@font-face{font-family:Field;src:url('field-sans.woff2') format('woff2');font-display:swap;font-weight:100 900}
:root{
  /* AIelsen brand anchors; quiet paper surfaces for long-form reading. */
  --navy:#001f3f;--ink:#1c3039;--teal:#007c83;--teal-text:#006f75;--mint:#a6d2c0;
  --paper:#fbfaf6;--surface:#fff;--wash:#f0f1eb;--soft:#e8eee7;
  --line:#d6ddd7;--edge:#b9c7bf;--muted:#586467;
  --on-dark:#f5f2e9;--on-dark-muted:#d0d7d1;--on-dark-dim:#b8c4be;
  --serif:Georgia,'Noto Serif SC','SimSun',serif;--sans:Field,'Noto Sans SC','Microsoft YaHei',sans-serif
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.85 var(--sans);-webkit-font-smoothing:antialiased}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}img{max-width:100%;display:block}figure,p,h1,h2,h3,h4,dl,dd{margin:0}h1,h2,h3,h4{line-height:1.35;font-weight:650}p+p{margin-top:14px}ul,ol{margin:0;padding:0;list-style:none}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #cf771c;outline-offset:5px}.wrap{width:min(1304px,calc(100% - 112px));margin:auto}.section{padding-top:112px;padding-bottom:112px}.eyebrow{font-size:12px;font-weight:650;letter-spacing:1.4px;line-height:1.5;text-transform:uppercase;color:var(--teal-text)}.eyebrow i{display:inline-block;width:7px;height:7px;background:var(--mint);border-radius:50%;margin-right:8px}.mint{color:var(--mint)}.skip{position:fixed;left:12px;top:8px;z-index:90;padding:9px 20px;background:var(--mint);transform:translateY(-160%)}.skip:focus{transform:none}
.topbar{height:78px;position:sticky;top:0;z-index:30;display:flex;justify-content:space-between;align-items:center;padding:0 56px;background:var(--paper);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:baseline;gap:12px;white-space:nowrap}.brand b{font-size:28px;letter-spacing:-1.1px}.brand span{font-size:11px;letter-spacing:1.6px;font-weight:650}.topbar nav{display:flex;gap:30px;font-size:13px;font-weight:600}.topbar nav a{padding:10px 0;border-bottom:2px solid transparent}.topbar nav a:hover,.topbar nav a.active{border-color:var(--teal-text);color:var(--teal-text)}
.hero{background:var(--navy);color:var(--on-dark);padding-top:34px;padding-bottom:34px;overflow:hidden}.hero-top{display:flex;justify-content:space-between;align-items:center}.hero .eyebrow{color:var(--mint)}.hero-edition{font-size:11px;color:var(--on-dark-dim);letter-spacing:1px}.hero-heading{display:grid;grid-template-columns:1.5fr .7fr;gap:64px;align-items:end;padding-top:54px;padding-bottom:58px}.hero-name{font-family:var(--serif);font-size:clamp(65px,7vw,102px);line-height:1;letter-spacing:-4px;margin-bottom:24px}.hero-name span{margin-left:25px;color:var(--mint);font-weight:400}.hero h1{font-size:clamp(26px,2.85vw,43px);line-height:1.6;letter-spacing:-1px}.hero h1 span{display:block}.hero-intro{max-width:390px;padding-bottom:10px;color:var(--on-dark);font-size:16px}.hero-intro p+p{font-size:14px;color:var(--on-dark-muted);line-height:1.95}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:34px;padding:13px 24px;font-size:14px;font-weight:650;border:1px solid transparent;transition:background .18s,color .18s,transform .18s}.button:hover{transform:translateY(-2px)}.mint-button{background:var(--mint);color:var(--navy)}.mint-button:hover{background:#bedfce}.hero-intro .button{margin-top:27px}.hero-visual{display:grid;grid-template-columns:1fr 1fr;gap:16px;position:relative}.hero-visual figure{min-width:0}.hero-visual img{width:100%;height:340px;object-fit:cover}.hero-visual figcaption{display:flex;align-items:center;gap:9px;font-size:12px;padding:14px 0;color:var(--on-dark-muted)}.hero-visual figcaption small{margin-left:auto;color:var(--on-dark-dim);font-size:9px;letter-spacing:1px}.zoom-link{display:block;position:relative;overflow:hidden;background:var(--soft)}.zoom-link img{transition:transform .6s cubic-bezier(.2,.65,.2,1)}.zoom-link:hover img{transform:scale(1.025)}.zoom-icon{position:absolute;bottom:14px;right:14px;background:var(--navy);color:var(--on-dark);width:34px;height:34px;border:1px solid #ffffff44;display:grid;place-items:center;font-size:20px;line-height:1}.label-dot{width:6px;height:6px;border-radius:50%;background:#d7af6e;display:inline-block}.label-dot.live{background:var(--mint)}.bridge-tag{position:absolute;left:50%;top:50%;transform:translate(-50%,-65%);background:var(--mint);color:var(--navy);padding:14px 17px;line-height:1.65;font-size:11px;box-shadow:0 4px 20px #001b3533}.hero-foot{border-top:1px solid #ffffff25;padding-top:23px;margin-top:10px;display:flex;justify-content:space-between;gap:50px}.hero-foot p{font-size:12px;color:var(--on-dark-muted);max-width:810px}.hero-foot strong{color:var(--on-dark);font-weight:550}.hero-foot>span{font-size:11px;white-space:nowrap;color:var(--on-dark-dim)}.hero-foot b{margin-left:14px;font-size:17px}
.section-head{display:grid;grid-template-columns:1.15fr .75fr;gap:80px;align-items:end;margin-bottom:50px}.section-head h2{font-size:clamp(28px,3vw,43px);letter-spacing:-1px;line-height:1.5;margin-top:18px}.section-lead{color:var(--muted);font-size:15px;line-height:2}.context-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;padding-top:26px}.context-grid article{border-top:1px solid var(--ink);padding-top:20px}.thin-number{font:italic 32px/1 var(--serif);color:var(--teal-text)}.context-grid h3{font-size:19px;margin:22px 0 15px}.context-grid p{font-size:14px;color:var(--muted)}.keyline{margin-top:46px;padding:23px 28px;border-left:3px solid var(--teal);background:var(--wash);display:flex;gap:42px;align-items:center}.keyline b{white-space:nowrap;font-size:14px}.keyline p{font-size:14px;color:var(--muted)}
.process-section{background:var(--wash);border-block:1px solid var(--line)}.route-map{display:grid;grid-template-columns:repeat(8,1fr);margin:4px 0 65px;border:1px solid var(--line);background:#fff}.route-map li+li{border-left:1px solid var(--line)}.route-map a{display:block;padding:20px 14px;font-size:12px;line-height:1.7}.route-map b{display:block;font-family:var(--serif);font-size:23px;color:var(--teal-text);margin-bottom:5px}.route-map a:hover{background:var(--soft)}.journey-layout{display:grid;grid-template-columns:270px 1fr;gap:70px}.journey-aside{position:sticky;top:118px;align-self:start}.journey-aside h3{font-size:27px;margin:20px 0;line-height:1.65}.journey-aside p{font-size:13px;color:var(--muted);line-height:2}.handoff-note{margin-top:28px;padding:21px;background:var(--navy);color:var(--on-dark)}.handoff-note span{display:block;font-size:11px;color:var(--on-dark-muted);margin-bottom:12px}.handoff-note b{display:block;font-size:13px;font-weight:500;line-height:2.5;border-top:1px solid #ffffff20}.stage{border-top:1px solid var(--edge);scroll-margin-top:102px}.stage:last-child{border-bottom:1px solid var(--edge)}.stage summary{display:grid;grid-template-columns:37px 1fr 25px;gap:18px;align-items:center;padding:26px 0;cursor:pointer;list-style:none}.stage summary::-webkit-details-marker{display:none}.step{align-self:start;font:italic 24px/1.4 var(--serif);color:var(--teal-text)}.stage summary h3{font-size:20px;line-height:1.55}.stage summary p{font-size:12px;color:var(--muted);margin-top:7px}.toggle{font-size:25px;font-weight:300;transition:transform .2s}.stage[open] .toggle{transform:rotate(45deg)}.stage-body{padding:0 0 30px 55px}.stage-body dl>div{display:grid;grid-template-columns:85px 1fr;gap:14px;padding:13px 0;border-top:1px solid var(--line);font-size:13px}.stage-body dt{font-weight:650;color:var(--teal-text)}.stage-body dd{color:var(--muted)}.stage-takeaway{font-size:12px;padding:16px 18px;background:var(--soft);border-left:2px solid var(--teal);margin-top:16px!important;color:#315a4e}
.strategy-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.working-board{background:var(--navy);color:var(--on-dark);padding:34px}.working-board .eyebrow{color:var(--mint)}.working-board h3{font-size:24px;margin:15px 0 26px}.ladder{counter-reset:rung}.ladder li{position:relative;border-top:1px solid #ffffff30;padding:18px 0 18px 42px;counter-increment:rung}.ladder li:before{content:counter(rung,decimal-leading-zero);position:absolute;left:0;top:22px;color:var(--mint);font:14px var(--serif)}.ladder b{display:block;font-size:15px;font-weight:600}.ladder span{font-size:12px;color:var(--on-dark-muted);display:block;margin-top:5px}.feedback-card{padding:32px;border:1px solid var(--line)}.feedback-card blockquote{font-size:24px;line-height:1.65;margin:25px 0;color:var(--ink);font-weight:600}.feedback-card .subtle{font-size:11px;color:var(--muted)}.feedback-card p{font-size:14px;color:var(--muted)}.feedback-card ul{font-size:13px;margin-top:18px}.feedback-card li{padding:11px 0;border-top:1px solid var(--line)}.feedback-card li b{color:var(--teal-text)}
