*,:before,:after{box-sizing:border-box}body{background:#fafafa;min-height:100vh;margin:0}:root{--accent:#7c3aed;--accent-light:#ede9fe;--accent-dark:#5b21b6;--bg:#fafafa;--card-bg:#fff;--text:#1f2937;--text-sub:#6b7280;--border:#e5e7eb;--radius:12px;--shadow:0 2px 12px #00000014}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.app{max-width:860px;margin:0 auto;padding:0 16px 64px}.hero{text-align:center;padding:56px 16px 40px}.hero-badge{background:var(--accent-light);color:var(--accent-dark);letter-spacing:.08em;text-transform:uppercase;border-radius:99px;margin-bottom:16px;padding:4px 14px;font-size:12px;font-weight:700;display:inline-block}.hero h1{color:var(--text);letter-spacing:-.02em;margin-bottom:14px;font-size:clamp(28px,5vw,44px);font-weight:800}.hero-sub{color:var(--text-sub);max-width:560px;margin:0 auto;font-size:17px;line-height:1.6}.main{flex-direction:column;gap:24px;display:flex}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}.card h2{margin-bottom:6px;font-size:18px;font-weight:700}.section-desc{color:var(--text-sub);margin-bottom:18px;font-size:14px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);cursor:pointer;justify-content:center;align-items:center;min-height:180px;transition:border-color .2s;display:flex;overflow:hidden}.dropzone:hover{border-color:var(--accent)}.dropzone-placeholder{color:var(--text-sub);flex-direction:column;align-items:center;gap:8px;display:flex}.upload-icon{color:var(--accent);font-size:32px;font-weight:800}.dropzone-hint{font-size:12px}.preview-img{object-fit:contain;max-width:100%;max-height:320px;image-rendering:pixelated}.palette-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;display:grid}.palette-card{border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;padding:14px;transition:all .15s}.palette-card:hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.palette-card.selected{border-color:var(--accent);background:var(--accent-light)}.palette-swatches{flex-wrap:wrap;gap:3px;margin-bottom:10px;display:flex}.swatch{border:1px solid #0000001a;border-radius:2px;width:16px;height:16px}.palette-name{margin-bottom:2px;font-size:14px;font-weight:700}.palette-desc{color:var(--text-sub);font-size:12px}.convert-btn{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;width:100%;padding:14px;font-size:16px;font-weight:700;transition:background .15s}.convert-btn:hover:not(:disabled){background:var(--accent-dark)}.convert-btn:disabled{opacity:.5;cursor:not-allowed}.result-section{margin-top:24px}.result-preview{display:inline-block;position:relative}.watermark-badge{color:#fff;background:#0009;border-radius:4px;padding:3px 8px;font-size:11px;font-weight:700;position:absolute;top:8px;right:8px}.download-buttons{flex-direction:column;gap:10px;margin-top:16px;display:flex}.download-btn{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;padding:12px 24px;font-size:15px;font-weight:700;transition:background .15s}.download-btn:hover{background:var(--accent-dark)}.download-btn.secondary{color:var(--accent);border:2px solid var(--accent);background:#fff}.unlock-notice{color:var(--text-sub);font-size:13px}.license-box{border:2px solid var(--accent-light);border-radius:var(--radius);box-shadow:var(--shadow);background:#fff;margin-bottom:8px;padding:24px}.license-header{align-items:flex-start;gap:12px;margin-bottom:16px;display:flex}.lock-icon{color:var(--accent);background:var(--accent-light);border-radius:8px;padding:6px 10px;font-size:13px;font-weight:800}.license-title{font-size:16px;font-weight:700}.license-sub{color:var(--text-sub);font-size:13px}.buy-btn{text-align:center;background:var(--accent);color:#fff;border-radius:var(--radius);margin-bottom:10px;padding:12px;font-size:15px;font-weight:700;text-decoration:none;transition:background .15s;display:block}.buy-btn:hover{background:var(--accent-dark)}.guarantee{color:var(--text-sub);text-align:center;margin-bottom:16px;font-size:12px}.license-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-sub);margin-bottom:6px;font-size:12px;font-weight:700}.license-input{border:1px solid var(--border);border-radius:8px;width:100%;margin-bottom:10px;padding:10px 12px;font-family:monospace;font-size:14px}.unlock-btn{background:var(--text);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:11px;font-size:14px;font-weight:700;transition:opacity .15s}.unlock-btn:hover:not(:disabled){opacity:.85}.unlock-btn:disabled{opacity:.5;cursor:not-allowed}.license-error{color:#dc2626;margin-top:8px;font-size:13px}.license-hint{color:var(--text-sub);margin-top:8px;font-size:12px}.faq-section{margin-top:16px}.faq-section h2{margin-bottom:20px;font-size:22px;font-weight:800}.faq-list{flex-direction:column;gap:16px;display:flex}.faq-item{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.faq-item h3{color:var(--accent-dark);margin-bottom:8px;font-size:15px;font-weight:700}.faq-item p{color:var(--text-sub);font-size:14px;line-height:1.6}.footer{text-align:center;border-top:1px solid var(--border);color:var(--text-sub);flex-direction:column;gap:6px;margin-top:48px;padding-top:24px;font-size:13px;display:flex}.footer a{color:var(--accent);font-weight:700;text-decoration:none}