:root{color-scheme:dark;--bg:#0a1421;--card:#14263a;--ink:#f1f6fb;--muted:#afc2d4;--line:#38516a;--gold:#ffd27c;--blue:#83d4f5}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(140deg,#0a1421,#142a3b);color:var(--ink);font:16px/1.55 system-ui,Arial,sans-serif}a{color:#a9e3ff}header{position:sticky;top:0;background:#102136ee;backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:3}nav{max-width:1320px;margin:auto;padding:12px 18px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}nav strong{color:var(--gold)}main{max-width:1320px;margin:auto;padding:28px 18px 80px}.hero{padding:28px;background:linear-gradient(110deg,#173b50,#1c2d47);border:1px solid #587a8f;border-radius:18px}h1{line-height:1.15;font-size:clamp(2rem,4vw,3.8rem);margin:.2em 0}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--blue);font-size:.78rem;font-weight:700}.lead{font-size:1.13rem;max-width:82ch}.notice{background:#3a3028;border-left:4px solid var(--gold);padding:12px 18px;border-radius:8px}section{margin-top:30px}h2{margin-top:40px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:15px;min-width:0}.card h3{margin:0 0 6px}.muted{color:var(--muted)}.tiny{font-size:.82rem}.pill{display:inline-block;border:1px solid #658298;border-radius:99px;padding:2px 9px;margin:3px;color:#d8edfb;font-size:.82rem}audio{width:100%;margin:8px 0}table{width:100%;border-collapse:collapse;font-size:.86rem}th,td{text-align:left;border-bottom:1px solid var(--line);padding:6px 8px;vertical-align:top}th{color:var(--gold)}.scroll{max-height:420px;overflow:auto;border:1px solid var(--line);border-radius:8px}details{margin-top:8px}summary{cursor:pointer;color:var(--blue)}.links{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}.links a{display:block;padding:10px 12px;background:var(--card);border:1px solid var(--line);border-radius:9px;text-decoration:none}.links a:hover{border-color:var(--gold)}.group{border-top:1px solid var(--line);padding-top:18px;margin-top:24px}.timeline{height:28px;position:relative;background:#06131d;border-radius:6px;overflow:hidden;margin:6px 0}.span{position:absolute;top:3px;height:22px;border-radius:4px;background:#57b4da99}.span.teacher{background:#e4a667b8}.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:16px}.score{font-variant-numeric:tabular-nums;font-weight:700;color:var(--gold)}code{word-break:break-all}footer{border-top:1px solid var(--line);padding:25px;color:var(--muted)}

/* Listening-atlas landing page */
.atlas-hero{position:relative;overflow:hidden;padding:clamp(30px,5vw,62px);background:radial-gradient(circle at 85% 12%,#247c89 0,transparent 38%),linear-gradient(135deg,#183a55,#13233d 68%);box-shadow:0 22px 70px #030c19aa}
.atlas-hero:before{content:"";position:absolute;width:320px;height:320px;right:-95px;bottom:-190px;border:2px solid #8ed9e255;border-radius:50%;box-shadow:0 0 0 48px #83d4f511,0 0 0 100px #83d4f50b;pointer-events:none}
.atlas-hero>*{position:relative}.atlas-hero .lead{color:#dfebf3;max-width:72ch}.atlas-hero .eyebrow{color:#ffe0a3}
.atlas-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.atlas-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 17px;border:1px solid #85b4ce;border-radius:10px;color:#f4f9fc;text-decoration:none;font-weight:700;background:#ffffff12}.atlas-button:hover,.atlas-button:focus-visible{border-color:#fff;background:#ffffff25}.atlas-button.primary{background:#f4c876;color:#102137;border-color:#f4c876}.atlas-button.primary:hover,.atlas-button.primary:focus-visible{background:#ffe3aa}
.atlas-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:18px}.atlas-stat{background:#14283c;border:1px solid #38566a;border-radius:12px;padding:14px 16px}.atlas-stat strong{display:block;color:#ffe1a7;font-size:1.38rem;line-height:1.15}.atlas-stat span{display:block;color:#b9cbda;font-size:.83rem;margin-top:4px}
