:root{
  --ink:#0f172a; --muted:#64748b; --card:#ffffff; --line:#e2e8f0;
  --accent:#00D1B2; --accent2:#62A8FF;
  --shadow: 0 18px 50px rgba(2,6,23,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f6f8fb 0%, #eef2f7 100%);
}
.hero img{width:100%;display:block}

.navbar{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.72);
  border-bottom: 1px solid rgba(226,232,240,0.9);
}
.navbar .wrap{
  max-width: 1120px;
  margin: 0 auto;
  padding: 12px 18px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
}
.brand{display:flex; align-items:center; gap:10px; font-weight: 850; letter-spacing: -0.2px;}
.brand .dot{width:10px;height:10px;border-radius:999px;background: linear-gradient(90deg, var(--accent), var(--accent2));}
.navlinks{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.navlinks a{text-decoration:none;color:#0f172a;font-weight:700;padding:8px 10px;border-radius:10px}
.navlinks a:hover{background:rgba(226,232,240,.7)}
.navlinks a[aria-current="page"]{background:rgba(226,232,240,.92)}

main{max-width:1120px;margin:26px auto 44px;padding:0 18px}
.card{background: var(--card);border: 1px solid var(--line);border-radius: 18px;padding: 22px;box-shadow: var(--shadow);}
.h1{font-size:34px;margin:0 0 8px;letter-spacing:-.6px}
.lead{color:var(--muted);margin:0 0 18px;line-height:1.6}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.tile{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fbfdff;display:flex;flex-direction:column;gap:10px}
.tile h3{margin:0;font-size:16px;letter-spacing:-.2px}
.tile p{margin:0;color:var(--muted);line-height:1.55;font-size:14px}
.meta{color:var(--muted);font-size:13px}
.thumb{width:100%;aspect-ratio:16/9;border-radius:12px;object-fit:cover;border:1px solid rgba(226,232,240,.9);background:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;margin-top:auto;padding:10px 12px;border-radius:12px;border:1px solid rgba(226,232,240,.9);background:#fff;text-decoration:none;color:#0f172a;font-weight:850;font-size:14px}
.btn:hover{border-color:rgba(148,163,184,.9)}
.notice{border:1px dashed rgba(148,163,184,.9);background: rgba(255,255,255,.65);border-radius: 16px;padding: 14px 16px;color: var(--muted);line-height: 1.55;font-size: 14px;margin-bottom: 14px}
/* scroll sub-menu */
.submenu{position:sticky;top:58px;z-index:40;margin:12px 0 18px}
.submenu .bar{display:flex;gap:10px;overflow-x:auto;padding:10px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.85);-webkit-overflow-scrolling:touch}
.submenu .bar::-webkit-scrollbar{height:8px}
.submenu .bar::-webkit-scrollbar-thumb{background:rgba(148,163,184,.5);border-radius:999px}
.pill{white-space:nowrap;display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:#0f172a;font-weight:850;font-size:14px;padding:10px 12px;border-radius:999px;border:1px solid rgba(226,232,240,.9);background:#fff}
.pill:hover{border-color:rgba(148,163,184,.9)}
.pill .tag{width:8px;height:8px;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent2))}
.section{margin-top:16px;padding-top:8px}
.section h2{margin:0 0 8px;font-size:18px;letter-spacing:-.2px}
.section .meta{color:var(--muted);margin:0 0 14px;line-height:1.6;font-size:14px}
hr.sep{border:0;border-top:1px solid var(--line);margin:18px 0}
.article-hero{display:flex;flex-direction:column;gap:10px}
.article-hero h1{margin:0;font-size:30px;letter-spacing:-.4px}
.article-hero .date{color:var(--muted);font-size:13px}
.article-hero img{width:100%;aspect-ratio:16/9;border-radius:14px;object-fit:cover;border:1px solid rgba(226,232,240,.9)}
.content{color:#0f172a;line-height:1.7}

/* Login overlay (client-side) */
.lock{position: fixed; inset: 0; z-index: 1000;display:flex; align-items:center; justify-content:center;background: rgba(7,10,18,0.78);backdrop-filter: blur(10px);padding: 18px}
.lock .panel{width: min(760px, 100%);background:#ffffff;border:1px solid rgba(226,232,240,.9);border-radius:18px;padding:18px;box-shadow: 0 24px 70px rgba(2,6,23,.35)}
.lock h1{margin:0 0 8px;font-size:18px}
.lock p{margin:0 0 12px;color:var(--muted);line-height:1.5}
.lock .row{display:flex;gap:10px;align-items:center}
.lock input{flex:1}
.lock .err{display:none;color:#b91c1c;font-size:13px;margin-top:8px}

/* CMS editor */
.form{display:grid;gap:12px}
label{font-weight:850;font-size:13px}
input,textarea{width:100%;padding:10px 12px;border-radius:12px;border:1px solid rgba(226,232,240,.9);background:#fff;font:inherit}
textarea{min-height:110px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.small{font-size:12px;color:var(--muted)}
footer{padding:26px 18px 40px;text-align:center;color:var(--muted);font-size:13px}