@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--paper:#f4f3ed;--ink:#202522;--muted:#737871;--line:#d9ddd3;--green:#cbea89;--deep:#243c2f;--coral:#df704f;--white:#fff;--serif:Georgia,'Noto Serif SC',serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 'DM Sans','Microsoft YaHei',sans-serif}button,input,select,textarea{font:inherit;color:inherit}button,a,select{touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);background:transparent;border-radius:6px;padding:8px 15px;transition:background .18s}button:hover{background:#e5e9df}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--coral);outline-offset:3px}.skip{position:absolute;top:-60px}.skip:focus{top:0;z-index:50;background:white}header{height:78px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 36px;gap:20px}.brand{display:flex;align-items:center;gap:7px;text-decoration:none;font-family:'Space Grotesk',sans-serif;letter-spacing:2px;font-size:16px;white-space:nowrap}.brand b{font-weight:400;color:var(--muted)}.mark{background:var(--ink);color:var(--green);display:grid;place-items:center;width:32px;height:32px;font-size:27px;line-height:1;margin-right:9px;border-radius:50%}.edition{font:10px 'DM Sans',sans-serif;color:var(--muted);letter-spacing:1px;margin-left:22px}.toolbar{display:flex;gap:8px}.toolbar button{font-size:12px}.toolbar .language{background:var(--ink);color:white;min-width:48px}.layout{display:grid;grid-template-columns:218px minmax(0,1fr);min-height:calc(100vh - 143px)}aside{border-right:1px solid var(--line);padding:34px 20px;display:flex;flex-direction:column}.rail-title{font:10px 'Space Grotesk',sans-serif;letter-spacing:2px;color:var(--muted);margin:0 12px 29px}nav{display:flex;flex-direction:column;gap:6px}nav a{display:flex;gap:15px;align-items:center;text-decoration:none;padding:13px 12px;border-radius:5px;font-size:13px;color:var(--muted)}nav a span{font:11px 'Space Grotesk';opacity:.6}nav a.active{background:var(--deep);color:white}nav a:hover:not(.active){background:#e4e8dd}.rail-bottom{margin-top:auto;padding:60px 12px 4px;font-size:11px;color:var(--muted)}.rail-bottom p{font-size:10px;letter-spacing:1px}.dot{display:inline-block;width:6px;height:6px;background:#6a8d52;border-radius:50%;margin-right:6px}main{padding:42px clamp(24px,4vw,76px) 32px;max-width:1600px;width:100%;margin:auto;align-self:start}.eyebrow{font:11px 'Space Grotesk','Microsoft YaHei',sans-serif;letter-spacing:2px;color:var(--muted);text-transform:uppercase;display:flex;align-items:center;gap:12px}.eyebrow:before{content:'';width:27px;height:1px;background:var(--coral)}h1,h2,h3,p{margin-top:0}h1{font:500 clamp(38px,4.7vw,72px)/1.16 'Space Grotesk','Microsoft YaHei',sans-serif;letter-spacing:-2px;margin:24px 0}h1 em{font-family:var(--serif);color:var(--deep);font-weight:400}h2{font:500 clamp(30px,3vw,48px)/1.23 'Space Grotesk','Microsoft YaHei',sans-serif;letter-spacing:-1px;margin:18px 0}h3{font-size:18px;line-height:1.5;margin:0 0 8px;font-weight:600}.lead{font-size:16px;color:#626a60;max-width:680px;line-height:1.9}.small{font-size:12px;color:var(--muted)}.intro-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}.intro-grid .lead{max-width:440px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.primary{background:var(--ink);border-color:var(--ink);color:white;display:inline-flex;align-items:center;justify-content:center;gap:28px;text-decoration:none;padding:12px 20px;border-radius:6px;font-size:14px}.primary:hover{background:var(--deep)}.link-btn{border:0;padding-left:0;text-decoration:underline;text-underline-offset:5px}.decision-art{background:#e7ecdf;border:1px solid #d5ddca;border-radius:12px;padding:30px;min-height:350px;position:relative;overflow:hidden}.art-top{font:10px 'Space Grotesk';letter-spacing:2px;display:flex;justify-content:space-between;color:#5e6f56}.art-input{padding:18px;border:1px solid #c2cdb6;background:#f7f9f3;margin-top:30px;border-radius:6px;color:#647258;font-size:12px}.art-input span{font-size:9px;display:block;letter-spacing:2px;margin-bottom:10px}.jev-word{font:600 75px/.9 'Space