*{box-sizing:border-box}
html{color-scheme:light}
body{--navy:#102a50;--blue:#0b61e8;--muted:#5c718a;--line:#d8e3ef;--soft:#f3f7fc;--green:#138a61;--red:#c94848;margin:0;background:#fff;color:var(--navy);font-family:"Segoe UI Variable Text","Segoe UI","Microsoft YaHei UI",sans-serif}
.top{display:grid;grid-template-columns:minmax(250px,1fr) auto minmax(250px,1fr);align-items:center;min-height:64px;border-bottom:1px solid var(--line);background:#fff;padding:7px clamp(18px,3vw,36px);color:var(--navy)}
.top-brand{display:flex;align-items:center;gap:18px;min-width:0}
.top-brand strong{color:var(--blue);font-size:19px;white-space:nowrap}
.top-brand span{overflow:hidden;border-left:1px solid var(--line);padding-left:18px;color:#405b79;font-size:13px;text-overflow:ellipsis;white-space:nowrap}
.mode-tabs{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.mode-tabs>*{display:flex;align-items:center;justify-content:center;min-width:76px;min-height:44px;border-right:1px solid var(--line);padding:0 14px;color:#536b85;font-size:13px;text-decoration:none}
.mode-tabs>*:last-child{border-right:0}
.mode-tabs strong{background:var(--blue);color:#fff;font-size:13px}
.mode-tabs span{color:#8b99aa}
.top-safe{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.top-safe span{border:1px solid #cfe5da;border-radius:18px;background:#f1faf6;padding:7px 12px;color:#28624e;font-size:12px;white-space:nowrap}
.top-safe a{display:flex;align-items:center;min-height:44px;color:var(--blue);font-size:12px;text-decoration:none}
.legacy-title{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
main{max-width:1500px;margin:auto;padding:18px 20px 34px}
.intro{display:flex;align-items:center;justify-content:space-between;gap:28px}
.intro h1{margin:0;font-size:30px;letter-spacing:-.025em}
.intro p{max-width:850px;margin:8px 0 0;color:#344f6d;font-size:13px;line-height:1.7}
.intro-detail{max-width:850px;margin-top:5px}
.intro-detail summary,.coverage-detail>summary,.principle-card summary,.boundary-detail>summary,.evidence-lab>header details>summary{display:flex;align-items:center;min-height:44px;color:var(--blue);font-size:12px;font-weight:800;cursor:pointer}
.intro-detail p{margin-top:0!important;border-left:3px solid #b9d2f5;background:#f5f9ff;padding:9px 12px;font-size:12px!important}
.intro aside{display:grid;min-width:340px;border:1px solid var(--line);border-radius:5px;padding:13px 18px}
.intro aside span{color:var(--muted);font-size:12px}
.intro aside strong{margin-top:5px;font-size:14px}
.intro aside small{margin-top:5px;color:var(--muted);font-size:12px}
.acceptance-relay{margin-top:14px;border:1px solid var(--line);border-radius:5px;background:#fff}
.acceptance-relay>header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 18px;border-bottom:1px solid var(--line)}
.acceptance-relay>header div{display:grid;gap:4px}
.acceptance-relay>header span{color:var(--blue);font-size:12px;font-weight:750}
.acceptance-relay h2{margin:0;font-size:20px;letter-spacing:-.015em}
.acceptance-relay>header p{max-width:610px;margin:0;color:var(--muted);font-size:12px;line-height:1.6}
.relay-gate{display:grid;grid-template-columns:minmax(270px,1fr) auto minmax(340px,1.1fr);align-items:center;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line)}
.relay-gate label{display:grid;gap:3px;font-size:12px}
.relay-gate label span{color:var(--muted);font:12px "Cascadia Mono",Consolas,monospace}
.relay-gate input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.relay-gate button{min-height:44px;border:1px solid var(--blue);border-radius:5px;background:var(--blue);padding:0 16px;color:#fff;font:750 12px inherit;cursor:pointer}
.relay-gate p{margin:0;border-left:3px solid #a7b9cc;background:var(--soft);padding:9px 12px;color:var(--muted);font-size:12px;line-height:1.5}
