/* ===== 工作台三栏布局（完整复刻独立课程 studio.css + reader.css V12 优化包） ===== */

/* === 工作台专属变量（studio.css 局部 :root） === */
.workshop-shell,.workshop-toolbar,.workshop-bottombar{
  --studio-night:#142319;
  --studio-paper:#fbf8f1;
  --studio-ink:#18232d;
  --studio-ink-2:#3a4854;
  --studio-dim:#6b6357;
  --studio-line:#e7e1d4;
  --studio-line-warm:#b9b1a1;
  --studio-action:#df5130;
  --studio-proof:#2f7d57;
  --studio-concept:#48688c;
  --studio-capstone:#9a6b18;
  --studio-muted:#6b6357;
}

body.lesson-page{background:var(--bg);overflow:hidden;height:100vh}
body.lesson-page #app{height:100vh;display:flex;flex-direction:column}

/* === 顶栏：4 列（reader-back + course-label + top-progress + reader-outline） === */
.reader-toolbar.workshop-toolbar{
  display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:16px;
  padding:0 20px;height:56px;border-bottom:1px solid var(--line);
  background:var(--surface);flex:none;
}
.reader-back{display:inline-flex;align-items:center;gap:6px;color:var(--ink-2);font-size:13px;font-weight:600;min-height:44px}
.reader-back:hover{color:var(--accent-text)}
.workshop-course-label{display:grid;gap:1px;min-width:0}
.workshop-course-label small{font-family:var(--mono);font-size:11px;color:var(--dim);letter-spacing:.04em}
.workshop-course-label strong{font-size:14px;font-weight:700;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.workshop-top-progress{display:flex;align-items:center;gap:10px;justify-content:flex-end}
.workshop-top-progress span{display:block;width:100px;height:5px;background:var(--bg-2);border-radius:3px;overflow:hidden}
.workshop-top-progress span::after{content:"";display:block;height:100%;width:var(--workbench-pct,0%);background:var(--accent);border-radius:3px;transition:width .3s ease}
.workshop-top-progress b{font-family:var(--mono);font-size:12px;color:var(--dim);white-space:nowrap}
/* 课程地图 dropdown */
.reader-outline{position:relative;z-index:80}
.reader-outline>summary{display:flex;align-items:center;gap:10px;min-height:44px;padding:0 12px;border-radius:8px;color:var(--ink);font-weight:700;cursor:pointer;list-style:none;font-size:13px}
.reader-outline>summary::-webkit-details-marker{display:none}
.reader-outline>summary::before{content:"☰";font-size:13px;color:var(--dim)}
.reader-outline[open]>summary{background:var(--bg-2)}
.reader-outline .sp-txt-m{min-width:35px;color:var(--green-text);font-size:12px;font-weight:700;text-align:right}
.reader-outline-panel{position:absolute;top:50px;right:0;width:min(460px,calc(100vw - 32px));max-height:min(72vh,700px);overflow:auto;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-pop)}
.reader-outline-head{display:grid;gap:4px;padding:0 8px 16px;border-bottom:1px solid var(--line)}
.reader-outline-head b{font-size:15px;line-height:1.5}
.reader-outline-head span{color:var(--dim);font-size:12px;line-height:1.55}
.reader-outline-panel .side-toc{padding-top:12px}
.reader-outline-panel .s-ch{margin-top:12px}
.reader-outline-panel .s-ch-t{font-family:inherit;font-size:12px;font-weight:750;letter-spacing:0;color:var(--dim);margin-bottom:6px}
.reader-outline-panel .s-l{min-height:42px;border-radius:7px;font-size:12.5px;line-height:1.45}
.reader-outline-panel .s-idx{font-family:inherit;font-size:11px}

/* === 三栏外壳 === */
.workshop-shell{
  display:grid;grid-template-columns:94px minmax(0,1fr) 292px;
  grid-template-rows:minmax(0,1fr) 64px;
  flex:1;min-height:0;
}

