/* Wise reference with task overrides; Chinese system fonts, single accent, no animation. */
:root{--paper:#fafafa;--surface:#fff;--ink:#171717;--body:#4d4d4d;--muted:#666;--line:#dedede;--soft:#f0f0f0;--accent:#7c3aed;--font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color-scheme:light}*{box-sizing:border-box}html{scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.65 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,a{-webkit-tap-highlight-color:transparent}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}p,h1,h2,h3,figure{margin:0}h1,h2,h3{font-weight:600;overflow-wrap:anywhere}p{color:var(--body)}.shell{max-width:1200px;padding:0 40px;margin-inline:auto}.skip-link{position:fixed;top:-100px;left:20px;background:var(--accent);padding:10px;z-index:99}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;background:var(--paper);border-bottom:1px solid var(--line);z-index:20}.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{display:flex;align-items:baseline;gap:18px;white-space:nowrap}.brand:hover{text-decoration:none}.brand-name{font-family:Arial,sans-serif;font-size:30px;letter-spacing:-1.8px;font-weight:600}.brand-dot{margin-left:2px;font-weight:400}.brand-caption{font-size:12px;color:var(--muted)}.header-inner nav{display:flex;gap:28px;align-items:center;font-size:14px;white-space:nowrap}.header-inner nav a{padding:10px 0}.header-inner nav a[aria-current]{box-shadow:inset 0 -1px var(--ink)}.hero{padding-top:64px;padding-bottom:64px;display:grid;grid-template-columns:1fr .94fr;gap:60px;align-items:center}.eyebrow{font-size:12px;color:var(--muted);display:block;margin-bottom:24px}.hero h1{font-size:clamp(38px,4.3vw,60px);line-height:1.25;letter-spacing:-1.8px;font-weight:400}.hero-copy>p{margin-top:22px;max-width:28em}.button{display:inline-flex;align-items:center;justify-content:center;gap:24px;border:1px solid var(--ink);padding:11px 23px;border-radius:999px;font-size:14px;min-height:46px;white-space:nowrap}.button:hover{text-decoration:none;box-shadow:0 0 0 1px var(--ink)}.button:active{transform:translateY(1px)}.primary{background:var(--accent);color:var(--ink);border-color:var(--accent)}.hero .button{margin-top:30px}.hero-image img{width:100%;aspect-ratio:1.4;object-fit:cover}.hero-image figcaption{font-size:12px;color:var(--muted);margin-top:12px}.category-section{padding-bottom:48px}.category-links{border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr)}.category-links>a{padding:26px 24px 26px 0}.category-links>a+a{border-left:1px solid var(--line);padding-left:28px}.category-links>a:hover{text-decoration:none}.category-links h2{display:flex;align-items:center;justify-content:space-between;font-size:20px;font-weight:400;margin-bottom:12px}.category-links h2 span{font-size:24px}.category-links p{max-width:24em;font-size:14px}.latest-section,.equipment-section{padding-top:32px;padding-bottom:64px}.section-title{font-size:30px;font-weight:400;letter-spacing:-.5px;margin-bottom:30px}.article-rows{border-top:1px solid var(--line)}.article-row{display:grid;grid-template-columns:128px minmax(0,1fr) 32px;gap:30px;padding:26px 0;border-bottom:1px solid var(--line);align-items:start}.row-meta{font-size:12px;color:var(--muted);display:flex;flex-direction:column;gap:6px;padding-top:4px}.row-copy h3{font-size:20px;line-height:1.5;font-weight:400;margin-bottom:8px}.row-copy p{font-size:14px;max-width:58em}.row-arrow{font-size:24px;line-height:1.5;text-align:right}.equipment-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}.equipment-grid article{border-top:1px solid var(--line);padding-top:22px}.small-label{font-size:12px;color:var(--muted)}.equipment-grid h3{font-size:26px;font-weight:400;margin:8px 0 12px}.equipment-grid p{max-width:32em;font-size:15px}.text-link{display:inline-block;margin-top:20px;font-size:14px;border-bottom:1px solid var(--ink)}.site-footer{border-top:1px solid