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1.25rem;font-size:1rem;border:2px dashed var(--warm-white-light);border-radius:10px;background:var(--warm-white);color:var(--primary-dark);cursor:pointer;width:100%;box-sizing:border-box;margin-bottom:.5rem;transition:all .2s ease}form input[type=file]:hover,form input[type=file]:focus{border-color:var(--primary-highlight);border-style:solid;transform:translateY(-1px)}form input[type=file]::-webkit-file-upload-button,form input[type=file]::file-selector-button{background:linear-gradient(135deg,var(--primary-highlight) 0%,var(--primary-dark) 100%);color:var(--text-light);border:none;padding:.5rem 1rem;border-radius:6px;font-weight:600;margin-right:.75rem;cursor:pointer;transition:all .2s ease;font-size:.95rem}button[type=submit],.export-btn{background:linear-gradient(135deg,var(--primary-highlight) 0%,var(--primary-dark) 100%);color:var(--text-light);font-weight:700;padding:1rem 1.5rem;border:none;border-radius:10px;font-size:1.05rem;box-shadow:0 4px 15px #22225440;cursor:pointer;transition:all .2s ease;margin-top:1rem;width:100%}button[type=submit]:hover:not(:disabled),.export-btn:hover{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary-highlight) 100%);transform:translateY(-2px);box-shadow:0 6px 20px #22225459}button[type=submit]:disabled{background:var(--warm-white-light);color:var(--muted);cursor:not-allowed}.export-btn{margin-top:0;width:auto;padding:.75rem 2rem}.task-block{background:var(--warm-white);border:1px solid var(--warm-white-light);border-radius:8px;padding:1.25rem 1.5rem;margin-bottom:1.25rem;color:var(--primary-dark);font-size:1rem;line-height:1.6;box-shadow:var(--card-shadow);transition:box-shadow .2s ease}.task-block:hover{box-shadow:var(--card-shadow-hover)}.task-header{font-weight:700;font-size:1.1rem;margin-bottom:.4rem;color:var(--primary-dark)}.task-effort{font-style:italic;color:var(--muted);margin-bottom:.75rem}.task-block ul{list-style:disc inside;padding-left:.25rem;margin:.25rem 0 .5rem}.task-block li{line-height:1.45;margin-bottom:.35rem}#output p,#output b{color:var(--primary-dark);font-weight:600;font-size:1.05rem;margin-bottom:1rem;text-align:center}#output pre{background:var(--warm-white-light);border-radius:10px;padding:1.25rem;overflow-x:auto;font-size:.9rem;color:var(--text-dark);border:1px solid var(--warm-white-light);line-height:1.5;margin:1rem 0}@media (max-width: 1024px){.tools-layout{flex-direction:column}.output-section{max-height:none;overflow:visible}}@media (max-width: 768px){.container.tools{padding:1rem}.task-block{padding:1.25rem;font-size:.95rem}form input[type=text],form select,form input[type=file]{padding:.875rem 1rem;font-size:.95rem}button[type=submit],.export-btn{font-size:1rem;padding:.875rem 1.25rem}}@media (max-width: 480px){.container.tools{margin:1rem auto;padding:1rem}}:root{--primary-dark: #213342;--primary-highlight: #4E6F8A;--warm-white-light: #ece8e4;--text-dark: #1e293b;--text-light: #fdfcfb}.login{max-width:420px;margin:80px auto;padding:32px 28px;background:var(--warm-white);border-radius:16px;box-shadow:0 2px 16px #00000012,0 1.5px 3px #0000000d;font-family:Inter,Segoe UI,sans-serif}.login h2{margin-top:0;margin-bottom:24px;font-size:2rem;color:var(--primary-dark);text-align:center}.error-banner{background:var(--accent);border:1px solid var(--primary-highlight);color:var(--primary-dark);padding:12px 16px;border-radius:8px;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;font-size:.95rem}.error-banner button{background:none;border:none;color:var(--primary-dark);font-weight:700;font-size:1.2rem;cursor:pointer;padding:0}.login form{display:flex;flex-direction:column;gap:20px}.login form>div{display:flex;flex-direction:column}.login label{font-weight:600;color:var(--primary-highlight);margin-bottom:6px;font-size:.95rem}.login input[type=text],.login input[type=password]{padding:10px 