:root{
  --bg:#F5F2EE;--bg2:#EDE8E1;--white:#fff;
  --ink:#1a1a1a;--ink2:#3d3d3d;--ink3:#6b6b6b;--ink4:#9b9b9b;
  --blue:#4a6b7a;--blue-d:#2c4a5c;--blue-l:rgba(74,107,122,.08);
  --rust:#a85c4a;--rust-l:rgba(168,92,74,.1);
  --green:#6b8f5c;--green-l:rgba(107,143,92,.1);
  --amber:#8c7a4a;--amber-l:rgba(140,122,74,.1);
  --line:#d8d0c4;--line2:#c5bdb1;
  --r:10px;--max:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:'Inter',sans-serif;font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
::selection{background:var(--blue);color:var(--white)}

.progress{position:fixed;top:0;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--blue),var(--rust));z-index:999;transition:width .08s linear}


nav{position:sticky;top:0;z-index:100;background:rgba(245,242,238,.88);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-in{max-width:var(--max);margin:0 auto;padding:0 32px;height:54px;display:flex;align-items:center;gap:24px}
.nav-brand{font-family:'Fraunces',serif;font-style:italic;font-weight:500;font-size:14px;color:var(--blue-d);text-decoration:none;flex-shrink:0}
.nav-pills{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;flex:1}
.nav-pills::-webkit-scrollbar{display:none}
.nav-pills a{font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:500;text-transform:uppercase;letter-spacing:.04em;color:var(--ink3);text-decoration:none;padding:6px 10px;border-radius:4px;transition:all .2s;white-space:nowrap}
.nav-pills a.active,.nav-pills a:hover{color:var(--blue-d);background:var(--blue-l)}
.nav-lang{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;color:var(--ink3);text-decoration:none;padding:4px 10px;border:1px solid var(--line);border-radius:4px;transition:all .2s;flex-shrink:0}
.nav-lang:hover{color:var(--blue-d);border-color:var(--blue);background:var(--blue-l)}


.rail{position:fixed;left:max(20px,calc((100vw - var(--max))/2 - 132px));top:50%;transform:translateY(-50%);z-index:90;width:118px}
.rail__line{position:absolute;left:5px;top:6px;bottom:6px;width:1px;background:var(--line)}
.rail__prog{position:absolute;left:5px;top:6px;width:1px;background:var(--blue);height:0;transition:height .3s ease}
.rail__item{position:relative;padding:9px 0 9px 22px;cursor:pointer;display:block;text-decoration:none}
.rail__dot{position:absolute;left:0;top:13px;width:11px;height:11px;border-radius:50%;background:var(--bg);border:1.5px solid var(--line2);transition:all .25s}
.rail__num{font-family:'JetBrains Mono',monospace;font-size:9px;color:var(--ink4);letter-spacing:.06em;display:block;margin-bottom:2px;transition:color .25s}
.rail__lab{font-size:11px;color:var(--ink3);line-height:1.3;font-weight:500;transition:color .25s}
.rail__item:hover .rail__dot{border-color:var(--blue)}
.rail__item:hover .rail__lab{color:var(--blue-d)}
.rail__item.active .rail__dot{background:var(--blue);border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-l)}
.rail__item.active .rail__num{color:var(--rust)}
.rail__item.active .rail__lab{color:var(--blue-d);font-weight:600}
@media(max-width:1320px){.rail{display:none}}