.relay-gate p.pass{border-left-color:var(--green);background:#eff8f4;color:#356654}
.relay-gate p.fail{border-left-color:var(--red);background:#fff3f3;color:#8e3535}
.relay-evidence{display:grid;grid-template-columns:1fr 1fr minmax(245px,.8fr);border-bottom:1px solid var(--line)}
.relay-evidence article{display:grid;grid-template-columns:38px 1fr;align-items:center;gap:10px;min-height:86px;border-right:1px solid var(--line);padding:13px 18px;color:#7a8b9d}
.relay-evidence article>b{display:grid;place-items:center;width:34px;height:34px;border:2px solid currentColor;border-radius:50%;font-size:12px}
.relay-evidence article div,.relay-evidence aside{display:grid;gap:5px}
.relay-evidence article strong{font-size:13px}
.relay-evidence article span,.relay-evidence aside span{font-size:12px}
.relay-evidence article.passed{background:#f0f8f5;color:#25634d}
.relay-evidence aside{align-content:center;padding:12px 18px;background:#f7faff}
.relay-evidence aside span{color:var(--muted)}
.relay-evidence code{overflow-wrap:anywhere;color:#294969;font:12px "Cascadia Mono",Consolas,monospace}
.coverage-detail>summary{padding:0 18px}
.coverage-detail[open]>summary{border-bottom:1px solid var(--line)}
.module-coverage{display:grid;grid-template-columns:repeat(5,1fr);margin:0;padding:0;list-style:none}
.module-coverage li{display:grid;grid-template-columns:30px 1fr;align-items:center;gap:8px;min-width:0;min-height:88px;border-right:1px solid var(--line);padding:11px 12px;color:#7b8da0}
.module-coverage li:last-child{border-right:0}
.module-coverage li>b{grid-row:1/3;display:grid;place-items:center;width:27px;height:27px;border-radius:50%;background:#e8eef4;font-size:12px}
.module-coverage li div{display:grid;gap:3px;min-width:0}
.module-coverage strong{font-size:12px}
.module-coverage span{font-size:12px;line-height:1.45}
.module-coverage em{grid-column:2;color:var(--blue);font-size:12px;font-style:normal;font-weight:750}
.module-coverage li.ready{color:#294969}
.module-coverage li.ready>b{background:var(--blue);color:#fff}
.step-rail{display:grid;grid-template-columns:repeat(4,1fr);margin-top:14px;border:1px solid var(--line);border-radius:5px}
.step-rail button{position:relative;display:grid;grid-template-columns:42px 1fr;align-items:center;min-height:72px;border:0;border-right:1px solid var(--line);background:#fff;padding:10px 18px;color:#8795a6;text-align:left}
.step-rail button:last-child{border-right:0}
.step-rail b{grid-row:1/3;display:grid;place-items:center;width:38px;height:38px;border:2px solid currentColor;border-radius:50%;font-size:13px}
.step-rail strong{font-size:14px}
.step-rail span{font-size:12px}
.step-rail button.done,.step-rail button.active{color:var(--blue)}
.step-rail button.done:after{content:"";position:absolute;left:62px;right:0;bottom:12px;height:2px;background:var(--blue)}
.workbench-context{display:grid;grid-template-columns:220px minmax(560px,1fr) 300px;align-items:stretch;margin-top:8px;border:1px solid var(--line);border-radius:5px;background:#fff;overflow:hidden}
.workbench-context header{display:grid;align-content:center;gap:4px;border-right:1px solid var(--line);padding:12px 16px}
.workbench-context header span{color:var(--blue);font-size:12px;font-weight:750}
.workbench-context header strong{font-size:16px}
.workbench-context header code{color:var(--muted);font:12px "Cascadia Mono",Consolas,monospace}
.workbench-context ol{display:grid;grid-template-columns:repeat(4,1fr);margin:0;padding:0;list-style:none}
.workbench-context li{position:relative;display:grid;align-content:center;gap:4px;min-width:0;border-right:1px solid var(--line);padding:12px 18px}
