:root{color-scheme:dark;--ink:#edf0e5;--muted:#9ca9a5;--line:#34443f;--accent:#d8d9b5;font-family:"PingFang SC","Microsoft YaHei",sans-serif;background:#131b19;color:var(--ink)}
*{box-sizing:border-box}body{margin:0}button,input,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit}button:disabled{cursor:wait;opacity:.4}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button:focus-visible,a:focus-visible,canvas:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid #d5d4a6;outline-offset:5px}main{max-width:1500px;margin:auto;padding:26px 44px 38px}header{display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}header i{font-style:normal;margin:0 10px;color:#a3b0aa}.intro{display:flex;justify-content:space-between;align-items:end;gap:24px;margin:26px 0 18px}.eyebrow{font-size:11px;letter-spacing:.23em;color:#b4c0ad;margin:0 0 13px}h1{font-weight:500;letter-spacing:.025em;font-size:clamp(24px,2.5vw,36px);margin:0 0 11px}.intro p:not(.eyebrow){margin:0;color:var(--muted);font-size:13px;line-height:1.7}.duration{font-size:11px;color:var(--muted);white-space:nowrap;padding-bottom:3px}.experience{border:1px solid #42514a;border-radius:12px;overflow:hidden;background:#19221e}.stage{position:relative;width:100%;height:min(56vh,780px);min-height:380px;overflow:hidden;background:#bfc8c3}#world{display:block;width:100%;height:100%;touch-action:none;cursor:grab}#world:active{cursor:grabbing}.scene-caption{position:absolute;top:18px;left:20px;display:flex;align-items:center;gap:14px;border:1px solid #ffffff21;background:#14231eab;backdrop-filter:blur(14px);padding:9px 12px;border-radius:6px;pointer-events:none;font-size:12px}.scene-caption small{font-size:11px;font-variant-numeric:tabular-nums;color:#cfdbcf}.gesture{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);font-size:11px;color:#f3f5e9;background:#182b25b3;border:1px solid #ffffff25;border-radius:30px;padding:10px 16px;pointer-events:none;margin:0;white-space:nowrap}.gesture span{margin-left:12px}#loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#19231ef5;color:#d8dfd1;font-size:13px}#loading[hidden]{display:none}.loading-dot{height:8px;width:8px;border-radius:50%;background:var(--accent);box-shadow:none}.transport{display:flex;align-items:center;gap:24px;padding:20px 22px}.transport button{border:0;background:transparent;padding:9px 0;font-size:12px;white-space:nowrap}#play{display:flex;gap:10px;align-items:center;min-width:92px}#play-icon{width:22px;height:22px;display:grid;place-items:center;border:1px solid #79877b;border-radius:50%;font-size:11px}.timeline{flex:1}.ticks{display:flex;justify-content:space-between;align-items:center;margin-bottom:7px}.ticks button{font-size:11px!important;color:var(--muted);padding:0!important}.ticks button[aria-current=true]{color:var(--accent)}input[type=range]{display:block;appearance:none;width:100%;height:3px;border-radius:4px;background:linear-gradient(to right,var(--accent) var(--progress,0%),#46534b var(--progress,0%));margin:10px 0;cursor:ew-resize}input[type=range]::-webkit-slider-thumb{appearance:none;width:15px;height:15px;border:2px solid #18241d;border-radius:50%;background:var(--accent);box-shadow:0 0 0 1px var(--accent)}input[type=range]::-moz-range-thumb{width:12px;height:12px;background:var(--accent);border:2px solid #18241d;border-radius:50%}#elapsed{font-size:11px;font-variant-numeric:tabular-nums;color:var(--muted)}#home{color:var(--muted)}.footnote{display:flex;justify-content:space-between;gap:20px;font-size:11px;line-height:1.8;color:#92a095;margin:15px 2px 26px}.inspection{border-top:1px solid var(--line);font-size:12px;color:var(--muted)}summary{cursor:pointer;padding:16px 0;width:fit-content}.inspection-inner{padding:0 0 12px;display:flex;gap:20px;flex-wrap:wrap;align-items:center}.variants{display:flex;gap:6px}.variants button{background:transparent;border:1px solid #41534b;border-radius:5px;padding:9px 13px;font-size:11px}.variants button[aria-pressed=true]{background:#d2d8ba;color:#1e2922;border-color:#d2d8ba}.inspection label{display:flex;gap:7px;align-items:center;font-size:11px}.inspection p{width:100%;margin:0;font-size:11px;line-height:1.8;max-width:900px}#diagnostic-status{color:#a3b0aa}
@media(max-width:700px){main{padding:18px 16px 24px}header{font-size:11px}.intro{margin:30px 0 19px}.intro p:not(.eyebrow){font-size:12px}.duration{display:none}.stage{height:57vh;min-height:390px}.transport{padding:15px 12px;gap:13px}#play{min-width:24px}#play-label,#home span,#elapsed{display:none}.timeline{min-width:0}.ticks button{font-size:11px!important}.footnote{flex-direction:column;gap:5px;font-size:11px}.scene-caption{top:12px;left:12px;font-size:11px}.gesture{font-size:11px}.variants button{padding:9px;font-size:11px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

