/* 工作台演示件 — 首屏动画 + 闭环分步面板 */
.stage-hold{position:relative}
.stage{position:relative;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-2);overflow:hidden}
.stage:before{content:"";position:absolute;inset:0;border-radius:16px;box-shadow:inset 0 0 0 1px oklch(1 0 0/.6);pointer-events:none;z-index:5}
.st-chrome{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;background:var(--paper-2);border-bottom:1px solid var(--line)}
.st-chrome .d{width:10px;height:10px;border-radius:50%;background:var(--line);flex:none}
.st-chrome .d:nth-child(1){background:oklch(0.72 0.14 30)}
.st-chrome .d:nth-child(2){background:oklch(0.80 0.11 85)}
.st-chrome .d:nth-child(3){background:oklch(0.74 0.11 150)}
.st-proj{margin:0 auto;display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--ink-2);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:4px 12px}
.st-proj .sq{width:16px;height:16px;border-radius:4px;background:color-mix(in oklab,var(--pine),transparent 84%);color:var(--pine);font-family:var(--serif);font-size:10px;display:grid;place-items:center;font-weight:700}
.st-proj em{font-style:normal;font-family:var(--mono);font-size:11px;color:var(--faint)}
.st-brand{display:flex;align-items:center;gap:8px;margin-left:8px;font-size:12.5px;font-weight:600;letter-spacing:.06em;color:var(--ink-2);font-family:var(--serif)}
.st-brand .bm{width:18px;height:18px;border-radius:5px;background:var(--pine);color:oklch(.96 .01 90);font-size:10px;display:grid;place-items:center;font-weight:700}
.st-ico{width:22px;height:22px;border-radius:6px;display:grid;place-items:center;flex:none}
.st-ico svg{width:14px;height:14px;stroke:var(--faint);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.st-body{display:grid;grid-template-columns:230px 1fr 262px;height:560px}

/* 左：文件 */
.c-files{background:var(--paper-2);border-right:1px solid var(--line);padding:14px 0;position:relative;overflow:hidden}
.c-nav{display:flex;flex-direction:column;gap:1px;padding:0 8px 11px;margin-bottom:11px;border-bottom:1px solid var(--line)}
.cn{display:flex;align-items:center;gap:9px;padding:6px 7px;border-radius:7px;font-size:12px;color:var(--ink-2)}
.cn.on{background:var(--card);color:var(--ink);font-weight:500;box-shadow:0 1px 2px oklch(.35 .02 75/.05)}
.cn svg{width:15px;height:15px;flex:none;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;opacity:.72}
.cn .gd{width:5px;height:5px;border-radius:50%;background:var(--ok);margin-left:auto}
.c-acts{margin-left:auto;display:flex;gap:2px}
.c-acts span{width:19px;height:19px;border-radius:5px;display:grid;place-items:center}
.c-acts svg{width:13px;height:13px;stroke:var(--faint);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.c-head{display:flex;align-items:center;gap:8px;font-size:11.5px;letter-spacing:.1em;color:var(--faint);font-weight:600;padding:0 14px 10px}
.c-head b{font-family:var(--mono);color:var(--primary);font-size:12px;letter-spacing:0}
.filelist{padding:0 8px;display:flex;flex-direction:column;gap:1px}
.filelist li{display:flex;align-items:center;gap:8px;padding:6px 7px;border-radius:7px;font-size:12px;color:var(--ink-2);opacity:0;transform:translateX(-8px);transition:opacity .45s var(--ease),transform .45s var(--ease),background .3s;transition-delay:calc(var(--i)*62ms)}
.stage[data-phase]:not([data-phase="0"]) .filelist li{opacity:1;transform:none}
.filelist li span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ft{width:17px;height:17px;border-radius:4px;flex:none;display:grid;place-items:center;font-size:7.5px;font-weight:700;letter-spacing:.02em;font-family:var(--mono)}
.ft.pdf{background:color-mix(in oklab,var(--seal),transparent 86%);color:var(--seal)}
.ft.doc{background:color-mix(in oklab,oklch(0.47 0.09 258),transparent 86%);color:oklch(0.44 0.09 258)}
.ft.xls{background:color-mix(in oklab,var(--ok),transparent 84%);color:oklch(0.44 0.08 155)}
.fgrp{font-size:11px;color:var(--faint);padding:12px 15px 6px;letter-spacing:.06em}
.scan{position:absolute;left:0;right:0;height:64px;top:-70px;pointer-events:none;background:linear-gradient(180deg,transparent,color-mix(in oklab,var(--primary),transparent 88%),transparent);opacity:0}
.stage[data-phase="1"] .scan{opacity:1;animation:scan 1.6s var(--ease) .35s 2}
@keyframes scan{from{top:-70px}to{top:100%}}