.workbench-context li:not(:last-child):after{content:"";position:absolute;z-index:1;right:-5px;top:calc(50% - 4px);width:8px;height:8px;border-top:1px solid #8ca3bb;border-right:1px solid #8ca3bb;background:#fff;transform:rotate(45deg)}
.workbench-context li b{color:var(--muted);font-size:12px}
.workbench-context li span{overflow-wrap:anywhere;color:#284765;font-size:12px;font-weight:750}
.workbench-context>p{display:grid;align-content:center;margin:0;background:#f3f8ff;padding:12px 16px;color:#476684;font-size:12px;line-height:1.55}
.workbench{display:grid;grid-template-columns:195px 205px minmax(420px,1.3fr) minmax(285px,.85fr);min-height:370px;margin-top:8px;border:1px solid var(--line);border-radius:5px}
.workbench>*{min-width:0;border-right:1px solid var(--line)}
.workbench>*:last-child{border-right:0}
.module-nav header{display:grid;padding:10px 15px;border-bottom:1px solid var(--line)}
.module-nav header strong{font-size:12px}
.module-nav header span{margin-top:4px;color:var(--muted);font-size:12px}
.module-nav nav{display:grid;padding:5px}
.module-nav button{display:grid;grid-template-columns:30px 1fr;min-height:50px;border:0;border-left:3px solid transparent;background:#fff;padding:6px 9px;color:var(--navy);text-align:left;cursor:pointer}
.module-nav button b{grid-row:1/3;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#6f7f90;color:#fff;font-size:12px}
.module-nav button strong{font-size:12px}
.module-nav button span{color:var(--muted);font:12px/1.4 "Cascadia Mono",Consolas,monospace}
.module-nav button.active{border-left-color:var(--blue);background:#eaf3ff;color:var(--blue)}
.module-nav button.active b,.module-nav button.done b{background:var(--blue)}
.module-nav footer{display:grid;margin:4px 6px;border-top:1px solid var(--line);padding:8px}
.module-nav footer strong{font-size:12px}
.module-nav footer span{margin-top:4px;color:var(--muted);font-size:12px}
.brief{padding:16px}
.brief header{display:grid}
.brief header span,.brief section span,.editor header span,.validation header span,.evidence-lab>header span{color:var(--muted);font-size:12px}
.brief header strong{margin-top:5px;font-size:14px}
.brief>p{margin:13px 0;color:#344f6d;font-size:12px;line-height:1.65}
.brief section{display:grid;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0}
.brief code{margin-top:8px;overflow-wrap:anywhere;border:1px solid #f1a2a2;border-radius:4px;background:#fff4f4;padding:10px;color:#c62f2f;font:12px/1.5 "Cascadia Mono",Consolas,monospace}
.brief h2{margin:15px 0 0;font-size:13px}
.brief .principle-card{margin-top:14px;border:1px solid #bdd3f1;border-radius:5px;background:#f4f8ff;padding:0 12px}
.principle-card summary{display:grid;gap:3px;min-height:56px}
.principle-card summary span{color:var(--blue);font-size:12px;font-weight:800}
.principle-card summary strong{color:var(--navy);font-size:13px;line-height:1.45}
.principle-card p{margin:7px 0;color:#405f7e;font-size:12px;line-height:1.6}
.principle-card a{min-height:44px;margin-top:0;border-top:1px solid #d3e1f3}
.brief a{display:flex;align-items:center;min-height:44px;margin-top:14px;border-top:1px solid var(--line);color:var(--blue);font-size:12px;font-weight:750;text-decoration:none}
.editor{display:grid;grid-template-rows:auto auto 1fr auto;background:#102337}
.editor header{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:#fff}
.editor header div{display:grid}
.editor header strong{margin-top:4px;font:12px "Cascadia Mono",Consolas,monospace}
.editor header small{color:var(--muted);font-size:12px}
.editor label{background:#172f48;padding:8px 14px;color:#b5cae0;font-size:12px}
.codebox{display:grid;grid-template-columns:38px 1fr;min-height:200px;background:#102337}
.codebox ol{margin:0;border-right:1px solid #28445f;padding:16px 8px 16px 0;color:#7890a8;font:12px/1.7 "Cascadia Mono",Consolas,monospace;text-align:right;list-style:none}