Grotesk';text-align:center;letter-spacing:-6px;padding:22px 0;color:var(--deep)}.art-path{width:1px;height:25px;background:#92a17f;margin:auto}.art-out{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.art-out div{background:var(--deep);color:#e1f4c8;padding:12px 5px;text-align:center;border-radius:4px;font:12px 'Space Grotesk'}.art-caption{text-align:center;font-size:10px;color:#657559;margin:16px 0 0}.stats{display:grid;grid-template-columns:1fr 1fr 1.4fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:36px;padding:25px 0;gap:22px}.stat strong{font:500 clamp(32px,3vw,46px) 'Space Grotesk';letter-spacing:-1.5px;display:block}.stat span{font-size:12px;color:var(--muted)}.stat-note{font-size:12px;color:var(--muted);align-self:center;line-height:1.7}.source-line{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted);margin-top:18px}.source-line a{white-space:nowrap}.chapter-heading{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:24px}.chapter-heading .lead{margin:0}.tag{display:inline-block;border:1px solid var(--line);border-radius:99px;padding:4px 10px;font-size:10px;white-space:nowrap;color:var(--muted)}.case-layout{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:22px}.video-wrap{background:#151a17;border-radius:8px;overflow:hidden}.video-wrap video{width:100%;aspect-ratio:16/9;object-fit:contain;display:block}.video-caption{padding:14px 18px;color:#d2dace;display:flex;justify-content:space-between;gap:12px;font-size:12px}.video-caption a{color:#ceeaaa}.case-menu{display:flex;flex-direction:column;gap:10px}.case-choice{text-align:left;padding:18px;border-radius:8px;background:#edeee7}.case-choice.active{border-color:#738361;background:#e2ebd5}.case-choice strong{display:block;font-size:15px;margin-bottom:5px}.case-choice span{display:block;font-size:11px;color:var(--muted)}.case-choice .case-index{color:#82926f;letter-spacing:2px;font-size:10px;margin-bottom:18px}.note{border-left:2px solid var(--coral);padding-left:14px;color:var(--muted);font-size:12px;margin-top:20px}.tabs{display:flex;gap:8px;margin:22px 0}.tabs button.active{background:var(--deep);color:white}.mechanism{display:grid;grid-template-columns:1fr 50px 1fr;gap:18px;align-items:center;padding:30px;background:#e7ecdf;border:1px solid #d3ddc9;border-radius:10px}.state-card{background:#f9faf6;padding:25px;border-radius:7px;border:1px solid #d6dfcd;font-size:17px;line-height:1.9}.mono{font:11px 'Space Grotesk',monospace;letter-spacing:1px;color:var(--muted)}.state-card .mono{display:block;margin-bottom:16px}.flow-arrow{color:#81936b;font-size:32px;text-align:center}.question-stack{display:grid;gap:10px}.question-card{display:flex;justify-content:space-between;align-items:center;gap:10px;border:1px solid #bfceb0;padding:18px;border-radius:6px;background:#f2f6e9}.question-card strong{font-size:13px}.question-card span{font-family:'Space Grotesk';font-size:15px}.question-card.highlight{border-color:#4f703c;background:#cfeba4}.reveal .question-card{animation:reveal .6s ease both}.reveal .question-card:nth-child(2){animation-delay:.08s}.reveal .question-card:nth-child(3){animation-delay:.16s}@keyframes reveal{from{opacity:.25;transform:translateX(-12px)}to{opacity:1;transform:translateX(0)}}.explain-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;margin-top:25px}.explain-card{border-top:1px solid var(--line);padding-top:18px}.explain-card p{font-size:13px;color:var(--muted)}.compare-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:13px;margin:22px 0}th,td{text-align:left;border-bottom:1px solid var(--line);padding:17px 14px;vertical-align:top}th{font-weight:600;color:var(--deep)}th:first-child,td:first-child{padding-left:0}td:nth-child(2),th:nth-child(2){background:#e8eedf}td{min-width:150px;color:#616b5e}td:first-child{min-width:115px;color:var(--ink)}.two-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:25px}.text-panel{padding:22px;border:1px solid var(--line);border-radius:8px}.text-panel p{font-size:13px;color:var(--muted);margin:0}.lab-input{background:#e8eddf;padding:20px;border:1px solid #d3dcc8;border-radius:8px;display:grid;grid-template-columns:1.35fr 1fr;gap:24px}label{font-size:12px;display:block;margin-bottom:8px}textarea{width:100%;min-height:106px;resize:vertical;border:1px solid #c9d4bd;border-radius:5px;padding:14px;background:#fbfcf7;font-size:14px;line-height:1.7}textarea:disabled{opacity:.7}.rules-list{font-size:12px;color:#5e6d53;display:grid;gap:6px;padding-top:25px}.lab-controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:18px 0}.status{font-size:11px;color:var(--muted);margin-right:auto}.status.ready{color:#416326}.results{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.result{border:1px solid var(--line);border-radius:8px;background:#f9faf6;overflow:hidden;min-width:0}.result.jevv{background:#e8f0dc;border-color:#c9d9b8}.result-head{padding:16px 14px;border-bottom:1px solid var(--line)}.result-head h3{font:600 17px 'Space Grotesk';margin:0 0 10px}.result select{width:100%;font-size:11px;border:1px solid var(--line);padding:6px;background:white;border-radius:3px}.model-id{font-size:10px;overflow-wrap:anywhere;color:var(--muted)}.result-body{padding:18px 14px;min-height:185px}.result-empty{font-size:12px;color:var(--muted);padding-top:22px;text-align:center}.value-row{display:flex;flex-direction:column;padding:6px 0}.value-row span{font-size:10px;color:var(--muted)}.value-row strong{font:500 18px 'Space Grotesk';overflow-wrap:anywhere}.run-meta{font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding-top:9px;margin-top:8px}.result details{font-size:11px;margin-top:12px}.result pre{max-height:250px;overflow:auto;white-space:pre-wrap;word-break:break-word;font-size:10px}.error{color:#a44731;font-size:12px}.summary-banner{background:#e5edda;padding:12px 16px;border-radius:5px;font-size:13px;margin-top:16px}.takeaway-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:30px}.takeaway-grid article{padding:28px;border:1px solid var(--line);border-radius:8px}.takeaway-grid article:first-child{background:var(--deep);color:#f1f8e9}.takeaway-grid h3{font-size:22px}.takeaway-grid p{font-size:14px;margin:12px 0}.big-question{font:400 clamp(25px,3vw,42px)/1.45 var(--serif);margin:36px 0 15px;color:var(--deep)}footer{height:65px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 36px;font-size:11px;color:var(--muted)}footer div{display:flex;align-items:center;gap:18px}footer button{border:0;font-size:20px;padding:4px 12px}footer span{letter-spacing:.5px}dialog{background:var(--paper);border:1px solid var(--line);border-radius:12px;max-width:760px;width:calc(100vw - 40px);max-height:85vh;padding:28px;color:var(--ink)}dialog::backdrop{background:#17231ccc;backdrop-filter:blur(4px)}.dialog-head{display:flex;align-items:center;justify-content:space-between}.dialog-head h2{font-size:25px}.source-item{border-top:1px solid var(--line);padding:16px 0}.source-item strong{font-size:14px;display:block}.source-item p{font-size:12px;color:var(--muted);margin:6px 0}.source-item a{font-size:12px}#toast{position:fixed;bottom:78px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:12px 20px;border-radius:8px;font-size:13px;display:none;z-index:99}.present aside{display:none}.present .layout{grid-template-columns:1fr}.present main{max-width:1450px;padding-top:38px}.present .edition,.present #footerNote{opacity:.45}.present .intro-grid{gap:80px}.present .decision-art{min-height:375px}body.present{font-size:17px}.present .lead{font-size:18px}.present td,.present .text-panel p{font-size:15px}.present .small{font-size:13px}[hidden]{display:none!important}@media(min-width:1700px){main{padding-top:65px}.decision-art{min-height:400px}.intro-grid{gap:75px}.stats{margin-top:50px}}@media(max-width:1100px){.edition{display:none}.layout{grid-template-columns:165px minmax(0,1fr)}aside{padding:30px 10px}main{padding:30px 26px}.intro-grid{gap:25px}.decision-art{padding:20px}.case-layout{grid-template-columns:1fr 200px}.results{grid-template-columns:repeat(2,1fr)}h1{font-size:43px}.stats{grid-template-columns:1fr 1fr}.stat-note{grid-column:1/-1}.source-line{flex-wrap:wrap}}@media(max-width:760px){header{padding:0 