/* 수업 — 기존 ‘분필과 코드’의 글꼴·색·칠판을 계승합니다. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.approach{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.approach article{border-top:1px solid var(--line-2);padding-top:18px}
.approach .step{font:400 30px/1 var(--hand);color:var(--accent)}
.approach h3{font:600 18px/1.4 var(--display);margin:10px 0 8px}
.approach p{color:var(--ink-2);font-size:14.5px;margin:0;max-width:42ch}
.story-filters{margin-bottom:20px}
.chip{min-height:44px}
.projects{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.story{overflow:hidden;border-top:4px solid var(--c);min-width:0}
.story[hidden],.empty-records[hidden],#showMore[hidden],#actsWrap[hidden]{display:none}
.story-feature{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.story-main{padding:clamp(22px,3vw,36px)}
.story-feature .story-main{border-right:1px solid var(--line)}
.story-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.story-number{font:400 32px/1 var(--hand);color:var(--accent)}
.story-when{font:400 12px/1.5 var(--sans);color:var(--muted)}
.story-topic{display:inline-block;font:500 12px/1.3 var(--sans);padding:4px 9px;border:1px solid var(--line-2);border-radius:999px;color:var(--ink-2)}
.story-kicker{font:400 24px/1.15 var(--hand);color:var(--accent);margin:0 0 8px}
.story h3{font:600 clamp(21px,2.3vw,27px)/1.45 var(--display)}
.story-question{font:500 16px/1.6 var(--sans);color:var(--ink);margin:18px 0 10px;padding-left:14px;border-left:3px solid var(--c)}
.story-focus{margin:0;font-size:14.5px;color:var(--ink-2)}
.story-outcomes{margin:22px 0 0}
.story-outcomes dt,.resource-label{font:500 12px/1.4 var(--sans);color:var(--muted);margin:0 0 8px}
.story-outcomes dd{margin:0}
.story-outcomes ul{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}
.story-outcomes li{font-size:12.5px;color:var(--accent);background:var(--accent-soft);padding:5px 10px;border-radius:5px}
.story-media{margin:24px 0 0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface-2)}
.story-media img{width:100%;height:auto;aspect-ratio:16/10;object-fit:contain}
.story-media figcaption{padding:9px 12px;font-size:12px;line-height:1.5;color:var(--muted);border-top:1px solid var(--line);background:var(--surface)}
.story-media a{color:var(--accent);text-underline-offset:3px}
.story-card .story-media{max-width:100%}
.story-card .story-media img{height:clamp(180px,21vw,260px);aspect-ratio:auto}
.lesson-map{list-style:none;margin:0;padding:24px 18px;min-height:clamp(180px,21vw,260px);display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:center;gap:16px;background:var(--accent-soft)}
.lesson-map li{min-width:0;border-top:1px dashed var(--line-2);padding-top:14px}
.lesson-map span{display:block;font:400 32px/1 var(--hand);color:var(--accent);margin-bottom:12px}
.lesson-map b{display:block;font:500 13.5px/1.6 var(--sans);color:var(--ink-2)}
.story-resources{margin-top:22px}
.story-resources .tags{margin-bottom:12px}
.story-process{padding:clamp(22px,3vw,36px);background:var(--surface-2)}
.process-heading{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:24px}
.process-heading h4{margin:0;font:600 18px/1.4 var(--display)}
.process-heading span{font:400 24px/1 var(--hand);color:var(--accent)}
.lesson-flow{list-style:none;margin:0;padding:0;display:grid;gap:0}
.lesson-flow li{position:relative;display:grid;grid-template-columns:30px minmax(0,1fr);gap:14px;padding-bottom:22px}
.lesson-flow li:last-child{padding-bottom:0}
.lesson-flow li:not(:last-child)::before{content:"";position:absolute;left:14px;top:33px;bottom:5px;border-left:1px dashed var(--line-2)}
.lesson-flow .flow-number{position:relative;display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--line-2);border-radius:50%;font:500 12px/1 var(--mono);background:var(--surface);color:var(--accent)}
.lesson-flow b{display:block;font-weight:600;font-size:14.5px;margin-top:2px}
.lesson-flow p{font-size:13.5px;color:var(--ink-2);margin:5px 0 0}
.lesson-flow a{display:inline-block;font-size:12.5px;color:var(--accent);text-underline-offset:3px;margin-top:6px}
.story-details{border-top:1px solid var(--line);margin-top:24px;padding-top:4px}
.story-details summary{cursor:pointer;font:500 14px/1.5 var(--sans);padding:12px 0;color:var(--accent);min-height:44px}
.story-details[open] summary{margin-bottom:12px}
.story-details .lesson-flow{padding-top:4px}
