:root{--bg:#071018;--panel:#0c1722;--line:#203142;--text:#eef5fa;--muted:#8da2b3;--blue:#1b87ff;--green:#34d399;--red:#ef6f6c}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 75% -10%,#12304b 0,transparent 36%),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif}button,input{font:inherit}main{max-width:1440px;margin:auto;padding:34px 42px 22px}header{display:flex;justify-content:space-between;align-items:flex-end;padding:24px 0 28px;border-bottom:1px solid var(--line)}.eyebrow,.sectionTitle span{font:700 11px ui-monospace,monospace;letter-spacing:.18em;color:#65b3ff}h1{font-size:42px;letter-spacing:-.04em;margin:8px 0 4px}.sectionTitle p,header p{margin:0;color:var(--muted)}.headerStat{border-left:2px solid var(--blue);padding-left:18px;display:grid;grid-gap:3px;gap:3px;min-width:205px}.headerStat small,.headerStat span{color:var(--muted);font-size:12px}.headerStat b{font-size:20px}nav{height:64px;align-items:center;gap:18px;border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;background:#071018eF;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);z-index:4}.seg,nav{display:flex}.seg{background:#111d28;padding:3px;border-radius:8px}.seg button{border:0;color:var(--muted);background:transparent;padding:8px 16px;border-radius:6px;cursor:pointer}.seg button.on{background:#24384b;color:white;box-shadow:0 1px 8px #0007}nav a{margin-left:auto;color:#83bcf5;text-decoration:none;font-size:13px}.workspace{display:grid;grid-template-columns:minmax(390px,.83fr) 1.17fr;grid-gap:22px;gap:22px;padding:28px 0 60px}.flow,.inspector,.state{background:linear-gradient(145deg,#0e1b27,#0a141e);border:1px solid var(--line);border-radius:14px}.flow{padding:18px}.flowHint{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:11px;margin:0 6px 16px;text-transform:uppercase;letter-spacing:.1em}.flowHint i{height:1px;background:var(--line);flex:1 1}.flowRow{flex-direction:column}.flowRow,.node{display:flex;align-items:center}.node{--accent:#58a6ff;width:100%;border:1px solid var(--line);border-left:3px solid var(--accent);background:#111e2a;color:white;border-radius:9px;text-align:left;padding:10px 12px;cursor:pointer;transition:.16s}.node.selected,.node:hover{border-color:var(--accent);transform:translateX(3px);background:#162636}.node .order{font:600 11px ui-monospace;color:var(--muted);margin-right:13px}.node span:nth-child(2){display:grid;grid-gap:3px;gap:3px}.node b{font-size:13px}.node small{font:11px ui-monospace;color:var(--muted)}.node em{margin-left:auto;font:700 9px ui-monospace;color:#8dd7ff;border:1px solid #2c6790;padding:3px 6px;border-radius:10px}.arrow{height:13px;color:#4c6477;font-size:12px}.inspector{padding:30px;position:-webkit-sticky;position:sticky;top:88px;height:max-content}.tag{font:800 9px ui-monospace;padding:5px 8px;border-radius:4px;color:#071018;letter-spacing:.1em}.inspector h2{font-size:28px;margin:18px 0 8px}.inspector>code{color:#8ec5ff}.inspector h3{font-size:11px;text-transform:uppercase;letter-spacing:.13em;color:var(--muted);margin:30px 0 9px}.formula{font:15px/1.7 ui-monospace;background:#071018;padding:18px;border-radius:8px;border:1px solid #1b3042}.compare{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px;margin-top:20px}.compare article{border:1px solid var(--line);border-radius:9px;padding:16px;background:#0b151f}.compare article.focus{border-color:var(--blue);background:#10243a}.compare label{font:700 11px ui-monospace;color:#77baff}.compare p{font-size:13px;line-height:1.55;color:#c2d0da;min-height:61px}.compare code{font-size:10px;color:var(--muted)}.notice{margin-top:20px;padding:15px;border-left:2px solid #f59e0b;background:#241d10;display:grid;grid-gap:5px;gap:5px}.notice b{font-size:12px;color:#ffd27c}.notice