:root{
  --bg:#ffffff; --soft:#f6f7f9; --line:#e6e8ec; --ink:#16181d; --muted:#6b7280;
  --img:#2563eb; --vid:#ea580c; --ok:#15803d; --warn:#b45309; --bad:#b91c1c;
  --f-body:"Zen Kaku Gothic New","Hiragino Sans","Noto Sans JP",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.85;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
a{color:var(--img)}
img,video{max-width:100%;height:auto;display:block}
h1,h2,h3{text-wrap:balance;font-weight:900;line-height:1.4;margin:0}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:8px 12px;z-index:20}
.skip:focus{left:8px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--img);outline-offset:2px}

header.site{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
header.site .bar{max-width:1040px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:14px 24px;flex-wrap:wrap}
.brand{font-weight:900;font-size:18px;color:var(--ink);text-decoration:none;display:grid;line-height:1.3}
.brand small{font-weight:500;font-size:11px;color:var(--muted)}
.gnav{display:flex;flex-wrap:wrap;gap:4px;flex:1 1 360px;min-width:0}
.gnav::-webkit-scrollbar{display:none}
.gnav a{white-space:nowrap;font-size:14px;line-height:1.5;color:var(--ink);text-decoration:none;padding:6px 10px;border-radius:8px}
.gnav a:hover{background:var(--soft)}
.gnav a[aria-current="page"]{background:var(--ink);color:#fff}

.wrap{max-width:820px;margin:0 auto;padding-inline:20px}
main.wrap{padding-block:8px 64px}
.wide{max-width:1040px}
.pagehead{padding-block:24px 24px;display:grid;gap:10px}
.crumbs{font-size:13px;color:var(--muted);display:flex;gap:6px;flex-wrap:wrap}
.crumbs a{color:var(--muted);text-decoration:none}
.pagehead h1{font-size:clamp(26px,5vw,38px)}
.lead{color:var(--muted);margin:0}
.meta{font-size:13px;color:var(--muted);margin:0}
section{padding-block:36px;border-top:1px solid var(--line)}
section h2{font-size:clamp(21px,3.4vw,26px);margin-bottom:10px}
section h3{font-size:18px;margin:18px 0 6px}
.sub{color:var(--muted);margin:0 0 18px}
p{margin:0 0 12px}
ul,ol{padding-left:1.3em;margin:0 0 12px}
.toc{background:var(--soft);border-radius:12px;padding:14px 20px;font-size:15px;margin-bottom:8px}
.toc b{display:block;font-size:13px;color:var(--muted)}
.toc ol{margin:4px 0 0}
.toc a{text-decoration:none}
.note{border:1px solid #fde68a;background:#fffbeb;border-radius:10px;padding:12px 16px;font-size:14.5px;margin:14px 0}
.note b{color:var(--warn)}
.info{border:1px solid #bfdbfe;background:#eff6ff;border-radius:10px;padding:12px 16px;font-size:14.5px;margin:14px 0}
figure{margin:16px 0}
figure img,figure video{border-radius:12px}
figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:12px 0}
table{border-collapse:collapse;width:100%;min-width:540px;font-size:14.5px}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
th{font-size:12.5px;color:var(--muted);font-weight:500;background:var(--soft)}
td.c,th.c{text-align:center}
.y{color:var(--img);font-weight:700}.n{color:#c4c8cf}

/* 例の比較（✕→○） */
.ex{display:grid;gap:8px;margin:10px 0}
.ex div{border-radius:10px;padding:10px 14px;font-size:15px}
.ex .bad{background:#fef2f2;border:1px solid #fecaca}
.ex .good{background:#f0fdf4;border:1px solid #bbf7d0}
.ex b{font-size:12px;display:block;font-family:var(--f-mono);letter-spacing:.06em}
.ex .bad b{color:var(--bad)}.ex .good b{color:var(--ok)}
.item{border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:14px 0;scroll-margin-top:90px}
.item h3{margin:0 0 6px;font-size:18px}
.item .num{font-family:var(--f-mono);font-size:12px;color:var(--muted)}
.item p:last-child{margin-bottom:0}
.tag{display:inline-block;font-size:12px;font-weight:700;border-radius:4px;padding:0 8px;margin-right:6px;vertical-align:middle}
.tag.i{color:var(--img);background:#eff6ff}.tag.v{color:var(--vid);background:#fff7ed}.tag.a{color:var(--ink);background:var(--soft)}
.tag.x{color:var(--bad);background:#fef2f2}.tag.c{color:var(--warn);background:#fffbeb}
.chk{font-size:13px;color:var(--muted)}

