.std-hero{padding:28px 0 10px}
.std-filters{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:flex-start;margin:14px 0 6px}
.std-filters .lbl{font-family:var(--font-display);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-2);margin-right:4px}
.std-search{display:flex;flex-direction:column;gap:4px;min-width:220px;flex:0 0 auto}
.std-search input{font:inherit;font-size:.95rem;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);width:min(100%,320px)}
.std-roles{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.std-roles .lbl{width:100%;margin:0 0 2px}
.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:5px 12px;font-size:.86rem;cursor:pointer;color:var(--ink);font-family:inherit}
.chip[aria-pressed="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}
.std-count{font-size:.88rem;color:var(--ink-2);margin:6px 0 0}
.stack-card{margin-top:10px}
.ladder{display:grid;gap:4px;margin:12px 0}
.lrow{display:grid;grid-template-columns:minmax(0,1fr);gap:2px}
@media (min-width:760px){.lrow{grid-template-columns:130px minmax(0,1.4fr) minmax(0,1fr)}}
@media (max-width:759px){.lrow.lhead{display:none}.lrow>div[role=cell]:last-child{border-left:3px solid var(--line);opacity:.85}.lrow>div[role=cell]:last-child::before{content:'Legacy DSRC: ';font-family:var(--font-display);font-weight:700;font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-2)}}
.lrow>div{padding:10px 12px;background:var(--paper-2);border-radius:6px;font-size:.9rem}
.lrow .lk{font-family:var(--font-display);font-weight:700;background:var(--navy);color:#fff}
.lrow.lhead>div{background:transparent;font-family:var(--font-display);font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-2);padding-bottom:2px}
.lrow.lhead .lk{background:transparent;color:var(--ink-2)}
.stack-two{display:grid;gap:16px;grid-template-columns:minmax(0,1fr);margin-top:8px}
@media (min-width:760px){.stack-two{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.sf-l{font-family:var(--font-display);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-2);margin:10px 0 4px}
.sf-l:first-child{margin-top:0}
.psid-tbl{font-size:.86rem}
table.psid-tbl td.k{width:40%}
.std-group{margin-top:28px}
.std-group[hidden]{display:none}
.std-group h2{font-size:1.25rem;margin:0 0 4px;padding-bottom:6px;border-bottom:2px solid var(--yellow)}
.std-lede{margin:0 0 12px;font-size:.95rem;color:var(--ink-2)}
.std-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}
.std-card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;display:flex;flex-direction:column;gap:8px;box-shadow:var(--shadow);scroll-margin-top:150px}
.std-card[hidden]{display:none}
.std-card:target{outline:3px solid var(--yellow)}
.std-card h3{margin:0;font-size:1.05rem;line-height:1.3}
.std-title{font-size:.9rem;color:var(--ink-2);margin-top:2px}
.std-body{font-family:var(--font-display);font-weight:700;font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3);margin-top:4px}
.std-card p{margin:0;font-size:.92rem}
.std-role{color:var(--ink-2)}
.std-role strong{color:var(--ink)}
.std-meta{display:flex;flex-direction:column;gap:6px;font-size:.84rem;color:var(--ink-2);margin-top:2px}
.std-meta strong{color:var(--ink)}
.tags{display:flex;flex-wrap:wrap;gap:5px}
.tag{font-size:.74rem;border-radius:5px;padding:2px 7px;background:var(--paper-2);color:var(--ink-2);border:1px solid var(--line-2)}
.std-links{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:6px}
.std-links .pl{font-size:.8rem;border:1px solid var(--line);border-radius:999px;padding:3px 10px;text-decoration:none;color:var(--navy);background:var(--paper)}
.std-links .pl:hover{border-color:var(--navy)}
.std-links .pl.wiki{background:var(--yellow);color:var(--navy);border-color:var(--yellow-deep)}
.std-links .pl.ext{color:var(--ink-2)}
.std-links .pl.anchor{color:var(--ink-3);margin-left:auto}
.std-foot{margin-top:28px}
@media (max-width:700px){.std-grid{grid-template-columns:1fr}.std-search input{width:100%}}