:root{--green: #4a7729;--green-d: #3a5d20;--green-l: #eaf3e0;--green-ck: #5a8a2f;--ink: #1f2328;--muted: #5b636b;--line: #e2e6ea;--bg: #f6f8f4;--card: #ffffff;--red: #c0392b;--red-l: #fdecea;--amber: #b8860b;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:var(--green-d)}.hidden{display:none!important}.nav{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav .in{max-width:960px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:12px 18px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.2px}.brand .logo{width:34px;height:34px;border-radius:8px;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px}.nav a.link{text-decoration:none;color:var(--muted);font-weight:600;font-size:14px;padding:6px 4px;border-bottom:2px solid transparent}.nav a.link.active{color:var(--green-d);border-color:var(--green)}.nav .sp{flex:1}.nav .who{font-size:13px;color:var(--muted)}.wrap{max-width:960px;margin:0 auto;padding:26px 18px 80px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:22px}h1{font-size:22px;margin:0 0 4px;letter-spacing:-.3px}h2{font-size:18px;margin:0 0 10px}h3{font-size:15px;margin:0 0 8px}.lead{color:var(--muted);margin:0 0 18px;font-size:14.5px}.muted{color:var(--muted)}.btn{background:var(--green);color:#fff;border:none;border-radius:10px;padding:12px 22px;font-size:15px;font-weight:700;cursor:pointer;transition:.12s}.btn:hover{background:var(--green-d)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.ghost{background:#fff;color:var(--green-d);border:1.5px solid var(--line)}.btn.ghost:hover{border-color:var(--green);background:var(--green-l)}.btn.sm{padding:9px 16px;font-size:13.5px}.btn.block{width:100%}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.sp{flex:1}.grid{display:grid;gap:16px}.grid.c2{grid-template-columns:1fr 1fr}.grid.c3{grid-template-columns:repeat(3,1fr)}.grid.c4{grid-template-columns:repeat(4,1fr)}@media (max-width: 720px){.grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}}.opts{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1.5px solid var(--line);background:#fff;border-radius:10px;padding:9px 14px;font-size:13.5px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:.12s;font-weight:600;color:var(--muted)}.chip:hover{border-color:#c3ccb6}.chip.active{border-color:var(--green);background:var(--green-l);color:var(--green-d)}.field{margin-bottom:16px}.field>label{display:block;font-weight:700;font-size:13px;margin-bottom:8px}input.txt{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:11px 13px;font-size:15px;font-family:inherit}input.txt:focus{outline:none;border-color:var(--green)}.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}.stat .k{font-size:12px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.4px}.stat .v{font-size:28px;font-weight:800;margin-top:4px;letter-spacing:-.5px}.stat .v small{font-size:14px;color:var(--muted);font-weight:600}.modcard{display:flex;flex-direction:column;gap:8px;border:1.5px solid var(--line);border-radius:12px;padding:16px;background:#fff}.modcard .top{display:flex;align-items:center;gap:10px}.modcard .n{width:30px;height:30px;border-radius:8px;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;flex:none}.modcard.soon{opacity:.6}.modcard.soon .n{background:#b9c2ca}.modcard .t{font-weight:700;font-size:15px}.modcard .d{font-size:12.5px;color:var(--muted)}.pill{display:inline-block;font-size:11px;font-weight:700;border-radius:20px;padding:3px 10px}.pill.due{background:var(--amber);color:#fff}.pill.count{background:var(--green-l);color:var(--green-d)}.pbar{height:7px;background:var(--line);border-radius:5px;overflow:hidden;margin-bottom:6px}.pbar>i{display:block;height:100%;background:var(--green);transition:width .3s}.qmeta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:14px}.timer{font-variant-numeric:tabular-nums;font-weight:800;font-size:14px;padding:4px 10px;border-radius:8px;background:var(--green-l);color:var(--green-d)}.timer.warn{background:#fdf0d9;color:var(--amber)}.timer.danger{background:var(--red-l);color:var(--red)}.tag{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;color:var(--green-d);background:var(--green-l);border-radius:6px;padding:3px 8px;margin-bottom:12px}.qtext{font-size:16.5px;font-weight:600;margin:0 0 4px}.qhint{font-size:13px;color:var(--muted);margin:6px 0 16px}.qhint b{color:var(--ink)}.choice{display:flex;align-items:flex-start;gap:11px;border:1.5px solid var(--line);border-radius:11px;padding:12px 14px;margin-bottom:9px;cursor:pointer;transition:.1s;background:#fff}.choice:hover{border-color:#c3ccb6;background:#fafcf7}.choice.radio .box{border-radius:50%}.choice .box{width:20px;height:20px;border:2px solid #b9c2ca;border-radius:5px;flex:none;margin-top:1px;display:flex;align-items:center;justify-content:center;font-size:13px;color:#fff}.choice.sel{border-color:var(--green);background:var(--green-l)}.choice.sel .box{background:var(--green);border-color:var(--green)}.choice.correct{border-color:var(--green-ck);background:var(--green-l)}.choice.correct .box{background:var(--green-ck);border-color:var(--green-ck)}.choice.wrong{border-color:var(--red);background:var(--red-l)}.choice.wrong .box{background:var(--red);border-color:var(--red)}.choice.missed{border-color:var(--green-ck);border-style:dashed}.choice.locked{cursor:default;pointer-events:none}.assign{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap}.assign .prompt{flex:1;min-width:200px;border:1.5px solid var(--line);border-radius:10px;padding:11px 13px;font-size:14px;background:#fbfcfa}.assign select{border:1.5px solid var(--line);border-radius:9px;padding:10px 12px;font-size:14px;background:#fff;min-width:200px;font-family:inherit;color:var(--ink);cursor:pointer}.assign select:focus{outline:none;border-color:var(--green)}.assign select.ok{border-color:var(--green-ck);background:var(--green-l)}.assign select.bad{border-color:var(--red);background:var(--red-l)}.arrow{color:#aeb7bf;font-size:18px}@media (max-width: 560px){.assign select,.assign .prompt{min-width:140px;flex:1}}.fb{border-radius:11px;padding:13px 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13px;font-size:13.5px;margin-bottom:14px}.foot{text-align:center;color:#9aa2aa;font-size:11.5px;margin-top:30px;line-height:1.6}.spin{text-align:center;padding:60px;color:var(--muted)}