/* BAIO Study Hub */
.sh { --ivory:#fbf7ee; --sheet:#fffdf8; --navy:#14213d; --rust:#9a3412; --rule:#e2d6bd; background:var(--ivory); color:var(--navy); font-family:"Noto Sans Bengali","Manrope",sans-serif; line-height:1.75; padding-bottom:48px; }
.sh *, .sh *::before, .sh *::after { box-sizing:border-box; }
.sh h1, .sh h2, .sh h3 { font-family:"Noto Serif Bengali",serif; color:var(--navy); line-height:1.35; margin:0; }
.sh a { color:var(--rust); }
.sh-wrap { max-width:780px; margin:0 auto; padding:0 20px; }
.sh-wrap-wide { max-width:1120px; margin:0 auto; padding:0 20px; }
.sh-eyebrow { color:var(--rust); font-weight:700; font-size:.82rem; letter-spacing:.05em; margin:0 0 8px; }
.sh-lead { max-width:44em; margin:12px 0 0; opacity:.88; font-size:1.05rem; }
.sh-btn { display:inline-block; background:var(--rust); color:#fff !important; padding:9px 18px; border-radius:4px; font-weight:700; text-decoration:none !important; border:2px solid var(--rust); }
.sh-btn-line { background:transparent; color:var(--navy) !important; border-color:var(--navy); }
.sh-more { font-weight:700; text-decoration:none; }

/* Hero / hub */
.sh-hero { padding:40px 0 30px; border-bottom:1px solid var(--rule); background:var(--sheet); }
.sh-hero h1 { font-size:clamp(1.6rem,4.4vw,2.6rem); }
.sh-crumbs { font-size:.9rem; margin-bottom:12px; opacity:.85; }
.sh-crumbs a { text-decoration:none; }
.sh-exams { display:grid; grid-template-columns:repeat(auto-fill,minmax(180px,1fr)); gap:14px; margin-top:26px; }
.sh-exam { display:block; padding:14px 16px; background:var(--ivory); border:1px solid var(--rule); box-shadow:4px 4px 0 var(--rule); text-decoration:none !important; color:var(--navy) !important; }
.sh-exam strong { display:block; font-family:"Noto Serif Bengali",serif; }
.sh-exam span { font-size:.85rem; color:var(--rust); }
.sh-list { padding:28px 0; }
.sh-chips { display:flex; gap:8px; overflow-x:auto; padding:4px 0 10px; margin:18px 0 6px; scrollbar-width:thin; }
.sh-list .sh-chips { margin-top:0; }
.sh-chip { flex:none; padding:6px 14px; border:1px solid var(--rule); border-radius:999px; background:var(--sheet); color:var(--navy) !important; text-decoration:none !important; font-size:.92rem; white-space:nowrap; }
.sh-chip.is-on { background:var(--navy); color:#fff !important; border-color:var(--navy); }

/* Cards */
.sh-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; margin-top:18px; }
.sh-grid-2 { grid-template-columns:repeat(2,minmax(0,1fr)); }
.sh-card { background:var(--sheet); border:1px solid var(--rule); box-shadow:6px 6px 0 var(--rule); display:flex; flex-direction:column; }
.sh-card-img { position:relative; display:block; aspect-ratio:16/9; overflow:hidden; background:var(--navy); }
.sh-card-img img { width:100%; height:100%; object-fit:cover; display:block; }
.sh-play { position:absolute; left:10px; bottom:10px; background:var(--rust); color:#fff; font-size:.78rem; font-weight:700; padding:2px 10px; border-radius:3px; }
.sh-card-body { padding:14px 16px 16px; }
.sh-card-tags { font-size:.8rem; color:var(--rust); font-weight:700; margin:0 0 6px; }
.sh-card h3 { font-size:1.05rem; }
.sh-card h3 a { color:var(--navy); text-decoration:none; }
.sh-card-date { font-size:.82rem; opacity:.7; margin:8px 0 0; }
.sh-pages { margin-top:28px; display:flex; gap:8px; flex-wrap:wrap; }
.sh-pages .page-numbers { padding:6px 12px; border:1px solid var(--rule); background:var(--sheet); text-decoration:none; color:var(--navy); }
.sh-pages .current { background:var(--navy); color:#fff; }
.sh-empty { padding:28px; border:1px dashed var(--rule); background:var(--sheet); margin-top:18px; }
.sh-empty h2 { font-size:1.2rem; margin-bottom:6px; }

