:root{
  --accent:#2563eb;
  --accent-soft:color-mix(in srgb,var(--accent) 9%,#fff);
  --accent-line:color-mix(in srgb,var(--accent) 28%,#fff);
  --ink:#1d2433;--ink-2:#465063;--muted:#6b7488;
  --paper:#fff;--mist:#f3f5f9;--rule:#e2e6ee;
  --warn:#b45309;--warn-soft:#fff6e9;--memo:#475569;--memo-soft:#f1f4f8;
  --radius:10px;
  --font:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Noto Sans CJK JP","Yu Gothic UI",Meiryo,system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--mist);line-height:1.85;font-size:1rem;letter-spacing:.02em;font-feature-settings:"palt" 0}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{max-width:1140px;margin:0 auto;padding:0 16px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:8px;z-index:10;background:#fff;padding:8px 12px}

/* ---- header ---- */
.site-header{background:var(--paper);border-top:4px solid var(--accent)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:8px 24px;padding-top:16px;padding-bottom:14px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.35rem;color:var(--ink);text-decoration:none;letter-spacing:.04em}
.logo-mark{display:inline-grid;grid-template-columns:repeat(3,6px);gap:3px;padding:7px 8px;background:var(--accent);border-radius:6px}
.logo-mark i{width:6px;height:6px;border-radius:50%;background:#fff}.logo-mark i:nth-child(2){opacity:.7}.logo-mark i:nth-child(3){opacity:.45}
.logo-mark.big{transform:scale(1.5);transform-origin:left center;margin-right:18px}
.tagline{margin:0;color:var(--muted);font-size:.8rem}
.gnav{border-top:1px solid var(--rule);background:var(--paper)}
.gnav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.gnav ul::-webkit-scrollbar{display:none}
.gnav a{display:block;padding:11px 14px;color:var(--ink-2);text-decoration:none;font-size:.88rem;font-weight:600;white-space:nowrap;border-bottom:3px solid transparent}
.gnav a:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---- breadcrumbs ---- */
.crumbs ol{list-style:none;margin:0;padding:14px 0 0;display:flex;flex-wrap:wrap;font-size:.76rem;color:var(--muted)}
.crumbs li:not(:last-child)::after{content:"›";margin:0 8px;color:var(--rule)}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--accent);text-decoration:underline}
.crumbs span{display:inline-block;max-width:28em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}

/* ---- page layout ---- */
.page{display:grid;gap:28px;padding-top:18px;padding-bottom:56px}
@media (min-width:1000px){.page{grid-template-columns:minmax(0,1fr) 300px}.page-wide{grid-template-columns:minmax(0,1fr)}}
main{min-width:0}
.section-title{font-size:1.05rem;font-weight:800;margin:0 0 14px;padding-left:12px;border-left:5px solid var(--accent);line-height:1.4}
main section+section{margin-top:36px}
.page-title{font-size:1.5rem;line-height:1.45;margin:0 0 20px}
.page-title span{font-size:.85rem;color:var(--muted);font-weight:600;margin-left:10px}
.empty{background:var(--paper);border-radius:var(--radius);padding:28px;color:var(--muted)}

/* ---- chips ---- */
.chip{display:inline-block;font-size:.72rem;font-weight:700;line-height:1;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:4px;padding:5px 8px;text-decoration:none}
.cat-chips{background:var(--paper);border-radius:var(--radius);padding:18px 18px 12px;margin-bottom:28px}
.cat-chips ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.cat-chips a{display:inline-flex;gap:8px;align-items:center;padding:7px 14px;border:1px solid var(--rule);border-radius:999px;color:var(--ink);text-decoration:none;font-size:.88rem;font-weight:600;background:#fff}
.cat-chips a span{font-size:.72rem;color:var(--muted);font-weight:500}
.cat-chips a:hover{border-color:var(--accent);color:var(--accent)}

