@layer reset, tokens, base, layout, components, sections, states, responsive, utilities;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body, h1, h2, h3, h4, p, ul, ol, dl { margin: 0; }
  ul, ol { padding: 0; list-style: none; }
  button, input, select { font: inherit; }
  button, a, select, input { -webkit-tap-highlight-color: transparent; }
  img, svg { display: block; max-inline-size: 100%; }
}

@layer tokens {
  :root {
    --canvas-bg: #020611; --elevated-bg: #081326; --surface-1: #10283b; --surface-2: #14344a; --surface-3: #193e56;
    --text-primary: #f6fbff; --text-secondary: #b8cbd8; --text-tertiary: #9eb3c7;
    --line-subtle: rgb(131 224 255 / 11%); --line-default: rgb(131 224 255 / 18%); --line-strong: rgb(131 224 255 / 32%);
    --accent-primary: #5ef7cd; --accent-secondary: #6aa9ff; --success: #58d7a0; --caution: #f2bc62; --error: #ef7180; --info: #64eaff; --focus: #ffcf70;
    --shadow-low: 0 6px 18px rgb(0 8 18 / 18%); --shadow-medium: 0 16px 38px rgb(0 7 17 / 28%); --shadow-high: 0 24px 60px rgb(0 5 14 / 42%); --glow-subtle: 0 0 28px rgb(94 247 205 / 12%);
    --radius-small: .65rem; --radius-medium: 1rem; --radius-large: 1.35rem; --radius-pill: 999px;
    --space-1: .45rem; --space-2: .75rem; --space-3: 1rem; --space-4: 1.5rem; --space-5: 2rem;
    --type-display: clamp(2.25rem, 5.2vw, 4.6rem); --type-section: clamp(1.75rem, 4vw, 3.1rem); --type-card: clamp(1.2rem, 1.9vw, 2.05rem); --type-body: 1rem; --type-small: .84rem;
    --control-height: 2.75rem; --content: 76rem; --gutter: clamp(1rem, 4vw, 3rem); --space: clamp(1rem, 2.5vw, 2rem); --duration: 180ms; --ease: cubic-bezier(.2,.7,.2,1);
    --ink: var(--text-primary); --muted: var(--text-tertiary); --paper: var(--canvas-bg); --card: var(--surface-1); --line: var(--line-default); --brand: var(--accent-primary); --brand-dark: var(--accent-primary); --mint: #123f4b; --blue: var(--accent-secondary); --violet: #ad8cff; --amber: var(--caution); --danger: var(--error); --radius: var(--radius-medium); --shadow: var(--shadow-medium);
  }
}

@layer base {
  body { color: var(--ink); background: radial-gradient(circle at 76% 0, rgb(90 157 255 / 10%), transparent 30rem), radial-gradient(circle at 12% 22rem, rgb(94 247 205 / 7%), transparent 27rem), var(--paper); font-family: Pretendard, "Noto Sans KR", system-ui, sans-serif; font-size: var(--type-body); line-height: 1.65; }
  a { color: inherit; text-decoration: none; }
  h1, h2, h3, h4 { line-height: 1.24; letter-spacing: -0.035em; }
  h1 { font-size: var(--type-display); }
  h2 { font-size: var(--type-section); }
  h3 { font-size: clamp(1.12rem, 2vw, 1.5rem); }
  p { overflow-wrap: anywhere; }
  button, input, select { border-radius: var(--radius-small); border: 1px solid var(--line); min-block-size: var(--control-height); }
  button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
  [hidden] { display: none; }
}

@layer layout {
  .site-header { position: sticky; inset-block-start: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem var(--gutter); background: rgb(2 6 17 / 92%); border-block-end: 1px solid var(--line-subtle); backdrop-filter: blur(14px); }
  .brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 850; letter-spacing: -.04em; }
  .brand-mark { inline-size: 2rem; block-size: 2rem; border-radius: .6rem; background: var(--mint); padding: .22rem; }
  .brand-mark img { inline-size: 100%; block-size: 100%; object-fit: contain; }
  .main-nav { display: flex; gap: .2rem; overflow-x: auto; padding-block: .2rem; }
  .main-nav a { flex: 0 0 auto; padding: .55rem .7rem; border-radius: .55rem; color: var(--muted); font-size: .9rem; font-weight: 720; }
