/* Scoped from /Users/gavinadam/Downloads/arrangement-atlas.html and adapted to FEERSUM fonts/theme. */

.arrangement-atlas-page{
  --bg:#001529; --bg2:#000c17; --panel:#071a2b; --panel2:#0c2238;
  --line:#1d4a71; --line-soft:#15325b; --grid:#112545;
  --ink:#dce8f4; --ink-dim:#8aa3bb; --ink-faint:#7e97ae;
  --accent:#49ff00; --hot:#ff4d4f;
  --r-intro:#4a6378; --r-groove:#2e8c7a; --r-hook:#d9a441; --r-break:#8c7ae6;
  --r-build:#d65d8e; --r-drop:#ff5c49; --r-switch:#45c2ff; --r-outro:#5e718a; --r-evo:#3fa0a8;
  --mono:'Plus Jakarta Sans',ui-sans-serif,system-ui,sans-serif;
  --disp:'Montserrat','Plus Jakarta Sans',ui-sans-serif,system-ui,sans-serif;
}
.arrangement-atlas-page *{box-sizing:border-box;margin:0;padding:0}
.arrangement-atlas-page{scroll-behavior:smooth}
.arrangement-atlas-page{
  background:var(--bg); color:var(--ink); font-family:var(--disp);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size:48px 48px;
  min-height:100vh;
}
@media (prefers-reduced-motion: reduce){.arrangement-atlas-page *{animation:none!important;transition:none!important}}
.arrangement-atlas-page .wrap{max-width:1280px;margin:0 auto;padding:0 20px 80px}
.arrangement-atlas-page .atlas-header{padding:36px 0 18px;border-bottom:1px solid var(--line)}
.arrangement-atlas-page .eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.arrangement-atlas-page h1{font-size:clamp(26px,4.5vw,44px);font-weight:800;font-stretch:75%;letter-spacing:-.01em;line-height:1.02;text-transform:uppercase}
.arrangement-atlas-page h1 .thin{color:var(--ink-dim);font-weight:500}
.arrangement-atlas-page .atlas-header h2{font-size:clamp(22px,3.5vw,34px);font-weight:800;line-height:1.1;text-transform:uppercase}
.arrangement-atlas-page .atlas-introduction .wrap{padding:36px 20px 24px}
.arrangement-atlas-page .atlas-introduction a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.arrangement-atlas-page .thesis{margin-top:10px;color:var(--ink-dim);max-width:760px;font-size:14.5px;line-height:1.55}
.arrangement-atlas-page .thesis b{color:var(--ink)}
.arrangement-atlas-page .method-note{margin-top:12px;font-family:var(--mono);font-size:12px;color:var(--ink-faint);max-width:760px;line-height:1.6;border-left:2px solid var(--line);padding-left:10px}
.arrangement-atlas-page .method-note summary{cursor:pointer;color:var(--ink-dim);font-size:11px;letter-spacing:.14em;text-transform:uppercase;font-weight:600;user-select:none}
.arrangement-atlas-page .method-note summary:hover{color:var(--ink)}
.arrangement-atlas-page .method-note[open] summary{margin-bottom:6px}
/* selector */
.arrangement-atlas-page .selectorbar{position:sticky;top:0;z-index:50;background:linear-gradient(var(--bg) 88%,transparent);padding:12px 0 4px;border-bottom:1px solid var(--line-soft)}
.arrangement-atlas-page .sel-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.arrangement-atlas-page .sel-title{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-dim)}
.arrangement-atlas-page .sel-actions{display:flex;gap:8px;flex-wrap:wrap}
.arrangement-atlas-page .sel-actions button{background:none;border:1px solid var(--line);color:var(--ink-dim);font-family:var(--mono);font-size:10.5px;padding:3px 9px;border-radius:3px;cursor:pointer}
.arrangement-atlas-page .sel-actions button:hover{color:var(--ink);border-color:var(--ink-faint)}
.arrangement-atlas-page .fam-row{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin-bottom:5px}
.arrangement-atlas-page .fam-label{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);min-width:84px}
.arrangement-atlas-page .chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--line);color:var(--ink-dim);font-size:12px;font-weight:500;padding:4px 10px;border-radius:3px;cursor:pointer;user-select:none;transition:border-color .12s, color .12s}