/* ---- cards ---- */
.cards{list-style:none;margin:0;padding:0;display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card a{display:flex;flex-direction:column;height:100%;background:var(--paper);border-radius:var(--radius);overflow:hidden;color:var(--ink);text-decoration:none;border:1px solid var(--rule)}
.card a:hover .card-title{color:var(--accent)}
.card a:hover .card-thumb svg{transform:scale(1.03)}
.card-thumb{display:block;overflow:hidden;border-bottom:1px solid var(--rule)}
.card-thumb svg{transition:transform .25s ease}
@media (prefers-reduced-motion:reduce){.card-thumb svg{transition:none}}
.card-body{display:flex;flex-direction:column;gap:8px;padding:14px 16px 16px;flex:1}
.card-body .chip{align-self:flex-start}
.card-title{font-weight:700;font-size:.98rem;line-height:1.6;flex:1}
.card time{font-size:.75rem;color:var(--muted)}
@media (max-width:560px){
  .cards{grid-template-columns:1fr;gap:12px}
  .card a{flex-direction:row}
  .card-thumb{width:42%;flex-shrink:0;border-bottom:0;border-right:1px solid var(--rule);display:flex;align-items:center;background:var(--mist)}
  .card-body{padding:10px 12px;gap:5px}
  .card-title{font-size:.88rem;line-height:1.55}
}

/* ---- sidebar ---- */
.sidebar{display:flex;flex-direction:column;gap:20px}
@media (min-width:1000px){.sidebar>.widget:last-child{position:sticky;top:16px}}
.widget{background:var(--paper);border-radius:var(--radius);padding:18px;border:1px solid var(--rule)}
.widget-title{display:block;font-size:.95rem;font-weight:800;margin:0 0 12px;padding-bottom:8px;border-bottom:2px solid var(--ink)}
.widget p{margin:0 0 8px;font-size:.86rem;color:var(--ink-2)}
.widget.about a{font-size:.85rem}
.search-row{display:flex}
.search-row input,.search-big input{flex:1;min-width:0;font:inherit;font-size:.9rem;padding:9px 12px;border:1px solid var(--rule);border-right:0;border-radius:6px 0 0 6px;background:var(--mist)}
.search-row button,.search-big button{font:inherit;font-size:.86rem;font-weight:700;padding:0 16px;border:0;border-radius:0 6px 6px 0;background:var(--accent);color:#fff;cursor:pointer}
.cat-list{list-style:none;margin:0;padding:0}
.cat-list a{display:flex;justify-content:space-between;padding:9px 2px;border-bottom:1px dashed var(--rule);color:var(--ink);text-decoration:none;font-size:.9rem}
.cat-list a:hover{color:var(--accent)}
.cat-list span{font-size:.75rem;color:var(--muted);background:var(--mist);border-radius:999px;padding:0 9px;line-height:1.9}
.sidebar .widget:has(.mini-list){display:none}
@media (min-width:1000px){.sidebar .widget:has(.mini-list){display:block}}
.mini-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.mini a{display:grid;grid-template-columns:96px 1fr;gap:10px;align-items:center;color:var(--ink);text-decoration:none}
.mini-thumb{border-radius:6px;overflow:hidden;border:1px solid var(--rule)}
.mini-title{font-size:.82rem;line-height:1.55;font-weight:600}
.mini a:hover .mini-title{color:var(--accent)}

