:root{--bg-primary:#ebeae4;--bg-secondary:#e0dfd8;--text-primary:#111;--text-secondary:#444;--text-muted:#777;--accent-red:#e63946;--accent-blue:#1d3557;--info:#3a86ff;--success:#111;--warning:#ffbe0b;--error:#e63946;--border-color:#111;--font-ui:"Pretendard Variable", "Pretendard", sans-serif;--font-mono:"Space Mono", monospace;--header-height:70px;--sidebar-width:300px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-ui);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;line-height:1.5}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}h1,h2,h3,h4{letter-spacing:-.02em;text-transform:uppercase;font-weight:800}.header{height:var(--header-height);background:var(--bg-primary);border-bottom:2px solid var(--border-color);z-index:100;position:fixed;top:0;left:0;right:0}.header-inner{justify-content:space-between;align-items:center;height:100%;padding:0 24px;display:flex}.header-left{align-items:center;gap:16px;display:flex}.header-menu-button{background:0 0;border:0;font-size:1.4rem;line-height:1;display:none}.logo{font-family:var(--font-mono);letter-spacing:-1px;color:inherit;align-items:baseline;font-size:1.8rem;font-weight:700;text-decoration:none;display:flex}.logo:focus-visible{outline:3px solid var(--accent-blue);outline-offset:4px}.logo-n,.logo-n2{color:var(--text-primary)}.logo-o,.logo-o2{color:var(--accent-red)}.logo-a{margin:0 4px;font-size:1.2rem}#top{scroll-margin-top:0}.sidebar{top:var(--header-height);width:var(--sidebar-width);height:calc(100vh - var(--header-height));background:var(--bg-primary);border-right:2px solid var(--border-color);z-index:90;padding:32px 0;position:fixed;left:0;overflow-y:auto}.sidebar-title{color:var(--text-primary);border-bottom:2px solid var(--border-color);margin-bottom:24px;padding:0 32px 16px;font-size:1.4rem;font-weight:800;display:block}.nav-group{margin-bottom:32px}.nav-group-title{color:var(--text-secondary);padding:0 32px 12px;font-size:1.15rem;font-weight:700;display:block}.nav-item{color:var(--text-primary);border-left:4px solid #0000;align-items:center;padding:10px 32px;font-size:1.05rem;font-weight:500;transition:all .2s;display:flex}.nav-item:hover{background:var(--bg-secondary);font-weight:600}.nav-item.active{border-left-color:var(--accent-red);background:var(--bg-secondary);color:var(--accent-red);font-weight:700}.calc-item{color:inherit;border-bottom:1px dashed var(--border-color);border:1px solid var(--border-color);background:#fff;border-radius:8px;flex-direction:column;margin-bottom:12px;padding:20px;text-decoration:none;transition:all .2s;display:flex;box-shadow:0 2px 8px #0000000a}.calc-item:last-child{margin-bottom:0}.calc-item:hover{border-color:var(--primary-color);transform:translateY(-2px);box-shadow:0 6px 12px #00000014}.calc-item-content{align-items:flex-start;gap:16px;margin-bottom:16px;display:flex}.calc-item-icon{background:var(--bg-color);border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;font-size:1.8rem;display:flex}.calc-item-text{flex:1}.calc-item-title{color:var(--text-primary);margin-bottom:6px;font-size:1.1rem;font-weight:700}.calc-item-desc{color:var(--text-secondary);font-size:.85rem;line-height:1.4}.calc-item-action{justify-content:flex-end;display:flex}.calc-item-btn{background:var(--primary-color);color:#fff;border-radius:20px;padding:8px 16px;font-size:.9rem;font-weight:600;transition:background .2s;display:inline-block}.calc-item:hover .calc-item-btn{background:var(--accent-blue)}.main-content{margin-left:var(--sidebar-width);margin-top:var(--header-height);min-height:calc(100vh - var(--header-height));flex-direction:column;padding:64px 56px;display:flex}.container{flex:1;width:100%;max-width:760px;margin:0 auto}.home-hero{border-bottom:2px solid var(--border-color);margin-bottom:40px;padding-bottom:40px}.home-title{margin-bottom:16px;font-size:3rem;line-height:1.1}.home-subtitle{font-family:var(--font-mono);color:var(--text-secondary);font-size:1rem}.home-section-title{border-bottom:1px solid var(--text-primary);margin-bottom:24px;padding-bottom:8px;font-size:1.5rem}.home-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;display:grid}.home-card{border:2px solid var(--border-color);background:var(--bg-primary);box-shadow:4px 4px 0 var(--border-color);padding:24px;transition:transform .1s,box-shadow .1s;position:relative}.home-card:hover{box-shadow:2px 2px 0 var(--border-color);transform:translate(2px,2px)}.home-card-icon{margin-bottom:16px;font-size:2rem;display:block}.home-card-title{margin-bottom:8px;font-size:1.2rem}.home-card-desc{color:var(--text-secondary);font-size:.9rem}.calc-header{margin-bottom:40px}.calc-breadcrumb{font-family:var(--font-mono);color:var(--text-muted);margin-bottom:12px;font-size:.8rem}.calc-title{margin-bottom:12px;font-size:2.5rem}.calc-description{color:var(--text-secondary);border-left:4px solid var(--border-color);padding-left:16px;font-size:1rem}.calc-card{border:2px solid