.arrangement-atlas-page .chip .dot{width:8px;height:8px;border-radius:2px;background:var(--c,#888);flex:none;opacity:.45}
.arrangement-atlas-page .chip:hover{color:var(--ink)}
.arrangement-atlas-page .chip.on{color:var(--ink);border-color:var(--c,#888)}
.arrangement-atlas-page .chip.on .dot{opacity:1;box-shadow:0 0 8px var(--c)}
.arrangement-atlas-page .chip:focus-visible,.arrangement-atlas-page button:focus-visible,.arrangement-atlas-page select:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
/* tabs */
.arrangement-atlas-page nav.tabs{display:flex;gap:0;margin:20px 0 0;border:1px solid var(--line);border-radius:4px;overflow-x:auto;background:var(--panel)}
.arrangement-atlas-page nav.tabs button{flex:1 0 auto;background:none;border:none;border-right:1px solid var(--line);color:var(--ink-dim);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;padding:11px 14px;cursor:pointer;white-space:nowrap}
.arrangement-atlas-page nav.tabs button:last-child{border-right:none}
.arrangement-atlas-page nav.tabs button.on{background:var(--panel2);color:var(--accent);box-shadow:inset 0 -2px 0 var(--accent)}
.arrangement-atlas-page nav.tabs button:hover{color:var(--ink)}
.arrangement-atlas-page section.view{display:none;padding-top:22px}
.arrangement-atlas-page section.view.on{display:block}
.arrangement-atlas-page .view-head{margin-bottom:14px}
.arrangement-atlas-page .view-head h2{font-size:19px;font-weight:700;font-stretch:75%;text-transform:uppercase;letter-spacing:.02em}
.arrangement-atlas-page .view-head p{color:var(--ink-dim);font-size:13px;margin-top:4px;max-width:740px;line-height:1.5}
.arrangement-atlas-page .panel{background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:16px}
.arrangement-atlas-page .empty{font-family:var(--mono);font-size:12px;color:var(--ink-faint);padding:30px;text-align:center;border:1px dashed var(--line);border-radius:5px}
/* timeline */
.arrangement-atlas-page .ruler{position:relative;height:22px;margin:0 0 6px 168px;font-family:var(--mono);font-size:9.5px;color:var(--ink-faint)}
.arrangement-atlas-page .ruler span{position:absolute;transform:translateX(-50%);border-left:1px solid var(--line);padding-left:3px;height:100%}
.arrangement-atlas-page .tl-row{display:flex;align-items:stretch;margin-bottom:7px}
.arrangement-atlas-page .tl-label{flex:0 0 168px;padding-right:10px;display:flex;flex-direction:column;justify-content:center}
.arrangement-atlas-page .tl-label .nm{font-size:12.5px;font-weight:700;display:flex;align-items:center;gap:6px}
.arrangement-atlas-page .tl-label .nm i{width:8px;height:8px;border-radius:2px;background:var(--c);flex:none}
.arrangement-atlas-page .tl-label .meta{font-family:var(--mono);font-size:9.5px;color:var(--ink-faint)}
.arrangement-atlas-page .tl-track{flex:1;display:flex;height:46px;border:1px solid var(--line);border-radius:3px;overflow:hidden;background:var(--bg2)}
.arrangement-atlas-page .tl-sec{position:relative;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:10px;letter-spacing:.02em;color:#0b1420;font-weight:600;overflow:hidden;white-space:nowrap;border-right:1px solid rgba(11,20,32,.55);cursor:pointer}
.arrangement-atlas-page .tl-sec:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;z-index:3}
.arrangement-atlas-page .tl-sec.lt,.arrangement-atlas-page .tl-sec.lt span{color:#fff}
.arrangement-atlas-page .tl-sec.lt span{text-shadow:0 1px 0 rgba(0,0,0,.4)}
.arrangement-atlas-page .tl-sec .eb{position:absolute;left:0;right:0;bottom:0;background:rgba(11,20,32,.42)}