/* 中：文档 */
.c-doc{background:var(--card);padding:0;overflow:hidden;position:relative}
.c-doc:after{content:"";position:absolute;left:0;right:0;bottom:0;height:46px;background:linear-gradient(180deg,color-mix(in oklab,var(--card),transparent 100%),var(--card) 78%);pointer-events:none;z-index:2}
.d-empty{position:absolute;inset:34px 0 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;text-align:center;padding:0 40px;transition:opacity .5s var(--ease);z-index:3;background:var(--card)}
.d-empty .e-mk{width:42px;height:42px;border-radius:10px;display:grid;place-items:center;font-family:var(--serif);font-size:19px;font-weight:700;color:var(--faint);background:var(--paper-2);box-shadow:inset 0 0 0 1px var(--line-soft);margin-bottom:3px}
.d-empty b{font-size:13.5px;font-weight:500;color:var(--muted)}
.d-empty span{font-size:12px;color:var(--faint);line-height:1.7;max-width:30ch}
.stage[data-phase="2"] .d-empty,.stage[data-phase="3"] .d-empty,.stage[data-phase="4"] .d-empty{opacity:0;pointer-events:none}
.d-tabs{display:flex;align-items:center;gap:2px;height:34px;padding:0 12px;border-bottom:1px solid var(--line-soft);background:var(--paper)}
.d-tab{font-size:11.5px;color:var(--faint);padding:5px 11px;border-radius:6px 6px 0 0}
.d-tab.on{color:var(--ink);background:var(--card);border:1px solid var(--line-soft);border-bottom-color:var(--card);margin-bottom:-1px}
.d-page{padding:26px 34px;height:calc(100% - 34px);overflow:hidden;position:relative}
.d-h1{font-family:var(--serif);font-size:21px;font-weight:700;color:var(--seal);letter-spacing:.04em;opacity:0;transition:opacity .5s}
.d-h2{font-family:var(--serif);font-size:15px;font-weight:700;color:oklch(0.42 0.075 258);margin-top:16px;letter-spacing:.03em}
.d-rule{height:1px;background:var(--line-soft);margin:12px 0 4px;transform:scaleX(0);transform-origin:left;transition:transform .7s var(--ease) .15s}
.stage[data-phase="2"] .d-h1,.stage[data-phase="3"] .d-h1,.stage[data-phase="4"] .d-h1{opacity:1}
.stage[data-phase="2"] .d-rule,.stage[data-phase="3"] .d-rule,.stage[data-phase="4"] .d-rule{transform:scaleX(1)}
.dl{height:8px;border-radius:4px;background:var(--paper-3);margin-top:10px;opacity:0;transform:translateY(6px);transition:opacity .4s var(--ease),transform .4s var(--ease);transition-delay:calc(var(--i)*95ms)}
.dt{position:relative;font-size:12.5px;color:var(--ink-2);line-height:1.9;opacity:0;transform:translateY(6px);transition:opacity .4s var(--ease),transform .4s var(--ease);transition-delay:calc(var(--i)*95ms)}
.stage[data-phase="2"] .dl,.stage[data-phase="3"] .dl,.stage[data-phase="4"] .dl,
.stage[data-phase="2"] .dt,.stage[data-phase="3"] .dt,.stage[data-phase="4"] .dt{opacity:1;transform:none}
.caret{display:inline-block;width:1.5px;height:13px;background:var(--primary);vertical-align:-2px;margin-left:1px;opacity:0}
.stage[data-phase="2"] .caret{opacity:1;animation:blink .9s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.ins,.del{border-radius:3px;padding:0 2px;transition:background .4s,color .4s}
.stage[data-phase="3"] .ins,.stage[data-phase="4"] .ins{background:color-mix(in oklab,var(--ok),transparent 84%);box-shadow:inset 0 -1px 0 color-mix(in oklab,var(--ok),transparent 40%)}
.del{display:none}
.stage[data-phase="3"] .del{display:inline;background:color-mix(in oklab,var(--seal),transparent 88%);color:color-mix(in oklab,var(--seal),var(--muted) 30%);text-decoration:line-through}
.revbar{position:absolute;right:18px;top:56px;display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:9px;padding:6px 8px;box-shadow:var(--sh);opacity:0;transform:translateY(-6px) scale(.96);transition:all .35s var(--ease)}
.stage[data-phase="3"] .revbar{opacity:1;transform:none}
.revbar b{font-size:11px;color:var(--muted);font-weight:500;margin-right:2px}
.rb{font-size:11px;border-radius:6px;padding:3px 9px;border:1px solid var(--line)}
.rb.y{background:var(--pine);color:oklch(.96 .01 90);border-color:transparent}
.rb.n{background:var(--card);color:var(--muted)}
.pin{position:absolute;left:-22px;top:0;width:16px;height:16px;border-radius:50%;background:color-mix(in oklab,var(--gold),transparent 80%);color:var(--gold-d);font-size:9px;font-family:var(--mono);font-weight:700;display:grid;place-items:center;opacity:0;transform:scale(.6);transition:all .4s var(--ease)}
.stage[data-phase="4"] .pin{opacity:1;transform:none}
.pin.p2{transition-delay:.14s}.pin.p3{transition-delay:.28s}
.marked{position:relative;transition:background .4s}
.stage[data-phase="4"] .marked{background:color-mix(in oklab,var(--gold),transparent 89%);border-radius:3px}