/* === 左侧任务轨道（复刻源项目 .workshop-route-item 结构） === */
.workshop-route{
  grid-column:1;grid-row:1;border-right:1px solid var(--line);
  background:var(--bg-2);overflow-y:auto;padding:18px 0;
  display:flex;flex-direction:column;align-items:center;
}
.workshop-route-title{margin-bottom:28px;font-size:11px;font-weight:800;writing-mode:vertical-rl;letter-spacing:.16em;color:var(--dim)}
.workshop-route-item{
  display:grid;grid-template-columns:30px 1fr;align-items:center;gap:8px;
  width:100%;border:0;background:transparent;cursor:pointer;
  padding:8px 12px 8px 16px;text-align:left;transition:background .12s;
}
.workshop-route-item:hover:not(.is-locked){background:var(--surface)}
.workshop-route-item.is-locked{cursor:not-allowed;opacity:.4}
.workshop-route-item b{
  width:28px;height:28px;border-radius:50%;border:1.5px solid var(--line-2);
  display:grid;place-items:center;font-family:var(--mono);font-size:11px;font-weight:700;
  color:var(--dim);background:var(--surface);flex:none;transition:all .14s;
}
.workshop-route-item.is-current b{background:var(--accent);border-color:var(--accent);color:#fff}
.workshop-route-item.is-complete b{background:var(--green);border-color:var(--green);color:#fff}
.workshop-route-item span{display:block;min-width:0}
.workshop-route-item span strong{display:block;font-size:11.5px;line-height:1.35;color:var(--ink);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.workshop-route-item.is-current span strong{font-weight:700}
.workshop-route-item span small{display:block;font-size:10.5px;color:var(--dim);line-height:1.3;margin-top:2px}
.workshop-route-foot{padding:14px 16px;font-size:10.5px;color:var(--dim);line-height:1.5;text-align:center}

/* === 中央舞台 === */
.workshop-stage{
  grid-column:2;grid-row:1;overflow-y:auto;
  background:linear-gradient(rgba(24,35,45,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(24,35,45,.025) 1px,transparent 1px),var(--bg);
  background-size:24px 24px,24px 24px,auto;
  padding:0;position:relative;
}

/* === 任务简报屏（show=-1）双列布局 === */
.workshop-hero{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:56px;
  max-width:1280px;margin:0 auto;padding:54px 40px 48px;align-items:start;
}
.workshop-hero[hidden]{display:none}
.workshop-brief{min-width:0}
.workshop-lesson-id{display:flex;align-items:center;gap:8px;margin-bottom:14px;font-family:var(--mono);font-size:13px;color:var(--dim)}
.workshop-lesson-id span{padding:3px 10px;border:1px solid var(--line-2);border-radius:6px}
.workshop-lesson-id b{color:var(--green-text);font-weight:700;background:rgba(47,125,87,.1);padding:3px 10px;border-radius:6px;border:1px solid rgba(47,125,87,.3)}
.reader-problem-label{margin:0 0 12px;color:var(--accent-text);font-size:14px;font-weight:800}
.workshop-hero h1{font-size:clamp(30px,3vw,42px);line-height:1.25;letter-spacing:-.02em;margin:0 0 20px;text-wrap:balance;max-width:820px}
.workshop-lead{font-size:18px;line-height:1.7;color:var(--ink-2);max-width:820px;margin-bottom:20px}
.workshop-lead strong{color:var(--ink)}
.workshop-delivery{display:grid;gap:6px;margin:28px 0 24px;padding:14px 18px;border-radius:8px;background:var(--bg-2)}
.workshop-delivery span{color:var(--green-text);font-size:13px;font-weight:750}
.workshop-delivery strong{font-size:17px;line-height:1.6;font-weight:750}
.workshop-hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.reader-start{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:8px;background:var(--btn-bg);color:var(--btn-ink);font-size:15px;font-weight:800;border:0;cursor:pointer}
.reader-start:hover{background:var(--btn-hov)}
.workshop-hero-actions small{font-size:12.5px;color:var(--dim)}
/* 产物预览纸（简报屏右侧） */
.workshop-artifact{background:var(--surface);border:1px solid var(--line-2);border-radius:10px;padding:20px;box-shadow:var(--sh-card);position:relative}
.workshop-artifact::before{content:"交付预览";position:absolute;top:-10px;left:16px;background:var(--accent);color:#fff;font-family:var(--mono);font-size:10.5px;font-weight:700;padding:2px 10px;border-radius:4px;letter-spacing:.08em}
.workshop-artifact-paper>div{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.workshop-artifact-paper>div span{font-family:var(--mono);font-size:11px;color:var(--dim)}
.workshop-artifact-paper>div b{font-size:12px;color:var(--green-text);font-weight:700}
.workshop-artifact-paper h2{font-size:15px;line-height:1.5;margin:0 0 10px}
.workshop-artifact-paper ul{margin:0;padding-left:18px;font-size:13px;line-height:1.7;color:var(--ink-2)}
.workshop-artifact-paper li{margin:4px 0}