  .main-nav a:hover, .main-nav a.is-active { color: var(--text-primary); background: var(--mint); box-shadow: inset 0 -2px 0 var(--accent-primary); }
  main { display: grid; gap: clamp(2.5rem, 7vw, 6rem); padding-block-end: 4rem; }
  .scene { inline-size: min(100% - (var(--gutter) * 2), var(--content)); margin-inline: auto; scroll-margin-block-start: 5rem; }
  .dashboard-scene { display: grid; gap: var(--space); padding-block-start: clamp(2rem, 6vw, 5rem); }
  .dashboard-grid, .curriculum-layout, .sorting-layout { display: grid; gap: var(--space); }
  .hero-copy, .scene-copy, .project-intro { display: grid; gap: 1rem; max-inline-size: 51rem; }
  .hero-copy { max-inline-size: 64rem; }
  .project-cards, .subject-grid, .hah-grid, .flow-grid, .gallery-grid, .resource-grid, .kpi-row, .class-kpis, .landfill-metrics, .app-tabs, .sorting-mode-switch, .quick-buttons, .quick-action-row, .decision-grid { display: grid; gap: .8rem; }
  .school-visuals, .chart-wrap, .gallery-stage, .sorting-app, .tab-panel, .modal-body { display: grid; gap: 1rem; }
}

@layer components {
  .panel, .project-cards article, .flow-card, .standards-panel, .sorting-app, .quiz-card, .hold-card, .ai-modal { background: linear-gradient(145deg, rgb(25 62 86 / 88%), var(--card)); border: 1px solid var(--line-subtle); border-radius: var(--radius); box-shadow: var(--shadow-low); }
  .panel, .project-cards article, .flow-card, .standards-panel, .sorting-app, .quiz-card, .hold-card { display: grid; align-content: start; gap: clamp(.75rem, 1.8vw, 1.2rem); padding: clamp(1rem, 3vw, 1.65rem); }
  .panel-head, .chart-title-row, .hold-list-head, .quiz-status, .landfill-actions, .gallery-detail-head { display: flex; align-items: center; justify-content: space-between; gap: .75rem; flex-wrap: wrap; }
  .panel h2 { font-size: var(--type-card); }
  .panel-head p, .eyebrow, .project-origin, .sorting-mode-status { color: var(--brand-dark); font-size: .82rem; font-weight: 800; letter-spacing: .035em; }
  .panel-head span, .panel small, .rank-note, .sorting-app small, .gallery-detail p, .save-state { color: var(--muted); }
  .primary-btn, .secondary-btn, .quick-action-row button, .decision-grid button, .tm-model-line button, .hold-input-line button, #searchButton, #tmApplyButton { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: .7rem 1rem; font-weight: 800; }
  .primary-btn, .quick-action-row button:first-child, #confirmDecision { color: var(--canvas-bg); background: var(--brand); border-color: var(--brand); box-shadow: var(--glow-subtle); }
  .secondary-btn, .quick-action-row button, .decision-grid button, .tm-model-line button, .hold-input-line button { background: var(--surface-2); color: var(--ink); border-color: var(--line-default); }
  .primary-btn:hover, .quick-action-row button:first-child:hover, #confirmDecision:hover { background: var(--success); transform: translateY(-2px); }
  .hero-actions, .upload-actions, .sorting-upload, .search-line, .hold-input-line { display: flex; gap: .75rem; flex-wrap: wrap; }
  .hero-actions > *, .upload-actions > *, .search-line input, .hold-input-line input { flex: 1 1 12rem; }
  .search-line { display: grid; grid-template-columns: minmax(0, 1fr) 2.75rem; align-items: end; }
  .search-line > span { grid-column: 1 / -1; }
  .search-line input { grid-column: 1; grid-row: 2; min-inline-size: 0; }
  #searchButton { grid-column: 2; grid-row: 2; align-self: stretch; inline-size: 2.75rem; }
  .select-line { display: grid; gap: .4rem; color: var(--muted); font-size: .88rem; font-weight: 750; }