.hero{min-height:90vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:80px 32px 60px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-30%;left:-15%;width:680px;height:680px;border-radius:50%;background:radial-gradient(circle,rgba(74,107,122,.07) 0%,transparent 70%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-25%;right:-12%;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(168,92,74,.06) 0%,transparent 70%);pointer-events:none}
.hero-badge{font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--rust);background:var(--rust-l);padding:6px 16px;border-radius:20px;margin-bottom:30px;opacity:0;transform:translateY(16px);animation:fadeUp .6s .2s forwards}
.hero h1{font-family:'Fraunces',serif;font-size:clamp(34px,5.8vw,62px);font-weight:300;font-style:italic;letter-spacing:-.04em;line-height:1.1;color:var(--ink);max-width:900px;margin-bottom:24px;opacity:0;transform:translateY(20px);animation:fadeUp .8s .4s forwards}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero-sub{font-size:17px;color:var(--ink3);max-width:680px;line-height:1.8;margin-bottom:44px;opacity:0;transform:translateY(16px);animation:fadeUp .6s .6s forwards}
.hero-verdict{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:620px;width:100%;opacity:0;animation:fadeUp .7s .8s forwards}
.vd{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;text-align:left}
.vd--key{border-color:var(--blue);background:var(--blue-l)}
.vd__k{font-family:'JetBrains Mono',monospace;font-size:9.5px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--ink4);margin-bottom:14px}
.vd--key .vd__k{color:var(--blue-d)}
.vd__n{font-family:'Fraunces',serif;font-style:italic;font-size:32px;font-weight:400;line-height:1.05;color:var(--ink2)}
.vd--key .vd__n{color:var(--blue-d)}
.vd__d{font-size:12px;color:var(--ink3);margin-top:10px;line-height:1.5}
.hero-scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);opacity:0;animation:fadeUp .5s 1.2s forwards}
.hero-scroll span{display:block;width:20px;height:32px;border:2px solid var(--line2);border-radius:10px;position:relative}
.hero-scroll span::after{content:'';position:absolute;top:6px;left:50%;transform:translateX(-50%);width:3px;height:6px;background:var(--ink4);border-radius:2px;animation:scrollDot 1.8s infinite}


.container{display:grid;grid-template-columns:[full-start] minmax(24px,1fr) [wide-start] minmax(0,170px) [content-start] min(100% - 48px,700px) [content-end] minmax(0,170px) [wide-end] minmax(24px,1fr) [full-end]}
.container>*{grid-column:content}
.container>.wide{grid-column:wide}
.container>.full{grid-column:full}
.section{padding:76px 0}
.section--warm{background:var(--bg2)}

.sh{margin-bottom:36px}
.sh__tag{font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--rust);margin-bottom:10px}
.sh__title{font-family:'Fraunces',serif;font-size:clamp(26px,3.8vw,38px);font-weight:400;font-style:italic;letter-spacing:-.03em;line-height:1.2;color:var(--ink)}

.lead{font-size:18px;color:var(--ink2);line-height:1.75;margin-bottom:28px}
.lead b{color:var(--ink);font-weight:600}
.prose{font-size:16px;line-height:1.8;color:var(--ink2);margin-bottom:24px}
.prose p{margin-bottom:18px}
.prose strong{color:var(--ink);font-weight:600}
.prose code{font-family:'JetBrains Mono',monospace;font-size:.86em;background:var(--white);border:1px solid var(--line);padding:1px 5px;border-radius:3px;color:var(--blue-d)}


.callout{background:var(--white);border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:0 var(--r) var(--r) 0;padding:22px 26px;margin:32px 0}
.callout__k{font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--blue);margin-bottom:8px}
.callout p{font-size:14.5px;color:var(--ink2);line-height:1.7}
.callout p b{color:var(--ink)}


.mnote{display:block;font-size:12.5px;color:var(--ink3);line-height:1.6;background:var(--white);border:1px solid var(--line);border-radius:8px;padding:11px 13px;margin:14px 0}
.mnote b{color:var(--ink2);font-weight:600}
.mnote .src-tag{margin-right:4px}
@media(min-width:1240px){.mnote{float:right;clear:right;width:170px;margin:2px -170px 10px 18px}}


.fcards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:36px 0}
.fcard{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:24px 20px}
.fcard__n{font-family:'Fraunces',serif;font-size:34px;font-style:italic;font-weight:400;color:var(--blue-d);line-height:1.05;margin-bottom:8px}
.fcard__t{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.fcard__d{font-size:12.5px;color:var(--ink3);line-height:1.55}


