.dc-diff-checker{--bg:#f4f5f7;--panel:#ffffff;--panel-2:#f0f1f4;--panel-3:#e7e9ee;--border:#c5c5c5;--border-strong:#c5c5c5;--text:#1c1f24;--text-dim:#666c77;--accent:#005992;--accent-text:#005992;--add-bg:#e4f6ea;--add-fg:#1f7a41;--add-strong:#b7e6c6;--del-bg:#fbe9ea;--del-fg:#b3312f;--del-strong:#f3c1c1;--tok-keyword:#7b3fb0;--tok-string:#005992;--tok-number:#0a6274;--tok-comment:#5b616a;--hunk-down:#1c66b0;--hunk-up:#005992;--mono:'JetBrains Mono', 'Fira Code', Menlo, Consolas, monospace;--sans:'Inter', -apple-system, Segoe UI, sans-serif}.dc-diff-checker *{box-sizing:border-box}.dc-diff-checker{font-family:var(--sans);padding:32px 24px 90px;transition:background .2s,color .2s;max-width:100%}.dc-diff-checker .wrap{max-width:1180px;margin:0 auto}.dc-diff-checker header{margin-bottom:28px;display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.dc-diff-checker header h1{font-size:26px;font-weight:600;margin:0 0 6px;letter-spacing:-.02em}.dc-diff-checker header h1 span{color:var(--accent)}.dc-diff-checker header p{color:var(--text-dim);margin:0;font-size:14px}.dc-diff-checker .panels{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width:760px){.dc-diff-checker .panels{grid-template-columns:1fr}}.dc-diff-checker .panel{background:var(--panel);border:1px solid var(--border-strong);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;position:relative}.dc-diff-checker .panel-head{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--border);font-size:12px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.06em;gap:10px}.dc-diff-checker .panel-head .label-group{display:flex;align-items:center;gap:8px}.dc-diff-checker .lang-badge{background:var(--panel-3);color:#4d525c;padding:2px 8px;border-radius:20px;font-size:10px;letter-spacing:.04em;text-transform:none}.dc-diff-checker .panel-head .right-group{display:flex;align-items:center;gap:10px}.dc-diff-checker .icon-btn{background:0 0;border:0;color:var(--text-dim);cursor:pointer;font-size:14px;padding:2px 4px;display:flex;align-items:center}.dc-diff-checker .icon-btn:hover{color:var(--text)}.dc-diff-checker .count{font-variant-numeric:tabular-nums;text-transform:none}.dc-diff-checker textarea{width:100%;height:240px;resize:none;border:0;outline:0;background:0 0;color:var(--text);font-family:var(--mono);font-size:13.5px;line-height:1.6;padding:14px;display:block}.dc-diff-checker textarea:focus-visible{box-shadow:inset 0 0 0 2px var(--accent)}.dc-diff-checker textarea::placeholder{color:#6b7078}.dc-diff-checker .drop-overlay{position:absolute;inset:0;background:rgb(242 166 90 / .12);border:2px dashed var(--accent);border-radius:10px;display:none;align-items:center;justify-content:center;font-size:13px;font-weight:500;color:var(--accent-text);pointer-events:none;z-index:5}.dc-diff-checker .panel.drag-over .drop-overlay{display:flex}.dc-diff-checker .resize-handle{height:14px;margin:2px 0 0;display:flex;align-items:center;justify-content:center;cursor:row-resize;user-select:none}.dc-diff-checker .resize-handle span{width:36px;height:4px;border-radius:2px;background:var(--border)}.dc-diff-checker .resize-handle:hover span{background:var(--accent)}.dc-diff-checker .controls{display:flex;gap:10px;align-items:center;margin:14px 0 26px;flex-wrap:wrap}.dc-diff-checker button{font-family:var(--sans);font-size:14px;font-weight:500;cursor:pointer;border-radius:8px;padding:10px 18px;border:1px solid var(--border-strong);background:var(--panel-2);color:var(--text);transition:.15s}.dc-diff-checker button:hover{border-color:#b3b3b3;background:var(--panel-3)}.dc-diff-checker button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.dc-diff-checker button.primary:hover{filter:brightness(1.08)}.dc-diff-checker .toggle{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}.dc-diff-checker .toggle input{accent-color:var(--accent)}.dc-diff-checker .nav-diff{display:flex;align-items:center;gap:8px;margin-left:auto}.dc-diff-checker .nav-diff button{width:32px;height:32px;padding:0;display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1}.dc-diff-checker .nav-diff .hunk-count{font-size:13px;color:var(--text-dim);min-width:44px;text-align:center;font-variant-numeric:tabular-nums}.dc-diff-checker .stats{display:flex;gap:18px;font-size:13px;color:var(--text-dim);margin-bottom:14px}.dc-diff-checker .stats b{color:var(--text);font-weight:600}.dc-diff-checker .add-dot,.dc-diff-checker .del-dot{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:6px}.dc-diff-checker .add-dot{background:var(--add-fg)}.dc-diff-checker .del-dot{background:var(--del-fg)}.dc-diff-checker .diff-box{background:var(--panel);border:1px solid var(--border-strong);border-radius:10px;overflow:hidden;scroll-margin-top:20px}.dc-diff-checker .diff-line{display:flex;font-family:var(--mono);font-size:13.5px;line-height:1.7;border-bottom:1px solid var(--panel-3);position:relative}.dc-diff-checker .diff-line:last-child{border-bottom:none}.dc-diff-checker .gutter{width:52px;flex-shrink:0;text-align:right;padding:2px 10px 2px 22px;color:#666b76;user-select:none;border-right:1px solid var(--panel-3);background:var(--panel-2);position:relative}.dc-diff-checker .marker{width:22px;flex-shrink:0;text-align:center;user-select:none}.dc-diff-checker .content{flex:1;padding:2px 12px 2px 4px;white-space:pre-wrap;word-break:break-word}.dc-diff-checker .line-add{background:var(--add-bg)}.dc-diff-checker .line-add .marker{color:var(--add-fg)}.dc-diff-checker .line-del{background:var(--del-bg)}.dc-diff-checker .line-del .marker{color:var(--del-fg)}.dc-diff-checker .diff-line.ws-only{opacity:.5}.dc-diff-checker .hunk-icon{position:absolute;left:5px;top:50%;transform:translateY(-50%);width:16px;height:16px;display:flex;align-items:center;justify-content:center;font-size:12px;line-height:1}.dc-diff-checker .hunk-icon.down{color:var(--hunk-down)}.dc-diff-checker .hunk-icon.up{color:var(--hunk-up)}.dc-diff-checker .diff-line.hunk-current{outline:1px solid var(--accent);outline-offset:-1px}.dc-diff-checker mark.add{background:var(--add-strong);color:inherit;border-radius:3px;padding:0 1px}.dc-diff-checker mark.del{background:var(--del-strong);color:inherit;border-radius:3px;padding:0 1px;text-decoration:line-through}.dc-diff-checker .tok-keyword{color:var(--tok-keyword)}.dc-diff-checker .tok-string{color:var(--tok-string)}.dc-diff-checker .tok-number{color:var(--tok-number)}.dc-diff-checker .tok-comment{color:var(--tok-comment);font-style:italic}.dc-diff-checker .collapse-summary{background:var(--panel-2);justify-content:center}.dc-diff-checker .collapse-summary .content{flex:none;padding:0}.dc-diff-checker .collapse-btn{border:1px dashed var(--border);background:0 0;color:var(--text-dim);font-family:var(--mono);font-size:12px;padding:4px 14px;border-radius:20px;margin:4px 0}.dc-diff-checker .collapse-btn:hover{color:var(--text);border-color:var(--text-dim)}.dc-diff-checker .collapsed-rows{display:none}.dc-diff-checker .empty-state{padding:40px;text-align:center;color:var(--text-dim);font-size:14px}.dc-diff-checker footer{margin-top:20px;font-size:12px;color:var(--text-dim);text-align:center}.dc-diff-checker .jump-btns{position:fixed;right:22px;bottom:22px;display:flex;flex-direction:column;gap:8px;z-index:20}.dc-diff-checker .jump-btns button{width:38px;height:38px;border-radius:50%;padding:0;display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 2px 8px rgb(0 0 0 / .25)}.dc-diff-checker .undo-toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,80px);background:var(--panel-3);border:1px solid var(--border);border-radius:10px;padding:10px 14px;display:flex;align-items:center;gap:12px;font-size:13px;opacity:0;transition:transform .2s,opacity .2s;pointer-events:none;z-index:30}.dc-diff-checker .undo-toast.show{transform:translate(-50%,0);opacity:1;pointer-events:auto}.dc-diff-checker .undo-toast button{padding:6px 12px;font-size:13px}