var(--line);padding-top:40px}.footer-grid{display:flex;justify-content:space-between;gap:40px;padding-bottom:40px}.footer-brand{font:400 38px/1.3 Arial,sans-serif;letter-spacing:-2px}.footer-grid p{font-size:13px;margin-top:14px}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:12px 40px;font-size:13px;align-content:start}.footer-bottom{border-top:1px solid var(--line);padding-top:20px;padding-bottom:24px;display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.page-main{padding-top:32px;padding-bottom:80px;min-height:60vh}.breadcrumbs{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:40px}.breadcrumbs>span:last-child{overflow-wrap:anywhere}.page-heading{max-width:760px;margin-bottom:48px}.page-heading h1{font-size:44px;line-height:1.3;font-weight:400;margin-bottom:18px}.page-heading p{max-width:44em}.pagination{display:flex;justify-content:center;gap:28px;margin-top:32px;font-size:14px}.reading-layout{display:grid;grid-template-columns:minmax(0,760px) 220px;gap:80px;align-items:start}.article-heading{border-bottom:1px solid var(--line);padding-bottom:30px;margin-bottom:32px}.article-heading h1{font-size:38px;line-height:1.45;font-weight:400;margin:12px 0 20px;letter-spacing:-.5px}.article-intro{font-size:18px;line-height:1.85}.article-date{display:block;font-size:12px;color:var(--muted);margin-top:24px}.toc{position:sticky;top:110px;border-left:1px solid var(--line);padding-left:22px;font-size:13px}.toc>p{color:var(--ink);font-weight:600;margin-bottom:16px}.toc nav{display:flex;flex-direction:column;gap:13px}.toc a{color:var(--muted);line-height:1.6}.prose{font-size:16px;line-height:1.95;color:var(--body);overflow-wrap:anywhere}.prose>p,.prose>ul,.prose>ol{margin:0 0 22px}.prose h2{color:var(--ink);font-size:25px;font-weight:600;line-height:1.5;margin:44px 0 18px;scroll-margin-top:100px}.prose h3{font-size:19px;margin:28px 0 14px;color:var(--ink)}.prose a{text-decoration:underline;text-underline-offset:4px}.prose li{margin-bottom:8px}.prose figure{margin:30px 0}.prose figure img{width:100%;max-height:520px;object-fit:contain;background:var(--soft)}.prose figcaption{font-size:12px;line-height:1.7;color:var(--muted);margin-top:10px}.table-scroll{overflow:auto;margin:26px 0;border:1px solid var(--line)}.prose table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.75;min-width:460px;background:var(--surface)}.prose th{text-align:left;background:var(--soft);color:var(--ink);font-weight:600}.prose th,.prose td{padding:12px 16px;vertical-align:top}.prose tr+tr td{border-top:1px solid var(--line)}.prose .note{padding:20px 24px;border-left:2px solid var(--ink);background:var(--soft);font-size:14px}.article-end{border-top:1px solid var(--line);margin-top:48px;padding-top:24px;display:flex;justify-content:space-between;font-size:13px}.related-section{margin-top:70px;max-width:760px}.related-section .article-row{grid-template-columns:90px minmax(0,1fr) 24px;gap:20px}.single-article{max-width:760px;margin-bottom:50px}.single-article>h1{font-size:44px;font-weight:400;margin-bottom:30px}.error-page{padding-top:80px}.error-code{font-size:100px;line-height:1.4}.error-page h1{font-size:32px;font-weight:400;margin-bottom:28px}
@media(max-width:1023px){.hero{gap:30px;grid-template-columns:1fr 1fr}.hero h1{font-size:40px}.reading-layout{grid-template-columns:minmax(0,1fr);gap:0}.toc{display:none}.reading-article{max-width:760px}.brand-caption{display:none}.hero-image img{aspect-ratio:1.1}.article-heading h1{font-size:34px}}
