:root{
  --teal:#0E5E6F; --teal2:#11788c; --teal-bg:#e8f3f4;
  --green:#1f8a5b; --green-bg:#e6f4ec;
  --ink:#1f2a2e; --gray:#6b7b80; --line:#dce8e8;
  --bg:#f5f8f8; --card:#ffffff;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.topbar{background:linear-gradient(135deg,var(--teal),var(--teal2));color:#fff;padding:22px 0;
  box-shadow:0 2px 12px rgba(14,94,111,.2)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:14px}
.logo{font-size:34px;line-height:1}
.topbar h1{margin:0;font-size:21px;font-weight:700}
.sub{margin:2px 0 0;font-size:13px;opacity:.85}
.gh{color:#fff;text-decoration:none;font-size:13px;opacity:.9;border:1px solid rgba(255,255,255,.5);
  padding:6px 12px;border-radius:8px}
.gh:hover{background:rgba(255,255,255,.12)}

.controls{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:22px auto 8px}
.search{flex:1;min-width:240px}
.search input{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;outline:none;background:#fff}
.search input:focus{border-color:var(--teal2);box-shadow:0 0 0 3px var(--teal-bg)}
select{padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px;background:#fff;
  color:var(--ink);outline:none;cursor:pointer}
.count{font-size:13px;color:var(--gray);margin-left:auto}
.btn-all{border:none;background:var(--teal);color:#fff;padding:11px 16px;border-radius:10px;
  font-size:14px;cursor:pointer;font-weight:600}
.btn-all:hover{background:var(--teal2)}
.btn-all:disabled{opacity:.6;cursor:progress}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:14px auto 40px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 16px 14px;
  display:flex;flex-direction:column;transition:box-shadow .15s,transform .15s}
.card:hover{box-shadow:0 6px 20px rgba(14,94,111,.12);transform:translateY(-2px)}
.card h3{margin:0;font-size:16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ver{font-size:11px;font-weight:600;color:var(--teal2);background:var(--teal-bg);
  padding:2px 7px;border-radius:6px}
.slug{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--gray);margin:4px 0 8px}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.tag{font-size:11px;padding:2px 8px;border-radius:20px}
.tag.m{background:#eaf0fb;color:#34518f}
.tag.c{background:var(--green-bg);color:var(--green)}
.desc{font-size:13px;color:#41525a;margin:0 0 12px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.note{font-size:11px;color:#b06a00;background:#fff6e6;padding:4px 8px;border-radius:6px;margin-bottom:8px}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between}
.dls{font-size:12px;color:var(--gray)}
.btn-dl{border:none;background:var(--green);color:#fff;padding:8px 14px;border-radius:9px;
  font-size:13px;font-weight:600;cursor:pointer}
.btn-dl:hover{background:#176c47}
.btn-dl:disabled{opacity:.6;cursor:progress}

.foot{color:var(--gray);font-size:12px;text-align:center;padding:24px 20px 40px}
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:10px;font-size:13px;opacity:0;
  pointer-events:none;transition:.25s;z-index:50}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}