16px;height:auto;min-height:72px;flex-wrap:wrap;gap:10px;padding-top:12px;padding-bottom:12px}.brand{font-size:13px}.toolbar{gap:5px}.toolbar button{padding:6px 9px;font-size:11px}.layout{display:block}aside{border:0;padding:14px 15px}.rail-title,.rail-bottom{display:none}nav{flex-direction:row;overflow-x:auto;gap:3px}nav a{padding:8px 10px;white-space:nowrap;font-size:11px}nav a span{display:none}main{padding:22px 20px}.intro-grid,.case-layout,.mechanism,.explain-grid,.lab-input,.takeaway-grid,.two-cards{grid-template-columns:1fr}.decision-art{min-height:300px}.case-menu{flex-direction:row}.case-choice{padding:10px;flex:1}.case-choice .case-index{margin-bottom:8px}.case-choice strong{font-size:12px}.case-choice span{font-size:9px}.flow-arrow{transform:rotate(90deg)}.mechanism{gap:5px;padding:20px}.chapter-heading{display:block}.chapter-heading .tag{margin-top:10px}.results{grid-template-columns:1fr 1fr}.rules-list{padding-top:0}.lead{font-size:14px}.source-line{font-size:10px}footer{padding:0 18px}#footerNote{max-width:55%;font-size:9px}.present main{padding:24px 20px}.present .intro-grid{gap:25px}h1{font-size:43px}.tabs{flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
/* V2 — a light technical magazine, with diagrams and editorial depth. */
:root{--paper:#f7f6f2;--ink:#182b36;--muted:#65747b;--line:#d7deda;--deep:#244738;--green:#d7e9ba;--coral:#af573d}
body{background-image:linear-gradient(90deg,transparent 99.7%,#dde3df40 99.7%);background-size:80px 80px}
header{background:#fbfaf6;position:sticky;top:0;z-index:20;height:70px}.brand{font-weight:600}.edition{letter-spacing:1.6px}
.layout{grid-template-columns:196px minmax(0,1fr)}aside{background:#f0f1eaff;position:sticky;top:70px;height:calc(100vh - 70px)}main{max-width:1510px;padding:25px clamp(24px,3.4vw,60px) 55px}nav a{font-size:12px;padding:13px 10px}
.reading-bar{display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid var(--ink);padding-bottom:10px;margin-bottom:27px;font:10px 'Space Grotesk','Microsoft YaHei',sans-serif;letter-spacing:1px;color:var(--muted)}.reading-bar span:first-child{font-weight:700;color:var(--ink)}
h1{font-size:clamp(40px,4.2vw,66px)}h2{font-size:clamp(29px,2.8vw,44px)}.eyebrow{font-size:10px}.intro-grid{gap:34px}.decision-art{background:#e9eee3;border-radius:3px;min-height:335px}.art-input{border-radius:2px}.art-out div{border-radius:2px}.stats{padding:21px 0;margin-top:28px}.stat strong{font-size:44px}.stat-note{color:#586663}.tag{border-radius:3px}.primary,button{border-radius:3px}
.editorial-block{margin-top:46px;border-top:2px solid var(--ink);padding-top:24px}.section-heading{display:flex;align-items:baseline;gap:24px;margin-bottom:22px}.section-heading>span{font:10px 'Space Grotesk',monospace;letter-spacing:1.5px;color:var(--coral);min-width:150px}.section-heading h3{font-size:22px;line-height:1.45;margin:0;font-weight:500}.overview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.deep-panel{border:1px solid var(--line);background:#fdfdf9;padding:23px;min-width:0}.section-kicker{font:10px 'Space Grotesk',monospace;letter-spacing:1.1px;color:var(--muted);display:block;margin-bottom:18px}.deep-panel h3{font-size:18px;margin-bottom:12px}.deep-panel p,.deep-panel li{font-size:13px;line-height:1.9;color:#52626a}.deep-panel p:last-child{margin-bottom:0}.deep-panel ul{padding-left:18px;margin-bottom:0}.deep-panel a{font-size:11px;color:var(--deep)}.deep-panel small{font-size:10px;color:var(--muted)}
.chapter-map{display:grid;grid-template-columns:repeat(4,1fr);margin-top:23px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.chapter-map a{display:flex;align-items:center;gap:11px;padding:15px 12px;font-size:11px;text-decoration:none;border-right:1px solid var(--line)}.chapter-map a:last-child{border-right:0}.chapter-map b{font:12px 'Space Grotesk';color:var(--coral)}.chapter-map a span{margin-left:auto}.chapter-map a:hover{background:#e9eedf}
