@import "https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500&family=Playfair+Display:ital,wght@0,500;1,500&display=swap";:root{--ink:#20211f;--paper:#f4f0e8;--muted:#85847d;--line:#d9d3c7;--panel:#ebe6dc;--serif:"Playfair Display", serif;--sans:"DM Sans", sans-serif;--mono:"DM Mono", monospace}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);font-family:var(--sans);margin:0;font-size:14px}main{grid-template-columns:270px 1fr;min-height:100vh;display:grid}aside{border-right:1px solid var(--line);flex-direction:column;gap:25px;padding:28px 25px;display:flex}.brand{font:500 11px/1.05 var(--mono);letter-spacing:.04em;align-items:center;gap:10px;display:flex}.brand b{font-weight:500}.brand small{font:10px var(--mono);color:var(--muted);align-self:flex-start;margin-left:auto}.mark{color:#ed8b5b;font-size:27px;line-height:1}.eyebrow{font:500 10px var(--mono);letter-spacing:.13em;color:var(--muted)}h1{font:500 42px/.98 var(--serif);letter-spacing:-.04em;margin:-18px 0 0}h1 em,h2 span{color:#ed8b5b;font-style:italic}.intro{color:#64635e;margin:-12px 0 0;line-height:1.55}.pipeline{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0 8px}.pipe{color:#8a8880;font:11px var(--mono);grid-template-columns:28px 1fr;gap:7px;margin-bottom:15px;display:grid}.pipe i{color:#b5afa4;font-style:normal}.pipe.active{color:var(--ink)}.pipe small{color:var(--muted);grid-column:2;margin-top:-4px;font-size:9px}.sources{flex-direction:column;gap:12px;display:flex}.sources .eyebrow{margin-bottom:2px}.source-row{align-items:center;gap:9px;font-size:12px;display:flex}.source-row b{font:10px var(--mono);color:var(--muted);margin-left:auto}.dot,.detail-dot{border-radius:50%;width:8px;height:8px;display:inline-block}.foot{color:#aaa49a;font:9px/1.55 var(--mono);letter-spacing:.08em;margin-top:auto}.content{min-width:0;padding:29px 35px 26px}header{justify-content:space-between;align-items:flex-end;margin-bottom:22px;display:flex}h2{font:500 23px var(--serif);margin:6px 0 0}h2 small{font:11px var(--mono);color:var(--muted);font-weight:400}.reset{color:var(--muted);font:10px var(--mono);cursor:pointer;background:0 0;border:0}.toolbar{border-top:1px solid var(--line);align-items:end;gap:12px;padding-top:15px;display:flex}.control{flex-direction:column;gap:7px;min-width:145px;display:flex}.control.wide{min-width:180px}.control span{font:9px var(--mono);color:var(--muted);letter-spacing:.1em}.control select{appearance:none;color:var(--ink);font:12px var(--mono);cursor:pointer;background:0 0;border:0;border-bottom:1px solid #bdb7ac;padding:0 18px 8px 0}.legend{height:41px;font:10px var(--mono);color:var(--muted);align-items:center;gap:19px;display:flex}.legend span{align-items:center;gap:7px;display:flex}.legend i{border-radius:50%;width:9px;height:9px;display:inline-block}.legend .gradient{background:linear-gradient(90deg,#69d391,#ec7598);border-radius:8px;width:70px}.legend .diff-Easy{background:#69d391}.legend .diff-Medium{background:#f3bd69}.legend .diff-Hard{background:#ec7598}.map-wrap{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:radial-gradient(at 53% 47%,#faf7f0 0%,#0000 57%);height:430px;position:relative}.map{background-image:linear-gradient(#e7e1d6 1px,#0000 1px),linear-gradient(90deg,#e7e1d6 1px,#0000 1px);background-size:25% 25%;position:absolute;inset:28px 