.premium-setup{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:25px}.mode-card{border:1px solid #27474c;background:rgba(8,36,40,.7);color:#9eb7ba;padding:12px;text-align:left;cursor:pointer;transition:.2s}.mode-card:hover,.mode-card.active{border-color:#69d5c1;background:rgba(105,213,193,.1);color:#e8faf5}.mode-card b,.mode-card small{display:block}.mode-card b{font-size:12px}.mode-card small{font-size:8px;margin-top:4px;color:#668b8d}.mode-card.active small{color:#91c8be}.category-picker{display:flex;align-items:center;justify-content:space-between;margin-top:8px;border:1px solid #27474c;padding:9px 12px;color:#77979a;font:8px monospace;letter-spacing:.12em}.category-picker select{max-width:190px;border:0;background:#0c292d;color:#d8eeea;padding:6px 8px;font:10px "Noto Sans JP"}.premium-player{display:flex;align-items:center;gap:11px;margin-left:auto;margin-right:14px}.level-orb{width:36px;height:36px;display:grid;place-items:center;border-radius:50%;border:2px solid var(--mint);font:800 10px monospace;color:var(--teal);background:#fff}.xp-copy{font-size:8px;color:var(--muted);min-width:105px}.xp-copy b{display:block;font-size: Inherit;color:var(--ink);margin-bottom:4px}.xp-track{width:105px;height:3px;background:#dbe4e1}.xp-track i{display:block;height:100%;background:var(--teal);transition:width .5s}.bookmark-btn{border:1px solid var(--line);lsolid);background:#fff;color:var(--muted);padding:6px 10px;font-size:15px;cursor:pointer}.bookmark-btn.saved{background:#fff1ca;border-color:#e0b853;color:#b87c00}.mastery-tag{font-size:8px;padding:5px 8px;border:1px solid #b9d9d2;color:var(--teal);letter-spacing:.08em}.premium-toast{position:fixed;z-index:50;right:24px;bottom:24px;max-width:320px;padding:15px 18px;background:#102a30;color:#fff;box-shadow:0 15px 45px rgba(0,0,0,.25);border-left:3px solid var(--mint);animation:toastIn .3s ease}.premium-toast b,.premium-toast span{display:block}.premium-toast b{font-size:11px;color:var(--mint)}.premium-toast span{font-size:10px;margin-top:4px;color:#bdd0d0}.analytics{margin:18px 0;text-align:left}.analytics h3{font-size:11px;letter-spacing:.08em}.analytic-row{display:grid;grid-template-columns:105px 1fr 30px;gap:8px;align-items:center;margin:8px 0;font-size:9px}.analytic-bar{height:6px;background:#e3ebe8}.analytic-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--mint))}.title-metrics{display:flex;gap:8px;margin-top:16px}.title-metric{min-width:95px;border-left:1px solid #315056;padding:5px 10px}.title-metric span,.title-metric b{display:block}.title-metric span{font:7px monospace;color:#64878a;letter-spacing:.1em}.title-metric b{font:700 14px monospace;color:#c9e6e0;margin-top:4px}.install-btn{position:absolute;z-index:4;right:72px;bottom:22px;border:1px solid #315056;background:transparent;color:#8eadaf;padding:8px 12px;font:8px monospace;cursor:pointer}.install-btn:hover{border-color:#69d5c1;color:#69d5c1}.daily-badge{color:#e2b75c!important;border-color:#705f36!important}.question-panel.mastered:before{content:"MASTERED";position:absolute;right:0;top:74px;padding:4px 9px;background:#0c817d;color:#fff;font:7px monospace;letter-spacing:.12em;z-index:2}@keyframes toastIn{from{opacity:0;transform:translateY(12px)}}
@media(max-width:900px){.premium-player{display:none}.premium-setup{grid-template-columns:1fr}.mode-card{padding:9px}.category-picker{align-items:flex-start;gap:8px;flex-direction:column}.category-picker select{max-width:none;width:100%}.install-btn{right:24px}.title-metrics{flex-wrap:wrap}}
.premium-setup:has(.challenge-card){grid-template-columns:repeat(4,1fr)}.challenge-card{border-color:#586d72}.daily-card{border-color:#826d35}.daily-card.active{border-color:#ffd36f;background:rgba(255,211,111,.1);color:#ffe7aa}
@media(max-width:900px){.premium-setup:has(.challenge-card){grid-template-columns:1fr 1fr}.premium-setup .mode-card:nth-child(2){grid-column:auto}.premium-setup .daily-card{grid-column:1/-1}}