/* ---- article ---- */
.post{background:var(--paper);border-radius:var(--radius);border:1px solid var(--rule);padding:28px 22px 32px}
@media (min-width:700px){.post{padding:40px 48px 44px}}
.post-head .chip{margin-bottom:12px}
.post h1{font-size:1.55rem;line-height:1.5;margin:0 0 12px;letter-spacing:.03em}
@media (min-width:700px){.post h1{font-size:1.85rem}}
.post-meta{display:flex;flex-wrap:wrap;gap:4px 16px;margin:0;font-size:.8rem;color:var(--muted)}
.pr{display:inline-block;margin:14px 0 0;font-size:.74rem;color:var(--muted);background:var(--mist);border-radius:4px;padding:3px 9px}
.post-eyecatch{margin:22px 0 8px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--rule)}
.post-body{font-size:1rem}
.post-body>p,.post-body li{color:#2a3242}
.post-body p{margin:1.1em 0}
.post-body h2{font-size:1.32rem;line-height:1.5;margin:2.6em 0 1em;padding:.7em .9em;background:var(--ink);color:#fff;border-radius:6px;position:relative}
.post-body h2::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--accent);border-radius:6px 0 0 6px}
.post-body h3{font-size:1.12rem;line-height:1.55;margin:2em 0 .8em;padding:0 0 .45em .1em;border-bottom:2px solid var(--rule);position:relative}
.post-body h3::after{content:"";position:absolute;left:0;bottom:-2px;width:72px;height:2px;background:var(--accent)}
.post-body h4{font-size:1rem;margin:1.6em 0 .6em}
.post-body ul,.post-body ol{padding-left:1.5em;margin:1.1em 0}
.post-body li{margin:.35em 0}
.post-body ol>li::marker{font-weight:800;color:var(--accent)}
.post-body ul>li::marker{color:var(--accent)}
.post-body strong{background:linear-gradient(transparent 62%,color-mix(in srgb,#facc15 55%,#fff) 62%);font-weight:800}
.post-body blockquote{margin:1.4em 0;padding:14px 18px;border-left:4px solid var(--rule);background:var(--mist);color:var(--ink-2);border-radius:0 6px 6px 0}
.post-body blockquote p{margin:0}
.post-body hr{border:0;border-top:1px solid var(--rule);margin:2.4em 0}
.table-wrap{overflow-x:auto;margin:1.4em 0;border:1px solid var(--rule);border-radius:8px}
.post-body table{border-collapse:collapse;width:100%;font-size:.9rem;min-width:420px}
.post-body th,.post-body td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--rule);vertical-align:top}
.post-body tr:last-child td{border-bottom:0}
.post-body th{background:var(--accent-soft);font-weight:700;white-space:nowrap}
.post-body tbody tr:nth-child(even) td{background:#fafbfd}
.post-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86em;background:var(--mist);border:1px solid var(--rule);border-radius:4px;padding:.1em .4em}
.post-body pre{background:#1b2130;color:#e8ecf3;padding:16px 18px;border-radius:8px;overflow-x:auto;font-size:.86rem;line-height:1.65;margin:1.3em 0}
.post-body pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}

/* 目次 */
.toc{margin:2em 0;border:2px solid var(--accent-line);border-radius:var(--radius);background:var(--accent-soft);padding:0}
.toc summary{cursor:pointer;list-style:none;padding:12px 18px;font-weight:800;display:flex;justify-content:space-between;align-items:center}
.toc summary::-webkit-details-marker{display:none}
.toc summary::after{content:"閉じる";font-size:.75rem;font-weight:600;color:var(--accent)}
.toc:not([open]) summary::after{content:"開く"}
.toc ol{counter-reset:toc;list-style:none;margin:0;padding:0 18px 16px}
.toc li{margin:0;padding:5px 0;border-top:1px dashed var(--accent-line);font-size:.9rem;line-height:1.6}
.toc li.l2{counter-increment:toc;font-weight:700}
.toc li.l2::before{content:counter(toc);display:inline-block;min-width:1.6em;color:var(--accent)}
.toc li.l3{padding-left:1.8em;font-size:.84rem}
.toc a{color:var(--ink);text-decoration:none}.toc a:hover{color:var(--accent);text-decoration:underline}

