5px solid rgba(255,255,255,.2);background:#ffffff14;color:#fff9;font-size:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s,color .15s;z-index:10}.sidebar-toggle:hover{background:#ffffff2e;color:#fff;border-color:#fff6}.sidebar-nav{flex:1;padding:10px 0;overflow:hidden;white-space:nowrap}.sidebar-section-label{font-size:10px;font-weight:600;color:#ffffff4d;letter-spacing:.08em;text-transform:uppercase;padding:8px 16px 6px}.sidebar-item{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;border:none;background:transparent;width:100%;text-align:left;font-family:inherit;font-size:13px;font-weight:500;color:var(--sidebar-text);position:relative;transition:background .15s,color .15s;white-space:nowrap}.sidebar-item:hover{background:var(--sidebar-hover);color:#fff}.sidebar-item.active{background:var(--sidebar-active);color:#fff}.sidebar-item.active:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:#60a5fa;border-radius:0 2px 2px 0}.sidebar-icon{font-size:16px;width:22px;text-align:center;flex-shrink:0}.sidebar-badge{margin-left:auto;font-size:10px;background:#ffffff26;color:#ffffffb3;border-radius:10px;padding:1px 6px;flex-shrink:0}.sidebar-changelog{padding:8px 10px;overflow:hidden;white-space:nowrap}.changelog-btn{display:flex;align-items:center;gap:6px;background:none;border:none;cursor:pointer;color:#ffffff52;font-size:11px;font-family:inherit;padding:4px;border-radius:4px;transition:color .2s;letter-spacing:.02em}.changelog-btn:hover{color:#ffffffa6}.sidebar-footer{padding:14px 16px;border-top:1px solid rgba(255,255,255,.08);font-size:11px;color:#ffffff47;overflow:hidden;white-space:nowrap}.footer-collapsed{font-size:13px}.main-content{margin-left:var(--sidebar-w);flex:1;min-height:100vh;transition:margin-left .25s cubic-bezier(.4,0,.2,1)}.app-shell.sidebar-collapsed .main-content{margin-left:var(--sidebar-w-collapsed)}.mobile-topbar,.mobile-footer{display:none}.mobile-topbar{display:flex;align-items:center;justify-content:space-between;background:var(--sidebar-bg);color:#fff;padding:10px 16px;position:sticky;top:0;z-index:150;box-shadow:0 1px 4px #00000026;flex-shrink:0}.mobile-topbar-title{font-weight:700;font-size:14px}.mobile-topbar-ver{font-size:11px;color:#ffffff80}.mobile-footer{text-align:center;font-size:11px;color:#c4c9d4;padding:12px 16px calc(var(--bottom-nav-h) + 12px);background:var(--bg)}.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:var(--bottom-nav-h);background:#fff;border-top:1px solid var(--border);z-index:200;box-shadow:0 -2px 12px #00000014;padding-bottom:env(safe-area-inset-bottom,0)}.bottom-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;border:none;background:transparent;cursor:pointer;font-family:inherit;color:var(--text-secondary);transition:color .15s;min-width:0;padding:6px 4px}.bottom-nav-item.active{color:var(--accent)}.bottom-nav-item:active{opacity:.7}.bottom-nav-icon{font-size:18px;line-height:1}.bottom-nav-label{font-size:10px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:64px}.tool-container{display:none;animation:fadeUp .25s ease-out}.tool-container.active{display:block}.tool-header{background:var(--card-bg);border-bottom:1px solid var(--border);padding:18px 24px;display:flex;align-items:center;gap:12px}.tool-header-icon{font-size:22px}.tool-header-text h2{font-size:16px;font-weight:700;color:var(--text-primary)}.tool-header-text p{font-size:12px;color:var(--text-secondary);margin-top:2px}.card{background:var(--card-bg);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow);margin:16px}@media (max-width: 640px){.card{margin:12px;border-radius:var(--radius-md)}}.card-title{font-size:13.5px;font-weight:600;color:var(--text-primary);margin-bottom:16px;display:flex;align-items:center;gap:8px}.card-title:before{content:"";width:4px;height:16px;background:var(--accent);border-radius:2px;flex-shrink:0}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}.input-grid .input-full{grid-column:1 / -1}.input-group{display:flex;flex-direction:column;gap:5px}.input-label{font-size:12px;font-weight:500;color:var(--text-secondary)}.input-wrap{position:relative;display:flex;align-items:center}.input-field{width:100%;height:42px;padding:0 38px 0 12px;font-size:14px;font-family:inherit;font-variant-numeric:tabular-nums;color:var(--text-primary);background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius-sm);outline:none;transition:border-color .15s,box-shadow .15s;-webkit-appearance:none;-moz-appearance:none;appearance:none}.input-field::placeholder{color:#c9cdd4}.input-field:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--accent-light)}.input-field.has-error{border-color:var(--error)}.input-suffix{position:absolute;right:12px;font-size:12px;color:var(--text-secondary);pointer-events:none;font-weight:500}select.input-field{padding-right:32px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;cursor:pointer}.btn{height:42px;padding:0 16px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:600;font-family:inherit;cursor:pointer;border:none;transition:all .15s;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:#fff;color:var(--accent);border:1.5px solid var(--accent)}.btn-secondary:hover{background:var(--accent-light)}.btn-ghost{background:#fff;color:var(--text-secondary);border:1.5px solid var(--border)}.btn-ghost:hover{background:var(--bg);color:var(--text-primary)}.btn-row{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}@media (max-width: 640px){.btn-row{flex-direction:column}.btn{width:100%;justify-content:center}}.result-box{background:var(--success-bg);border:1.5px solid var(--success-border);border-radius:var(--radius-md);padding:14px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:14px}.result-label{font-size:13px;color:#065f46;font-weight:500}.result-value{font-size:24px;font-weight:700;color:var(--success);font-variant-numeric:tabular-nums}.result-value.bump{animation:bump .25s ease-out}@keyframes bump{0%{transform:scale(1)}50%{transform:scale(1.06)}to{transform:scale(1)}}.alert{padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;display:flex;align-items:center;gap:6px;margin-bottom:12px;flex-wrap:wrap}.alert-ok{background:var(--success-bg);color:#065f46;border:1px solid var(--success-border)}.alert-warn{background:var(--warning-bg);color:#92400e;border:1px solid var(--warning-border)}.alert-error{background:var(--error-bg);color:#991b1b;border:1px solid var(--error-border)}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}@media (max-width: 640px){.detail-grid{grid-template-columns:1fr}}.detail-item{background:var(--bg);border-radius:var(--radius-sm);padding:10px 14px}.detail-item .label{font-size:11px;color:var(--text-secondary);margin-bottom:4px}.detail-item .value{font-size:14px;font-weight:600;color:var(--text-primary);font-variant-numeric:tabular-nums}.periods-list{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.period-input{width:100%;height:38px;padding:0 36px 0 10px;font-size:13px;font-family:inherit;font-variant-numeric:tabular-nums;color:var(--text-primary);background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius-sm);outline:none;transition:border-color .15s,box-shadow .15s,background .15s;-webkit-appearance:none;-moz-appearance:none;appearance:none}.period-input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--accent-light)}.period-pct-suffix{position:absolute;right:10px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--text-secondary);pointer-events:none}.period-input-wrap{position:relative;flex:1}.summary-box{background:var(--bg);border-radius:var(--radius-sm);padding:14px 16px;margin-top:12px}.summary-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px}.summary-row+.summary-row{margin-top:6px;padding-top:6px;border-top:1px solid var(--border)}.summary-label{font-size:12px;color:var(--text-secondary)}.summary-value{font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.contract-layout{display:grid;grid-template-columns:1fr 1.6fr;gap:16px;padding:16px}.contract-total-card,.contract-period-card{background:var(--card-bg);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column}.both-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width: 900px){.sidebar{width:var(--sidebar-w-collapsed)}.sidebar-brand h1,.sidebar-brand p,.sidebar-section-label,.sidebar-badge,.changelog-btn{display:none}.sidebar-brand{padding:20px 0 18px;justify-content:center}.sidebar-item{padding:10px 0;justify-content:center}.sidebar-changelog{padding:8px 0;display:flex;justify-content:center}.sidebar-footer{padding:14px 0;text-align:center}.main-content{margin-left:var(--sidebar-w-collapsed)}}@media (max-width: 640px){.sidebar{display:none}.main-content{margin-left:0}.mobile-topbar{display:flex}.mobile-footer{display:block}.bottom-nav{display:flex}.contract-layout{grid-template-columns:1fr;padding:12px;gap:12px}.input-grid{grid-template-columns:1fr}.input-grid .input-full{grid-column:1}.result-box{flex-direction:column;align-items:flex-start}.result-value{font-size:22px}.both-grid{grid-template-columns:1fr}}