var(--border-color);background:var(--bg-primary);box-shadow:8px 8px 0 var(--border-color);margin-bottom:32px;padding:32px}#app{flex-direction:column;display:flex}.calc-container{order:1}.calc-results{order:2;margin-top:32px}.bottom-area{order:3;margin-top:40px}.calc-card-title{border-bottom:2px dashed var(--border-color);margin-bottom:24px;padding-bottom:12px;font-size:1.25rem}.form-group{margin-bottom:24px}.form-label{text-transform:uppercase;margin-bottom:8px;font-size:.85rem;font-weight:700;display:block}.form-row{grid-template-columns:1fr 1fr;gap:24px;display:grid}.input-wrapper{position:relative}.form-input{border:none;border-bottom:2px solid var(--border-color);width:100%;font-family:var(--font-mono);color:var(--text-primary);background:0 0;border-radius:0;outline:none;padding:12px 0;font-size:1.2rem}.form-input:focus{border-bottom-color:var(--accent-red)}.form-input.has-suffix{padding-right:40px}.input-suffix{color:var(--text-muted);font-weight:700;position:absolute;top:14px;right:0}.form-select{border:none;border-bottom:2px solid var(--border-color);width:100%;font-family:var(--font-ui);appearance:none;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23111111' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 6l3.5 4 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solid var(--border-color);border-radius:50%;width:20px;height:20px;position:absolute;top:50%;transform:translateY(-50%)}.result-main:before{border-left:none;left:-12px}.result-main:after{border-right:none;right:-12px}.result-main-label{font-family:var(--font-mono);text-transform:uppercase;color:var(--text-secondary);margin-bottom:12px;font-weight:700}.result-main-value{font-family:var(--font-mono);color:var(--accent-red);font-size:3rem;font-weight:700;line-height:1}.result-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;margin-bottom:24px;display:grid}.result-card{border:2px solid var(--border-color);text-align:center;background:#fff;padding:16px}.result-card-label{color:var(--text-secondary);text-transform:uppercase;margin-bottom:8px;font-size:.85rem;font-weight:700}.result-card-value{font-family:var(--font-mono);color:var(--text-primary);font-size:1.4rem;font-weight:700}.result-card-sub{color:var(--text-muted);margin-top:4px;font-size:.8rem}.result-breakdown{border:2px solid var(--border-color);background:#fff;margin-bottom:16px;padding:24px}.result-breakdown-title{border-bottom:2px dashed var(--border-color);margin-bottom:16px;padding-bottom:12px;font-size:1.1rem;font-weight:800}.result-list{margin:0;padding:0;list-style:none}.result-list-item{border-bottom:1px dashed var(--border-color);font-family:var(--font-mono);justify-content:space-between;padding:10px 0;font-size:.95rem;display:flex}.result-list-item:last-child{border-bottom:none}.result-list-item span:first-child{color:var(--text-secondary)}.result-list-item span:last-child{color:var(--text-primary);font-weight:700}.result-info{border:2px solid var(--border-color);border-left:6px solid var(--accent-blue);color:var(--text-secondary);background:#fff;margin-top:24px;padding:16px;font-size:.9rem}.ad-space{margin:40px 0 24px}.related-section{border-top:2px solid var(--border-color);margin-top:32px;padding-top:24px}.related-title{text-transform:uppercase;margin-bottom:16px;font-size:1.1rem;font-weight:800}.related-grid{flex-wrap:wrap;gap:12px;display:flex}.related-card{border:2px solid var(--border-color);background:var(--bg-primary);align-items:center;padding:12px 16px;font-size:.95rem;font-weight:700;transition:background .1s,transform .1s,box-shadow .1s;display:inline-flex}.related-card:hover{box-shadow:4px 4px 0 var(--border-color);background:#fff;transform:translate(-2px,-2px)}.related-card-icon{margin-right:8px;font-size:1.1rem}.footer{text-align:center;font-family:var(--font-mono);color:var(--text-muted);margin-top:auto;padding:40px 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var(--border-color);background:var(--text-primary);min-height:42px;color:var(--bg-primary);justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.image-workbench-head span:last-child{color:#a7e8bd}.image-workbench-grid{grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);align-items:start;display:grid}.image-preview-panel{border-right:2px solid var(--border-color);flex-direction:column;gap:14px;padding:28px;display:flex}.image-preview-panel.is-empty{min-height:0}.image-preview-panel.is-loaded{min-height:clamp(420px,58dvh,610px)}.image-dropzone{border:2px dashed var(--border-color);text-align:center;cursor:pointer;background:#ffffff47;flex-direction:column;flex:none;justify-content:center;align-items:center;gap:8px;width:100%;min-height:clamp(280px,32dvh,360px);transition:background .15s,transform .15s;display:flex}.image-local-strip{border-top:1px dashed var(--border-color);margin:0 0 2px;padding:2px 0 0;display:grid}.image-local-row{border-bottom:1px 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