:root{
  color-scheme:light;
  --bg:#fff; --ink:#111; --ink2:#3b3b3b; --mute:#6a6a6a; --line:#e6e6e3; --line2:#cfcfcb; --soft:#f6f6f4;
  --font:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic","Noto Sans JP","Meiryo",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gut:20px; --wrap:1200px; --r:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;line-break:strict;word-break:auto-phrase;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.85;font-feature-settings:"palt" 1;-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
h1,h2,h3{text-wrap:balance;line-height:1.35;margin:0;font-weight:800;letter-spacing:.01em}
p,li{text-wrap:pretty}
p{margin:0}
a{color:inherit;text-decoration-color:var(--line2);text-underline-offset:.22em}
a:hover{text-decoration-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
img,svg{max-width:100%}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 14px;z-index:99}
.skip:focus{left:8px;top:8px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:var(--gut);padding-right:var(--gut)}

/* ヘッダー */
.site-head{border-bottom:1px solid var(--line);background:#fff;position:relative;z-index:5}
.head-row{display:flex;flex-direction:column;gap:0}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;white-space:nowrap;padding:16px 0 10px}
.logo-mark{width:14px;height:14px;background:var(--accent);display:inline-block;flex:none}
.logo-name{font-weight:800;font-size:20px;letter-spacing:.02em}
.logo-ed{font-weight:700;font-size:14px;color:var(--accent);padding-left:10px;border-left:1px solid var(--line2);line-height:1.2}
.gnav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;margin:0 calc(var(--gut) * -1);padding:0 var(--gut)}
.gnav::-webkit-scrollbar{display:none}
.gnav a{flex:none;text-decoration:none;font-weight:700;font-size:15px;padding:10px 12px;position:relative;min-height:44px;display:inline-flex;align-items:center;color:var(--ink2)}
.gnav a:first-child{padding-left:0}
.gnav a[aria-current=page]{color:var(--ink)}
.gnav a[aria-current=page]::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:3px;background:var(--accent)}
.gnav a:first-child[aria-current=page]::after{left:0}
.gnav a:hover{color:var(--accent)}

/* 部品 */
.eyebrow{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.12em}
.chip{display:inline-block;font-size:13px;font-weight:700;line-height:1;color:var(--accent);background:var(--accent-soft);padding:6px 10px;border-radius:999px;text-decoration:none}
.chip-link:hover{background:var(--accent-mid)}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;font-size:13px;color:var(--mute);line-height:1.5}
.meta-src{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap}
.src{font-weight:700;color:var(--ink2)}
.dot{display:none}
.meta-src time{white-space:nowrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;font:inherit;font-size:15px;font-weight:700;color:var(--ink);background:#fff;border:1px solid var(--line2);border-radius:999px;text-decoration:none;cursor:pointer;line-height:1.2}
.btn:hover{border-color:var(--ink)}
.btn svg{width:14px;height:14px;flex:none}
.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn-primary:hover{filter:brightness(.92);border-color:var(--accent)}
.btn[disabled]{opacity:.55;cursor:default}
.empty{color:var(--mute);padding:24px 0}
.note{font-size:13px;color:var(--mute);margin-top:14px;line-height:1.7}
.motif{display:block;width:100%;height:100%}
.m-a{fill:var(--accent)}
.m-l{fill:none;stroke:var(--ink);stroke-width:1.4;vector-effect:non-scaling-stroke}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;border-top:2px solid var(--ink);padding-top:14px;margin-bottom:22px}
.sec-head h2{font-size:22px}
.sec-head .count,.sec-head .more{font-size:14px;color:var(--mute);font-weight:600}
.sec-head .more{text-decoration:none;color:var(--accent)}
.sec-head .more:hover{text-decoration:underline}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--mute);margin-bottom:18px;line-height:1.5}
.crumb a{text-decoration:none}.crumb a:hover{color:var(--accent)}

/* トップ：見出し */
.top-hero{padding:44px 0 36px;border-bottom:1px solid var(--line)}
.hero-h{font-size:clamp(28px,7.4vw,56px);font-weight:800;line-height:1.28;margin:14px 0 18px;max-width:20em;letter-spacing:.015em}
.hero-sub{color:var(--ink2);max-width:40em;font-size:16px}