.arrangement-atlas-page .tl-sec span{position:relative;z-index:2;padding:0 2px;text-shadow:0 1px 0 rgba(255,255,255,.15)}
.arrangement-atlas-page .legend{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px;font-family:var(--mono);font-size:10px;color:var(--ink-dim)}
.arrangement-atlas-page .legend i{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:5px;vertical-align:-1px}
/* charts */
.arrangement-atlas-page svg text{font-family:var(--mono)}
.arrangement-atlas-page .chart-controls{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.arrangement-atlas-page .chart-controls button{background:var(--panel2);border:1px solid var(--line);color:var(--ink-dim);font-family:var(--mono);font-size:11px;padding:5px 12px;border-radius:3px;cursor:pointer}
.arrangement-atlas-page .chart-controls button.on{color:var(--accent);border-color:var(--accent)}
/* matrix */
.arrangement-atlas-page table.matrix{width:100%;border-collapse:collapse;font-size:12px}
.arrangement-atlas-page table.matrix th{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-dim);text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--panel)}
.arrangement-atlas-page table.matrix td{padding:7px 10px;border-bottom:1px solid var(--line-soft);font-family:var(--mono);font-size:11.5px;white-space:nowrap}
.arrangement-atlas-page table.matrix td.gname{font-family:var(--disp);font-weight:700;font-size:12.5px}
.arrangement-atlas-page table.matrix td.gname i{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:7px;background:var(--c)}
.arrangement-atlas-page .heat{display:inline-block;min-width:34px;text-align:center;padding:2px 6px;border-radius:3px;color:#0b1420;font-weight:600}
.arrangement-atlas-page .matrix-scroll{overflow-x:auto;max-height:70vh;overflow-y:auto}
/* dna */
.arrangement-atlas-page .dna-grid{display:grid;grid-template-columns:minmax(300px,420px) 1fr;gap:18px}
@media(max-width:900px){.arrangement-atlas-page .dna-grid{grid-template-columns:1fr}}
.arrangement-atlas-page .dna-cards{display:flex;flex-direction:column;gap:10px;max-height:560px;overflow-y:auto;padding-right:4px}
.arrangement-atlas-page .dna-card{background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--c,#888);border-radius:4px;padding:11px 13px}
.arrangement-atlas-page .dna-card h3{font-size:14px;display:flex;justify-content:space-between;align-items:baseline}
.arrangement-atlas-page .dna-card h3 small{font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);font-weight:400}
.arrangement-atlas-page .tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:7px}
.arrangement-atlas-page .tag{font-family:var(--mono);font-size:9.5px;background:var(--bg2);border:1px solid var(--line);color:var(--ink-dim);padding:2px 7px;border-radius:2px}
/* engine */
.arrangement-atlas-page .engine-setup{display:grid;grid-template-columns:240px 1fr;gap:16px;margin-bottom:18px}
@media(max-width:760px){.arrangement-atlas-page .engine-setup{grid-template-columns:1fr}}
.arrangement-atlas-page .engine-setup label{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-dim);display:block;margin-bottom:6px}
.arrangement-atlas-page .engine-setup select{width:100%;background:var(--panel2);border:1px solid var(--line);color:var(--ink);font-family:var(--mono);font-size:12px;padding:8px;border-radius:3px}
.arrangement-atlas-page .eng-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:12px}
.arrangement-atlas-page .eng-card{background:var(--panel2);border:1px solid var(--line);border-top:3px solid var(--c,#888);border-radius:4px;padding:14px}
.arrangement-atlas-page .eng-card h3{font-size:15px;margin-bottom:2px}
.arrangement-atlas-page .eng-card .sub{font-family:var(--mono);font-size:10px;color:var(--ink-faint);margin-bottom:10px}
