.captcha-html-page{min-height:100vh;padding:clamp(20px,4vw,48px) clamp(16px,4vw,40px);background:linear-gradient(135deg,#eef2ff,#f8fafc 45%,#fdf2f8);color:#1f2937;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif}.captcha-html-page *{box-sizing:border-box}.ch-container{max-width:1240px;margin:0 auto}.ch-header{text-align:center;margin-bottom:32px}.ch-title{display:flex;align-items:center;justify-content:center;gap:8px;margin:0;font-size:clamp(1.25rem,2.6vw,1.7rem);font-weight:800;letter-spacing:-.01em;background:linear-gradient(135deg,#6366f1,#8b5cf6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:#4338ca}.ch-title-icon{font-size:1.05em;-webkit-text-fill-color:initial}.ch-desc{max-width:560px;margin:8px auto 0;color:#64748b;font-size:13px;line-height:1.6}.ch-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin-top:12px}.ch-badge{padding:2px 11px;border-radius:999px;font-size:11px;font-weight:700;background:#fff;border:1px solid #e2e8f0;color:#475569}.ch-badge.png{background:linear-gradient(135deg,#6366f1,#818cf8);border-color:transparent;color:#fff}.ch-badge.jpg{background:#f1f5f9;color:#94a3b8;border-color:#e2e8f0}.ch-badge.gif{background:linear-gradient(135deg,#8b5cf6,#a78bfa);border-color:transparent;color:#fff}.ch-badge.bmp{background:linear-gradient(135deg,#ec4899,#f472b6);border-color:transparent;color:#fff}.ch-error-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;padding:12px 16px;border-radius:12px;background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;font-size:14px}.ch-error-bar button{border:none;background:transparent;color:inherit;font-size:16px;line-height:1;cursor:pointer}.ch-workspace{display:grid;grid-template-columns:360px 1fr;gap:24px;align-items:start}.ch-left-panel{display:flex;flex-direction:column;gap:16px}.ch-right-panel{display:flex;flex-direction:column;min-width:0}.ch-settings-card{padding:20px;border-radius:16px;background:#fff;border:1px solid #e5e7eb;box-shadow:0 1px 3px #0f172a0d}.ch-settings-title{margin:0 0 14px;font-size:15px;font-weight:700;color:#111827}.ch-upload-mini{display:flex;flex-direction:column;align-items:center;gap:8px;padding:24px 16px;border:2px dashed #cbd5e1;border-radius:14px;background:#f8fafc;color:#64748b;cursor:pointer;transition:all .2s ease}.ch-upload-mini:hover,.ch-upload-mini.dragging{border-color:#6366f1;background:#eef2ff}.ch-uploading{display:flex;align-items:center;gap:8px;color:#6366f1;font-weight:600;font-size:14px}.ch-spinner{display:inline-block;width:16px;height:16px;border:2px solid #c7d2fe;border-top-color:#6366f1;border-radius:50%;animation:chSpin .7s linear infinite}@keyframes chSpin{to{transform:rotate(360deg)}}.ch-uploaded{display:flex;align-items:center;gap:8px;justify-content:center;color:#334155;font-weight:500;font-size:14px}.ch-file-size{font-size:12px;color:#94a3b8}.ch-upload-hint-mini{display:flex;flex-direction:column;align-items:center;gap:4px;color:#94a3b8;font-size:13px}.ch-setting-item{margin-bottom:14px}.ch-setting-item:last-child{margin-bottom:0}.ch-setting-item>label{display:block;margin-bottom:6px;font-size:13px;font-weight:600;color:#374151}.ch-input{width:100%;padding:9px 12px;font-size:14px;color:#111827;background:#fff;border:1px solid #d1d5db;border-radius:10px;transition:all .2s ease;font-family:inherit}.ch-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px #6366f126;outline:none}.ch-mode-btns{display:flex;gap:8px;flex-wrap:wrap}.ch-size-btn{flex:1;min-width:44px;padding:8px 