/* トップ：格子 */
.top-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:56px;padding-top:44px;padding-bottom:72px}
.feature{display:grid;gap:20px;margin-bottom:36px}
.feature-art,.card-art{display:block;position:relative;background:var(--accent-soft);border-radius:var(--r);aspect-ratio:16/9;overflow:hidden}
.feature-art .motif,.card-art .motif{position:absolute;top:9%;height:82%;width:auto;aspect-ratio:1;left:50%;transform:translateX(-50%)}
.feature-body{display:flex;flex-direction:column;gap:12px;justify-content:center}
.feature-h{font-size:clamp(24px,6.2vw,36px);line-height:1.35}
.feature-h a,.card-h a,.row-h a{text-decoration:none}
.feature-h a:hover,.card-h a:hover,.row-h a:hover{color:var(--accent)}
.feature-lead{color:var(--ink2);font-size:16px}
.pair{display:grid;gap:28px;grid-template-columns:minmax(0,1fr);margin-bottom:12px}
.card{display:flex;flex-direction:column;gap:12px}
.card-art{aspect-ratio:2/1}
.card-h{font-size:19px;line-height:1.5}
.rows{display:flex;flex-direction:column}
.row{display:flex;gap:16px;padding:20px 0;border-top:1px solid var(--line)}
.row:last-child{border-bottom:1px solid var(--line)}
.row-thumb{flex:none;width:72px;height:72px;background:var(--accent-soft);border-radius:8px;padding:10px;display:block}
.row-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.row-h{font-size:17px;line-height:1.55;font-weight:700}
.rows-side .row{padding:16px 0}
.rank-tabs{display:flex;gap:4px;background:var(--soft);padding:4px;border-radius:999px;margin-bottom:6px}
.rank-tabs button{flex:1;min-height:40px;border:0;background:transparent;font:inherit;font-weight:700;font-size:14px;color:var(--mute);border-radius:999px;cursor:pointer}
.rank-tabs button[aria-selected=true]{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.rank-cap{display:none;font-size:14px;color:var(--mute);margin:14px 0 4px}
.no-js .rank-tabs{display:none}.no-js .rank-panel[hidden]{display:block}.no-js .rank-cap{display:block}
.rank-list{list-style:none;margin:0;padding:0;counter-reset:r}
.rank-list li{display:flex;gap:14px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--line)}
.rank-n{flex:none;width:28px;font-size:26px;font-weight:800;line-height:1;color:var(--line2);font-feature-settings:"tnum" 1}
.rank-list li:nth-child(-n+3) .rank-n{color:var(--accent)}
.rank-list a{text-decoration:none;font-weight:700;line-height:1.55;font-size:15px}
.rank-list a:hover{color:var(--accent)}
.cat-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(min(100%,150px),1fr))}
.cat-list-lg{grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));gap:16px;padding-bottom:72px}
.cat-card{display:flex;flex-direction:column;gap:10px;padding:18px;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;height:100%}
.cat-card:hover{border-color:var(--accent);background:var(--accent-soft)}
.cat-card .motif{width:44px;height:44px;flex:none}
.cat-name{font-weight:800;font-size:16px;line-height:1.4}
.cat-n{font-size:13px;color:var(--mute)}
.tag-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-flex;gap:10px;align-items:center;min-height:40px;padding:0 14px;border:1px solid var(--line2);border-radius:999px;text-decoration:none;font-weight:700;font-size:14px}
.tag span{font-size:12px;color:var(--mute);font-weight:600}
.tag:hover{border-color:var(--accent);color:var(--accent)}
.trust{list-style:none;margin:0;padding:28px 0 0;border-top:1px solid var(--line);display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
.trust strong{display:block;font-size:16px;margin-bottom:4px}
.trust span{font-size:14px;color:var(--ink2);line-height:1.75}

/* 一覧ページ */
.page-head{padding:36px 0 28px;border-bottom:1px solid var(--line);margin-bottom:36px}
.page-h{font-size:clamp(28px,6.4vw,44px);line-height:1.3}
.page-lead{margin-top:14px;color:var(--ink2);max-width:42em}
.list-wrap{padding-bottom:72px}
.rows-wide{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,440px),1fr));column-gap:48px}
.rows-wide .row:last-child{border-bottom:0}
.rows-wide .row{border-bottom:0}
.ent-list{list-style:none;margin:0;padding:0 0 72px;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:12px}
.ent{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r);text-decoration:none}
.ent:hover{border-color:var(--accent);background:var(--accent-soft)}
.ent-name{font-weight:800;font-size:16px;grid-column:1;line-height:1.5}
.ent-n{font-size:13px;color:var(--accent);font-weight:700;grid-column:2;grid-row:1}
.ent-latest{font-size:13px;color:var(--mute);grid-column:1 / -1}

