:root{--paper:#f5f8fc;--ink:#26313e;--muted:#637082;--blue:#a8c9f3;--pink:#f4b7bd;--yellow:#f8d58e;--mint:#b8ddcf;--lavender:#c7cef2;--line:#dce4ee;--body:"PingFang TC","Microsoft JhengHei",sans-serif;--display:"Arial","PingFang TC","Microsoft JhengHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.8 var(--body);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:5px}button,input{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #305f9e;outline-offset:4px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.4;letter-spacing:-.035em}.wrap{max-width:1280px;margin:auto;padding-inline:48px}.preview-bar{background:#26313e;color:#fff;text-align:center;padding:7px 16px;font-size:12px;letter-spacing:.03em}.header{height:112px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:9px;line-height:1;white-space:nowrap}.brand b{font:900 34px/1 Arial,sans-serif;letter-spacing:-2px}.brand span{font-weight:750;font-size:19px}.header nav{display:flex;align-items:center;gap:30px;font-size:15px;font-weight:650}.nav-cta{background:#fff;border-radius:40px;padding:10px 20px}.catalog-hero{background:var(--blue);border-radius:24px;display:grid;grid-template-columns:1.12fr 1fr;padding:52px 48px;min-height:425px;align-items:center;gap:30px}.eyebrow{font-size:14px;font-weight:650;margin-bottom:18px}h1{font-size:clamp(34px,4vw,52px);font-weight:800;line-height:1.35}.intro{font-size:18px;margin-top:22px}.pill{display:inline-flex;gap:40px;align-items:center;border-radius:40px;background:var(--yellow);padding:12px 24px;font-size:17px;font-weight:750;margin-top:27px}.pill 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var(--line);border-radius:17px;overflow:hidden;display:flex;flex-direction:column}.card-art{height:135px;background:var(--blue);display:grid;place-items:center;overflow:hidden;position:relative}.card-art:after{content:"";width:130px;height:130px;border:20px solid #fff4;border-radius:50%;position:absolute;right:-30px;top:15px}.card-art span{font:700 57px/1 Arial,sans-serif;letter-spacing:-5px;z-index:1;transform:rotate(-7deg)}.color-1{background:var(--pink)}.color-2{background:var(--yellow)}.color-3{background:var(--mint)}.color-4{background:var(--lavender)}.color-5{background:#cfddf5}.card-detail{padding:24px;display:flex;flex-direction:column;flex:1}.category{font-size:13px;color:var(--muted);margin-bottom:10px}.article-card h3{font-size:20px;line-height:1.6}.card-status{font-size:13px;color:var(--muted);margin-top:auto;padding-top:22px}.card-status[href]{color:var(--ink);font-weight:700}.empty{padding:50px 0;text-align:center}.consult{margin:65px 0 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/* Article: restrained reading surface, with diagrams doing the explaining. */
.breadcrumb{font-size:14px;color:var(--muted);margin:14px 0 24px}.article-title{max-width:850px;margin:0 auto;padding:20px 0 34px}.article-title h1{font-size:clamp(32px,4vw,46px);margin:15px 0 20px}.article-title .dek{font-size:20px;line-height:1.85;color:#526075}.byline{font-size:13px;color:var(--muted);margin-top:20px}.article-cover{background:var(--yellow);border-radius:23px;padding:40px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:40px;margin-bottom:46px}.cover-copy p{font-size:14px;margin-bottom:12px}.cover-copy h2{font-size:31px}.article-cover .stack{transform:rotate(3deg);width:260px;margin:auto}.reading-layout{display:grid;grid-template-columns:minmax(0,780px) 220px;gap:55px;align-items:start;justify-content:center}.prose{background:#fff;border:1px solid var(--line);padding:42px 48px;border-radius:20px;font-size:18px;line-height:1.95}.prose p{margin-bottom:22px}.prose h2{font-size:27px;margin:48px 0 21px;scroll-margin-top:25px}.prose h2:first-child{margin-top:0}.prose h3{font-size:20px;margin:27px 0 13px}.prose ul,.prose ol{padding-left:24px}.prose li{margin-bottom:11px}.takeaway{background:#eaf2fc;border-left:4px solid #86aee0;padding:22px 25px;margin-bottom:30px;border-radius:0 10px 10px 0}.takeaway p{margin:8px 0 0;font-size:17px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0}.compare-cell{border-radius:12px;padding:22px;background:#f0f3f7;font-size:16px}.compare-cell.good{background:#e5f3ed}.compare-cell strong{display:block;margin-bottom:10px}.compare-cell p{margin:0}.journey{margin:25px 0;list-style:none;padding:0!important;counter-reset:journey}.journey