/*
 * 敬老版第 01 章：AI 创作课共用样式。
 * 只使用整卡底色和四周均匀边框，不使用左侧强调线。
 */
.el-page{display:block;max-width:1200px}
.el-main{width:100%;max-width:1200px;margin:0 auto}
.lesson-back{min-height:44px;padding:0 15px;display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;font-weight:760}
.creative-intro{margin:22px 0;padding:20px;border:1px solid var(--sage);border-radius:18px;background:var(--sage-soft)}
.creative-intro strong{display:block;color:var(--forest);font-size:20px}
.creative-intro p{margin:7px 0 0;color:var(--ink-2);font-size:18px;line-height:1.8}
.phone-demo{max-width:820px;margin:0 auto;padding:22px;border:1px solid var(--line);border-radius:24px;background:#fff}
.phone-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:15px;border-bottom:1px solid var(--line)}
.phone-brand{font-size:20px;font-weight:850;color:var(--ink)}
.phone-note{color:var(--muted);font-size:15px}
.demo-steps{margin-top:16px;display:grid;gap:12px}
.demo-step{padding:17px 18px;border:1px solid var(--line);border-radius:16px;background:var(--paper);opacity:.58;transition:opacity .2s ease,background .2s ease,border-color .2s ease}
.demo-step b{display:block;margin-bottom:5px;color:var(--ink);font-size:19px}
.demo-step p{margin:0;color:var(--ink-2);font-size:18px;line-height:1.75}
.demo-step.active{opacity:1;border-color:var(--clay);background:#fff3ed;animation:creativeFocus .8s ease}
.demo-step.done{opacity:1;border-color:var(--sage);background:var(--sage-soft)}
.demo-next{width:100%;min-height:58px;margin-top:16px;border:0;border-radius:14px;color:#fff;background:var(--forest);cursor:pointer;font-size:19px;font-weight:820}
.demo-next:disabled{cursor:default;opacity:.6}
.prompt-parts{margin-top:20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.prompt-part{padding:17px;border:1px solid var(--line);border-radius:16px;background:#fff}
.prompt-part small{color:var(--clay);font-size:14px;font-weight:820}
.prompt-part h3{margin:6px 0 5px;font-size:19px}
.prompt-part p{margin:0;color:var(--ink-2);font-size:17px;line-height:1.7}
[data-creative-demo]{
  margin-top:36px;
  container-type:inline-size;
}
[data-creative-demo] .el-lab-head{
  min-height:84px;
  padding:20px 28px;
  flex-wrap:wrap;
  column-gap:22px;
  row-gap:10px;
}
[data-creative-demo] .el-lab-head strong{font-size:19px;line-height:1.5}
[data-creative-demo] .el-step-status{font-size:15px;line-height:1.5}
@container (max-width:620px){
  [data-creative-demo] .el-lab-head{align-items:flex-start;flex-direction:column}
  [data-creative-demo] .el-step-status{margin-left:0}
}
.example-output{margin-top:18px;padding:22px;border:1px solid var(--gold);border-radius:18px;background:#faf4e7}
.example-output small{color:#80612e;font-weight:820}
.example-output p{margin:10px 0 0;font:700 21px/1.9 var(--serif);white-space:pre-line}
.alice-practice{margin-top:28px;padding:24px;border:1px solid var(--sage);border-radius:22px;background:#f4f8f3}
.alice-practice-head{display:grid;grid-template-columns:64px minmax(0,1fr) auto;gap:15px;align-items:start}
.alice-practice-head img{width:64px;height:64px;object-fit:cover;border-radius:50%;border:1px solid var(--sage)}
.alice-practice-head h2{margin:0;font:700 27px/1.4 var(--serif)}
.alice-practice-head p{margin:4px 0 0;color:var(--muted);font-size:17px;line-height:1.65}
.alice-practice-allowance{justify-self:end;padding:8px 12px;border:1px solid var(--sage);border-radius:999px;background:#fff;color:var(--forest);font-size:15px;font-weight:850;white-space:nowrap}
.inline-chat{display:grid;gap:14px;align-content:start}
.inline-chat-row{display:grid;gap:5px;max-width:92%}
.inline-chat-row b{font-size:14px;color:var(--muted)}
.inline-chat-row.user{justify-self:end}
.inline-chat-row.user b{text-align:right}
.inline-chat-row.alice{justify-self:start;max-width:100%}