10px;font-size:13px;font-weight:600;color:#475569;background:#fff;border:1px solid #d1d5db;border-radius:10px;cursor:pointer;transition:all .2s ease}.ch-size-btn:hover{border-color:#a5b4fc;color:#4338ca}.ch-size-btn.active{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-color:transparent;box-shadow:0 4px 12px #6366f14d}.ch-btn-convert{width:100%;margin-top:14px;padding:12px;font-size:15px;font-weight:700;color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border:none;border-radius:12px;cursor:pointer;box-shadow:0 6px 16px #6366f14d;transition:all .2s ease}.ch-btn-convert:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 22px #6366f166}.ch-btn-convert:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.ch-btn-reset-small{width:100%;margin-top:10px;padding:9px;font-size:13px;color:#64748b;background:#fff;border:1px solid #e5e7eb;border-radius:10px;cursor:pointer;transition:all .2s ease}.ch-btn-reset-small:hover{background:#f8fafc;border-color:#cbd5e1}.ch-template-list{display:flex;flex-direction:column;gap:8px}.ch-template-btn{padding:10px 14px;font-size:13px;text-align:left;color:#374151;background:#fff;border:1px solid #e5e7eb;border-radius:10px;cursor:pointer;transition:all .2s ease}.ch-template-btn:hover{color:#4338ca;background:#eef2ff;border-color:#a5b4fc;transform:translate(2px)}.ch-tabs{display:flex;flex-wrap:wrap;gap:6px;padding:5px;margin-bottom:16px;background:#f1f5f9;border-radius:14px}.ch-tab{flex:1;min-width:90px;padding:9px 12px;font-size:13px;font-weight:600;color:#64748b;background:transparent;border:none;border-radius:10px;cursor:pointer;transition:all .2s ease}.ch-tab:hover{color:#4338ca}.ch-tab.active{color:#4338ca;background:#fff;box-shadow:0 1px 3px #0f172a14}.ch-editor-wrap{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid #e5e7eb;border-radius:16px;box-shadow:0 1px 3px #0f172a0d}.ch-editor{width:100%;min-height:520px;padding:18px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.6;color:#1e293b;background:#fff;border:none;border-radius:16px;outline:none;resize:vertical}.ch-editor-footer{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:#f8fafc;border-top:1px solid #f1f5f9;color:#94a3b8;font-size:12px}.ch-btn-clear{padding:0;font-size:12px;font-weight:600;color:#ef4444;background:transparent;border:none;cursor:pointer}.ch-btn-clear:hover{text-decoration:underline}.ch-preview-wrap{min-height:520px;overflow:hidden;background:#fff;border:1px solid #e5e7eb;border-radius:16px;box-shadow:0 1px 3px #0f172a0d}.ch-preview-iframe{display:block;width:100%;height:600px;border:none;background:#fff}.ch-empty-result{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;min-height:520px;padding:24px;text-align:center;color:#94a3b8}.ch-empty-result-compact{min-height:200px}.ch-empty-icon{font-size:48px;opacity:.6}.ch-muted-text{margin:0;font-size:14px;color:#94a3b8}.ch-split-wrap{display:grid;grid-template-columns:1fr 1fr;min-height:520px;overflow:hidden;background:#fff;border:1px solid #e5e7eb;border-radius:16px;box-shadow:0 1px 3px #0f172a0d}.ch-split-left{display:flex;border-right:1px solid #e5e7eb}.ch-split-left .ch-editor{min-height:520px;border-radius:0}.ch-split-right{min-height:520px;background:#fff}.ch-split-right .ch-preview-iframe{height:100%;min-height:520px}@media (max-width: 960px){.ch-workspace{grid-template-columns:1fr}}@media (max-width: 768px){.ch-split-wrap{grid-template-columns:1fr}.ch-split-left{border-right:none;border-bottom:1px solid #e5e7eb}.ch-preview-iframe{height:420px}}