  .select-line select, .search-line input, .tm-model-line input, .hold-input-line input { inline-size: 100%; padding: .7rem .8rem; color: var(--ink); background: var(--elevated-bg); border-color: var(--line-default); }
  .kpi-row > div, .class-kpis > div, .landfill-metrics > div { display: grid; align-content: start; gap: .2rem; padding: .8rem; border-radius: var(--radius-small); background: var(--surface-2); }
  .kpi-row strong, .class-kpis strong, .landfill-metrics strong { display: block; font-size: 1.45rem; }
  .kpi-row span, .class-kpis span, .landfill-metrics span { color: var(--muted); font-size: .78rem; }
  .bar-list, .confusion, .progress-stack { display: grid; gap: .7rem; }
  .bar-list > div, .confusion > div, .progress-stack label { display: grid; grid-template-columns: 4.4rem 1fr auto; align-items: center; gap: .6rem; font-size: .82rem; }
  .bar-list i, .confusion i, .progress-stack i { display: block; border-radius: var(--radius-pill); background: var(--elevated-bg); }
  .bar-list i::after, .confusion i::after, .progress-stack em { content: ""; display: block; inline-size: var(--value, 0%); min-block-size: .5rem; border-radius: inherit; background: var(--brand); }
  /* These <i>/<em> fill bars are freshly re-created (innerHTML template)
     every render with their final width already baked in, so a CSS
     transition never fires on them -- an animation does, since it plays
     on insertion regardless of whether the value ever visibly "changed". */
  /* ...but only while an intro or a refresh is actually running. Live data
     arriving on its own also rebuilds these elements, and animating those
     silent updates made the bars visibly refill a second time after the
     opening effect had already finished. */
  @keyframes inlineBarFill { from { opacity: .55; transform: scaleX(0); } to { opacity: 1; transform: scaleX(1); } }
  .bar-list i::after, .confusion i::after, .progress-stack em { transform-origin: left center; }
  .is-dashboard-repaint .bar-list i::after,
  .is-dashboard-repaint .confusion i::after,
  .is-dashboard-repaint .progress-stack em { animation: inlineBarFill 720ms cubic-bezier(.22,1,.36,1) both; }
  /* Chart marker dots are also rebuilt from scratch on every combo-chart
     render (renderLandfillChart does svg.innerHTML = ""), so they pop in
     with a keyframe animation the same way instead of a transition. */
  @keyframes chartMarkerPop { from { opacity: 0; transform: scale(.55); } to { opacity: 1; transform: scale(1); } }
  .combo-chart .chart-points circle { transform-box: fill-box; transform-origin: center; }
  .is-dashboard-repaint .combo-chart .chart-points circle { animation: chartMarkerPop 820ms cubic-bezier(.22,1,.36,1) both; animation-delay: 640ms; }
  .progress-stack em { inline-size: 0; }
  .donut-pair { display: flex; gap: 1rem; flex-wrap: wrap; }
  .donut { display: grid; place-items: center; align-content: center; aspect-ratio: 1; inline-size: 8rem; border-radius: 50%; background: conic-gradient(var(--brand) calc(var(--pct) * 1%), var(--elevated-bg) 0); }
  .donut > * { background: var(--surface-1); border-radius: 50%; text-align: center; }
  .donut span { padding: 1.8rem 1.1rem .1rem; font-weight: 850; }
  .donut small { padding: .1rem .55rem 1.5rem; color: var(--muted); font-size: .65rem; }
  .violet { background: conic-gradient(var(--violet) calc(var(--pct) * 1%), var(--elevated-bg) 0); }
  .combo-chart { inline-size: 100%; background: var(--elevated-bg); border: 1px solid var(--line-subtle); border-radius: var(--radius-small); }