.hbar{margin:36px 0}
.hbar-row{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.hbar-row__lab{width:150px;flex-shrink:0;font-size:13px;font-weight:500;color:var(--ink2);text-align:right}
.hbar-row__track{flex:1;height:24px;background:var(--bg2);border-radius:4px;overflow:hidden;position:relative}
.hbar-row__fill{height:100%;border-radius:4px;width:0;transition:width 1.2s cubic-bezier(.22,1,.36,1)}
.hbar-row__fill--blue{background:linear-gradient(90deg,var(--blue),var(--blue-d))}
.hbar-row__fill--rust{background:linear-gradient(90deg,var(--rust),#8a4636)}
.hbar-row__fill--green{background:linear-gradient(90deg,var(--green),#52753f)}
.hbar-row__val{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:600;color:var(--ink3);width:48px;text-align:right;flex-shrink:0}
.hbar-note{font-size:11px;color:var(--ink4);margin-top:8px;text-align:right}


.seg-bar{margin:36px 0}
.seg-bar__track{height:30px;border-radius:6px;overflow:hidden;display:flex;margin-bottom:12px}
.seg-bar__fill{height:100%;width:0;transition:width 1s ease;display:flex;align-items:center;justify-content:center;font-family:'JetBrains Mono',monospace;font-size:10px;color:#fff;font-weight:600}
.seg-bar__legend{display:flex;gap:18px;flex-wrap:wrap}
.seg-bar__leg{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--ink3)}
.seg-bar__dot{width:9px;height:9px;border-radius:2px}


.dist{margin:36px 0}
.dist-row{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.dist-row__label{width:110px;flex-shrink:0;font-size:13px;color:var(--ink2);text-align:right}
.dist-row__track{flex:1;height:20px;position:relative;background:var(--bg2);border-radius:4px}
.dist-row__iqr{position:absolute;top:3px;height:14px;background:var(--blue-l);border:1px solid var(--blue);border-radius:3px}
.dist-row__median{position:absolute;top:1px;width:2px;height:18px;background:var(--rust);border-radius:1px}
.dist-row__whisker{position:absolute;top:9px;height:2px;background:var(--ink4)}
.dist-note{font-size:11px;color:var(--ink4);margin-top:6px}


.quote-break{padding:72px 32px;text-align:center;position:relative;margin:0;overflow:hidden}
.quote-break--dark{background:var(--blue-d)}
.q-deco{position:absolute;font-family:'Fraunces',serif;font-size:160px;font-style:italic;color:rgba(255,255,255,.08);line-height:1;pointer-events:none}
.q-deco--l{top:18px;left:5%}
.q-deco--r{bottom:-30px;right:5%}
.quote-break blockquote{font-family:'Fraunces',serif;font-size:clamp(22px,3.2vw,32px);font-style:italic;font-weight:350;line-height:1.4;color:var(--white);max-width:820px;margin:0 auto;position:relative}
.quote-break cite{display:block;margin-top:20px;font-family:'JetBrains Mono',monospace;font-size:11px;font-style:normal;letter-spacing:.06em;color:rgba(255,255,255,.55)}


.source-box{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:24px 28px;margin:8px 0}
.source-box a{color:var(--blue);text-decoration:none;border-bottom:1px dashed var(--line);font-size:14px;transition:border-color .2s}
.source-box a:hover{border-color:var(--blue)}
.source-box p{font-size:12.5px;color:var(--ink3);margin-top:6px;line-height:1.6}
.src-tag{font-family:'JetBrains Mono',monospace;font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;padding:2px 7px;border-radius:4px;margin-right:6px;color:var(--green);background:var(--green-l)}


.source-figure{margin:36px 0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--white)}
.source-figure img{display:block;width:100%;height:auto}
.source-figure figcaption{padding:11px 18px;border-top:1px solid var(--line);font-size:12.5px;color:var(--ink3);line-height:1.6}
.source-figure figcaption a{color:var(--blue);text-decoration:none;border-bottom:1px dashed var(--line)}
.source-figure figcaption a:hover{border-color:var(--blue)}


