/* ===== SmartStudyDZ — public study pages (BAC hub, subjects, guide) ===== */
.sd .sx-hero{padding:34px 0 10px}
.sd .sx-crumbs{display:flex;gap:6px;flex-wrap:wrap;font-size:13.5px;font-weight:700;color:var(--muted);margin-bottom:10px}
.sd .sx-crumbs a{color:var(--blue)}
.sd .sx-hero h1{font-size:clamp(28px,5vw,40px);font-weight:800;color:var(--navy);margin:0 0 10px;line-height:1.3;text-wrap:balance}
.sd .sx-lead{max-width:760px;color:var(--text);font-size:17px;line-height:1.95;margin:0 0 10px}
.sd .sx-date{color:var(--muted);font-weight:700;font-size:14px}
.sd .sx-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.sd .sx-tags span{background:var(--sky);color:var(--blue);font-weight:800;font-size:13px;border-radius:999px;padding:4px 12px}
.sd .sx-sec{padding-top:26px}
.sd .sx-sec h2{font-size:23px;color:var(--navy);margin:26px 0 12px;font-weight:800}
.sd .sx-sec h2:first-child{margin-top:0}
.sd .sx-note{color:var(--muted);font-weight:600;margin:0 0 12px}
.sd .sx-subjects{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.sd .sx-sub{display:grid;gap:4px;padding:16px;border-radius:18px;background:#fff;border:1.5px solid var(--line);color:var(--navy);transition:transform .2s,border-color .2s}
.sd .sx-sub:hover{transform:translateY(-3px);border-color:var(--orange)}
.sd .sx-sub i{font-size:22px;color:var(--blue)}.sd .sx-sub b{font-size:17px}.sd .sx-sub small{color:var(--muted);font-weight:600}
.sd .sx-streams{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px;margin-top:18px}
.sd details{background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:10px 14px}
.sd details summary{cursor:pointer;font-weight:800;color:var(--navy)}
.sd details p{margin:8px 0 0;line-height:1.9}
.sd .sx-plan{display:grid;gap:12px;padding:0;list-style:none;counter-reset:p}
.sd .sx-plan li{background:#fff;border:1.5px solid var(--line);border-radius:16px;padding:14px 16px}
.sd .sx-plan b{color:var(--navy)}.sd .sx-plan p{margin:4px 0 0;line-height:1.9}
.sd .sx-two{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:start}
.sd .sx-main p,.sd .sx-main li{line-height:2;font-size:16.5px}
.sd .sx-chapters{padding-inline-start:22px;display:grid;gap:8px}
.sd .sx-chapters b{color:var(--navy)}.sd .sx-chapters p{margin:2px 0 0;color:var(--muted)}
.sd .sx-steps,.sd .sx-list{padding-inline-start:22px;display:grid;gap:6px}
.sd .sx-list.warn li::marker{color:#C2410C}
.sd .sx-qs{display:grid;gap:12px}
.sd .sx-q{background:#fff;border:1.5px solid var(--line);border-radius:16px;padding:14px 16px}
.sd .sx-q p{margin:6px 0;unicode-bidi:plaintext}
.sd .sx-qch{font-size:12.5px;font-weight:800;color:var(--blue);background:var(--sky);border-radius:999px;padding:2px 10px}
.sd .sx-opts{margin:6px 0;padding-inline-start:22px}
.sd .sx-tf{font-weight:700;color:var(--muted)}
.sd .sx-q details{border:0;padding:0;background:transparent}
.sd .sx-side{display:grid;gap:14px;position:sticky;top:90px}
.sd .sx-box{background:#fff;border:1.5px solid var(--line);border-radius:18px;padding:16px;display:grid;gap:8px}
.sd .sx-box b{color:var(--navy);font-size:16px}.sd .sx-box ul{margin:0;padding-inline-start:20px;display:grid;gap:4px}.sd .sx-box p{margin:0;color:var(--muted)}
.sd .sx-links a{color:var(--blue);font-weight:700}
.sd .btn-wa{background:#25D366;color:#fff;border-color:#25D366}
.sd .sx-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.sd .sx-card{display:grid;gap:6px;padding:18px;border-radius:18px;background:#fff;border:1.5px solid var(--line);color:var(--navy)}
.sd .sx-card p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.8}.sd .sx-card span{color:var(--blue);font-weight:800}
.sd .sx-article h2{margin-top:30px}
.sd .sx-narrow{max-width:820px}
.sd .sx-faq{display:grid;gap:10px}
.sd .sx-cta{text-align:center;display:grid;justify-items:center;gap:8px}
.sd .sx-ctas{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
@media (max-width:900px){.sd .sx-two{grid-template-columns:1fr}.sd .sx-side{position:static}}
html[data-theme=dark] .sd :is(.sx-sub,details,.sx-plan li,.sx-q,.sx-box,.sx-card){background:#12233A;border-color:#23405F;color:#EAF2FB}