/* 記事 */
.art-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding-top:32px;padding-bottom:80px}
.art{max-width:760px}
.meta-lg{gap:8px;margin-bottom:16px}
.art-h{font-size:clamp(26px,6.6vw,42px);line-height:1.4;letter-spacing:.01em}
.art-date{margin-top:14px;color:var(--mute);font-size:14px}
.art-sec{margin-top:36px}
.label{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--mute);margin-bottom:12px;display:block}
.three{list-style:none;margin:0;padding:0;counter-reset:n}
.three li{counter-increment:n;display:grid;grid-template-columns:40px 1fr;gap:6px;padding:16px 0;border-top:1px solid var(--line);font-size:18px;line-height:1.85}
.three li:last-child{border-bottom:1px solid var(--line)}
.three li::before{content:counter(n);font-weight:800;font-size:22px;color:var(--accent);line-height:1.5}
.point{background:var(--accent-soft);border-left:3px solid var(--accent);padding:20px 22px;border-radius:0 var(--r) var(--r) 0}
.point .label{color:var(--accent)}
.point p{font-size:17px;line-height:1.9}
.source{margin-top:36px;border:2px solid var(--ink);border-radius:var(--r);padding:24px;display:block}
.src-dl{margin:0 0 20px;display:grid;gap:10px}
.src-dl div{display:grid;grid-template-columns:5.5em 1fr;gap:12px;font-size:15px;line-height:1.6}
.src-dl dt{color:var(--mute);font-weight:700}
.src-dl dd{margin:0;font-weight:700}
.src-host{margin-top:10px;font-size:13px;color:var(--mute);overflow-wrap:anywhere}
.src-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--mute);line-height:1.75}
.art-tools{margin-top:28px;display:flex;flex-direction:column;gap:18px}
.share{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.share .label{margin:0 6px 0 0}
.fix{font-size:14px;color:var(--mute)}
.art-side .label{padding-top:14px;border-top:2px solid var(--ink);margin-bottom:6px;font-size:14px;color:var(--ink)}

/* 固定ページ */
.doc-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:88px}
.doc-toc{display:flex;gap:8px;flex-wrap:wrap}
.doc-toc a{font-size:14px;font-weight:700;text-decoration:none;padding:8px 14px;border:1px solid var(--line2);border-radius:999px;color:var(--ink2)}
.doc-toc a:hover{border-color:var(--accent);color:var(--accent)}
.doc{max-width:760px}
.doc>div{scroll-margin-top:24px}
.doc-sec{padding:0 0 36px}
.doc-sec h2{font-size:22px;margin-bottom:14px;padding-top:12px;border-top:2px solid var(--ink)}
.doc-sec p{margin-bottom:14px;color:var(--ink2)}
.doc-sec ul{margin:0 0 14px;padding-left:1.3em;color:var(--ink2)}
.doc-sec li{margin-bottom:6px}
.op-dl{margin:0;border-top:1px solid var(--line)}
.op-dl div{display:grid;grid-template-columns:8em 1fr;gap:12px;padding:16px 0;border-bottom:1px solid var(--line)}
.op-dl dt{font-weight:700;color:var(--mute)}.op-dl dd{margin:0;font-weight:600}
.tbl{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:20px;display:block;overflow-x:auto}
.tbl th,.tbl td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;white-space:nowrap}
.tbl th{font-size:13px;color:var(--mute);background:var(--soft)}

/* フォーム */
.form{display:grid;gap:22px;max-width:640px}
.f-row{display:grid;gap:8px}
.f-row label,.f-set legend{font-weight:700;font-size:15px}
.form input[type=text],.form input[type=email],.form textarea{width:100%;font:inherit;font-size:16px;line-height:1.6;color:var(--ink);background:#fff;border:1px solid var(--line2);border-radius:8px;padding:12px 14px;min-height:48px}
.form textarea{resize:vertical}
.form input:focus,.form textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.form [aria-invalid=true]{border-color:#b42318;background:#fff8f7}
.f-set{border:0;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.f-set legend{padding:0;margin-bottom:10px;float:left;width:100%}
.radio{position:relative;display:inline-flex}
.radio input{position:absolute;opacity:0;inset:0;cursor:pointer;margin:0}
.radio span{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border:1px solid var(--line2);border-radius:999px;font-weight:700;font-size:15px;background:#fff}
.radio input:checked+span{background:var(--accent);border-color:var(--accent);color:#fff}
.radio input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.f-note{font-size:13px;color:var(--mute);line-height:1.75}
.f-act{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.f-msg{font-size:14px;font-weight:700}
.f-msg.is-ok{color:#246b45}.f-msg.is-err{color:#b42318}