.arrangement-atlas-page .tech{border-top:1px solid var(--line-soft);padding:9px 0}
.arrangement-atlas-page .tech h4{font-size:12.5px;color:var(--accent);font-weight:700}
.arrangement-atlas-page .tech p{font-size:12px;color:var(--ink-dim);line-height:1.5;margin-top:3px}
.arrangement-atlas-page .tech .repl{font-family:var(--mono);font-size:10px;color:var(--ink);margin-top:5px}
.arrangement-atlas-page .tech .repl b{color:var(--hot);font-weight:600}
.arrangement-atlas-page .fx{display:flex;gap:12px;margin-top:6px;font-family:var(--mono);font-size:9.5px;color:var(--ink-faint)}
.arrangement-atlas-page .fx b{color:var(--accent);letter-spacing:1px;font-weight:500}
.arrangement-atlas-page .synth{background:var(--bg2);border:1px solid var(--line);border-radius:4px;padding:12px 14px;margin-top:14px;font-size:13px;line-height:1.6;color:var(--ink-dim)}
.arrangement-atlas-page .synth b{color:var(--ink)}
/* lab */
.arrangement-atlas-page .lab-filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.arrangement-atlas-page .lab-filters button{background:var(--panel2);border:1px solid var(--line);color:var(--ink-dim);font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;border-radius:3px;cursor:pointer}
.arrangement-atlas-page .lab-filters button.on{color:var(--accent);border-color:var(--accent)}
.arrangement-atlas-page .lab-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:12px}
.arrangement-atlas-page .lab-card{background:var(--panel2);border:1px solid var(--line);border-radius:4px;padding:14px;cursor:pointer}
.arrangement-atlas-page .lab-card:hover{border-color:var(--ink-faint)}
.arrangement-atlas-page .lab-card h3{font-size:14px}
.arrangement-atlas-page .lab-card .lin{font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);margin:3px 0 9px}
.arrangement-atlas-page .flow{display:flex;flex-wrap:wrap;gap:4px;align-items:center}
.arrangement-atlas-page .flow span{font-family:var(--mono);font-size:9.5px;background:var(--bg2);border:1px solid var(--line);padding:2px 6px;border-radius:2px;color:var(--ink-dim)}
.arrangement-atlas-page .flow em{color:var(--ink-faint);font-style:normal;font-size:9px}
.arrangement-atlas-page .lab-card .note{display:none;font-size:12px;color:var(--ink-dim);line-height:1.55;margin-top:10px;border-top:1px solid var(--line-soft);padding-top:9px}
.arrangement-atlas-page .lab-card .delta{display:none;font-family:var(--mono);font-size:10px;color:var(--accent);margin-top:7px;line-height:1.5}
.arrangement-atlas-page .lab-card.open .note,.arrangement-atlas-page .lab-card.open .delta{display:block}
.arrangement-atlas-page .lab-card .cls{float:right;font-family:var(--mono);font-size:8.5px;letter-spacing:.12em;text-transform:uppercase;padding:2px 6px;border-radius:2px;border:1px solid var(--line)}
.arrangement-atlas-page .cls.traditional{color:#8aa3bb}
.arrangement-atlas-page .cls.modern{color:#45c2ff;border-color:#2a5f7d}
.arrangement-atlas-page .cls.experimental{color:#ff8fb8;border-color:#7d3a55}
.arrangement-atlas-page .atlas-footer{margin-top:50px;border-top:1px solid var(--line);padding-top:16px;font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);line-height:1.7}
/* expansion: many-genre readability + family jump + selected count */
.arrangement-atlas-page .sel-count{color:var(--ink-faint);font-weight:600;letter-spacing:.06em}
.arrangement-atlas-page .fam-jump{background:var(--panel2);border:1px solid var(--line);color:var(--ink-dim);font-family:var(--mono);font-size:10.5px;padding:3px 8px;border-radius:3px;cursor:pointer}
.arrangement-atlas-page .fam-jump:hover{color:var(--ink);border-color:var(--ink-faint)}
