:root{color-scheme:light;font-family:"PingFang TC","Noto Sans TC",sans-serif;color:#334b4e;background:#c0d8e1}*{box-sizing:border-box}body{margin:0;overflow:hidden}#world{position:fixed;inset:0;touch-action:none;outline:none}canvas{display:block;width:100%;height:100%}header{position:fixed;top:max(23px,env(safe-area-inset-top));left:max(26px,env(safe-area-inset-left));pointer-events:none;text-shadow:0 1px 12px #fff9}h1{font-family:"Songti TC","Noto Serif TC",serif;font-size:23px;font-weight:500;letter-spacing:.14em;margin:0}header p{font-size:12px;letter-spacing:.09em;margin:9px 0;opacity:.78}#rail{position:fixed;left:0;right:0;bottom:0;z-index:4;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:2px;padding:4px max(10px,env(safe-area-inset-left)) calc(4px + env(safe-area-inset-bottom));background:linear-gradient(to top,#f3f7eee6,#f3f7ee8f 58%,#f3f7ee00);backdrop-filter:blur(9px);-webkit-backdrop-filter:blur(9px)}.rail-sep{width:1px;height:20px;margin:0 7px;background:#33474a26}nav,.actions{display:flex;gap:1px;align-items:center;justify-content:center;flex-wrap:wrap}button{appearance:none;font:inherit;font-size:13px;color:#334b4e;border:1px solid #ffffff80;background:#f7faf0c9;backdrop-filter:blur(12px);padding:11px 16px;min-height:44px;border-radius:24px;cursor:pointer;touch-action:manipulation;box-shadow:0 2px 15px #233f4310}button[aria-pressed=true]{background:#e0ecdfed;border-color:#5c7b6955}#rail button{background:none;border:0;box-shadow:none;backdrop-filter:none;padding:8px 11px;min-height:38px;border-radius:13px;font-size:13px;color:#2c4144}#rail button:hover{background:#ffffff96}#rail button[aria-pressed=true]{background:#dfece0e0;box-shadow:inset 0 0 0 1px #5c7b6940}button:focus-visible{outline:3px solid #38635e;outline-offset:3px}button:disabled{opacity:.45;cursor:wait}button:hover{background:#fff}button[hidden],[hidden]{display:none!important}.hint{flex-basis:100%;text-align:center;margin:0 0 1px;color:#233d40;font-size:11px;text-shadow:0 1px 7px white;letter-spacing:.08em}#status{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);max-width:calc(100% - 40px);width:360px;padding:20px 24px;background:#f3f7eeed;border-radius:10px;font-size:14px;line-height:1.8;text-align:center}#help{position:fixed;right:20px;bottom:calc(104px + env(safe-area-inset-bottom));width:min(340px,calc(100vw - 40px));background:#f5f9f2f5;padding:18px 24px;border-radius:16px;line-height:1.8;font-size:14px}#joystick{display:none;position:fixed;left:24px;bottom:calc(112px + env(safe-area-inset-bottom));width:92px;height:92px;border-radius:50%;background:#f6faf52b;border:1px solid #ffffffe0;touch-action:none}#stick{position:absolute;width:36px;height:36px;top:27px;left:27px;background:#f7fbf3a3;border:1px solid #fff;border-radius:50%;pointer-events:none}@media(pointer:coarse){#joystick{display:block}}@media(max-width:560px){header{left:20px;top:max(20px,env(safe-area-inset-top))}h1{font-size:20px}button{font-size:12px;padding:10px 13px}#rail button{font-size:12px;padding:7px 8px;min-height:36px}.rail-sep{display:none}#joystick{left:19px;bottom:calc(120px + env(safe-area-inset-bottom));width:82px;height:82px}#stick{top:22px;left:22px}.hint{font-size:10px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

/* 只在開場與音樂真正開始時引導幾秒；不搬動鍵盤焦點。 */
#audio-button{position:relative}
#audio-button[data-audio-cue="true"]{outline:2px solid #3d7565;outline-offset:2px;animation:music-cue 1.6s ease-in-out infinite}
#audio-button[data-audio-cue="true"]::after{content:attr(data-audio-hint);position:absolute;left:50%;bottom:calc(100% + 10px);transform:translateX(-50%);white-space:nowrap;background:#f5f9f2f5;color:#264b42;border:1px solid #6a978766;border-radius:9px;padding:7px 10px;font-size:12px;box-shadow:0 3px 14px #183d3320;pointer-events:none}
@keyframes music-cue{0%,100%{outline-color:#3d7565;box-shadow:0 0 0 0 #78ae8e22}50%{outline-color:#699f85;box-shadow:0 0 0 5px #78ae8e30}}
@media(prefers-reduced-motion:reduce){#audio-button[data-audio-cue="true"]{animation:none}}

/* The language link remains clickable within the scenery header. */
#language-switch{pointer-events:auto;display:inline-block;color:inherit;font-size:12px;text-underline-offset:3px;padding:4px 0;text-shadow:0 1px 12px #fff9}
html[lang="en"] h1{letter-spacing:.04em}
html[lang="en"] #help{max-height:calc(100dvh - 220px);overflow:auto}