/* Article */
.sh-article { padding-top:32px; }
.sh-article h1 { font-size:clamp(1.55rem,4.2vw,2.3rem); }
.sh-meta { display:flex; flex-wrap:wrap; gap:6px 18px; font-size:.9rem; opacity:.85; margin:12px 0 22px; padding-bottom:14px; border-bottom:1px solid var(--rule); }
.sh-video { position:relative; aspect-ratio:16/9; background:var(--navy); border:1px solid var(--rule); box-shadow:6px 6px 0 var(--rule); overflow:hidden; }
.sh-video iframe { position:absolute; inset:0; width:100%; height:100%; border:0; }
.sh-video-link { font-size:.9rem; margin:10px 0 0; }
.sh-cover img { width:100%; height:auto; display:block; border:1px solid var(--rule); }
.sh-content { margin-top:24px; font-size:1.06rem; }
.sh-content h2 { font-size:1.45rem; margin:34px 0 12px; padding-bottom:6px; border-bottom:2px solid var(--rule); }
.sh-content h3 { font-size:1.2rem; margin:26px 0 10px; }
.sh-content p, .sh-content ul, .sh-content ol { margin:0 0 16px; }
.sh-content img { max-width:100%; height:auto; }
.sh-content table { width:100%; border-collapse:collapse; margin:0 0 18px; font-size:.95rem; display:block; overflow-x:auto; }
.sh-content th, .sh-content td { border:1px solid var(--rule); padding:8px 10px; text-align:left; vertical-align:top; }
.sh-content th { background:var(--sheet); }
.sh-content blockquote { margin:0 0 16px; padding:12px 16px; border-left:4px solid var(--rust); background:var(--sheet); }
.sh-block { margin-top:36px; }
.sh-block h2 { font-size:1.35rem; margin-bottom:14px; }
.sh-faq { border:1px solid var(--rule); background:var(--sheet); padding:12px 16px; margin-bottom:10px; }
.sh-faq summary { font-weight:700; cursor:pointer; }
.sh-faq p { margin:8px 0 0; }
.sh-refs ul { margin:0; padding-left:20px; }
.sh-teacher { display:flex; gap:16px; align-items:center; margin-top:36px; padding:18px; background:var(--sheet); border:1px solid var(--rule); }
.sh-teacher img { width:76px; height:76px; border-radius:50%; object-fit:cover; flex:none; border:3px solid var(--rule); }
.sh-teacher h2 { font-size:1.1rem; }
.sh-teacher p { margin:4px 0 0; font-size:.92rem; opacity:.85; }
.sh-teacher .sh-eyebrow { margin:0 0 2px; }
.sh-course-box { padding:20px; background:var(--sheet); border:1px solid var(--rule); box-shadow:6px 6px 0 var(--rule); }
.sh-courses { list-style:none; margin:0 0 16px; padding:0; }
.sh-courses li { border-top:1px dashed var(--rule); }
.sh-courses li:first-child { border-top:0; }
.sh-courses a { display:flex; gap:12px; align-items:center; padding:10px 0; text-decoration:none; color:var(--navy) !important; }
.sh-courses img { width:56px; height:56px; object-fit:contain; background:#fff; border:1px solid var(--rule); flex:none; }
.sh-courses strong { display:block; font-size:.98rem; line-height:1.4; }
.sh-courses em { font-style:normal; color:var(--rust); font-weight:700; font-size:.92rem; }
.sh-related { margin-top:48px; padding-top:34px; border-top:1px solid var(--rule); }
.sh-related h2 { font-size:1.35rem; }

/* Exam page */
.sh-exam-body { display:grid; grid-template-columns:minmax(0,1fr) 320px; gap:32px; padding-top:30px; }
.sh-group { margin-bottom:38px; scroll-margin-top:140px; }
.sh-group h2 { font-size:1.35rem; padding-bottom:8px; border-bottom:2px solid var(--rule); }
.sh-side-card { background:var(--sheet); border:1px solid var(--rule); box-shadow:6px 6px 0 var(--rule); padding:18px; margin-bottom:22px; }
.sh-side-card h2 { font-size:1.15rem; margin-bottom:10px; }
.sh-side-card p { margin:0 0 12px; font-size:.95rem; }

@media (max-width:900px) {
	.sh-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
	.sh-exam-body { grid-template-columns:minmax(0,1fr); }
}
@media (max-width:600px) {
	.sh-grid, .sh-grid-2 { grid-template-columns:minmax(0,1fr); }
	.sh-hero { padding:28px 0 22px; }
	.sh-exams { grid-template-columns:repeat(2,minmax(0,1fr)); }
}