.inline-chat-bubble{padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:var(--paper);color:var(--ink-2);font-size:18px;line-height:1.78;white-space:pre-wrap;overflow-wrap:anywhere}
.inline-chat-row.user .inline-chat-bubble{border-color:var(--sage);background:var(--sage-soft);color:var(--ink)}
.inline-chat-row.alice .inline-chat-bubble.has-markdown{box-sizing:border-box;width:100%;padding:20px 22px;background:linear-gradient(145deg,#fff 0%,#fbfaf6 100%);white-space:normal}
.inline-chat-bubble.has-markdown p{margin:0 0 14px}
.inline-chat-bubble.has-markdown p:last-child{margin-bottom:0}
.inline-chat-bubble.has-markdown hr{width:86px;height:2px;margin:18px auto;border:0;border-radius:999px;background:var(--gold)}
.inline-chat-markdown-title{margin:8px 0 16px;text-align:center;color:var(--forest);font:750 27px/1.45 var(--serif)}
.inline-chat-bubble .creative-stanza{padding:0 10px;color:var(--ink);font:650 21px/2.05 var(--serif);letter-spacing:.02em}
.inline-chat-bubble.has-markdown strong{color:var(--forest);font-weight:850}
.inline-chat-bubble.has-markdown em{color:#705323}
.inline-chat-bubble.has-markdown ul{margin:10px 0 14px;padding-left:1.35em}
.inline-chat-bubble.has-markdown li+li{margin-top:6px}
.inline-chat-bubble.has-markdown blockquote{margin:14px 0;padding:13px 15px;border:1px solid var(--gold);border-radius:13px;background:#faf4e7;color:var(--ink-2)}
.inline-chat-bubble.has-markdown a{color:var(--forest);font-weight:760;text-underline-offset:3px}
.inline-chat-bubble img{display:block;width:100%;height:auto;margin:12px 0 2px;border:1px solid var(--line);border-radius:16px;background:var(--paper)}
/* 右侧白艾莉对话面板：与正式版一致的固定侧栏形态，宽度可拖拽调整 */
:root{--elder-alice-w:480px}
.elder-alice-panel{position:fixed;top:0;right:0;bottom:0;z-index:130;display:flex;flex-direction:column;width:min(var(--elder-alice-w),100vw);border-left:1px solid var(--line);background:#fff;box-shadow:-16px 0 40px rgba(23,61,50,.10)}
.elder-alice-panel[hidden]{display:none}
.elder-alice-resize{position:absolute;left:0;top:0;bottom:0;z-index:6;display:flex;align-items:center;justify-content:center;width:22px;cursor:col-resize;touch-action:none}
.elder-alice-resize i{display:block;width:6px;height:72px;border-radius:999px;background:var(--line);transition:background .15s,height .15s}
.elder-alice-resize:hover i,.elder-alice-resize:focus-visible i,html.elder-alice-resizing .elder-alice-resize i{height:104px;background:var(--forest)}
.elder-alice-resize:focus-visible{outline:3px solid rgba(79,139,101,.35);outline-offset:-3px;border-radius:10px}
html.elder-alice-resizing,html.elder-alice-resizing *{cursor:col-resize!important;user-select:none!important}
.elder-alice-panel-head{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--paper)}
.elder-alice-panel-head img{width:46px;height:46px;flex:0 0 auto;border:1px solid var(--sage);border-radius:50%;object-fit:cover}
.elder-alice-panel-title{min-width:0}
.elder-alice-panel-title strong{display:block;color:var(--ink);font:700 21px/1.25 var(--serif)}
.elder-alice-panel-title span{display:block;margin-top:2px;overflow:hidden;color:var(--muted);font-size:14px;text-overflow:ellipsis;white-space:nowrap}
.elder-alice-panel-close{margin-left:auto;flex:0 0 auto;min-height:46px;padding:0 15px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink-2);cursor:pointer;font-size:16px;font-weight:780}
.elder-alice-panel-log{flex:1;min-height:0;padding:18px;overflow-y:auto;background:#fff}
.elder-alice-panel-status{min-height:24px;margin:0;padding:9px 18px;border-top:1px solid var(--line);background:var(--paper);color:var(--muted);font-size:15px;line-height:1.6}
.elder-alice-panel-status[data-kind="error"]{color:#8a3e30}
