/* AI社員 ブログ 共通スタイル */
:root{
  --pri:#0B5FFF;--pri-dark:#0848C2;--accent:#FF6B47;
  --bg:#F5F6FA;--ink:#111;--muted:#5A6378;--line:#E3E6EE;--on:#fff;--yel:#FFE082;
  --container:820px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic",system-ui,-apple-system,sans-serif;
  color:var(--ink);background:#fff;line-height:1.8;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--pri);text-decoration:none}
a:hover{color:var(--pri-dark);text-decoration:underline}

/* header */
.b-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);box-shadow:0 2px 8px rgba(17,17,17,.05)}
.b-header-inner{max-width:1120px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:16px}
.b-logo{display:flex;align-items:center;gap:8px;font-weight:900;color:var(--ink);font-size:18px}
.b-logo:hover{text-decoration:none;color:var(--ink)}
.b-logo .mark{font-size:22px}
.b-nav{display:flex;gap:6px;flex:1;justify-content:center;flex-wrap:wrap}
.b-nav a{padding:8px 12px;border-radius:999px;color:var(--ink);font-size:14px;font-weight:500}
.b-nav a:hover{background:var(--bg);text-decoration:none}
.b-cta{background:var(--pri);color:var(--on);padding:10px 16px;border-radius:999px;font-weight:700;font-size:14px;white-space:nowrap}
.b-cta:hover{background:var(--pri-dark);color:var(--on);text-decoration:none}
@media(max-width:720px){.b-nav{display:none}}

/* layout */
.wrap{max-width:var(--container);margin:0 auto;padding:0 20px}
.page-head{background:linear-gradient(180deg,#EEF3FF,#fff);padding:48px 20px 32px;border-bottom:1px solid var(--line)}
.page-head .wrap{padding:0 20px}
.eyebrow{color:var(--pri);font-weight:700;font-size:13px;letter-spacing:.08em;margin:0 0 8px}
h1{font-size:28px;line-height:1.5;margin:0 0 12px}
.lead{color:var(--muted);font-size:15px;margin:0}
main{padding:40px 0 24px}

/* article list */
.post-list{list-style:none;padding:0;margin:0;display:grid;gap:20px}
.post-card{border:1px solid var(--line);border-radius:14px;padding:22px;transition:box-shadow .15s,transform .15s;background:#fff}
.post-card:hover{box-shadow:0 12px 30px rgba(11,95,255,.10);transform:translateY(-2px)}
.post-card a{color:inherit}
.post-card a:hover{text-decoration:none}
.post-meta{font-size:12px;color:var(--muted);margin:0 0 8px;display:flex;gap:10px;flex-wrap:wrap}
.tag{display:inline-block;background:#EEF3FF;color:var(--pri);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:700}
.post-card h2{font-size:18px;margin:0 0 8px;color:var(--ink)}
.post-card p{font-size:14px;color:var(--muted);margin:0}

/* article body */
.article p{margin:0 0 18px}
.article h2{font-size:22px;margin:36px 0 14px;padding-left:12px;border-left:4px solid var(--pri);line-height:1.5}
.article h3{font-size:17px;margin:26px 0 10px}
.article ul,.article ol{margin:0 0 18px;padding-left:1.4em}
.article li{margin:6px 0}
.article .note{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:13.5px;color:var(--muted)}
.article strong{font-weight:700}
.byline{font-size:13px;color:var(--muted);margin:0 0 4px}
hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.back{display:inline-block;margin:8px 0 0;font-size:14px}

/* inline CTA */
.cta-box{margin:40px 0 8px;background:linear-gradient(120deg,#0B5FFF,#FF6B47);border-radius:16px;padding:28px 24px;color:#fff;text-align:center}
.cta-box p{margin:0 0 14px;font-weight:700;font-size:16px;color:#fff}
.cta-box .btn{display:inline-block;background:#fff;color:var(--pri);font-weight:800;padding:12px 22px;border-radius:999px}
.cta-box .btn:hover{text-decoration:none;background:#EEF3FF}

/* footer */
.b-footer{background:#0E1A2E;color:#C0C8D8;margin-top:56px;padding:36px 20px 20px}
.b-footer-inner{max-width:1120px;margin:0 auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.b-footer a{color:#C0C8D8}
.b-footer a:hover{color:#fff;text-decoration:none}
.b-foot-brand{font-weight:900;color:#fff;font-size:18px;margin:0 0 6px}
.b-foot-links{display:flex;gap:16px;flex-wrap:wrap;font-size:13px}
.b-foot-bottom{max-width:1120px;margin:24px auto 0;padding-top:16px;border-top:1px solid #1F2D44;font-size:12px;color:#7889A0;text-align:center}

/* share row */
.share{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:36px 0 8px;padding-top:20px;border-top:1px solid var(--line)}
.share-label{font-size:13px;color:var(--muted);font-weight:700;margin-right:2px}
.share-btn{display:inline-block;font:inherit;font-size:13px;font-weight:700;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;text-decoration:none;line-height:1}
.share-btn:hover{background:var(--bg);text-decoration:none}