/* カードとリンク */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin:12px 0}
.card{border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:grid;gap:6px;align-content:start;min-width:0;background:#fff}
.card h3{margin:0;font-size:18px}
.card p{margin:0;font-size:14.5px}
.card ul{margin:0;font-size:14px;color:var(--muted)}
.card .model{font-family:var(--f-mono);font-size:12px;color:var(--muted)}
.card .chips{display:flex;gap:6px;flex-wrap:wrap}
.chipl{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:0 10px}
.card a.go{justify-self:start;margin-top:6px;font-size:14px;font-weight:700;text-decoration:none;border:1px solid currentColor;border-radius:999px;padding:4px 14px}
.card.image a.go{color:var(--img)}.card.video a.go{color:var(--vid)}
.kind{font-size:12px;font-weight:700}.kind.image{color:var(--img)}.kind.video{color:var(--vid)}
.links{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.links a{display:grid;gap:2px;border:1px solid var(--line);border-radius:12px;padding:14px 16px;text-decoration:none;color:var(--ink)}
.links a b{font-size:16px}
.links a span{font-size:13.5px;color:var(--muted)}
.links a:hover{background:var(--soft)}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 4px}
.filters button,.btn{font:inherit;font-size:14px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:6px 16px;border-radius:999px;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.primary{background:var(--img);border-color:var(--img);color:#fff;font-weight:700;text-decoration:none;display:inline-block}

/* トップ */
.hero{padding-block:36px 28px;display:grid;gap:14px}
.hero h1{font-size:clamp(28px,6vw,46px)}
.hero h1 .i{color:var(--img)}.hero h1 .v{color:var(--vid)}
.strong{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.strong div{border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.strong b{display:block;font-size:16px;margin-bottom:4px}
.strong span{font-size:14px;color:var(--muted)}

/* テンプレート */
.tpl{border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:12px 0;scroll-margin-top:90px}
.tpl h3{margin:0 0 4px}
.tpl pre{white-space:pre-wrap;font:inherit;background:var(--soft);border-radius:10px;padding:12px 14px;margin:8px 0}
.tpl .slots{font-size:13.5px;color:var(--muted)}
.tpl .row{display:flex;gap:8px;flex-wrap:wrap}

/* 運営 */
.dl{display:grid;grid-template-columns:max-content 1fr;gap:8px 18px;margin:0}
.dl dt{color:var(--muted);font-size:14px}
.dl dd{margin:0}
.ph{background:#fef9c3;padding:0 4px;border-radius:3px}

