:root{--navy:#102a3b;--deep:#0b1e2c;--teal:#176e69;--mint:#77d6c8;--ink:#203848;--muted:#566b77;--paper:#f5f7f6;--line:#d5e0e2;--pale:#eaf2ef;--amber:#82560c}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.9 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif}h1,h2,h3,p,figure{margin:0}h1,h2,h3{color:var(--navy);line-height:1.5}p{margin-bottom:22px}a{color:var(--teal);text-underline-offset:4px}button{font:inherit;cursor:pointer}strong{font-weight:650}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex="0"]:focus-visible{outline:3px solid #2b958c;outline-offset:4px}.shell{max-width:1160px;margin:auto}.skip{position:absolute;top:-100px;left:20px;z-index:40}.skip:focus{top:16px;background:white;padding:12px}.reading-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:20;pointer-events:none}.reading-progress span{display:block;width:0;height:100%;background:var(--mint)}.hero{background:var(--navy);color:#d4e2e7;border-bottom:3px solid var(--mint)}.hero .shell{padding:28px 0 48px}.hero-context{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:34px}.crumb{font-size:13px;color:#bacdd4}.crumb>span{margin:0 12px;color:#809ba7}.preview-tag{font-size:10px;color:#b7cbd3;border:1px solid #46616d;border-radius:3px;padding:3px 8px;white-space:nowrap}.hero-grid{display:grid;grid-template-columns:minmax(0,755px) 300px;gap:70px;align-items:center}.eyebrow{font-size:11px;letter-spacing:1.6px;font-weight:650;color:var(--teal)}.hero .eyebrow{color:var(--mint)}h1{font-size:46px;letter-spacing:-.7px;color:white;margin:18px 0 22px;line-height:1.4}h1 span{display:block;text-wrap:balance}h1 .title-sub{font-size:30px;letter-spacing:0;color:var(--mint);margin-top:10px}.hero-intro{font-size:18px;line-height:1.9;max-width:720px}.meta{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:12px;color:#b7cbd3;margin:22px 0}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.hero-actions a{padding:10px 18px;border:1px solid #71959f;color:white;font-size:14px;text-decoration:none;border-radius:4px;font-weight:600}.hero-actions .primary{background:var(--mint);border-color:var(--mint);color:var(--deep)}.hero-actions a span{margin-left:24px}.hero-aside{border-top:2px solid var(--mint);padding-top:22px}.hero-statement{font-size:28px;line-height:1.7;color:white;margin:20px 0 26px;font-weight:600}.hero-statement span{display:block}.hero-statement .accent{color:var(--mint)}.hero-points{border-top:1px solid #436370;padding-top:18px;display:grid;gap:8px;font-size:13px;color:#b7cbd3}.hero-points i{font:11px/2 ui-monospace,monospace;margin-right:14px;font-style:normal}.series-strip{background:#edf2f0;border-bottom:1px solid var(--line);font-size:12px}.series-strip .shell{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:15px 0}.series-strip>div>span{color:var(--muted)}.series-strip nav{display:flex;gap:24px}.series-strip a{color:var(--muted);text-decoration:none}.series-strip a[aria-current]{color:var(--teal);font-weight:650}.reading-layout{max-width:1160px;margin:auto;padding:56px 0 60px;display:grid;grid-template-columns:212px minmax(0,780px);justify-content:space-between;gap:60px}.toc-aside{position:sticky;top:28px;align-self:start;max-height:calc(100dvh - 55px);overflow-y:auto;padding-right:4px;scrollbar-width:thin}.toc-label{font-size:10px;color:var(--muted);letter-spacing:1.4px;margin-bottom:20px}.toc-label span{display:block;font-size:14px;color:var(--navy);letter-spacing:0;margin-top:5px}.toc a{display:flex;gap:12px;text-decoration:none;color:var(--muted);font-size:13px;padding:9px 11px;border-left:2px solid var(--line);line-height:1.7}.toc a>span{font:11px/2 ui-monospace,monospace;color:#647c86;flex:0 0 19px}.toc a>b{font-weight:400}.toc a[aria-current]{background:#e8efec;color:var(--teal);border-color:var(--teal)}.toc a[aria-current]>b{font-weight:650}.reader-note{border-top:1px solid var(--line);padding-top:18px;margin-top:24px;font-size:12px}.reader-note p{font-size:12px;color:var(--muted);margin:7px 0 0}.article{min-width:0}.article>section{scroll-margin-top:28px;margin-bottom:64px}.article>section:focus{outline:none}.section-head{display:flex;gap:24px;margin-bottom:28px}.section-head