.study-shell{max-width:820px;margin:auto}.study-toolbar{display:flex;gap:10px;align-items:end;flex-wrap:wrap;margin:18px 0}.study-toolbar label{display:grid;gap:4px;color:var(--mut);font-size:13px}.study-toolbar select,.study-toolbar button,.study-toolbar .button-label{padding:9px 12px;border:1px solid var(--bd);border-radius:8px;background:#fff;color:var(--ink);font:inherit;cursor:pointer}.study-toolbar .check-label{display:flex;align-items:center;gap:6px;padding:8px 0}.study-stats{display:flex;gap:22px;padding:12px 0;color:var(--mut);flex-wrap:wrap}.study-progress{display:grid;grid-template-columns:1fr auto;gap:5px 12px;align-items:center;margin:8px 0 14px}.study-progress progress{width:100%;height:12px}.study-progress small{color:var(--mut)}.study-card{min-height:280px;border:1px solid var(--bd);border-radius:14px;padding:30px;margin:8px 0 16px;background:#fff;display:flex;flex-direction:column;justify-content:center;text-align:center}.study-card h2{font-size:30px;border:0;margin:.4em 0;color:var(--ink)}.study-card h3{font-size:14px;text-transform:uppercase;letter-spacing:.05em;color:var(--acc);margin:18px 0 4px}.study-label{color:var(--mut);font-size:13px;text-transform:uppercase;letter-spacing:.08em}.study-card-actions{display:flex;justify-content:center;gap:8px;margin-top:10px}.study-card-actions button{border:1px solid var(--bd);background:#fff;border-radius:7px;padding:6px 10px;cursor:pointer}.study-card-actions button[aria-pressed="true"]{background:#fff4cc;border-color:#d7a900}.study-reveal{display:block;width:100%;padding:13px;background:var(--acc);color:#fff;border:0;border-radius:9px;font-size:16px;cursor:pointer}.study-ratings{display:none;grid-template-columns:repeat(4,1fr);gap:8px}.study-ratings.visible{display:grid}.study-ratings button{padding:12px 5px;border:1px solid var(--bd);border-radius:9px;background:#fff;cursor:pointer;color:var(--ink)}.study-ratings button:hover,.study-ratings button:focus-visible{border-color:var(--acc);color:var(--acc)}.study-ratings small,.study-reveal small{display:block;opacity:.65;margin-top:2px}.study-empty{text-align:center;color:var(--mut)}.study-forecast{font-size:12px;color:var(--mut);margin:8px 0}.study-help{width:min(760px,calc(100% - 30px));max-height:85vh;border:0;border-radius:14px;padding:0;box-shadow:0 18px 60px rgba(20,30,60,.28)}.study-help::backdrop{background:rgba(14,30,42,.62)}.study-help-head{position:sticky;top:0;display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:linear-gradient(120deg,#0e3d52,#0e6e8e);color:#fff;z-index:1}.study-help-head button{border:1px solid rgba(255,255,255,.45);background:transparent;color:#fff;border-radius:7px;padding:6px 10px;cursor:pointer}.study-help-body{padding:12px 28px 28px}.study-settings-grid{display:grid;gap:14px}.study-settings-grid label{display:grid;gap:5px}.study-settings-grid input[type="number"]{padding:9px;border:1px solid var(--bd);border-radius:8px}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}@media(max-width:600px){.study-ratings{grid-template-columns:repeat(2,1fr)}.study-card{padding:22px;min-height:240px}.study-help-body{padding:8px 18px 22px}.study-progress{grid-template-columns:1fr}}