:root{--ink: #16243a;--muted: #5b6b80;--panel: rgba(255, 255, 255, .9);--panel-border: rgba(255, 255, 255, .7);--accent: #ff7a1a;--accent-ink: #ffffff;--sea: #1478b8;--ok: #22a861;--bad: #e5484d;--shadow: 0 10px 30px rgba(10, 30, 60, .25);--radius: 16px;font-family:Segoe UI,system-ui,-apple-system,Microsoft JhengHei,PingFang TC,Noto Sans TC,sans-serif;color:var(--ink)}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:#cfe6f2}button{font:inherit;color:inherit;cursor:pointer}#scene{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block;touch-action:none;outline:none}body[data-lang=en] .zh,body[data-lang=zh] .en{display:none!important}body[data-lang=both] span.zh{margin-left:.35em}body[data-lang=both] p.zh{margin-top:-.3em;color:var(--muted)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:none;align-items:center;justify-content:center;padding:16px;background:#081c3473;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:50}.overlay.show{display:flex}#loading{background:linear-gradient(180deg,#3b82c4,#cfe6f2)}.loader-box{text-align:center;color:#fff;font-size:1.1rem;text-shadow:0 1px 4px rgba(0,0,0,.3)}.loader-box .zh{display:block;margin:.2em 0 0!important}.spinner{width:54px;height:54px;margin:0 auto 16px;border-radius:50%;border:5px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.intro-box,.map-box,.quiz-box{background:#fff;border-radius:22px;box-shadow:var(--shadow);max-height:calc(100vh - 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150px))}#card{max-height:46vh;bottom:8px;padding:14px 16px}#card.open~#joystick{display:none}#field-panel{left:8px;right:8px;bottom:8px;width:auto;max-height:40vh;padding:10px 12px 12px}#field-panel.show~#joystick{bottom:calc(40vh + 20px)}.intro-box{padding:22px 18px 18px}}