31px 29px 39px;overflow:hidden}.map:after{content:"";pointer-events:none;background:radial-gradient(circle at 43% 33%,#0000 0 24%,#f4f0e880 60%);position:absolute;inset:0}.point{cursor:pointer;z-index:2;border:1px solid #20211f2e;border-radius:50%;width:10px;height:10px;transition:transform .16s,box-shadow .16s;position:absolute;transform:translate(-50%,-50%)}.point:hover,.point.selected{transform:translate(-50%,-50%)scale(1.7);box-shadow:0 0 0 4px #20211f1a}.point.selected{outline:1px solid var(--ink);outline-offset:3px}.axis{color:#aaa49a;font:9px var(--mono);letter-spacing:.08em;position:absolute}.axis.x{bottom:7px;right:32px}.axis.y{transform-origin:0 0;top:53%;left:-3px;transform:rotate(-90deg)}.cluster-label{color:#aaa49a;font:10px var(--mono);letter-spacing:.08em;z-index:1;pointer-events:none;line-height:1.4;position:absolute}.cluster-label small{font:italic 12px var(--serif);letter-spacing:0}.math{top:14%;left:8%}.practical{top:54%;right:6%}.combinatorial{bottom:6%;left:42%}.bottom{grid-template-columns:1fr 1.5fr;gap:30px;padding-top:20px;display:grid}.insight p{color:#5d5c57;max-width:390px;margin:9px 0 15px;line-height:1.55}.insight em{font-family:var(--serif);color:var(--ink)}.mini-tags{gap:7px;display:flex}.mini-tags span,.meta span{border:1px solid var(--line);font:9px var(--mono);color:var(--muted);padding:5px 7px}.selected{border-left:1px solid var(--line);padding-left:25px}.detail-head{align-items:center;gap:10px;margin:8px 0;display:flex}.detail-head h3{font:500 17px var(--serif);margin:0}.detail-head span{font:10px var(--mono);color:var(--muted)}.detail-head a{color:var(--ink);margin-left:auto;font-size:18px;text-decoration:none}.selected p{font:12px/1.55;color:#65635d;max-width:560px;margin:9px 0 12px}.meta{flex-wrap:wrap;gap:6px;display:flex}.meta span:first-child{color:var(--ink)}@media (width<=850px){main{grid-template-columns:1fr}aside{border-right:0;border-bottom:1px solid var(--line);gap:14px;padding:20px}.pipeline,.sources,.foot{display:none}.content{padding:24px 18px}.toolbar{flex-wrap:wrap}.control,.control.wide{min-width:calc(50% - 8px)}.map-wrap{height:360px}.bottom{grid-template-columns:1fr}.selected{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}}.content{grid-column:1/-1;width:100%;max-width:1450px;margin:auto;padding:28px 42px}.brand{font:11px var(--mono);border-bottom:1px solid var(--line);align-items:center;gap:10px;padding-bottom:17px;display:flex}.brand strong{letter-spacing:.1em;font-weight:500}.brand-sub{color:var(--muted);font-size:10px}.brand .reset{margin-left:auto}.hero{max-width:720px;padding:48px 0 28px}.hero h1{margin:10px 0 15px;font-size:48px;line-height:1.04}.hero p{color:#65635d;max-width:560px;margin:0;line-height:1.6}.source-tabs{border-bottom:1px solid var(--line);gap:10px;padding-bottom:20px;display:flex}.source-tab{border:1px solid var(--line);color:var(--muted);cursor:pointer;font:11px var(--mono);background:0 0;align-items:center;gap:8px;padding:11px 15px;display:flex}.source-tab.active{border-color:var(--ink);color:var(--ink);background:#eee9df}.source-tab i{border-radius:50%;width:8px;height:8px;display:inline-block}.source-tab span{color:var(--muted);font-size:9px}.toolbar{border:0;gap:15px;padding:18px 0 10px}.search{width:260px;font:17px