h2{font-size:28px;text-wrap:pretty}.section-head p{font-size:10px;color:var(--muted);letter-spacing:1px;margin:7px 0 0}.section-number{font:14px/1.8 ui-monospace,monospace;flex:0 0 32px;color:var(--teal);border-top:2px solid #77ada4;padding-top:9px;margin-top:8px}.article>section>p:first-of-type{font-size:19px;color:var(--navy);line-height:1.8}.article ul,.article ol{padding-left:23px;margin:24px 0}.article li{padding-left:5px;margin:10px 0}.article li>p{margin:0}.article p>a{font-size:.88em;overflow-wrap:anywhere}.takeaway{background:white;border:1px solid var(--line);border-top:3px solid var(--teal);padding:30px 32px}.takeaway h2{font-size:26px;margin:12px 0 24px}.takeaway ul{list-style:none;counter-reset:brief;padding:0;margin:0}.takeaway li{counter-increment:brief;padding:19px 0 19px 36px;position:relative;border-top:1px solid var(--line);font-size:15px;line-height:1.9;margin:0;color:var(--muted)}.takeaway li:first-child{border-top:0;padding-top:0}.takeaway li:last-child{padding-bottom:0}.takeaway li:before{content:'0' counter(brief);position:absolute;left:0;font:12px/2 ui-monospace,monospace;color:var(--teal)}.takeaway strong{color:var(--navy)}.table-wrap{overflow-x:auto;margin:28px 0;border:1px solid var(--line);background:white;border-radius:4px;overscroll-behavior-x:contain}table{border-collapse:collapse;width:100%;min-width:640px;text-align:left;font-size:14px;line-height:1.85}caption{text-align:left;font-size:12px;font-weight:600;color:var(--muted);padding:14px 18px;background:#edf2f0}th,td{border-top:1px solid var(--line);padding:18px;vertical-align:top}thead{background:var(--navy);color:white;font-size:12px}thead th{font-weight:500;border-top:0}tbody th{width:24%;font-weight:650;color:var(--navy)}td{color:var(--muted)}th[align="right"],td[align="right"]{font-variant-numeric:tabular-nums;white-space:nowrap}.assumptions-table table{min-width:0;table-layout:fixed}.assumptions-table tbody th{width:60%}.assumptions-table td{color:var(--teal);font-variant-numeric:tabular-nums}.section-calculation>p:first-of-type{border-left:3px solid #b49352;background:#fcf6e9;color:var(--amber);font-size:15px;padding:20px 24px}.section-calculation>ul{list-style:none;padding:22px 26px;background:white;border:1px solid var(--line);border-left:3px solid var(--teal);font-size:15px}.section-calculation>ul strong{color:var(--teal);font-size:18px}.flow-figure{background:white;border:1px solid var(--line);border-radius:5px;margin:28px 0;padding:28px 30px}.flow-figure img{display:block;width:min(100%,390px);height:auto;margin:auto}.flow-figure figcaption{font-size:12px;line-height:1.8;color:var(--muted);margin-top:24px;padding-top:18px;border-top:1px solid var(--line)}.faq{background:white;border:1px solid var(--line);border-radius:4px;margin:12px 0}.faq summary{cursor:pointer;font-size:16px;font-weight:600;padding:18px 22px;color:var(--navy)}.faq>div{padding:0 22px 20px;font-size:15px;color:var(--muted)}.faq p{margin:0}.section-perspective{background:var(--navy);color:#d4e2e7;padding:30px 32px;border-radius:5px}.section-perspective .section-head h2{color:white;font-size:25px}.section-perspective .section-head p{color:var(--mint)}.section-perspective .section-number{color:var(--mint)}.article>.section-perspective>p:first-of-type{color:#d4e2e7;font-size:17px}.section-perspective>p:last-child{margin-bottom:0}.section-sources ol{list-style:none;counter-reset:source;padding:0;margin:0}.section-sources li{position:relative;counter-increment:source;border-top:1px solid var(--line);padding:18px 0 18px 34px;font-size:13px;color:var(--muted);margin:0;overflow-wrap:anywhere}.section-sources li:before{content:'[' counter(source) ']';position:absolute;left:0;color:var(--teal);font:12px/2 ui-monospace,monospace}.section-sources li a{font-weight:600}.article>.section-sources>p:last-child{font-size:13px;color:var(--muted);background:var(--pale);padding:20px 24px;margin-top:24px}.section-related ul{list-style:none;padding:0}.section-related li{border-top:1px solid var(--line);margin:0;padding:20px 