.elder-alice-panel-status[data-kind="done"],.elder-alice-panel-status[data-kind="ready"]{color:var(--forest)}
.elder-alice-panel-composer{display:flex;align-items:stretch;gap:10px;padding:12px 18px 16px;background:#fff}
.elder-alice-panel-composer textarea{box-sizing:border-box;flex:1;min-height:58px;max-height:150px;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);font:500 18px/1.6 var(--sans);resize:none}
.elder-alice-panel-composer textarea:focus{outline:3px solid rgba(79,139,101,.2);border-color:#4f8b65}
.elder-alice-panel-composer button{flex:0 0 auto;min-width:92px;border:0;border-radius:14px;background:var(--forest);color:#fff;cursor:pointer;font-size:18px;font-weight:840}
.elder-alice-panel-composer button:disabled,.elder-alice-panel-composer textarea:disabled{cursor:default;opacity:.55}
.elder-alice-fab{position:fixed;right:20px;bottom:20px;z-index:120;display:flex;align-items:center;gap:10px;min-height:60px;padding:8px 18px 8px 9px;border:1px solid var(--sage);border-radius:999px;background:#fff;color:var(--forest);cursor:pointer;font-size:17px;font-weight:830;box-shadow:0 12px 32px rgba(23,61,50,.16)}
.elder-alice-fab[hidden]{display:none}
.elder-alice-fab img{width:44px;height:44px;border:1px solid var(--sage);border-radius:50%;object-fit:cover}
.elder-alice-panel-log .inline-chat-bubble img{cursor:zoom-in}
.inline-chat-copy{justify-self:start;min-height:46px;margin-top:2px;padding:8px 16px;border:1px solid var(--sage);border-radius:12px;background:#fff;color:var(--forest);cursor:pointer;font-size:16px;font-weight:780}
.inline-chat-copy.copied{border-color:var(--forest);background:var(--sage-soft)}
.elder-alice-lightbox{position:fixed;inset:0;z-index:140;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:24px;background:rgba(18,34,28,.88)}
.elder-alice-lightbox[hidden]{display:none}
.elder-alice-lightbox img{max-width:min(1100px,94vw);max-height:72vh;border-radius:18px;background:#fff;box-shadow:0 24px 70px rgba(0,0,0,.4);cursor:zoom-out}
.elder-alice-lightbox p{margin:0;color:#e8efe8;font-size:17px}
.elder-alice-lightbox button{min-height:56px;padding:0 30px;border:0;border-radius:14px;background:#fff;color:var(--forest);cursor:pointer;font-size:19px;font-weight:840}
@media(min-width:981px){
  body.elder-alice-open{padding-right:min(var(--elder-alice-w),50vw)}
}
@media(max-width:980px){
  .elder-alice-panel{width:100vw;border-left:0}
  .elder-alice-resize{display:none}
}
.revision-context{margin-top:20px;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:14px}
.revision-draft,.revision-reason{padding:18px;border:1px solid var(--sage);border-radius:16px;background:#fff}
.revision-draft small{color:var(--forest);font-size:15px;font-weight:850}
.revision-draft h3{margin:7px 0 8px;font-size:20px}
.revision-draft p{margin:0;color:var(--ink);font:650 18px/1.9 var(--serif)}
.revision-reason{background:#faf4e7;border-color:var(--gold)}
.revision-reason strong{display:block;color:#705323;font-size:18px}
.revision-reason ul{margin:9px 0 0;padding-left:1.3em;color:var(--ink-2);font-size:16px;line-height:1.75}
.revision-reason li+li{margin-top:5px}
.prompt-label{display:block;margin-top:18px;font-size:17px;font-weight:820}
.creative-input{box-sizing:border-box;width:100%;min-height:220px;margin-top:8px;padding:16px;border:1px solid var(--line);border-radius:15px;background:#fff;color:var(--ink);font:500 19px/1.75 var(--sans);overflow-y:hidden;resize:none}
.creative-input:focus{outline:3px solid rgba(79,139,101,.2);border-color:#4f8b65}
.prompt-samples{margin-top:12px;display:flex;flex-wrap:wrap;gap:9px}
.prompt-sample{min-height:46px;padding:9px 14px;border:1px solid var(--sage);border-radius:12px;background:#fff;color:var(--forest);cursor:pointer;font-size:16px;font-weight:760}
.image-practice{margin-top:18px;padding:18px;border:1px solid var(--gold);border-radius:18px;background:#faf4e7}