li{display:grid;grid-template-columns:37px 1fr;gap:14px;align-items:start;padding:18px;border-radius:12px;background:#eaf2fc;margin-bottom:10px;counter-increment:journey}.journey li:before{content:counter(journey);background:#fff;border-radius:50%;width:32px;height:32px;text-align:center;font:700 16px/32px Arial,sans-serif}.journey li:nth-child(2){background:#fce9ec}.journey li:nth-child(3){background:#e6f4ee}.journey li:nth-child(4){background:#fcf1d8}.journey li:nth-child(5){background:#edeefa}.journey b{font-size:18px}.journey p{font-size:16px;margin:3px 0 0}.caution{font-size:15px;background:#fcf1d8;padding:18px 22px;border-radius:12px;margin:26px 0}.checklist{list-style:none;padding-left:0!important}.checklist li{padding:10px 0 10px 32px;border-bottom:1px solid var(--line);position:relative}.checklist li:before{content:"✓";position:absolute;left:3px;color:#406f5a}.article-end{margin-top:36px;padding-top:24px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}.article-end p{margin-bottom:8px}.toc{position:sticky;top:30px;font-size:14px}.toc h2{font-size:15px;margin-bottom:13px}.toc a{display:block;padding:9px 0;color:var(--muted);border-bottom:1px solid var(--line)}.toc .toc-cta{background:var(--mint);border:0;padding:16px 20px;margin-top:24px;border-radius:10px;color:var(--ink);font-weight:650}.related{margin-top:55px}.related h2{font-size:27px;margin-bottom:20px}.related-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}.related-item{background:#fff;border:1px solid var(--line);padding:25px;border-radius:15px}.related-item h3{font-size:20px;margin-top:9px}.related-item p{font-size:14px;color:var(--muted);margin-top:13px}
@media(max-width:950px){.wrap{padding-inline:28px}.catalog-hero{padding:38px 30px;gap:10px}.hero-visual{transform:scale(.85)}.note-small{left:-20px}.header nav{gap:17px}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-layout{grid-template-columns:minmax(0,1fr)}.toc{display:none}.prose{padding:35px}.feature-copy{padding:28px}.feature h3{font-size:24px}}
@media(max-width:620px){.preview-bar{font-size:10px}.wrap{padding-inline:20px}.header{height:90px;gap:14px;flex-wrap:wrap;align-content:center}.brand b{font-size:28px}.brand span{font-size:16px}.header nav{gap:15px;font-size:12px}.header nav>a:first-child{display:none}.nav-cta{padding:8px 12px}.catalog-hero{grid-template-columns:1fr;padding:32px 26px;gap:30px}.catalog-hero h1{font-size:36px}.intro{font-size:17px;margin-top:18px}.hero-visual{min-height:255px;transform:none;max-width:300px;width:100%;margin:auto}.page-model{width:225px;min-height:235px;padding:10px 15px 17px}.product-shape{height:65px}.product-shape:before{left:24px;top:9px;height:45px;width:23px}.model-row{height:17px}.note{font-size:12px;padding:10px 13px}.note-small{left:-7px;top:0}.note-bottom{right:-7px;bottom:0}.article-section{padding-top:39px}.section-top h2{font-size:26px}.filters{gap:8px}.filters button{padding:6px 12px;font-size:14px}.search{align-items:flex-start;flex-direction:column;gap:6px}.search input{max-width:none}.feature{grid-template-columns:1fr}.feature-art{padding:24px;min-height:225px}.feature-copy{padding:27px 24px}.feature h3{font-size:25px}.preview-help{font-size:12px}.cards{gap:16px;grid-template-columns:1fr}.article-card{display:grid;grid-template-columns:95px 1fr;border-radius:14px}.card-art{height:auto;min-height:160px}.card-art span{font-size:41px;letter-spacing:-3px}.card-detail{padding:19px}.article-card h3{font-size:18px}.category{margin-bottom:6px;font-size:12px}.card-status{padding-top:14px;font-size:12px}.consult{padding:28px 25px;align-items:flex-start;flex-direction:column;gap:22px;margin-top:40px}.consult h2{font-size:27px}.consult p{font-size:16px}.footer{flex-wrap:wrap;justify-content:flex-start;gap:22px;padding-top:20px;padding-bottom:35px}.footer p{flex-basis:100%;order:3}.breadcrumb{font-size:12px;margin:0 0 18px}.article-title{padding-top:13px}.article-title h1{font-size:32px}.article-title .dek{font-size:18px}.article-cover{padding:27px 24px;grid-template-columns:1fr;gap:24px;margin-bottom:25px}.cover-copy h2{font-size:26px}.article-cover .stack{width:220px}.prose{padding:26px 22px;font-size:17px;line-height:1.95}.prose h2{font-size:24px;margin-top:38px}.prose h3{font-size:19px}.takeaway{padding:19px}.comparison{grid-template-columns:1fr}.journey li{padding:15px 13px;gap:10px}.journey p{font-size:15px}.related-list{grid-template-columns:1fr}.related{margin-top:35px}}