.scrolly{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;margin:36px 0}
.scrolly__media{position:sticky;top:96px}
.scrolly__media .frame{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.scrolly [data-layer]{opacity:.22;transition:opacity .45s}
.scrolly [data-layer].active{opacity:1}
.scrolly__step{min-height:52vh;display:flex;flex-direction:column;justify-content:center;opacity:.3;transition:opacity .4s}
.scrolly__step.active{opacity:1}
.scrolly__step h4{font-family:'Fraunces',serif;font-size:19px;font-style:italic;font-weight:500;color:var(--ink);margin-bottom:8px}
.scrolly__step p{font-size:14.5px;color:var(--ink2);line-height:1.7}
@media(max-width:900px){.scrolly{grid-template-columns:1fr;gap:20px}.scrolly__media{position:static}.scrolly__step{min-height:0;padding:16px 0;opacity:1}.scrolly [data-layer]{opacity:1}}

footer{padding:28px 32px;text-align:center;font-size:12px;color:var(--ink4);border-top:1px solid var(--line)}


@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
@keyframes scrollDot{0%,100%{transform:translateX(-50%) translateY(0);opacity:0}30%,60%{opacity:1}100%{transform:translateX(-50%) translateY(10px);opacity:0}}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.1s}.reveal-d2{transition-delay:.2s}

@media(max-width:768px){
  .hero{min-height:84vh;padding:60px 20px 40px}
  .section{padding:56px 0}
  .nav-in{padding:0 16px;gap:12px}
  .hero-verdict{grid-template-columns:1fr}
  .fcards{grid-template-columns:1fr}
  .hbar-row{flex-direction:column;align-items:flex-start;gap:6px}
  .hbar-row__lab{width:auto;text-align:left}
  .dist-row{flex-direction:column;align-items:flex-start;gap:6px}
  .dist-row__label{width:auto;text-align:left}
}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-badge,.hero h1,.hero-sub,.hero-verdict,.hero-scroll{opacity:1;transform:none;animation:none}
}

