.practice-hero{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:185px;padding:28px 32px;margin-bottom:20px;border-radius:25px;color:#fff;background:linear-gradient(125deg,#163c35,#276b5b 58%,#3d846d);box-shadow:0 18px 42px rgba(28,73,61,.2)}
.practice-hero>div>span{font-size:10px;letter-spacing:2px;font-weight:900;color:#aee4d0}.practice-hero h2{margin:8px 0 7px;font-size:30px}.practice-hero p{max-width:570px;margin:0;color:#d4ebe2;font-size:13px;line-height:1.7}.practice-streak{display:flex;gap:13px;align-items:center;margin-top:17px}.practice-streak b{padding:7px 11px;border-radius:9px;background:#ffd66b;color:#4e5834;font-size:11px}.practice-streak small{color:#c4dfd5}
.practice-rings{display:grid!important;grid-template-columns:repeat(3,1fr);min-width:280px;padding:14px;border:1px solid rgba(255,255,255,.16);border-radius:18px;background:rgba(255,255,255,.09)}.practice-rings>div{display:grid;place-items:center;padding:8px;border-right:1px solid rgba(255,255,255,.15)}.practice-rings>div:last-child{border:0}.practice-rings b{font-size:23px}.practice-rings small{font-size:9px;color:#cce3da}
.practice-paths{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}.practice-paths button{display:grid;grid-template-columns:40px 1fr 18px;align-items:center;gap:10px;padding:14px;text-align:left;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);cursor:pointer}.practice-paths button>span{width:40px;height:40px;display:grid;place-items:center;border-radius:11px;background:#edf6f1;font-size:20px}.practice-paths b,.practice-paths small{display:block}.practice-paths b{font-size:12px}.practice-paths small{margin-top:4px;color:var(--muted);font-size:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.practice-paths i{font-style:normal;color:var(--green)}
.practice-filters{grid-template-columns:1.3fr 1fr .8fr .9fr}.practice-workspace{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(310px,.8fr);gap:14px;align-items:start}.problem-table-head,.problem-row{display:grid;grid-template-columns:48px minmax(170px,1fr) 68px 62px 70px;align-items:center}.problem-table-head{padding:0 14px 8px;color:#8a9993;font-size:9px;font-weight:900}.problem-list{overflow:hidden;border:1px solid var(--line);border-radius:15px;background:#fff}.problem-row{min-height:68px;padding:0 14px;border-bottom:1px solid #eceeea;cursor:pointer}.problem-row:hover,.problem-row.active{background:#f2f8f5}.problem-row.active{box-shadow:inset 3px 0 var(--green)}
.problem-status{width:24px;height:24px;display:grid;place-items:center;border-radius:50%;border:1px solid #ccd7d1;color:#a5b1ac;font-weight:900}.problem-status.solved{background:#dff2e8;color:#267257}.problem-status.wrong{background:#fff0e2;color:#b26728}.problem-title{min-width:0}.problem-title b,.problem-title small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.problem-title b{font-size:12px}.problem-title small{margin-top:5px;color:var(--muted);font-size:9px}.level{width:max-content;padding:5px 8px;border-radius:99px;font-size:9px;font-weight:900}.level.easy{background:#e4f4eb;color:#33775d}.level.medium{background:#fff2d5;color:#916814}.level.hard{background:#f8e6e4;color:#9a4b47}.attempt-count{color:var(--muted);font-size:10px}.problem-row-actions{display:flex;justify-content:flex-end}.favorite{border:0;background:transparent;color:#aab4b0;font-size:19px;cursor:pointer}.favorite.on{color:#e1a628}.row-select input{display:none}.row-select span{width:25px;height:25px;display:grid;place-items:center;border:1px solid #cad7d1;border-radius:7px}.row-select input:checked+span{background:var(--green);color:#fff;transform:rotate(45deg)}
.problem-detail{position:sticky;top:8px;min-height:390px;padding:20px}.problem-placeholder{min-height:340px;display:grid;place-content:center;text-align:center;color:var(--muted)}.problem-placeholder span{font-size:36px}.detail-top{display:flex;justify-content:space-between}.problem-detail h2{font-size:20px}.detail-body{font-size:13px;line-height:1.85}.detail-info{display:flex;gap:7px;margin:13px 0}.detail-info span{padding:5px 8px;border-radius:7px;background:#f0f4f1;font-size:9px}.scratch-pad{display:grid;gap:6px}.scratch-pad span{font-size:9px;color:var(--muted)}.scratch-pad textarea{min-height:88px;padding:10px;border:1px dashed #c7d5ce;border-radius:10px}.reveal-button{width:100%;margin-top:11px;padding:11px;border:0;border-radius:10px;background:#265f51;color:#fff;font-weight:900}.detail-solution{margin-top:12px;padding:14px;border-radius:12px;background:#edf6f1}.detail-solution small,.detail-solution strong{display:block;margin-top:6px}.detail-solution p{font-size:11px;line-height:1.75}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:7px}.result-actions button{padding:9px;border:1px solid #e2b485;border-radius:8px;background:#fff7ee;font-size:9px}.result-actions button.solved{border-color:#7fbea1;background:#e2f3ea}.source-note{color:#9aa7a2;font-size:8px}.compact-builder{position:static;margin-top:14px}#printQuestionCards{display:none}
@media(max-width:900px){.practice-hero{display:block}.practice-rings{margin-top:18px}.practice-workspace{grid-template-columns:1fr}.problem-detail{position:static}.practice-paths{grid-template-columns:1fr}.practice-filters{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.practice-hero{padding:22px}.practice-rings{min-width:0}.practice-workspace{display:block}.problem-table-head{display:none}.problem-row{grid-template-columns:36px 1fr 62px 54px}.problem-row .attempt-count{display:none}.problem-detail{margin-top:12px}.practice-filters{grid-template-columns:1fr}}
@media print{.print-mode .practice-hero,.print-mode .practice-paths,.print-mode .practice-workspace{display:none!important}.print-mode #printQuestionCards{display:block!important}}