:root{--brand: #1e2a45;--brand-light: #2c3c63;--brand-dark: #131c30;--accent: #d92b31;--accent-light: #e8494f;--accent-dark: #b31b22;--page-bg: #ffffff;--bg: #f5f6f8;--card: #ffffff;--text: #1b1f23;--text-light: #4a5568;--muted: #6b7280;--border: #e5e7eb;--border-dark: #cbd5e0;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--info: #3b82f6;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--shadow: 0 1px 3px rgba(0, 0, 0, .1), 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1), 0 2px 4px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1), 0 4px 6px rgba(0, 0, 0, .05);--transition: all .2s ease;--transition-fast: all .15s ease}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}html,body{margin:0;padding:0;height:100%}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--text);background:var(--page-bg);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1200px;margin:0 auto;padding:0 20px}h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:600;color:var(--text)}h2{font-size:1.5rem;margin:0 0 12px;display:flex;align-items:center;gap:10px}h3{font-size:1.25rem;margin:1rem 0 .75rem;display:flex;align-items:center;gap:8px}p{margin:.5rem 0}.topbar{background:var(--card);color:var(--text);border-bottom:1px solid var(--border);box-shadow:var(--shadow);position:sticky;top:0;z-index:100}.topbar-inner{display:flex;align-items:center;justify-content:space-between;padding:8px 0;gap:20px}.brand-link{display:flex;align-items:center;gap:10px;text-decoration:none}.logo{height:44px;width:auto;display:block;transition:var(--transition)}.brand-link:hover .logo{transform:scale(1.05)}.center{display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center}.title{font-weight:700;font-size:1.45rem;letter-spacing:-.02em;color:var(--brand);white-space:nowrap}.subtitle{font-size:1rem;color:var(--muted);font-weight:400}.right{display:flex;gap:8px}.page-body{display:flex;align-items:stretch;min-height:calc(100vh - 62px)}.page-content{flex:1;min-width:0;overflow:hidden}.nav{width:200px;flex-shrink:0;display:flex;flex-direction:column;gap:4px;padding:16px 10px;background:var(--card);border-right:1px solid var(--border);overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:rgba(0,0,0,.2) transparent;position:sticky;top:62px;height:calc(100vh - 62px)}.nav::-webkit-scrollbar{width:4px}.nav::-webkit-scrollbar-track{background:transparent}.nav::-webkit-scrollbar-thumb{background:#0003;border-radius:2px}.nav a{color:var(--text-light);text-decoration:none;padding:10px 14px;border-radius:var(--radius-sm);white-space:nowrap;cursor:pointer;transition:var(--transition);display:flex;align-items:center;gap:10px;font-weight:500;font-size:.92rem;border:2px solid transparent}.nav a:hover{color:var(--brand);background:var(--bg)}.nav a.active{background:var(--accent);color:#fff;box-shadow:0 2px 8px #d92b314d}.nav a i{font-size:.95rem;width:18px;text-align:center;flex-shrink:0}main{padding:24px 0 40px;min-height:calc(100vh - 300px)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;margin:20px 0;box-shadow:var(--shadow);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--bg)}.help{color:var(--muted);margin:0 0 16px;padding:12px;background:var(--bg);border-radius:var(--radius-sm);border-left:3px solid var(--info);display:flex;align-items:flex-start;gap:8px;font-size:.95rem}.help i{margin-top:2px;color:var(--info)}.warn{color:#8a4b00;background:#fff5e6;border:1px solid #ffd9b3;padding:12px 14px;border-radius:var(--radius-sm);margin-bottom:16px;display:flex;align-items:flex-start;gap:10px;font-size:.95rem}.warn i{margin-top:2px;color:var(--warning)}.row{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;margin:12px 0}.grow{flex:1;min-width:200px}label{display:flex;flex-direction:column;gap:6px;font-weight:500;font-size:.9rem;color:var(--text-light)}label span{display:block}input[type=file]{display:block;margin:12px 0;padding:12px;border:2px dashed var(--border);border-radius:var(--radius);background:var(--bg);cursor:pointer;transition:var(--transition);width:100%}input[type=file]:hover{border-color:var(--accent);background:#fdf6f6}input[type=file].drag{border-color:var(--accent);background:#fbeeee;box-shadow:var(--shadow-md)}input[type=text],input[type=number],select,textarea{padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;outline:none;min-width:120px;font-family:inherit;font-size:.95rem;transition:var(--transition);color:var(--text)}input[type=text]:focus,input[type=number]:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #d92b311a}input[type=text]:hover,input[type=number]:hover,select:hover{border-color:var(--border-dark)}.btn{padding:10px 