.codebox li{height:20.4px}
.editor textarea{width:100%;min-height:200px;resize:vertical;border:0;outline:0;background:#102337;padding:16px 12px;color:#dceeff;font:12px/1.7 "Cascadia Mono",Consolas,monospace;tab-size:4}
.editor textarea:focus{box-shadow:inset 0 0 0 2px #6da8ff}
.editor footer{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:7px;background:#fff;padding:9px 12px}
.editor footer span{color:var(--muted);font-size:12px}
.editor button,.validation button,.evidence-lab button{min-height:44px;border:1px solid #8eb2ed;border-radius:5px;background:#fff;padding:0 13px;color:var(--blue);font:750 10px inherit;cursor:pointer}
.editor button:last-child,.evidence-lab button:not(:disabled){border-color:var(--blue);background:var(--blue);color:#fff}
.validation{padding:14px}
.validation header{display:flex;align-items:center;justify-content:space-between;gap:8px}
.validation header div{display:grid}
.validation header strong{margin-top:4px;font-size:13px}
.validation header button{border:0;padding:0;font-size:12px}
.validation>p{border-left:3px solid var(--blue);background:var(--soft);padding:9px;color:#425f7d;font-size:12px;line-height:1.6}
.check-list{display:grid;margin-top:13px;border:1px solid var(--line)}
.check-list p{display:grid;grid-template-columns:22px 1fr;align-items:center;min-height:45px;margin:0;border-bottom:1px solid var(--line);padding:7px 10px;color:#405c79;font-size:12px}
.check-list p:last-child{border-bottom:0}
.check-list i{display:grid;place-items:center;width:17px;height:17px;border-radius:50%;background:#edf2f7;color:#74899f;font-style:normal}
.check-list p.pass i{background:#daf2e7;color:var(--green)}
.check-list p.fail i{background:#ffe1e1;color:var(--red)}
#validation-result{margin-top:13px;border:1px solid #9bbcf0;background:#f3f8ff;color:#385d85}
.boundary-detail{margin-top:8px;border-top:1px solid var(--line)}
.boundary-detail>summary{min-height:44px}
.validation dl{display:grid;grid-template-columns:repeat(3,1fr);margin:0 0 4px;border:1px solid var(--line)}
.validation dl div{display:grid;border-right:1px solid var(--line);padding:9px;text-align:center}
.validation dl div:last-child{border-right:0}
.validation dt{color:var(--muted);font-size:12px}
.validation dd{margin:4px 0 0;font-size:12px;font-weight:800}
.evidence-lab{margin-top:8px;border:1px solid var(--line);border-radius:5px}
.evidence-lab>header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:9px 16px;border-bottom:1px solid var(--line)}
.evidence-lab>header>div{display:flex;align-items:center;gap:14px}
.evidence-lab h2{margin:0;font-size:17px}
.evidence-lab>header details{max-width:610px}
.evidence-lab>header details>summary{justify-content:flex-end;text-align:right}
.evidence-lab>header p{margin:0 0 5px;color:var(--muted);font-size:12px;line-height:1.6}
.evidence-grid{display:grid;grid-template-columns:230px 230px minmax(360px,1fr) 285px}
.evidence-grid>section,.evidence-grid>form{min-width:0;border-right:1px solid var(--line);padding:14px}
.evidence-grid>*:last-child{border-right:0}
.evidence-grid h3{margin:0 0 11px;font-size:12px}
.evidence-grid dl{margin:0}
.evidence-grid dl div{display:flex;justify-content:space-between;gap:12px;min-height:34px;border-bottom:1px solid var(--line);padding:8px 0}
.evidence-grid dt{color:var(--muted);font-size:12px}
.evidence-grid dd{margin:0;font:12px "Cascadia Mono",Consolas,monospace}
.mock-input button{width:100%;margin-top:12px}
.mock-input button:disabled,.evidence-question button:disabled{border-color:#c7d2df;background:#e9eef4;color:#8b9bad;cursor:not-allowed}
.mock-input p{color:var(--blue);font-size:12px}
.trace ol{max-height:150px;margin:0;padding:0;border:1px solid var(--line);list-style:none;overflow:auto}