/* Article-specific layer over template-a-magazine. */
:root{--blue:#375769;--blue-d:#243e4b;--rust:#a14f40;--max:1120px}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{overflow-wrap:break-word}
a{color:var(--blue-d)}
a:focus-visible,summary:focus-visible{outline:3px solid var(--rust);outline-offset:5px}
.skip-link{position:fixed;top:-90px;left:15px;z-index:1000;padding:12px;background:white}.skip-link:focus{top:12px}
.nav-in{max-width:1380px}.nav-pills a{font-size:10px;padding:7px 8px}.draft-tag{font-size:10px;letter-spacing:.08em;color:var(--rust);border-left:1px solid var(--line);padding-left:20px;white-space:nowrap}
.rail{left:max(14px,calc((100vw - 1160px)/2 - 140px));width:116px}.rail__item{padding-top:7px;padding-bottom:7px}.rail__dot{top:12px}
.hero{min-height:0;padding:94px 40px 84px;text-align:left;align-items:stretch;border-bottom:1px solid var(--line)}
.hero::before,.hero::after{display:none}.hero-inner{max-width:1140px;width:100%;margin:auto;display:grid;grid-template-columns:1.2fr 1fr;gap:76px;align-items:center}
.hero-copy{min-width:0}.hero-badge{display:inline-block;border-radius:0;background:none;padding:0;margin:0 0 25px;font-size:10px;opacity:1;animation:none;transform:none}
.hero h1{font-size:clamp(39px,4.2vw,62px);font-weight:400;letter-spacing:-.04em;line-height:1.14;margin:0 0 24px;opacity:1;animation:none;transform:none}
.hero h1>span,.hero h1>em{display:block}.hero h1 em{font-style:italic;color:var(--rust)}
.hero h1 small{display:block;font-family:'Inter',sans-serif;font-style:normal;font-size:18px;line-height:1.7;letter-spacing:0;font-weight:400;color:var(--ink2);margin-top:28px}
html[lang=zh-CN] .hero h1{font-style:normal;line-height:1.28;letter-spacing:.005em}html[lang=zh-CN] .hero h1 em{font-style:normal}html[lang=zh-CN] .sh__title{font-style:normal;letter-spacing:0;line-height:1.45}
.hero-sub{font-size:15px;line-height:1.85;max-width:450px;margin-bottom:24px;opacity:1;animation:none;transform:none}
.hero-meta{display:flex;gap:16px;flex-wrap:wrap;font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--ink3)}.hero-meta a{text-decoration:none;border-bottom:1px solid var(--line)}
.hero-graphic{position:relative;padding:26px 28px 20px;background:var(--bg2);border:1px solid var(--line);box-shadow:10px 12px 0 rgba(55,87,105,.04)}
.graphic-label,.graphic-baseline{font:10px 'JetBrains Mono',monospace;color:var(--ink3);letter-spacing:.08em;text-transform:uppercase}.graphic-label{margin-bottom:22px}.graphic-baseline{border-top:1px solid var(--line);padding-top:14px;margin-top:20px;text-align:right}
.hero-node{font-size:13px;text-align:center;padding:13px 10px;border:1px solid var(--line2);background:#faf8f4}.human{max-width:310px;margin:auto;border-color:var(--blue);color:var(--blue-d)}.orchestrator{max-width:230px;margin:auto;background:var(--blue-d);color:white;border-color:var(--blue-d)}
.graphic-connector{height:24px;width:1px;background:var(--blue);margin:auto;position:relative}.graphic-connector:after{content:'';position:absolute;bottom:0;left:-3px;width:7px;height:7px;border-right:1px solid var(--blue);border-bottom:1px solid var(--blue);transform:rotate(45deg)}
.graphic-branches{height:36px;display:grid;grid-template-columns:repeat(3,1fr);margin:0 16%}.graphic-branches i{border-top:1px solid var(--blue);margin-top:18px;position:relative}.graphic-branches i:after{content:'';position:absolute;width:1px;height:18px;background:var(--blue);left:50%}.graphic-branches i:first-child{margin-left:50%}.graphic-branches i:last-child{margin-right:50%}.graphic-branches i:first-child:after{left:0}.graphic-branches i:last-child:after{left:auto;right:0}.graphic-branches i:nth-child(2):before{content:'';position:absolute;width:1px;height:18px;top:-18px;left:50%;background:var(--blue)}
