.practice-hero{padding:52px 0 26px;max-width:850px}.practice-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.14;margin:12px 0}.practice-hero p{line-height:1.7;color:var(--dg-body)}.practice-eyebrow{color:var(--dg-primary);font-weight:700;font-size:13px;letter-spacing:.06em}.practice-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;margin:28px 0 48px}.practice-main,.practice-sidebar{min-width:0}.practice-main h2{font-size:25px;line-height:1.35}.question-card{padding:24px;margin:20px 0}.question-card h3{font-size:18px;line-height:1.6;margin:0 0 14px}.question-card p{line-height:1.7}.question-card :is(pre,table){max-width:100%;overflow:auto}.question-card img{max-width:100%}.question-card{overflow-wrap:anywhere}.iq-q-num,.question-number{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:30px;background:var(--dg-soft-purple);color:var(--dg-primary);border-radius:9px;margin-right:8px}.iq-badge,.iq-stat-chip,.iq-tag{display:inline-block;padding:5px 10px;background:var(--dg-surface-soft);border-radius:6px;font-size:12px;margin:0 5px 8px 0}.question-card h3 .iq-badge{margin:0 0 0 8px;vertical-align:middle;line-height:1.4;font-weight:600;text-transform:capitalize;white-space:nowrap}.iq-badge-easy{background:#e7f3ec;color:#236343}.iq-badge-medium{background:#fff1d8;color:#80520d}.iq-badge-hard{background:#fbe9ec;color:#a02c40}.iq-eval-group,.iq-filter-bar,.iq-stats-strip{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:18px 0}.user-answer{box-sizing:border-box;width:100%;margin:8px 0 14px}.answer-section,.explanation{margin-top:20px;border-top:1px solid var(--dg-border);padding-top:18px;line-height:1.7}.iq-tips-box{background:var(--dg-surface-soft);padding:14px;border-radius:9px;margin:14px 0}.practice-page button[aria-pressed=true]{background:var(--dg-primary);color:var(--dg-card)}.quiz-option{display:flex;align-items:baseline;gap:12px;border:1px solid var(--dg-border);border-radius:9px;margin:10px 0;padding:0 14px}.quiz-option label{flex:1;padding:14px 0;cursor:pointer}.quiz-option.correct,.quiz-option:has(input:checked){background:var(--dg-soft-purple);border-color:var(--dg-primary)}.quiz-option.wrong{border-color:var(--dg-danger)}.quiz-option .icon{margin-left:10px}.practice-sidebar nav{padding:22px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.practice-sidebar nav:focus-within,.practice-sidebar nav:hover{transform:translateY(-3px);box-shadow:var(--dg-shadow-raised);border-color:var(--dg-field-hover)}.practice-sidebar a:focus-visible,.practice-sidebar a:hover{color:var(--dg-primary)}@media(prefers-reduced-motion:reduce){.practice-sidebar nav{transition:none}.practice-sidebar nav:focus-within,.practice-sidebar nav:hover{transform:none}}.practice-sidebar h2{font-size:20px}.pagination,.practice-sidebar ul{list-style:none;padding:0}.practice-sidebar a{display:flex;justify-content:space-between;gap:10px;padding:14px 0;border-top:1px solid var(--dg-border);color:var(--dg-text);overflow-wrap:anywhere}.pagination-bar{display:flex;justify-content:space-between}.pagination{display:flex;gap:8px;flex-wrap:wrap}.pagination .disabled a{pointer-events:none;opacity:.5}.pagination .active a{background:var(--dg-soft-purple);color:var(--dg-primary)}#resultBar{background:var(--dg-card);border:1px solid var(--dg-border);border-radius:12px;padding:16px;margin:24px 0;box-shadow:var(--dg-shadow-raised)}#resultBar>div:last-child{display:flex;justify-content:space-between;gap:12px;align-items:center}.iq-progress-wrap{height:5px;background:var(--dg-surface-soft);margin-bottom:12px;border-radius:4px}.iq-progress-fill{height:100%;background:var(--dg-primary);width:0}#resultModal{color:var(--dg-text);width:min(420px,calc(100% - 64px));padding:28px}#resultModal::backdrop{background:rgb(37 33 44 / .55)}.iq-score-circle{display:flex;gap:12px;font-size:36px;color:var(--dg-primary)}#resultBreakdown{margin:20px 0}#toastContainer{color:var(--dg-primary);padding:14px 0}.practice-top{margin-bottom:30px}.practice-empty{padding:24px}.practice-announcement{padding:12px}.practice-announcement button{margin-left:12px}#disqus_thread{margin-top:36px;min-height:90px}.practice-page [hidden]{display:none!important}@media(max-width:900px){.practice-grid{grid-template-columns:minmax(0,1fr)}.practice-hero{padding-top:32px}.question-card{padding:18px}.practice-grid{gap:20px}}