:root{--paper:#f4f0e6;--white:#fffcf5;--ink:#1d2d2a;--muted:#57645d;--line:#d6d6c9;--jade:#126e65;--red:#a84631;--gold:#947125;--purple:#716484}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans CJK SC",sans-serif;font-size:17px;line-height:1.85}a{color:var(--jade);text-underline-offset:4px}a:hover{color:var(--red)}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--red);outline-offset:4px}button{background:transparent;border:1px solid #abb7ac;border-radius:4px;color:var(--jade);padding:5px 13px}button:hover{background:#e7eadf}.topbar{position:sticky;top:0;z-index:20;height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 4vw;background:rgba(244,240,230,.97);border-bottom:1px solid var(--line);font-size:13px}.brand{text-decoration:none;color:var(--ink);font-weight:700;letter-spacing:2px}.top-actions{display:flex;gap:22px;align-items:center}.top-actions a{text-decoration:none}.top-actions .status{color:var(--red)}.hero{max-width:1440px;margin:auto;padding:80px 6vw 56px;position:relative}.eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:650;color:var(--jade)}.hero h1{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(62px,7.5vw,112px);letter-spacing:.04em;margin:12px 0 6px;font-weight:800;line-height:1.2}.hero .subtitle{font-size:clamp(23px,2.5vw,36px);font-family:"Songti SC",serif;margin:12px 0 25px}.hero-copy{max-width:830px;font-size:19px}.hero .revision{font-size:14px;color:var(--muted);max-width:900px;margin-top:24px}.brushline{height:7px;width:155px;background:linear-gradient(90deg,#a74632 0 24%,#126e65 24% 53%,#ac8428 53% 78%,#786383 78%);margin-bottom:28px;transform:skewX(-15deg)}.overview{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:37px;border-top:1px solid var(--ink);border-bottom:1px solid var(--line)}.overview>div{padding:20px 22px 20px 0}.overview>div+div{border-left:1px solid var(--line);padding-left:24px}.overview b{display:block;font-size:19px}.overview p{font-size:14px;line-height:1.8;color:var(--muted);margin:8px 0}.book-nav{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;max-width:1440px;padding:22px 6vw 40px;margin:auto}.book-nav a{color:var(--ink);text-decoration:none;font-size:14px;border-bottom:1px solid var(--line);padding-bottom:12px}.book-nav span{display:block;color:var(--red);font-family:Georgia,serif;font-size:25px}.book{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:240px minmax(0,1fr);gap:46px;padding:0 4vw}.sidebar{position:sticky;top:82px;align-self:start;max-height:calc(100vh - 110px);overflow-y:auto;font-size:13px;padding:18px 15px 30px 0;scrollbar-width:thin}.sidebar details>summary{display:none}.toc-group{margin-bottom:24px}.toc-group b{display:block;font-size:12px;color:var(--red);margin:0 0 8px}.toc-group a{display:block;line-height:1.5;padding:5px 0;color:var(--muted);text-decoration:none}.toc-group a:hover,.toc-group a.active{color:var(--jade);font-weight:650}.content{min-width:0}.chapter{padding:50px 0 42px;border-top:1px solid var(--line);scroll-margin-top:16px}.chapter>header{display:flex;gap:20px;margin-bottom:30px}.chapter-no{font-family:Georgia,serif;font-size:32px;color:var(--red);line-height:1.55}.chapter h2{font-size:30px;line-height:1.45;margin:0 0 12px;font-family:"Songti SC","Noto Serif CJK SC",serif}.chapter h3{font-size:20px;margin:30px 0 12px;line-height:1.5}.chapter .lead{font-size:19px;line-height:1.75;margin:0;color:var(--jade)}.chapter p{margin:19px 0;overflow-wrap:anywhere}.chapter strong{font-weight:700}.table-wrap{overflow-x:auto;margin:24px 0 28px;overscroll-behavior-x:contain;scrollbar-width:thin}table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.85;min-width:660px}th{padding:13px 16px;text-align:left;background:#e5e8dc;border-top:1px solid #b6c2b1;border-bottom:1px solid #b6c2b1;font-size:13px;letter-spacing:.05em}td{padding:17px 16px;vertical-align:top;border-bottom:1px solid var(--line);overflow-wrap:anywhere}td:first-child{font-weight:650;width:23%;color:#263d35}td:last-child{color:#526052}tr:nth-child(even){background:#f9f6ee}.note{font-size:14px;line-height:1.9;margin:24px 0;padding:16px 20px;background:#eae9df;border-left:3px solid var(--gold);color:#525d50}.reference-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:30px}.reference-grid figure{margin:0;background:var(--white);border-bottom:1px solid #b6c2b1}.reference-grid img{width:100%;height:auto;aspect-ratio:600/338;object-fit:cover;display:block}.reference-grid figcaption{padding:20px}.reference-grid .eyebrow{letter-spacing:.05em;font-size:11px}.reference-grid h3{margin:8px 0;font-size:19px}.reference-grid p{font-size:14px;margin:10px 0}.reference-grid a{font-size:13px}.route-figure{margin:30px 0;background:#faf8f0;padding:18px;border:1px solid var(--line)}.route-figure svg{display:block;width:100%;height:auto}.route-figure figcaption{font-size:13px;color:var(--muted);margin-top:10px}.download{background:var(--jade);color:white;border:0;padding:12px 22px}.download:hover{background:#20564b}.search-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:26px 