span{font-size:12px;color:#c9b995;line-height:1.5}.state{padding:32px;margin-bottom:30px}.sectionTitle h2{font-size:30px;margin:7px 0}.dropgrid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px;margin:26px 0}.filebox{min-height:126px;border:1px dashed #36536b;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;cursor:pointer;background:#0a1520;text-align:center;padding:12px}.filebox:hover{border-color:var(--blue);background:#0d1d2d}.filebox input{display:none}.filebox>span{font-size:25px;color:#5aaeff}.filebox b{font-size:13px;max-width:95%;overflow:hidden;text-overflow:ellipsis}.filebox small{font-size:11px;color:var(--muted)}.controls{display:flex;align-items:end;gap:12px;padding:15px 0}.controls label{font:11px ui-monospace;color:var(--muted);display:grid;grid-gap:5px;gap:5px}.controls input{width:120px;background:#071018;border:1px solid var(--line);color:white;padding:9px;border-radius:6px}.controls button{background:var(--blue);color:white;border:0;padding:10px 20px;border-radius:7px;font-weight:700;cursor:pointer}.controls button:disabled{opacity:.5}.controls strong{margin-left:auto;font-size:13px}.controls strong.bad{color:var(--red)}.controls strong.good{color:var(--green)}.error{background:#35191b;color:#ffb6b3;padding:12px;border-radius:7px;font-size:13px}.results{display:grid;grid-template-columns:minmax(600px,1fr) 250px;grid-gap:15px;gap:15px;margin-top:14px}.tableWrap{overflow:auto;border:1px solid var(--line);border-radius:8px}table{border-collapse:collapse;width:100%;font:11px ui-monospace}td,th{text-align:left;padding:10px;border-bottom:1px solid #182938;white-space:nowrap}th{color:var(--muted);background:#09131c;position:-webkit-sticky;position:sticky;top:0}.dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:8px}.pass .dot{background:var(--green)}.fail .dot{background:var(--red)}.fail td{color:#f1c0be}.first{border:1px solid #713d3d;background:#261516;border-radius:8px;padding:18px;height:max-content}.first>span{font:700 9px ui-monospace;color:#ff8d88;letter-spacing:.08em}.first h3{font:18px ui-monospace;margin:12px 0}.first p{font:12px ui-monospace}.first small{display:block;color:#c5a6a3;line-height:1.55;margin-top:18px}footer{display:flex;gap:22px;border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:12px}footer b{color:#8ec5ff}@media(max-width:900px){main{padding:18px}.workspace{grid-template-columns:1fr}.inspector{position:static}.dropgrid,.results{grid-template-columns:1fr}.headerStat{display:none}.compare{grid-template-columns:1fr}.controls{flex-wrap:wrap}.controls strong{width:100%;margin:0}}.fileActions{display:flex;gap:6px;margin-top:6px}.fileActions button,.fileActions label{border:1px solid #31516c;background:#102233;color:#9ed0ff;padding:6px 8px;border-radius:5px;font-size:10px;cursor:pointer}.fileActions button{border-color:#235f94;background:#123457}.fileActions button:hover,.fileActions label:hover{color:white;border-color:#5aaeff}.exampleHint{margin:-14px 0 14px;color:var(--muted);font-size:11px}.tensorLab{margin:0 0 34px;background:linear-gradient(145deg,#0e1b27,#08131d);border:1px solid var(--line);border-radius:14px;overflow:hidden}.labHead{display:flex;align-items:flex-end;justify-content:space-between;padding:30px 32px 24px;border-bottom:1px solid var(--line)}.labHead>div:first-child>span{font:700 10px ui-monospace;color:#65b3ff;letter-spacing:.16em}.labHead h2{font-size:30px;margin:7px 0}.labHead p{margin:0;color:var(--muted);font-size:13px}.labFormula{display:grid;grid-gap:7px;gap:7px;background:#071018;border:1px solid #254158;padding:13px 16px;border-radius:8px}.labFormula small{color:var(--muted);font-size:10px}.labFormula code{color:#94d3ff;font-size:12px}.labTabs{display:grid;grid-template-columns:repeat(4,1fr);padding:14px 