:root{color-scheme:light;--ink:#172033;--muted:#667085;--line:#dde3ec;--soft:#f5f7fb;--blue:#1769e0;--blue-dark:#0e4ca8;--green:#117a55;--danger:#c9362b;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{min-height:100vh;color:var(--ink);background:#eef2f7;margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer}.tool-header{border-bottom:1px solid var(--line);background:#fff;justify-content:space-between;align-items:center;gap:20px;height:64px;padding:0 max(20px,50vw - 560px);display:flex}.tool-brand{color:var(--ink);letter-spacing:.02em;font-weight:800;text-decoration:none}.tool-brand span{color:var(--blue)}.privacy-badge{color:var(--green);background:#e9f8f1;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}.tool-shell{width:min(1120px,100% - 32px);margin:0 auto;padding:44px 0 70px}.tool-intro{max-width:760px;margin-bottom:24px}.tool-kicker{letter-spacing:.12em;font-size:13px;font-weight:800;color:var(--blue)!important;margin:0 0 8px!important}.tool-intro h1{letter-spacing:-.04em;margin:0;font-size:clamp(30px,4vw,48px)}.tool-intro>p:last-child{color:var(--muted);margin:12px 0 0;line-height:1.75}.app-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:24px;box-shadow:0 12px 35px #1720330f}.app-grid{grid-template-columns:minmax(0,1fr) minmax(300px,.75fr);gap:18px;display:grid}.panel{border:1px solid var(--line);background:#fff;border-radius:14px;padding:20px}.panel.soft{background:var(--soft)}.panel h2,.panel h3{margin:0 0 14px;font-size:18px}.field{gap:7px;margin-bottom:16px;display:grid}.field label,.field-label{font-size:14px;font-weight:750}.field small,.hint{color:var(--muted);font-size:13px;line-height:1.6}.operation-options{scrollbar-width:thin;flex-wrap:nowrap;gap:9px;padding-bottom:2px;display:flex;overflow-x:auto}.app-card:not(.pdf-app)>.operation-options{margin-bottom:18px}.operation-option{color:#43516a;white-space:nowrap;background:#fff;border:1px solid #cbd6e4;border-radius:11px;width:116px;min-width:116px;max-width:116px;min-height:46px;padding:8px 10px;font-size:14px;font-weight:700;transition:border-color .18s,color .18s,background .18s,box-shadow .18s}.operation-option:hover{color:var(--blue);background:#f5f9ff;border-color:#79a5e4}.operation-option.active{border-color:var(--blue);color:#fff;background:var(--blue);box-shadow:0 5px 14px #1769e033}input[type=file],input[type=text],input[type=number],select,textarea{width:100%;color:var(--ink);background:#fff;border:1px solid #cbd3df;border-radius:10px;padding:11px 12px}textarea{resize:vertical;min-height:170px;line-height:1.65}input:focus,select:focus,textarea:focus{border-color:var(--blue);outline:3px solid #1769e021}.drop-zone{text-align:center;background:var(--soft);border:1.5px dashed #aab6c7;border-radius:13px;padding:28px 20px}.drop-zone strong{margin-bottom:6px;display:block}.file-picker{cursor:pointer;background:linear-gradient(135deg,#f8faff 0%,#f2f6fc 100%);border:1.5px dashed #9eb3d0;border-radius:16px;align-items:center;gap:18px;min-height:150px;padding:28px 30px;transition:border-color .2s,background .2s,box-shadow .2s,transform .2s;display:flex;position:relative}.file-picker:hover,.file-picker:focus-within,.file-picker.is-dragging{border-color:var(--blue);background:#f1f6ff;box-shadow:0 0 0 4px #1769e014}.file-picker.is-dragging{transform:translateY(-2px)}.file-picker.has-files{background:#f4f8ff;border-style:solid;border-color:#7ca7e4}.file-picker.is-invalid{border-color:var(--danger);background:#fff7f6}.file-picker-input{clip:rect(0, 0, 0, 0);white-space:nowrap;height:1px;margin:-1px;overflow:hidden;border:0!important;width:1px!important;padding:0!important;position:absolute!important}.file-picker-icon{width:54px;height:54px;color:var(--blue);background:#e4efff;border-radius:15px;flex:0 0 54px;place-items:center;display:grid;box-shadow:inset 0 0 0 1px #1769e014}.file-picker-icon svg{stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:27px;height:27px}.file-picker-copy{flex:1;gap:6px;min-width:0;display:grid}.file-picker-copy strong{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:16px;line-height:1.4;overflow:hidden}.file-picker-copy span{color:var(--muted);font-size:13px}.file-picker-action{color:var(--blue);background:#fff;border:1px solid #b9c9df;border-radius:10px;flex:none;padding:10px 16px;font-size:14px;font-weight:750;box-shadow:0 2px 8px #1720330a}.file-picker:hover .file-picker-action{border-color:var(--blue);background:var(--blue);color:#fff}.button-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.btn{background:var(--blue);color:#fff;border:0;border-radius:10px;min-height:42px;padding:0 17px;font-weight:750}.btn:hover{background:var(--blue-dark)}.btn.secondary{color:var(--ink);background:#e8edf5}.btn.danger{color:var(--danger);background:#fee9e7}.btn:disabled{opacity:.45;cursor:not-allowed}.status{background:var(--soft);color:var(--muted);border-radius:10px;margin-top:14px;padding:12px 14px;font-size:14px;line-height:1.6}.progress{background:#e1e6ee;border-radius:999px;height:8px;margin-top:10px;overflow:hidden}.progress>span{background:linear-gradient(90deg, var(--blue), #51a7ff);width:0;height:100%;transition:width .25s;display:block}.result-box{margin-top:18px}.file-list,.page-list,.rule-list{gap:9px;margin:0;padding:0;list-style:none;display:grid}.file-item,.page-item{border:1px solid var(--line);background:#fff;border-radius:10px;justify-content:space-between;align-items:center;gap:12px;padding:11px 13px;display:flex}.file-item small,.page-item small{color:var(--muted)}.stats{grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0;display:grid}.stat{background:var(--soft);border-radius:10px;padding:13px}.stat strong{font-size:20px;display:block}.stat span{color:var(--muted);font-size:12px}.check-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;display:grid}.check-item{border:1px solid var(--line);border-radius:9px;align-items:center;gap:8px;padding:9px 10px;font-size:14px;display:flex}.toast{color:#fff;opacity:0;pointer-events:none;z-index:20;background:#172033;border-radius:10px;padding:11px 16px;transition:all .2s;position:fixed;bottom:28px;left:50%;transform:translate(-50%,15px)}.toast.show{opacity:1;transform:translate(-50%)}.notice{color:#745117;background:#fff7e8;border-left:4px solid #e49a20;border-radius:8px;padding:12px 14px;font-size:13px;line-height:1.65}.hidden{display:none!important}@media (width<=760px){.tool-header{height:auto;min-height:60px;padding:12px 16px}.privacy-badge{font-size:11px}.tool-shell{width:min(100% - 22px,1120px);padding-top:28px}.app-grid{grid-template-columns:1fr}.app-card,.panel{padding:16px}.file-picker{text-align:center;flex-direction:column;justify-content:center;gap:13px;min-height:190px;padding:24px 18px}.file-picker-copy{flex:none;width:100%}.stats,.check-grid{grid-template-columns:1fr}}