/* Gia Sư SV Physics 12 – Chapter 2–5 editorial R2. Scoped to existing study pages. */
.gssv-vl12v2 .gssv-vl12-deep{--p-ink:#193d53;--p-teal:#11796f;--p-line:#d2e4e9;font:inherit;color:var(--p-ink);margin:34px 0 30px;max-width:100%;overflow-wrap:break-word}
.gssv-vl12-deep,.gssv-vl12-deep *{box-sizing:border-box}
.gssv-vl12-deep h2{font-size:clamp(24px,2.4vw,33px);line-height:1.35;margin:9px 0 16px;letter-spacing:-.025em;color:#123c55}
.gssv-vl12-deep h3{font-size:clamp(18px,1.5vw,22px);margin:0 0 10px;line-height:1.45;color:#15536c}
.gssv-vl12-deep p,.gssv-vl12-deep li{font-size:clamp(16px,.35vw + 15px,18px);line-height:1.8;margin:0 0 14px}
.gssv-vl12-deep p:last-child,.gssv-vl12-deep li:last-child{margin-bottom:0}
.gssv-vl12-deep a{color:#126c78}
.gssv-vl12-deep :is(a,summary):focus-visible{outline:3px solid #d59f35;outline-offset:4px}
.gssv-vl12-label{font-size:12px;letter-spacing:.12em;font-weight:800;color:#137668}
.gssv-vl12-deep-head{padding:25px 28px;border:1px solid #b7d8d5;border-left:5px solid #198b7c;background:linear-gradient(105deg,#f0faf8,#f7fbff);border-radius:18px}
.gssv-vl12-deep-head p{max-width:900px;color:#315466}
.gssv-vl12-deep-index{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 30px}
.gssv-vl12-deep-index a{font-size:15px;line-height:1.4;padding:10px 15px;border-radius:30px;background:#eaf4f6;border:1px solid #ccdee4;text-decoration:none;min-height:44px;display:inline-flex;align-items:center}
.gssv-vl12-section{margin:30px 0;scroll-margin-top:100px}
.gssv-vl12-section>h2,.gssv-vl12-section-head>h2{border-left:5px solid #edba58;padding-left:16px}
.gssv-vl12-theory-step{display:grid;grid-template-columns:47px minmax(0,1fr);gap:15px;padding:21px 0;border-bottom:1px solid var(--p-line)}
.gssv-vl12-step-num{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:#e2f4ef;color:#117768;font:800 15px/1 system-ui,sans-serif}
.gssv-vl12-theory-step>div:last-child{min-width:0}
.gssv-vl12-example-list,.gssv-vl12-checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:20px 0}
.gssv-vl12-example,.gssv-vl12-check{border:1px solid #d5e4e9;border-radius:14px;padding:19px;background:white;min-width:0;box-shadow:0 8px 18px #12394b08}
.gssv-vl12-example-title{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start;margin-bottom:12px}
.gssv-vl12-example-title>span{background:#def2ed;color:#166b5a;border-radius:7px;padding:4px 7px;font-size:11px;letter-spacing:.06em;font-weight:800}
.gssv-vl12-example-title>h3{font-size:16px;line-height:1.5;min-width:0;flex:1}
.gssv-vl12-example details,.gssv-vl12-check details{margin:12px 0 0;border:1px solid #d7e5eb;padding:0;border-radius:10px;overflow:hidden;background:#f7fbfb}
.gssv-vl12-example summary,.gssv-vl12-check summary{cursor:pointer;min-height:45px;padding:10px 14px;color:#136e72;font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px}
.gssv-vl12-example details ol,.gssv-vl12-check details p{padding:12px 20px 18px;margin:0}
.gssv-vl12-example ol{margin:0;padding-left:26px}
.gssv-vl12-example ol li{font-size:15px;margin:6px 0;line-height:1.75}
.gssv-vl12-application-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin:17px 0}
.gssv-vl12-app{padding:20px;border-radius:14px;background:#eaf6fb;border-left:4px solid #2c89aa}
.gssv-vl12-app:nth-child(even){background:#f1f9f2;border-color:#459971}
.gssv-vl12-warnings{border:1px solid #e6d9b7;border-radius:13px;background:#fff9ec;padding:20px 24px}
.gssv-vl12-warnings ol{margin:0 0 0 19px;padding:0}
.gssv-vl12-warnings li{font-size:16px;line-height:1.7}
.gssv-vl12-check>strong{font-size:12px;color:#0c746b;letter-spacing:.06em;display:block;margin-bottom:11px}
.gssv-vl12-check>.gssv-vl12-mcq-options,.gssv-vl12-check>.gssv-vl12-tf-options{padding-left:25px;margin:10px 0}
.gssv-vl12-check :is(.gssv-vl12-mcq-options,.gssv-vl12-tf-options) li{margin-bottom:4px;line-height:1.5;font-size:15px}
.gssv-vl12-map-upgraded{margin:36px 0 25px;padding:20px;border:1px solid var(--p-line);border-radius:16px}
.gssv-vl12-new-map{margin:16px 0 0;min-width:0}
.gssv-vl12-new-map img{display:block;width:100%;max-width:100%;height:auto;border:1px solid #d0e2e6;border-radius:12px;object-fit:contain;background:#f7fbfe}
.gssv-vl12-new-map a{display:block;max-width:100%;text-decoration:none}
.gssv-vl12-new-map figcaption{font-size:14px;color:#587180;margin-top:9px}
.gssv-vl12v2-full-links{border:1px solid #c9e4e0;border-radius:18px;background:#f5fbfa;padding:25px;margin:32px 0;scroll-margin-top:90px}
.gssv-vl12v2-full-links h2{font-size:clamp(23px,2.5vw,31px);margin:11px 0;line-height:1.4;color:#113e55}
.gssv-vl12v2-full-links>p{font-size:16px;color:#48677a}
.gssv-vl12v2-full-links ul{list-style:none;padding:0;margin:18px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.gssv-vl12v2-full-links li{display:grid;gap:4px;border-radius:10px;background:white;border:1px solid #d7e7e7;padding:13px 15px;margin:0}
.gssv-vl12v2-full-links li a{font-weight:700;text-decoration:none;font-size:16px;color:#126671;overflow-wrap:anywhere}
.gssv-vl12v2-full-links li small{font-size:13px;color:#5d7382}
@media(max-width:830px){.gssv-vl12-example-list,.gssv-vl12-checks,.gssv-vl12-application-grid,.gssv-vl12v2-full-links ul{grid-template-columns:1fr}}
@media(max-width:600px){
 .gssv-vl12-deep{padding:0 1px}
 .gssv-vl12-deep-head{padding:17px 15px}
 .gssv-vl12-deep h2{font-size:23px;letter-spacing:0}
 .gssv-vl12-theory-step{grid-template-columns:32px minmax(0,1fr);gap:10px;padding:17px 0}
 .gssv-vl12-step-num{width:30px;height:30px;border-radius:9px;font-size:12px}
 .gssv-vl12-example,.gssv-vl12-check{padding:14px 12px}
 .gssv-vl12-warnings,.gssv-vl12v2-full-links{padding:15px 12px}
 .gssv-vl12-map-upgraded{padding:11px 8px}
 .gssv-vl12-deep-index a{padding:9px 12px;font-size:14px}
 .gssv-vl12-deep p,.gssv-vl12-deep li{font-size:16px;line-height:1.72}
}
@media(prefers-reduced-motion:reduce){.gssv-vl12-deep *{scroll-behavior:auto!important}}