0;font-size:15px}.section-related a{font-weight:600;text-decoration:none}.author{display:flex;gap:20px;align-items:center;padding:28px 0;border-top:1px solid var(--line);margin-top:36px}.author-badge{flex:0 0 58px;height:58px;border-radius:50%;background:var(--navy);color:var(--mint);text-align:center;font:21px/58px ui-monospace,monospace}.author p{font-size:12px;color:var(--muted);margin:5px 0}.author a{font-size:12px}.footer{background:var(--deep);color:#abc1ca;font-size:12px;padding:30px 24px}.footer .shell{display:flex;justify-content:space-between;gap:20px}.footer strong{color:#d4e2e7}.floating{position:fixed;right:20px;bottom:calc(20px + env(safe-area-inset-bottom));z-index:10;display:flex;gap:10px}.floating a,.floating button{padding:10px 16px;min-height:46px;background:var(--navy);border:1px solid #446778;border-radius:5px;font-size:13px;color:white;text-decoration:none;display:flex;align-items:center;gap:8px}.floating #toc-open[hidden]{display:none}.inline-toc{display:none}dialog{border:0;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#0b1e2cb3}.toc-dialog{position:fixed;inset:auto 0 0;margin:0 auto;width:100%;max-width:650px;max-height:78dvh;border-radius:14px 14px 0 0;padding:24px 24px calc(24px + env(safe-area-inset-bottom));overflow:hidden}.toc-dialog[open]{display:flex;flex-direction:column}.toc-dialog header{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-shrink:0}.toc-dialog h2{font-size:21px;margin:6px 0 0}.toc-dialog header button{background:white;border:1px solid var(--line);border-radius:4px;padding:7px 12px;font-size:14px;min-height:44px;white-space:nowrap}.toc-dialog header button span{margin-left:8px}.toc-dialog .current-position{font-size:12px;color:var(--muted);margin:16px 0;flex-shrink:0}.toc-dialog nav{overflow:auto;overscroll-behavior:contain;min-height:0}.toc-dialog .toc a{font-size:14px;padding:12px;min-height:47px}.toc-dialog .toc a[aria-current]{border-color:var(--teal)}
@media(max-width:1240px){.shell{margin-left:32px;margin-right:32px}.hero-grid{gap:44px;grid-template-columns:minmax(0,1fr) 280px}.reading-layout{margin:0 32px;gap:48px;grid-template-columns:190px minmax(0,780px)}h1{font-size:42px}}
@media(max-width:1000px){.hero-grid{grid-template-columns:minmax(0,1fr) 230px;gap:28px}h1{font-size:37px}h1 .title-sub{font-size:26px}.hero-statement{font-size:25px}.reading-layout{gap:34px;grid-template-columns:170px minmax(0,1fr)}}
@media(max-width:860px){.hero-grid{display:block}.hero-aside{display:none}.hero .shell{padding-bottom:38px}.hero h1{font-size:42px}.hero h1 .title-sub{font-size:28px}.toc-aside{display:none}.reading-layout{display:block;max-width:780px;margin:auto;padding:40px 24px 64px}.inline-toc{display:block;border:1px solid var(--line);padding:14px 18px;background:white;margin-bottom:28px}.inline-toc summary{font-size:14px;font-weight:600;cursor:pointer}.inline-toc nav{margin-top:12px}.enhanced-toc .inline-toc{display:none}.footer{padding-bottom:110px}.preview-tag{font-size:9px}.hero-context{align-items:flex-start}.series-strip .shell{flex-wrap:wrap;gap:8px}.series-strip nav{gap:24px}.flow-figure img{width:min(100%,360px)}}
@media(max-width:600px){body{font-size:16px}.shell{margin-left:24px;margin-right:24px}.hero .shell{padding:22px 0 34px}.hero-context{display:block;margin-bottom:26px}.crumb{font-size:11px}.preview-tag{display:inline-block;margin-top:12px}.hero h1{font-size:34px;letter-spacing:-.4px;margin-top:17px}.hero h1 .title-sub{font-size:24px;line-height:1.6}.hero-intro{font-size:16px}.eyebrow{font-size:10px;letter-spacing:1.2px}.meta{font-size:11px;gap:5px 14px}.hero-actions a{padding:10px 14px;font-size:12px;min-height:46px;display:flex;align-items:center}.hero-actions a span{margin-left:12px}.series-strip{font-size:11px}.series-strip .shell{padding:12px 0;gap:8px 20px}.series-strip nav{gap:20px}.reading-layout{padding:32px 20px 45px}.article>section{margin-bottom:48px}.takeaway{padding:24px 22px}.takeaway h2{font-size:24px}.takeaway li{font-size:14px;padding-left:31px}.section-head{gap:14px;margin-bottom:24px}.section-head