  .upload-actions button { display: grid; place-items: center; gap: .5rem; padding: 1rem; background: var(--surface-2); color: var(--text-primary); border-color: var(--line-default); font-weight: 800; text-align: center; }
  .upload-icon, .sorting-upload-icon { inline-size: 2rem; block-size: 2rem; }
  .data-refresh-btn { display: grid; place-items: center; flex: 0 0 auto; inline-size: 2.75rem; block-size: 2.75rem; padding: .55rem; }
  .data-refresh-btn svg { inline-size: 1.25rem; block-size: 1.25rem; }
  .upload-icon svg, .sorting-upload-icon svg, .data-refresh-btn svg, #searchButton svg { inline-size: 100%; block-size: 100%; fill: none; stroke: currentColor; stroke-width: 1.8; }
  .project-cards span, .flow-card > span, .gallery-grid article > span { color: var(--brand); font-weight: 900; }
  .project-cards p, .subject-card p, .flow-card p { color: var(--muted); }
  .subject-card { display: grid; gap: .75rem; }
  .subject-card em { color: var(--brand); font-style: normal; font-weight: 800; }
  .standards-grid { display: grid; gap: .75rem; margin-block-start: 1rem; }
  .standards-grid article { padding: .75rem; border-inline-start: 4px solid var(--brand); background: var(--surface-2); }
  .gallery-grid article, .gallery-detail { border: 1px solid var(--line); border-radius: .85rem; padding: 1rem; }
  .gallery-grid article { display: grid; gap: .75rem; }
  .gallery-grid button, #galleryBack { justify-self: start; padding: .55rem .75rem; border: 0; background: var(--mint); color: var(--text-primary); font-weight: 800; }
  .gallery-detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: .75rem; }
  .gallery-detail-grid img { inline-size: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: .65rem; }
  .app-tabs button, .sorting-mode-switch button { background: var(--elevated-bg); color: var(--muted); border-color: var(--line-subtle); font-weight: 800; }
  .app-tabs button.is-active, .sorting-mode-switch button.is-active { color: var(--canvas-bg); background: var(--brand); border-color: var(--brand); }
  .tab-panel { display: none; }
  .tab-panel.is-active { display: grid; }
  [data-sorting-mode-panel] { display: none; }
  .sorting-app[data-sorting-mode="photo"] [data-sorting-mode-panel="photo"], .sorting-app[data-sorting-mode="search"] [data-sorting-mode-panel="search"], .sorting-app[data-sorting-mode="quick"] [data-sorting-mode-panel="quick"] { display: flex; }
  .sorting-app[data-sorting-mode="search"] .search-line { display: grid; }
  .quick-buttons button { padding: .75rem; color: var(--ink); background: var(--surface-2); border-color: var(--line-subtle); text-align: start; }
  .quick-buttons button.is-active { color: var(--text-primary); background: var(--mint); border-color: var(--brand); }
  .tm-model-line { border: 1px solid var(--line); border-radius: .75rem; padding: .75rem; }
  .tm-model-line summary { cursor: pointer; font-weight: 800; }
  .tm-model-line > div { display: flex; gap: .5rem; flex-wrap: wrap; margin-block-start: .7rem; }
  .tm-model-line input { flex: 1 1 15rem; }
  .classroom-skill-panel { display:grid; gap:.75rem; }
  .classroom-skill-intro { margin:0; color:var(--muted); }
  .class-profile-panel { display:grid; gap:.65rem; padding:.7rem; border:1px solid var(--line-subtle); border-radius:.65rem; background:var(--surface-2); }
  .class-profile-status { margin:0; color:var(--brand-dark); font-size:.82rem; font-weight:800; }
  .class-profile-form { display:grid; gap:.65rem; grid-template-columns:repeat(2,minmax(0,1fr)); }
  .class-profile-form label { display:grid; gap:.35rem; font-size:.86rem; font-weight:800; }
  .class-profile-form label:nth-child(1), .class-profile-form label:nth-child(2) { grid-column:1 / -1; }
