/* Public exhibition: subject-led blue/pink identity, responsive from 320px. */
body.public-app{--bg:var(--color-paper);--ink:var(--color-ink);--sub:var(--color-muted);--line:var(--color-rule);--deep:var(--color-accent);--mint:var(--color-blue);--orange:var(--color-note);--shadow:0 8px 24px #2030520a;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.7;padding-bottom:env(safe-area-inset-bottom)}
.public-app :is(a,button,input,textarea,select):focus-visible{outline:3px solid var(--color-focus);outline-offset:4px}
.public-app :is(a,button,input,textarea,select){touch-action:manipulation}
.public-app :is(h1,h2,h3,p){overflow-wrap:anywhere}
.public-app :is(h1,h2,h3){text-wrap:balance;letter-spacing:-.045em}
.public-app :is(.portal,.page,.portal-gallery-heading){padding-block:40px}
.public-app>.topbar,.public-app>main,.public-app>.footer{width:100%;max-width:1240px;margin-inline:auto;padding-inline:40px}
.public-app>.topbar{height:96px;border-bottom:1px solid var(--line);gap:24px}
.public-app .brand{gap:12px;min-width:0}
.public-app .brand-mark{background:var(--deep);border-radius:14px;width:44px;height:44px;line-height:44px;font-size:25px;flex-shrink:0}
.public-app .brand-mark span{color:var(--color-note)}
.public-app .brand b{font-size:18px;white-space:nowrap}
.public-app .brand small{font-size:12px;letter-spacing:0}
.public-app .top-actions{gap:16px}
.public-app .draft-badge{color:var(--sub);background:#E9EEF6;font-size:13px;padding:5px 12px}
.public-app .text-link{display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:var(--deep);gap:8px}
.public-app>.bottomnav{position:relative;inset:auto;transform:none;max-width:1240px;margin:auto;padding:0 40px;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;background:transparent;backdrop-filter:none;gap:24px;justify-content:flex-start}
.public-app>.bottomnav a{flex:none;flex-direction:row;min-height:60px;min-width:0;padding:12px 4px;gap:8px;font-size:14px;border-radius:0;border-bottom:3px solid transparent;color:var(--sub)}
.public-app>.bottomnav a.active{color:var(--deep);background:transparent;border-bottom-color:var(--deep);font-weight:700}
.public-app>.bottomnav a:hover{color:var(--deep)}
.public-app>.bottomnav .icon{width:20px;height:20px}
.public-app>main{min-height:65vh;padding-bottom:24px}
.public-app>.footer{border-top:1px solid var(--line);padding-top:28px;padding-bottom:40px}
.public-app>.footer span{font-size:14px}
.public-app>.footer small{font-size:13px;line-height:1.8;max-width:70ch;color:var(--sub)}
.public-app #toast{bottom:28px;max-width:min(90vw,640px);font-size:14px;background:var(--ink);transition:opacity var(--dur-hover) var(--ease-out),transform var(--dur-hover) var(--ease-out)}
/* One memorable element: the actual lesson question, on a classroom note. */
.portal{color:var(--ink)}
.portal-masthead{padding-bottom:32px;border-bottom:1px solid var(--line)}
.portal-kicker{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 24px;color:var(--sub);font-size:14px}
.portal h1{font-size:var(--text-title);line-height:1.25;margin:20px 0;word-break:keep-all}
.portal h2{font-size:var(--text-section);line-height:1.4}
.portal p{line-height:1.8}
.portal-welcome{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:center;padding:16px 0 44px}
.portal-welcome .portal-masthead{border:0;padding:0}
.portal-welcome h1{font-size:clamp(2.5rem,5.2vw,4.25rem);line-height:1.16;letter-spacing:-.065em;margin:24px 0}
.portal-intro{font-size:16px;color:var(--sub);max-width:36ch;margin:0 0 24px}
.portal-lesson{font-size:20px;line-height:1.65;font-weight:700;margin:0;max-width:40ch}
.portal-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--sub);margin-top:20px}
.portal-meta span{display:inline-flex;align-items:center;gap:6px}
.portal-meta .icon{width:17px;height:17px}
.lesson-note{position:relative;background:var(--color-blue);border-radius:8px 30px 30px 30px;padding:36px 32px;min-width:0}
.lesson-note::before{content:'';position:absolute;top:-10px;right:30px;width:56px;height:20px;background:var(--color-note);transform:rotate(5deg)}
.lesson-note-label{font-size:14px;color:var(--color-blue-ink);font-weight:700;display:flex;align-items:center;gap:8px}
