:root{--pine:#234c43;--leaf:#dce7dd;--linen:#f8faf6;--charcoal:#20362f;--quiet:#56665e;--border:#c7d2c9;--accent:#356c51}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--charcoal);background:var(--linen);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.85}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.4;font-weight:600}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--accent)}a:focus-visible,summary:focus-visible{outline:3px solid #a66433;outline-offset:5px}p{color:var(--quiet)}.measure{width:min(1160px,calc(100% - 80px));margin:auto}.mast{border-bottom:1px solid var(--border)}.mast-row{min-height:86px;display:flex;align-items:center;justify-content:space-between;gap:20px}.mast-row>a,.mast-row>span{display:flex;align-items:center;gap:14px;text-decoration:none}.mast-row b{font-size:27px;letter-spacing:2px}.mast-row small{font-size:10px;letter-spacing:2px;border-left:1px solid var(--border);padding-left:15px}.mast nav{display:flex;gap:30px;font-size:14px}.mast nav a{text-decoration:none;display:inline-block;padding:12px 0}.mast [aria-current]{font-weight:700}.jump-main{position:absolute;left:-9999px}.jump-main:focus{left:20px;top:10px;background:white;padding:12px;z-index:4}.welcome{background:var(--leaf);padding:64px 0 47px;text-align:center}.overline{font-size:12px;letter-spacing:2px;color:var(--accent);margin-bottom:16px}.welcome h1{font-size:60px;letter-spacing:5px}.welcome .tagline{font-size:25px;line-height:1.6;color:var(--pine);margin:12px 0 18px}.welcome .intro{max-width:650px;margin:auto;font-size:15px}.welcome-links{display:flex;justify-content:center;gap:14px;margin-top:26px}.action{background:var(--pine);color:white;display:inline-flex;align-items:center;min-height:48px;padding:10px 24px;text-decoration:none;font-size:14px;border:1px solid var(--pine)}.action:hover{background:#346653;color:white}.action.secondary{background:transparent;color:var(--pine)}.photo-strip{background:var(--leaf);padding:0 0 24px}.photo-strip img{display:block;width:100%;height:430px;object-fit:cover;object-position:50% 60%}.photo-strip figcaption{font-size:11px;letter-spacing:1px;padding-top:10px;color:var(--quiet)}.chapter{padding:76px 0}.chapter-head{display:flex;justify-content:space-between;gap:60px;align-items:end;margin-bottom:35px}.chapter-head h2{font-size:35px;max-width:600px}.chapter-head>p{max-width:370px;font-size:15px}.stage-rail{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--pine)}.stage-rail>div{padding:27px 28px 20px 0}.stage-rail>div+div{border-left:1px solid var(--border);padding-left:28px}.stage-label{font-size:12px;letter-spacing:1px;color:var(--accent)}.stage-rail h3{font-size:22px;margin:10px 0}.stage-rail p{font-size:15px}.stage-rail a{display:inline-block;min-height:44px;padding-top:16px;font-size:13px}.file-section{background:#edf1e9}.reference-table{border-collapse:collapse;width:100%;font-size:15px}.reference-table th{text-align:left;color:var(--pine);font-weight:500;font-size:13px;border-bottom:2px solid var(--pine);padding:14px 22px}.reference-table td{border-bottom:1px solid var(--border);padding:22px;vertical-align:top}.reference-table td:first-child{width:23%;font-weight:600;color:var(--pine)}.table-note{font-size:13px;margin:20px 0}.text-link{display:inline-block;min-height:44px;padding-top:8px;font-size:14px}.journal{display:grid;grid-template-columns:1fr 1fr;gap:50px}.journal-item{padding:26px 0 15px;border-top:1px solid var(--border)}.note-topic{font-size:11px;letter-spacing:1px;color:var(--accent)}.journal-item h3{font-size:24px;margin:15px 0 20px;font-weight:500}.journal-item h3 a{text-decoration:none;display:block}.journal-item h3 a:hover{text-decoration:underline}.journal-item