.hero-lanes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.hero-lanes>div{font-size:11px;text-align:center;background:white;border:1px solid var(--line2);padding:17px 5px}.memory-strip{font-size:11px;text-align:center;padding:14px 0;color:var(--rust)}.memory-strip span{font-size:20px;vertical-align:middle}.result{border-style:dashed;background:transparent;font-size:12px}
.section{padding:78px 0 62px;scroll-margin-top:0}.container{grid-template-columns:[full-start] minmax(24px,1fr) [wide-start] minmax(0,170px) [content-start] min(100% - 48px,700px) [content-end] minmax(0,170px) [wide-end] minmax(24px,1fr) [full-end]}
.sh{position:relative;padding-top:22px;border-top:1px solid var(--line2);margin-bottom:34px}.chapter-index{position:absolute;left:-76px;top:14px;font:italic 48px 'Fraunces',serif;color:#b9b0a4}.sh__title{font-size:32px;line-height:1.3;text-wrap:balance}.sh__tag{margin-bottom:12px}
.prose{font-size:16px;line-height:1.92;margin-bottom:18px}.prose p{margin-bottom:0}.subheading{font-size:18px;color:var(--ink);font-weight:600;line-height:1.55;margin:24px 0 20px;letter-spacing:-.01em}
.report-list{padding-left:28px;margin:15px 0 30px}.report-list li{padding:0 0 18px 8px}.report-list li::marker{font-family:'JetBrains Mono',monospace;color:var(--rust);font-size:12px}
.source-figure{margin:26px 0 38px;background:#faf9f6;border-radius:3px;box-shadow:0 4px 16px rgba(30,25,20,.025)}.source-figure img{width:100%;height:auto}.source-figure a.figure-image{display:block}.source-figure figcaption{font-size:11px;background:var(--white)}.figure-action{display:block;margin-top:4px;color:var(--ink3);font-size:10px}.src-tag{border-radius:2px}
.lens-cards{margin:8px 0 32px}.lens-cards .fcard{border-radius:2px;padding:25px;border-top:3px solid var(--blue)}.lens-cards .fcard__n{font-size:25px;font-style:normal}.lens-cards .fcard__d{font-size:12px}
.workflow{margin:22px 0 36px;padding:24px 26px 20px;background:var(--white);border:1px solid var(--line);border-radius:3px;position:relative}.workflow>figcaption,.key-panel>figcaption{font-size:13px;font-weight:600;color:var(--blue-d);margin-bottom:21px}.flow-nodes{list-style:none;display:flex;gap:21px;align-items:stretch;padding:0}.flow-nodes li{flex:1;min-width:0;position:relative;border-top:2px solid var(--blue);background:var(--blue-l);padding:14px 10px;font-size:12px;line-height:1.55}.flow-nodes li+li:before{content:'→';position:absolute;left:-18px;top:50%;font-size:14px;color:var(--ink4)}.flow-index{display:block;font:10px 'JetBrains Mono',monospace;color:var(--rust);margin-bottom:10px}.note{font-size:11px;line-height:1.7;color:var(--ink3);margin:14px 0 0}.loop-return{font-size:30px;line-height:1;text-align:center;margin-top:10px;color:var(--rust)}
.lifecycle .flow-nodes{gap:10px}.lifecycle .flow-nodes li{padding:12px 7px;font-size:11px}.lifecycle .flow-nodes li+li:before{left:-10px;font-size:10px}.lifecycle .flow-nodes li:last-child{border-top-color:var(--rust);background:var(--rust-l)}.return-paths{display:flex;gap:20px;margin-top:20px;padding-top:15px;border-top:1px dashed var(--line2);font-size:11px;color:var(--blue-d)}.return-paths>div{flex:1}.return-paths span{color:var(--rust);margin-right:5px;font-size:18px}
.key-panel{margin:20px 0 36px;padding:28px;background:var(--blue-d);color:white;box-shadow:8px 8px 0 var(--line);border-radius:2px}.key-panel>figcaption{color:#e8e3dc}.key-core{text-align:center;font:14px 'JetBrains Mono',monospace;padding:16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.3)}.key-uses{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}.key-uses>div{font-size:13px;line-height:1.6}.key-uses span{display:block;font-size:24px;color:#dcb099;margin-bottom:7px}.key-uses b{font-weight:500}.key-panel .note{color:#c2cfd6}
