:root{
  --bg:#f5f2e9;--paper:#fffdf7;--ink:#17221b;--muted:#6b736d;--line:#dcd8cd;
  --green:#173d2a;--green2:#2f6b49;--red:#a33a33;--blue:#315e9d;--gold:#b58a3b;
  --shadow:0 14px 40px rgba(24,38,28,.10)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}
a{color:inherit}
.site-shell{max-width:1180px;margin:0 auto;padding:20px 18px 52px}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:4px 0 18px}
.brand{font-weight:900;letter-spacing:-.02em;text-decoration:none;font-size:20px}
.badge{font-size:12px;font-weight:800;color:var(--green2);background:#eaf3ed;border:1px solid #c8dccf;padding:7px 10px;border-radius:999px}
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.55fr);gap:24px;align-items:end;padding:38px 0 28px}
.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--green2);font-weight:900}
h1{font-size:clamp(34px,6vw,72px);line-height:.95;letter-spacing:-.04em;margin:10px 0 14px}
.lead{font-size:clamp(16px,2vw,20px);line-height:1.5;color:var(--muted);max-width:760px;margin:0}
.hero-note{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow);font-size:14px;line-height:1.5;color:#4f5b53}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin:22px 0 14px}
.section-head h2{font-size:28px;margin:0}
.section-head p{margin:0;color:var(--muted);font-size:14px}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0 20px}
.search{flex:1;min-width:230px;border:1px solid var(--line);background:white;border-radius:12px;padding:12px 14px;font:inherit}
.filter{border:1px solid var(--line);background:white;border-radius:12px;padding:12px 14px;font:inherit}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.thumb{aspect-ratio:16/10;overflow:hidden;background:#e7e1d5}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.card-body{padding:16px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-kicker{font-size:12px;color:var(--green2);font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.card h3{font-size:22px;line-height:1.1;margin:0}
.card p{font-size:14px;line-height:1.45;color:var(--muted);margin:0}
.card-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto}
.pill{font-size:12px;background:#f0eee6;border:1px solid #e2ded2;padding:6px 8px;border-radius:999px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;border:0;border-radius:12px;padding:12px 15px;min-height:44px;font-weight:900;cursor:pointer}
.btn.primary{background:var(--green);color:white}
.btn.secondary{background:#ece9df;color:var(--ink)}
.empty{display:none;padding:18px;border:1px dashed #c9c4b7;border-radius:14px;color:var(--muted);text-align:center}
.footer{margin-top:34px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
@media(max-width:860px){.hero{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.site-shell{padding:14px 10px 34px}.topbar{align-items:flex-start}.grid{grid-template-columns:1fr}.hero{padding-top:22px}.section-head{align-items:flex-start;flex-direction:column}}

.map-shell{max-width:1220px;margin:0 auto;padding:16px 18px 48px}
.map-top{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:10px}
.back{font-weight:800;text-decoration:none;color:var(--green2)}
.progress-box{min-width:210px}
.progress-label{display:flex;justify-content:space-between;gap:16px;font-size:13px;color:var(--muted);margin-bottom:8px}
.progress{height:8px;background:#dedbd2;border-radius:999px;overflow:hidden}
.progress>span{display:block;height:100%;width:0;background:var(--green2);transition:width .35s ease}
.map-hero{padding:10px 0 16px}
.map-hero h1{font-size:clamp(30px,4.8vw,54px);max-width:900px}
.layout{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(310px,.55fr);gap:18px;align-items:start}
.map-card,.task-card{background:var(--paper);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.map-card{padding:12px}
.map-frame{position:relative;overflow:hidden;border-radius:14px;background:#e7e1d5;line-height:0}
.map-frame img{display:block;width:100%;height:auto}
.map-shade{position:absolute;inset:0;background:rgba(10,22,15,.05);pointer-events:none}
.hotspot{position:absolute;transform:translate(-50%,-50%);width:46px;height:46px;border:0;border-radius:50%;background:rgba(255,253,247,.94);box-shadow:0 0 0 4px rgba(255,255,255,.55),0 6px 18px rgba(20,30,24,.22);cursor:pointer;display:grid;place-items:center;color:var(--green);font-weight:900;line-height:1;transition:transform .15s ease,background .15s ease,box-shadow .15s ease}
.hotspot::after{content:"";width:11px;height:11px;border-radius:50%;background:currentColor}
.hotspot:hover,.hotspot:focus-visible{transform:translate(-50%,-50%) scale(1.08);outline:3px solid rgba(46,105,72,.28)}
.hotspot.wrong{animation:shake .25s linear 1;background:#fff0ee;color:var(--red)}
.hotspot.correct{background:#e8f5ec;color:var(--green2)}
@keyframes shake{25%{margin-left:-5px}75%{margin-left:5px}}
.pin{position:absolute;transform:translate(-50%,-100%);pointer-events:none;display:flex;flex-direction:column;align-items:center;gap:4px;z-index:2}
.pin-label{white-space:nowrap;background:rgba(20,31,23,.92);color:white;font-size:11px;font-weight:800;padding:5px 8px;border-radius:8px;line-height:1.1}
.pin-dot{width:12px;height:12px;border-radius:50%;background:var(--gold);border:2px solid white;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.task-card{padding:20px;position:sticky;top:14px}
.kicker{font-size:13px;color:var(--green2);font-weight:800;margin-bottom:8px}
.task-card h2{font-size:clamp(22px,2.7vw,31px);line-height:1.08;margin:0 0 12px}
.question{font-size:17px;line-height:1.5;margin:0 0 16px}
.hint{display:none;margin:0 0 14px;padding:12px 14px;border-radius:12px;background:#f0eee7;color:#4f5a53;font-size:14px;line-height:1.45}