h1{font-family:"Songti SC","Noto Serif CJK SC",serif;font-weight:400}.intro{margin-top:34px}svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}#play-icon svg{width:14px;height:14px}#home{display:flex;align-items:center;gap:8px}::selection{background:#d8d9b5;color:#18241d}.transport button:hover,.ticks button:hover{color:#fff9e9}.inspection a{text-decoration:underline;text-underline-offset:4px}.inspection a:hover{color:#fff9e9}

.inspection p{font-size:12px}.transport button{min-height:32px}.ticks button{min-height:28px}.inspection-inner label{min-height:32px}@media(max-width:700px){.transport button,.ticks button,.variants button{min-height:44px}.scene-caption{max-width:calc(100% - 24px)}}

[hidden]{display:none!important}
.bookroom-entry{position:absolute;right:20px;bottom:20px;background:#233e32ec;color:#f9f2de;border:1px solid #f6edcf70;padding:13px 18px;border-radius:5px;font-size:12px}
body.book-portal{height:100vh;overflow:hidden}
.book-portal main{max-width:none;height:100%;padding:0}
.book-portal header,.book-portal .intro,.book-portal .footnote,.book-portal .inspection{display:none}
.book-portal .experience{height:100%;border:0;border-radius:0;position:relative}
.book-portal .stage{height:100%;min-height:0}
.book-portal .transport{position:absolute;bottom:12px;left:12px;right:12px;padding:8px 15px;gap:18px;background:#16271ee8;border:1px solid #d5dec338;border-radius:5px;backdrop-filter:blur(12px)}
.book-portal .gesture,.book-portal .bookroom-entry{bottom:100px}
@media(max-width:700px){.book-portal .transport{left:8px;right:8px;bottom:8px;padding:5px 10px;gap:12px}.book-portal .bookroom-entry{right:12px}.book-portal .ticks button{font-size:10px!important}}

#book-photo-bridge{position:absolute;inset:0;opacity:0;overflow:hidden;pointer-events:none;z-index:5}#book-photo{position:absolute;display:block;max-width:none}
.visit-transport{display:flex;gap:10px;padding:19px 22px;min-height:91px;align-items:center;justify-content:center;flex-wrap:wrap}
.visit-transport button{border:1px solid #627665;background:transparent;border-radius:4px;padding:12px 18px;font-size:12px}
.visit-transport button[data-visit-action=enter],.visit-transport button[data-visit-action=read],.visit-transport button[data-visit-action=photo]{background:#d8d9b5;color:#1b3025;border-color:#d8d9b5}
.visit-transport button:hover:not(:disabled){filter:brightness(1.12)}
#visit-caption{position:absolute;bottom:16px;left:18px;pointer-events:none;background:#182b25c7;border:1px solid #ffffff25;padding:10px 14px;border-radius:4px;max-width:65%}#visit-hint{margin:0;font-size:11px;line-height:1.6}
#visit-move-pad{position:absolute;right:18px;bottom:16px;display:flex;flex-direction:column;align-items:center;gap:4px}#visit-move-pad div{display:flex;gap:4px}#visit-move-pad button{border:1px solid #ffffff38;background:#182b25d9;border-radius:4px;width:36px;height:36px;font-size:17px;touch-action:none;user-select:none}
.visit-feedback{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:11px;color:#afbbad;margin:14px 2px 0;line-height:1.7}.visit-feedback button{border:0;background:transparent;font-size:10px;padding:8px;white-space:nowrap}.visit-feedback button[aria-pressed=true]{background:#d8d9b5;color:#18241d}
.book-portal .visit-feedback{display:none}
@media(max-width:700px){.visit-transport{padding:12px 10px;gap:7px;min-height:100px}.visit-transport button{font-size:11px;min-height:44px;padding:10px 12px}#visit-caption{left:10px;bottom:12px;max-width:calc(100% - 170px);padding:8px}#visit-move-pad{right:10px;bottom:12px}#visit-move-pad button{width:44px;height:44px}.visit-feedback{font-size:10px;align-items:start}.visit-feedback button{padding:5px}}