.fab-area{margin-top:65px}.minor-head{display:flex;justify-content:space-between;gap:35px;align-items:end;margin-bottom:26px}.minor-head h3{font-size:27px}.minor-head p{max-width:540px;font-size:13px;color:var(--muted)}.tab-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.tab-list button{background:#fff;color:var(--ink);border:1px solid var(--edge);padding:10px 20px;font-size:13px;font-weight:600;min-height:44px}.tab-list button[aria-selected=true],.tab-list button:hover{background:var(--navy);border-color:var(--navy);color:#fff}[hidden]{display:none!important}.fab-panel{border:1px solid var(--line)}.fab-steps{display:grid;grid-template-columns:repeat(3,1fr)}.fab-steps>div{padding:26px;position:relative}.fab-steps>div+div{border-left:1px solid var(--line)}.fab-letter{font:italic 45px/1 var(--serif);color:var(--teal-text)}.fab-steps small{font-size:10px;letter-spacing:1px;margin-left:10px;color:var(--muted)}.fab-steps h4{margin:20px 0 12px;font-size:20px}.fab-steps p{font-size:13px;color:var(--muted)}.fab-proof{padding:19px 26px;background:var(--wash);font-size:13px;border-top:1px solid var(--line);display:flex;gap:22px}.fab-proof b{white-space:nowrap;color:var(--teal-text)}.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);margin-top:28px}.channel-grid article{padding:25px}.channel-grid article+article{border-left:1px solid var(--line)}.channel-grid small{font-size:10px;letter-spacing:1px;color:var(--teal-text)}.channel-grid h4{font-size:18px;margin:12px 0}.channel-grid p{font-size:12px;color:var(--muted)}
.photo-interlude{position:relative;height:290px;overflow:hidden;background:var(--navy)}.photo-interlude>img{width:100%;height:100%;object-fit:cover;object-position:center 65%;opacity:.6}.photo-interlude:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#001f3fea,transparent)}.photo-interlude .wrap{position:absolute;inset:0;z-index:1;display:flex;justify-content:space-between;align-items:center;color:#fff}.photo-interlude h2{font-size:34px;line-height:1.55}.photo-interlude .eyebrow{color:var(--mint);margin-bottom:20px}.photo-interlude p:last-child{font-size:12px;max-width:240px;color:var(--on-dark-muted);align-self:end;margin-bottom:32px}
.visual-section{background:var(--paper)}.pair-article{padding:42px 0 55px;border-top:1px solid var(--edge)}.pair-heading{display:grid;grid-template-columns:70px 1fr auto;align-items:center;gap:20px;margin-bottom:24px}.pair-num{font:italic 48px/1 var(--serif);color:var(--teal-text)}.pair-heading h3{font-size:26px;letter-spacing:-.5px}.pair-heading p{font-size:13px;color:var(--muted);margin-top:8px}.tag{font-size:10px;letter-spacing:.6px;line-height:1.5;border:1px solid var(--edge);color:#35695f;padding:7px 11px;white-space:nowrap;align-self:start}.pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.pair-grid figure{background:#fff;min-width:0;border:1px solid var(--line)}.pair-grid img{width:100%;height:335px;object-fit:cover}.pair-grid .contain img{object-fit:contain;background:var(--wash)}.pair-grid figcaption{padding:17px 20px;font-size:12px;line-height:1.75;display:grid;grid-template-columns:1fr auto;gap:8px}.pair-grid figcaption b{display:block;font-size:13px}.pair-grid figcaption span{font-size:10px;color:var(--teal-text)}.pair-grid figcaption p{font-size:11px;color:var(--muted)}.pair-reason{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:29px}.pair-reason h4{font-size:13px;color:var(--teal-text);margin-bottom:8px}.pair-reason p{font-size:13px;color:var(--muted)}.pair-foot{margin-top:24px;font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:15px}.detail-strip{margin-top:22px;display:grid;grid-template-columns:200px 1fr;gap:26px;align-items:center}.detail-strip img{height:100px;width:200px;object-fit:cover}.detail-strip p{font-size:12px;color:var(--muted)}.detail-strip b{display:block;font-size:14px;color:var(--ink);margin-bottom:5px}.visual-note{font-size:12px;line-height:1.9;padding:23px 25px;background:var(--soft);border-left:3px solid var(--teal)}