.pipeline{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);background:#eaf0e4;margin:22px 0}.pipeline>div{position:relative;padding:22px 28px;border-right:1px solid #c7d5c3}.pipeline>div:last-child{border:0}.pipeline>div:not(:last-child):after{content:'→';position:absolute;right:-12px;top:43px;background:#eaf0e4;width:24px;text-align:center;z-index:1;color:var(--deep)}.pipeline small{display:block;font:10px 'Space Grotesk';color:#677c5e;margin-bottom:12px}.pipeline strong{display:block;font-size:17px;font-weight:500}.pipeline p{font-size:12px;color:#596e59;margin:8px 0 0}
.training-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.training{border:1px solid var(--line);padding:23px;background:#f0f1ed;position:relative}.training>span{position:absolute;right:20px;font:11px 'Space Grotesk';color:var(--muted)}.training b{display:block;font:500 30px 'Space Grotesk';letter-spacing:-1px}.training h4{font-size:15px;font-weight:500;margin:17px 0 6px}.training p{font-size:12px;color:var(--muted);margin:0}.training.featured{background:#244738;color:#f3f7ec;border-color:#244738}.training.featured p,.training.featured>span{color:#cbdbbd}
.calibration-grid{display:grid;grid-template-columns:repeat(20,1fr);gap:4px;margin:20px 0 14px}.calibration-grid i{aspect-ratio:1;border:1px solid #cbd2cc;background:#f1f1ed}.calibration-grid i.hit{background:#577d61;border-color:#577d61}.calibration-label{display:flex;gap:16px;align-items:center;margin-bottom:16px}.calibration-label b{font:500 25px 'Space Grotesk'}.calibration-label span{font-size:10px;color:var(--muted)}.probability-bars{display:grid;gap:8px;margin:20px 0 14px}.probability-bars span{display:grid;grid-template-columns:15px 1fr 32px;align-items:center;gap:10px;font:11px 'Space Grotesk';color:#42674c}.probability-bars i{height:10px;background:linear-gradient(to right,#719775 var(--bar),#e8ece5 var(--bar));border-radius:0}.insight-strip{border-left:3px solid var(--coral);background:#efece3;padding:20px 24px;display:grid;grid-template-columns:190px 1fr;gap:20px;margin-top:23px}.insight-strip>b{font-size:15px;font-weight:500}.insight-strip p{font-size:13px;line-height:1.85;margin:0;color:#5f655f}.two-cards{gap:20px}.two-cards .deep-panel{height:100%}
.compare-wrap{border-top:1px solid var(--ink)}table{margin-top:0;font-size:12px}th,td{padding:14px 12px}thead{background:#efefe8}th{color:#263c34}td:nth-child(2),th:nth-child(2){background:#e5edde}.text-panel,.takeaway-grid article,.lab-input,.result,.mechanism{border-radius:3px}.case-choice,.video-wrap{border-radius:3px}.chapter-heading{margin-bottom:21px}.source-line{padding-top:8px}.present .reading-bar{font-size:11px}.present .deep-panel p,.present .deep-panel li{font-size:15px}.present .section-heading h3{font-size:26px}.present .editorial-block{margin-top:45px}.present .pipeline p{font-size:14px}.present .training p{font-size:14px}
@media(max-width:1100px){.layout{grid-template-columns:162px minmax(0,1fr)}.overview-grid{gap:12px}.deep-panel{padding:18px}.chapter-map{grid-template-columns:repeat(2,1fr)}.chapter-map a:nth-child(2){border-right:0}.section-heading{display:block}.section-heading h3{margin-top:8px}.pipeline>div{padding:20px}.insight-strip{grid-template-columns:140px 1fr}.intro-grid{gap:25px}.training{padding:18px}}
@media(max-width:760px){header{position:static;height:auto}.layout{display:block}aside{position:static;height:auto}main{padding:20px 18px 35px}.reading-bar{font-size:8px;gap:8px;flex-wrap:wrap;margin-bottom:22px}.reading-bar span:last-child{display:none}.overview-grid,.pipeline,.training-grid{grid-template-columns:1fr}.training-grid{gap:10px}.training{padding:20px}.training b{font-size:25px}.training h4{margin-top:8px}.pipeline>div{border-right:0;border-bottom:1px solid var(--line)}.pipeline>div:not(:last-child):after{content:'↓';top:auto;right:25px;bottom:-12px}.insight-strip{grid-template-columns:1fr;gap:10px;padding:20px}.section-heading h3{font-size:21px}.editorial-block{margin-top:32px}.chapter-map{grid-template-columns:1fr}.chapter-map a{border-right:0;border-bottom:1px solid var(--line)}.chapter-map a:last-child{border-bottom:0}.deep-panel h3{font-size:17px}.calibration-grid{gap:3px}.present .reading-bar{font-size:8px}.present .section-heading h3{font-size:21px}}