18px;grid-gap:8px;gap:8px;background:#09131d}.labTabs button{display:grid;text-align:left;grid-gap:4px;gap:4px;padding:12px 14px;background:#0f1c28;border:1px solid var(--line);border-radius:8px;color:var(--text);cursor:pointer}.labTabs button small{color:var(--muted);font:10px ui-monospace}.labTabs button.active{border-color:#258df2;background:#102a42;box-shadow:inset 0 -2px #258df2}.labStage{padding:24px 28px;min-height:560px}.sceneTitle{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.sceneTitle>div{display:grid;grid-gap:5px;gap:5px}.sceneTitle small,.sceneTitle span{color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.1em}.sceneTitle b{font-size:15px}.sceneTitle code{color:#7fbfff}.calc{text-align:right;background:#071018;border:1px solid #28445c;border-radius:8px;padding:10px 14px}.calc em{color:#ffad58;font-style:normal}.cubeGrid{display:grid;grid-template-columns:repeat(12,1fr);grid-gap:5px;gap:5px;perspective:800px}.cubeCell,.matrixCell{--cell:#5ab0ff;position:relative;min-height:56px;background:color-mix(in srgb,var(--cell) 16%,#0a151f);border:1px solid color-mix(in srgb,var(--cell) 45%,#203142);border-radius:6px;padding:7px;display:grid;align-content:center;justify-items:center;grid-gap:2px;gap:2px;transition:.22s}.cubeCell small,.matrixCell small{font:8px ui-monospace;color:var(--muted)}.cubeCell b,.matrixCell b{font:15px ui-monospace}.cubeCell.hot,.matrixCell.hot{background:var(--cell);color:#05101a;border-color:white;transform:translateY(-5px) scale(1.06);box-shadow:0 10px 28px color-mix(in srgb,var(--cell) 50%,transparent);z-index:2}.cubeCell.hot small,.matrixCell.hot em,.matrixCell.hot small{color:#102131}.offsetPath{justify-content:center;gap:8px;margin:22px 0}.offsetPath,.offsetPath>div{display:flex;align-items:center}.offsetPath>div{gap:7px}.offsetPath span{display:grid;place-items:center;width:21px;height:21px;background:#1b87ff;border-radius:50%;font:10px ui-monospace}.offsetPath code{background:#071018;padding:8px;border-radius:5px;color:#b8d8ef}.offsetPath i{color:#637b8d;font-style:normal}.storageBlock{margin-top:16px;min-width:0}.storageBlock header{display:flex;justify-content:space-between;margin-bottom:8px;color:var(--muted);font-size:10px}.memoryRow{display:flex;overflow-x:auto;padding:7px 3px 14px;gap:4px}.memCell{min-width:70px;min-height:63px;border:1px solid #2a4052;background:#0a151f;display:grid;place-items:center;border-radius:5px;transition:.2s}.memCell small,.memCell span{font:8px ui-monospace;color:#6f8799}.memCell b{font:14px ui-monospace}.memCell.hot{border-color:#ff9c55;background:#3a2416;transform:translateY(-4px);box-shadow:0 8px 20px #ff9c5533}.dualGrid{display:grid;grid-template-columns:1fr 170px 1fr;align-items:center;grid-gap:22px;gap:22px;padding:22px;background:#08121b;border:1px solid #1d3243;border-radius:10px}.matrix{display:grid;grid-gap:7px;gap:7px}.matrixCell{min-height:75px}.matrixCell em{font:8px ui-monospace;color:#658094;font-style:normal}.mapping{display:grid;text-align:center;grid-gap:10px;gap:10px}.mapping code{font-size:10px;color:#9dcfff}.mapping i{font-style:normal;color:#ffae5d;font-size:11px}.arrowLabel{text-align:center;color:var(--muted);font-size:10px;line-height:1.6}.arrowLabel strong{color:#66b7ff}.explainStrip{margin:15px 0;padding:12px 15px;border-left:2px solid #42c99a;background:#0c2825;display:flex;gap:20px;font-size:12px}.explainStrip span{color:#9bbdb6}.explainStrip em{color:#67e9cf;font-style:normal}.explainStrip.warn{border-color:#ff9c55;background:#2a1d10}.explainStrip.warn span{color:#d2b898}.broadcastGrid{display:grid;grid-template-columns:1fr 40px .45fr 40px 1fr;grid-gap:12px;gap:12px;align-items:center;background:#08121b;border:1px solid #1d3243;border-radius:10px;padding:22px}.broadcastGrid