.image-practice>summary{
  margin:-18px;
  padding:18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  border-radius:18px;
  cursor:pointer;
  list-style:none;
}
.image-practice>summary::-webkit-details-marker{display:none}
.image-practice>summary small{
  display:block;
  color:#80612e;
  font-size:14px;
  font-weight:850;
}
.image-practice>summary strong{
  display:block;
  margin-top:4px;
  color:var(--ink);
  font:700 22px/1.45 var(--serif);
}
.image-practice>summary b{
  min-width:72px;
  min-height:42px;
  padding:0 13px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--gold);
  border-radius:11px;
  color:#705323;
  background:#fff;
  font-size:15px;
}
.image-practice[open]>summary{
  margin:-18px -18px 18px;
  border-bottom:1px solid var(--gold);
  border-radius:18px 18px 0 0;
}
.image-practice[open]>summary b{font-size:0}
.image-practice[open]>summary b:before{content:"收起";font-size:15px}
.image-practice-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.image-practice-head small{display:block;color:#80612e;font-size:14px;font-weight:850}
.image-practice-head strong{display:block;margin-top:4px;font:700 23px/1.45 var(--serif)}
.image-practice-head p{margin:5px 0 0;color:var(--ink-2);font-size:16px;line-height:1.65}
.image-practice-head>span{flex:0 0 auto;padding:8px 12px;border:1px solid var(--gold);border-radius:999px;background:#fff;color:#705323;font-size:15px;font-weight:850}
.image-formula{display:flex;align-items:center;gap:10px;margin:16px 0 0}
.image-formula b{flex:1;padding:13px 10px;border:1px solid var(--sage);border-radius:13px;background:#fff;color:var(--forest);text-align:center;font-size:18px}
.image-formula span{flex:0 0 auto;color:#80612e;font-size:22px;font-weight:850}
.image-formula-example{margin:11px 0 0;color:var(--ink-2);font-size:17px;line-height:1.75}
.image-example-label{margin:17px 0 0;color:var(--ink);font-size:17px;font-weight:820}
.scene-samples{margin-top:15px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}
.scene-sample{width:100%;min-height:50px;padding:10px}
.scene-sample.selected{border-color:var(--forest);background:var(--sage-soft);color:var(--forest);box-shadow:0 0 0 2px rgba(47,94,73,.16)}
.scene-sample.action-cue,.alice-launch.action-cue{position:relative;z-index:1;animation:elderActionCue 1.15s ease-in-out 4}
.image-prompt-preview{margin-top:14px;padding:15px 17px;border:1px solid var(--sage);border-radius:14px;background:#fff}
.image-prompt-preview[hidden]{display:none}
.image-prompt-preview.cue-reveal{animation:elderCueReveal .38s ease-out}
.image-prompt-preview small{display:block;color:var(--forest);font-size:15px;font-weight:850}
.image-prompt-preview p{margin:7px 0 0;color:var(--ink);font-size:18px;line-height:1.75}
.alice-launch.image-launch{margin-top:13px}
.image-wait-note{margin:12px 0 0;padding:13px 15px;border:1px solid var(--gold);border-radius:13px;background:#fff;color:var(--ink-2);font-size:15px;line-height:1.75}
.image-wait-note strong{color:#705323}
.alice-launch{width:100%;min-height:60px;margin-top:14px;border:0;border-radius:14px;background:var(--forest);color:#fff;cursor:pointer;font-size:19px;font-weight:840}
.alice-launch:disabled{cursor:wait;opacity:.65}
.alice-status{min-height:26px;margin:9px 0 0;color:var(--muted);font-size:16px;line-height:1.6}
.alice-status[data-kind="error"]{color:#8a3e30}
.alice-status[data-kind="done"],.alice-status[data-kind="ready"]{color:var(--forest)}
.alice-disclosure{margin:9px 0 0;padding:13px 15px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--ink-2);font-size:15px;line-height:1.65}
.save-steps{margin-top:20px;display:grid;gap:10px}
.save-step{padding:16px 18px;border:1px solid var(--line);border-radius:15px;background:#fff;font-size:18px;line-height:1.7}