16px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;cursor:pointer;font-family:inherit;font-size:.95rem;font-weight:500;transition:var(--transition);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;color:var(--text)}.btn:hover:not(:disabled){background:var(--bg);border-color:var(--border-dark);transform:translateY(-1px);box-shadow:var(--shadow)}.btn:active:not(:disabled){transform:translateY(0)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.primary{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-dark) 100%);color:#fff;border-color:var(--accent);box-shadow:0 2px 4px #d92b3133}.btn.primary:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-light) 0%,var(--accent) 100%);box-shadow:0 4px 8px #d92b314d;transform:translateY(-2px)}.btn-sm{padding:6px 12px;font-size:.875rem}.btn-icon{padding:8px 10px;border-radius:50%;min-width:auto}.file-list{margin:12px 0;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:8px;max-height:400px;overflow-y:auto}.file-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:var(--radius-sm);border:1px solid var(--bg);margin:6px 0;background:#fff;font-size:.95rem;cursor:pointer;transition:var(--transition)}.file-item:hover{background:var(--bg);border-color:var(--border)}.file-item.selected{outline:2px solid var(--brand);background:#f0f7ff;border-color:var(--brand)}.actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}.toolbar{display:flex;gap:10px;margin:12px 0;flex-wrap:wrap;align-items:center}.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin:16px 0}.thumb{background:#fff;border:2px solid var(--border);border-radius:var(--radius);padding:8px;text-align:center;cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}.thumb:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.thumb.selected{outline:3px solid var(--brand);background:#fdf6f6;border-color:var(--accent)}.thumb canvas{max-width:100%;height:auto;display:block;border-radius:4px;margin-bottom:6px}.thumb .tiny{font-size:.8rem;color:var(--muted);margin-top:4px}.thumb.rot90 canvas{transform:rotate(90deg)}.thumb.rot180 canvas{transform:rotate(180deg)}.thumb.rot270 canvas{transform:rotate(270deg)}.dropzone{border:3px dashed var(--border);background:var(--bg);padding:40px 20px;border-radius:var(--radius-lg);text-align:center;color:var(--muted);margin:16px 0;transition:var(--transition);cursor:pointer}.dropzone:hover{border-color:var(--accent);background:#fdf6f6}.dropzone.drag{border-color:var(--accent);background:#fbeeee;color:var(--accent-dark);box-shadow:var(--shadow-md)}.dropzone i{color:var(--accent);margin-bottom:12px;opacity:.6}.dropzone p{font-weight:500;margin:8px 0}.dropzone small{display:block;margin-top:8px}.dropzone.compact{padding:24px 16px;margin-top:12px}.dropzone.compact i{margin-bottom:8px}.dropzone.upload-hero,.dropzone.compact.upload-hero{padding:46px 24px;border-width:2px;background:var(--bg)}.dz-select-btn{display:flex;align-items:center;justify-content:center;width:fit-content;gap:10px;background:var(--accent);color:#fff;font-family:inherit;font-size:1.12rem;font-weight:600;padding:16px 46px;border:none;border-radius:10px;cursor:pointer;margin:14px auto 4px;box-shadow:0 4px 14px #d92b3147;transition:var(--transition)}.dz-select-btn:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 6px 18px #d92b315c}.dz-select-btn:active{transform:translateY(0)}.upload-hero p{color:var(--muted);font-weight:500;margin:10px 0 0}.upload-hero i.fa-cloud-upload-alt{opacity:1;color:var(--accent)}.tab{display:none}.tab.active{display:block;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.footer{border-top:1px solid var(--border);background:#fff;margin-top:40px;box-shadow:0 -2px 8px #0000000d}.foot-inner{display:flex;align-items:center;justify-content:space-between;padding:20px 0;flex-wrap:wrap;gap:16px}.created-by{font-size:.9rem;color:var(--muted);font-style:italic;text-align:right;display:flex;align-items:center;gap:6px}.tiny{font-size:.875rem}.muted{color:var(--muted)}.loading-overlay{position:fixed;inset:0;background:#000000b3;display:none;justify-content:center;align-items:center;z-index:9999;flex-direction:column;gap:20px}.loading-overlay.active{display:flex}.spinner{width:50px;height:50px;border:4px solid rgba(255,255,255,.3);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:#fff;font-size:1.25rem;font-weight:600}.loading-subtext{color:#fffc;font-size:.95rem}.toast-container{position:fixed;top:80px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:10px;max-width:400px}.toast{background:#fff;border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-lg);display:flex;align-items:flex-start;gap:12px;animation:slideIn .3s ease;border-left:4px solid var(--info)}.toast.success{border-left-color:var(--success)}.toast.error{border-left-color:var(--danger)}.toast.warning{border-left-color:var(--warning)}.toast i{font-size:1.25rem;margin-top:2px}.toast.success i{color:var(--success)}.toast.error i{color:var(--danger)}.toast.warning i{color:var(--warning)}.toast-content{flex:1}.toast-title{font-weight:600;margin-bottom:4px}.toast-message{font-size:.9rem;color:var(--muted)}@keyframes slideIn{0%{transform:translate(400px);opacity:0}to{transform:translate(0);opacity:1}}.modal{display:none;position:fixed;inset:0;background:#00000080;z-index:1000;justify-content:center;align-items:center;padding:20px}.modal.active{display:flex}.modal-content{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-width:600px;width:100%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--border)}.modal-header h2{margin:0}.modal-body{padding:24px;overflow-y:auto}.setting-group{margin-bottom:24px}.setting-group h3{margin-top:0}.log-box{max-height:300px;overflow:auto;margin-top:12px;font-size:.85rem;background:var(--bg);border:1px solid var(--border);padding:12px;border-radius:var(--radius-sm);font-family:Courier New,monospace;white-space:pre-wrap;color:var(--text-light)}.about-section{margin:24px 0;padding:20px;background:var(--bg);border-radius:var(--radius);border-left:4px solid var(--accent)}.about-section h3{margin-top:0;color:var(--brand)}.tick{list-style:none;padding:0}.tick li{padding:10px 0;display:flex;align-items:flex-start;gap:12px}.tick i{color:var(--success);margin-top:4px;font-size:1.1rem}.warn-list{list-style:none;padding:0}.warn-list li{padding:8px 0;display:flex;align-items:flex-start;gap:10px;color:var(--text-light)}.warn-list i{color:var(--muted);margin-top:4px}.shortcuts{display:flex;flex-direction:column;gap:12px}.shortcut-item{display:flex;align-items:center;gap:12px;padding:12px;background:#fff;border-radius:var(--radius-sm);border:1px solid var(--border)}kbd{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:4px 8px;font-family:monospace;font-size:.9rem;box-shadow:0 2px 0 var(--border)}.help-section{margin:20px 0}.help-section h3{color:var(--brand);margin-top:0}.help-section ol,.help-section ul{padding-left:20px}.help-section li{margin:8px 0;line-height:1.6}.preview-box{margin:16px 0;padding:20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);text-align:center}.preview-label{font-weight:600;margin-bottom:12px;color:var(--text-light)}.watermark-preview{user-select:none}@media(max-width:968px){.center{display:none}.title{font-size:1.3rem}.nav{width:160px;font-size:.85rem}.thumbs{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.foot-inner{flex-direction:column;text-align:center}.created-by{text-align:center}}.nav-hamburger{display:none}.nav-overlay{display:none;position:fixed;inset:0;background:#00000073;z-index:299}.nav-overlay.open{display:block}@media(max-width:768px){.nav-hamburger{display:flex}.nav{position:fixed!important;top:0;left:0;bottom:0;width:240px!important;height:100vh!important;z-index:300;transform:translate(-100%);transition:transform .25s ease;padding-top:56px!important}.nav.open{transform:translate(0)}.page-content{width:100%}}@media(max-width:640px){.container{padding:0 16px}.card{padding:16px}.row{flex-direction:column;align-items:stretch}.row label,.row button{width:100%}.actions,.toolbar{flex-direction:column}.actions button,.toolbar button{width:100%}.thumbs{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}.logo{height:38px}.title{font-size:1.15rem}.nav a{font-size:.82rem;padding:8px 10px}.toast-container{left:10px;right:10px;top:70px}.modal-content{margin:10px}}.hidden{display:none!important}.nav-home{color:var(--brand)!important;font-weight:600!important;background:#1e2a4512!important;border-color:#1e2a4526!important;opacity:1!important}.nav-home:hover{background:#1e2a4521!important}.nav-divider{width:1px;background:var(--border);margin:6px 4px;align-self:stretch;display:inline-block}.home-screen{padding:40px 0 60px;min-height:calc(100vh - 200px)}.home-intro{text-align:center;margin-bottom:36px}.home-badge{display:inline-flex;align-items:center;gap:6px;background:#eef2fa;color:var(--brand);font-size:.82rem;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:20px;letter-spacing:.01em}.home-title{font-size:2.2rem;font-weight:800;color:var(--text);letter-spacing:-.03em;margin-bottom:10px;line-height:1.2}.home-sub{font-size:1.05rem;color:var(--muted);margin:0}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tool-card{border-radius:var(--radius-lg);padding:24px 