/* Gia Sư SV Physics 12 - desktop & mobile - scoped to Học & Thi components. */
.gsv-syllabus .gsv-quick-lesson,
.gsv-syllabus .gsv-quick-lesson-body,
.gsv-exam-layout,
.gsv-question,
.gsv-question .gsv-rich { min-width:0; max-width:100%; box-sizing:border-box; }
.gsv-syllabus .gsv-quick-lesson summary { overflow-wrap:anywhere; word-break:normal; }
.gsv-syllabus .gsv-quick-lesson summary strong { font-size:clamp(1rem, 1vw + .72rem, 1.16rem);line-height:1.4;letter-spacing:0; }
.gsv-syllabus .gsv-quick-lesson summary small { display:block;color:#60718b;line-height:1.55;margin-top:3px; }
.gsv-syllabus .gsv-quick-lesson { border-radius:15px; }
.gsv-syllabus .gsv-quick-lesson:focus-within {outline:2px solid #73ace0; outline-offset:2px;}
.gsv-study .gsv-stem, .gsv-study .gsv-option, .gsv-study .gsv-feedback,
.gsv-question .gsv-stem, .gsv-question .gsv-option, .gsv-question .gsv-feedback {font-size:clamp(1rem,.35vw + .93rem,1.105rem);line-height:1.64;overflow-wrap:break-word;}
.gsv-question img[src*="vl12-ch1-20261016"],.gsv-rich img[src*="vl12-ch1-20261016"] {
 display:block;max-width:100%;width:min(100%,760px);height:auto;object-fit:contain;border:1px solid #d7e8f5;border-radius:14px;
 background:#f6faff;margin:.85rem auto;
}
.gsv-question figure.gssv-vl12-figure,.gsv-rich figure.gssv-vl12-figure{max-width:100%;padding:0;margin:1.1rem auto;}
.gsv-question table,.gsv-rich table{max-width:100%;}
.gsv-question .gsv-options-grid{min-width:0;}
.gsv-question .gsv-option{align-items:flex-start;min-width:0;}
.gsv-question .gsv-option .gsv-rich{min-width:0;overflow-wrap:anywhere;}
.gsv-question button,.gsv-syllabus button{min-height:42px;}
@media(max-width:767px){
 .gsv-syllabus .gsv-quick-lesson summary{padding:13px 13px 12px;}
 .gsv-syllabus .gsv-quick-lesson summary strong{font-size:1.035rem;line-height:1.5;}
 .gsv-syllabus .gsv-quick-lesson summary small{font-size:.82rem;}
 .gsv-syllabus .gsv-quick-lesson-body{padding:12px 14px 17px;}
 .gsv-question{max-width:100%;}
 .gsv-question .gsv-stem{font-size:1rem;line-height:1.6;}
 .gsv-question .gsv-options-grid{grid-template-columns:minmax(0,1fr);gap:10px;}
 .gsv-question img[src*="vl12-ch1-20261016"]{border-radius:9px;margin:.7rem 0;}
 .gsv-question .gsv-rich,.gsv-question .gsv-rich p{overflow-wrap:anywhere;}
 .gsv-question .gsv-nav{max-width:100%;}
 .gsv-syllabus .gsv-actions{display:flex;flex-wrap:wrap;gap:9px;}
 .gsv-syllabus .gsv-actions button{max-width:100%;white-space:normal;}
}
@media(prefers-reduced-motion:reduce){.gsv-quick-lesson *{scroll-behavior:auto!important;}}