.lesson-note h2{font-family:var(--font-question);font-weight:600;font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.65;margin:20px 0 28px}
.lesson-note-footer{display:flex;gap:16px;justify-content:space-between;align-items:center;border-top:1px solid #2548A633;padding-top:16px;font-size:14px;color:var(--color-blue-ink)}
.lesson-note-footer .icon{width:28px;height:28px}
.portal-primary{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:0 0 40px}
.portal-entry{display:grid;grid-template-columns:1fr auto;gap:24px;min-width:0;padding:28px 32px;background:var(--color-surface);border:1px solid var(--line);border-radius:18px;color:var(--ink);transition:background-color var(--dur-hover),border-color var(--dur-hover)}
.portal-entry:hover{border-color:var(--deep);background:#EDF2FF}
.portal-entry h2{margin:12px 0 8px;font-size:26px}
.portal-entry p{font-size:15px;margin:0;max-width:36ch;color:var(--sub)}
.portal-entry .entry-audience{font-size:14px;font-weight:600;color:var(--sub)}
.portal-entry .entry-arrow{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--color-blue);border-radius:50%;align-self:center}
.portal-entry.observer{background:var(--deep);color:white;border-color:var(--deep)}
.portal-entry.observer :is(p,.entry-audience){color:#EEF2FF}
.portal-entry.observer .entry-arrow{background:#FFFFFF24;color:white}
.portal-entry.observer:hover{background:#1D3CA8;border-color:#1D3CA8}
.portal-entry:active{border-color:var(--ink)}
.portal-directory{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;margin-block:32px}
.portal-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 0;border-block:1px solid var(--line);min-width:0}
.portal-row strong{font-size:22px;letter-spacing:-.04em}
.portal-row p{font-size:15px;color:var(--sub);margin:4px 0 0}
.portal-row>div{min-width:0}
.portal-row>.icon{color:var(--deep)}
.portal-row:hover strong{text-decoration:underline;text-underline-offset:5px}
.portal-row .tags{margin-top:12px;gap:8px}
.portal-staff{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;color:var(--sub);font-size:14px;margin-top:28px}
.portal-staff a{display:inline-flex;min-height:44px;align-items:center;color:var(--deep)}
.portal-notice{padding:18px 20px;background:var(--color-blue);color:var(--color-blue-ink);border-radius:12px;font-size:15px;margin:24px 0}
.portal-flow{list-style:none;margin:28px 0;padding:0;counter-reset:phase}
.portal-flow li{counter-increment:phase;display:grid;grid-template-columns:44px 1fr auto;gap:20px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line)}
.portal-flow li::before{content:counter(phase,decimal-leading-zero);font-size:20px;font-weight:700;color:var(--deep)}
.portal-flow p{margin:4px 0 0;color:var(--sub);font-size:16px;max-width:60ch}
.portal-flow small{font-size:14px;color:var(--sub);white-space:nowrap}
.portal-guide{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-block:32px}
.portal-guide section{border-top:1px solid var(--line);padding-top:16px}
.portal-form{max-width:800px;margin-block:32px}
.portal-form .field{margin-bottom:24px}
.portal-feedback{min-height:1.75em;color:var(--deep);font-size:14px}
.portal-event-qr{margin-block:32px}
.portal-event-qr .qr-box{max-width:224px}
/* Shared gallery, detail, resources, local preparation and QR. */
.public-app .portal-gallery-heading{display:flex;flex-direction:column;align-items:flex-start;gap:8px;border-bottom:1px solid var(--line);margin-bottom:32px}
.public-app .portal-gallery-heading h1{font-size:var(--text-title);margin:8px 0}
.public-app .portal-gallery-heading p{color:var(--sub);font-size:16px;margin:0;max-width:60ch}
.public-app .area-key{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}
.public-app .area-label{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border-radius:6px;background:var(--color-blue);color:var(--color-blue-ink);font-size:13px;font-weight:700;line-height:1.6}
.public-app .area-label[data-area="연구학교"]{background:var(--color-pink);color:var(--color-pink-ink)}
.public-app .section-head{gap:24px;align-items:center;margin-bottom:24px}
.public-app .section-head h2{font-size:24px}
.public-app .section-head p{font-size:15px;color:var(--sub)}