/* ボックス */
.box{margin:1.6em 0;border-radius:8px;padding:14px 18px 6px;border:1px solid}
.box-title{margin:0 0 4px!important;font-weight:800;font-size:.92rem}
.box>p:last-child,.box>ul:last-child,.box>ol:last-child{margin-bottom:.8em}
.box-point{background:var(--accent-soft);border-color:var(--accent-line)}.box-point .box-title{color:var(--accent)}
.box-warn{background:var(--warn-soft);border-color:#f5d0a4}.box-warn .box-title{color:var(--warn)}
.box-memo{background:var(--memo-soft);border-color:var(--rule)}.box-memo .box-title{color:var(--memo)}

/* アフィリエイト */
.aff{margin:2em 0;border:2px solid var(--accent);border-radius:var(--radius);padding:16px 18px;background:#fff}
.aff-label{margin:0 0 10px!important;font-weight:800;font-size:.9rem;color:var(--accent)}
.aff-body a{font-weight:700}
.aff-body img{display:inline-block;margin:0 auto}

/* シェア・著者 */
.share{margin-top:40px;padding-top:22px;border-top:1px solid var(--rule)}
.share p{margin:0 0 10px;font-weight:800;font-size:.9rem}
.share-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.share-row a,.share-row button{display:flex;justify-content:center;align-items:center;min-height:42px;border-radius:6px;font:inherit;font-size:.82rem;font-weight:700;color:#fff;text-decoration:none;border:0;cursor:pointer}
.sh-x{background:#000}.sh-line{background:#06c755}.sh-hatena{background:#00a4de}.sh-copy{background:var(--ink-2)}
@media (max-width:420px){.share-row{grid-template-columns:repeat(2,1fr)}}
.author{display:flex;gap:16px;align-items:flex-start;margin-top:28px;padding:18px;background:var(--mist);border-radius:var(--radius)}
.author p{margin:0;font-size:.84rem;color:var(--ink-2);line-height:1.75}
.author .author-name{font-weight:800;color:var(--ink);font-size:.92rem;margin-bottom:4px}
.related{margin-top:40px}

/* 検索 */
.search-big{display:flex;margin-bottom:16px}
.search-big input{font-size:1rem;padding:12px 14px;background:#fff}
.search-status{color:var(--ink-2);font-size:.9rem}
.result-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.result-list a{display:flex;flex-direction:column;gap:6px;padding:14px 16px;background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius);color:var(--ink);text-decoration:none}
.result-list a .chip{align-self:flex-start}
.result-list a span:last-child{font-size:.84rem;color:var(--muted)}
.result-list a:hover strong{color:var(--accent)}

/* ---- footer ---- */
.site-footer{background:var(--ink);color:#c9d0dc;padding:40px 0 20px;font-size:.85rem}
.footer-grid{display:grid;gap:24px}
@media (min-width:760px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
.footer-logo{font-weight:800;font-size:1.05rem;color:#fff;margin:0 0 8px}
.footer-head{font-weight:800;color:#fff;margin:0 0 8px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:4px 0}
.site-footer a{color:#c9d0dc;text-decoration:none}.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer p{margin:0}
.copy{text-align:center;margin-top:32px!important;font-size:.75rem;color:#8b94a7}
.to-top{position:fixed;right:16px;bottom:16px;width:44px;height:44px;display:grid;place-items:center;background:var(--accent);color:#fff;text-decoration:none;border-radius:50%;font-weight:800;box-shadow:0 4px 14px color-mix(in srgb,var(--accent) 35%,transparent)}

