:root{
  --bg:#0b0f14; --bg2:#121821; --card:#161d27; --line:#243040;
  --tx:#e6edf5; --tx2:#93a4b8; --acc:#38bdf8; --acc2:#0ea5e9;
  --r:14px; --shadow:0 6px 24px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg); color:var(--tx); font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  -webkit-text-size-adjust:100%;
}
img{display:block}
a{color:var(--acc);text-decoration:none}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 18px}

/* ---------- library ---------- */
.hero{padding:46px 0 22px;background:linear-gradient(180deg,#101725 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero h1{margin:0;font-size:clamp(28px,6vw,42px);letter-spacing:-.02em}
.hero .sub{margin:8px 0 20px;color:var(--tx2)}
#q{
  width:100%;max-width:420px;padding:13px 16px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg2);color:var(--tx);font-size:16px;outline:none;margin-top:18px
}
#q:focus{border-color:var(--acc);box-shadow:0 0 0 3px rgba(56,189,248,.15)}
.stats{color:var(--tx2);font-size:14px;margin:20px 0 14px}
.sec{margin-bottom:34px}
.sec h2{
  font-size:17px;margin:0 0 14px;display:flex;align-items:center;gap:10px;
  padding-bottom:9px;border-bottom:1px solid var(--line);font-weight:600
}
.sec h2 .cnt{
  background:var(--bg2);border:1px solid var(--line);color:var(--tx2);
  font-size:12px;font-weight:600;padding:1px 8px;border-radius:20px
}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));padding-bottom:30px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .15s ease,border-color .15s ease
}
.card:hover{transform:translateY(-3px);border-color:var(--acc)}
.card .cov{aspect-ratio:2/3;background:var(--bg2);position:relative;overflow:hidden}
.card .cov img{width:100%;height:100%;object-fit:cover}
.card .cov .ph{position:absolute;inset:0;display:grid;place-items:center;font-size:40px;color:#33445a}
.card .badge{
  position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.72);border:1px solid var(--line);
  padding:2px 8px;border-radius:20px;font-size:12px;color:var(--tx)
}
.card .meta{padding:11px 12px 13px;display:flex;flex-direction:column;gap:4px;flex:1}
.card .t{font-weight:600;font-size:15px;line-height:1.3}
.card .s{color:var(--tx2);font-size:12.5px}
.card .btn{
  margin-top:9px;text-align:center;padding:9px;border-radius:10px;background:var(--acc2);
  color:#04202e;font-weight:700;font-size:14px
}
.empty{padding:40px 0;color:var(--tx2)}
.foot{padding:22px 0 40px;color:#5b6a7d;font-size:13px}

/* ---------- reader ---------- */
body.reader{background:#05070a;overflow:hidden}
#pbar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--acc);z-index:60;transition:width .2s}
#bar{
  position:fixed;top:0;left:0;right:0;z-index:50;display:flex;gap:8px;align-items:center;
  padding:8px 12px;background:rgba(8,12,18,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
  transition:transform .25s ease,opacity .25s ease
}
#bar.hide{transform:translateY(-110%);opacity:0}
#bar .ttl{flex:1;min-width:0;font-size:14.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#bar .pos{color:var(--tx2);font-size:13px;white-space:nowrap;font-variant-numeric:tabular-nums}
.btn2{
  background:var(--bg2);border:1px solid var(--line);color:var(--tx);padding:8px 11px;border-radius:10px;
  font-size:13px;cursor:pointer;white-space:nowrap
}
.btn2:hover{border-color:var(--acc)}
.btn2.on{border-color:var(--acc);color:var(--acc)}
.btn2.off{opacity:.35;pointer-events:none}
.btn2.nav{font-size:17px;line-height:1;padding:6px 12px;font-weight:700}
.chend{padding:30px 0 70px;display:flex;flex-direction:column;gap:12px;align-items:center}
.btnEnd{
  display:inline-block;background:var(--acc2);color:#04202e;font-weight:700;font-size:15px;
  padding:13px 22px;border-radius:12px;max-width:90%;text-align:center
}
.btnEnd.ghost{background:transparent;border:1px solid var(--line);color:var(--tx2);font-weight:600;padding:11px 20px}
.btnEnd.ghost:hover{border-color:var(--acc);color:var(--tx)}
#stage{position:fixed;inset:0;overflow:auto;-webkit-overflow-scrolling:touch;padding-top:52px}
body.immersive #stage{padding-top:0}
body.immersive #bar{transform:translateY(-110%);opacity:0}
#stage.dua{display:flex;align-items:center;justify-content:center;overflow:hidden}
.pg{width:100%;max-width:1000px;margin:0 auto 10px;position:relative;background:#0d1117;border-radius:4px}
.pg img{width:100%;height:auto}
.pg .ln{position:absolute;top:0;left:0;right:0;text-align:center;color:#4b5a6d;font-size:13px;padding:6px}
.pspin{
  position:absolute;inset:0;display:grid;place-items:center;color:var(--tx2);font-size:13px;
  background:linear-gradient(100deg,#0d1117 30%,#151d28 50%,#0d1117 70%);
  background-size:200% 100%;animation:sh 1.4s linear infinite
}
.pspin::after{content:"";width:26px;height:26px;border:3px solid #23303f;border-top-color:var(--acc);border-radius:50%;animation:sp .8s linear infinite}
.pg.err .pspin{animation:none;background:#241417;color:#fda4af;font-weight:600}
@keyframes sh{from{background-position:200% 0}to{background-position:-200% 0}}
#stage.dua .pg{width:auto;max-width:100%;max-height:calc(100dvh - 56px);margin:0;display:flex;align-items:center;justify-content:center}
#stage.dua .pg img{width:auto;height:auto;max-width:100%;max-height:calc(100dvh - 56px);object-fit:contain;margin:0 auto}
#status{
  position:fixed;inset:0;display:grid;place-items:center;z-index:40;background:#05070a;text-align:center;padding:24px
}
#status .box{max-width:420px}
#status h2{margin:0 0 10px;font-size:19px}
#status p{color:var(--tx2);margin:6px 0;font-size:14px}
#status .track{height:6px;background:#1b2431;border-radius:99px;overflow:hidden;margin:16px 0}
#status .fill{height:100%;width:0;background:var(--acc);transition:width .15s}
.spin{width:33px;height:33px;margin:0 auto 16px;border:3px solid #1e2836;border-top-color:var(--acc);border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.hint{position:fixed;left:0;right:0;bottom:14px;text-align:center;color:#5b6a7d;font-size:12.5px;pointer-events:none}
@media(max-width:560px){
  .grid{gap:13px;grid-template-columns:repeat(auto-fill,minmax(132px,1fr))}
  #bar .ttl{font-size:13px}
}