h4{font-size:10px;color:var(--muted);font-weight:500}.equals,.plus{text-align:center;font-size:25px;color:#5a7588}.matrix.compact .matrixCell{min-height:65px}.broadcastMap{display:grid;grid-template-columns:1fr 1.2fr 1fr;grid-gap:12px;gap:12px;align-items:center;margin:15px 0;text-align:center}.broadcastMap code{background:#071018;padding:11px;border-radius:6px;color:#8dceff}.broadcastMap span{font-size:11px;color:#ffb56f}.sourceMemory{display:grid;grid-template-columns:1fr 1fr;grid-gap:22px;gap:22px}.transport{display:flex;align-items:center;gap:8px;padding:15px 22px;border-top:1px solid var(--line);background:#09131d}.transport button{border:1px solid #2c485e;background:#102130;color:white;border-radius:6px;height:34px;min-width:34px;cursor:pointer}.transport button.play{padding:0 18px;background:#176fc4;border-color:#2695f7}.timeline{display:flex;align-items:center;gap:3px;flex:1 1;margin:0 12px}.timeline i{height:4px;flex:1 1;background:#233544;border-radius:3px}.timeline i.done{background:#326c9b}.timeline i.now{background:#ff9c55;box-shadow:0 0 8px #ff9c55}.transport label{font-size:10px;color:var(--muted)}.transport select{margin-left:6px;background:#0b1822;color:white;border:1px solid #2c485e;padding:5px;border-radius:4px}.transport>span{font:10px ui-monospace;color:var(--muted);min-width:42px;text-align:right}@media(max-width:900px){.labHead{display:grid;grid-gap:18px;gap:18px}.labTabs{grid-template-columns:1fr 1fr}.labStage{padding:18px;min-height:0}.cubeGrid{grid-template-columns:repeat(4,1fr)}.dualGrid{grid-template-columns:1fr}.mapping{margin:8px 0}.broadcastGrid{grid-template-columns:1fr}.equals,.plus{transform:rotate(90deg)}.broadcastMap,.sourceMemory{grid-template-columns:1fr}.sceneTitle{align-items:stretch}.sceneTitle .arrowLabel{display:none}.offsetPath{align-items:stretch;overflow-x:auto;justify-content:flex-start}.offsetPath>div{flex:none}.transport label{display:none}}.homeLink{color:#7fc2ff!important;margin-left:0!important}.chapterNav{margin-bottom:28px}.chapterNav span{margin-left:auto;color:#e9f4fc;font-size:13px;border-bottom:2px solid #1b87ff;padding:8px 3px}.chapterHome{min-height:100vh}.chapterIntro{padding:58px 0 28px;max-width:720px}.chapterCard>span,.chapterIntro>span{font:700 10px ui-monospace;color:#66b7ff;letter-spacing:.15em}.chapterIntro h2{font-size:34px;margin:8px 0}.chapterIntro p{color:var(--muted);line-height:1.6}.chapterCards{display:grid;grid-template-columns:1fr 1fr;grid-gap:22px;gap:22px;margin-bottom:70px}.chapterCard{position:relative;min-height:390px;padding:34px;border:1px solid var(--line);border-radius:15px;text-decoration:none;color:var(--text);overflow:hidden;display:flex;flex-direction:column;transition:.2s;background:linear-gradient(145deg,#101e2a,#09141e)}.chapterCard:before{content:"";position:absolute;width:240px;height:240px;border-radius:50%;right:-90px;top:-90px;background:var(--glow);filter:blur(4px);opacity:.16}.chapterCard:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:0 18px 50px #0006}.chapterCard.debugCard{--accent:#399fff;--glow:#168bff}.chapterCard.tensorCard{--accent:#a879ff;--glow:#9b63ff}.chapterCard h2{font-size:27px;line-height:1.2;max-width:440px;margin:18px 0 12px}.chapterCard p{color:#a8bac7;line-height:1.65;max-width:500px}.chapterCard ul{padding:0;list-style:none;display:grid;grid-gap:9px;gap:9px;margin:22px 0}.chapterCard li{font:11px ui-monospace;color:#8eb6d1}.chapterCard li:before{content:"◇";color:var(--accent);margin-right:9px}.chapterCard>b{margin-top:auto;color:var(--accent);font-size:13px}.tensorLab:first-of-type{margin-top:28px}@media(max-width:900px){.chapterCards{grid-template-columns:1fr}.chapterCard{min-height:330px}.chapterNav span{display:none}nav .homeLink{width:auto}.chapterIntro{padding-top:34px}}