:root{--paper:#f3f3eb;--ink:#192a26;--muted:#65716b;--line:#d4d9cc;--acid:#d5f264;--white:#fafbf6;--blue:#18364b}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:26px;-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}:focus-visible{outline:3px solid #668524;outline-offset:4px}::selection{background:var(--acid)}.skip{position:fixed;top:-100px;left:15px;background:var(--ink);color:white;padding:12px;z-index:10}.skip:focus{top:10px}.site-header,main,footer{max-width:1260px;margin:auto;padding-left:48px;padding-right:48px}.top{height:96px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{font-size:33px;font-weight:750;letter-spacing:-1.7px}.brand span{color:#7d943c}.back{font-size:13px;color:var(--muted)}.site-header>nav{display:flex;gap:30px;min-height:65px;align-items:center;overflow-x:auto;white-space:nowrap;font-size:14px;scrollbar-width:thin}.site-header>nav a{padding:10px 0;border-bottom:2px solid transparent}.site-header>nav a[aria-current]{border-color:var(--ink)}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--muted);margin:0 0 26px}.home-hero{padding:65px 0 44px}.home-hero h1{font-family:"Songti SC","STSong",serif;font-weight:500;font-size:clamp(48px,6vw,80px);line-height:1.25;letter-spacing:-.04em;margin:0}.home-hero em{font-style:normal;color:#4d6953}.hero-bottom{display:flex;justify-content:space-between;align-items:center;gap:25px;margin:35px 0}.hero-bottom p{color:var(--muted);margin:0}.primary{background:var(--ink);color:var(--paper);padding:16px 24px;display:flex;gap:35px}.primary span{color:var(--acid)}.hero-meta{display:flex;gap:30px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px}.section-head{display:flex;justify-content:space-between;gap:20px;padding:24px 0;border-top:1px solid var(--line);align-items:center}.section-head h2{font-size:20px;font-weight:550;margin:0}.section-head>span{font-size:12px;color:var(--muted)}.directory-row{display:grid;grid-template-columns:65px 1fr 45px;gap:16px;align-items:center;border-bottom:1px solid var(--line);padding:29px 8px;transition:background .2s}.directory-row:hover{background:#e9eddd}.number{font:20px Georgia,serif;color:#758469;align-self:start;padding-top:20px}.label{font-size:12px;color:var(--muted)}.directory-row h3{font-family:"Songti SC",serif;font-size:30px;font-weight:500;margin:6px 0}.directory-row p{font-size:14px;color:var(--muted);margin:0}.arrow{font-size:30px}.search-section{margin-top:56px}.search-section>label{display:block;font-size:13px;color:var(--muted);margin-bottom:12px}#search{width:100%;padding:17px 20px;border:1px solid #b5bea9;background:var(--white);border-radius:0;color:var(--ink)}#search-status{font-size:13px;color:var(--muted)}.search-result{display:block;padding:19px 0;border-bottom:1px solid var(--line)}.search-result strong{font-size:17px;font-weight:550}.search-result small{display:block;color:var(--muted)}.search-result p{font-size:14px;margin:8px 0}.downloads{margin-top:48px}.download-list{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}.download-list a{display:flex;justify-content:space-between;gap:15px;align-items:center;border-bottom:1px solid var(--line);padding:19px 0}.download-list span{font-size:12px;color:var(--muted)}.editor-note{margin:56px 0;border-left:3px solid #899b64;padding:4px 0 4px 22px;max-width:900px}.editor-note h2{font-size:15px;margin:0 0 8px;font-weight:600}.editor-note p{font-size:13px;line-height:1.9;color:var(--muted);margin:0}.article-header{padding:52px 0 34px;border-bottom:1px solid var(--line)}.article-header h1{font-family:"Songti SC","STSong",serif;font-size:clamp(32px,4.3vw,52px);font-weight:500;letter-spacing:-.04em;margin:0 0 28px;line-height:1.4}.article-tools{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:13px}.article-tools a,.article-tools button{border:0;border-bottom:1px solid #9ca791;padding:7px 0;background:none;color:var(--ink);cursor:pointer}.lead{font-size:16px;color:var(--muted);max-width:750px}.article-grid{display:grid;grid-template-columns:236px minmax(0,1fr);gap:55px;align-items:start}.toc{position:sticky;top:25px;padding-top:35px;font-size:13px;max-height:90vh;overflow:auto}.toc summary{font-weight:600;cursor:pointer;padding:10px 0}.toc nav{display:flex;flex-direction:column}.toc a{color:var(--muted);padding:8px 12px;border-left:1px solid var(--line);line-height:1.7}.toc a:hover{color:var(--ink);border-color:var(--ink)}article{min-width:0;padding-top:22px;max-width:820px}article>p{margin:22px 0;text-align:justify;font-size:17px;line-height:2.05}article h2{font-family:"Songti SC",serif;font-weight:600;font-size:27px;line-height:1.6;margin:45px 0 24px;padding-top:18px;border-top:1px