  .class-profile-form input, .class-profile-form select { inline-size:100%; padding:.7rem .8rem; color:var(--ink); background:var(--elevated-bg); border-color:var(--line-default); }
  .class-profile-form button { justify-self:start; }
  .class-profile-actions { display:flex; gap:.5rem; flex-wrap:wrap; }
  .classroom-skill-form { display:grid; gap:.65rem; grid-template-columns:repeat(2,minmax(0,1fr)); }
  .classroom-skill-form label { display:grid; gap:.35rem; font-size:.86rem; font-weight:800; }
  .classroom-skill-form label:nth-child(2), .classroom-skill-form label:nth-child(3) { grid-column:1 / -1; }
  .classroom-skill-form textarea { min-block-size:4.5rem; resize:vertical; }
  .classroom-skill-form button { justify-self:start; }
  .classroom-skill-list { display:grid; gap:.5rem; margin:0; padding:0; list-style:none; }
  .classroom-skill-list li { display:flex; align-items:center; justify-content:space-between; gap:.7rem; padding:.7rem; border:1px solid var(--line-subtle); border-radius:.65rem; }
  .classroom-skill-list small { color:var(--muted); }
  .classroom-skill-count { margin:0; color:var(--brand-dark); font-size:.82rem; font-weight:800; }
  .quick-result { display: grid; gap: 1rem; padding: 1rem; border: 1px solid var(--line-default); border-radius: var(--radius-small); background: var(--elevated-bg); }
  .quick-result.is-scanning { color: var(--muted); }
  .judgement-result-head, .judgement-details, .judgement-checklist, .judgement-recommendation, .judgement-corrections, .judgement-gemini-live { display: grid; gap: .65rem; padding: 1rem; border-radius: var(--radius-small); background: var(--surface-2); }
  .judgement-candidate-block, .judgement-gemini-live { border: 1px solid color-mix(in srgb, var(--info) 48%, var(--line-subtle)); background: color-mix(in srgb, var(--info) 10%, var(--surface-2)); }
  .judgement-skill-evidence { display:grid; gap:.5rem; padding:1rem; border:1px solid color-mix(in srgb,var(--brand) 48%,var(--line-subtle)); border-radius:var(--radius-small); background:color-mix(in srgb,var(--brand) 9%,var(--surface-2)); }
  .judgement-skill-evidence.is-caution { border-color:var(--warning); background:color-mix(in srgb,var(--warning) 10%,var(--surface-2)); }
  .judgement-skill-evidence ul { display:grid; gap:.35rem; margin:0; padding:0; list-style:none; }
  .judgement-skill-evidence li { display:grid; gap:.15rem; padding:.55rem .65rem; border:1px solid var(--line-subtle); border-radius:.5rem; background:var(--surface-3); }
  .judgement-skill-evidence li small,.skill-evidence-signal { color:var(--muted); }
  .skill-evidence-signal { margin:0; font-weight:700; }
  .judgement-checklist, .judgement-corrections { border: 1px solid var(--line-default); }
  .judgement-chip-row, .judgement-corrections > div { display: flex; gap: .5rem; flex-wrap: wrap; }
  .judgement-chip { display: grid; gap: .15rem; padding: .45rem .6rem; border-radius: .5rem; background: var(--surface-3); border: 1px solid var(--line-subtle); }
  .judgement-chip em { color: var(--muted); font-size: .72rem; font-style: normal; }
  .judgement-details summary { cursor: pointer; font-weight: 800; }
  .judgement-cautions li { margin-inline-start: 1rem; list-style: disc; }
  .judgement-checklist > div { display: grid; gap: .5rem; }
  .judgement-check { display: flex; align-items: center; gap: .6rem; padding: .7rem; background: var(--surface-1); border-color: var(--line-default); text-align: start; }
  .judgement-check.is-done { color: var(--brand-dark); border-color: var(--brand); }
