:root{
  --bg:#1a0f2e; --bg2:#241540; --card:#2b1b4d; --card2:#34235c;
  --gold:#f5b942; --gold2:#e08e2b; --pink:#e84393; --txt:#f7f2ff;
  --muted:#c9bce8; --line:#4a3578; --ok:#2ecc71;
}
[data-theme="light"]{
  --bg:#fdf8ef; --bg2:#fff; --card:#fff; --card2:#fff7ea;
  --txt:#2a1a4d; --muted:#6b5a8e; --line:#ead9b8;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--txt);font-family:"Noto Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100vh}
header{position:sticky;top:0;z-index:50;background:linear-gradient(135deg,#4a1d6b,#7c2d8f);padding:12px 14px;display:flex;align-items:center;gap:10px;box-shadow:0 2px 12px rgba(0,0,0,.35)}
.logo{width:40px;height:40px;border-radius:12px;flex:none}
h1.app{font-size:17px;line-height:1.25}
h1.app small{display:block;font-size:11px;color:#ffd98a;font-weight:400}
.hdr-sp{flex:1}
.hbtn{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:10px;padding:7px 11px;font-size:13px;cursor:pointer}
#installBar{display:none;background:linear-gradient(90deg,#e08e2b,#f5b942);color:#3a1c00;padding:10px 14px;font-size:14px;align-items:center;gap:10px}
#installBar.show{display:flex}
#installBar button{background:#3a1c00;color:#ffe9bd;border:0;border-radius:8px;padding:8px 14px;font-weight:700;cursor:pointer}
main{padding:14px 12px 96px;max-width:1100px;margin:0 auto}
.hero{border-radius:18px;overflow:hidden;position:relative;margin-bottom:16px;min-height:150px;background:linear-gradient(135deg,#5b2380,#a03fb5);display:flex;align-items:flex-end}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.hero .t{position:relative;padding:18px;color:#fff}
.hero .t h2{font-size:22px;margin-bottom:4px;text-shadow:0 2px 8px rgba(0,0,0,.5)}
.hero .t p{font-size:13px;color:#ffe9bd}
.sec-t{display:flex;align-items:center;justify-content:space-between;margin:18px 2px 10px}
.sec-t h3{font-size:16px}
.sec-t a{font-size:13px;color:var(--gold);text-decoration:none}
.catgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:10px}
.cat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 8px;text-align:center;cursor:pointer;transition:.15s}
.cat:active{transform:scale(.96)}
.cat .n{font-size:15px;font-weight:700}
.cat .c{font-size:11px;color:var(--muted);margin-top:2px}
.chips{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;background:var(--card);border:1px solid var(--line);color:var(--txt);border-radius:999px;padding:8px 14px;font-size:13px;cursor:pointer}
.chip.on{background:var(--gold);border-color:var(--gold);color:#3a1c00;font-weight:700}
.toolbar{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.toolbar input{flex:1;min-width:150px;background:var(--card);border:1px solid var(--line);color:var(--txt);border-radius:12px;padding:10px 12px;font-size:14px}
.toolbar select{background:var(--card);border:1px solid var(--line);color:var(--txt);border-radius:12px;padding:10px;font-size:13px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
@media(min-width:700px){.grid{grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}}
.tile{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;position:relative}
.tile img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.tile .cap{padding:8px 10px;font-size:12.5px}
.tile .cap .d{color:var(--muted);font-size:11px;margin-top:2px}
.favbtn{position:absolute;top:6px;right:6px;width:34px;height:34px;border-radius:50%;border:0;background:rgba(0,0,0,.5);color:#fff;font-size:17px;cursor:pointer}
.favbtn.on{color:#ff5b8d}
nav.tabs{position:fixed;bottom:0;left:0;right:0;z-index:50;background:var(--bg2);border-top:1px solid var(--line);display:flex;padding:8px 4px calc(8px + env(safe-area-inset-bottom))}
nav.tabs button{flex:1;background:none;border:0;color:var(--muted);font-size:11px;padding:6px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:3px}
nav.tabs button .i{font-size:20px}
nav.tabs button.on{color:var(--gold)}
.modal{position:fixed;inset:0;z-index:100;background:rgba(8,4,18,.92);display:none;flex-direction:column}
.modal.show{display:flex}
.mhead{display:flex;align-items:center;gap:8px;padding:12px}
.mhead .tt{flex:1;font-size:15px;font-weight:700}
.mimg{flex:1;overflow:auto;display:flex;align-items:center;justify-content:center;touch-action:pan-x pan-y}
.mimg img{max-width:100%;max-height:100%;object-fit:contain;transition:transform .2s;cursor:zoom-in}
.mimg.zoom img{transform:scale(2.2);cursor:zoom-out}
.mfoot{padding:12px;display:flex;gap:8px;flex-wrap:wrap}
.abtn{flex:1;min-width:120px;border:0;border-radius:12px;padding:12px;font-size:14px;font-weight:700;cursor:pointer}
.abtn.dl{background:var(--gold);color:#3a1c00}
.abtn.sh{background:#25d366;color:#fff}
.abtn.fv{background:var(--card2);color:var(--txt);border:1px solid var(--line)}
.tip{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px}
.tip h4{font-size:15px;margin-bottom:6px;color:var(--gold)}
.tip p,.tip li{font-size:13.5px;line-height:1.65;color:var(--txt)}
.tip ul{padding-left:18px}
.empty{text-align:center;color:var(--muted);padding:40px 10px;font-size:14px}
.count{font-size:12px;color:var(--muted);margin:2px 2px 10px}
.diff{font-size:10px;padding:2px 8px;border-radius:99px;background:var(--card2);border:1px solid var(--line);color:var(--muted)}
.diff.Easy{color:var(--ok)}.diff.Medium{color:var(--gold)}.diff.Advanced{color:var(--pink)}