.copy-section{background:var(--wash);color:var(--ink);border-block:1px solid var(--line)}
.copy-section .eyebrow{color:var(--teal-text)}.copy-section .section-lead{color:var(--muted)}
.audit-map{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:var(--paper);margin-bottom:45px}
.audit-map div{padding:23px}.audit-map div+div{border-left:1px solid var(--line)}
.audit-map span{font-size:11px;color:var(--teal-text)}.audit-map h4{margin:9px 0;font-size:18px;color:var(--navy)}
.audit-map p{font-size:12px;color:var(--muted)}.copy-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}
.copy-card{border:1px solid var(--line);border-top:2px solid var(--navy);padding:30px;background:var(--surface)}
.copy-card .card-num{font:italic 20px var(--serif);color:var(--teal-text)}.copy-card h3{font-size:21px;margin:12px 0 22px;color:var(--navy)}
.copy-row{padding:14px 0;border-top:1px solid var(--line);font-size:13px;display:grid;grid-template-columns:57px 1fr;gap:16px}
.copy-row span{font-size:10px;letter-spacing:.3px;color:var(--muted)}.copy-row p{color:var(--muted)}
.copy-row.improved p{color:var(--ink);font-weight:600}
.copy-card .observed{font-size:12px;color:#315a4e;margin-top:18px;line-height:1.9;padding:14px 16px;background:var(--soft);border-left:2px solid var(--teal)}
.copy-card .proof-image{margin-top:20px;border:1px solid var(--line);background:var(--surface)}
.proof-image img{height:150px;width:100%;object-fit:contain;background:var(--surface)}
.proof-image a img{background:#121c1b}.proof-image figcaption{font-size:10px;color:var(--muted);padding:9px 12px}
.copy-fineprint{margin-top:25px;font-size:11px;color:var(--muted)}
.loop-board{display:grid;grid-template-columns:1fr 32px 1fr 32px 1fr;align-items:stretch;margin-bottom:40px}.loop-board article{padding:30px;background:var(--wash);border-top:2px solid var(--teal)}.loop-board>span{align-self:center;text-align:center;color:var(--teal-text);font-size:24px}.loop-board .eyebrow{font-size:10px}.loop-board h3{font-size:22px;margin:15px 0}.loop-board li{font-size:13px;padding:9px 0;border-top:1px solid var(--line)}.lesson-row{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:40px}.lesson-row article{padding-top:24px;border-top:1px solid var(--ink)}.lesson-row h3{font-size:18px;margin-bottom:13px}.lesson-row p{font-size:13px;color:var(--muted)}.responsibility{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:20px;margin-top:38px}.responsibility article{padding:28px;border:1px solid var(--line)}.responsibility article.agent{background:var(--navy);color:var(--on-dark);border:0}.responsibility h3{font-size:23px;margin:12px 0 17px}.responsibility p{font-size:13px;color:var(--muted)}.responsibility .agent .eyebrow{color:var(--mint)}.responsibility .agent p{color:var(--on-dark-muted)}.role-note{font-size:13px;color:var(--muted);margin-top:24px}.playbook-section{background:var(--soft)}.playbook-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:start}.playbook-title h2{font-size:38px;line-height:1.55;margin:18px 0 22px}.playbook-title>p{font-size:14px;color:var(--muted)}.playbook-title .button{background:var(--navy);color:var(--on-dark);margin-top:28px}.playbook-title .button:hover{background:#0a475e}.playbook-list{counter-reset:book}.playbook-list li{position:relative;counter-increment:book;padding:17px 0 17px 38px;border-top:1px solid var(--edge);font-size:13px}.playbook-list li:before{content:counter(book,decimal-leading-zero);position:absolute;left:0;top:20px;font:16px var(--serif);color:var(--teal-text)}.playbook-list b{font-size:15px;display:block;margin-bottom:4px}.playbook-list span{color:var(--muted)}.closing{padding:55px 0 0;margin-top:45px;border-top:1px solid var(--edge);display:grid;grid-template-columns:1fr 1fr;gap:60px}.closing blockquote{font-size:27px;line-height:1.7;margin:0;color:var(--navy);font-weight:600}.closing p{font-size:14px;color:var(--muted)}.text-link{display:inline-block;border-bottom:1px solid var(--teal);color:var(--teal-text);font-size:13px;font-weight:600;margin-top:22px;padding-bottom:4px}