.arrangement-atlas-page #energy-chart svg:hover .ec-line{opacity:.16;transition:opacity .12s}
.arrangement-atlas-page #energy-chart svg .ec-line:hover{opacity:1;stroke-width:3.4}

/* ===== UX pass (audit 2026-06-12) ===== */
/* skip link */
.arrangement-atlas-page .skip-link{position:fixed;left:-9999px;top:12px;z-index:120;background:var(--accent);color:#001529;font-weight:700;font-size:13px;padding:10px 16px;border-radius:4px;text-decoration:none}
.arrangement-atlas-page .skip-link:focus{left:16px}
/* visually hidden (live region etc.) */
.arrangement-atlas-page .visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
/* how-to strip */
.arrangement-atlas-page .howto{display:flex;gap:16px;align-items:center;flex-wrap:wrap;background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:12px 14px;margin-top:16px}
.arrangement-atlas-page .howto.hidden{display:none}
.arrangement-atlas-page .howto ol{display:flex;gap:16px;flex-wrap:wrap;list-style:none;counter-reset:ht}
.arrangement-atlas-page .howto li{font-size:12.5px;color:var(--ink-dim);max-width:250px;counter-increment:ht;display:flex;gap:8px;line-height:1.45}
.arrangement-atlas-page .howto li::before{content:counter(ht);background:var(--panel2);border:1px solid var(--line);color:var(--accent);font-family:var(--mono);width:20px;height:20px;flex:none;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;font-size:10.5px}
.arrangement-atlas-page .howto-actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.arrangement-atlas-page .howto .cta{background:var(--accent);border:none;color:#001529;font-weight:700;font-size:12px;padding:9px 14px;border-radius:4px;cursor:pointer}
.arrangement-atlas-page .howto .dismiss{background:none;border:1px solid var(--line);color:var(--ink-dim);font-size:11px;padding:8px 10px;border-radius:4px;cursor:pointer}
.arrangement-atlas-page .howto .dismiss:hover,.arrangement-atlas-page .howto .cta:hover{filter:brightness(1.1)}
/* selector collapse toggle */
.arrangement-atlas-page .sel-toggle{background:var(--panel2);border:1px solid var(--line);color:var(--ink);font-family:var(--mono);font-size:10.5px;padding:4px 10px;border-radius:3px;cursor:pointer}
.arrangement-atlas-page .sel-toggle:hover{border-color:var(--ink-faint)}
.arrangement-atlas-page .selectorbar.collapsed #chips,.arrangement-atlas-page .selectorbar.collapsed .sel-actions{display:none}
.arrangement-atlas-page .selectorbar.collapsed{padding:8px 0 6px}
/* inspector */
.arrangement-atlas-page .inspector{position:fixed;right:18px;bottom:18px;z-index:90;width:min(380px,calc(100vw - 24px));background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--insp-c,var(--accent));border-radius:6px;padding:13px 15px;box-shadow:0 12px 40px rgba(0,0,0,.55)}
.arrangement-atlas-page .inspector[hidden]{display:none}
.arrangement-atlas-page .inspector h3{font-size:13px;display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.arrangement-atlas-page .inspector h3 small{color:var(--ink-faint);font-family:var(--mono);font-size:10px;font-weight:400}
.arrangement-atlas-page .insp-x{background:none;border:none;color:var(--ink-faint);font-size:18px;cursor:pointer;line-height:1;padding:0 2px}
.arrangement-atlas-page .insp-x:hover{color:var(--ink)}
.arrangement-atlas-page .insp-meta{font-family:var(--mono);font-size:11px;color:var(--ink-dim);margin-top:7px;line-height:1.7}
.arrangement-atlas-page .insp-note{font-size:12px;color:var(--ink-dim);margin-top:6px;line-height:1.5}
.arrangement-atlas-page .insp-actions{display:flex;gap:8px;margin-top:10px}
.arrangement-atlas-page .insp-actions button{background:var(--panel);border:1px solid var(--line);color:var(--ink-dim);font-family:var(--mono);font-size:10.5px;padding:6px 10px;border-radius:3px;cursor:pointer}
