/* AI line academy ブログ 共通スタイル（自己完結・ブランド＝mint/sky/teal） */
:root{
  --ink:#0f172a; --sub:#475569; --mut:#64748b; --line:#e7ecf1; --cream:#f7fafc;
  --mint:#34d399; --sky:#38bdf8; --teal:#0f766e; --teal-d:#0f5e57; --coral:#fb7185;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;color:var(--ink);background:#fff;line-height:1.9;-webkit-font-smoothing:antialiased}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}

/* ヘッダー */
.site-top{border-bottom:1px solid var(--line);background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(6px);position:sticky;top:0;z-index:9}
.site-top .wrap{display:flex;align-items:center;justify-content:space-between;height:58px}
.brand{font-weight:800;font-size:17px;color:var(--teal);letter-spacing:.01em}
.brand b{color:var(--mint)}
.nav a{color:var(--sub);font-weight:700;font-size:13px;margin-left:16px}
.nav a:hover{color:var(--teal);text-decoration:none}
.nav .nav-cta{background:var(--teal);color:#fff;padding:7px 14px;border-radius:999px;font-size:12.5px}
.nav .nav-cta:hover{background:var(--teal-d);color:#fff;text-decoration:none}
@media(max-width:560px){.nav a{margin-left:11px;font-size:12.5px}.nav .opt{display:none}.brand{font-size:15px}.brand .bmark{width:26px;height:26px}}

/* まとめページ */
.blog-head{padding:40px 0 14px}
.blog-head h1{font-size:30px;line-height:1.3;margin:0 0 8px;letter-spacing:.01em}
.blog-head p{color:var(--sub);margin:0;font-size:15px}
.cats{display:flex;flex-wrap:wrap;gap:8px;padding:18px 0 6px}
.cat{border:1.5px solid var(--line);background:#fff;color:var(--sub);font-weight:700;font-size:13px;padding:7px 14px;border-radius:999px;cursor:pointer;transition:.15s}
.cat:hover{border-color:var(--mint);color:var(--teal)}
.cat.on{background:var(--teal);border-color:var(--teal);color:#fff}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:18px 0 60px}
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;padding:18px 18px 16px;background:#fff;box-shadow:0 1px 2px rgba(15,23,42,.04);transition:.15s}
.card:hover{box-shadow:0 6px 22px rgba(15,118,110,.10);transform:translateY(-2px);text-decoration:none;border-color:#cdeee6}
.card .tag{align-self:flex-start;font-size:11.5px;font-weight:800;color:var(--teal);background:#d1fae5;padding:3px 9px;border-radius:999px;margin-bottom:9px}
.card h3{font-size:16px;line-height:1.5;margin:0 0 7px;color:var(--ink)}
.card p{font-size:13px;color:var(--mut);margin:0 0 12px;flex:1}
.card .meta{font-size:11.5px;color:var(--mut);display:flex;gap:8px;align-items:center}
.card .meta .has-tool{color:#9333ea;font-weight:700}
.empty{grid-column:1/-1;color:var(--mut);padding:30px 0;text-align:center}

/* 記事ページ */
.crumb{padding:22px 0 0;font-size:12.5px;color:var(--mut)}
article.post{padding:6px 0 30px}
article.post h1{font-size:28px;line-height:1.4;margin:14px 0 12px;letter-spacing:.01em}
article.post .lead{font-size:16px;color:var(--sub);margin:32px 0 16px;line-height:1.95}
article.post .pmeta{font-size:12.5px;color:var(--mut);padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:24px;display:flex;gap:10px;flex-wrap:wrap}
article.post h2{font-size:21px;margin:38px 0 12px;padding-left:13px;border-left:5px solid var(--teal);line-height:1.45;scroll-margin-top:80px}
article.post h3{font-size:17px;margin:26px 0 8px}
article.post p{margin:0 0 16px}
article.post ul,article.post ol{margin:0 0 16px;padding-left:1.3em}
article.post li{margin:6px 0}
article.post strong{color:var(--teal-d)}
.note{background:var(--cream);border:1px solid var(--line);border-radius:14px;padding:14px 16px;font-size:13.5px;color:var(--sub);margin:18px 0}
.note b{color:var(--teal-d)}
.callout{background:#fff7ed;border:1.5px solid #fcd9a8;border-radius:14px;padding:14px 16px;font-size:13.5px;color:#7c2d12;margin:18px 0}
table.ex{width:100%;border-collapse:collapse;margin:14px 0;font-size:13.5px}
table.ex th,table.ex td{border:1px solid var(--line);padding:9px 11px;text-align:left}
table.ex th{background:var(--cream);font-weight:700}

/* ツール埋め込み */
.tool-embed{margin:22px 0}
.tool-embed .te-label{font-size:13px;font-weight:800;color:var(--teal);margin-bottom:8px;display:flex;align-items:center;gap:7px}
.tool-embed iframe{width:100%;height:720px;border:1px solid var(--line);border-radius:16px;background:#fff}
.tool-embed .te-foot{font-size:12px;color:var(--mut);margin-top:7px}

