@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;700&family=Noto+Sans+JP:wght@400;500;700;800&display=swap');

:root{--ink:#0d0d0d;--paper:#f5f5f0;--sub:#55534c;--soft:#cfcdc2;--chipbg:#e9e7dd}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN",sans-serif;background:var(--paper);color:var(--ink);line-height:1.8;font-size:15px}
a{color:inherit;text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 32px}
.stripes{height:10px;background:repeating-linear-gradient(-45deg,var(--ink) 0 5px,transparent 5px 11px)}

header{border-bottom:1.5px solid var(--ink)}
.hrow{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:18px;padding-bottom:18px;flex-wrap:wrap}
.site-title{font-size:16px;font-weight:800}
nav{display:flex;gap:14px;font-size:12px;flex-wrap:wrap;font-family:"IBM Plex Mono","Noto Sans JP",monospace}
nav a{padding:1px 5px}
nav a:hover{background:var(--ink);color:var(--paper)}

.hero{padding-top:48px;padding-bottom:40px}
.hero p.lead{font-size:16px;font-weight:700;max-width:780px}
.cta{display:inline-block;background:var(--ink);color:var(--paper);border:1.5px solid var(--ink);font-size:14px;font-weight:700;padding:12px 22px;margin-top:22px;transition:background .15s,color .15s}
.cta:hover{background:var(--paper);color:var(--ink)}
.note{font-size:12px;color:var(--sub);margin-top:18px;font-family:"IBM Plex Mono","Noto Sans JP",monospace}

.sec{padding-top:8px;padding-bottom:56px}
.sechead{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}
h2{font-size:24px;font-weight:800}
.secdesc{font-size:13.5px;color:var(--sub);max-width:780px;margin-bottom:20px;line-height:1.8}

.catgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:18px}
.catbox{border:1.5px solid var(--ink);padding:20px 18px;background:var(--paper);display:block;transition:background .15s,color .15s}
.catbox:hover{background:var(--ink);color:var(--paper)}
.catbox:hover .catdesc,.catbox:hover .mini,.catbox:hover .count{color:var(--paper)}
.catbox:hover .iname.hot{background:var(--paper);color:var(--ink)}
.catbox:hover .issuelist li{border-top-color:rgba(245,245,240,.35)}
.catbox h3{font-size:17px;font-weight:800}
.catbox .count{font-size:11px;color:var(--sub);font-weight:400;margin-left:6px;font-family:"IBM Plex Mono",monospace}
.catdesc{font-size:13px;color:var(--sub);margin:8px 0 6px;line-height:1.7}
.issuelist{list-style:none}
.issuelist li{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:9px 0;border-top:1px solid var(--soft)}
.issuelist li:first-child{border-top:none;margin-top:6px}
.iname{font-size:13.5px;font-weight:700;line-height:1.7}
.iname.hot{background:var(--ink);color:var(--paper);padding:0 5px;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.mini{font-size:11px;color:var(--sub);white-space:nowrap;font-family:"IBM Plex Mono",monospace}

.cardgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:18px}
.card{border:1.5px solid var(--ink);padding:20px 18px;display:block;background:var(--paper);transition:background .15s,color .15s;scroll-margin-top:24px}
.meter{font-size:11.5px;letter-spacing:.12em;margin-bottom:4px;color:var(--sub);font-family:"IBM Plex Mono","Noto Sans JP",monospace}
.don{color:var(--ink)}
.doff{color:var(--ink);opacity:.25}
.card h3{font-size:16px;font-weight:800;margin:10px 0 6px;line-height:1.6}
.card h3.hot{display:inline-block;background:var(--ink);color:var(--paper);padding:2px 7px}
.card p{font-size:13px;color:var(--sub);line-height:1.7}
.card:hover{background:var(--ink);color:var(--paper)}
.card:hover p,.card:hover .meter{color:var(--paper)}
.card:hover .don,.card:hover .doff{color:var(--paper)}
.card:hover h3.hot{background:var(--paper);color:var(--ink)}
.card:hover .chip{border-color:var(--paper)}
.card:hover .chip.layer{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.chips{margin-top:12px}
.chip{display:inline-block;font-size:10.5px;border:1px solid var(--ink);padding:2px 8px;margin:0 5px 5px 0;font-family:"IBM Plex Mono","Noto Sans JP",monospace}
.chip.layer{background:var(--ink);color:var(--paper);border-color:var(--ink)}

.regitem{border:1.5px solid var(--ink);padding:18px 18px 14px;margin-bottom:14px;background:var(--paper)}
.regtop{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.regtop h3{font-size:15px;font-weight:800}
.status{font-size:11px;border:1px solid var(--ink);padding:3px 9px;white-space:nowrap;font-family:"IBM Plex Mono","Noto Sans JP",monospace}
.regitem p{font-size:13px;color:var(--sub);margin:8px 0;line-height:1.7}
.regmeta{font-size:12px}
.regmeta .lbl{font-size:10.5px;border:1px solid var(--ink);padding:2px 7px;margin-right:8px;font-family:"IBM Plex Mono","Noto Sans JP",monospace}
.regmeta a{text-decoration:underline;text-underline-offset:2px;margin-right:10px}

footer{border-top:1.5px solid var(--ink);padding:36px 0 48px;margin-top:24px}
.selfdef{font-size:13px;color:var(--sub);padding-bottom:24px;border-bottom:1px solid var(--soft);margin-bottom:24px}
footer h4{font-size:13px;font-weight:800;margin-bottom:12px}
footer ul{list-style:none;font-size:12px;color:var(--sub)}
footer ul li{margin-bottom:10px;padding-left:14px;position:relative;line-height:1.8}
footer ul li::before{content:"・";position:absolute;left:0}
footer ul b{color:var(--ink)}
.flinks{font-size:12px;margin-top:22px;font-family:"IBM Plex Mono","Noto Sans JP",monospace}
.flinks a{text-decoration:underline;text-underline-offset:2px}

