:root{--primary:#4f46e5;--primary-hover:#4338ca;--secondary:#f3f4f6;--text:#111827;--text-light:#6b7280;--border:#e5e7eb;--bg-light:#f9fafb;--error:#ef4444;--success:#10b981;--warning:#f59e0b;--card-shadow:0 4px 6px rgba(0,0,0,0.05);--page-shadow:0 2px 4px rgba(0,0,0,0.1)}*{box-sizing:border-box;margin:0;padding:0}.container{max-width:85%;margin:100px auto;background:white;border-radius:16px;box-shadow:var(--page-shadow);overflow:hidden}.header-t{padding:24px;border-bottom:1px solid var(--border);text-align:center;background:white}.header-t h1{font-size:2.5rem;margin-bottom:12px;font-weight:700;line-height:1.6;color:var(--primary);font-family:"Noto Sans",sans-serif}.header-t p{color:var(--text-light);font-size:1.05rem;font-family:"Noto Sans",sans-serif}.main-content{padding:32px;transition:all .3s ease}.input-section{margin-bottom:24px}.input-label{display:block;font-weight:500;margin-bottom:8px;color:var(--text)}.input-textarea{width:100%;min-height:200px;padding:16px;border:1px solid var(--border);border-radius:8px;font-family:monospace;font-size:.9rem;resize:vertical;margin-bottom:16px}.input-actions{display:flex;gap:12px;flex-wrap:wrap}.input-hint{font-size:.85rem;color:var(--text-light);margin-top:8px}.upload-section{text-align:center;padding:32px;border:2px dashed var(--border);border-radius:12px;background-color:var(--bg-light);transition:all .3s ease;margin-bottom:24px}.upload-section.active{border-color:var(--primary);background-color:rgba(79,70,229,0.05)}.upload-section.hidden{display:none}.upload-icon{font-size:48px;color:var(--primary);margin-bottom:16px}.upload-text{font-size:1.1rem;color:var(--text);margin-bottom:8px;font-weight:500}.upload-hint{font-size:.9rem;color:var(--text-light);margin-bottom:16px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s ease;border:0;outline:0;font-size:.95rem;gap:8px}.btn-primary{background-color:var(--primary);color:white}.btn-primary:hover{background-color:var(--primary-hover)}.btn-secondary{background-color:var(--secondary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background-color:#e5e7eb}.btn-success{background-color:var(--success);color:white}.btn-success:hover{background-color:#0da271}#file-input{display:none}.preview-container{display:none;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.preview-container.visible{display:grid}@media(max-width:768px){.preview-container{grid-template-columns:1fr}}.preview-box{border:1px solid var(--border);border-radius:8px;padding:16px;background:white}.preview-title{font-size:1rem;font-weight:600;margin-bottom:12px;color:var(--primary);display:flex;align-items:center;gap:8px}.preview-content{height:250px;overflow:auto;border:1px solid var(--border);border-radius:4px;background:#f5f5f5;display:flex;align-items:center;justify-content:center;padding:10px}.preview-image{max-width:100%;max-height:100%}.format-options{display:none;background:white;border-radius:12px;padding:24px;margin-bottom:24px;border:1px solid var(--border);animation:fadeIn .3s ease}.format-options.visible{display:block}.options-title{font-size:1.2rem;margin-bottom:16px;color:var(--primary);font-weight:600;display:flex;align-items:center;gap:10px}.options-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}.option-group{margin-bottom:16px}.option-label{display:block;margin-bottom:8px;font-weight:500;color:var(--text)}.option-select{width:100%;padding:10px;border:1px solid var(--border);border-radius:6px;background:white}.output-section{display:none;text-align:center;margin-bottom:24px;animation:fadeIn .3s ease}.output-section.visible{display:block}.output-info{background:white;border-radius:12px;padding:20px;border:1px