footer.site{border-top:1px solid var(--line);background:var(--soft);font-size:13px;color:var(--muted);padding-block:24px}
.fnav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:10px}
.fnav a{color:var(--ink);text-decoration:none;font-size:14px}
@media (max-width:520px){.dl{grid-template-columns:1fr}.dl dt{margin-top:6px}}
.dx{border:1px solid var(--line);border-radius:14px;padding:20px;display:grid;gap:12px}
.dx-mode{display:flex;gap:8px;flex-wrap:wrap}
.dx-mode button,.dx-actions button{font:inherit;font-size:14px;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:6px 16px;border-radius:999px;cursor:pointer}
.dx-mode button[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.dx-label{font-size:13px;color:var(--muted);margin-bottom:-6px}
#dxIn{font:inherit;font-size:16px;width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;resize:vertical;line-height:1.7;background:var(--bg);color:var(--ink)}
#dxIn:focus{outline:2px solid var(--img);outline-offset:1px;border-color:transparent}
.dx-actions{display:flex;gap:10px;flex-wrap:wrap}
.dx-actions .dx-primary{background:var(--img);border-color:var(--img);color:#fff;font-weight:700;padding:8px 22px}
.dx-actions .dx-ai{border-color:var(--ink);font-weight:700;padding:8px 18px}
.dx-actions button:disabled{opacity:.5;cursor:default}
.dx-mode button:focus-visible,.dx-actions button:focus-visible,.dx-copy:focus-visible{outline:2px solid var(--img);outline-offset:2px}
.dx-out{display:grid;gap:12px}
.dx-score{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.dx-score b{font-size:40px;line-height:1;font-variant-numeric:tabular-nums}
.dx-score span{color:var(--muted);font-size:14px}
.dx-score em{font-style:normal;font-weight:700;font-size:15px;border-radius:999px;padding:2px 12px}
.dx-bar{height:8px;border-radius:4px;background:var(--soft);overflow:hidden}
.dx-bar i{display:block;height:100%;border-radius:4px}
.lv-good{color:#15803d}.lv-mid{color:#b45309}.lv-low{color:#b91c1c}
.bg-good{background:#16a34a}.bg-mid{background:#f59e0b}.bg-low{background:#dc2626}
.pill-good{background:#dcfce7;color:#15803d}.pill-mid{background:#fef3c7;color:#b45309}.pill-low{background:#fee2e2;color:#b91c1c}
.dx-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.dx-list li{display:grid;grid-template-columns:24px 1fr;gap:8px;font-size:15px;align-items:start}
.dx-list .ic{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;margin-top:3px}
.dx-list .ok .ic{background:#dcfce7;color:#15803d}
.dx-list .ng .ic{background:#fef3c7;color:#b45309}
.dx-list small{display:block;color:var(--muted);font-size:13.5px}
.dx-warn{border:1px solid #fde68a;background:#fffbeb;border-radius:10px;padding:10px 14px;font-size:14.5px}
.dx-warn b{color:#b45309}
.dx-soft{background:#f8fafc;border-color:var(--line)}
.dx-soft b{color:var(--muted)}
.dx-aiout{border-top:1px solid var(--line);padding-top:14px;display:grid;gap:10px;font-size:15px}
.dx-aiout h3{font-size:16px}
.dx-aiout ul{margin:0;padding-left:1.2em}
.dx-improved{background:var(--soft);border-radius:10px;padding:12px 14px;white-space:pre-wrap}
.dx-copy{font:inherit;font-size:13px;border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:4px 14px;cursor:pointer;justify-self:start}
.dx-status{color:var(--muted);font-size:14px}
.dx-note{font-size:13px;color:var(--muted);margin:0}
.dx-words{margin-top:4px}
.dx-words summary{font-size:13px;color:var(--img);cursor:pointer;list-style:none;display:inline-block}
.dx-words summary::-webkit-details-marker{display:none}
.dx-words summary::before{content:"＋ "}
.dx-words[open] summary::before{content:"− "}
.dx-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.dx-chip{font:inherit;font-size:13px;border:1px solid var(--line);background:var(--soft);color:var(--ink);border-radius:999px;padding:2px 10px;cursor:pointer}
.dx-chip:hover{border-color:var(--img);color:var(--img)}
.dx-chip:focus-visible{outline:2px solid var(--img);outline-offset:1px}
.dx-tips{border:1px solid #bfdbfe;background:#eff6ff;border-radius:10px;padding:12px 14px;display:grid;gap:10px}
.dx-tips-h{color:var(--img);font-size:14.5px}
.dx-tip{display:grid;gap:2px}
.dx-tip-n{font-weight:700;font-size:14.5px}
.dx-tip-n span{font-weight:400;color:var(--muted);font-size:13px;margin-left:6px}
.dx-tip p{margin:0;font-size:14px;color:#334155}
.dx-explain{margin:0;font-size:12.5px;color:var(--muted)}
.dx-ihead{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.dx-pts{font-family:var(--f-mono);font-size:12px;color:var(--muted)}
.dx-why{color:#64748b}
.dx-impbox{border:1px solid var(--line);border-radius:10px;padding:12px 14px;display:grid;gap:10px}
.dx-impbox p{margin:0;font-size:14.5px}
.dx-fixes{margin:0;padding-left:1.2em;font-size:13.5px;color:var(--muted)}
.dx-left{color:#b45309!important;font-size:13.5px!important}
.tag.pr{color:#7c3aed;background:#f5f3ff}
.prnote{font-size:12.5px;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:4px 10px;display:inline-block}
.prbox{display:flex;justify-content:center;margin:12px 0}
.prbox a{display:block;max-width:420px;width:100%}
.prbox a img{width:100%;height:auto;border-radius:10px;border:1px solid var(--line)}
.prbox .px{position:absolute;width:1px;height:1px;opacity:0}
.ad{position:relative;display:flex;justify-content:center;align-items:center;margin:20px auto;padding:10px 0 4px;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);max-width:100%}
.ad .adl{position:absolute;top:2px;left:0;font-size:10px;font-weight:700;color:var(--muted);letter-spacing:.06em}
.ad a{display:block;max-width:100%}
.ad a img{max-width:100%;height:auto}
.ad-top a{width:320px}.ad-mid a{width:468px}
.ad-side .adtxt{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:14px;width:auto}
.ad-side .adtxt img{width:100px;flex:none;border-radius:6px}
.ad .px{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}

@media (max-width:640px){
  header.site{position:static}
  header.site .bar{padding:10px 16px;gap:8px}
  .gnav{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;flex-basis:100%}
  .gnav a{font-size:12.5px;padding:6px 2px;text-align:center;background:var(--soft)}
}
@media (max-width:360px){.gnav{grid-template-columns:repeat(2,1fr)}}