/* 右：AI */
.c-ai{background:var(--paper-2);border-left:1px solid var(--line);padding:14px 12px;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto;gap:9px;overflow:hidden;position:relative}
.c-ai>.c-head{position:static;padding:0 0 2px}
.ai-feed{position:relative;display:flex;flex-direction:column;gap:9px;overflow:hidden;min-height:0;min-width:0}
.c-ai.scrolled:after{content:"";position:absolute;left:0;right:0;top:41px;height:28px;background:linear-gradient(180deg,var(--paper-2),color-mix(in oklab,var(--paper-2),transparent 100%));pointer-events:none;z-index:2}
.msg{display:none}
.msg.on{display:block;animation:msgin .5s var(--ease) both}
@keyframes msgin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.msg-r{display:flex;gap:8px}
.av{width:20px;height:20px;border-radius:5px;flex:none;display:grid;place-items:center;font-family:var(--serif);font-size:10px;font-weight:700}
.av.ai{background:var(--seal);color:oklch(.97 .01 60)}
.av.me{background:var(--paper-3);color:var(--muted)}
.bub{font-size:11.5px;line-height:1.72;color:var(--ink-2);background:var(--card);border:1px solid var(--line-soft);border-radius:9px;padding:8px 10px;flex:1}
.bub.mine{background:var(--tint);border-color:color-mix(in oklab,var(--primary),transparent 82%)}
.tool{display:flex;align-items:center;gap:6px;font-size:10.5px;font-family:var(--mono);color:var(--muted);background:var(--card);border:1px solid var(--line-soft);border-radius:7px;padding:5px 9px;margin-left:28px}
.tool .pip{width:5px;height:5px;border-radius:50%;background:var(--ok);flex:none}
.tokc{font-size:10px;font-family:var(--mono);color:var(--faint);margin-left:28px}
.ai-compose{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:10px 11px 8px;box-shadow:0 1px 2px oklch(.35 .02 75/.04)}
.ai-input{font-size:11.5px;color:var(--faint);line-height:1.5;padding-bottom:9px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ai-bar{display:flex;align-items:center;gap:5px;border-top:1px solid var(--line-soft);padding-top:8px}
.ai-tool{font-size:10px;color:var(--muted);background:var(--paper-2);border-radius:5px;padding:2.5px 7px;letter-spacing:.02em}
.ai-tool.acc{color:var(--primary);background:var(--tint-2)}
.send{margin-left:auto;width:21px;height:21px;border-radius:50%;background:var(--primary);color:var(--on-primary);display:grid;place-items:center;font-size:10px;flex:none;line-height:1}

/* 步骤轨 */
.rail{display:flex;border-top:1px solid var(--line);background:var(--paper-2)}
.rail-i{flex:1;display:flex;align-items:center;gap:9px;padding:12px 16px;position:relative;font-size:12.5px;color:var(--faint);transition:color .35s}
.rail-i+.rail-i{border-left:1px solid var(--line-soft)}
.rail-i b{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;font-weight:600}
.rail-i.on{color:var(--ink);font-weight:500}
.rail-i.on b{color:var(--gold-d)}
.rail-i:after{content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--gold);transition:width .3s linear}
.rail-i.on:after{width:100%;transition:width 3.4s linear}
.rail-i.done:after{width:100%;background:color-mix(in oklab,var(--gold),transparent 60%);transition:none}
@media(max-width:1080px){.st-body{height:490px}}
@media(max-width:820px){
  .st-body{grid-template-columns:1fr;height:auto}
  .c-files{border-right:0;border-bottom:1px solid var(--line)}
  .c-ai{border-left:0;border-top:1px solid var(--line)}
  .d-page{height:auto;min-height:230px}
  .d-empty{display:none}
  .c-doc:after{display:none}
  .rail{flex-wrap:wrap}
  .rail-i{flex:1 1 50%}
  .rail-i:nth-child(3){border-left:0}
  .rail-i:nth-child(n+3){border-top:1px solid var(--line-soft)}
}