solid var(--border);max-width:500px;margin:0 auto 20px;box-shadow:var(--card-shadow)}.output-icon{font-size:48px;color:var(--success);margin-bottom:16px}.output-filename{font-weight:600;margin-bottom:8px;word-break:break-all}.output-filesize{color:var(--text-light);font-size:.9rem}.error-message{display:none;padding:16px;background-color:#fee2e2;color:var(--error);border-radius:8px;margin-bottom:24px;text-align:center;font-weight:500}.loading{display:none;margin:24px 0;text-align:center;color:var(--primary)}.loading-spinner{animation:spin 1s linear infinite;font-size:2.5rem}.toast{position:fixed;bottom:20px;right:20px;padding:16px 24px;border-radius:8px;background-color:var(--primary);color:white;font-weight:500;box-shadow:0 4px 12px rgba(0,0,0,0.15);transform:translateY(100px);opacity:0;transition:all .3s ease;z-index:1000}.toast.show{transform:translateY(0);opacity:1}.toast.error{background-color:var(--error)}.toast.success{background-color:var(--success)}.toast.warning{background-color:var(--warning)}@keyframes spin{0{transform:rotate(0)}100%{transform:rotate(360deg)}}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.how-to-section-wrapper{max-width:1200px;margin:40px auto;padding:0 20px}.how-to-section-wrapper h2{font-family:'Space Grotesk',sans-serif;text-align:center;font-size:2.2rem;color:#333;line-height:1.6;margin-bottom:40px}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.step-card{background-color:#fff;padding:30px;border-radius:12px;border:1px solid #e9ecef;text-align:left;box-shadow:0 5px 15px rgba(0,0,0,0.05)}.step-card .step-number{font-size:1.5rem;font-weight:700;color:#fff;background-color:#0d47a1;width:45px;height:45px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:20px}.step-card h3{font-family:'Space Grotesk',sans-serif;font-size:1.3rem;margin-bottom:10px;color:#222;line-height:1.6}.step-card p{color:#666;line-height:1.6;font-size:1rem;margin:0}@media(max-width:768px){.steps-grid{grid-template-columns:1fr}}.content-wrapper{max-width:1200px;margin:40px auto;padding:20px;font-family:'Noto Sans',sans-serif;line-height:1.6;color:#333}.content-wrapper h2{font-size:2.2em;color:#4f46e5;margin-top:40px;margin-bottom:15px;border-bottom:2px solid #e5e7eb;padding-bottom:10px}.content-wrapper h3{font-size:1.5em;color:#333;margin-top:30px;margin-bottom:10px}.content-wrapper p{margin-bottom:20px;font-size:1em}.content-wrapper ul{list-style:none;padding:0;margin-bottom:20px}.content-wrapper ul li{position:relative;padding-left:30px;margin-bottom:15px;font-size:1em}.content-wrapper ul li i{position:absolute;left:0;top:5px;color:#10b981;font-size:1.2em}.content-wrapper a{color:#4f46e5;text-decoration:none;font-weight:bold;transition:color .3s ease}.content-wrapper a:hover{color:#4338ca;text-decoration:underline}.conclusion-section{max-width:1200px;margin:60px auto 40px;padding:40px;background:linear-gradient(135deg,#f6f9fc 0,#e9f2fa 100%);border-radius:16px;text-align:center;border-left:5px solid #4f46e5}.conclusion-section h2{font-size:2.2em;color:#4f46e5;margin-bottom:20px;font-family:'Space Grotesk',sans-serif}.conclusion-section p{font-size:1.1em;line-height:1.8;margin-bottom:25px;color:#444}.conclusion-cta{margin-top:30px}@media(max-width:768px){.content-wrapper{padding:15px;margin:20px auto}.content-wrapper h2{font-size:1.8em}.content-wrapper h3{font-size:1.3em}.container{max-width:95%;margin:80px auto}.main-content{padding:20px}.upload-section{padding:25px 15px}.input-actions{flex-direction:column;align-items:center}.conclusion-section{padding:25px 20px;margin:40px 15px 30px}.conclusion-section h2{font-size:1.8em}}