.footer{background:var(--navy);color:var(--on-dark);padding:44px 0 35px}.footer-top{display:flex;justify-content:space-between;align-items:center;gap:30px;border-bottom:1px solid #ffffff28;padding-bottom:25px}.footer-top>a:last-child{font-size:12px;color:var(--mint)}.footer-bottom{padding-top:23px;display:grid;grid-template-columns:1.6fr 1fr;gap:90px}.footer-bottom p{font-size:10px;line-height:1.9;color:var(--on-dark-dim);margin:0}dialog{border:1px solid #49605a;padding:20px;background:var(--navy);color:var(--on-dark);max-width:calc(100vw - 40px);width:1300px;max-height:94dvh}dialog::backdrop{background:#001422eb}.lightbox-toolbar{display:flex;justify-content:space-between;gap:25px;align-items:center;margin-bottom:16px}.lightbox-toolbar p{font-size:13px;color:var(--on-dark)}.lightbox-toolbar button{background:#fff;color:var(--navy);border:0;padding:8px 17px;min-height:44px;white-space:nowrap;font-size:13px}.lightbox-toolbar button span{font-size:22px;margin-left:15px}.lightbox-hint{text-align:center;font-size:11px;color:var(--on-dark-dim);margin-top:12px!important}#lightbox-image{margin:auto;max-width:100%;max-height:calc(94dvh - 145px);width:auto;object-fit:contain}
.stage{scroll-margin-top:16px}#comparison-memory .pair-grid img{object-fit:contain;background:var(--wash)}
@media(min-width:1600px){.hero-visual img{height:380px}}
@media(max-width:1100px){.wrap{width:calc(100% - 64px)}.topbar{padding-inline:32px}.topbar nav{gap:20px}.hero-heading{gap:32px;grid-template-columns:1.25fr .8fr}.hero h1{font-size:31px}.hero-name{font-size:82px}.hero-visual img{height:285px}.section-head{gap:40px}.journey-layout{grid-template-columns:220px 1fr;gap:38px}.route-map a{padding:17px 10px;font-size:11px}.pair-grid img{height:265px}.section{padding-block:85px}.channel-grid article{padding:20px}.pair-heading h3{font-size:23px}}
@media(max-width:800px){.topbar{height:auto;min-height:76px;flex-wrap:wrap;padding:16px 24px 10px;gap:12px}.brand b{font-size:25px}.topbar nav{width:100%;justify-content:space-between;gap:10px;font-size:11px}.topbar nav a{padding:4px 0}.hero-heading{display:block;padding-top:36px}.hero-intro{margin-top:27px;max-width:570px}.hero-intro p{font-size:14px}.hero-name{font-size:76px}.hero h1{font-size:33px}.hero-visual img{height:240px}.hero-visual figcaption small{display:none}.hero-edition{display:none}.section-head{grid-template-columns:1fr;gap:24px}.section-head h2{font-size:32px}.section-head .section-lead{max-width:650px}.context-grid{gap:24px}.context-grid h3{font-size:17px}.keyline{display:block}.keyline p{margin-top:10px}.route-map{grid-template-columns:repeat(4,1fr)}.route-map li:nth-child(5){border-left:0}.route-map li:nth-child(n+5){border-top:1px solid var(--line)}.journey-layout{grid-template-columns:1fr}.journey-aside{position:static;display:none}.strategy-grid{grid-template-columns:1fr 1fr;gap:18px}.working-board,.feedback-card{padding:25px}.feedback-card blockquote{font-size:21px}.minor-head{display:block}.minor-head p{margin-top:14px}.channel-grid{grid-template-columns:repeat(2,1fr)}.channel-grid article:nth-child(3){border-left:0}.channel-grid article:nth-child(n+3){border-top:1px solid var(--line)}.pair-heading{grid-template-columns:50px 1fr;gap:15px}.pair-heading .tag{grid-column:2;width:max-content}.pair-grid img{height:220px}.pair-reason{gap:23px}.copy-card{padding:22px}.audit-map div{padding:17px}.audit-map h4{font-size:16px}.loop-board{grid-template-columns:1fr;gap:10px}.loop-board>span{transform:rotate(90deg)}.loop-board article{padding:25px}.responsibility{gap:14px}.responsibility article{padding:22px}.playbook-grid{gap:35px}.playbook-title h2{font-size:29px}.closing blockquote{font-size:24px}.footer-bottom{gap:40px}.photo-interlude h2{font-size:29px}}
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