.public-app .search{width:320px;background:white;border-color:#95A5BF;border-radius:12px}
.public-app .search input{font-size:16px;min-height:48px;min-width:0;border-color:#95A5BF}
.public-app .search:focus-within{outline:3px solid var(--color-focus);outline-offset:3px}
.public-app .filters{margin-bottom:24px;gap:16px;flex-wrap:wrap}
.public-app .chips{gap:8px;flex-wrap:wrap}
.public-app .chip{min-height:44px;font-size:14px;padding:8px 16px;border:1px solid #95A5BF;border-radius:10px;background:white;color:var(--sub);transition:background-color var(--dur-hover)}
.public-app .chip:hover{background:var(--color-blue)}
.public-app .chip[aria-pressed="true"]{background:var(--deep);border-color:var(--deep);color:white;font-weight:700}
.public-app .result-count{font-size:14px;color:var(--sub);padding:0}
.public-app .cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.public-app .card{display:flex;flex-direction:column;min-width:0;border:1px solid var(--line);border-radius:18px;box-shadow:none;background:white;transition:border-color var(--dur-hover),box-shadow var(--dur-hover)}
.public-app .card:hover{transform:none;border-color:var(--deep);box-shadow:var(--shadow)}
.public-app .card-art{height:176px;min-height:176px;background:var(--color-blue);color:var(--color-blue-ink);overflow:hidden}
.public-app .card[data-area="연구학교"] .card-art{background:var(--color-pink);color:var(--color-pink-ink)}
.public-app .card-art::before{background:#FFFFFF70;width:100px;height:100px;left:calc(50% - 50px);top:calc(50% - 50px);transform:rotate(-10deg);border-radius:26px}
.public-app .card-art>.icon{width:56px;height:56px;color:inherit}
.public-app .card-art .big-number{font-size:36px;top:12px;left:20px;color:inherit;opacity:.5}
.public-app .card-art .period-pill{font-size:12px;top:16px;right:16px;padding:4px 8px;background:#FFFFFFB8;color:var(--ink);max-width:65%;white-space:normal}
.public-app .card-art .art-caption{display:none}
.public-app .card-body{padding:24px;display:flex;flex-direction:column;flex:1;min-width:0}
.public-app .card h3{font-size:23px;line-height:1.5;margin:14px 0 12px;white-space:pre-line}
.public-app .card p{font-size:15px;line-height:1.8;margin:0 0 20px;min-height:0;display:block;overflow:visible;-webkit-line-clamp:unset}
.public-app .card-bottom{margin-top:auto;padding-top:16px;gap:8px;font-size:13px;color:var(--sub)}
.public-app .round-arrow{width:30px;height:30px;background:var(--color-blue);color:var(--deep);flex-shrink:0}
.public-app .tag{font-size:12px;color:var(--sub);background:#F0F3F8;padding:3px 6px}
.public-app .page-heading h1{font-size:var(--text-title)}
.public-app .page-heading p{font-size:16px;max-width:70ch}
.public-app :is(.eyebrow,.label){font-size:14px;letter-spacing:0;text-transform:none;color:var(--sub)}
.public-app .eyebrow::before{display:none}
.public-app .breadcrumb{font-size:14px;flex-wrap:wrap;gap:8px}
.public-app .breadcrumb a{min-height:44px;display:inline-flex;align-items:center;color:var(--deep)}
.public-app .detail-hero{padding:40px;background:var(--color-blue);color:var(--ink);border-radius:24px;grid-template-columns:minmax(0,1fr) 160px}
.public-app .detail-hero[data-area="연구학교"]{background:var(--color-pink)}
.public-app .detail-hero h1{font-size:var(--text-title);line-height:1.35;max-width:22ch}
.public-app .detail-hero p{font-size:16px;max-width:65ch;color:var(--ink)}
.public-app .detail-eyebrow{font-size:14px;color:var(--sub)}
.public-app .detail-icon{width:160px;height:160px;background:#FFFFFF80;color:var(--deep)}
.public-app .detail-tabs{gap:16px;flex-wrap:wrap;padding:16px 0}
.public-app .detail-tabs a{display:inline-flex;align-items:center;min-height:44px;font-size:15px;padding:8px;color:var(--deep)}
.public-app .detail-grid{grid-template-columns:minmax(0,1fr) 300px;gap:28px}
.public-app .panel{padding:28px;border:1px solid var(--line);border-radius:18px;box-shadow:none}
.public-app .panel h2{font-size:22px}
.public-app .panel p{font-size:16px;line-height:1.8}
.public-app .question{font-family:var(--font-question);font-size:26px;line-height:1.7;color:var(--ink)}
.public-app .process-row{font-size:16px;padding:16px 0}