.island-feedback{font-size:12px;color:#d8d9b5}.island-feedback button{margin-left:1em;font:inherit}.island-feedback:has(button[hidden]){display:none}

.stage[data-loading] #book-photo-bridge{opacity:1;z-index:0}
.stage[data-loading] #book-photo{width:100%;height:100%;object-fit:cover;object-position:50% 46%}
.stage[data-loading] #loading{inset:0;z-index:8;padding:24px;background:linear-gradient(180deg,#14211d59,#10201bb8);backdrop-filter:blur(5px)}
.loading-card{width:min(420px,100%);padding:28px;border:1px solid #a6bda64d;border-radius:12px;background:#172820f5;box-shadow:0 18px 70px #08110d50}
.loading-card h2{font-size:20px;font-weight:500;margin:0 0 24px;letter-spacing:.02em}
.loading-status{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:36px;margin-bottom:10px}
#status{font-size:13px;line-height:1.6;margin:0;color:#e4e9db}
#load-value{font-size:26px;font-weight:500;font-variant-numeric:tabular-nums;color:#e0dfb4}
#load-progress{height:7px;border-radius:8px;background:#53635370;overflow:hidden}
#load-progress span{display:block;height:100%;width:var(--loaded,0%);background:linear-gradient(90deg,#9dbfa0,#e0dfb4);border-radius:inherit;transition:width .3s ease}
#load-progress[data-indeterminate=true] span{width:35%;animation:loading-travel 1.7s ease-in-out infinite}
.loading-meta{display:flex;justify-content:space-between;gap:12px;font-size:11px;line-height:1.6;color:#afbfac;margin-top:10px;font-variant-numeric:tabular-nums}
#load-note{font-size:12px;line-height:1.7;color:#afbfac;margin:20px 0 0}
#load-retry{border:1px solid #c7d0ac;background:#d8d9b5;color:#19271f;border-radius:5px;min-height:44px;padding:0 18px;margin-top:20px}
@keyframes loading-travel{0%{transform:translateX(-110%)}100%{transform:translateX(390%)}}
@media(max-width:500px){.stage[data-loading] #loading{padding:16px}.loading-card{padding:22px}.loading-card h2{font-size:18px;margin-bottom:18px}}
@media(prefers-reduced-motion:reduce){#load-progress span{transition:none}#load-progress[data-indeterminate=true] span{animation:none;transform:none;width:100%;opacity:.5}}
.stage[data-loading] .scene-caption,.stage[data-loading] #gesture{visibility:hidden}

#explore-tools{position:absolute;top:18px;right:20px;display:flex;gap:8px}
#explore-tools button,#explore-tools select{min-height:44px;border:1px solid #ffffff42;border-radius:5px;padding:0 12px;background:#23382ff2;color:#f7f2df;font:inherit;font-size:12px;cursor:pointer}
#explore-tools select:focus-visible{outline:2px solid #d5d4a6;outline-offset:3px}
#explore-tools button:active{background:#435b4d}
#explore-help{font-size:12px;color:#d5dfd1}
.touch-help{display:none}
@media(pointer:coarse){.mouse-help{display:none}.touch-help{display:inline}}
@media(max-width:700px){#explore-tools{top:12px;right:12px}#explore-tools button,#explore-tools select{padding:0 8px}}