h2{font-size:24px}.section-head p{font-size:9px;letter-spacing:.6px}.section-number{flex-basis:26px;font-size:12px}.article>section>p:first-of-type{font-size:18px}.table-wrap{margin:24px 0}.flow-figure{padding:20px 12px}.flow-figure figcaption{font-size:11px;padding:16px 6px 0}.section-calculation>p:first-of-type{padding:18px 20px;font-size:14px}.section-calculation>ul{padding:18px 20px;font-size:14px}.section-calculation>ul strong{font-size:16px}.faq summary{font-size:15px;padding:17px 18px}.faq>div{padding:0 18px 20px;font-size:14px}.section-perspective{padding:25px 23px}.section-perspective .section-head h2{font-size:23px}.article>.section-perspective>p:first-of-type{font-size:16px}.section-sources li{font-size:12px;padding-left:30px}.article>.section-sources>p:last-child{font-size:12px;padding:18px 20px}.section-related li{font-size:14px}.author{gap:15px}.author p{font-size:11px}.footer .shell{display:block;margin:0}.footer span{display:block;margin-top:8px;font-size:11px}.floating{right:16px;bottom:calc(16px + env(safe-area-inset-bottom))}.floating a,.floating button{padding:10px 14px;font-size:12px}.toc-dialog{padding:22px 20px calc(22px + env(safe-area-inset-bottom))}.toc-dialog .toc a{font-size:13px}}
@media(max-width:360px){.shell{margin-left:20px;margin-right:20px}.hero h1{font-size:30px}.hero h1 .title-sub{font-size:22px}.hero-actions{gap:8px}.hero-actions a{font-size:11px;padding:10px 11px}.reading-layout{padding-left:16px;padding-right:16px}.takeaway{padding:22px 18px}.series-strip nav{gap:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.charts{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:30px 0}.data-chart{background:white;border:1px solid var(--line);padding:24px 20px;min-width:0}.data-chart h3{font-size:19px}.chart-sub,.caption{font-size:12px!important;color:var(--muted)!important;margin:8px 0 24px!important}.bar-row{display:grid;grid-template-columns:40px minmax(0,1fr) 35px;gap:8px;align-items:center;font-size:12px;margin:16px 0}.track{height:18px;background:#edf2f0}.track i{display:block;height:100%;width:var(--size);background:var(--teal)}.bar-row strong{text-align:right;font-variant-numeric:tabular-nums}.axis{margin:0 43px 0 48px;display:flex;justify-content:space-between;border-top:1px solid var(--line);font-size:10px;color:var(--muted);padding-top:6px;white-space:nowrap}.data-chart figcaption{font-size:11px;line-height:1.7;color:var(--muted);margin-top:24px}.note{border-left:3px solid var(--teal);background:#eaf2ef;padding:20px 24px;font-size:14px;margin:24px 0}.fuel-row{display:grid;grid-template-columns:130px 1fr 1fr;gap:18px;padding:25px 0;border-top:1px solid var(--line)}.fuel-row h3{font-size:18px}.fuel-row b{font-size:11px;color:var(--teal)}.fuel-row p{font-size:14px;margin:7px 0 0}.fuel-take{grid-column:2/4;color:var(--muted);border-top:1px dashed var(--line);padding-top:12px}.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0}.levels>div{border-top:3px solid var(--teal);padding:20px;background:white}.levels span{font-size:12px;color:var(--teal)}.levels h3{font-size:22px;margin:6px 0 12px}.levels p{font-size:14px;margin:0}.case{border-top:2px solid var(--teal);padding:26px 0;margin:32px 0}.case-label{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted)}.case-label b{color:var(--teal);font-weight:500}.case h3{font-size:30px;margin:14px 0 20px}.case-meaning{padding:20px 24px;background:white;border-left:2px solid var(--line);margin-bottom:18px}.case-meaning strong{font-size:13px;color:var(--teal)}.case-meaning p{margin:8px 0 0;font-size:15px}.case>a{font-size:13px}.split-note{background:white;border:1px solid var(--line);padding:26px;margin:28px 0}.split-note h3{font-size:21px;margin-bottom:18px}.split-note p{font-size:15px}.split-note p:last-child{margin:0}.action-list{padding-left:26px!important}.action-list li{border-bottom:1px solid var(--line);padding:12px 0 16px 5px!important}.flow-figure img{width:100%;max-width:500px}.hero h1 .title-sub{font-size:40px}.hero-intro{max-width:650px}.article{overflow-wrap:break-word}@media(max-width:600px){.charts{grid-template-columns:1fr;gap:16px}.data-chart{padding:22px}.fuel-row{grid-template-columns:1fr;gap:10px;padding:24px 