.trace li{display:grid;grid-template-columns:22px 1fr;min-height:34px;border-bottom:1px solid var(--line);padding:8px 9px;color:#405c79;font:12px "Cascadia Mono",Consolas,monospace;cursor:pointer}
.trace li:last-child{border-bottom:0}
.trace li.active{background:#eaf3ff;color:var(--blue)}
.trace li b{font-family:inherit}
.trace>p{margin:8px 0 0;color:var(--blue);font-size:12px}
.evidence-question fieldset{margin:0;border:0;padding:0}
.evidence-question legend{font-size:12px;font-weight:750;line-height:1.5}
.evidence-question label{display:flex;align-items:center;min-height:44px;border-bottom:1px solid var(--line);color:#405c79;font-size:12px;line-height:1.4;cursor:pointer}
.evidence-question input{width:17px;height:17px;margin:0 8px 0 0;accent-color:var(--blue)}
.module-explanation{display:grid!important;gap:6px;align-items:stretch!important;margin-top:10px;border:0!important}
.module-explanation span{display:flex;justify-content:space-between;color:var(--navy);font-size:12px;font-weight:800}
.module-explanation small{color:var(--blue);font-size:12px}
.module-explanation textarea{box-sizing:border-box;width:100%;min-height:92px;resize:vertical;border:1px solid var(--line);border-radius:5px;background:#fbfdff;padding:9px;color:#294969;font:12px/1.6 "Segoe UI Variable Text","Segoe UI","Microsoft YaHei UI",sans-serif}
.module-explanation textarea:focus{outline:2px solid #8ebafd;outline-offset:1px;border-color:var(--blue)}
.module-explanation textarea:disabled{background:#eef2f6;color:#8595a6}
.evidence-question button{margin-top:10px}
.evidence-question>p{min-height:35px;margin:8px 0 0;border-left:3px solid #a7b9cc;background:var(--soft);padding:8px;color:var(--muted);font-size:12px;line-height:1.5}
.evidence-question>p.pass{border-left-color:var(--green);background:#eff8f4;color:#356654}
.evidence-question>p.fail{border-left-color:#d58c27;background:#fff8ed;color:#76521f}
.cause-strip{display:grid;grid-template-columns:repeat(5,1fr);margin:0;border-top:1px solid var(--line);padding:12px 16px;list-style:none}
.cause-strip li{position:relative;display:grid;place-items:center;min-height:52px;border:1px solid var(--line);padding:8px;color:#294969;font-size:12px;text-align:center}
.cause-strip li+li{margin-left:22px}
.cause-strip li+li:before{content:"→";position:absolute;left:-18px;color:#8da3b9}
.cause-strip li.fault{border-color:#ed9999;background:#fff4f4;color:#b93838}
.developer-note{display:grid;grid-template-columns:1fr 1.5fr 260px;align-items:center;gap:18px;margin-top:8px;border:1px solid var(--line);padding:16px}
.developer-note>div>span{color:var(--blue);font-size:12px;font-weight:800}
.developer-note h2{margin:5px 0 0;font-size:17px}
.developer-note p{margin:7px 0 0;color:var(--muted);font-size:12px;line-height:1.55}
.developer-note ol{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:0;padding:0;list-style:none}
.developer-note li{display:grid;place-items:center;min-height:48px;border:1px solid var(--line);background:var(--soft);color:var(--muted);font-size:12px;text-align:center}
.developer-note li.ready{border-color:#88c6ae;background:#eef8f4;color:#28624e;font-weight:800}
.developer-note aside{display:grid;gap:7px;text-align:center}
.developer-note aside>strong{color:var(--blue);font-size:12px}
.developer-note button{min-height:44px;border:1px solid var(--blue);border-radius:5px;background:var(--blue);color:#fff;font-size:12px;font-weight:800;cursor:pointer}
.developer-note button:disabled{border-color:#d7e1ea;background:#eef2f5;color:#8b9baa;cursor:not-allowed}
.developer-note aside>small{color:var(--muted);font-size:12px}
.next{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:8px;border:1px solid var(--line);padding:16px}