#daylight-tools{display:flex;align-items:center;justify-content:center;gap:12px;padding:4px 16px;background:#25372f;color:#e1e0ce;border-bottom:1px solid #485548;font-size:12px}
#daylight-tools label{font-weight:600}#daylight-tools span{font-size:11px}#lamp-position{width:clamp(96px,22vw,240px);height:34px;margin:0;accent-color:#e8c68d;cursor:ew-resize}
#lamp-time{min-width:3.2em;font-variant-numeric:tabular-nums;color:#eee3c6}#world.moving-lamp{cursor:ew-resize}
.book-portal #daylight-tools{position:absolute;bottom:102px;left:12px;border-radius:4px}
@media(max-width:700px){#daylight-tools{gap:8px}#lamp-position{height:42px}.book-portal #daylight-tools{bottom:147px}}

#lamp-position{background:transparent}
#lamp-position::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:linear-gradient(90deg,#eab67a,#eae2c0 50%,#d28c72)}
#lamp-position::-webkit-slider-thumb{margin-top:-6px;width:16px;height:16px;background:#fff5db;border:2px solid #26392f;outline:1px solid #f1deb2}
#lamp-position::-moz-range-track{height:4px;border-radius:2px;background:linear-gradient(90deg,#eab67a,#eae2c0 50%,#d28c72)}

#harbor-controls{display:flex;gap:14px;align-items:center;padding:14px 22px;min-height:78px}
#harbor-hint{margin:0 auto 0 0;font-size:13px;color:#d4dccf;line-height:1.65}
#harbor-controls button{min-height:44px;padding:8px 14px;border-radius:4px;font-size:12px;white-space:nowrap}
#harbor-action{background:#ece2c7;color:#233531;border:1px solid #ece2c7}
#harbor-exit{background:transparent;border:1px solid #647568}
#harbor-ending{position:absolute;bottom:7%;left:5%;margin:0;color:#fff8e7;text-shadow:0 1px 5px #152e2b,0 2px 18px #102725;font:400 clamp(20px,2.5vw,34px)/1.6 "Songti SC","Noto Serif CJK SC",serif;pointer-events:none;animation:shore-words 1.1s ease-out both}
@keyframes shore-words{from{opacity:0}to{opacity:1}}
#stage[data-harbor=note] canvas{cursor:pointer}
#stage[data-harbor=boat] canvas{cursor:grab}
#stage[data-harbor=boat] canvas:active{cursor:grabbing}
.book-portal #harbor-controls{position:absolute;bottom:8px;left:8px;right:8px;border-radius:5px;background:#16271eee}
.book-portal #harbor-ending{bottom:18%}
@media(max-width:700px){#harbor-controls{gap:7px;padding:10px}#harbor-hint{font-size:12px}#harbor-controls button{padding:8px 10px}}
@media(prefers-reduced-motion:reduce){#harbor-ending{animation:none}}

#enter-island-story{left:20px;right:auto;background:#f0e4c8;color:#283b33}
.scope-lens{position:absolute;inset:0;pointer-events:none;opacity:0;background:radial-gradient(circle closest-side at center,transparent 81%,rgba(26,31,27,.16) 89%,#192222 98%,#142020 100%)}
.scope-lens::after{content:"";position:absolute;inset:49.6% calc(50% - 8px);border-left:1px solid #f3ebd08c;border-right:1px solid #f3ebd08c}
#port-sound{border:1px solid #738176;background:transparent}
@media(max-width:700px){#enter-island-story{left:10px}#harbor-controls:has(#port-sound:not([hidden])){flex-wrap:wrap}#harbor-controls:has(#port-sound:not([hidden])) #harbor-hint{flex-basis:100%}}

