*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;font:400 16px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--ink);background:var(--paper)}h1,h2,h3,p,figure{margin:0}h1,h2,h3,strong,b{font-weight:600}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:5px}a:focus-visible,button:focus-visible{outline:2px solid var(--ink);outline-offset:5px}img{display:block;max-width:100%;height:auto}button{font:inherit}.shell{width:min(1120px,calc(100% - 48px));margin-inline:auto}.skip-link{position:absolute;top:-80px;left:20px;z-index:10;padding:10px 16px;background:var(--ink);color:var(--paper)}.skip-link:focus{top:10px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:98px}.brand{display:inline-flex;align-items:center;gap:12px;font-size:18px;font-weight:600;line-height:1.4}.brand-mark{display:grid;place-items:center;width:32px;height:32px;flex:none;border:1px solid currentColor;font-size:14px}.site-nav{display:flex;align-items:center;gap:26px;font-size:14px;line-height:1.4}.header-note,.eyebrow,.small-label{font-size:12px;letter-spacing:.08em;color:var(--muted)}.button{display:inline-flex;gap:24px;align-items:center;padding:10px 23px;border:1px solid transparent;border-radius:999px;font-size:16px;line-height:1.5}.primary{background:var(--accent);color:var(--on-accent)}.hero{padding-top:36px}.hero h1{font-size:clamp(42px,6.8vw,76px);line-height:1.22;letter-spacing:-.045em;margin:18px 0 24px}.hero-intro{max-width:640px;margin-bottom:26px;color:var(--muted)}.hero-image img{width:100%;max-height:460px;object-fit:cover}.hero-image figcaption{font-size:12px;color:var(--muted);padding-top:9px}.category-section{margin-top:54px;margin-bottom:66px}.category-links{display:grid;grid-template-columns:repeat(3,1fr)}.category-links>a{display:grid;gap:12px;padding:22px 24px;position:relative}.category-links h2{font-size:24px;line-height:1.4}.category-links p{font-size:14px;color:var(--muted)}.category-number{font-size:12px;color:var(--muted)}.category-links>a>span:last-child{position:absolute;right:24px;top:22px}.latest-section,.equipment-section{margin-bottom:72px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.section-heading h2,.section-title{font-size:30px;line-height:1.5}.section-heading>a{font-size:14px}.article-row{display:grid;grid-template-columns:140px minmax(0,1fr) 28px;gap:26px;padding:27px 0;border-top:1px solid var(--line)}.row-meta{font-size:12px;color:var(--muted);display:flex;flex-direction:column;gap:8px}.row-copy h3{font-size:21px;line-height:1.55;margin-bottom:8px}.row-copy p{font-size:14px;line-height:1.8;color:var(--muted)}.row-arrow{align-self:center;text-align:center;font-size:23px}.equipment-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;margin-top:26px}.equipment-grid article{padding:26px 0;border-top:1px solid var(--line)}.equipment-grid h3{font-size:23px;line-height:1.5;margin:12px 0}.equipment-grid p{font-size:15px;color:var(--muted)}.site-footer{margin-top:80px;padding-top:44px;padding-bottom:28px}.site-footer nav{display:flex;flex-wrap:wrap;gap:18px 26px;font-size:14px}.footer-base{font-size:12px;display:flex;justify-content:space-between;gap:24px;padding-top:28px}.page-main{padding-top:24px;padding-bottom:24px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:42px}.page-heading{max-width:760px;margin-bottom:44px}.page-heading h1,.single-article h1{font-size:clamp(34px,4.5vw,52px);line-height:1.3;margin-bottom:18px}.page-heading p{color:var(--muted)}.reading-layout{display:grid;grid-template-columns:minmax(0,780px) minmax(170px,1fr);gap:56px;align-items:start}.reading-article{min-width:0}.article-heading h1{font-size:clamp(30px,4vw,46px);line-height:1.45;margin:16px 0 24px;letter-spacing:-.02em}.article-intro{font-size:18px;line-height:1.9;color:var(--muted);margin-bottom:18px}.article-date{font-size:12px;color:var(--muted)}.prose{margin-top:36px;overflow-wrap:anywhere}.prose h2{font-size:25px;line-height:1.55;margin:48px 0 20px}.prose p{margin:0 0 22px;line-height:1.95}.prose a{text-decoration:underline;text-underline-offset:4px}.prose figure{margin:30px 0}.prose figure img{width:auto;margin-inline:auto;max-height:480px;object-fit:contain}.prose figcaption{font-size:12px;color:var(--muted);padding-top:10px}.table-scroll{overflow-x:auto;max-width:100%;margin:30px 0;border:1px solid var(--line)}table{border-collapse:collapse;width:100%;min-width:520px;text-align:left;font-size:15px}th,td{padding:14px 17px;border-bottom:1px solid var(--line);vertical-align:top}th{font-weight:600;background:var(--surface)}tbody tr:last-child td{border-bottom:0}.toc{position:sticky;top:28px;border-left:1px solid var(--line);padding-left:20px;font-size:13px}.toc>p{font-size:12px;margin-bottom:14px;color:var(--muted)}.toc nav{display:grid;gap:12px}.article-end{display:flex;justify-content:space-between;gap:24px;border-top:1px solid var(--line);margin-top:48px;padding-top:22px;font-size:14px}.related-section{margin-top:66px}.related-section h2{margin-bottom:24px}.single-article{max-width:800px}.pagination{display:flex;gap:24px;justify-content:center;margin-top:36px;font-size:14px}.empty-state{padding:32px 0;color:var(--muted)}.error-page{min-height:80vh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:20px}.error-code{font-size:96px;line-height:1}.error-page h1{font-size:28px}.secondary-nav{display:flex;gap:28px;font-size:14px}.site-footer small{font-size:12px}