/* === 文章内容（工作纸） === */
.workshop-content[hidden]{display:none}
.workshop-content .reader-article{padding-top:38px;padding-bottom:48px;max-width:920px;margin:0 auto;padding-left:40px;padding-right:40px}
.workshop-content .reader-article .lesson-body{max-width:920px;color:var(--ink);font-size:18px;line-height:1.85}
.workshop-content .reader-article .lesson-body>p{max-width:880px;margin:16px 0;color:var(--ink-2)}
.workshop-content .reader-article .lesson-body>h2{margin:52px 0 14px;font-size:28px;line-height:1.4;letter-spacing:-.018em;text-wrap:balance}
.workshop-content .reader-article .lesson-body>h3{margin:34px 0 10px;font-size:21px;line-height:1.48}
.workshop-content .reader-article .lesson-body .hn{display:inline;margin-right:8px;color:var(--dim);font-family:inherit;font-size:.72em;font-weight:700}
.workshop-content .reader-article .lesson-body ul,.workshop-content .reader-article .lesson-body ol{margin:16px 0;padding-left:24px}
.workshop-content .reader-article .lesson-body li{margin:6px 0}
.workshop-content .reader-article .lesson-body blockquote{margin:20px 0;padding:12px 18px;background:var(--bg-2);border-radius:8px;color:var(--ink-2)}
.workshop-content .reader-article .lesson-body pre{margin:18px 0;padding:16px;background:var(--term);color:var(--term-ink);border-radius:8px;overflow-x:auto;font-family:var(--mono);font-size:14px;line-height:1.6}
.workshop-content .reader-article .lesson-body code{font-family:var(--mono);font-size:.88em;background:var(--bg-2);padding:2px 6px;border-radius:4px}
.workshop-content .reader-article .lesson-body pre code{background:transparent;padding:0}
.workshop-content .reader-article .lesson-body .grid-2,.workshop-content .reader-article .lesson-body .grid-3,.workshop-content .reader-article .lesson-body .grid-4{display:grid;gap:16px;margin:20px 0}
.workshop-content .reader-article .lesson-body .grid-2{grid-template-columns:repeat(2,1fr)}
.workshop-content .reader-article .lesson-body .grid-3{grid-template-columns:repeat(3,1fr)}
.workshop-content .reader-article .lesson-body .grid-4{grid-template-columns:repeat(4,1fr)}
.workshop-content .reader-article .lesson-body .btn-link{display:inline-block;padding:6px 14px;border-radius:6px;background:var(--accent);color:#fff;font-size:14px;font-weight:600}
.workshop-content .reader-article .lesson-body .cite-ref{color:var(--accent-text);font-weight:600;cursor:pointer;border-bottom:1px dashed var(--accent-text)}