.story-tour{display:flex;align-items:center;gap:16px;min-height:61px;padding:8px 18px;background:#203129;border-bottom:1px solid #46584c}
.tour-location{display:flex;align-items:baseline;gap:12px;flex:1;min-width:0;font-size:14px;color:#e5e6d8}
#tour-position{white-space:nowrap;color:#bdc7b7;font:12px/1.2 ui-monospace,monospace}
.story-tour button{min-height:42px;border-radius:5px;font:inherit;font-size:13px}
#tour-next{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:144px;padding:9px 15px;border:1px solid #e9dfbd;background:#eee4c9;color:#23372e;font-weight:600}
#tour-next svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.5;fill:none}
#tour-next[aria-disabled=true]{cursor:default;background:#cccfbb;border-color:#cccfbb}
#tour-exit{padding:6px 2px;color:#d7dfcf;background:transparent;border:0}
.guided-tour :is(#desk-transport,#daylight-tools,#explore-tools,#enter-bookroom,#enter-island-story,#harbor-action,#harbor-exit,#visit-transport,#gesture){display:none}
.book-portal .story-tour{display:none}
@media(max-width:700px){
  .story-tour{padding:6px 10px;gap:10px}
  .tour-location{flex-direction:column;gap:3px;font-size:13px}
  .story-tour button{min-height:44px}
  #tour-next{min-width:112px;padding:9px 10px;gap:7px}
  #tour-exit{font-size:12px}
}
.guided-tour #harbor-controls:has(#harbor-hint:empty):has(#port-sound[hidden]),main:has(.guided-tour) .inspection{display:none}
.guided-tour #stage[data-island-story]:not([data-island-story=""]) .scene-caption{display:none}

#scope-optics{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:13px;color:#f1e8d4}
#scope-power{width:clamp(96px,13vw,174px);height:44px;margin:0;background:transparent;cursor:ew-resize}
#scope-power::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:linear-gradient(to right,#dbbd84 var(--progress,20%),#526157 var(--progress,20%))}
#scope-power::-webkit-slider-thumb{width:16px;height:16px;margin-top:-6px;background:#eee2c6;border:2px solid #293a31;outline:1px solid #dcc79c}
#scope-power::-moz-range-track{height:4px;background:#526157}
#scope-power::-moz-range-progress{height:4px;background:#dbbd84}
#scope-reading{width:4.2ch;text-align:right;font-variant-numeric:tabular-nums;color:#e9c891}
@media(max-width:700px){
  #harbor-controls:has(#scope-optics:not([hidden])){flex-wrap:wrap}
  #harbor-controls:has(#scope-optics:not([hidden])) #harbor-hint{flex-basis:100%}
  #harbor-controls:has(#scope-optics:not([hidden])) #harbor-action{margin-left:auto}
  #scope-optics{order:-1;flex-basis:100%}
  #scope-power{flex:1;min-width:0}
}

#crossing-veil{position:absolute;inset:0;opacity:0;pointer-events:none}
#crossing-veil canvas{display:block;width:100%;height:100%}
#stage[data-crossing] #harbor-ending,.guided-tour:has(#stage[data-crossing]) #harbor-controls{visibility:hidden}

#walk-tools{display:flex;align-items:center;gap:12px;padding:12px 18px;flex-wrap:wrap}
#walk-tools button,#walk-tools select,#harbor-walk{font:inherit;font-size:12px;border:1px solid #667b6c;border-radius:4px;background:#283b32;color:#f1ebda;min-height:44px;padding:0 12px}
#walk-hint{flex:1;color:#c1cbbd;font-size:12px}
.guided-tour #harbor-walk,.book-portal :is(#harbor-walk,#walk-start),.experience:has(#stage[data-walk]) :is(#story-tour,#explore-tools,#enter-bookroom,#enter-island-story,#gesture,#desk-transport,#harbor-controls,#daylight-tools){display:none}
main:has(#stage[data-walk]) .inspection{display:none}
@media(max-width:700px){#explore-tools{max-width:calc(100% - 24px);flex-wrap:wrap;justify-content:flex-end}#walk-tools{gap:6px;padding:8px}#walk-hint{order:1;flex-basis:100%}.stage[data-browsing=true] .scene-caption{display:none}}

@media(pointer:fine){#stage[data-walk] #visit-move-pad{display:none}}
#room-veil{position:absolute;inset:0;background:#242922;opacity:0;pointer-events:none;z-index:4}
#walk-room-choice{max-width:100%}
#walk-room:not([hidden]){background:#c6d9bd;color:#23382b}