.article-cover{margin-inline:0}
.image-hero{min-height:0}.image-hero img{display:block;width:100%;height:auto;border-radius:15px}.feature-art.image-feature{padding:0;background:var(--paper)}.image-feature img{display:block;width:100%;height:100%;object-fit:cover}.card-art.has-image:after{display:none}.card-art.has-image img{width:100%;height:100%;object-fit:cover}.article-cover.image-cover{display:block;background:transparent;padding:0;overflow:hidden}.image-cover img{width:100%;max-height:510px;object-fit:cover;border-radius:20px;display:block}.image-cover figcaption{font-size:12px;color:var(--muted);padding-top:9px}
@media(max-width:620px){.hero-visual.image-hero{max-width:none;min-height:0}.card-art.has-image img{object-position:center}.article-cover.image-cover{padding:0}.image-cover img{border-radius:14px;max-height:none}.feature-art.image-feature{min-height:0}.image-feature img{height:auto}}
@media(max-width:620px){.article-title h1{font-size:28px;text-wrap:balance}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.card-summary{font-size:14px;line-height:1.8;color:var(--muted);margin-top:12px}.article-diagram{margin:30px 0;padding:24px;background:#edf3fb;border-radius:15px}.article-diagram figcaption{font-size:15px;font-weight:700;margin-bottom:17px}.article-diagram ol{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:10px;padding:0;list-style:none}.article-diagram li{margin:0;background:var(--blue);border-radius:10px;padding:15px 10px;font-size:15px;line-height:1.6;display:flex;align-items:center;flex-direction:column;text-align:center;gap:9px}.article-diagram li:nth-child(2){background:var(--pink)}.article-diagram li:nth-child(3){background:var(--mint)}.article-diagram li:nth-child(4){background:var(--yellow)}.article-diagram li:nth-child(5){background:var(--lavender)}.article-diagram li span{font:700 14px/28px Arial,sans-serif;background:#fff8;border-radius:50%;width:28px;height:28px}.table-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:11px;margin:25px 0}.table-scroll table{border-collapse:collapse;width:100%;min-width:440px;font-size:15px;line-height:1.8;text-align:left}.table-scroll th,.table-scroll td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top;min-width:100px}.table-scroll th{background:#eaf2fc;font-weight:700}.table-scroll tr:last-child td{border-bottom:0}.prose pre{max-width:100%;padding:22px;background:#edf2f8;border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.9 ui-monospace,"PingFang TC",monospace}.prose blockquote{margin:22px 0;padding:18px 23px;background:#f1f6fc;border-left:4px solid #8eadd9;border-radius:0 10px 10px 0}.prose blockquote p:last-child{margin:0}.mobile-toc{display:none}.toc{max-height:calc(100vh - 60px);overflow:auto}.toc a{line-height:1.7}.related-item{text-decoration:none}.related-item:hover h3{text-decoration:underline;text-underline-offset:5px}
@media(max-width:950px){.mobile-toc{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 20px;margin-bottom:22px}.mobile-toc summary{font-weight:700;cursor:pointer}.mobile-toc a{display:block;font-size:14px;padding:8px 0;color:var(--muted)}}
@media(max-width:620px){.article-diagram{padding:18px}.article-diagram ol{grid-template-columns:1fr}.article-diagram li{flex-direction:row;text-align:left;padding:10px 13px}.article-diagram li span{flex-shrink:0}.card-summary{font-size:13px}.table-scroll table{font-size:14px}.table-scroll th,.table-scroll td{padding:11px 13px}}
.article-diagram ol{grid-template-columns:repeat(auto-fit,minmax(90px,1fr))}
.filters button{font-size:17px;font-weight:650}.category{font-size:16px;font-weight:650}.tag{font-size:16px;font-weight:650}.article-card h3,.article-title h1,.related-item h3,.feature h3{font-weight:800}
@media(max-width:620px){.filters button{font-size:16px}.category,.tag{font-size:15px}}
@media(max-width:620px){.article-diagram ol{grid-template-columns:1fr}}

.article-check{display:flex;gap:12px;align-items:flex-start;cursor:pointer}.article-check input{width:20px;height:20px;flex:0 0 20px;margin-top:7px;accent-color:#377bb8}.article-check input:focus-visible{outline:3px solid #377bb8;outline-offset:3px}