#opening-brief-v37 { width:min(580px,calc(100vw - 32px)); max-height:calc(100svh - 36px); padding:32px 36px 28px; border:1px solid #b99859; border-radius:5px; background:linear-gradient(115deg,#fff9e9,#f2e5cb); color:#383429; box-shadow:inset 0 0 0 6px #e9d6ae, inset 0 0 0 7px #bda47580,0 22px 75px #041b21bb; }
#opening-brief-v37::backdrop { background:#0d252947; backdrop-filter:blur(4px); }
#opening-brief-v37 .brief-close { position:absolute; top:12px; right:12px; width:44px; height:44px; border:1px solid #a98a51; background:#1d443b; color:#f9dfad; border-radius:50%; font:27px/1 var(--serif); }
#opening-brief-v37 .brief-kicker { margin:0 0 14px; color:#926c36; font:11px/1.6 var(--serif); letter-spacing:.13em; }
#opening-brief-v37 h2 { font:700 28px/1.4 var(--serif); color:#243e33; margin:0 0 16px; }
#opening-brief-v37 .brief-cloud { display:block; width:72px; height:28px; background:url('assets/cloud-corner-v18.svg') left center/contain no-repeat; margin-bottom:16px; }
#opening-brief-v37 p { font:15px/1.95 'FangSong','STFangsong',var(--serif); margin:12px 0; }
#opening-brief-v37 .brief-lead { color:#315441; border-left:3px solid #bda367; padding-left:14px; }
#opening-brief-v37 .brief-history { margin-top:18px; border-block:1px solid #b99a5d55; padding:12px 0; }
#opening-brief-v37 summary { cursor:pointer; min-height:44px; color:#695335; font:13px/1.7 var(--serif); display:flex; align-items:center; }
#opening-brief-v37 summary::after { content:'＋'; margin-left:auto; padding-left:12px; color:#2e5743; }
#opening-brief-v37 details[open] summary::after { content:'−'; }
#opening-brief-v37 .brief-history p { font-size:13px; }
#opening-brief-v37 .brief-history nav { display:grid; gap:3px; }
#opening-brief-v37 a { font:11px/1.7 var(--serif); color:#2e5743; min-height:44px; padding:10px 0; width:fit-content; border-bottom:1px solid #b79a65; }
#opening-brief-v37 footer { display:flex; gap:18px; align-items:center; margin-top:20px; }
#opening-brief-v37 .brief-enter { display:flex; align-items:center; justify-content:space-between; gap:60px; min-height:46px; padding:10px 19px; background:#214b3d; border:1px solid #b49759; color:#ffe3b0; font:16px/1.5 var(--serif); }
#opening-brief-v37 .brief-dismiss { min-height:44px; color:#786144; font:12px var(--serif); text-decoration:underline; text-underline-offset:5px; }
#opening-brief-v37 :focus-visible { outline:2px solid #987241; outline-offset:3px; }
.gate-footnote .brief-reopen-v37 { pointer-events:auto; min-height:44px; color:#e9cf9b; font:12px/1.6 var(--serif); padding:8px 0; border-bottom:1px solid #bca57266; }
@media(max-width:600px){#opening-brief-v37{padding:28px 22px 24px;}#opening-brief-v37 h2{font-size:25px;}#opening-brief-v37 p{font-size:14px;}#opening-brief-v37 footer{gap:16px;}#opening-brief-v37 .brief-enter{gap:28px;font-size:15px;}}