/* ---- 診断ツール ---- */
.tool-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.tool-list a{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:14px 16px;background:#fff;border:2px solid var(--accent);border-radius:var(--radius);color:var(--ink);text-decoration:none}
.tool-list strong{display:block;font-size:1rem;line-height:1.5}
.tool-list a span span{display:block;font-size:.84rem;color:var(--ink-2);line-height:1.6;margin-top:2px}
.tool-q{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;font-size:1.1rem}
.tool-go{font-size:.82rem;font-weight:800;color:#fff;background:var(--accent);border-radius:999px;padding:6px 14px;white-space:nowrap}
.tool-list a:hover{background:var(--accent-soft)}
.tools-hero{margin-bottom:28px}
.sidebar .tool-list a{grid-template-columns:1fr}.sidebar .tool-go,.sidebar .tool-q{display:none}
@media (max-width:560px){.tool-list a{grid-template-columns:auto 1fr}.tool-go{grid-column:1/-1;text-align:center;padding:10px}}
.shindan .lead{font-size:1.05rem;color:var(--ink-2);margin:0}
.dq-form{margin-top:24px}
.dq{border:0;margin:0;padding:0}
.dq legend{font-size:1.25rem;font-weight:800;line-height:1.6;margin-bottom:12px;padding:0}
.dq-num{display:block;font-size:.85rem;color:var(--accent);margin-bottom:4px}
.dq-hint{margin:0 0 12px;color:var(--ink-2);font-size:.92rem}
.dq-opts{display:flex;flex-direction:column;gap:10px}
.dq-opt{font:inherit;font-size:1.05rem;font-weight:700;text-align:left;padding:16px 18px;min-height:56px;border:2px solid var(--rule);border-radius:var(--radius);background:#fff;color:var(--ink);cursor:pointer}
.dq-opt:hover{border-color:var(--accent);background:var(--accent-soft)}
.dq-back,.dq-restart{font:inherit;font-size:.95rem;margin-top:16px;padding:10px 16px;border:1px solid var(--rule);border-radius:8px;background:var(--mist);color:var(--ink);cursor:pointer}
.dr{margin-top:24px;padding:22px;border:3px solid var(--accent);border-radius:var(--radius);background:var(--accent-soft)}
.dr-label{margin:0;font-weight:700;color:var(--accent)}
.dr-title{font-size:1.4rem;margin:.2em 0 .4em;line-height:1.5}
.dr .post-body h2{font-size:1.1rem}
.dr-links{margin-top:16px;background:#fff;border-radius:8px;padding:12px 16px}
.dr-links p{margin:0 0 6px;font-weight:800}
.dr-links ul{margin:0;padding-left:1.2em}

/* ---- 大きな文字モード（高齢の方向けサイト） ---- */
html:has(body.large){font-size:112.5%}
html[data-fs="l"]:has(body.large){font-size:125%}
html[data-fs="xl"]:has(body.large){font-size:140%}
body.large{--ink:#111827;--ink-2:#2f3747;--muted:#4b5563;line-height:1.95;letter-spacing:.03em}
body.large .post-body>p,body.large .post-body li{color:#1f2937}
body.large a{text-decoration-thickness:2px}
body.large .tagline{font-size:.85rem;color:var(--ink-2)}
body.large .gnav a{padding:14px 16px;font-size:.95rem}
body.large .card-title{font-size:1.05rem}
body.large .card time,body.large .post-meta,body.large .crumbs ol{font-size:.85rem}
body.large .chip{font-size:.82rem;padding:6px 10px}
body.large .post-body ol>li{margin:.7em 0}
body.large .toc li{font-size:.95rem;padding:8px 0}
body.large .share-row a,body.large .share-row button{min-height:52px;font-size:.95rem}
body.large .search-row input,body.large .search-row button{font-size:1rem;min-height:48px}
body.large .to-top{width:56px;height:56px;font-size:1.3rem}
.fs-switch{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.fs-switch span{font-size:.85rem;font-weight:700;color:var(--ink-2);margin-right:2px}
.fs-switch button{font:inherit;font-size:.9rem;font-weight:700;min-width:56px;min-height:44px;padding:4px 12px;border:2px solid var(--accent);border-radius:8px;background:#fff;color:var(--accent);cursor:pointer}
.fs-switch button[aria-pressed="true"]{background:var(--accent);color:#fff}
@media (max-width:560px){body.large .card-title{font-size:1rem}.fs-switch{width:100%}.fs-switch button{flex:1}}