/* === callout 语义变体（完整复刻源项目，按用途分色） === */
.workshop-content .reader-article .lesson-body .callout{margin:20px 0;padding:14px 18px;border-radius:8px;background:var(--bg-2);border:1px solid var(--line)}
/* 老师叮咛：蓝 */
.workshop-content .reader-article .teacher-call{margin:24px 0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--blue) 7%,var(--surface));border:1px solid color-mix(in srgb,var(--blue) 25%,var(--line))}
/* 风险/警告：金 */
.workshop-content .reader-article :is(.risk-note,.warning,.c02-rollout-note,.c03-tour-tip){margin:24px 0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--gold) 7%,var(--surface));border:1px solid color-mix(in srgb,var(--gold) 25%,var(--line))}
/* 视觉说明：绿 */
.workshop-content .reader-article .visual-note{margin:24px 0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--green) 7%,var(--surface));border:1px solid color-mix(in srgb,var(--green) 25%,var(--line))}
.workshop-content .reader-article .visual-note.info{background:color-mix(in srgb,var(--blue) 7%,var(--surface));border-color:color-mix(in srgb,var(--blue) 25%,var(--line))}
/* 课末桥接：绿顶边 */
.workshop-content .reader-article .lesson-close-bridge{margin-top:48px;padding:24px 0 0;border-top:2px solid var(--green);background:transparent}
/* 课前准备卡 */
.workshop-content .reader-article .prep-callout{margin:20px 0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--accent) 6%,var(--surface));border:1px solid color-mix(in srgb,var(--accent) 20%,var(--line))}
/* 新手提示 */
.workshop-content .reader-article .rookie-tip{margin:20px 0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--gold) 5%,var(--surface));border:1px dashed color-mix(in srgb,var(--gold) 30%,var(--line))}
/* 小互笔记 */
.workshop-content .reader-article .xh-note{margin:20px 0;padding:14px 18px 14px 56px;border-radius:8px;background:var(--bg-2);position:relative}
.workshop-content .reader-article .xh-note::before{content:"小互";position:absolute;left:14px;top:14px;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:700}
/* 产品事实/规则/术语/任务理由：蓝 */
.workshop-content .reader-article :is(.c02-news-card,.c02-rule,.c02-plain-term,.c02-why-task){margin:24px 0;padding:14px 18px;border-radius:8px;background:color-mix(in srgb,var(--blue) 7%,var(--surface));border:1px solid color-mix(in srgb,var(--blue) 25%,var(--line))}

/* === 四层厚度构件 === */
/* 深挖层：折叠"为什么"卡 */
.workshop-content .reader-article .deep-dive{margin:26px 0;border:1px dashed var(--line-2);border-radius:8px;background:color-mix(in srgb,var(--blue) 5%,var(--surface))}
.workshop-content .reader-article .deep-dive summary{cursor:pointer;padding:12px 16px;font-weight:700;font-size:14px;list-style:none}
.workshop-content .reader-article .deep-dive summary::-webkit-details-marker{display:none}
.workshop-content .reader-article .deep-dive summary::before{content:"🔍 深挖 · "}
.workshop-content .reader-article .deep-dive[open] summary{border-bottom:1px solid var(--line)}
.workshop-content .reader-article .deep-dive>div{padding:14px 16px}
/* 资产层：本课带走卡 */
.workshop-content .reader-article .takeaway-card{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin:28px 0;padding:15px 18px;border:1px solid var(--line-2);border-radius:8px;background:var(--surface)}
.workshop-content .reader-article .takeaway-card .tk-label{font-family:var(--mono);font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--green-text)}
.workshop-content .reader-article .takeaway-card a{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border:1.5px solid var(--green);border-radius:6px;color:var(--green-text);font-size:13px;font-weight:600}
.workshop-content .reader-article .takeaway-card a:hover{background:color-mix(in srgb,var(--green) 8%,transparent)}