.next h2{margin:0;font-size:18px}
.next p{margin:7px 0 0;color:var(--muted);font-size:12px}
.next a{display:flex;align-items:center;justify-content:center;min-height:44px;border:1px solid var(--blue);border-radius:5px;background:var(--blue);padding:0 16px;color:#fff;font-size:12px;font-weight:750;text-decoration:none}
.boundary{display:grid;grid-template-columns:repeat(7,1fr);border-top:1px solid var(--line);padding:13px clamp(18px,3vw,36px);color:#415a75;font-size:12px;text-align:center}
.boundary span{border-right:1px solid var(--line)}
.boundary strong{color:#d92727}
@media(max-width:1100px){.top{grid-template-columns:1fr auto}.mode-tabs{grid-row:2;grid-column:1/-1;justify-self:center;margin-top:6px}.top-safe span{display:none}.workbench{grid-template-columns:185px 210px 1fr}
.workbench-context{grid-template-columns:190px 1fr}.workbench-context>p{grid-column:1/-1;border-top:1px solid var(--line)}
.relay-gate{grid-template-columns:1fr auto}.relay-gate p{grid-column:1/-1}.relay-evidence{grid-template-columns:1fr 1fr}.relay-evidence aside{grid-column:1/-1}.module-coverage{overflow:auto;grid-template-columns:repeat(5,220px)}
.validation{grid-column:2/-1;border-top:1px solid var(--line)}
.evidence-grid{grid-template-columns:1fr 1fr}
.evidence-grid>*{border-bottom:1px solid var(--line)}
.cause-strip{overflow:auto;grid-template-columns:repeat(5,180px)}
.developer-note{grid-template-columns:1fr}
.developer-note ol{grid-template-columns:repeat(5,1fr)}
}
@media(max-width:700px){.top{grid-template-columns:1fr;gap:6px;padding:8px 12px}.top-brand{justify-content:space-between}.top-brand strong{font-size:16px}.top-brand span{max-width:190px;padding-left:10px;font-size:12px}.top-safe{grid-row:2;justify-content:space-between}.top-safe span{display:block;padding:5px 9px}.mode-tabs{grid-row:3;grid-column:1;width:100%;margin:0}.mode-tabs>*{flex:1;min-width:0;padding:0 8px}.top-safe a{font-size:12px}
main{padding:14px 10px 28px}
.intro{display:block}
.intro h1{font-size:28px}
.intro aside{min-width:0;margin-top:14px}
.acceptance-relay>header{display:block}.acceptance-relay>header p{margin-top:8px}.relay-gate{display:block}.relay-gate button{width:100%;margin:10px 0}.relay-evidence{display:block}.relay-evidence article{border-right:0;border-bottom:1px solid var(--line)}.coverage-detail{overflow:hidden}.module-coverage{overflow:auto;grid-template-columns:repeat(5,220px)}
.step-rail{overflow:auto;grid-template-columns:repeat(4,170px)}
.workbench-context{display:block}.workbench-context header{border-right:0;border-bottom:1px solid var(--line)}.workbench-context ol{grid-template-columns:1fr 1fr}.workbench-context li{min-height:74px;border-bottom:1px solid var(--line)}.workbench-context li:nth-child(2){border-right:0}.workbench-context li:not(:last-child):after{display:none}.workbench-context>p{border-top:0}
.workbench{display:block}
.workbench>*{border-right:0;border-bottom:1px solid var(--line)}
.module-nav nav{display:flex;overflow:auto}
.module-nav button{min-width:160px}
.editor footer{grid-template-columns:1fr 1fr}
.editor footer span{grid-column:1/-1}
.codebox,.editor textarea{min-height:280px}
.validation{display:block}
.evidence-lab>header{display:block}
.evidence-lab>header details{max-width:none;margin-top:4px}.evidence-lab>header details>summary{justify-content:flex-start;text-align:left}.evidence-lab>header p{margin-top:0}
.evidence-grid{display:block}
.evidence-grid>section,.evidence-grid>form{border-right:0;border-bottom:1px solid var(--line)}
.developer-note ol{overflow:auto;grid-template-columns:repeat(5,130px)}
.next{display:block}
.next a{margin-top:12px}
.boundary{grid-template-columns:repeat(2,1fr);gap:8px}
.boundary span{border:0}
.boundary strong{grid-column:1/-1}
}