p{font-size:14px}.tail{border-top:1px solid var(--border);padding:38px 0;background:var(--leaf)}.tail-row{display:flex;justify-content:space-between;gap:40px}.tail strong{font-size:23px}.tail p{font-size:12px;margin-top:6px}.tail a,.tail span{font-size:13px;display:inline-block;min-height:30px}.paper{width:min(820px,calc(100% - 80px));margin:0 auto;padding:30px 0 80px}.crumb{display:flex;flex-wrap:wrap;gap:18px;font-size:12px;color:var(--quiet);padding:10px 0 30px}.crumb span{border-left:1px solid var(--border);padding-left:18px}.paper-title{margin-bottom:34px;border-bottom:1px solid var(--border);padding-bottom:34px}.paper-title h1{font-size:42px;margin-bottom:22px}.standfirst{font-size:20px;line-height:1.8;color:var(--pine)}.explanation h2,.note-body h2{font-size:27px;margin:38px 0 20px}.explanation p,.note-body p{font-size:17px;line-height:2;margin-bottom:22px}.explanation li,.note-body li{margin:12px 0}.explanation ul,.note-body ul{padding-left:24px}.help-route{padding:22px 26px;background:var(--leaf);margin:28px 0}.help-route p:last-child{margin:0}.help-route h3{font-size:20px;margin-bottom:14px}.related-reading{margin-top:40px;padding-top:22px;border-top:1px solid var(--border);display:flex;flex-direction:column;align-items:flex-start;gap:12px}.related-reading a{display:block;min-height:44px;line-height:1.8;padding:8px 0;font-size:15px}.meta-line{font-size:12px;margin:22px 0 0;color:var(--quiet)}.article-index{padding:55px 0 80px}.article-index h1{font-size:42px;margin-bottom:22px}.article-index>p{max-width:700px;margin-bottom:35px}.note-body section{margin-bottom:35px}.no-service{padding:50px 0}.no-service h1{font-size:32px;margin-bottom:24px}.no-service p{margin-bottom:22px}
@media(max-width:760px){.measure{width:calc(100% - 36px)}.mast-row{min-height:106px;display:block;padding:16px 0 8px}.mast-row>a,.mast-row>span{justify-content:center}.mast-row b{font-size:23px}.mast-row small{font-size:9px}.mast nav{justify-content:center;gap:26px;margin-top:8px;font-size:12px}.mast nav a{padding:5px 0}.welcome{padding:36px 0 30px}.overline{font-size:10px;margin-bottom:13px}.welcome h1{font-size:44px;letter-spacing:4px}.welcome .tagline{font-size:21px;margin:10px 0 15px}.welcome .intro{font-size:14px}.welcome-links{margin-top:21px;gap:10px}.action{font-size:13px;padding:9px 17px;min-height:46px}.photo-strip img{height:250px;object-position:47% 60%}.photo-strip figcaption{font-size:10px}.photo-strip{padding-bottom:18px}.chapter{padding:43px 0}.chapter-head{display:block;margin-bottom:25px}.chapter-head h2{font-size:28px;margin-bottom:16px}.chapter-head>p{font-size:14px}.stage-rail{display:block}.stage-rail>div,.stage-rail>div+div{padding:22px 0;border-left:0;border-bottom:1px solid var(--border)}.stage-rail h3{font-size:22px;margin:8px 0}.stage-rail p{font-size:14px}.reference-table{font-size:13px}.reference-table th{padding:12px 8px;font-size:12px}.reference-table td{padding:17px 8px}.reference-table td:first-child{width:25%}.reference-table th:last-child,.reference-table td:last-child{width:33%}.table-note{font-size:12px}.journal{grid-template-columns:1fr;gap:15px}.journal-item{padding:22px 0}.journal-item h3{font-size:23px}.tail-row{display:block}.tail-row>div+div{margin-top:22px}.tail{padding:28px 0}.paper{width:calc(100% - 38px);padding:20px 0 45px}.paper-title h1{font-size:31px}.paper-title{padding-bottom:25px;margin-bottom:25px}.standfirst{font-size:18px}.crumb{padding-bottom:25px;font-size:11px}.explanation h2,.note-body h2{font-size:24px;margin:30px 0 18px}.explanation p,.note-body p{font-size:16px}.help-route{padding:20px;margin:23px 0}.article-index{padding:35px 0 40px}.article-index h1{font-size:31px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}