/* === 一步一屏核心：只显示当前 step === */
.reader-article .lesson-body.is-workbench-ready>:not(.workbench-step):not(style):not(meta){display:none!important}
.workbench-step{display:none}
.workbench-step.is-active{display:block;animation:workbench-in .22s ease}
@keyframes workbench-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* === 验收屏（嵌套在 article .lesson-body 内） === */
.workshop-finish{max-width:920px;margin:0 auto;padding:48px 40px}
.workshop-finish[hidden]{display:none}
.workshop-finish .finish-kicker{font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--green);font-weight:700;margin-bottom:12px}
.workshop-finish h2{font-size:28px;line-height:1.35;margin:0 0 18px}
.workshop-finish .finish-lead{font-size:17px;line-height:1.75;color:var(--ink-2);margin-bottom:28px;max-width:820px}
.workshop-finish .finish-deliverable{font-size:15px;font-weight:700;color:var(--ink);margin:0 0 18px;padding:12px 16px;background:var(--bg-2);border-radius:8px}
/* V12 验收清单：真 checkbox 门控 */
.workshop-finish .finish-checks{list-style:none;margin:22px 0;padding:0;display:grid;gap:12px;font-size:15px}
.workshop-finish .finish-checks li{display:block}
.workshop-finish .finish-checks li::before{content:none}
.workshop-finish .finish-checks label{display:flex;align-items:flex-start;gap:10px;cursor:pointer;line-height:1.6}
.workshop-finish .finish-checks input{position:absolute;opacity:0;pointer-events:none}
.workshop-finish .finish-checks i{flex:0 0 20px;width:20px;height:20px;margin-top:1px;border-radius:6px;border:1.5px solid var(--line-2);background:transparent;display:grid;place-items:center;transition:all .14s;font-style:normal}
.workshop-finish .finish-checks input:checked+i{background:var(--green);border-color:var(--green)}
.workshop-finish .finish-checks input:checked+i::after{content:"✓";color:#fff;font-size:13px;font-weight:900}
.workshop-finish .finish-checks input:focus-visible+i{outline:2px solid var(--accent);outline-offset:2px}
/* 证据输入框（input 类型，不是 textarea） */
.workshop-finish .finish-evidence{display:grid;gap:8px;margin:0 0 18px;padding:16px 18px;border:1px solid var(--line-2);border-radius:8px;background:var(--surface)}
.workshop-finish .finish-evidence>span{font-size:13px;font-weight:850;color:var(--green-text)}
.workshop-finish .finish-evidence input{min-height:48px;width:100%;padding:0 14px;border:1px solid var(--line-2);border-radius:6px;background:transparent;color:inherit;font:15px/1.4 inherit}
.workshop-finish .finish-evidence input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.workshop-finish .finish-evidence small{color:var(--dim);font-size:13px;line-height:1.6}
/* AI 验收提示词（按钮 + 说明 + hidden textarea） */
.workshop-finish .verify-helper{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin:0 0 20px;padding:14px 18px;border:1px dashed var(--line-2);border-radius:8px}
.workshop-finish .verify-copy{min-height:40px;padding:0 18px;border:1.5px solid var(--ink);border-radius:6px;background:transparent;color:var(--ink);font-size:14px;font-weight:800;cursor:pointer;transition:all .15s}
.workshop-finish .verify-copy:hover{background:var(--ink);color:var(--surface)}
.workshop-finish .verify-copy.is-copied{border-color:var(--green);color:var(--green-text);background:transparent}
.workshop-finish .verify-note{flex:1;min-width:220px;font-size:14px;line-height:1.65;color:var(--dim)}
.workshop-finish .verify-prompt{width:100%;min-height:120px;font:13px/1.7 var(--mono);padding:12px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:inherit}
/* 交付物定位块 */
.workshop-finish .deliverable-locator{margin:18px 0 22px;padding:16px 20px;border:1px solid var(--line-2);border-radius:8px;background:color-mix(in srgb,var(--blue) 5%,var(--surface))}
.workshop-finish .deliverable-locator span{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--blue)}
.workshop-finish .deliverable-locator b{display:block;font-size:15px;margin-top:6px}
.workshop-finish .deliverable-locator p{margin:8px 0 0;font-size:14px;line-height:1.65;color:var(--dim)}
/* 加练层：挑战卡（完课后才显示） */
.workshop-finish .challenge-deck{margin:30px 0 8px;padding:18px 22px 10px;border:1.5px solid var(--gold);border-radius:10px;background:color-mix(in srgb,var(--gold) 6%,var(--surface))}
.workshop-finish .challenge-deck[hidden]{display:none}
.workshop-finish .challenge-deck .challenge-deck-head{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.workshop-finish .challenge-deck .challenge-deck-head span{font-family:var(--mono);font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--gold)}
.workshop-finish .challenge-deck article{margin:8px 0;padding:10px 0;border-top:1px dashed var(--line)}
.workshop-finish .challenge-deck article:first-of-type{border-top:0}
/* 完课按钮 */
.workshop-finish .btn-done{min-height:48px;padding:0 24px;border-radius:8px;border:0;background:var(--btn-bg);color:var(--btn-ink);font-size:16px;font-weight:800;cursor:pointer;transition:background .12s}
.workshop-finish .btn-done:hover:not(:disabled){background:var(--btn-hov)}
.workshop-finish .btn-done:disabled{opacity:.5;cursor:not-allowed}
.workshop-finish .btn-done.is-done{background:var(--green)}
/* 重学链接 */
.workshop-finish .relearn-link{margin-left:16px;padding:0;border:0;background:none;color:var(--dim);font-size:14px;text-decoration:underline dotted;text-underline-offset:3px;cursor:pointer}
.workshop-finish .relearn-link:hover{color:var(--ink)}
.workshop-finish .relearn-link[hidden]{display:none}
/* 下一课出口卡 */
.workshop-finish .studio-lesson-pn{margin-top:22px}
.workshop-finish .studio-pn-next{display:flex;flex-direction:column;justify-content:center;gap:4px;min-height:0;padding:14px 18px;border:1px solid var(--line-2);border-radius:8px;background:var(--surface);text-align:left;transition:border-color .15s,background .15s}
.workshop-finish .studio-pn-next span{font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--dim)}
.workshop-finish .studio-pn-next strong{font-size:15px;line-height:1.55}
.workshop-finish .studio-pn-next:hover{border-color:var(--green)}
.workshop-finish .studio-pn-next.is-armed{border-color:var(--green);background:color-mix(in srgb,var(--green) 9%,var(--surface))}
.workshop-finish .studio-pn-next.is-armed span{color:var(--green-text)}