.story-links{list-style:none;margin:18px 0 0;padding:12px 0 0;border-top:1px dashed var(--line);display:flex;gap:8px 18px;flex-wrap:wrap}
.story-links a{font-size:13px;color:var(--accent);text-underline-offset:3px}
.rhythm{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-radius:var(--radius);overflow:hidden;background:var(--board);color:var(--board-ink)}
.rhythm li{padding:22px 20px;border-right:1px dashed var(--board-line)}
.rhythm li:last-child{border-right:0}
.rhythm b{display:block;font:400 28px/1.1 var(--hand);color:var(--chalk);margin-bottom:12px}
.rhythm span{font-size:14px;color:var(--board-ink)}
.record-controls{padding:24px}
.record-search{display:grid;grid-template-columns:auto minmax(140px,1fr) auto;align-items:center;gap:12px;margin-bottom:24px}
.record-search label{font-size:13px;font-weight:500;color:var(--ink-2)}
.record-search input{width:100%;min-height:44px;border:1px solid var(--line-2);border-radius:8px;padding:10px 14px;background:var(--surface);color:var(--ink);font:400 15px/1.5 var(--sans)}
.record-search input::placeholder{color:var(--muted)}
.filter{display:grid;grid-template-columns:42px minmax(0,1fr);gap:12px;align-items:start;margin-top:14px}
.filter .label{color:var(--muted);padding-top:16px}
.record-status{font-size:13px;color:var(--muted);margin:16px 0 12px}
.acts-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.acts{width:100%;border-collapse:collapse;font-size:14px}
.acts th{text-align:left;background:var(--surface-2);font:500 12px/1.4 var(--sans);color:var(--muted);padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap}
.acts td{padding:16px 18px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
.acts tr:last-child td{border-bottom:0}
.acts td.d{font:400 12px/1.6 var(--sans);color:var(--muted);min-width:118px}
.acts td.d span{display:block;font:400 12px/1.6 var(--mono);color:var(--ink-2);margin-top:4px}
.acts td.s{width:140px;font-size:13px}
.acts td.s i{display:inline-block;width:7px;height:7px;border-radius:2px;background:var(--c,var(--line-2));margin-right:6px}
.acts td.n{color:var(--ink);font-weight:500;width:45%}
.acts td.tools{font-size:13px;color:var(--muted)}
.empty-records{margin:0;padding:30px 24px;text-align:center;color:var(--muted)}
.record-more{display:flex;justify-content:center;margin-top:18px}
.record-source{font-size:12px;color:var(--muted);margin:18px 0 0;max-width:90ch}
@media(max-width:960px){
  .rhythm{grid-template-columns:repeat(3,minmax(0,1fr))}
  .rhythm li{border-bottom:1px dashed var(--board-line)}
  .rhythm li:nth-child(3){border-right:0}
  .rhythm li:nth-child(n+4){border-bottom:0}
}
@media(max-width:720px){
  .approach{grid-template-columns:1fr;gap:22px}
  .approach article{display:grid;grid-template-columns:34px 1fr;gap:0 14px}
  .approach .step{grid-row:span 2;margin-top:4px}
  .approach h3{margin:0 0 8px}
  .approach p{max-width:none}
  .projects,.story-feature{grid-template-columns:1fr}
  .story-feature .story-main{border-right:0}
  .story-process{border-top:1px solid var(--line)}
  .story-main,.story-process{padding:22px}
  .record-search{grid-template-columns:1fr auto;gap:10px}
  .record-search label{grid-column:1/-1}
  .record-controls{padding:18px}
  .filter{grid-template-columns:1fr;gap:8px}
  .filter .label{padding-top:4px}
  .acts,.acts tbody{display:block;width:100%}
  .acts thead{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
  .acts tr{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);padding:18px;gap:8px 14px;border-bottom:1px solid var(--line)}
  .acts tr:last-child{border-bottom:0}
  .acts td{display:block;border:0;padding:0;width:auto!important;min-width:0!important}
  .acts td.d span{display:inline;margin-left:8px}
  .acts td.s{text-align:right}
  .acts td.n,.acts td.tools{grid-column:1/-1}
  .acts td.n{font-size:15px;margin-top:4px}
  .acts td.tools::before{content:"도구 · ";font-weight:500}
}
@media(max-width:480px){
  .rhythm{grid-template-columns:1fr}
  .rhythm li{display:grid;grid-template-columns:92px 1fr;gap:14px;border-right:0;border-bottom:1px dashed var(--board-line)!important;padding:18px}
  .rhythm li:last-child{border-bottom:0!important}
  .rhythm b{font-size:25px;margin:0}
  .record-search{grid-template-columns:1fr}
  .record-search .btn{justify-self:start}
  .acts tr{grid-template-columns:1fr}
  .acts td.s{text-align:left}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}