  .judgement-check span { display: grid; place-items: center; inline-size: 1.25rem; block-size: 1.25rem; border: 1px solid currentColor; border-radius: 50%; }
  .judgement-recommendation.is-ready { color: var(--text-primary); background: color-mix(in srgb, var(--success) 18%, var(--surface-2)); border: 1px solid var(--success); }
  .judgement-recommendation.is-hold, .decision-confirm { color: var(--text-primary); background: color-mix(in srgb, var(--caution) 16%, var(--surface-2)); border: 1px solid var(--caution); }
  .quiz-card, .hold-card { display: grid; gap: 1rem; }
  .quiz-choice-row { display: flex; gap: .75rem; }
  .quiz-choice-row button { flex: 1; font-size: 1.2rem; font-weight: 900; color: var(--ink); background: var(--surface-2); }
  .quiz-status i, .quiz-card > i { display: block; flex: 1; border-radius: var(--radius-pill); background: var(--elevated-bg); }
  #quizBar { display: block; min-block-size: .55rem; background: var(--brand); border-radius: inherit; }
  .empty-state { color: var(--muted); }
  .ai-modal { inline-size: min(100% - 2rem, 43rem); padding: 0; color: var(--ink); border-color: var(--line-strong); box-shadow: var(--shadow-high); }
  .ai-modal::backdrop { background: rgb(2 10 18 / 76%); }
  .modal-body { padding: 1rem; overflow: auto; }
  .modal-preview { background: var(--elevated-bg); border: 1px solid var(--line-subtle); border-radius: var(--radius-small); }
  .modal-preview img { inline-size: 100%; aspect-ratio: 16 / 9; object-fit: contain; }
  .close-btn { inline-size: var(--control-height); padding: 0; border-radius: 50%; color: var(--ink); background: var(--surface-2); font-size: 1.4rem; }
  .decision-grid { grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr)); }
  .decision-confirm { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; padding: .75rem; border-radius: var(--radius-small); }
  .modal-cancel-action { background: transparent; color: var(--muted); border: 0; text-decoration: underline; }
}

@layer sections {
  .project-scene, .curriculum-scene, .hah-scene, .flow-scene, .gallery-scene, .sorting-scene, .resources-scene { display: grid; gap: var(--space); }
  .project-scene, .hah-scene, .sorting-scene { padding-block: clamp(1rem, 4vw, 3rem); }
  .project-statement { padding: clamp(1rem, 4vw, 2rem); border-inline-start: .45rem solid var(--brand); background: color-mix(in srgb, var(--brand) 10%, var(--surface-1)); }
  .hah-grid article, .flow-grid article { display: grid; gap: .7rem; }
  .flow-grid article > span { display: grid; place-items: center; inline-size: 2.2rem; block-size: 2.2rem; border-radius: 50%; color: #fff; background: var(--blue); font-weight: 900; }
  .resource-grid a { display: grid; gap: .6rem; min-block-size: 100%; }
}

@layer states {
  body.modal-open { overscroll-behavior: contain; }
  .is-loading, .quick-result.is-scanning { position: relative; opacity: .78; }
  /* .data-refresh-btn은 이미 자기만의 링(.data-refresh-ring, styles/cb3a.css)이
     있는데 이 범용 스피너도 같은 .is-loading 클래스를 보고 따로 하나 더
     그려서, 새로고침 버튼에서 원이 2개가 겹쳐 도는 것처럼 보였다 - 그
     충돌만 제외한다. */
  .is-loading:not(.data-refresh-btn)::after, .quick-result.is-scanning::after { content: ""; inline-size: 1.25rem; block-size: 1.25rem; border: 2px solid var(--line-strong); border-block-start-color: var(--accent-primary); border-radius: 50%; animation: spin var(--duration) linear infinite; }
  button:disabled { cursor: not-allowed; opacity: .48; }
  .scan-overlay { display: none; }
  .quick-result.is-live-gemini .judgement-gemini-live { border: 1px solid var(--info); background: color-mix(in srgb, var(--info) 14%, var(--surface-2)); }