.lesson-summary{margin-top:42px;padding:25px;border:1px solid var(--sage);border-radius:22px;background:var(--sage-soft)}
.lesson-summary h2{margin:0 0 11px;font:700 29px/1.4 var(--serif)}
.lesson-summary p{margin:0;color:var(--ink-2);font-size:19px;line-height:1.85}
.lesson-summary strong{color:var(--forest)}
@keyframes creativeFocus{
  0%{opacity:.45;box-shadow:none}
  50%{box-shadow:0 0 0 8px rgba(189,105,85,.14)}
  100%{opacity:1;box-shadow:none}
}
@keyframes elderActionCue{
  0%,100%{transform:translateY(0);box-shadow:0 0 0 0 rgba(189,105,85,0)}
  50%{transform:translateY(-2px);box-shadow:0 0 0 7px rgba(189,105,85,.2)}
}
@keyframes elderCueReveal{
  from{opacity:.25;transform:translateY(-8px)}
  to{opacity:1;transform:translateY(0)}
}
@media(max-width:820px){
  .el-top-in{grid-template-columns:1fr auto;grid-template-areas:"brand back" "font font"}
  .lesson-back{grid-area:back}.el-spacer{display:none}
  .el-hero{min-height:0;padding:36px 28px}
  .el-hero-art{
    position:static;
    width:min(270px,100%);
    height:auto;
    aspect-ratio:1;
    margin:20px auto 0;
    transform:none;
  }
  .el-teacher-tag{position:static;display:inline-block;margin-top:18px}
  .prompt-parts{grid-template-columns:1fr}
  .revision-context{grid-template-columns:1fr}
  .scene-samples{grid-template-columns:repeat(2,minmax(0,1fr))}
}
/* 右侧 Alice 保持原样；左侧课程按实际剩余宽度切成紧凑单栏。
   iframe 仍是桌面宽度，普通 media query 不会触发，所以必须跟随 alice-side 状态。 */
html.alice-side .el-page{padding:22px 17px 65px}
html.alice-side .elder-review-prompt{
  width:calc(100% - 34px);
  padding:22px;
  align-items:stretch;
  flex-direction:column;
  gap:18px;
}
html.alice-side .elder-review-actions{justify-content:flex-start}
html.alice-side .el-hero{min-height:0;padding:34px 24px}
html.alice-side .el-hero h1,
html.alice-side .el-hero p{
  white-space:normal!important;
  overflow-wrap:break-word;
  word-break:break-word;
}
html.alice-side .el-hero-art{
  position:static;
  width:min(270px,100%);
  height:auto;
  aspect-ratio:1;
  margin:20px auto 0;
  transform:none;
}
html.alice-side .el-teacher-tag{
  position:static;
  display:inline-block;
  margin-top:18px;
}
html.alice-side .prompt-parts,
html.alice-side .revision-context{grid-template-columns:1fr}
html.alice-side .alice-practice{padding:18px}
html.alice-side .alice-practice-head{grid-template-columns:52px minmax(0,1fr)}
html.alice-side .alice-practice-head img{width:52px;height:52px}
html.alice-side .alice-practice-allowance{
  grid-column:1/-1;
  justify-self:start;
  white-space:normal;
}
html.alice-side .image-practice-head{display:grid}
html.alice-side .image-practice-head>span{justify-self:start}
html.alice-side .scene-samples{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:430px){
  .el-page{padding-left:14px;padding-right:14px}
  .el-hero{min-height:0;padding:31px 20px}
  .el-hero h1{font-size:37px}
  .lesson-back{padding:0 10px}
  .phone-demo,.alice-practice{padding:17px}
  .alice-practice-head{grid-template-columns:52px 1fr}
  .alice-practice-head img{width:52px;height:52px}
  .alice-practice-allowance{grid-column:1/-1;justify-self:start;white-space:normal}
  .inline-chat-row{max-width:96%}
  .inline-chat-row.alice .inline-chat-bubble.has-markdown{min-width:0;padding:18px}
  .inline-chat-markdown-title{font-size:24px}
  .inline-chat-bubble .creative-stanza{padding:0;font-size:20px}
  .creative-input{font-size:18px}
  .image-practice-head{display:grid}
  .image-practice-head>span{justify-self:start}
  .image-formula{display:grid;grid-template-columns:1fr}
  .image-formula span{display:none}
  .scene-samples{grid-template-columns:1fr 1fr}
}
@media(prefers-reduced-motion:reduce){
  .demo-step{transition:none}
  .demo-step.active{animation:none}
}