.arrangement-atlas-page .insp-actions button:hover{color:var(--ink);border-color:var(--ink-faint)}
/* toast */
.arrangement-atlas-page .atlas-toast{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;z-index:95;background:var(--panel2);border:1px solid var(--line);color:var(--ink);font-size:12.5px;padding:10px 14px;border-radius:5px;display:flex;gap:12px;align-items:center;box-shadow:0 10px 30px rgba(0,0,0,.5);max-width:calc(100vw - 24px)}
.arrangement-atlas-page .atlas-toast[hidden]{display:none}
.arrangement-atlas-page .atlas-toast button{background:none;border:1px solid var(--line);color:var(--accent);font-family:var(--mono);font-size:10.5px;padding:4px 10px;border-radius:3px;cursor:pointer;flex:none}
/* lab cards are buttons now */
.arrangement-atlas-page .lab-card{display:block;width:100%;text-align:left;font:inherit;color:inherit;-webkit-appearance:none;appearance:none}
.arrangement-atlas-page .lab-card .lc-h{font-size:14px;font-weight:700;display:block}
.arrangement-atlas-page .lab-card .lin{display:block}
.arrangement-atlas-page .lab-card.open .note,.arrangement-atlas-page .lab-card.open .delta{display:block}
/* matrix: sticky genre column + scroll shadows */
.arrangement-atlas-page table.matrix th:first-child{position:sticky;left:0;z-index:3;background:var(--panel)}
.arrangement-atlas-page table.matrix td:first-child{position:sticky;left:0;z-index:2;background:var(--panel)}
.arrangement-atlas-page .matrix-scroll{background:
  linear-gradient(90deg,var(--panel) 30%,rgba(7,26,43,0)) left/24px 100%,
  linear-gradient(270deg,var(--panel) 30%,rgba(7,26,43,0)) right/24px 100%,
  radial-gradient(farthest-side at 0 50%,rgba(0,0,0,.5),transparent) left/14px 100%,
  radial-gradient(farthest-side at 100% 50%,rgba(0,0,0,.5),transparent) right/14px 100%;
  background-repeat:no-repeat;background-attachment:local,local,scroll,scroll}
/* footer links */
.arrangement-atlas-page .foot-links{margin-top:10px;color:var(--ink-dim)}
.arrangement-atlas-page .atlas-footer a{color:var(--accent);text-decoration:none}
.arrangement-atlas-page .atlas-footer a:hover{text-decoration:underline}
/* tabs overflow affordance (fade hides when scrolled to the end) */
@media(max-width:760px){
  .arrangement-atlas-page nav.tabs{-webkit-mask-image:linear-gradient(90deg,#000 0,#000 calc(100% - 34px),transparent);mask-image:linear-gradient(90deg,#000 0,#000 calc(100% - 34px),transparent)}
  .arrangement-atlas-page nav.tabs.at-end{-webkit-mask-image:none;mask-image:none}
  .arrangement-atlas-page #chips{max-height:44vh;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px}
}
/* stack timeline label over track on phones */
@media(max-width:600px){
  .arrangement-atlas-page .tl-row{flex-direction:column;gap:3px;margin-bottom:12px}
  .arrangement-atlas-page .tl-label{flex:none;width:100%;flex-direction:row;align-items:baseline;justify-content:space-between;padding-right:0;gap:8px}
  .arrangement-atlas-page .tl-track{width:100%}
  .arrangement-atlas-page .ruler{margin-left:0}
  .arrangement-atlas-page .inspector{left:10px;right:10px;bottom:10px;width:auto}
  .arrangement-atlas-page .howto-actions{margin-left:0}
}
/* comfortable touch targets on coarse pointers */
@media(pointer:coarse){
  .arrangement-atlas-page .chip{min-height:38px;padding:8px 12px}
  .arrangement-atlas-page .sel-actions button,.arrangement-atlas-page .sel-toggle,.arrangement-atlas-page .lab-filters button,.arrangement-atlas-page .chart-controls button{min-height:38px;padding:8px 12px}
  .arrangement-atlas-page nav.tabs button{padding:14px 16px}
  .arrangement-atlas-page .fam-jump{min-height:38px}
}