:root{
  --bg:#0e1020; --panel:#171a2e; --panel2:#1d2138; --line:#2a2f4a;
  --ink:#eef1f7; --dim:#9aa1c0; --accent:#7c5cff; --accent2:#00c2b8;
}
*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);min-height:100vh;
  background:
    radial-gradient(1200px 600px at 10% 0%, #6a5cff33, transparent 60%),
    radial-gradient(1000px 600px at 95% 10%, #00c2b833, transparent 60%),
    linear-gradient(160deg,#0e1020,#141830 60%,#0b0d18);
  padding-bottom:60px;
}
.topbar{display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  padding:20px 28px;border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:10;background:rgba(14,16,32,.72);backdrop-filter:blur(14px)}
.brand{font-size:20px;font-weight:800;letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.brand .logo{color:var(--accent)}
.brand .sub{font-size:12px;color:var(--dim);font-weight:500;letter-spacing:.2em}
.search{margin-left:auto;width:min(360px,50vw);padding:11px 16px;border-radius:12px;
  border:1px solid var(--line);background:var(--panel);color:var(--ink);font-size:14px;outline:none}
.search:focus{border-color:var(--accent)}

.tabs{display:flex;gap:10px;flex-wrap:wrap;padding:18px 28px 6px}
.tab{padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:var(--panel);
  color:var(--dim);font-size:13px;font-weight:600;cursor:pointer;transition:.18s}
.tab:hover{color:var(--ink);border-color:var(--accent)}
.tab.on{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border-color:transparent}
.tab .cnt{opacity:.7;font-size:11px;margin-left:6px}

.hint{padding:14px 28px 6px;color:var(--dim);font-size:13px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px;padding:14px 28px 40px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-4px);border-color:var(--accent)}
.preview{height:180px;background:repeating-conic-gradient(#0000 0 25%,#ffffff08 0 50%) 50%/22px 22px;
  border-bottom:1px solid var(--line)}
.preview iframe{width:100%;height:100%;border:0;display:block}
.meta{padding:14px 16px;display:flex;flex-direction:column;gap:10px}
.meta h3{font-size:15px;font-weight:700}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:11px;padding:2px 9px;border-radius:999px;background:var(--panel2);color:var(--dim);border:1px solid var(--line)}
.copy{margin-top:2px;padding:10px 0;border-radius:11px;border:0;cursor:pointer;font-weight:800;font-size:13px;
  color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));letter-spacing:.05em;transition:.18s}
.copy:hover{filter:brightness(1.1)}
.copy:active{transform:scale(.98)}
.foot{padding:30px 28px;color:var(--dim);font-size:12.5px;line-height:1.9;border-top:1px solid var(--line);margin:0 28px}

.toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);opacity:0;pointer-events:none;
  background:var(--accent);color:#fff;padding:12px 22px;border-radius:12px;font-size:14px;font-weight:700;
  transition:.25s;z-index:50;box-shadow:0 10px 30px #7c5cff66}
.toast.show{opacity:1;transform:translate(-50%,0)}