@media(max-width:800px){.shell{width:calc(100% - 40px)}.site-header{min-height:90px;gap:18px;flex-wrap:wrap;padding-block:22px}.site-nav{gap:22px}.hero{padding-top:22px}.hero h1{font-size:42px;letter-spacing:-.035em}.hero-image img{max-height:340px}.category-links{grid-template-columns:1fr}.category-links>a{padding:22px 0}.category-links>a>span:last-child{right:0}.category-section{margin-top:34px;margin-bottom:48px}.article-row{grid-template-columns:minmax(0,1fr) 24px;gap:10px 18px;padding:24px 0}.row-meta{grid-column:1/-1;flex-direction:row;gap:18px}.row-copy h3{font-size:20px}.equipment-grid{grid-template-columns:1fr;gap:8px}.section-heading h2,.section-title{font-size:27px}.section-heading>a{font-size:12px}.reading-layout{grid-template-columns:minmax(0,1fr);gap:0}.toc{display:none}.breadcrumbs{margin-bottom:28px}.article-heading h1{font-size:30px}.article-intro{font-size:17px}.prose h2{font-size:23px;margin-top:38px}.prose p{line-height:1.95}.site-footer{margin-top:50px}.footer-base{flex-direction:column;gap:10px}.latest-section,.equipment-section{margin-bottom:48px}}
 :root{--paper:#deded9;--surface:#efefeb;--ink:#141413;--muted:#565650;--line:#aaa9a2;--accent:#dc2626;--on-accent:#fff}.site-header{border-bottom:1px solid var(--ink);min-height:88px}.brand-mark{border-radius:50%;font-size:18px;font-weight:400}.site-header>a:last-child{font-size:14px}.secondary-nav{justify-content:flex-end;padding-block:14px}.hero{padding-top:28px}.gallery-label{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:15px;font-size:12px;color:var(--muted)}.hero-gallery{display:grid;grid-template-columns:1.5fr 1fr;gap:80px;align-items:center;padding:22px 0 30px}.hero h1{font-size:72px;line-height:1.22;letter-spacing:-.05em}.hero-intro{max-width:530px}.hero-image{align-self:center;text-align:center}.hero-image img{width:310px;height:310px;margin:auto;object-fit:cover;border-radius:50%}.hero-image figcaption{padding-top:18px;text-align:center;font-size:12px}.category-links{grid-template-columns:1fr;border-top:1px solid var(--ink)}.category-links>a{grid-template-columns:60px 220px 1fr 22px;align-items:center;border-bottom:1px solid var(--line);padding:22px 0;gap:28px}.category-links>a>span:last-child{position:static}.category-links h2{font-size:26px}.category-section{margin-top:24px;margin-bottom:72px}.section-heading h2,.section-title{font-size:38px;letter-spacing:-.025em}.article-rows{counter-reset:notes}.article-row{counter-increment:notes;grid-template-columns:90px minmax(0,1fr) 25px;gap:24px}.row-meta:before{content:counter(notes,decimal-leading-zero);font-size:38px;line-height:1.3;color:var(--ink)}.row-meta{gap:4px}.row-meta time{margin-top:4px}.equipment-grid{gap:60px}.equipment-grid article{border-top:1px solid var(--ink)}.site-footer{border-top:1px solid var(--ink);text-align:center}.footer-wordmark{font-size:72px;line-height:1;letter-spacing:-.055em;margin-bottom:24px}.site-footer nav{justify-content:center;margin:24px 0 30px}.site-footer small{color:var(--muted)}.page-heading{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:end;border-bottom:1px solid var(--ink);padding-bottom:32px}.page-heading h1{margin:0;font-size:54px}.reading-article{border-top:1px solid var(--ink);padding-top:20px}.toc{border-left-color:var(--ink)}.single-article h1{font-size:50px}.prose table{background:var(--surface)}@media(max-width:800px){.site-header{flex-wrap:nowrap;gap:14px}.site-header .brand{font-size:16px;max-width:250px}.site-header .header-note{display:none}.secondary-nav{justify-content:space-between}.hero-gallery{grid-template-columns:1fr;gap:30px;padding-top:6px}.hero h1{font-size:42px;line-height:1.25}.hero-image img{width:210px;height:210px}.hero-image{margin-bottom:10px}.category-links>a{grid-template-columns:30px 1fr 20px;gap:8px 18px;padding:24px 0}.category-links>a p{grid-column:2;grid-row:2}.category-links>a>span:last-child{grid-column:3;grid-row:1}.category-links h2{font-size:24px}.article-row{grid-template-columns:minmax(0,1fr) 24px;gap:12px}.row-meta{flex-direction:row;gap:14px;align-items:center}.row-meta:before{font-size:21px;line-height:1.4}.row-meta time{margin:0}.equipment-grid{gap:0}.section-heading h2,.section-title{font-size:30px}.page-heading{grid-template-columns:1fr;gap:15px}.page-heading h1,.single-article h1{font-size:36px}.footer-wordmark{font-size:60px}}