.public-app .process-row strong{color:var(--deep)}
.public-app :is(.notice,.help,.small-caption,.foot-note,.checklist,.status-row){font-size:14px;line-height:1.8;color:var(--sub)}
.public-app .checklist li,.public-app .gallery figcaption{font-size:14px;color:var(--sub)}
.public-app .notice{background:var(--color-blue);color:var(--color-blue-ink)}
.public-app .foot-note{padding:20px 0;background:transparent;align-items:flex-start}
.public-app .resource-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.public-app .resource-card{padding:28px;border-radius:18px;box-shadow:none}
.public-app .resource-card h2{font-size:22px}
.public-app .resource-card p{font-size:16px;line-height:1.8}
.public-app .timeline-block{border-radius:18px;background:white}
.public-app .timeline-links a{min-height:48px;font-size:16px}
.public-app .timeline-links b{color:var(--deep)}
.public-app .prepare-grid{grid-template-columns:220px minmax(0,1fr);gap:28px}
.public-app .prepare-menu button{font-size:14px;min-height:48px;padding:12px;text-align:left}
.public-app .prepare-menu button.active{background:var(--color-blue);color:var(--deep)}
.public-app .form-grid{gap:20px}
.public-app .field{font-size:15px}
.public-app .field :is(input,textarea,select){font-size:16px;min-height:48px;border-color:#95A5BF;border-radius:8px;min-width:0;max-width:100%}
.public-app .check-field{min-height:48px;font-size:15px;align-items:center}
.public-app .check-field input{width:24px;height:24px;accent-color:var(--deep);flex-shrink:0}
.public-app .action-row{gap:12px;flex-wrap:wrap}
.public-app .btn{font-size:15px;min-height:48px;padding:12px 20px;line-height:1.5;border-radius:10px;max-width:100%;white-space:normal;text-align:center;border-color:#95A5BF}
.public-app .btn.primary{background:var(--deep);border-color:var(--deep)}
.public-app .btn:hover{transform:none;background:var(--color-blue);color:var(--deep)}
.public-app .btn.primary:hover{background:#1D3CA8;color:white}
.public-app .resource-link{font-size:16px;min-height:48px}
.public-app .empty{padding:40px 24px}
.public-app .empty h3{font-size:22px}
.public-app .empty p{font-size:16px}
.public-app .adjacent a{font-size:16px;padding:20px}
.public-app .adjacent small{font-size:14px}
.public-app .qr-card{padding:28px}
.public-app .qr-url{overflow-wrap:anywhere;font-size:13px}
.public-app .qr-box{width:206px;max-width:100%}
.public-app .qr-selected{outline-color:var(--deep)}
@media screen and (max-width:1023px){
 .public-app>.topbar,.public-app>main,.public-app>.footer{padding-inline:28px}
 .public-app>.bottomnav{padding-inline:28px}
 .portal-welcome{gap:32px}.lesson-note{padding:28px 24px}.portal-entry{padding:24px}
 .public-app .cards,.public-app .resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .public-app .detail-grid{grid-template-columns:minmax(0,1fr) 260px;gap:20px}
 .public-app .detail-hero{grid-template-columns:minmax(0,1fr) 120px;padding:32px}
 .public-app .detail-icon{width:120px;height:120px}.public-app .panel{padding:24px}
}
@media screen and (max-width:767px){
 .public-app>.topbar,.public-app>main,.public-app>.footer{padding-inline:20px}
 .public-app>.topbar{height:80px;gap:12px}.public-app .brand b{font-size:16px}.public-app .brand small{font-size:11px}
 .public-app .top-actions .draft-badge{display:none}.public-app .top-actions .text-link{font-size:13px}
 .public-app>.bottomnav{position:fixed;inset:auto 0 0;width:100%;padding:8px 12px max(8px,env(safe-area-inset-bottom));gap:8px;border:0;border-top:1px solid var(--line);background:var(--color-surface);z-index:20;justify-content:space-around}
 .public-app>.bottomnav a{flex:1;flex-direction:column;min-height:54px;gap:4px;padding:4px;font-size:12px;border:0;border-radius:8px}
 .public-app>.bottomnav a.active{background:var(--color-blue)}
 .public-app>.footer{padding-bottom:calc(112px + env(safe-area-inset-bottom))}.public-app #toast{bottom:calc(92px + env(safe-area-inset-bottom))}
 .public-app :is(.portal,.page,.portal-gallery-heading){padding-block:28px}
 .portal-welcome{grid-template-columns:1fr;gap:32px;padding:4px 0 28px}
 .portal-welcome h1{font-size:clamp(2.35rem,9.2vw,3.5rem);margin:20px 0}