.evidence{border:1px solid var(--line2);margin:18px 0 34px;border-radius:3px;background:rgba(255,255,255,.5)}.evidence>summary{cursor:pointer;list-style:none;display:flex;gap:15px;justify-content:space-between;align-items:center;padding:18px 22px;font-size:13px;font-weight:600;color:var(--blue-d)}.evidence>summary::-webkit-details-marker{display:none}.evidence-toggle{font-size:10px;font-weight:400;color:var(--ink3);display:flex;gap:14px;align-items:center}.evidence-toggle b{font:20px 'Inter',sans-serif;color:var(--rust)}.evidence[open] .evidence-toggle b{transform:rotate(45deg)}.evidence[open]>summary{border-bottom:1px solid var(--line)}.evidence-body{padding:2px 22px 0}.evidence .source-figure{margin:20px 0 24px}.evidence-body>.note{margin-top:15px}
.quote-break{margin:22px 0 35px;border-radius:3px;padding:44px}.quote-break blockquote{font-size:27px;line-height:1.55;max-width:900px}.quote-break figcaption{color:#c3cbd0;margin-top:18px;font:11px 'JetBrains Mono',monospace}
.source-box{border-radius:2px;padding:17px 20px;font-size:13px}.source-box a{font-size:13px}.lead{font-size:16px}.article-footer a{display:inline-block;margin-top:10px;text-decoration:none}
@media(min-width:1600px){.hero-inner{max-width:1160px;gap:100px}.hero{padding-top:105px;padding-bottom:95px}.hero h1{font-size:65px}}
@media(max-width:1100px){.hero-inner{gap:40px}.hero{padding:64px 32px}.chapter-index{position:static;display:block;font-size:30px;margin-bottom:12px}.draft-tag{display:none}}
@media(max-width:760px){.hero{padding:46px 24px 42px}.hero-inner{grid-template-columns:1fr;gap:35px}.hero h1{font-size:43px}.hero h1 small{font-size:16px;margin-top:20px}.hero-sub{font-size:14px;margin-bottom:16px}.hero-graphic{padding:22px 20px 18px}.hero-badge{margin-bottom:17px}.nav-in{gap:12px}.nav-pills{max-width:calc(100vw - 230px)}.nav-pills a{font-size:9px}.nav-brand{font-size:12px}.nav-lang{font-size:10px;padding:3px 7px}.section{padding:44px 0 32px}.sh__title{font-size:27px}.prose{font-size:15px;line-height:1.9}.subheading{font-size:17px}.sh{margin-bottom:25px}.lens-cards{gap:9px;grid-template-columns:repeat(3,1fr)}.lens-cards .fcard{padding:15px 10px}.lens-cards .fcard__n{font-size:20px}.lens-cards .fcard__d{font-size:10px}.workflow{padding:20px 16px}.flow-nodes{flex-direction:column;gap:15px}.flow-nodes li{display:flex;gap:12px;align-items:center;padding:12px}.flow-index{margin-bottom:0}.flow-nodes li+li:before{content:'↓';left:calc(50% - 4px);top:-17px;font-size:12px}.lifecycle .flow-nodes{flex-direction:row;flex-wrap:wrap;gap:9px}.lifecycle .flow-nodes li{flex:0 0 calc(33.333% - 6px);font-size:11px;display:block;min-height:80px}.lifecycle .flow-index{margin-bottom:7px}.lifecycle .flow-nodes li+li:before{display:none}.return-paths{flex-direction:column;gap:7px}.key-panel{padding:22px 18px;box-shadow:5px 5px 0 var(--line)}.key-uses{gap:12px}.key-uses>div{font-size:11px}.evidence>summary{padding:15px;gap:10px}.evidence-toggle{max-width:105px;font-size:9px}.evidence-body{padding:0 10px}.quote-break{padding:28px 22px}.quote-break blockquote{font-size:23px}.source-figure figcaption{padding:10px 12px}.source-box{padding:15px}.hero-meta{gap:10px;font-size:9px}}
@media print{nav,.rail,.skip-link,.draft-tag{display:none}.hero{padding:25px 0}.section{padding:30px 0}.hero-inner{gap:30px}.hero h1{font-size:35px}.container{display:block;max-width:760px;margin:auto}.evidence{break-inside:avoid}.source-figure{break-inside:avoid}.article-footer{color:#555}.hero-graphic{box-shadow:none}}
@media(max-width:760px){.hero-lanes{gap:5px}.hero-lanes>div{padding:17px 3px;font-size:10px}.fcard__d{text-wrap:balance}.key-uses b{display:block;text-wrap:balance}}