/* CTA */
.cta{margin:36px 0 10px;border:1px solid #cdeee6;border-radius:20px;padding:24px 22px;background:linear-gradient(180deg,#f0fdfa,#ffffff)}
.cta h3{margin:0 0 6px;font-size:18px}
.cta p{font-size:14px;color:var(--sub);margin:0 0 16px}
.cta-row{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-block;font-weight:800;font-size:14px;padding:11px 18px;border-radius:12px;text-align:center}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-d);text-decoration:none}
.btn-ghost{background:#fff;color:var(--teal);border:1.5px solid var(--teal)}
.btn-ghost:hover{background:#f0fdfa;text-decoration:none}

/* フッター */
.site-foot{border-top:1px solid var(--line);background:var(--cream);margin-top:30px}
.site-foot .wrap{padding:26px 20px;font-size:12.5px;color:var(--mut);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.site-foot a{color:var(--sub)}

/* === 記事の「見る」レイヤー === */
.eyecatch{position:relative;border-radius:20px;overflow:hidden;background:linear-gradient(135deg,#0f766e,#38bdf8);color:#fff;padding:24px 22px;margin:16px 0 6px;display:flex;align-items:center;gap:14px;min-height:148px}
.eyecatch .ec-text{flex:1}
.eyecatch .ec-cat{font-size:12px;font-weight:800;opacity:.95;letter-spacing:.04em;text-shadow:0 1px 6px rgba(0,0,0,.2)}
.eyecatch h1{font-size:25px;line-height:1.42;margin:7px 0 0;color:#fff;border:none;padding:0;text-shadow:0 1px 8px rgba(0,0,0,.18)}
.eyecatch img{width:106px;height:106px;object-fit:contain;flex-shrink:0;filter:drop-shadow(0 5px 14px rgba(0,0,0,.22))}

.toc{background:var(--cream);border:1px solid var(--line);border-radius:16px;padding:15px 20px;margin:22px 0}
.toc b{font-size:13px;color:var(--teal-d);display:block;margin-bottom:8px}
.toc ol{margin:0;padding-left:1.4em}
.toc li{margin:5px 0;font-size:14px}

.share{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:14px 0}
.share .lab{font-size:12px;color:var(--mut);font-weight:700}
.share a,.share button{font-size:12.5px;font-weight:800;color:#fff;padding:7px 13px;border-radius:999px;text-decoration:none;border:none;cursor:pointer;font-family:inherit}
.share a:hover,.share button:hover{opacity:.88;text-decoration:none}
.s-x{background:#000}.s-line{background:#06c755}.s-fb{background:#1877f2}.s-copy{background:var(--teal)}

.mascot-line{display:flex;gap:12px;align-items:flex-start;margin:22px 0}
.mascot-line img{width:62px;height:62px;object-fit:contain;flex-shrink:0}
.mascot-line .bubble{background:#f0fdfa;border-radius:14px;padding:11px 15px;font-size:13.5px;color:var(--teal-d);line-height:1.7}

.fig{margin:20px 0;border:1px solid var(--line);border-radius:16px;padding:16px 16px 12px;background:#fff}
.fig svg{width:100%;height:auto;display:block}
.fig figcaption{font-size:12px;color:var(--mut);text-align:center;margin-top:8px}

.checklist{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}
.checklist .col{border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.checklist .col.ok{border-color:#86efac;background:#f0fdf4}
.checklist .col.ng{border-color:#fca5a5;background:#fef2f2}
.checklist h4{margin:0 0 8px;font-size:14px}
.checklist .col.ok h4{color:#15803d}.checklist .col.ng h4{color:#b91c1c}
.checklist ul{margin:0;padding-left:1.1em;font-size:12.5px}
.checklist li{margin:5px 0}

/* マーカー・吹き出し強化・要点ボックス（=見るレイヤー） */
.mark{background:linear-gradient(transparent 58%, #fde68a 58%);font-weight:700;padding:0 1px}
.mark-t{background:linear-gradient(transparent 58%, #99f6e4 58%);font-weight:700;padding:0 1px}
.mascot-line .bubble{position:relative}
.mascot-line .bubble::after{content:"";position:absolute;left:-7px;top:15px;width:0;height:0;border:7px solid transparent;border-right-color:#f0fdfa}
.kpoint{display:flex;gap:10px;align-items:flex-start;background:#fffbeb;border:1.5px solid #fde68a;border-radius:14px;padding:13px 16px;margin:18px 0;font-size:14px;line-height:1.78}
.kpoint .k{font-weight:800;color:#b45309;flex-shrink:0}

@media(max-width:600px){
  .grid{grid-template-columns:1fr}
  .blog-head h1{font-size:24px}
  article.post h1{font-size:23px}
  .tool-embed iframe{height:780px}
  .checklist{grid-template-columns:1fr}
  .eyecatch{flex-direction:column;text-align:center;min-height:0}
  .eyecatch h1{font-size:21px}
  .eyecatch img{width:88px;height:88px}
}