/* フッター */
.site-foot{border-top:1px solid var(--line);background:var(--soft);padding:44px 0 28px}
.foot-grid{display:grid;gap:28px;grid-template-columns:minmax(0,1fr)}
.foot-id p{font-size:14px;color:var(--ink2);margin-top:4px}
.logo-sm{padding:0}
.logo-sm .logo-name{font-size:18px}
.foot-nav{display:flex;flex-wrap:wrap;gap:6px 22px}
.foot-nav a{font-size:14px;font-weight:600;text-decoration:none;color:var(--ink2);min-height:36px;display:inline-flex;align-items:center}
.foot-nav a:hover{color:var(--accent);text-decoration:underline}
.foot-small{display:flex;flex-direction:column;gap:4px;margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:12px;color:var(--mute);line-height:1.7}

/* 640〜 */
@media (min-width:640px){
  :root{--gut:28px}
  .card-art{aspect-ratio:16/9}
  .pair{grid-template-columns:repeat(2,minmax(0,1fr))}
  .trust{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
  .row-thumb{width:88px;height:88px}
  .foot-small{flex-direction:row;justify-content:space-between}
}
/* 768〜 */
@media (min-width:768px){
  .top-hero{padding:64px 0 52px}
  .feature{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:36px;align-items:center}
  .feature-art{aspect-ratio:4/3}
}
/* 1024〜：専用レイアウト（2列・横並びメニュー） */
@media (min-width:1024px){
  :root{--gut:40px;--wrap:1240px}
  .head-row{flex-direction:row;align-items:center;justify-content:space-between;min-height:76px}
  .logo{padding:0}
  .logo-name{font-size:22px}
  .gnav{margin:0;padding:0;overflow:visible;gap:6px}
  .gnav a{padding:0 14px;min-height:76px}
  .gnav a:first-child{padding-left:14px}
  .gnav a[aria-current=page]::after,.gnav a:first-child[aria-current=page]::after{left:14px;right:14px}
  .top-hero{padding:80px 0 64px}
  .hero-h{font-size:clamp(44px,4.2vw,60px)}
  .top-grid{grid-template-columns:minmax(0,1fr) 340px;column-gap:72px;row-gap:56px;align-items:start;grid-template-areas:"new rank" "cat rank" "ent rank" "trust trust"}
  .area-new{grid-area:new}.area-rank{grid-area:rank;position:sticky;top:24px}.area-cat{grid-area:cat}.area-ent{grid-area:ent}.area-trust{grid-area:trust}
  .feature{grid-template-columns:minmax(0,1fr);gap:22px}
  .feature-art{aspect-ratio:16/8}
  .feature-h{font-size:34px}
  .art-grid{grid-template-columns:minmax(0,760px) 320px;column-gap:88px;justify-content:center}
  .art-side{position:sticky;top:24px;align-self:start}
  .doc-grid{grid-template-columns:220px minmax(0,1fr);column-gap:72px;align-items:start;justify-content:center}
  .doc-grid.doc-solo{grid-template-columns:minmax(0,760px);justify-content:start}
  .doc-toc{flex-direction:column;position:sticky;top:24px}
  .doc-toc a{border:0;border-left:2px solid var(--line);border-radius:0;padding:8px 14px}
  .doc-toc a:hover{border-left-color:var(--accent)}
  .page-head{padding:56px 0 40px}
  .foot-grid{grid-template-columns:minmax(0,1fr) minmax(0,2fr);column-gap:72px}
}
/* 1360〜：3列（左に分類と索引／中央に新着／右にランキング） */
@media (min-width:1360px){
  :root{--wrap:1360px}
  .top-grid{grid-template-columns:230px minmax(0,1fr) 340px;column-gap:64px;row-gap:40px;grid-template-rows:auto 1fr auto;grid-template-areas:"cat new rank" "ent new rank" "trust trust trust"}
  .area-cat,.area-ent{position:relative}
  .area-cat .cat-list{grid-template-columns:minmax(0,1fr);gap:0}
  .area-cat .cat-card{flex-direction:row;align-items:center;gap:12px;padding:12px 0;border:0;border-bottom:1px solid var(--line);border-radius:0}
  .area-cat .cat-card:hover{background:transparent}
  .area-cat .cat-card .motif{width:32px;height:32px}
  .area-cat .cat-n{margin-left:auto}
  .area-new .sec-head{margin-bottom:26px}
  .feature-h{font-size:38px}
}
@media (min-width:1800px){
  :root{--wrap:1480px;--gut:48px}
  body{font-size:17px}
  .top-grid{grid-template-columns:260px minmax(0,1fr) 380px;column-gap:80px}
  .feature-h{font-size:42px}
  .art-grid{grid-template-columns:minmax(0,820px) 360px;column-gap:112px}
  .art{max-width:820px}
  .three li{font-size:19px}
  .hero-h{font-size:64px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}