.study-plan { scroll-margin-top:90px; }
.study-plan h2 { font-family:var(--font-display); color:var(--bw-ink); margin:12px 0 8px; }
.study-plan > p { color:var(--bw-muted); line-height:1.7; }
.study-plan-months { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; margin:20px 0; }
.study-plan-month { background:var(--bw-paper); border:1px solid var(--bw-line); border-radius:16px; overflow:hidden; min-width:0; }
.study-plan-month summary { display:flex; align-items:center; gap:12px; padding:16px; cursor:pointer; color:var(--bw-ink); font-weight:600; list-style:none; }
.study-plan-month summary::after { content:'+'; color:var(--bw-brand); margin-left:auto; font-size:22px; flex-shrink:0; }
.study-plan-month[open] summary::after { content:'−'; }
.study-plan-number { background:var(--bw-tint); color:var(--bw-brand-text); border-radius:var(--bw-radius-sm); padding:6px 10px; min-width:48px; text-align:center; flex-shrink:0; }
.study-plan-month > div { padding:0 16px 18px; }
.study-plan-month h3 { font-size:16px; line-height:1.5; color:var(--bw-ink); margin-bottom:8px; }
.study-plan-month p { color:var(--bw-muted); line-height:1.7; }
.study-plan-link { color:var(--bw-brand-text); text-decoration:none; font-weight:600; }
.study-plan summary:focus-visible, .study-plan-link:focus-visible { outline:2px solid var(--bw-brand); outline-offset:3px; }
@media(max-width:700px) { .study-plan-months { grid-template-columns:1fr; } }