/* ===== 動き（旧来ブログとの差別化）===== */
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes shine{0%{left:-60%}55%,100%{left:130%}}
@keyframes arrowx{0%,100%{transform:translateX(0)}50%{transform:translateX(4px)}}
.mascot-line img,.dialog img{animation:floaty 3.6s ease-in-out infinite}
.eyecatch img{animation:floaty 4.6s ease-in-out infinite}
.btn-primary{position:relative;overflow:hidden}
.btn-primary::after{content:"";position:absolute;top:0;left:-60%;width:42%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-18deg);animation:shine 3.4s ease-in-out infinite;pointer-events:none}
.btn-primary .arw{display:inline-block;animation:arrowx 1.1s ease-in-out infinite}
/* スクロールで現れる・マーカーが引かれる */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
.mark,.mark-t{background-repeat:no-repeat;background-size:0% 100%;transition:background-size .55s ease .12s}
.mark{background-image:linear-gradient(transparent 58%,#fde68a 58%)}
.mark-t{background-image:linear-gradient(transparent 58%,#99f6e4 58%)}
.mark.in,.mark-t.in{background-size:100% 100%}
.no-reveal .reveal{opacity:1;transform:none}
.no-reveal .mark,.no-reveal .mark-t{background-size:100% 100%}
@media(prefers-reduced-motion:reduce){
  .mascot-line img,.dialog img,.eyecatch img,.btn-primary::after,.btn-primary .arw{animation:none}
  .reveal{opacity:1;transform:none}.mark,.mark-t{background-size:100% 100%}
}

/* ===== 掛け合い（ミライネコ ⇄ 新夢シャド）===== */
.dialog{display:flex;gap:11px;align-items:flex-start;margin:20px 0}
.dialog .av{display:flex;flex-direction:column;align-items:center;gap:3px;flex-shrink:0;width:58px}
.dialog .av img{width:54px;height:54px;border-radius:50%;object-fit:cover;background:#fff;border:2px solid #cdeee6}
.dialog .av span{font-size:10px;font-weight:800;color:var(--mut);text-align:center;line-height:1.2}
.dialog .bubble{background:#f0fdfa;border-radius:14px;padding:11px 15px;font-size:13.5px;color:var(--teal-d);line-height:1.75;position:relative;flex:1}
.dialog .bubble::after{content:"";position:absolute;left:-7px;top:15px;width:0;height:0;border:7px solid transparent;border-right-color:#f0fdfa}
.dialog.right{flex-direction:row-reverse}
.dialog.right .av img{border-color:#bfdbfe}
.dialog.right .bubble{background:#eff6ff;color:#1e3a5f}
.dialog.right .bubble::after{left:auto;right:-7px;border-right-color:transparent;border-left-color:#eff6ff}

/* ===== 目次（折りたたみ）===== */
details.toc{background:var(--cream);border:1px solid var(--line);border-radius:16px;padding:4px 20px;margin:22px 0}
details.toc summary{font-size:13px;color:var(--teal-d);font-weight:800;cursor:pointer;padding:11px 0;list-style:none}
details.toc summary::-webkit-details-marker{display:none}
details.toc summary::before{content:"▸ ";color:var(--teal)}
details.toc[open] summary::before{content:"▾ "}
details.toc ol{margin:2px 0 12px;padding-left:1.4em}
details.toc li{margin:5px 0;font-size:14px}

/* ===== SNSアイコン ===== */
.share a svg,.share button svg{width:14px;height:14px;vertical-align:-2px;margin-right:5px;fill:currentColor}

/* ===== 著者ボックス ===== */
.author-box{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);border-radius:18px;padding:20px;margin:30px 0 10px;background:linear-gradient(180deg,#f7fafc,#fff)}
.author-box .av{width:84px;height:84px;border-radius:50%;object-fit:cover;flex-shrink:0;border:3px solid #cdeee6}
.author-box .who{font-size:12px;color:var(--mut);font-weight:700}
.author-box h4{margin:3px 0 7px;font-size:17px}
.author-box p{font-size:13px;color:var(--sub);margin:0 0 11px;line-height:1.85}
.author-box .links{display:flex;gap:8px;flex-wrap:wrap}
.author-box .links a{font-size:12.5px;font-weight:800;padding:7px 13px;border-radius:999px;border:1.5px solid var(--teal);color:var(--teal)}
.author-box .links a:hover{background:#f0fdfa;text-decoration:none}

/* ===== ヘッダーロゴ（アカデミーと統一）===== */
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:16px;color:#0f172a}
.brand .bmark{width:30px;height:30px;border-radius:9px;object-fit:cover;flex-shrink:0}
.brand .bw b{color:#1d4ed8;font-weight:800}
.brand .bw i{color:#0f766e;font-style:normal}
@media(max-width:600px){.author-box{flex-direction:column}.dialog .bubble{font-size:13px}}