12px;font-size:1rem;border:1.6px solid var(--warm-white-light);border-radius:6px;background:var(--warm-white);transition:border-color .2s,box-shadow .2s}.login input:focus{border-color:var(--primary-highlight);box-shadow:0 0 0 3px #4e6f8a26;outline:none}.login button[type=submit]{width:100%;padding:12px 0;font-size:1.05rem;font-weight:600;color:var(--text-light);border:none;border-radius:8px;background:var(--primary-dark);box-shadow:0 2px 8px #4e6f8a26;cursor:pointer;transition:all .2s ease-in-out;letter-spacing:.03em}.login button[type=submit]:hover{background:linear-gradient(90deg,var(--primary-dark),var(--primary-highlight));transform:translateY(-1px)}.admin-panel{max-width:600px;margin:2rem auto;padding:2rem;background:#f9f9f9;border-radius:12px;box-shadow:0 0 8px #0000001a;font-family:Segoe UI,sans-serif}.admin-panel h2{text-align:center;margin-bottom:1.5rem}.admin-section{margin-bottom:2rem}.admin-section h3{margin-bottom:.75rem;font-size:1.1rem;border-bottom:1px solid #ddd;padding-bottom:4px}.admin-section input{display:block;width:100%;padding:8px 10px;margin-bottom:.75rem;font-size:1rem;border-radius:6px;border:1px solid #ccc}.admin-section button{padding:8px 16px;font-size:.95rem;background-color:#007bff;color:#fff;border:none;border-radius:6px;cursor:pointer}.admin-section button:hover{background-color:#0056b3}.status{background-color:#fff3cd;color:#856404;border:1px solid #ffeeba;border-radius:6px;padding:10px;margin-bottom:1rem;font-size:.95rem}ul{list-style:none;padding-left:0}li{background:#fff;padding:10px 12px;border:1px solid #ddd;border-radius:6px;display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}li button{background-color:#dc3545;font-size:.85rem;padding:6px 12px}li button:hover{background-color:#b02a37}:root{--primary-dark: #213342;--primary-highlight: #4e6f8a;--warm-white: #fdfcfb;--warm-white-light: #ece8e4;--accent: #ffe6cc;--text-dark: #1e293b;--text-light: #fdfcfb;--muted: #64748b;--warning-bg: #fff8dc;--warning-text: #aa8800;--wizard-gap: 4rem}.auto-grading-wizard{max-width:900px;margin:0 auto;padding:24px}.auto-grading-wizard .wizard-content{display:grid;grid-template-columns:55% minmax(400px,45%);column-gap:var(--wizard-gap);align-items:start;margin-top:1.5rem}.auto-grading-wizard .form-column{display:flex;flex-direction:column;padding-right:1rem;width:100%;min-width:0}.auto-grading-wizard .right-column{display:flex;flex-direction:column;gap:2rem}.auto-grading-wizard .btn{padding:8px 18px;font-size:16px;font-weight:600;border:1px solid var(--warm-white-light);border-radius:5px;background:var(--warm-white-light);color:var(--text-dark);cursor:pointer;transition:background .2s}.auto-grading-wizard .btn.primary{background:var(--primary-dark);color:var(--text-light);border:none}.auto-grading-wizard .btn.primary:hover{background:var(--primary-highlight)}.auto-grading-wizard .btn:disabled{background:var(--warm-white);color:var(--text-dark);cursor:not-allowed}.auto-grading-wizard label{display:block;margin-bottom:6px;font-weight:600;color:var(--primary-highlight)}.auto-grading-wizard .text-input,.auto-grading-wizard select{box-sizing:border-box;width:100%;padding:10px 12px;font-size:1rem;border:1.6px solid var(--warm-white-light);border-radius:6px;background:var(--warm-white);outline:none;transition:border-color .2s,box-shadow .2s}.auto-grading-wizard .text-input:focus,.auto-grading-wizard select:focus{border-color:var(--primary-highlight);box-shadow:0 0 0 3px #4e6f8a26;transform:translateY(-1px)}.auto-grading-wizard .input-group{margin-bottom:1.5rem}.auto-grading-wizard .file-input-wrapper{display:flex;align-items:center;padding:1rem;margin-bottom:1rem;border:2px dashed var(--warm-white-light);border-radius:.5rem;transition:border-color .2s}.auto-grading-wizard .file-input-wrapper.has-file{border-style:solid;border-color:var(--primary-dark)}.auto-grading-wizard .file-input-button{padding:.5rem 1rem;border:none;border-radius:.375rem;background:var(--primary-dark);color:var(--text-light);cursor:pointer;transition:background .2s}.auto-grading-wizard .file-input-button:hover{background:var(--primary-highlight)}.auto-grading-wizard .file-input-filename{margin-left:1rem;color:var(--text-dark)}.auto-grading-wizard .file-input-input{display:none}.auto-grading-wizard .templates-section{position:relative}.auto-grading-wizard .template-dropdown{position:relative;width:100%}.auto-grading-wizard .template-dropdown-trigger{display:flex;align-items:center;justify-content:space-between;width:100%;padding:12px 16px;border:1px solid var(--warm-white-light);border-radius:8px;background:var(--warm-white);color:var(--text-dark);font-weight:500;cursor:pointer;transition:all .2s ease;list-style:none}.auto-grading-wizard .template-dropdown-trigger:hover{background:var(--warm-white-light);border-color:var(--primary-highlight)}.auto-grading-wizard .template-dropdown-trigger::-webkit-details-marker{display:none}.auto-grading-wizard .dropdown-icon{transition:transform .2s ease;color:var(--primary-highlight)}.auto-grading-wizard .template-dropdown[open] .dropdown-icon{transform:rotate(180deg)}.auto-grading-wizard .template-dropdown-content{position:absolute;top:100%;left:0;right:0;z-index:10;margin-top:4px;padding:8px;background:var(--warm-white);border:1px solid var(--warm-white-light);border-radius:8px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.auto-grading-wizard .template-link{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;margin-bottom:4px;border-radius:6px;background:transparent;color:var(--text-dark);text-decoration:none;transition:background .2s ease}.auto-grading-wizard .template-link:hover{background:var(--warm-white-light);color:var(--primary-dark)}.auto-grading-wizard .template-link:last-child{margin-bottom:0}.auto-grading-wizard .template-link svg{color:var(--primary-highlight);transition:color .2s ease}.auto-grading-wizard .template-link:hover svg{color:var(--primary-dark)}.auto-grading-wizard .validation-section{display:flex;flex-direction:column;gap:1rem}.auto-grading-wizard .validation-section h2{margin:0;color:var(--primary-dark);font-size:1.5rem}.auto-grading-wizard .validation-actions,.auto-grading-wizard .validation-buttons{display:flex;flex-direction:column;gap:.75rem}.auto-grading-wizard .validation-buttons .btn{width:100%}.auto-grading-wizard .validation-feedback{padding:1.5rem;border-radius:8px;border:1px solid var(--warning-text);background:var(--warning-bg);color:var(--warning-text);box-shadow:0 2px 8px #2222540d}.auto-grading-wizard .validation-feedback h3{margin:0 0 1rem;font-size:1.25rem;color:var(--warning-text)}.auto-grading-wizard .success-container{display:flex;align-items:center;justify-content:center;padding:2rem;background:var(--warning-bg);border-radius:8px}.auto-grading-wizard .success-icon{width:3rem;height:3rem;margin-right:.75rem}.auto-grading-wizard .success-icon svg{width:100%;height:100%;display:block}.auto-grading-wizard .success-text{font-size:1.5rem;font-weight:600;color:#22c55e}.auto-grading-wizard .validation-error,.auto-grading-wizard .grading-error{margin:1em 0;font-weight:500;color:var(--warning-text)}.auto-grading-wizard .no-feedback,.auto-grading-wizard .no-results{font-style:italic;color:var(--muted)}.auto-grading-wizard .timer{margin:1rem 0;font-weight:500}.auto-grading-wizard .results-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.auto-grading-wizard .grading-result-card{padding:1rem 1.25rem;margin-bottom:1.25rem;border:1px solid var(--warm-white-light);border-radius:8px;background:var(--warm-white);box-shadow:0 1px 4px #0000000f}.auto-grading-wizard .grading-result-filename{margin:0 0 .5rem;color:var(--primary-dark)}.auto-grading-wizard .total-score{font-weight:600;margin-bottom:.75rem}.auto-grading-wizard .rationale-item{padding:.75rem .9rem;margin-bottom:.75rem;border-radius:6px;background:var(--warm-white-light);line-height:1.45}@media (max-width: 768px){.auto-grading-wizard .wizard-content{grid-template-columns:1fr}.auto-grading-wizard .right-column{order:-1;margin-bottom:2rem}.auto-grading-wizard .template-dropdown-content{position:static;margin-top:0;box-shadow:none;border:none;background:var(--warm-white-light)}}.file-input-wrapper{position:relative;display:flex;align-items:center;padding:1rem;margin-bottom:1rem;border:2px dashed var(--warm-white-light);border-radius:.5rem;transition:border-color .2s}.file-input-wrapper.has-file{border-style:solid;border-color:var(--primary-dark)}.file-input-wrapper.has-file .file-input-button{background-color:var(--primary-highlight)}.file-input-button{background-color:#f3f4f6;border:1px solid #d1d5db;border-radius:6px;padding:8px 12px;font-size:.875rem;cursor:pointer;transition:background-color .2s;flex-shrink:0}.file-input-button:hover{background-color:#e5e7eb}.file-input-filename{margin-left:8px;font-size:.875rem;color:#4b5563;flex:1}.file-input-input{position:absolute;top:0;left:0;width:50%;height:50%;opacity:0;cursor:pointer}.help-icon{margin-left:8px;width:20px;height:20px;color:#6b7280;cursor:pointer;transition:color .2s;flex-shrink:0}.help-icon:hover{color:#374151}.workflow-input-wrapper{position:relative;display:flex;align-items:center;margin-bottom:1.5rem}.workflow-select{flex:1;box-sizing:border-box;padding:10px 12px;font-size:1rem;border:1.6px solid var(--warm-white-light);border-radius:6px;background:var(--warm-white);outline:none;transition:border-color .2s,box-shadow .2s}.workflow-select:focus{border-color:var(--primary-highlight);box-shadow:0 0 0 3px #4e6f8a26;transform:translateY(-1px)}.help-overlay{position:fixed;inset:0;z-index:1000;background-color:#00000080;display:flex;align-items:center;justify-content:center;padding:20px}.help-modal{background-color:#fff;padding:20px;border-radius:8px;box-shadow:0 10px 25px #0000004d;max-width:90vw;max-height:90vh;position:relative;overflow:auto}.help-close-button{position:absolute;top:10px;right:10px;background:none;border:none;font-size:24px;cursor:pointer;color:#666;z-index:1001;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background-color .2s,color .2s}.help-close-button:hover{background-color:#f3f4f6;color:#374151}.help-content{padding-right:20px}.help-content h3{margin-top:0;margin-bottom:12px;color:var(--primary-dark)}.help-description{margin-bottom:20px;color:var(--text-dark);line-height:1.5}.help-image-container{margin-bottom:20px}.help-image-container h4{margin-bottom:12px;color:var(--primary-dark)}.help-image-preview{max-width:100%;max-height:60vh;width:auto;height:auto;display:block;margin:0 auto 12px;border:1px solid #e5e7eb;border-radius:4px;object-fit:contain}.help-download-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary-dark);text-decoration:none;font-size:.875rem;padding:8px 12px;border:1px solid var(--primary-dark);border-radius:4px;transition:background-color .2s}.help-download-link:hover{background-color:#f3f4f6}.help-instructions{margin-top:20px}.help-instructions h4{margin-bottom:12px;color:var(--primary-dark)}.help-instructions ul{margin:0;padding-left:20px}.help-instructions li{margin-bottom:8px;line-height:1.5}@media (max-width: 768px){.help-modal{margin:10px;padding:16px;max-width:calc(100vw - 20px);max-height:calc(100vh - 20px)}.help-image-preview{max-height:50vh}.workflow-input-wrapper{flex-direction:column;align-items:stretch;gap:8px}.workflow-select{margin-bottom:0}.workflow-input-wrapper .help-icon{margin-left:0;align-self:flex-start}.file-input-wrapper{flex-wrap:wrap;gap:8px}.file-input-wrapper .help-icon{order:3;margin-left:0}}.rationale-raw__pre{color:#b8860b;background-color:wheat;padding:.75rem;border-radius:4px;white-space:pre-wrap;font-family:Menlo,monospace;overflow-x:auto}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--background-light);color:var(--text-dark)}.container{width:100%;max-width:1140px;margin-left:auto;margin-right:auto;padding-left:1.5rem;padding-right:1.5rem}.section-title{font-size:clamp(2.2rem,5vw,2.75rem);font-weight:800;text-align:center;color:var(--primary-brand);margin-bottom:1rem}.section-subtitle{font-size:clamp(1rem,2.5vw,1.15rem);max-width:650px;margin:0 auto 4rem;text-align:center;color:var(--text-dark);line-height:1.6}.hero-section{padding:6rem 0;background-color:var(--background-white);overflow:hidden}.hero-container{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:4rem}.hero-title{font-size:clamp(2.8rem,6vw,4rem);font-weight:800;color:var(--primary-brand);line-height:1.2;margin-bottom:1.5rem}.hero-subtitle{font-size:1.2rem;color:var(--text-dark);margin-bottom:2.5rem;max-width:500px}.hero-cta{display:flex;gap:1rem}.btn{padding:1rem 2rem;border-radius:var(--radius);font-size:1rem;font-weight:600;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease;border:2px solid transparent;display:inline-block}.btn-primary{background:var(--primary-brand);color:var(--background-white);box-shadow:var(--shadow-md)}.btn-secondary{background:transparent;color:var(--primary-brand);border-color:var(--border-color)}.btn-primary:hover,.btn-secondary:hover{transform:translateY(-3px);box-shadow:0 8px 20px #0000001f}.hero-image-wrapper{display:flex;justify-content:center;align-items:center}.hero-image{width:100%;max-width:500px;height:auto;border-radius:var(--radius);box-shadow:var(--shadow-md);object-fit:cover}.features-section{padding:6rem 0}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.feature-card{background:var(--background-white);padding:2.5rem 2rem;border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);text-align:center;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}.feature-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-md);border-color:var(--primary-accent)}.feature-icon{width:80px;height:80px;margin-bottom:1.5rem;border-radius:50%;object-fit:cover}.feature-card h3{font-size:1.3rem;font-weight:600;color:var(--primary-brand);margin:0 0 .5rem}.feature-card p{font-size:1rem;color:var(--text-dark);line-height:1.6}.demo-section{padding:6rem 0;background-color:var(--background-white)}.video-wrapper{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:900px;margin:0 auto;border-radius:var(--radius);box-shadow:var(--shadow-md);border:1px solid var(--border-color)}.video-wrapper iframe{position:absolute;top:0;left:0;width:100%;height:100%}.faq-section{padding:6rem 0}.faq-container{max-width:850px}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.faq-item{background:var(--background-white);padding:2rem;border-radius:var(--radius);border-left:4px solid var(--primary-accent);box-shadow:var(--shadow-sm);transition:box-shadow .2s ease}.faq-item:hover{box-shadow:var(--shadow-md)}.faq-item h3{font-size:1.15rem;font-weight:600;margin:0 0 .75rem;color:var(--primary-brand)}.faq-item p{margin:0;color:var(--text-dark);line-height:1.6}@media (max-width: 992px){.hero-container{grid-template-columns:1fr;text-align:center;gap:3rem}.hero-content{order:2}.hero-image-wrapper{order:1}.hero-subtitle{margin-left:auto;margin-right:auto}.hero-cta{justify-content:center}}@media (max-width: 768px){.nav-links{display:none}.faq-grid{grid-template-columns:1fr}}html{scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,sans-serif;background:#fff;color:#1f2937}main{padding:1rem}h1,h2,h3{color:#111827;margin:0}section{padding:2rem 0}.container{max-width:1200px;margin:0 auto;padding:0 1rem}button{cursor:pointer}.btn-primary{background:#4f46e5;color:#fff;border:none;padding:.75rem 1.25rem;border-radius:4px}.btn-primary:hover{background:#4338ca}.page-section{margin-top:2rem;padding-top:2rem;border-top:1px solid #e5e7eb}