/* === 右侧教练面板 === */
.workshop-guide{
  grid-column:3;grid-row:1;border-left:1px solid var(--line);
  background:var(--bg-2);overflow-y:auto;padding:22px 20px;
}
.workshop-guide[hidden]{display:none}
.workshop-guide [data-coach-kicker]{font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--dim);font-weight:700;margin:0 0 6px;display:block}
.workshop-guide [data-reader-step]{font-size:17px;line-height:1.4;display:block;font-weight:700;color:var(--ink)}
.workshop-guide [data-coach-copy]{font-size:14px;line-height:1.7;color:var(--ink-2);margin:14px 0;display:block}
.workshop-guide-output{margin:14px 0;padding:12px 14px;background:var(--surface);border-radius:8px;border:1px solid var(--line)}
.workshop-guide-output span{display:block;font-size:13px;color:var(--dim);font-weight:700;margin-bottom:4px}
.workshop-guide-output b{font-size:14px;line-height:1.5;color:var(--ink);font-weight:600}
.reader-help{margin-top:14px;border-top:1px solid var(--line);padding-top:14px}
.reader-help summary{display:flex;align-items:center;min-height:40px;color:var(--ink-2);font-size:14px;font-weight:750;cursor:pointer;list-style:none}
.reader-help summary::-webkit-details-marker{display:none}
.reader-help summary::before{content:"💡 ";font-size:14px}
.reader-help[open] summary{margin-bottom:8px}
.workshop-guide [data-coach-help]{margin:0;color:var(--dim);font-size:13.5px;line-height:1.7}
.workshop-guide-checks{margin-top:14px}
.workshop-guide-checks>span{display:block;font-family:var(--mono);font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--dim);margin-bottom:8px}
.workshop-guide-checks ul{list-style:none;padding:0;margin:0}
.workshop-guide-checks li{display:flex;align-items:flex-start;gap:9px;padding:8px 0;font-size:14px;line-height:1.5;border-bottom:1px dashed var(--line);cursor:pointer}
.workshop-guide-checks li:last-child{border-bottom:none}
.workshop-guide-checks .gc-box{flex:0 0 17px;width:17px;height:17px;margin-top:2px;border-radius:5px;border:1.5px solid var(--line-2);display:grid;place-items:center;flex:none}
.workshop-guide-checks li.is-on .gc-box{background:var(--green);border-color:var(--green)}
.workshop-guide-checks li.is-on .gc-box::after{content:"✓";color:#fff;font-size:11px;font-weight:900}
.workshop-guide-checks li.is-on .gc-tt{color:var(--dim);text-decoration:line-through}
.workshop-guide.at-finish .workshop-guide-checks{display:none}
.workshop-guide.at-finish .guide-finish-note{display:block}
.guide-finish-note{display:none;font-size:14px;line-height:1.7;color:var(--ink-2);padding:14px;background:var(--surface);border-radius:8px}
.side-progress{margin:18px 0 0;padding-top:14px;border-top:1px solid var(--line)}
.sp-txt{font-family:var(--mono);font-size:13px;color:var(--dim);font-weight:700}
.sp-bar{height:5px;background:var(--surface);border-radius:3px;overflow:hidden;margin-top:6px}
.sp-bar::after{content:"";display:block;height:100%;width:var(--pct,0%);background:var(--accent);border-radius:3px;transition:width .3s}
.workshop-guide small.privacy-note{display:block;margin-top:10px;font-size:12px;color:var(--dim);line-height:1.5}