solid var(--line)}.table-scroll{overflow-x:auto;margin:28px 0;background:var(--white);border:1px solid var(--line)}table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.7;min-width:500px}th{background:var(--blue);color:#fff;text-align:left;font-weight:500}th,td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}tbody tr:nth-child(even){background:#edf0e7}td:first-child{font-weight:550}.article-end{display:flex;gap:25px;flex-wrap:wrap;border-top:1px solid var(--line);padding:25px 0;margin:55px 0 20px;font-size:14px}.article-end>span{color:var(--muted)}.gallery-bar{display:flex;gap:20px;align-items:center;margin:30px 0;font-size:14px}.gallery-bar select{background:var(--white);border:1px solid var(--line);padding:9px 16px;max-width:70%}.gallery-bar>span{margin-left:auto;color:var(--muted)}.gallery{display:grid;grid-template-columns:1fr 1fr;gap:30px 24px}.gallery figure{min-width:0;margin:0}.gallery figure[hidden]{display:none}.slide-open{border:1px solid var(--line);padding:0;background:#fff;display:block;width:100%;cursor:zoom-in}.slide-open img{display:block;width:100%;height:auto}.gallery figcaption{font-size:14px;line-height:1.6;padding:12px 0;display:flex;gap:14px}.gallery figcaption>span{color:#758469;font-variant-numeric:tabular-nums}.gallery-empty{color:var(--muted)}dialog{width:min(96vw,1600px);max-width:none;max-height:96vh;padding:12px;border:1px solid #536e63;background:var(--white);color:var(--ink)}dialog::backdrop{background:#10221de6}dialog img{display:block;width:100%;height:auto;max-height:80vh;object-fit:contain;background:#fff}dialog>button{display:block;margin:0 0 12px auto;background:none;border:1px solid var(--line);padding:6px 17px;cursor:pointer}dialog p{font-size:13px;margin:9px 0 0}footer{display:flex;align-items:center;gap:35px;border-top:1px solid var(--line);margin-top:70px;padding-top:28px;padding-bottom:35px;font-size:12px;color:var(--muted)}footer p{margin:0}footer>a:last-child{margin-left:auto}@media(max-width:900px){.site-header,main,footer{padding-left:25px;padding-right:25px}.article-grid{grid-template-columns:190px minmax(0,1fr);gap:30px}.article-header h1{font-size:38px}.toc{font-size:12px}}@media(max-width:650px){.site-header,main,footer{padding-left:20px;padding-right:20px}.top{height:76px}.brand{font-size:30px}.back{font-size:12px}.site-header>nav{gap:23px;font-size:13px;min-height:60px}.home-hero{padding:38px 0 30px}.home-hero h1{font-size:49px}.eyebrow{font-size:10px;margin-bottom:22px}.hero-bottom{display:block;margin:25px 0}.hero-bottom p{font-size:14px}.primary{margin-top:25px;justify-content:space-between;padding:14px 19px}.hero-meta{gap:12px;font-size:10px;justify-content:space-between}.section-head{padding:20px 0}.section-head h2{font-size:18px}.directory-row{grid-template-columns:30px 1fr 25px;gap:10px;padding:25px 0}.number{font-size:16px}.directory-row h3{font-size:25px}.directory-row p{font-size:13px}.label{font-size:11px}.arrow{font-size:24px}.download-list{grid-template-columns:1fr}.download-list a{font-size:14px}.download-list span{font-size:11px}.search-section,.downloads{margin-top:35px}.article-header{padding-top:30px}.article-header h1{font-size:34px;margin-bottom:22px}.article-grid{display:block}.toc{position:static;max-height:none;padding-top:18px;padding-bottom:10px;border-bottom:1px solid var(--line)}.toc details:not([open]){padding-bottom:8px}.toc a{font-size:13px}.toc nav{max-height:270px;overflow:auto}article{padding-top:5px}article>p{font-size:16px;line-height:2;text-align:left}article h2{font-size:24px;margin-top:35px}.table-scroll{margin:23px 0}table{font-size:13px}th,td{padding:11px 13px}.gallery{grid-template-columns:1fr;gap:24px}.gallery-bar{gap:10px;font-size:12px}.gallery-bar select{padding:8px;max-width:58%}.gallery figcaption{font-size:13px}.editor-note{margin:35px 0;padding-left:16px}footer{margin-top:40px;gap:20px;align-items:flex-start;flex-wrap:wrap}footer>a:last-child{margin-left:0}dialog{width:98vw;padding:8px}.article-end{gap:13px 20px}.article-tools{font-size:12px;gap:12px 20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}@media print{body{background:white}.site-header,.toc,.article-tools,.article-end,footer,.skip{display:none}main{padding:0;max-width:none}.article-grid{display:block}article{max-width:none}.article-header{padding:0;border:0}.article-header h1{font-size:25pt}.article-header .eyebrow{font-size:10pt}article>p{font-size:11pt;line-height:1.8}article h2{font-size:16pt;break-after:avoid}.table-scroll{overflow:visible}table{min-width:0;font-size:9pt}tr{break-inside:avoid}th{color:black;background:#ddd}a{text-decoration:none}}