.ad-slot{margin:18px 0 22px;border:1px solid #d6dacd;border-radius:18px;background:#fffdf7;padding:8px;box-shadow:0 10px 28px rgba(23,35,29,.06)}
.ad-label{display:block;padding:2px 7px 7px;color:#566258;font:700 12px/1.2 Arial,sans-serif;letter-spacing:.08em}
.manual-ad-space{margin:32px 0;padding:12px 0;border-top:1px solid #d6dacd;border-bottom:1px solid #d6dacd;clear:both;text-align:center}
.manual-ad-space[hidden]{display:none!important}
.flashcard.review-error .face{border:3px solid #b63b32!important;box-shadow:0 0 0 4px #b63b3220}.flashcard.review-hard .face{border:3px solid #a56416!important;box-shadow:0 0 0 4px #a5641620}
#cardDifficultyMark{font-weight:700;color:#943d28}#reinforcementRound{font-weight:700;color:#366b50}#reinforceBtn[hidden]{display:none}
.card-navigation{display:flex;gap:10px;margin:12px 0 20px}.card-navigation button{flex:1;min-height:44px}.card-navigation button[hidden]{display:none}.card-navigation button:disabled{opacity:.45;cursor:default}
.subject-folder>summary{cursor:pointer;min-height:64px;position:relative;padding-left:48px!important}
.subject-folder>summary::before{content:'📁';position:absolute;left:14px;top:20px;font-size:22px}
.subject-folder[open]>summary::before{content:'📂'}
.subject-folder>summary:focus-visible{outline:3px solid #366b50;outline-offset:3px}
.manual-ad-space [data-adsense-content]{min-height:100px;width:100%}
.ad-card{min-height:104px;display:grid;grid-template-columns:132px 1fr;gap:15px;align-items:center;border-radius:13px;overflow:hidden;background:#17231d;color:#fff;text-decoration:none}
.ad-card img{width:132px;height:104px;object-fit:cover;background:#e8efda}
.ad-copy{display:flex;flex-direction:column;gap:5px;padding:14px 16px 14px 0}
.ad-copy small{color:#d9f159;font:800 10px/1.2 Arial,sans-serif;letter-spacing:.1em}
.ad-copy strong{font:700 18px/1.15 Georgia,serif;color:#fff}
.ad-copy b{font:700 12px/1.2 Arial,sans-serif;color:#d9f159}
.ad-slot-compact .ad-card{min-height:88px;grid-template-columns:96px 1fr}
.ad-slot-compact .ad-card img{width:96px;height:88px;object-fit:contain;padding:12px}
.study-ad-slot{margin-top:0;margin-bottom:18px}
.study-ad-slot .ad-card{min-height:78px}
.study-ad-slot .ad-card img{height:78px}
.profile-links #adminPanelLink{display:block;flex-basis:100%;margin:12px 0;padding:16px;border-radius:12px;background:#d9f159;font-size:16px;text-align:center;font-weight:800;color:#17231d;text-decoration:none}
@media(max-width:540px){.ad-card{grid-template-columns:92px 1fr;min-height:92px}.ad-card img{width:92px;height:92px}.ad-copy{padding:11px 12px 11px 0}.ad-copy strong{font-size:15px}.ad-slot-compact .ad-card{grid-template-columns:82px 1fr}.ad-slot-compact .ad-card img{width:82px;height:82px}}