/* === 底部栏 === */
.workshop-bottombar{
  grid-column:1 / -1;grid-row:2;display:grid;grid-template-columns:auto 1fr auto;
  align-items:center;gap:16px;padding:0 20px;border-top:1px solid var(--line);
  background:var(--surface);flex:none;
}
.workbench-prev,.workbench-next{display:inline-flex;align-items:center;min-height:44px;padding:0 20px;border-radius:8px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font-size:15px;font-weight:700;cursor:pointer;transition:all .12s}
.workbench-prev:hover:not(:disabled),.workbench-next:hover:not(:disabled){border-color:var(--accent);color:var(--accent-text)}
.workbench-prev:disabled,.workbench-next:disabled{opacity:.4;cursor:not-allowed}
.workbench-next{background:var(--accent);color:#fff;border-color:var(--accent)}
.workbench-next:hover:not(:disabled){background:var(--accent-hov);border-color:var(--accent-hov);color:#fff}
.workbench-next.is-next-lesson{background:var(--green);border-color:var(--green)}
.workbench-next.is-next-lesson:hover{filter:brightness(1.08)}
[data-workbench-hint]{font-size:13px;color:var(--dim);text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 暗色适配 */
html.dark .workshop-stage{background:linear-gradient(rgba(232,228,216,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(232,228,216,.03) 1px,transparent 1px),var(--bg)}
html.dark .workshop-content .reader-article .lesson-body pre{background:var(--term)}

/* === 响应式 === */
@media(max-width:1179px){
  .workshop-shell{grid-template-columns:72px minmax(0,1fr) 260px}
  .workshop-route-item span{display:none}
  .workshop-route-item{grid-template-columns:30px;justify-content:center}
  .workshop-route-title{display:none}
  .workshop-hero{grid-template-columns:1fr;gap:24px}
  .workshop-artifact{display:none}
}
@media(max-width:960px){
  .workshop-shell{grid-template-columns:0 minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto 64px}
  .workshop-route{display:none}
  .workshop-guide{grid-column:1 / -1;grid-row:2;max-height:200px;border-left:0;border-top:1px solid var(--line)}
  .reader-outline{display:none}
  .workshop-toolbar{grid-template-columns:auto 1fr auto;gap:10px}
}
@media(max-width:759px){
  .workshop-top-progress span{width:60px}
  .workshop-hero,.workshop-content .reader-article,.workshop-finish{padding:32px 18px}
  .workshop-content .reader-article .lesson-body{font-size:16px;line-height:1.78}
  .workshop-content .reader-article .lesson-body>h2{font-size:22px}
}

/* ===== 内容视觉包装：表格、卡片网格、列表、占位符 ===== */

/* 美化表格 .table-wrap */
.lesson-body .table-wrap{margin:20px 0;overflow-x:auto;border-radius:10px;box-shadow:var(--sh-card);background:var(--bg-1)}
.lesson-body .table-wrap table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.6}
.lesson-body .table-wrap thead{background:var(--tint);color:var(--ink)}
.lesson-body .table-wrap th{padding:12px 16px;text-align:left;font-weight:600;white-space:nowrap}
.lesson-body .table-wrap td{padding:10px 16px;border-top:1px solid var(--line)}
.lesson-body .table-wrap tbody tr:nth-child(even){background:rgba(0,0,0,.015)}
.lesson-body .table-wrap tbody tr:hover{background:var(--tint)}
.dark .lesson-body .table-wrap tbody tr:nth-child(even){background:rgba(255,255,255,.03)}

/* 卡片网格 .card-grid（3列表格自动转换） */
.lesson-body .card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:20px 0}
.lesson-body .data-card{background:var(--bg-1);border:1px solid var(--line);border-radius:10px;padding:16px;box-shadow:var(--sh-card);display:flex;flex-direction:column;gap:8px;transition:transform .2s,box-shadow .2s}
.lesson-body .data-card:hover{transform:translateY(-2px);box-shadow:var(--sh-pop)}
.lesson-body .dc-label{font-weight:700;font-size:15px;color:var(--ink);line-height:1.4}
.lesson-body .dc-body{font-size:14px;color:var(--dim);line-height:1.6;flex:1}
.lesson-body .dc-tag{display:inline-flex;align-self:flex-start;padding:4px 12px;border-radius:6px;font-size:13px;font-weight:600;background:var(--tint);color:var(--ink)}
.lesson-body .dc-tag:empty{display:none}

