:root{font-family:"Microsoft YaHei",system-ui,sans-serif;color:#222;background:#fff;line-height:1.5;font-size:16px}*{box-sizing:border-box}body{margin:0}header{max-width:1040px;margin:0 auto;padding:18px 16px 10px;text-align:center}header h1{font-size:clamp(20px,3.3vw,28px);margin:0;font-weight:700}main{max-width:1040px;margin:0 auto 28px;padding:0 18px}h1,h2{font-size:20px;margin:14px 0 10px}p{margin:6px 0}#progress{margin:0 0 12px}#progress p{font-size:12px;color:#666;margin:2px 0}progress{display:block;width:100%;height:6px;accent-color:#466c52}fieldset{border:0;border-bottom:1px solid #e5e5e5;margin:0 0 9px;padding:0 0 9px;min-width:0;scroll-margin-top:calc(56vh + 45px)}legend{font-weight:600;margin:0 0 5px;padding:0;line-height:1.5;width:100%}label{cursor:pointer}input,button{font:inherit}input[type=radio],input[type=checkbox]{width:15px;height:15px;accent-color:#466c52;vertical-align:middle;margin:0 6px 2px 0;flex:none}input[type=text]{border:1px solid #bbb;border-radius:3px;padding:5px 8px;width:min(100%,420px);font:inherit}input#code{width:200px}.choices{display:flex;flex-wrap:wrap;align-items:start;gap:4px 22px}.choices label{display:flex;align-items:baseline;gap:0;padding:3px 0;max-width:100%;font-size:15px}.choices label:has(input:checked){color:#234c2e}.frequency-choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:3px 16px;max-width:680px}.frequency-choices label{white-space:nowrap}.styles{margin:10px 0 14px}.styles p{margin:3px 0}.styles strong{font-weight:750}.question{margin:10px 0 0}.question p{font-weight:600;margin:0 0 5px}.sticky{position:sticky;top:0;z-index:3;background:#fff;padding-bottom:5px;margin:0 0 12px}.progress{font-size:12px;padding:2px 0;color:#555}.video{background:#101c16}.video iframe{display:block;width:100%;height:clamp(320px,56vh,580px);border:0}.scroll{overflow:auto}table{border-collapse:collapse;width:100%;font-size:14px;margin:4px 0 7px}th,td{padding:5px 8px;border:1px solid #d2d2d2;text-align:center}th{font-weight:600}th:first-child{width:14%}.actions{display:flex;gap:12px;justify-content:space-between;margin:18px 0}button{background:#466c52;color:#fff;border:0;border-radius:4px;padding:8px 18px;cursor:pointer}button.secondary{background:#eee;color:#333}button:disabled{opacity:.5}button:focus-visible,input:focus-visible{outline:2px solid #466c52;outline-offset:3px}.complete{text-align:center;padding:30px 0}.complete .actions{justify-content:center}.error-summary{color:#a32014;background:#fff0ed;padding:8px;margin:10px 0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}#notice{display:none;position:fixed;bottom:16px;left:50%;transform:translateX(-50%);max-width:94vw;background:#333;color:#fff;padding:9px 14px;border-radius:4px;z-index:6;font-size:14px}@media(max-width:600px){header{padding:14px 10px 8px}main{padding:0 10px}h1,h2{font-size:18px}fieldset{margin-bottom:8px;padding-bottom:8px;scroll-margin-top:calc(46vh + 38px)}.choices{gap:3px 16px}.choices label{font-size:14px}.frequency-choices{gap:3px 7px}.video iframe{height:46vh;min-height:290px;max-height:580px}th,td{font-size:13px;padding:4px}input[type=text]{max-width:100%}.sticky{margin-bottom:10px}.actions{gap:8px}.actions button{padding:8px 12px}}
/* Keep browser focus/validation and scroll-into-view below the taller player. */
html{scroll-padding-top:calc(56vh + 48px)}
@media(max-width:600px){html{scroll-padding-top:calc(46vh + 40px)}}
/* Calm park palette, spacious questionnaire and independent viewing column. */
:root{color:#253b36;background:#f2f5f1;font-family:"Microsoft YaHei",system-ui,sans-serif;line-height:1.65}header{max-width:none;padding:23px 28px 18px;background:#fff;border-bottom:1px solid #e1e7e1}header h1{font-size:23px;letter-spacing:.06em}main{max-width:960px;padding:26px 32px;margin:auto}#app>h1{margin:8px 0 26px}fieldset{background:#fff;border:1px solid #e2e8e1;border-radius:12px;margin:0 0 18px;padding:16px 20px;scroll-margin-top:20px}legend{float:left;margin:0 0 12px;font-size:15px}legend+.choices,legend+input,legend+.scroll{clear:both}.choices{gap:6px 20px}.choices label{padding:6px 0}.choices label:has(input:checked){color:#236b52}input[type=text]{border-radius:7px;padding:9px 12px;border-color:#ccd7cd}button{border-radius:8px;background:#2e6553;padding:11px 20px}button.secondary{background:#e5ece5;color:#365847}table{background:#fff;border-radius:6px;overflow:hidden}th,td{border-color:#e3e9e2;padding:9px 6px}thead{background:#edf3ec}tbody th{background:#f7f9f6}.styles{font-size:13px;background:#e9f0e7;border-radius:10px;padding:16px 18px;margin:20px 0}.question-panel>p{color:#6a7c71;font-size:14px}html{scroll-padding-top:20px}.scene-page{height:100dvh;overflow:hidden}.scene-page header{height:76px;padding:22px 20px}.scene-page main{max-width:none;margin:0;padding:0;height:calc(100dvh - 76px)}.scene-page #progress{position:absolute;right:0;top:76px;width:48%;height:53px;padding:9px 32px;background:#fff;z-index:2;border-bottom:1px solid #e1e7e1}.scene-page #app{display:grid;grid-template-columns:52% 48%;height:100%}.scene-page .sticky{position:relative;margin:0;padding:0;min-width:0;background:#172b25;color:#edf4ed;display:flex;flex-direction:column;overflow:hidden}.sticky>.progress{padding:15px 24px;color:#dae7dc;font-size:13px}.video{position:relative;flex:1;min-height:0;background:#101c16}.video iframe,.video video{display:block;width:100%;height:100%;border:0;object-fit:contain}.video video[hidden],#panorama[hidden]{display:none}#panorama{width:100%;height:100%;touch-action:none;cursor:grab}#panorama canvas{display:block}.video-caption{padding:10px 24px;font-size:12px;color:#cad8ca;overflow-wrap:anywhere}.player-tools{position:absolute;top:14px;right:14px;display:flex;gap:8px}.player-tools button{background:#203c32e6;border:1px solid #6c8474;font-size:12px;padding:7px 12px}#playerMessage{position:absolute;bottom:55px;left:18px;right:18px;background:#142d25cf;color:white;border-radius:7px;font-size:12px;padding:8px 12px;pointer-events:none}#playerMessage:empty{display:none}.question-panel{overflow-y:auto;padding:75px 30px 24px;min-width:0;scroll-behavior:smooth}.question-panel h2{margin:0 0 8px;font-size:22px}.question-panel fieldset{padding:16px}.question-panel .frequency-choices{gap:4px 8px}.frequency-choices label{font-size:13px}.actions{margin-top:26px}.complete{background:#fff;border-radius:16px;padding:50px 20px}@media(max-width:760px){header h1{font-size:18px}.scene-page header{height:64px;padding:18px 10px}.scene-page main{height:calc(100dvh - 64px)}.scene-page #app{grid-template-columns:1fr;grid-template-rows:36% 64%}.scene-page #progress{top:calc(64px + (100dvh - 64px)*.36);width:100%;height:48px;padding:6px 16px}.sticky>.progress{padding:5px 14px}.video-caption{display:none}.question-panel{padding:64px 12px 22px}.video iframe{min-height:0;max-height:none}.question-panel h2{font-size:19px}main{padding:20px 12px}fieldset{padding:14px}.scene-page .sticky{margin:0}.choices{gap:4px 14px}.choices label{font-size:14px}.frequency-choices label{font-size:12px}.video video{min-height:0}#playerMessage{bottom:40px;font-size:11px;padding:4px 8px}}
/* Questionnaire refinements: no duplicate site title, taller/narrower scene. */
header,.scene-page header{height:0;padding:0;border:0;overflow:hidden}.introduction{background:#fff;border:1px solid #e2e8e1;border-radius:12px;padding:20px 24px;margin:0 0 28px;line-height:1.9}.introduction p{margin:0 0 10px}.introduction p:last-child{margin-bottom:0}#experiences .choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px;align-items:stretch}#experiences .choices label{align-items:flex-start;line-height:1.7;padding:4px 0}#experiences input{margin-top:6px}#experiences .choices label:last-child{grid-column:1 / -1}.scene-page main{height:100dvh}.scene-page #app{grid-template-columns:40% 60%}.scene-page #progress{top:0;width:60%}.question-panel table,.question-panel th,.question-panel td{font-size:16px}.sticky>.progress{padding:8px 18px}.video:fullscreen{width:100vw;height:100dvh;background:#101c16}.video-controls{position:absolute;bottom:0;left:0;right:0;display:flex;flex-wrap:wrap;align-items:center;gap:8px;background:#14271feb;color:#fff;padding:10px 12px;font-size:12px}.video-controls button{padding:5px 9px;font-size:12px;background:#365e4e}.video-controls input{accent-color:#a6d6b9;min-width:0}.video-controls .seek{flex:1 0 100%;width:100%}.video-controls .volume{width:75px}.video-controls output{font-variant-numeric:tabular-nums;margin-right:auto}#playerMessage{bottom:96px}.video video{padding-bottom:82px}.video #panorama{height:calc(100% - 82px)}@media(max-width:760px){.scene-page #app{grid-template-columns:1fr;grid-template-rows:40% 60%}.scene-page #progress{top:40dvh;width:100%}.question-panel th,.question-panel td{font-size:15px}#experiences .choices{gap:10px 16px}#experiences .choices label{font-size:13px}.introduction{padding:16px}.player-tools{top:8px;right:8px}.video-controls{padding:5px 10px;gap:4px 8px}.video video{padding-bottom:68px}.video #panorama{height:calc(100% - 68px)}#playerMessage{bottom:74px}}
.scene-annotation{margin-left:12px;font-size:13px;font-weight:400;overflow-wrap:anywhere}.video video.panorama-source{display:block!important;position:absolute;left:0;top:0;width:1px;height:1px;min-height:0;padding:0;opacity:.01;pointer-events:none}.player-tools{flex-wrap:wrap;max-width:calc(100% - 28px)}
.survey-title{text-align:center;font-size:clamp(21px,3vw,28px);letter-spacing:.04em;padding:4px 0 8px}.video video.panorama-source{position:absolute;inset:0;width:100%;height:100%;opacity:1;z-index:0}.video #panorama{position:relative;z-index:1;background:#101c16}.player-tools,.video-controls{z-index:3}#playerMessage{z-index:3}