:root {
  --bg:#f7f9fc; --fg:#0f1720; --muted:#5b6772;
  --surface:#ffffff; --border:#e6ebf2;
  --link:#0b57d0;
  --accent:#c75389; /* young-biz */
  --accent-weak:#f3d6e3;
}
@media (prefers-color-scheme: dark){
  :root{--bg:#0b0c0f;--fg:#e9edf1;--muted:#9aa7b2;
    --surface:#151821;--border:#23293a;
    --link:#84b4ff;--accent:#c75389;--accent-weak:#3a2030;}
}
:root[data-theme="light"]{background:var(--bg);}
:root[data-theme="dark"]{background:var(--bg);}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
     background:var(--bg);color:var(--fg);line-height:1.6;}
a{color:var(--link);}
.container{max-width:1080px;margin:0 auto;padding:0 1rem;}
.site-header{position:sticky;top:0;z-index:10;background:rgba(250,252,255,.8);
  backdrop-filter:blur(6px);border-bottom:1px solid var(--border);}
:root[data-theme="dark"] .site-header{background:rgba(10,12,16,.7);}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:64px;}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:800;color:var(--fg);text-decoration:none;}
.nav a{color:var(--fg);margin-left:1rem;}
.nav .active{border-bottom:2px solid var(--accent);padding-bottom:.2rem;}
.btn{background:var(--accent);color:#fff;border:none;padding:.45rem .7rem;border-radius:.6rem;cursor:pointer;}
.hero{padding:3rem 0;background:linear-gradient(180deg,color-mix(in oklab,var(--accent)10%,transparent),transparent);}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem;margin:1rem 0 2rem;}
.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;}
.card img{width:100%;height:160px;object-fit:cover;}
.card .p{padding:1rem;}
.card .title{font-weight:700;margin:.3rem 0;}
.card .meta{color:var(--muted);font-size:.9rem;}
.site-footer{border-top:1px solid var(--border);padding:1rem 0;color:var(--muted);}

/* Cover + Caption */
.cover-block{margin:.6rem 0 1rem;}
.cover-block .cover{width:100%;max-height:380px;object-fit:cover;
  border-radius:12px;border:1px solid var(--border);display:block;}
.cover-block .caption{font-size:.9rem;color:var(--muted);
  text-align:center;margin-top:.35rem;font-style:italic;}
.main_logo {
  width: 3rem;
  height: 3rem;
  border-radius: 25%;
}