/* 列表视觉增强 .ticks（凿子勾列表） */
.lesson-body ul.ticks{list-style:none;padding:0;margin:14px 0}
.lesson-body ul.ticks>li{position:relative;padding:6px 0 6px 26px;font-size:15px;line-height:1.7}
.lesson-body ul.ticks>li::before{content:"";position:absolute;left:4px;top:13px;width:12px;height:7px;border-left:2.5px solid var(--accent);border-bottom:2.5px solid var(--accent);transform:rotate(-45deg)}
.dark .lesson-body ul.ticks>li::before{border-color:var(--accent-text)}

/* 有序列表 .steps-ol */
.lesson-body ol.steps-ol{list-style:none;counter-reset:ol-step;padding:0;margin:14px 0}
.lesson-body ol.steps-ol>li{position:relative;padding:8px 0 8px 34px;counter-increment:ol-step;font-size:15px;line-height:1.7}
.lesson-body ol.steps-ol>li::before{content:counter(ol-step);position:absolute;left:0;top:8px;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.dark .lesson-body ol.steps-ol>li::before{background:var(--accent-text);color:var(--ink)}

/* 图片占位符 */
.lesson-body figure.img-placeholder{margin:16px 0;padding:24px;border-radius:10px;background:var(--bg-2);border:1px dashed var(--line);text-align:center}
.lesson-body figure.img-placeholder .ip-icon{display:block;font-size:28px;margin-bottom:6px}
.lesson-body figure.img-placeholder figcaption{font-size:13px;color:var(--dim)}
.lesson-body figure.img-placeholder small{font-size:11px;color:var(--line-2)}

/* 视频占位符 */
.lesson-body figure.video-placeholder{margin:16px 0;padding:32px;border-radius:10px;background:linear-gradient(135deg,var(--term-bg),var(--term-line));border:1px solid var(--term-line);text-align:center;color:var(--term-text)}
.lesson-body figure.video-placeholder .vp-icon{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:var(--term-accent);color:var(--term-bg);font-size:18px;margin-bottom:8px}
.lesson-body figure.video-placeholder figcaption{font-size:13px;color:var(--term-text)}

/* grid 布局美化 */
.lesson-body .grid-2,.lesson-body .grid-3,.lesson-body .grid-4{display:grid;gap:14px;margin:16px 0}
.lesson-body .grid-2{grid-template-columns:repeat(2,1fr)}
.lesson-body .grid-3{grid-template-columns:repeat(3,1fr)}
.lesson-body .grid-4{grid-template-columns:repeat(4,1fr)}
.lesson-body .grid-2>div,.lesson-body .grid-3>div,.lesson-body .grid-4>div{background:var(--bg-1);border:1px solid var(--line);border-radius:8px;padding:16px;box-shadow:var(--sh-card)}
@media(max-width:759px){
  .lesson-body .grid-2,.lesson-body .grid-3,.lesson-body .grid-4{grid-template-columns:1fr}
  .lesson-body .card-grid{grid-template-columns:1fr}
}

/* btn-link 美化 */
.lesson-body .btn-link{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;background:var(--accent);color:#fff;font-size:14px;font-weight:600;text-decoration:none;margin:8px 0;transition:transform .2s,box-shadow .2s}
.lesson-body .btn-link:hover{transform:translateY(-1px);box-shadow:var(--sh-pop)}
.dark .lesson-body .btn-link{background:var(--accent-text);color:var(--ink)}

/* code/pre 美化 */
.lesson-body code{padding:2px 6px;border-radius:4px;background:var(--bg-2);font-size:14px;font-family:ui-monospace,monospace}
.lesson-body pre{padding:16px;border-radius:8px;background:var(--term-bg);color:var(--term-text);overflow-x:auto;font-size:14px;line-height:1.6}
.lesson-body pre code{background:none;padding:0;color:inherit}

/* cite-ref 美化 */
.lesson-body .cite-ref{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:6px;background:var(--tint);color:var(--accent-text);font-size:14px;font-weight:600;text-decoration:none;cursor:pointer;transition:background .2s}
.lesson-body .cite-ref:hover{background:var(--accent-hov);color:#fff}

/* blockquote 基础（callout 语义变体已在上方定义） */
.lesson-body blockquote.callout{margin:14px 0}