var(--mono);color:var(--muted);border-bottom:1px solid #bdb7ac;align-items:center;gap:8px;padding:0 0 8px;display:flex}.search input{font:12px var(--mono);width:100%;color:var(--ink);background:0 0;border:0;outline:0}.map-title{justify-content:space-between;align-items:end;margin:19px 0 12px;display:flex}.map-title h2{font-size:20px}.map-title h2 small{font:10px var(--mono);color:var(--muted)}.map-title>b{font:17px var(--mono);font-weight:400}.map-title>b span{color:var(--muted);font-size:10px;font-weight:400}.atlas-body{grid-template-columns:215px minmax(0,1fr) 315px;gap:20px;display:grid}.clusters{border-top:1px solid var(--line)}.clusters .eyebrow{padding:13px 0 7px}.cluster{text-align:left;border:0;border-top:1px solid var(--line);width:100%;color:var(--muted);cursor:pointer;background:0 0;grid-template-columns:1fr auto;gap:4px;padding:10px 7px;display:grid}.cluster.active{color:var(--ink);background:#ebe6dc}.cluster b{font:11px var(--mono);align-items:center;gap:6px;font-weight:500;display:flex}.topic-marker{border-radius:50%;flex:none;width:8px;height:8px;display:inline-block}.cluster span{font:10px var(--mono)}.cluster small{font:10px/1.3 var(--sans);color:var(--muted);grid-column:1/-1}.atlas-body .map-wrap{height:485px}.atlas-body .selected{border-left:1px solid var(--line);padding-left:22px}.footer-note{color:#aaa49a;font:9px var(--mono);letter-spacing:.08em;border-top:1px solid var(--line);justify-content:space-between;margin-top:18px;padding-top:20px;display:flex}.map-stats{align-items:end;gap:18px;display:flex}.zoom-controls{align-items:center;gap:5px;display:flex}.zoom-controls button{border:1px solid var(--line);color:var(--muted);height:25px;font:10px var(--mono);cursor:pointer;background:0 0;padding:0 8px}.zoom-controls button:hover{border-color:var(--ink);color:var(--ink)}.zoom-controls span{font:10px var(--mono);text-align:center;min-width:30px;color:var(--ink)}.atlas-body .map-wrap{cursor:grab;overflow:hidden}.atlas-body .map-wrap:active{cursor:grabbing}.atlas-body .map{transform-origin:50%;transition:transform .16s}.zoom-hint{color:#aaa49a;font:9px var(--mono);pointer-events:none;position:absolute;bottom:8px;right:10px}@media (width<=1050px){.atlas-body{grid-template-columns:175px minmax(0,1fr)}.atlas-body .selected{border-left:0;border-top:1px solid var(--line);grid-column:1/-1;padding:18px 0}.content{padding:25px}.clusters{grid-row:1}.source-tabs{overflow:auto}.source-tab{white-space:nowrap}}.atlas-body{grid-template-columns:minmax(0,1fr) 315px;align-items:start}.clusters{flex-wrap:wrap;grid-column:1/-1;gap:7px;padding-top:10px;display:flex}.clusters .eyebrow{width:100%;padding:0 0 2px}.cluster{border:1px solid var(--line);border-top:1px solid var(--line);grid-template-columns:1fr auto;gap:3px 13px;width:auto;min-width:145px;padding:8px 10px}.cluster small{grid-column:1/-1}.atlas-body .selected{border-left:1px solid var(--line);border-top:0;grid-area:2/2;padding:0 0 0 22px}.point.selected{z-index:3;border-top:1px solid #20211f2e!important;border-left:0!important;outline:0!important;padding:0!important;transform:translate(-50%,-50%)!important;box-shadow:0 0 0 5px #d96a7752!important}@media (width<=1050px){.atlas-body{grid-template-columns:1fr}.atlas-body .selected{border-left:0;border-top:1px solid var(--line);grid-area:3/1;padding:18px 0 0}}