/* ── 闭环分步：小面板 ─────────────────── */
.flowtabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.ftab{display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:var(--card);border-radius:11px;padding:11px 17px;font-size:14.5px;color:var(--muted);transition:all .25s var(--ease)}
.ftab b{font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.06em}
.ftab:hover{border-color:var(--faint)}
.ftab.on{background:var(--pine);border-color:transparent;color:oklch(.96 .01 90);box-shadow:0 6px 18px oklch(.28 .03 176/.2)}
.ftab.on b{color:var(--gold)}
.flowbody{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:44px;align-items:center}
.fpane{display:none}
.fpane.on{display:block;animation:fadein .5s var(--ease)}
@keyframes fadein{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.fpane h3{font-family:var(--serif);font-size:26px;font-weight:700;letter-spacing:.02em}
.fpane>p{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.85;text-wrap:pretty}
.flist{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.flist li{position:relative;padding-left:17px;font-size:14.5px;color:var(--ink-2);line-height:1.7;text-wrap:pretty}
.flist li:before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--gold)}
.flist li em{font-style:normal;color:var(--muted)}

.mk{background:var(--card);border:1px solid var(--line);border-radius:13px;box-shadow:var(--sh);overflow:hidden}
.mk-h{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line-soft);background:var(--paper-2);font-size:12px;color:var(--muted);letter-spacing:.04em}
.mk-h .sp{flex:1}
.mk-h em{font-style:normal;font-family:var(--mono);font-size:10.5px;color:var(--faint)}
.mk-b{padding:16px}
.prow{display:flex;align-items:center;gap:11px;padding:9px 0;font-size:12.5px;color:var(--ink-2)}
.prow+.prow{border-top:1px solid var(--line-soft)}
.prow .nm{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar{width:74px;height:4px;border-radius:3px;background:var(--paper-3);overflow:hidden;flex:none}
.bar i{display:block;height:100%;background:var(--primary);border-radius:3px;width:0;animation:fill 1.5s var(--ease) forwards;animation-delay:calc(var(--i)*.18s)}
@keyframes fill{to{width:100%}}
.pct{font-family:var(--mono);font-size:10.5px;color:var(--faint);width:34px;text-align:right;flex:none}
.kchips{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.kchip{font-size:11.5px;color:var(--ink-2);background:var(--paper-2);border:1px solid var(--line-soft);border-radius:6px;padding:4px 9px}
.kchip u{text-decoration:none;color:var(--faint);font-family:var(--mono);font-size:10px;margin-left:5px}

.tree{font-size:12.5px;color:var(--ink-2)}
.tnode{display:flex;align-items:center;gap:9px;padding:7px 0}
.tnode.sub{padding-left:22px;color:var(--muted);font-size:12px}
.tnode .dotm{width:5px;height:5px;border-radius:50%;background:var(--line);flex:none}
.tnode.ok .dotm{background:var(--ok)}
.tnode.now .dotm{background:var(--primary);box-shadow:0 0 0 3px var(--tint-2);animation:pulse 1.4s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 6px color-mix(in oklab,var(--primary),transparent 92%)}}
.tnode .st{margin-left:auto;font-family:var(--mono);font-size:10px;color:var(--faint)}
.tnode.ok .st{color:var(--ok)}

.diff{font-size:12.5px;line-height:2;color:var(--ink-2)}
.diff .del{display:inline;background:color-mix(in oklab,var(--seal),transparent 89%);color:color-mix(in oklab,var(--seal),var(--muted) 24%);text-decoration:line-through;border-radius:3px;padding:0 3px}
.diff .ins{background:color-mix(in oklab,var(--ok),transparent 85%);border-radius:3px;padding:0 3px;box-shadow:inset 0 -1px 0 color-mix(in oklab,var(--ok),transparent 45%)}
.diff-act{display:flex;align-items:center;gap:8px;margin-top:14px;padding-top:13px;border-top:1px solid var(--line-soft)}
.diff-act .src{font-size:11px;color:var(--faint);margin-right:auto;font-family:var(--mono)}

.clist li{display:flex;align-items:flex-start;gap:11px;padding:11px 0;font-size:12.5px;color:var(--ink-2);line-height:1.7}
.clist li+li{border-top:1px solid var(--line-soft)}
.cnum{width:18px;height:18px;border-radius:5px;background:color-mix(in oklab,var(--gold),transparent 82%);color:var(--gold-d);font-family:var(--mono);font-size:10px;font-weight:700;display:grid;place-items:center;flex:none;margin-top:2px}
.cwhere{margin-left:auto;font-size:11px;color:var(--primary);white-space:nowrap;flex:none}
.cval{font-family:var(--mono);font-size:11.5px;background:var(--paper-2);border:1px solid var(--line-soft);border-radius:4px;padding:0 5px}
@media(max-width:900px){.flowbody{grid-template-columns:1fr;gap:30px}}