/* Mechanism-focused diagrams, aligned with existing technical Playbooks. */
.visual-v2{--bg:#f4f1e9;--bg2:#efebe2;--ink:#27231e;--ink2:#4b443a;--ink3:#85796c;--blue:#54788b;--blue-d:#2e4c5c;--rust:#af5744;--line:#d6cec0}
.visual-v2 .hero{padding:72px 36px 64px;background:var(--bg)}
.visual-v2 .hero-inner{max-width:1260px;grid-template-columns:.8fr 1.3fr;gap:54px}
.visual-v2 .hero h1{font-size:58px}.visual-v2 .hero h1 small{font-size:17px}
.hero-visual{border:1px solid var(--line);border-radius:7px;overflow:hidden;box-shadow:0 8px 22px rgba(55,45,25,.035)}
.hero-visual svg{display:block;width:100%;min-width:0;height:auto}.hero-visual .diagram-compact{display:none}
.mechanism{margin:27px 0 42px;border:1px solid var(--line);border-radius:8px;background:#fffdf8;overflow:hidden;box-shadow:0 5px 18px rgba(44,35,18,.025)}
.mechanism-head{display:flex;align-items:flex-start;gap:17px;padding:19px 25px 16px;border-bottom:1px solid #e0dacd;background:#fbf9f3}
.mechanism-no{font:italic 31px 'Fraunces',serif;color:var(--blue);line-height:1.2;min-width:40px}
.mechanism-tag{display:block;font:10px 'JetBrains Mono',monospace;letter-spacing:.06em;color:var(--rust);margin-bottom:5px}
.mechanism-head h3{font-size:16px;line-height:1.55;font-weight:600;color:var(--ink);text-wrap:balance;margin:0}
.mechanism-svg{display:block;width:100%;height:auto;min-width:850px}.diagram-scroll{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-color:#b8ae9f #f1ede3;scrollbar-width:thin}
.diagram-scroll:focus-visible{outline:2px solid var(--blue);outline-offset:-3px}
.mechanism>figcaption{padding:13px 25px 16px;border-top:1px solid #e5dfd3;font-size:12px;line-height:1.75;color:#7d7163;background:#fbf9f3}
.mechanism>figcaption a{color:var(--blue);white-space:nowrap;text-decoration:none;border-bottom:1px dotted var(--blue)}
.diagram-mobile-hint{display:none}
.visual-v2 .evidence{margin:14px 0 35px;border-color:#d9d2c6;background:transparent}
.visual-v2 .evidence>summary{font-weight:400;color:#817769;font-size:12px;padding:15px 20px}
.visual-v2 .evidence-toggle{font-size:9px;color:#a39787}.visual-v2 .evidence-body{background:#f6f3ed}
.visual-v2 .section{padding-top:72px}.visual-v2 .sh__title{font-weight:600;font-size:31px}.visual-v2 .chapter-index{font-size:46px;color:#beb3a2}
.visual-v2 .prose{line-height:1.9}.visual-v2 .subheading{margin-top:27px}
@media(min-width:1600px){.visual-v2 .hero{padding:86px 36px 76px}.visual-v2 .hero h1{font-size:62px}}
@media(max-width:1100px){.visual-v2 .hero-inner{gap:30px;grid-template-columns:.8fr 1.15fr}.visual-v2 .hero h1{font-size:45px}.visual-v2 .hero h1 small{font-size:15px}}
@media(max-width:760px){
 .visual-v2 .hero{padding:40px 24px 42px}.visual-v2 .hero-inner{grid-template-columns:1fr;gap:26px}.visual-v2 .hero h1{font-size:42px}.visual-v2 .hero h1 small{font-size:16px}
 .hero-visual .diagram-desktop{display:none}.hero-visual .diagram-compact{display:block}
 .mechanism{margin:20px 0 29px}.mechanism-head{padding:15px 16px;gap:10px}.mechanism-no{font-size:26px;min-width:30px}.mechanism-head h3{font-size:14px}.mechanism-tag{font-size:9px}
 .mechanism-svg{width:1000px;min-width:1000px}.mechanism>figcaption{padding:12px 15px;font-size:11px}
 .diagram-mobile-hint{display:block;padding:9px 15px;background:#f1ede3;color:#887b6b;font-size:10px;border-top:1px solid #e1d9c9}
 .visual-v2 .section{padding-top:44px}.visual-v2 .sh__title{font-size:26px}
}
@media print{.diagram-scroll{overflow:visible}.mechanism-svg{min-width:0;width:100%}.diagram-mobile-hint{display:none}.mechanism{break-inside:avoid}.hero-visual .diagram-desktop{display:block}.hero-visual .diagram-compact{display:none}}