.pc { display: flex; flex-direction: column; gap: var(--sp-2); min-block-size: 0; }
.pc-head { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2) var(--sp-3); }
.pc-pick { display: inline-flex; align-items: center; gap: var(--sp-1); font-size: var(--fs-sm); }
.pc-pick .input { min-inline-size: 14em; max-inline-size: 100%; }
.pc-arrow { color: var(--text-3); }
.pc-sync { margin-inline-start: auto; font-size: var(--fs-sm); }
.pc-bar { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-2) var(--sp-4); }
.pc-summary { margin: 0; font-size: var(--fs-sm); color: var(--text-2); }
.pc-nav { display: inline-flex; align-items: center; gap: var(--sp-2); }
.pc-pos { font-size: var(--fs-sm); min-inline-size: 8em; }
.pc-legend { display: inline-flex; flex-wrap: wrap; gap: var(--sp-1) var(--sp-3); list-style: none; margin: 0; padding: 0; font-size: var(--fs-xs); color: var(--text-2); }
.pc-legend li { display: inline-flex; align-items: center; gap: var(--sp-1); }
.pc-sw { display: inline-block; inline-size: 14px; block-size: 10px; border-radius: 2px; }
.pc-sw.pc-ins { background: var(--ok); } .pc-sw.pc-del { background: var(--danger); } .pc-sw.pc-mov { background: var(--moved); } .pc-sw.pc-pic { background: var(--warn); }

.pc-main { display: grid; grid-template-columns: minmax(200px, 260px) 1fr; gap: var(--sp-3); min-block-size: 0; }
.pc-side { min-block-size: 0; }
.pc-list { list-style: none; margin: 0; padding: 0; max-block-size: max(200px, calc(84vh - 310px)); overflow: auto; display: grid; gap: 2px; align-content: start; }
.pc-item { display: block; inline-size: 100%; text-align: start; border: 1px solid transparent; border-inline-start: 4px solid var(--border-strong); border-radius: var(--r-sm); background: none; color: var(--text); padding: var(--sp-1) var(--sp-2); cursor: pointer; font-size: var(--fs-sm); }
.pc-item:hover { background: var(--hover-bg); }
.pc-item:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }
.pc-item[aria-current="true"] { background: var(--sel-bg); border-color: var(--sel-edge); }
.pc-k-inserted { border-inline-start-color: var(--ok); } .pc-k-deleted { border-inline-start-color: var(--danger); }
.pc-k-changed { border-inline-start-color: var(--warn); } .pc-k-moved { border-inline-start-color: var(--moved); } .pc-k-picture { border-inline-start-color: var(--warn); }
.pc-kind { font-weight: 600; }
.pc-excerpt { display: block; color: var(--text-2); overflow-wrap: anywhere; }
.pc-none { padding: var(--sp-2); }

.pc-cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); min-inline-size: 0; }
.pc-col { min-inline-size: 0; display: flex; flex-direction: column; }
.pc-col-h { font-size: var(--fs-sm); font-weight: 600; margin: 0 0 var(--sp-1); }
.pc-scroll { position: relative; block-size: max(200px, calc(84vh - 335px)); overflow: auto; padding: var(--sp-2); border: 1px solid var(--border); border-radius: var(--r-card); background: var(--surface-2); }
.pc-scroll:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }
.pc-page-no { margin-block: var(--sp-2) var(--sp-1); }
.pc-page-no:first-child { margin-block-start: 0; }
.pc-page { position: relative; inline-size: 100%; background: #fff; border: 1px solid var(--border); }
.pc-canvas { display: block; inline-size: 100%; block-size: 100%; }
.pc-marks { position: absolute; inset: 0; }
.pc-mark { position: absolute; border-radius: 2px; mix-blend-mode: multiply; cursor: pointer; }
.pc-mark.pc-ins { background: rgba(29, 122, 70, .30); box-shadow: inset 0 -2px 0 #1d7a46; }
.pc-mark.pc-del { background: rgba(180, 35, 24, .28); box-shadow: inset 0 -2px 0 #b42318; }
.pc-mark.pc-mov { background: rgba(91, 58, 153, .24); box-shadow: inset 0 -2px 0 #5b3a99; }
.pc-mark.pc-current { outline: 2px solid var(--focus); outline-offset: 1px; mix-blend-mode: normal; }
.pc-page.pc-pic-changed, .pc-page.pc-pic-added, .pc-page.pc-pic-removed { outline: 3px solid var(--warn); outline-offset: 2px; }
.pc-page.pc-current { outline: 3px solid var(--focus); outline-offset: 2px; }
.pc-overlay { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; }
.pc-overlay[hidden] { display: none; }
.pc-ov-btn { position: absolute; inset-block-start: var(--sp-1); inset-inline-end: var(--sp-1); }
.pc-ov-btn[aria-pressed="true"] { background: var(--sel-bg); border-color: var(--sel-edge); }

.pc-text { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--surface); color: var(--text); padding: var(--sp-3); border-radius: var(--r-sm); font-size: var(--fs-md); line-height: 1.5; }
.pc-tmark { cursor: pointer; border-radius: 2px; }
del.pc-tmark { background: var(--danger-bg); color: var(--danger); }
ins.pc-tmark { background: var(--ok-bg); color: var(--ok); text-decoration: none; }
.pc-tmark.pc-mov { background: var(--moved-bg); color: var(--moved); }
.pc-text[data-side="a"] .pc-tmark.pc-mov { text-decoration: line-through; }
.pc-text[data-side="b"] .pc-tmark.pc-mov { text-decoration: underline double; text-underline-offset: 3px; }
.pc-tmark.pc-current { outline: 2px solid var(--focus); outline-offset: 1px; }

@media (max-width: 900px) {
  .pc-main { grid-template-columns: 1fr; }
  .pc-list { max-block-size: 24vh; }
  .pc-scroll { block-size: 50vh; }
}
@media (max-width: 600px) { .pc-cols { grid-template-columns: 1fr; } }