0}.search-row label{font-size:14px;font-weight:650}.search-row input{flex:1;min-width:180px;border:1px solid #9ba99a;background:var(--white);padding:10px 14px;border-radius:0;font-size:15px}.search-row output{font-size:14px}.requirement{border-bottom:1px solid var(--line)}.requirement summary{cursor:pointer;display:flex;gap:12px;align-items:baseline;padding:17px 0;font-size:15px;list-style:none}.requirement summary:before{content:'＋';color:var(--jade)}.requirement[open] summary:before{content:'−'}.req-id{color:var(--red);font-family:Georgia,serif}.requirement summary small{margin-left:auto;font-size:12px;color:var(--muted);max-width:34%;text-align:right}.req-body{padding:0 15px 15px 36px;font-size:14px}.source-buttons{display:flex;gap:7px;flex-wrap:wrap}.source-buttons button{font-size:12px;padding:2px 8px}.muted{color:var(--muted);font-size:13px}dialog{width:min(850px,calc(100% - 30px));max-height:85vh;border:1px solid #9ba99a;padding:30px;background:var(--white);color:var(--ink);overflow:auto}dialog::backdrop{background:rgba(10,25,22,.65)}dialog header{display:flex;justify-content:space-between;align-items:center;gap:15px;border-bottom:1px solid var(--line);padding-bottom:14px}dialog h2{margin:0;font-size:23px}#source-kind{color:var(--red);font-size:13px;margin:16px 0}#source-text{white-space:pre-wrap;font-size:16px;line-height:1.9;overflow-wrap:anywhere}#source-refs{font-size:12px;line-height:1.8;overflow-wrap:anywhere;color:var(--muted);white-space:pre-wrap;border-top:1px solid var(--line);padding-top:20px}footer{max-width:1440px;margin:auto;padding:40px 6vw 70px;font-size:13px;color:var(--muted);border-top:1px solid var(--line)}[hidden]{display:none!important}.print-only{display:none}noscript{display:block;background:#f4e1c9;padding:20px}.print-button{font-size:12px;padding:3px 10px}@media(min-width:1800px){body{font-size:18px}.book{gap:60px}}@media(max-width:1100px){.book{grid-template-columns:190px minmax(0,1fr);gap:25px;padding:0 3vw}.hero{padding-top:52px}.chapter h2{font-size:27px}.reference-grid{gap:14px}}@media(max-width:800px){html{scroll-padding-top:70px}.topbar{height:56px;padding:0 20px}.top-actions{gap:13px}.top-actions .status{display:none}.hero{padding:40px 22px 25px}.hero-copy{font-size:17px}.hero .subtitle{font-size:24px}.hero .revision{font-size:12px}.overview{grid-template-columns:1fr;margin-top:25px}.overview>div,.overview>div+div{padding:15px 0;border-left:none}.overview>div+div{border-top:1px solid var(--line)}.overview p{margin:5px 0}.book-nav{grid-template-columns:repeat(3,1fr);padding:10px 22px 30px;gap:17px}.book-nav a{font-size:12px}.book{display:block;padding:0 22px}.sidebar{position:static;max-height:none;padding:0 0 20px}.sidebar details>summary{display:block;cursor:pointer;font-size:14px;font-weight:650;border:1px solid var(--line);padding:10px 14px}.sidebar details .toc-inner{padding:20px;border:1px solid var(--line);border-top:0;columns:2}.toc-group{break-inside:avoid}.chapter{padding:35px 0 28px}.chapter>header{gap:12px;margin-bottom:22px}.chapter-no{font-size:26px}.chapter h2{font-size:25px}.chapter .lead{font-size:17px}.chapter p{font-size:16px}.note{font-size:13px;padding:14px}.reference-grid{grid-template-columns:1fr}.reference-grid p{font-size:14px}.table-wrap{margin:22px -5px}table{font-size:14px;min-width:680px}th,td{padding:13px}.route-figure{padding:12px;overflow-x:auto}.route-figure svg{min-width:640px}.route-figure figcaption{min-width:0}.requirement summary{flex-wrap:wrap;gap:8px}.requirement summary small{margin-left:33px;max-width:100%;width:100%;text-align:left}.req-body{padding-left:12px}.search-row input{width:100%}dialog{padding:20px}footer{padding:30px 22px 50px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{body{background:white;font-size:10pt}.topbar,.sidebar,.book-nav,.search-row,.download,.print-button{display:none}.hero{padding:0 0 25px}.hero h1{font-size:48pt}.hero .subtitle{font-size:22pt}.book{display:block;padding:0}.chapter{padding:24px 0;break-before:auto}.chapter>header{break-after:avoid}.chapter h2{font-size:20pt}.chapter .lead{font-size:12pt}table{min-width:0;font-size:9pt}.table-wrap{overflow:visible}tr,figure,.note{break-inside:avoid}td,th{padding:8px}.reference-grid{grid-template-columns:1fr 1fr}.requirement{display:block!important}.req-body{display:block}.chapter p{font-size:10pt}a{color:inherit}.print-only{display:block}.route-figure svg{min-width:0}.top-actions{display:none}footer{padding:15px 0}details:not([open])>*:not(summary){display:block}.source-buttons button{border:none;font-size:8pt;padding:0 4px}dialog{display:none}}
#phrase table th:first-child,#phrase table td:first-child{width:10%}#phrase table th:nth-child(2){width:22%}#phrase table th:nth-child(3),#phrase table th:nth-child(4){width:34%}@media(max-width:800px){.table-wrap:before{content:'表格可横向滑动 →';display:block;position:sticky;left:0;font-size:12px;color:var(--muted);margin:0 5px 8px}}