.quiz-hub-screen{max-width:1100px;margin:0 auto;padding-bottom:36px}
.quiz-hub-panel{margin:20px auto;max-width:980px}
.quiz-hub-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.quiz-hub-main-card{min-height:190px;padding:24px;border:1px solid rgba(255,255,255,.14);border-radius:24px;background:linear-gradient(145deg,rgba(255,255,255,.095),rgba(255,255,255,.035));color:inherit;text-align:left;cursor:pointer;box-shadow:0 18px 42px rgba(0,0,0,.18);transition:transform .18s ease,border-color .18s ease,background .18s ease}
.quiz-hub-main-card:hover,.quiz-hub-main-card:focus-visible{transform:translateY(-2px);border-color:rgba(129,170,255,.55);background:linear-gradient(145deg,rgba(129,170,255,.16),rgba(255,255,255,.04))}
.quiz-hub-main-card.comprehensive{background:linear-gradient(145deg,rgba(194,151,255,.16),rgba(255,255,255,.04))}
.quiz-hub-card-label{display:block;font-size:.74rem;letter-spacing:.15em;color:var(--muted,#aeb7c7);margin-bottom:18px}
.quiz-hub-main-card strong{display:block;font-size:clamp(1.35rem,3vw,1.85rem);margin-bottom:12px}
.quiz-hub-main-card small{display:block;font-size:.93rem;line-height:1.7;color:var(--muted,#bac3d1)}
.quiz-hub-note,.comprehensive-resume-note,.quiz-preparation-card{margin-top:18px;padding:18px 20px;border:1px solid rgba(255,255,255,.12);border-radius:18px;background:rgba(255,255,255,.045)}
.quiz-hub-note b,.comprehensive-resume-note b{display:block;margin-bottom:7px}.quiz-hub-note p,.comprehensive-resume-note p,.quiz-preparation-card p{margin:0;line-height:1.75;color:var(--muted,#bac3d1)}
.quiz-hub-subhead{display:flex;align-items:center;gap:16px;margin-bottom:18px}.quiz-hub-subhead h2{margin:2px 0 0}.quiz-hub-subhead .eyebrow{margin:0}
.quiz-back-button{border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:inherit;border-radius:999px;padding:10px 15px;cursor:pointer;white-space:nowrap}
.quiz-topic-search{display:block;margin:0 0 14px}.quiz-topic-search span{display:block;margin-bottom:7px;font-size:.83rem;color:var(--muted,#bac3d1)}.quiz-topic-search input{width:100%;box-sizing:border-box;border:1px solid rgba(255,255,255,.14);border-radius:15px;padding:13px 15px;background:rgba(0,0,0,.2);color:inherit;font:inherit}
.quiz-topic-categories{display:flex;gap:8px;overflow-x:auto;padding:2px 0 9px;scrollbar-width:thin}.quiz-topic-category{flex:0 0 auto;border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.045);color:inherit;border-radius:999px;padding:8px 13px;cursor:pointer}.quiz-topic-category.active{background:rgba(111,151,255,.2);border-color:rgba(111,151,255,.55)}
.quiz-topic-count{margin:4px 0 12px;color:var(--muted,#bac3d1);font-size:.88rem}.quiz-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.quiz-topic-card{position:relative;min-height:145px;padding:17px;border:1px solid rgba(255,255,255,.12);border-radius:18px;background:rgba(255,255,255,.045);color:inherit;text-align:left;cursor:pointer}.quiz-topic-card:hover,.quiz-topic-card:focus-visible{border-color:rgba(111,151,255,.55);background:rgba(111,151,255,.095)}.quiz-topic-card span{display:block;font-size:.75rem;letter-spacing:.08em;color:var(--muted,#bac3d1);margin-bottom:10px}.quiz-topic-card b{display:block;font-size:1.05rem;margin-bottom:8px}.quiz-topic-card small{display:block;line-height:1.55;color:var(--muted,#bac3d1)}.quiz-topic-empty{text-align:center;color:var(--muted,#bac3d1);padding:24px}
.quiz-topic-summary{margin:0 0 18px;line-height:1.75;color:var(--muted,#bac3d1)}.quiz-level-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.quiz-level-card{min-height:156px;padding:20px 16px;border:1px solid rgba(255,255,255,.13);border-radius:20px;background:rgba(255,255,255,.045);color:inherit;text-align:center;cursor:pointer}.quiz-level-card:hover,.quiz-level-card:focus-visible{transform:translateY(-2px);border-color:rgba(111,151,255,.55)}.quiz-level-card span{display:block;font-weight:700;margin-bottom:10px}.quiz-level-card b{display:block;font-size:1.55rem;margin-bottom:10px}.quiz-level-card small{display:block;line-height:1.55;color:var(--muted,#bac3d1)}.quiz-level-card.master{border-color:rgba(216,174,255,.38);background:linear-gradient(145deg,rgba(171,108,255,.17),rgba(255,255,255,.035))}.comprehensive-levels{grid-template-columns:repeat(4,minmax(0,1fr))}.quiz-preparation-card h3{margin:4px 0 9px}.quiz-preparation-card .eyebrow{margin:0}
@media(max-width:820px){.quiz-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.comprehensive-levels{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.quiz-hub-actions,.quiz-topic-grid,.quiz-level-grid,.comprehensive-levels{grid-template-columns:1fr}.quiz-hub-main-card{min-height:155px;padding:20px}.quiz-hub-subhead{align-items:flex-start}.quiz-level-card{min-height:132px}.quiz-hub-screen{padding-inline:0}.quiz-hub-panel{width:100%}}