:root{--bg:#0b0f14;--surface:#11161d;--surface-2:#161c25;--border:#232b37;--text:#e6edf3;--muted:#9198a1;--faint:#6b7280;--accent:#6ea8fe;--accent-ink:#0b0f14;--green:#3fb950;--amber:#d29922;--red:#f85149;--radius:12px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.container{max-width:880px;margin:0 auto;padding:24px 18px 80px}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:rgba(11,15,20,.85);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.nav-inner{max-width:880px;margin:0 auto;padding:12px 18px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}.brand{font-weight:700;letter-spacing:-.5px;font-size:18px}.brand span{color:var(--accent)}.nav-links{display:flex;gap:4px;flex-wrap:wrap}.nav-links a{padding:6px 12px;border-radius:999px;color:var(--muted);font-size:14px}.nav-links a:hover{color:var(--text);background:var(--surface)}.nav-links a.active{color:var(--text);background:var(--surface-2)}h1{font-size:26px;margin:0 0 4px;letter-spacing:-.5px}h2{font-size:18px;margin:24px 0 12px}.subtitle{margin:0 0 20px}.muted,.subtitle{color:var(--muted)}.faint{color:var(--faint)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));grid-gap:12px;gap:12px}.tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.tile .n{font-size:28px;font-weight:700;letter-spacing:-1px}.tile .l{color:var(--muted);font-size:13px;margin-top:2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);padding:9px 14px;border-radius:10px;font-size:14px;cursor:pointer;transition:background .12s,border-color .12s}.btn:hover{border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}.btn-primary:hover{filter:brightness(1.08)}.btn-danger:hover{border-color:var(--red);color:var(--red)}.btn-sm{padding:5px 10px;font-size:13px;border-radius:8px}.btn-ghost{background:transparent}input,select,textarea{background:var(--surface-2);border:1px solid var(--border);color:var(--text);padding:9px 12px;border-radius:10px;font-size:14px;font-family:inherit;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}textarea{resize:vertical;min-height:90px}label{font-size:13px;color:var(--muted);display:block;margin-bottom:5px}.row{display:flex;gap:10px;flex-wrap:wrap}.row>*{flex:1 1;min-width:120px}.field{margin-bottom:12px}.badge{display:inline-flex;align-items:center;font-size:12px;padding:2px 8px;border-radius:999px;border:1px solid var(--border);color:var(--muted);white-space:nowrap}.badge.new{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 40%,transparent)}.badge.in_progress{color:var(--amber);border-color:color-mix(in srgb,var(--amber) 40%,transparent)}.badge.learned{color:var(--green);border-color:color-mix(in srgb,var(--green) 40%,transparent)}.list{flex-direction:column;gap:8px}.item,.list{display:flex}.item{align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:10px 14px}.item .grow{flex:1 1;min-width:0}.item .t{font-weight:600}.item .tr{color:var(--muted);font-size:14px}.item .meta{gap:6px;margin-top:3px}.item .meta,.toolbar{display:flex;align-items:center;flex-wrap:wrap}.toolbar{gap:10px;margin-bottom:14px}.spacer{flex:1 1}.empty{color:var(--muted);text-align:center;padding:40px 0}.error{color:var(--red);font-size:14px}.pill-link{display:inline-block;padding:8px 14px;border:1px solid var(--border);border-radius:999px}.pill-link:hover{border-color:var(--accent)}@media (max-width:560px){.item{flex-wrap:wrap}h1{font-size:22px}}