@media(max-width:767px){.shell{padding-inline:20px}.header-inner{height:64px;gap:16px}.brand-name{font-size:25px}.header-inner nav{gap:16px;font-size:13px}.hero{display:block;padding-top:36px;padding-bottom:34px}.hero h1{font-size:40px;letter-spacing:-1px;line-height:1.3}.eyebrow{margin-bottom:18px}.hero-copy>p{font-size:15px;max-width:22em}.hero .button{margin-top:22px}.hero-image{margin-top:32px}.hero-image img{aspect-ratio:1.8}.category-section{padding-bottom:26px}.category-links{grid-template-columns:1fr}.category-links>a,.category-links>a+a{padding:20px 0;border-left:0;border-bottom:1px solid var(--line)}.category-links h2{font-size:20px;margin-bottom:6px}.category-links p{max-width:none}.latest-section,.equipment-section{padding-top:28px;padding-bottom:42px}.section-title{font-size:27px;margin-bottom:22px}.article-row{grid-template-columns:minmax(0,1fr) 24px;gap:6px 16px;padding:22px 0}.row-meta{grid-column:1/3;flex-direction:row;gap:16px;padding:0;margin-bottom:4px}.row-copy h3{font-size:19px}.row-copy p{font-size:14px}.row-arrow{grid-column:2;grid-row:2}.equipment-grid{grid-template-columns:1fr;gap:28px}.equipment-grid h3{font-size:24px}.footer-grid{display:block;padding-bottom:28px}.footer-links{display:flex;flex-wrap:wrap;gap:16px 24px;margin-top:28px}.footer-brand{font-size:32px}.footer-bottom{gap:16px;font-size:12px}.footer-bottom>a{white-space:nowrap}.page-main{padding-top:24px;padding-bottom:48px}.breadcrumbs{margin-bottom:28px;gap:8px}.page-heading{margin-bottom:32px}.page-heading h1,.single-article>h1{font-size:32px}.page-heading p{font-size:15px}.article-heading h1{font-size:28px;line-height:1.5;letter-spacing:0}.article-intro{font-size:16px}.prose h2{font-size:23px;margin-top:36px}.prose th,.prose td{padding:10px 12px}.prose .note{padding:16px}.related-section{margin-top:44px}.related-section .article-row{grid-template-columns:1fr 24px;gap:6px 16px}}
@media(max-width:359px){.header-inner nav{gap:10px;font-size:12px}.brand-name{font-size:22px}.shell{padding-inline:16px}.hero h1{font-size:36px}}

.primary{color:#fff}.hero-copy>p,.category-links p,.row-copy p,.equipment-grid p,.page-heading p{font-size:16px}.brand-name{letter-spacing:-1px}.hero-image figcaption{font-size:12px}.site-header{position:relative}.hero h1{font-weight:600}.table-scroll{max-width:100%}.header-inner{flex-wrap:wrap}.brand-name{overflow-wrap:anywhere}.footer-links a{font-size:14px}.preview-note{padding:7px 20px;background:#ededed;color:#555;font-size:12px;text-align:center}
.shell{max-width:1160px}.header-inner{height:92px}.brand{align-items:center;gap:14px}.brand-name{font-size:34px}.brand-caption{border-left:1px solid var(--line);padding-left:14px}.header-inner nav{padding:5px 16px;border:1px solid var(--line);border-radius:99px;gap:24px}.hero{display:flex;flex-direction:column;gap:36px;text-align:center;padding-block:66px 40px}.hero-copy{max-width:880px}.hero h1{font-size:62px;letter-spacing:-2px}.hero-copy>p{margin:24px auto 0;max-width:40em}.hero-image{width:100%;margin:0}.hero-image img{aspect-ratio:2.5;border-radius:18px}.category-links{border:0;gap:16px}.category-links>a,.category-links>a+a{background:#f1f1f1;border:1px solid var(--line);border-radius:18px;padding:26px}.category-links h2{margin-top:18px}.equipment-grid article{background:#f1f1f1;padding:28px;border-radius:18px;border:1px solid var(--line)}.footer-grid{display:flex;align-items:center;justify-content:space-between}.footer-links{display:flex;gap:24px}.footer-brand{font-size:28px}.site-footer{background:#fff}.article-row{grid-template-columns:110px minmax(0,1fr) 32px}@media(max-width:767px){.header-inner{height:auto;padding-block:19px;gap:16px}.brand-name{font-size:30px}.brand-caption{display:inline;font-size:12px}.header-inner nav{width:100%;justify-content:space-between;padding:0 15px;font-size:14px}.hero{padding-top:36px;gap:28px}.hero h1{font-size:36px;letter-spacing:-1px}.hero-image img{aspect-ratio:1.6;border-radius:12px}.hero-image figcaption{text-align:left}.category-links{gap:12px}.category-links>a,.category-links>a+a{padding:22px}.footer-grid{display:block}.footer-links{flex-wrap:wrap}.article-row{grid-template-columns:1fr 24px}.hero-copy>p{font-size:16px}}
.empty-state{padding:28px 0;color:var(--muted);font-size:16px;line-height:1.8}.empty-state a{display:inline-block;margin-top:12px;text-decoration:underline;text-underline-offset:4px}.equipment-grid>.empty-state{grid-column:1/-1}