 .portal-kicker{font-size:13px}.portal-intro{max-width:40ch;margin-bottom:20px}.portal-lesson{font-size:19px}
 .portal-meta{gap:8px 16px;margin-top:16px}.lesson-note{padding:24px;border-radius:8px 22px 22px 22px}.lesson-note h2{font-size:24px;margin:16px 0 20px}
 .portal-primary{grid-template-columns:1fr;gap:12px;margin-bottom:28px}.portal-entry{padding:24px;gap:16px}.portal-entry h2{font-size:24px;margin:8px 0}.portal-entry p{font-size:16px}
 .portal-directory{grid-template-columns:1fr;gap:0;margin-block:28px}.portal-directory .portal-row+.portal-row{border-top:0}.portal-row{padding:24px 0;gap:16px}
 .portal-staff{display:block;margin-top:24px}.portal-staff a{margin-top:8px}.portal-guide{grid-template-columns:1fr;gap:20px}
 .portal-flow li{grid-template-columns:28px minmax(0,1fr) auto;gap:12px;padding:20px 0}
 .public-app .section-head{display:block}.public-app .search{width:100%;margin-top:20px}.public-app .filters{align-items:flex-start;gap:12px}.public-app .chips{gap:8px}.public-app .chip{font-size:14px;padding:8px 12px}.public-app .result-count{display:block;width:100%}
 .public-app .cards{grid-template-columns:1fr;gap:20px}.public-app .card{display:grid;grid-template-columns:100px minmax(0,1fr)}
 .public-app .card-art{height:100%;min-height:220px}.public-app .card-art::before{width:76px;height:76px;left:calc(50% - 38px);top:calc(50% - 38px)}
 .public-app .card-art>.icon{width:44px;height:44px}.public-app .card-art .big-number{font-size:28px;left:12px;top:8px}
 .public-app .card-art .period-pill{left:8px;right:8px;top:auto;bottom:12px;max-width:none;font-size:12px;line-height:1.6;text-align:center;border-radius:8px;padding:4px}
 .public-app .card-body{padding:20px}.public-app .card h3{font-size:21px;margin:12px 0;white-space:normal}.public-app .card p{font-size:16px;margin-bottom:16px}.public-app .card-bottom{font-size:13px}
 .public-app .detail-hero{display:block;padding:28px;position:relative;overflow:hidden}.public-app .detail-hero>div:first-child{position:relative;z-index:1}
 .public-app .detail-hero h1{font-size:32px}.public-app .detail-icon{position:absolute;top:16px;right:-20px;width:112px;height:112px;opacity:.12}
 .public-app .detail-tabs{gap:8px}.public-app .detail-tabs .btn{margin-left:0}.public-app .detail-grid,.public-app .detail-side{display:block}
 .public-app :is(.gallery,.resource-grid,.timeline-block,.timeline-links,.prepare-grid,.form-grid,.two-columns,.qr-grid){grid-template-columns:1fr}
 .public-app .prepare-menu{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.public-app .prepare-menu button{padding:12px;overflow-wrap:anywhere}
 .public-app .media-editor .row{display:block}.public-app .action-row{display:flex;flex-wrap:wrap;gap:12px}.public-app .action-row .btn{flex:1 1 180px}
 .public-app .adjacent{flex-direction:column;gap:12px}.public-app .form-grid,.public-app .two-columns{gap:0}.public-app :is(.panel,.resource-card){padding:24px}.public-app .qr-card{padding:24px}.public-app .qr-box{width:206px}.public-app .question{font-size:24px}
}
@media screen and (max-width:374px){
 .public-app>.topbar,.public-app>main,.public-app>.footer{padding-inline:16px}
 .public-app .brand{gap:8px}.public-app .brand-mark{width:36px;height:36px;line-height:36px;font-size:22px;border-radius:10px}.public-app .brand b{font-size:15px}.public-app .top-actions .text-link{font-size:12px}
 .public-app .card{display:flex}.public-app .card-art{height:156px;min-height:156px}.public-app .card-art .period-pill{left:auto;right:12px;top:12px;bottom:auto;max-width:62%;padding:4px 8px}.public-app .card-body{padding:20px}.portal-entry{padding:20px}
}
@media(prefers-reduced-motion:reduce){.public-app *,.public-app *::before,.public-app *::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{
 body.public-app{background:white;padding:0;color:black}.public-app>main{max-width:none;padding:0}.public-app :is(.portal,.page){padding:0}
 .public-app :is(.portal-primary,.portal-directory,.portal-guide){display:block}.portal-event-qr{break-inside:avoid}.portal-event-qr .action-row{display:none}
 .public-app .qr-card{padding:9mm;border-radius:0}.public-app .qr-box{width:40mm}.public-app .qr-url{font-size:8px}
}