.atlas-section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:14px}.atlas-section-head h2{margin:0}.atlas-section-head p{margin:0;color:#b5cbd9;max-width:65ch}
.atlas-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.atlas-card-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.atlas-feature{display:flex;flex-direction:column;min-height:180px;padding:22px;border:1px solid #3d6077;border-radius:17px;background:linear-gradient(145deg,#19344a,#12273a);text-decoration:none;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.atlas-feature:hover,.atlas-feature:focus-visible{transform:translateY(-3px);border-color:#8fd7ee;box-shadow:0 16px 38px #020a16aa}.atlas-feature .kicker{text-transform:uppercase;letter-spacing:.12em;font-size:.74rem;font-weight:800;color:#9cdded}.atlas-feature h3{font-size:1.24rem;line-height:1.25;color:#fff;margin:13px 0 7px}.atlas-feature p{color:#bfd1df;margin:0 0 16px}.atlas-feature .action{margin-top:auto;color:#ffdc9d;font-weight:750}.atlas-feature.featured{background:linear-gradient(135deg,#255265,#193044);border-color:#75b5c9}
.atlas-note{border:1px solid #456678;border-radius:15px;background:#132b3d;padding:18px 21px}.atlas-note p{max-width:90ch}.atlas-note p:last-child{margin-bottom:0}
@media(max-width:900px){.atlas-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.atlas-card-grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.atlas-card-grid,.atlas-card-grid.three{grid-template-columns:1fr}.atlas-section-head{display:block}.atlas-section-head p{margin-top:8px}.atlas-feature{min-height:150px}.atlas-button{width:100%}}
.atlas-listen-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.atlas-listen-card{background:#152b3e;border:1px solid #3c5a70;border-radius:14px;padding:17px;min-width:0}.atlas-listen-card h3{font-size:1.04rem;margin:5px 0}.atlas-listen-card p{margin:6px 0}.atlas-listen-card a{display:inline-block;margin-top:7px;color:#ffe0a3;font-weight:750}.atlas-listen-card audio{margin:10px 0 2px}.atlas-listen-card code{font-size:.75rem}.atlas-filter{width:min(100%,520px);padding:12px 14px;background:#10283a;border:1px solid #66849a;border-radius:10px;color:#fff;font:inherit;margin:0 0 18px}.atlas-filter:focus{outline:2px solid #f4ca81;outline-offset:2px}.atlas-subnav{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}.atlas-subnav a{display:inline-block;padding:9px 13px;border:1px solid #5f8296;border-radius:9px;text-decoration:none;background:#163348;color:#d8ecf7}.atlas-subnav a:hover{border-color:#ffe0a3;color:#ffe0a3}
.atlas-listen-grid.wide{grid-template-columns:repeat(auto-fit,minmax(min(100%,460px),1fr))}.atlas-mini-plot{display:grid;grid-template-columns:62px 1fr;gap:5px 8px;align-items:center;margin:12px 0}.atlas-mini-plot .timeline{margin:0}.atlas-mini-plot b{font-size:.76rem;color:#d4e8f3}.atlas-mini-note{font-size:.79rem;color:#c6d9e7;margin:6px 0}.atlas-mini-events{margin:8px 0;padding-left:20px;font-size:.8rem;color:#d9e8f1}.atlas-mini-events li{margin:3px 0}.atlas-neighbor-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-top:12px}.atlas-neighbor-list{border:1px solid #47687a;background:#102638;border-radius:10px;padding:10px;min-width:0}.atlas-neighbor-list h4{margin:0 0 8px;font-size:.89rem;color:#ffe0a3}.atlas-neighbor-list ol{margin:0;padding:0;list-style:none}.atlas-neighbor-list li{padding:8px 0;border-top:1px solid #365167;overflow-wrap:anywhere;font-size:.77rem}.atlas-neighbor-list li:first-child{border-top:0}.atlas-neighbor-list audio{margin:3px 0}.atlas-neighbor-list .tiny{font-size:.75rem}@media(max-width:800px){.atlas-neighbor-columns{grid-template-columns:1fr}.atlas-listen-grid.wide{grid-template-columns:1fr}}