.feedback{min-height:48px;margin:10px 0 0;padding:12px 14px;border-radius:12px;background:#f3f1ea;color:#4f5a53;font-size:14px;line-height:1.45}
.feedback.ok{background:#e8f5ec;color:#214d34}.feedback.no{background:#fff0ee;color:#7f2a25}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.answers{display:grid;gap:9px;margin-top:14px}
.answer{text-align:left;border:1px solid var(--line);background:white;padding:12px 14px;border-radius:12px;cursor:pointer;min-height:46px;color:var(--ink)}
.answer:hover,.answer:focus-visible{border-color:#8ea896;outline:none;background:#f7fbf8}
.answer.good{border-color:#77a989;background:#ebf7ef}.answer.bad{border-color:#d49a95;background:#fff3f2}
.timeline{display:flex;gap:8px;overflow-x:auto;padding:10px 2px 2px;margin-top:8px;scrollbar-width:thin}
.t-node{min-width:104px;padding:9px 10px;border:1px solid var(--line);border-radius:12px;background:#f7f4ed;font-size:12px;line-height:1.25}
.t-node strong{display:block;font-size:14px;margin-bottom:3px}.t-node.done{background:#edf6f0;border-color:#aac7b4}
.legend-mini{display:flex;gap:12px;flex-wrap:wrap;margin-top:10px;color:var(--muted);font-size:12px}.legend-mini span{display:flex;align-items:center;gap:6px}.swatch{width:22px;height:3px;border-radius:99px}
.final{display:none;margin-top:16px;padding:18px;border-radius:16px;background:#edf6f0;border:1px solid #b8d1c0}.final h3{margin:0 0 8px;font-size:22px}.final p{margin:0 0 12px;color:#456052;line-height:1.5}
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,18,.72);display:none;align-items:center;justify-content:center;padding:18px;z-index:50}
.modal{width:min(1050px,96vw);max-height:94vh;overflow:auto;background:var(--paper);border-radius:20px;box-shadow:0 22px 80px rgba(0,0,0,.32)}
.modal-head{display:flex;justify-content:space-between;gap:14px;align-items:center;padding:16px 18px;border-bottom:1px solid var(--line)}.modal-head h3{margin:0;font-size:20px}
.close{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:white;cursor:pointer;font-size:22px}
.modal-body{padding:14px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(270px,.65fr);gap:14px}
.detail-frame{position:relative;line-height:0;overflow:hidden;border-radius:14px;background:#e5dfd2}.detail-frame img{width:100%;display:block}
.detail-side{padding:6px 4px}.detail-side h4{font-size:22px;margin:0 0 10px}.detail-side p{line-height:1.5;margin:0 0 12px}
.detail-hotspot{position:absolute;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.94);box-shadow:0 0 0 4px rgba(255,255,255,.45),0 6px 20px rgba(0,0,0,.24);cursor:pointer;color:var(--red)}
.detail-hotspot::after{content:"";display:block;margin:auto;width:11px;height:11px;border-radius:50%;background:currentColor}
.detail-hotspot.wrong{background:#fff0ee;animation:shake .25s linear 1}.detail-hotspot.correct{background:#e8f5ec;color:var(--green2)}
.small-note{font-size:12px;color:var(--muted);line-height:1.4}
@media(max-width:900px){.map-top{align-items:flex-start;flex-direction:column}.progress-box{min-width:0;width:100%}.layout{grid-template-columns:1fr}.task-card{position:static}.modal-body{grid-template-columns:1fr}}
@media(max-width:560px){.map-shell{padding:12px 10px 34px}.map-card{padding:7px;border-radius:16px}.task-card{padding:16px;border-radius:16px}.hotspot{width:40px;height:40px}.pin-label{font-size:10px;padding:4px 6px}.question{font-size:16px}.modal-backdrop{padding:6px}.modal{border-radius:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}


/* ---- Atlas navigation v2 ---- */
.grade-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:18px}
.grade-card{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:22px;min-height:190px;display:flex;flex-direction:column;justify-content:space-between;text-decoration:none;box-shadow:var(--shadow);transition:transform .15s ease,border-color .15s ease}
.grade-card:hover{transform:translateY(-2px);border-color:#a9bdaf}
.grade-card.disabled{opacity:.62;box-shadow:none;cursor:default}
.grade-num{font-size:54px;line-height:.9;font-weight:950;letter-spacing:-.06em;color:var(--green)}
.grade-title{font-size:20px;font-weight:900;margin:10px 0 6px}
.grade-copy{font-size:13px;line-height:1.45;color:var(--muted)}
.status{display:inline-flex;align-self:flex-start;margin-top:16px;font-size:12px;font-weight:900;padding:6px 9px;border-radius:999px;background:#ece9df}
.status.live{background:#e7f4eb;color:#24583b;border:1px solid #c3dbc9}
.breadcrumbs{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--muted);margin:2px 0 8px}
.breadcrumbs a{text-decoration:none;color:var(--green2);font-weight:800}
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.topic-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:17px;display:flex;flex-direction:column;gap:9px;min-height:170px}
.topic-card.active{border-color:#9fb8a7;box-shadow:var(--shadow)}
.topic-index{font-size:11px;letter-spacing:.1em;text-transform:uppercase;font-weight:900;color:var(--green2)}
.topic-card h3{font-size:19px;line-height:1.15;margin:0}
.topic-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.4}
.topic-actions{margin-top:auto;display:flex;gap:8px;align-items:center}
.soon{font-size:12px;font-weight:800;color:var(--muted);background:#f0eee6;padding:7px 9px;border-radius:999px}
.group-title{margin:28px 0 12px;font-size:21px}
@media(max-width:960px){.grade-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.grade-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-grid{grid-template-columns:1fr}.grade-card{min-height:160px}.grade-num{font-size:46px}}