*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#05101d;color:#fff4d8;font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}button,a,select{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit;background:none;border:0}button:focus-visible,a:focus-visible{outline:3px solid #7cdeff;outline-offset:5px}button:disabled{cursor:wait;opacity:.55}[hidden]{display:none!important}
#panorama{position:fixed;inset:0;width:100%;height:100%;touch-action:none;cursor:grab}#panorama:active{cursor:grabbing}#hotspots{position:fixed;inset:0;pointer-events:none}.hotspot{position:absolute;left:0;top:0;pointer-events:auto;display:flex;align-items:center;flex-direction:column;gap:5px;transform:translate(-50%,-50%);padding:4px}.hotspot img{width:62px;height:62px;object-fit:contain;filter:drop-shadow(0 0 8px #ffe8a6);transition:transform .2s}.hotspot:hover img{transform:scale(1.16)}.hotspot span{white-space:nowrap;font-size:18px;text-shadow:0 2px 6px #000,0 0 10px #000;font-weight:600}.hotspot.visited span:after{content:' ✓';color:#9df5e3}
#hall-header{position:fixed;inset:18px 22px auto;display:flex;justify-content:space-between;align-items:flex-start;pointer-events:none}.title-plate{background:url(assets/题匾.png) center/100% 100% no-repeat;width:440px;min-height:90px;padding:17px 20px 17px 106px}.title-plate small{font-size:12px;letter-spacing:2px;color:#b7d4e9}.title-plate h1{font-size:26px;font-weight:600;margin:4px 0}.tools{display:flex;gap:20px;align-items:center;background:url(assets/信息底板.png) center/100% 100% no-repeat;padding:24px 32px;pointer-events:auto;font-size:15px}.tools button{padding:8px 0;text-shadow:0 2px 4px #000}.tools button[aria-pressed=true]{color:#8ee3fc}.tools button:hover{color:#a0e6ff}
#station-nav{position:fixed;bottom:46px;left:50%;transform:translateX(-50%);width:min(900px,94vw);display:flex;justify-content:space-evenly;background:url(assets/信息底板.png) center/100% 100% no-repeat;padding:20px 35px;gap:12px}#station-nav button{font-size:19px;line-height:1.5;padding:12px 4px;color:#c4d3df;white-space:nowrap}#station-nav button span{font-size:13px;margin-right:8px;color:#b9a87b}#station-nav button[aria-current=true]{color:#ffe4a8;text-shadow:0 0 15px #d69b30}#station-nav button.visited:after{content:' ✓';font-size:15px;color:#93e2d3}
#hall-hint{position:fixed;bottom:15px;left:24px;right:24px;display:flex;justify-content:space-between;font-size:13px;letter-spacing:1px;text-shadow:0 2px 6px #000;color:#e0e7ec}
#journey{position:fixed;inset:0;overflow:hidden;z-index:10;transition:opacity 1.1s;background:#071321}#journey.departed{opacity:0;pointer-events:none}#tunnel-background{width:100%;height:100%;object-fit:cover;transform-origin:50% 50%;position:absolute;inset:0;will-change:transform,filter}#journey:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,7,18,.35),transparent 35%,transparent 70%,rgba(0,7,18,.2));pointer-events:none}#arches{position:absolute;inset:0;pointer-events:none}.flying-arch{position:absolute;left:50%;top:50%;width:min(100vw,100vh);height:min(100vw,100vh);object-fit:contain;transform:translate(-50%,-50%) scale(.05);opacity:0;will-change:transform,opacity}#year-label{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:clamp(70px,12vw,170px);letter-spacing:.1em;color:#fff3cf;text-shadow:0 0 24px #132539,0 0 65px #ffc778;font-family:"Songti SC","SimSun",serif;z-index:2;pointer-events:none;opacity:0;will-change:transform,opacity}#journey-caption{position:absolute;bottom:8%;left:5%;right:5%;text-align:center;font-size:18px;letter-spacing:3px;text-shadow:0 2px 12px #000;opacity:0}#skip{position:absolute;right:30px;top:26px;font-size:16px;padding:14px;background:url(assets/信息底板.png) center/100% 100% no-repeat;z-index:3}#arrival-glow{position:absolute;inset:0;background:radial-gradient(circle at center,#fff7de 0%,rgba(255,238,189,.8) 12%,transparent 55%);opacity:0;pointer-events:none;z-index:2}
#welcome{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:6vw;background:linear-gradient(90deg,rgba(0,8,22,.94),rgba(0,8,22,.75) 30%,transparent 68%);z-index:3}#welcome small{font-size:16px;letter-spacing:4px;color:#b3d8e7}#welcome h1{font-family:"Songti SC","SimSun",serif;font-size:clamp(42px,5.8vw,82px);line-height:1.23;letter-spacing:4px;margin:23px 0;color:#ffe8b5;font-weight:500}#welcome p{font-size:18px;line-height:1.8;color:#c2d1de;margin:0 0 28px}#begin{padding:24px 72px 24px 100px;font-size:23px;background:url(assets/题匾.png) center/100% 100% no-repeat;min-width:310px}#direct{font-size:15px;padding:18px 0;color:#c9d9e4}#welcome>span{font-size:12px;letter-spacing:3px;color:#90a9be;margin-top:15px}#loading-status{position:fixed;left:24px;bottom:24px;max-width:88vw;z-index:40;font-size:15px;color:#fff5dc}
