:root{--bg:#0e0f12;--panel:#17191e;--line:#2a2d35;--text:#e8e9ec;--dim:#8b8f99;--acc:#ff4d6d;--ok:#3ddc97}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-text-size-adjust:100%}
a{color:var(--acc)}
button{font:inherit;color:inherit;cursor:pointer}
.btn{background:var(--line);border:0;border-radius:8px;padding:8px 14px}
.btn.primary{background:var(--acc);color:#fff;font-weight:600}
.btn:disabled{opacity:.4;cursor:default}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;vertical-align:middle}
.seg button{background:none;border:0;color:var(--dim);padding:5px 11px}
.seg button.on{background:var(--line);color:var(--text)}
kbd{border:1px solid var(--line);border-radius:3px;padding:0 4px;font-size:11px}

/* 对比查看器 */
.viewer{display:grid;grid-template-rows:auto 1fr;height:100%;min-height:0}
.viewer .bar{display:flex;gap:10px;align-items:center;padding:8px 12px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.viewer .info{margin-left:auto;color:var(--dim);font-size:13px;font-variant-numeric:tabular-nums}
.viewer .info b{color:var(--text);font-weight:500}
.viewer .hint{color:var(--dim);font-size:12px}
.viewer .hold{display:none}
.stage{position:relative;overflow:auto;cursor:grab;touch-action:none;min-height:0}
.stage.panning{cursor:grabbing}
.cv{position:relative;margin:0 auto}
.cv img{position:absolute;inset:0;width:100%;height:100%;user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none;display:block}
.divider{position:absolute;top:0;bottom:0;width:2px;background:#fff;box-shadow:0 0 0 1px #0006;cursor:ew-resize;transform:translateX(-1px)}
.divider::after{content:"◀ ▶";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;color:#111;font-size:11px;padding:6px 8px;border-radius:14px;white-space:nowrap}
.tag{position:absolute;top:10px;padding:2px 8px;border-radius:4px;background:#000a;font-size:12px;pointer-events:none;white-space:nowrap}
.tag.l{left:10px}.tag.r{right:10px;background:var(--acc)}
.tag.c{left:50%;transform:translateX(-50%)}
@media (pointer:coarse){
  .viewer .hint{display:none}
  .viewer .hold{display:inline-block}
  .viewer .info{margin-left:0;width:100%}
}