  .panel:hover, .project-cards article:hover, .gallery-grid article:hover, .resource-grid a:hover { border-color: var(--line-strong); box-shadow: var(--shadow-medium), var(--glow-subtle); transform: translateY(-2px); }
  .panel:focus-within, .sorting-app:focus-within { border-color: var(--focus); }
  .save-state.is-error, .error-state { color: var(--error); border-color: var(--error); }
  @keyframes spin { to { transform: rotate(1turn); } }
  @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 1ms; animation-iteration-count: 1; scroll-behavior: auto; transition-duration: 1ms; } }
  @media (max-width: 34rem) { .class-profile-form { grid-template-columns:1fr; } .class-profile-form label:nth-child(1), .class-profile-form label:nth-child(2) { grid-column:auto; } }
}

@layer responsive {
  @media (min-width: 42rem) {
    .dashboard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .landfill-panel { grid-column: span 2; }
    .project-cards, .subject-grid, .hah-grid, .flow-grid, .gallery-grid, .resource-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .kpi-row, .class-kpis, .landfill-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .school-visuals { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
    .app-tabs, .sorting-mode-switch { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .sorting-mode-switch { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .quick-buttons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }
  @media (min-width: 64rem) {
    .site-header { padding-block: 1rem; }
    .dashboard-scene { grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); align-items: start; }
    .dashboard-scene .hero-copy { padding-block-start: clamp(3rem, 8vw, 7rem); }
    .dashboard-grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
    .school-panel { grid-column: span 5; }
    .landfill-panel { grid-column: span 7; }
    .class-panel, .upload-panel { grid-column: span 6; }
    /* skill-panel은 dashboard-grid 안이 아니라 dashboard-scene의 형제로
       옮겨졌다(4개 패널 전용으로 실측 튜닝된 2x2 quadrant를 절대 깨지
       않기 위해) - 이 폭에서 dashboard-scene 자체가 2단 그리드가 되므로,
       hero-copy와 dashboard-grid 두 칸을 모두 가로질러 아래에 온전한
       한 줄로 앉힌다. */
    .skill-panel { grid-column: 1 / -1; }
    .project-scene, .curriculum-scene, .flow-scene, .gallery-scene, .sorting-scene { grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); align-items: start; }
    .project-cards, .hah-grid, .flow-grid, .gallery-grid, .resource-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .project-scene > .project-cards, .curriculum-scene > .curriculum-layout, .flow-scene > .flow-grid, .gallery-scene > .gallery-stage, .sorting-scene > .sorting-layout { align-self: center; }
    .curriculum-layout, .sorting-layout { grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); align-items: start; }
    .subject-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .gallery-stage { grid-template-columns: minmax(0, 1fr) minmax(0, .7fr); }
    .gallery-detail { position: sticky; inset-block-start: 6rem; }
    .quick-buttons { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .landfill-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hah-scene { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: start; }
    .hah-scene .center-copy, .hah-scene .scene-copy, .hah-scene .callout, .hah-scene .hah-grid { grid-column: 1 / -1; }
  }
  @media (max-width: 41.99rem) {
    .site-header { align-items: flex-start; }
    .brand > span:last-child { display: none; }
    .main-nav { max-inline-size: calc(100vw - 4rem); }
    .hero-actions > *, .upload-actions > *, .quick-action-row > * { flex-basis: 100%; }
  }
}

@layer utilities {
}