#exhibit-dialog,#finish{position:fixed;inset:0;background:rgba(1,7,18,.72);z-index:20;display:flex;justify-content:center;align-items:center;backdrop-filter:blur(5px)}.dialog-sheet{position:relative;background:url(assets/信息底板.png) center/100% 100% no-repeat;width:min(980px,94vw);max-height:94vh;padding:42px 60px;overflow:auto}.dialog-sheet>small,.finish-sheet>small{font-size:14px;letter-spacing:3px;color:#a6d2e8}.dialog-sheet h2{font-size:34px;letter-spacing:2px;margin:12px 0 24px;color:#ffe9b6;font-weight:500}#close-dialog{position:absolute;top:18px;right:26px;font-size:32px;padding:0 8px;color:#b5dae7}.exhibit-content{display:grid;grid-template-columns:1.08fr 1fr;gap:34px;align-items:center}.exhibit-content figure{margin:0}.exhibit-content img{display:block;width:100%;max-height:280px;object-fit:contain}.exhibit-content figcaption{font-size:12px;line-height:1.6;color:#b7c7d4;margin-top:12px}.exhibit-copy p{font-size:21px;line-height:1.85;margin:0 0 18px}.exhibit-copy .question{font-size:17px;color:#9bd6ed}#mark-visited{padding:17px 25px 17px 48px;font-size:17px;background:url(assets/题匾.png) center/100% 100% no-repeat}#mark-visited:disabled{opacity:.85;cursor:default}.dialog-bottom{margin-top:27px;display:flex;justify-content:space-between;align-items:center;gap:20px}.dialog-bottom a{font-size:12px;line-height:1.6;color:#b1c7d7;text-decoration:underline}.dialog-bottom button{font-size:18px;color:#ffe6ab;padding:8px}.finish-sheet{background:url(assets/信息底板.png) center/100% 100% no-repeat;width:min(780px,92vw);text-align:center;padding:60px 70px}.finish-sheet h2{font-family:"Songti SC","SimSun",serif;font-weight:500;font-size:38px;color:#ffe5a5}.finish-sheet h3{font-family:"Songti SC","SimSun",serif;font-size:54px;font-weight:500;margin:28px 0;color:#ffe5a5}.finish-sheet p{font-size:19px;line-height:1.7}.finish-sheet button{background:url(assets/题匾.png) center/100% 100% no-repeat;padding:20px 40px 20px 65px;font-size:19px;margin-top:12px}
.dialog-sheet,.finish-sheet{background-size:100% 130%}
@media(max-width:950px){#hall-header{inset:10px 10px auto;gap:8px}.title-plate{width:340px;min-height:78px;padding:18px 12px 14px 83px}.title-plate h1{font-size:21px}.title-plate small{font-size:10px}.tools{gap:13px;font-size:12px;padding:21px 22px}.dialog-sheet{padding:35px 40px}.exhibit-copy p{font-size:18px}.exhibit-content{gap:20px}.hotspot span{font-size:16px}#station-nav button{font-size:16px}}
@media(max-width:640px){#hall-header{flex-wrap:wrap}.tools{margin-left:auto;padding:15px 24px;gap:14px}.title-plate{width:320px}.exhibit-content{grid-template-columns:1fr;gap:16px}.exhibit-content img{max-height:24vh}.exhibit-copy p{font-size:17px;margin-bottom:12px}.dialog-sheet{padding:35px 30px;max-height:92vh}.dialog-sheet h2{font-size:27px;margin:10px 0 18px}#station-nav{gap:3px;padding:12px 15px;bottom:54px}#station-nav button{font-size:12px}#station-nav button span{display:block;font-size:12px;margin:0}#hall-hint{font-size:10px;left:12px;right:12px;letter-spacing:0}.hotspot img{width:47px;height:47px}.hotspot span{font-size:13px}#welcome{padding:7vw;background:linear-gradient(90deg,rgba(0,8,22,.85),rgba(0,8,22,.35))}#welcome p{font-size:15px;max-width:280px}#begin{font-size:20px;min-width:280px}#journey-caption{font-size:13px}.finish-sheet{padding:50px 35px}.finish-sheet h3{font-size:40px}.finish-sheet p{font-size:17px}}
@media(prefers-reduced-motion:reduce){#journey{transition:none}.hotspot img{transition:none}}
/* 老师确认版：照片与一句提问，讲解移至独立讲解稿。 */
.exhibit-content{grid-template-columns:1.35fr 1fr;gap:42px}
.exhibit-content img{max-height:310px}
.exhibit-content figcaption{font-size:16px;line-height:1.6}
.exhibit-copy .question{font-size:28px;line-height:1.55;color:#ffe9b6;margin:0 0 32px}
.dialog-bottom a{font-size:14px}
#welcome h1{margin-bottom:32px}
@media(max-width:950px){.exhibit-copy .question{font-size:23px}.exhibit-content{gap:24px}}
@media(max-width:640px){.exhibit-content{grid-template-columns:1fr;gap:18px}.exhibit-content img{max-height:28vh}.exhibit-copy .question{font-size:22px;margin:0 0 18px}.exhibit-content figcaption{font-size:14px}}