0}.fuel-row h3{font-size:21px}.fuel-take{grid-column:auto}.levels{grid-template-columns:1fr;gap:12px}.levels>div{display:grid;grid-template-columns:85px 1fr;column-gap:12px;padding:18px}.levels h3{margin:0}.levels p{grid-column:2}.case-label{flex-wrap:wrap}.case h3{font-size:27px}.hero h1 .title-sub{font-size:30px}.note{padding:18px;font-size:13px}.split-note{padding:22px}.flow-figure{padding:20px 6px}.hero-context .crumb{line-height:1.7}.section-head h2{overflow-wrap:anywhere}}@media(prefers-reduced-motion:reduce){.track i{animation:none}}

/* Reveal each chart once when it enters the reading viewport. */
.track i{transform-origin:left center}
.chart-pending .track i{transform:scaleX(0)}
.chart-revealed .track i{animation:chart-reveal .9s cubic-bezier(.22,.61,.36,1) both}
.chart-revealed .bar-row:nth-of-type(2) .track i{animation-delay:120ms}
@keyframes chart-reveal{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media(prefers-reduced-motion:reduce){.chart-pending .track i,.chart-revealed .track i{transform:none;animation:none}}

/* Responsive five-step diagram. Text remains live and selectable. */
.readiness-map{padding:28px;background:linear-gradient(145deg,#fff 0%,#f2f7f5 100%);border:1px solid #d2e1dc;border-radius:16px;box-shadow:0 8px 24px #102a3b06}
.map-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-bottom:24px;border-bottom:1px solid #dce7e2;margin-bottom:24px}
.map-eyebrow{font-size:10px;letter-spacing:1.6px;color:var(--teal);font-weight:650;margin:0 0 7px}
.map-heading h3{font-size:21px;font-weight:650;line-height:1.5}
.map-count{flex-shrink:0;color:var(--teal);font-size:11px;letter-spacing:.5px;border:1px solid #cbded7;border-radius:20px;padding:5px 11px;background:#fff}
.article .readiness-steps{list-style:none;margin:0;padding:0}
.article .readiness-step{margin:0;padding:0}
.step-row{display:grid;grid-template-columns:38px minmax(0,1fr);gap:16px;align-items:center}
.step-number{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid #b3d4c8;border-radius:50%;background:#e8f3ed;color:var(--teal);font:600 13px/1 ui-monospace,monospace}
.step-card{display:grid;grid-template-columns:110px minmax(0,1fr);align-items:center;gap:16px;padding:20px 22px;background:#fff;border:1px solid #d7e5df;border-radius:10px;box-shadow:0 2px 4px #102a3b03}
.step-card h4{font-size:19px;line-height:1.5;color:var(--navy);margin:0;font-weight:650}
.step-card p{font-size:14px;line-height:1.8;color:var(--muted);margin:0;text-wrap:balance}
.step-connector{display:grid;grid-template-columns:38px minmax(0,1fr);align-items:center;gap:16px;height:36px;font-size:11px;color:#607b72}
.connector-arrow{text-align:center;font-size:22px;line-height:1;color:#76a993}
.final-step .step-number{background:var(--teal);border-color:var(--teal);color:#fff}
.final-step .step-card{background:var(--navy);border-color:var(--navy)}
.final-step h4{color:var(--mint)}
.final-step p{color:#dae7e9}
.readiness-map figcaption{margin-top:24px;padding-top:18px;font-size:12px;line-height:1.8;border-top:1px solid #dce7e2;color:var(--muted)}
@media(max-width:1100px) and (min-width:861px){.step-card{grid-template-columns:1fr;gap:5px}}
@media(max-width:600px){.readiness-map{padding:20px 14px;border-radius:12px}.map-heading{align-items:flex-start;gap:10px;margin-bottom:20px;padding-bottom:18px}.map-heading h3{font-size:18px}.map-eyebrow{font-size:9px;letter-spacing:1px}.map-count{font-size:10px;padding:3px 8px}.step-row,.step-connector{grid-template-columns:30px minmax(0,1fr);gap:11px}.step-number{width:30px;height:30px;font-size:11px}.step-card{grid-template-columns:1fr;gap:5px;padding:14px 16px}.step-card h4{font-size:18px}.step-card p{font-size:14px;line-height:1.75}.step-connector{height:32px;font-size:10px}.readiness-map figcaption{font-size:11px;padding:16px 0 0;margin-top:20px}}
@media(max-width:360px){.map-heading{display:block}.map-count{display:inline-block;margin-top:10px}.step-card{padding:13px}.readiness-map{padding-left:12px;padding-right:12px}}