20px 22px;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column;gap:16px;border:1.5px solid transparent;position:relative;overflow:hidden}.tool-card:after{content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;transition:opacity .2s;background:#0000000a}.tool-card:hover{transform:translateY(-5px);box-shadow:0 12px 32px #00000021}.tool-card:hover:after{opacity:1}.tool-card:active{transform:translateY(-2px)}.tc-icon-wrap{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}.tc-name{font-size:1.05rem;font-weight:700;margin-bottom:5px;line-height:1.2}.tc-desc{font-size:.8rem;line-height:1.45;opacity:.8}.tool-card{background:var(--card);border-color:var(--border)}.tool-card:hover{border-color:var(--accent)}.tool-card .tc-icon-wrap{background:#1e2a4512;color:var(--brand);transition:var(--transition)}.tool-card:hover .tc-icon-wrap{background:#d92b311a;color:var(--accent)}.tool-card .tc-name{color:var(--text)}.tool-card .tc-desc{color:var(--muted)}.tc-icon-wrap.tc-icon-img,.tool-card .tc-icon-wrap.tc-icon-img,.tool-card:hover .tc-icon-wrap.tc-icon-img{background:transparent;width:72px;height:72px;border-radius:0;margin:0 auto}.tc-icon-img img{width:100%;height:100%;object-fit:contain;display:block;transition:var(--transition)}.tool-card:hover .tc-icon-img img{transform:scale(1.08)}.tool-card{align-items:center;text-align:center}.tool-card .tc-icon-wrap{margin:0 auto}.tool-card .tc-info{width:100%}.tool-head-icon{height:48px;width:auto;vertical-align:middle}.card-header h2{align-items:center}.tab .card-header{position:relative;justify-content:center}.tab .card-header h2{justify-content:center;text-align:center}.tab .card-header>.btn{position:absolute;right:0;top:50%;transform:translateY(-65%)}[data-theme=dark] .tool-card .tc-icon-wrap.tc-icon-img{background:#f5f6f8;border-radius:12px;padding:6px}@media(prefers-color-scheme:dark){.tool-card .tc-icon-wrap.tc-icon-img{background:#f5f6f8;border-radius:12px;padding:6px}[data-theme=light] .tool-card .tc-icon-wrap.tc-icon-img{background:transparent;border-radius:0;padding:0}}.thumb[draggable=true]{cursor:grab;transition:opacity .15s,outline .15s}.thumb[draggable=true]:active{cursor:grabbing}.thumb.dragging{opacity:.35}.thumb.drag-over{outline:2.5px solid var(--accent);outline-offset:2px}.thumb .thumb-page-num{position:absolute;bottom:3px;left:0;right:0;text-align:center;font-size:10px;font-weight:600;color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.7);pointer-events:none}.ocr-banner{display:flex;align-items:flex-start;gap:12px;padding:12px 16px;background:#fff3e0;border:1px solid #ffe0b2;border-radius:var(--radius);margin:12px 0;font-size:13px}.dark .ocr-banner{background:#2a1a00;border-color:#5c3a00}.ocr-banner>i{color:#e65100;font-size:1.1rem;margin-top:2px;flex-shrink:0}.ocr-banner .btn{margin-left:auto;flex-shrink:0;align-self:center}.col-editor-wrap{margin:12px 0;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}.col-editor-bar{display:flex;align-items:center;gap:10px;padding:9px 14px;background:var(--surface);border-bottom:1px solid var(--border);font-size:12.5px;color:var(--text-muted)}.col-editor-stage{position:relative;overflow:auto;max-height:520px;background:#666;user-select:none}.col-editor-stage canvas{display:block}.col-line{position:absolute;top:0;bottom:0;width:2px;background:#2196f3cc;cursor:ew-resize;transform:translate(-1px);z-index:3}.col-line:before{content:"";position:absolute;inset:0 -6px}.col-line:hover,.col-line.dragging-line{background:#1565c0}.col-line-label{position:absolute;top:4px;left:4px;background:#1565c0;color:#fff;font-size:10px;padding:1px 4px;border-radius:3px;pointer-events:none;white-space:nowrap}.ctrl-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 20px;margin:12px 0 16px;display:flex;flex-direction:column;gap:14px}.ctrl-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);margin-bottom:8px}.ctrl-row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}.ctrl-field{display:flex;flex-direction:column;gap:5px;min-width:110px}.ctrl-field.grow{flex:1;min-width:140px}.ctrl-field>label{font-size:11.5px;font-weight:500;color:var(--text-muted)}.ctrl-field input,.ctrl-field select{height:36px;width:100%;box-sizing:border-box}.tgl-group{display:inline-flex;border:1.5px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;flex-wrap:nowrap}.tgl-btn{padding:7px 13px;font-size:13px;border:none;border-right:1px solid var(--border);background:var(--surface);color:var(--text-muted);cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:background .12s,color 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