/* ---- 詳細ページ ---- */
.sheet{border:1.5px solid var(--ink);margin:36px 0 56px;padding:0 0 30px;background:var(--paper)}
.inner{max-width:780px;margin:0 auto;padding:0 28px}
.crumb{font-size:12px;font-weight:700;padding-top:36px;font-family:"IBM Plex Mono","Noto Sans JP",monospace;letter-spacing:.04em}
.crumb a:hover{text-decoration:underline;text-underline-offset:2px}
h1.pagetitle,.pagetitle{font-size:32px;font-weight:800;margin:8px 0;line-height:1.45;letter-spacing:.01em}
p.pagedesc,.pagedesc{font-size:14px;color:var(--sub);margin-bottom:14px}
.meterrow{font-size:12px;letter-spacing:.1em;margin-bottom:12px;color:var(--sub);font-family:"IBM Plex Mono","Noto Sans JP",monospace}
.meterrow .gap{margin-right:18px}
article{padding-bottom:20px}
article h2{font-size:19px;font-weight:800;border-top:1.5px solid var(--ink);padding-top:16px;margin:40px 0 12px}
article h3{font-size:15px;font-weight:800;margin:22px 0 8px}
article p{margin:10px 0}
article ul,article ol{padding-left:1.5em;margin:10px 0}
article li{margin:6px 0}
article a{text-decoration:underline;text-underline-offset:2px}
article table{border-collapse:collapse;width:100%;font-size:13px;margin:16px 0;line-height:1.7;border:1.5px solid var(--ink)}
article th,article td{border:1px solid var(--ink);padding:8px 11px;text-align:left;vertical-align:top}
article th{background:var(--chipbg);font-weight:700;white-space:nowrap}
@media(max-width:640px){article table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}article th{white-space:normal}}
.thesis{border:1.5px solid var(--ink);padding:14px 18px;margin:22px 0;font-weight:700;line-height:1.9}
.skeleton-note{font-size:12px;color:var(--sub);border:1.5px dashed var(--ink);padding:10px 14px;margin:18px 0;font-family:"IBM Plex Mono","Noto Sans JP",monospace}

@media (max-width:1024px){.wrap{padding:0 24px}}
@media (max-width:640px){.wrap{padding:0 16px}.hero{padding-top:36px;padding-bottom:30px}h2{font-size:21px}h1.pagetitle,.pagetitle{font-size:24px}.inner{padding:0 18px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* ---- 課題マップ ---- */
.legend{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 18px}
.legend button{font-family:"IBM Plex Mono","Noto Sans JP",monospace;font-size:11px;border:1.5px solid var(--ink);background:var(--paper);color:var(--ink);padding:4px 10px;cursor:pointer;transition:background .15s,color .15s}
.legend button.active{background:var(--ink);color:var(--paper)}
.mapbox{border:1.5px solid var(--ink);background:var(--paper);position:relative;margin-bottom:10px}
.mapbox svg{display:block;width:100%;height:auto}
.edge{stroke:var(--ink);stroke-opacity:.13;stroke-width:1;transition:stroke-opacity .12s}
.edge.lit{stroke-opacity:.85;stroke-width:1.6}
.edge.dim{stroke-opacity:.04}
.node{cursor:pointer;transition:opacity .12s}
.node rect{fill:var(--ink)}
.node.dim{opacity:.13}
.tip{position:absolute;pointer-events:none;border:1.5px solid var(--ink);background:var(--paper);padding:7px 10px;font-size:12px;font-family:"IBM Plex Mono","Noto Sans JP",monospace;display:none;max-width:260px;line-height:1.6;z-index:2}
.mapnote{font-size:12px;color:var(--sub);font-family:"IBM Plex Mono","Noto Sans JP",monospace;margin:8px 0 28px}
.maplist-h{font-size:19px;font-weight:800;border-top:1.5px solid var(--ink);padding-top:16px;margin:36px 0 14px}
.issuerow{border:1.5px solid var(--ink);padding:14px 16px;margin-bottom:12px;background:var(--paper)}
.issuerow .rowtop{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.issuerow .iname:hover{text-decoration:underline;text-underline-offset:3px}
.relchips a.chip:hover{background:var(--ink);color:var(--paper)}
/* ---- 出典・データ集 ---- */
.org-h{font-size:18px;font-weight:800;border-top:1.5px solid var(--ink);padding-top:16px;margin:34px 0 10px}
.orgcount{font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:400;border:1px solid var(--ink);padding:1px 7px;margin-left:8px;vertical-align:2px}
.srclist{list-style:none;counter-reset:src}
.srclist li{padding:10px 0;border-top:1px solid var(--soft)}
.srclist li:first-child{border-top:none}
.srclist li::before{counter-increment:src;content:counter(src) ". ";font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--sub)}
.srctitle{font-size:13.5px;font-weight:700}
.fresh{font-size:10px;border:1px solid var(--ink);background:var(--chipbg);padding:1px 6px;font-family:"IBM Plex Mono","Noto Sans JP",monospace;margin-left:8px;white-space:nowrap}
.srctag{font-size:11px;color:var(--sub);font-family:"IBM Plex Mono","Noto Sans JP",monospace;margin-top:3px;padding-left:1.6em}
.srctag a{text-decoration:underline;text-underline-offset:2px}