.app-shell{background:var(--semi-color-bg-1);min-height:100vh}.app-header{z-index:50;border-bottom:1px solid var(--semi-color-border);background:#fff;position:sticky;top:0}.app-header-inner{align-items:center;gap:24px;max-width:1080px;height:60px;margin:0 auto;padding:0 20px;display:flex}.app-logo{color:var(--semi-color-text-0);align-items:center;gap:8px;font-size:16px;font-weight:700;text-decoration:none;display:flex}.app-logo .mark{background:linear-gradient(135deg, var(--semi-color-primary), #6a3ac7);color:#fff;border-radius:6px;place-items:center;width:30px;height:30px;font-size:15px;display:grid}.app-nav{flex:1;gap:2px;display:flex}.app-nav a{color:var(--semi-color-text-1);border-radius:6px;padding:8px 14px;font-size:14px;font-weight:500;text-decoration:none;transition:all .15s}.app-nav a:hover{color:var(--semi-color-primary)}.app-nav a.active{background:var(--semi-color-primary-light-default);color:var(--semi-color-primary);font-weight:600}.app-header .right{align-items:center;gap:14px;display:flex}.app-bell{cursor:pointer;width:32px;height:32px;color:var(--semi-color-text-2);border-radius:6px;place-items:center;display:grid;position:relative}.app-bell:hover{background:var(--semi-color-bg-1)}.app-bell .dot{background:var(--semi-color-danger);border-radius:50%;width:7px;height:7px;position:absolute;top:5px;right:6px}.app-avatar{color:#fff;cursor:pointer;border-radius:50%;place-items:center;width:34px;height:34px;font-size:14px;font-weight:600;display:grid}.app-main{max-width:1080px;margin:0 auto;padding:24px 20px 48px}.app-hero{color:#fff;background:linear-gradient(120deg,#0064fa,#0095ee 60%,#6a3ac7);border-radius:9px;margin-bottom:22px;padding:26px 28px;position:relative;overflow:hidden}.app-hero h2{margin-bottom:6px;font-size:20px}.app-hero>p{opacity:.9;font-size:13px}.app-hero .pick{cursor:pointer;color:#fff;background:#ffffff24;border:1px solid #ffffff47;border-radius:9px;align-items:center;gap:12px;margin-top:16px;padding:12px 16px;text-decoration:none;transition:background .15s;display:flex}.app-hero .pick:hover{background:#ffffff38}.app-hero .pick .ic{background:#ffffff38;border-radius:6px;flex-shrink:0;place-items:center;width:38px;height:38px;font-size:18px;display:grid}.app-hero .pick .info{flex:1}.app-hero .pick .t{font-size:14px;font-weight:600}.app-hero .pick .d{opacity:.88;margin-top:2px;font-size:12px}.app-hero .pick .go{white-space:nowrap;font-size:13px;font-weight:600}.app-hero .stat{gap:30px;margin-top:18px;display:flex}.app-hero .stat b{font-size:22px;display:block}.app-hero .stat span{opacity:.85;font-size:12px}.app-card{border:1px solid var(--semi-color-border);background:#fff;border-radius:9px;padding:18px}.app-section-title{color:var(--semi-color-text-0);margin-bottom:12px;font-size:15px;font-weight:700}.app-grid-4{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}.func-card{border:1px solid var(--semi-color-border);cursor:pointer;color:inherit;background:#fff;border-radius:9px;padding:18px;text-decoration:none;transition:all .15s;display:block}.func-card:hover{border-color:var(--semi-color-primary);box-shadow:0 8px 20px #0064fa1a}.func-card .ic{border-radius:6px;place-items:center;width:42px;height:42px;margin-bottom:12px;font-size:20px;display:grid}.func-card h4{color:var(--semi-color-text-0);margin-bottom:4px;font-size:15px}.func-card p{color:var(--semi-color-text-2);font-size:12px}.app-item{border:1px solid var(--semi-color-border);background:#fff;border-radius:6px;align-items:center;gap:14px;margin-bottom:14px;padding:16px;display:flex}.app-item .p-ic{background:var(--semi-color-primary-light-default);width:46px;height:46px;color:var(--semi-color-primary);border-radius:6px;flex-shrink:0;place-items:center;font-size:20px;display:grid}.app-item .info{flex:1;min-width:0}.app-item .info h4{color:var(--semi-color-text-0);font-size:15px}.app-item .info .meta{color:var(--semi-color-text-2);flex-wrap:wrap;gap:14px;margin-top:4px;font-size:12px;display:flex}.rank-row{border-bottom:1px solid var(--semi-color-bg-1);align-items:center;gap:12px;padding:10px 4px;display:flex}.rank-row:last-child{border-bottom:none}.rank-num{text-align:center;width:26px;color:var(--semi-color-text-2);font-variant-numeric:tabular-nums;font-weight:700}.rank-num.top{color:var(--semi-color-warning)}.rank-avatar{color:#fff;border-radius:50%;flex-shrink:0;place-items:center;width:32px;height:32px;font-size:13px;font-weight:600;display:grid}.c-blue{color:#0064fa}.c-green{color:#3bb346}.c-orange{color:#fc8800}.c-red{color:#f93920}.c-purple{color:#8b5cf6}.lib-row{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:4px;display:flex}.lib-label{color:var(--semi-color-text-2);flex-shrink:0;font-size:13px}.lib-chip{border:1px solid var(--semi-color-border);color:var(--semi-color-text-1);cursor:pointer;background:#fff;border-radius:6px;padding:6px 14px;font-size:13px;transition:all .15s}.lib-chip:hover{border-color:var(--semi-color-primary);color:var(--semi-color-primary)}.lib-chip.active{border-color:var(--semi-color-primary);color:var(--semi-color-primary);background:var(--semi-color-primary-light-default);font-weight:600}.lib-tabs{border-bottom:2px solid var(--semi-color-border);margin:20px 0 16px;display:flex}.lib-tabs .tab{cursor:pointer;color:var(--semi-color-text-2);border-bottom:2px solid #0000;margin-bottom:-2px;padding:10px 22px;font-size:14px;font-weight:500}.lib-tabs .tab.active{color:var(--semi-color-primary);border-bottom-color:var(--semi-color-primary);font-weight:600}.lib-grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.lib-card{border:1px solid var(--semi-color-border);color:inherit;background:#fff;border-radius:9px;padding:18px;text-decoration:none;transition:all .15s;display:block}.lib-card:hover{border-color:var(--semi-color-primary);box-shadow:0 4px 14px #0064fa14}.lib-card .t{color:var(--semi-color-text-0);font-size:15px;font-weight:700}.lib-card .d{color:var(--semi-color-text-2);margin-top:4px;font-size:12px}.lib-card .chips{flex-wrap:wrap;gap:6px;margin-top:12px;display:flex}.lib-card .chip{background:var(--semi-color-primary-light-default);color:var(--semi-color-primary);border-radius:4px;padding:3px 8px;font-size:11px}.lib-card .b{color:var(--semi-color-text-2);border-top:1px solid var(--semi-color-border);justify-content:space-between;margin-top:14px;padding-top:12px;font-size:12px;display:flex}.lib-card .b .go{color:var(--semi-color-primary);font-weight:600}.answer-tag{background:var(--semi-color-primary-light-default);color:var(--semi-color-primary);border-radius:4px;padding:2px 8px;font-size:12px}.option-row{border:1px solid var(--semi-color-border);cursor:pointer;background:#fff;border-radius:6px;align-items:center;gap:10px;margin-bottom:10px;padding:12px 14px;transition:all .15s;display:flex}.option-row:hover{border-color:var(--semi-color-primary)}.option-row.selected{border-color:var(--semi-color-primary);background:var(--semi-color-primary-light-default)}.option-row.correct{border-color:var(--semi-color-success);background:#ecf7ec}.option-row.wrong{border-color:var(--semi-color-danger);background:#fef0ee}.opt-key{border:1px solid var(--semi-color-border);border-radius:50%;flex-shrink:0;place-items:center;width:24px;height:24px;font-size:13px;display:grid}.option-row.selected .opt-key{border-color:var(--semi-color-primary);color:var(--semi-color-primary);background:#fff}@media (max-width:760px){.app-grid-4{grid-template-columns:repeat(2,1fr)}.app-nav{display:none}.lib-grid{grid-template-columns:1fr}}