:root{--header-height:84px;--ink:#eaf0e8;--muted:#aeb8b2;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden}body{background:#1c1e21;color:var(--ink);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer;border:0}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:2px solid #d5efad;outline-offset:4px}button:disabled{cursor:default}button svg{flex:none}button:focus:not(:focus-visible){outline:none}.header{height:var(--header-height);padding:0 clamp(20px,3vw,40px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #ffffff0d;background:#1c1e21}.brand{display:flex;align-items:center;gap:14px;font-size:25px;font-weight:650;line-height:1;letter-spacing:3px}.brand-sub{display:block;font-size:8px;letter-spacing:2px;font-weight:500;margin-top:9px}.brand-mark{width:38px;height:48px;display:grid;place-items:center;position:relative;transform:rotate(31deg)}.brand-mark i{position:absolute;border:1.4px solid #e1e9dc;border-radius:50%;width:37px;height:49px}.brand-mark i:nth-child(2){width:26px;height:37px}.brand-mark i:nth-child(3){width:15px;height:25px}.header-actions{display:flex;align-items:center;gap:24px}.about-btn{min-height:44px;background:none;color:#cbd3cb;font-size:12px;padding:0 5px}.about-btn span{margin-left:12px;font-size:18px}.language-toggle{min-height:44px;display:flex;align-items:center;gap:10px;background:none;font-size:12px;padding:0 3px;color:#849089}.language-toggle i{font-style:normal;color:#526057}.language-toggle .selected{font-weight:650;color:#f2f7ec}.workspace{height:calc(100dvh - var(--header-height));position:relative;overflow:hidden}.workspace:fullscreen{height:100dvh}.stage{position:absolute;inset:0;overflow:hidden}#viewport{position:absolute;inset:0}#viewport canvas{display:block;width:100%;height:100%;touch-action:none;outline:none}.stage-heading{position:absolute;left:24px;top:24px;z-index:2;pointer-events:none}.site-view{pointer-events:auto;display:flex;align-items:center;justify-content:center;gap:8px;min-height:42px;border:1px solid #ffffffaa;border-radius:13px;padding:9px 14px;font-size:12px;font-weight:500;line-height:1;background:#f3f8e9e8;color:#526348;box-shadow:0 4px 18px #0002}.view-icon{font-size:18px;font-weight:400;line-height:1}.site-view .view-icon{font-size:17px}.view-tools{position:absolute;z-index:3;bottom:64px;left:calc((100% - var(--panel-space))/2);transform:translateX(-50%);display:flex;align-items:center;gap:3px;max-width:calc(100% - 32px);padding:5px;border-radius:18px;border:1px solid #ffffffe0;background:linear-gradient(135deg,#fffffff0,#edf5dce0);box-shadow:0 10px 36px #0003;transition:left .32s ease}.view-tools button{display:flex;gap:6px;align-items:center;justify-content:center;min-height:42px;padding:0 12px;white-space:nowrap;border-radius:12px;font-size:12px;color:#6b795f;background:transparent}.view-tools button.active{background:#dce6cd;color:#3b5330}.view-tools button:hover{background:#e0e9d4}.view-tools button .view-icon{font-size:19px}.view-tools #fullscreen{width:42px;padding:0;font-size:22px}.tool-separator{height:20px;border-left:1px solid #a9b99a50;margin:0 3px}.stage-footer{position:absolute;left:26px;right:var(--panel-space);bottom:16px;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:12px;color:#a9b6ac;transition:right .32s ease}.stage-footer>span{display:flex;align-items:center;gap:9px;font-size:11px;line-height:1.5}.stage-footer svg{flex:none;opacity:.7}.stage-footer button{min-height:36px;white-space:nowrap;padding:4px 10px;background:none;font-size:11px;color:#c3cec0}.hotspot{position:absolute;top:0;left:0;z-index:1;pointer-events:none;display:flex;flex-direction:column;align-items:center;white-space:nowrap;font-size:11px;line-height:1.4;color:#516746;will-change:transform;opacity:0}.hotspot span{padding:7px 10px;background:#fffff0ec;border:1px solid #ffffffe0;border-radius:6px;box-shadow:0 4px 14px #0002}.hotspot:after{content:'';height:19px;width:1px;background:#9bb680}.hotspot:before{content:'';position:absolute;bottom:-3px;width:6px;height:6px;border:2px solid #e4efda;border-radius:50%;background:#72905b}#loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:12px;color:#dce8d5;font-size:13px}#loading span{width:18px;height:18px;border:1px solid #afc99a;border-top-color:transparent;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.webgl-error{position:absolute;top:40%;left:15%;right:15%;padding:24px;z-index:5;background:#f8fbed;color:#41523a;border-radius:16px;line-height:1.8}dialog{width:min(540px,calc(100% - 36px));max-height:88dvh;overflow:auto;padding:36px;border:1px solid #ffffff50;border-radius:24px;background:#f3f6ec;color:#2c4133;box-shadow:0 30px 100px #0006}dialog::backdrop{background:#0c1212aa;backdrop-filter:blur(8px)}dialog .eyebrow{font-size:10px;letter-spacing:1.6px;color:#85917a}dialog h2{font-size:25px;font-weight:500;margin:18px 0 20px}dialog p{font-size:13px;line-height:1.85;color:#6d7c64;margin:0 0 16px}.dialog-close{position:absolute;top:8px;right:10px;width:44px;height:44px;font-size:26px;background:none;color:#7d8b73}.dialog-status{margin-top:22px;padding:15px;border-radius:10px;background:#e3ebd8;font-size:12px;line-height:1.75}.reference-links{display:flex;gap:20px;padding:16px 0 0;border-top:1px solid #c6d2bb;font-size:12px;color:#587c44}.reference-links a:hover{text-decoration:underline}.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}
@media(max-width:700px){:root{--header-height:72px}.header{padding:0 20px}.brand{font-size:22px;gap:11px}.brand-mark{transform:rotate(31deg) scale(.82);width:30px}.brand-sub{font-size:7px;margin-top:7px}.header-actions{gap:18px}.about-btn{font-size:11px}.about-btn span{display:none}.language-toggle{font-size:11px;gap:8px}.stage-heading{left:16px;top:18px}.site-view{font-size:12px;min-height:42px;padding:10px 13px}.view-tools{left:50%;bottom:calc(58px + env(safe-area-inset-bottom));gap:2px;padding:4px;border-radius:17px}.view-tools button{padding:0 9px;min-height:44px;font-size:11px}.view-tools #fullscreen{width:44px}.stage-footer{left:16px;right:12px;bottom:calc(9px + env(safe-area-inset-bottom));justify-content:flex-end}.stage-footer>span{display:none}.stage-footer button{min-height:40px;font-size:11px}.hotspot{font-size:10px}dialog{padding:30px 24px}.reference-links{gap:14px;font-size:11px}}
@media(max-width:480px){.view-tools button .view-label{display:none}.view-tools button{width:47px;padding:0}.view-tools button .view-icon{font-size:22px}.view-tools .tool-separator{margin:0 2px}.site-view .view-label{display:inline}}
@media(max-height:500px){:root{--header-height:58px}.header{padding:0 20px}.brand{font-size:20px}.brand-mark{transform:rotate(31deg) scale(.7)}.brand-sub{font-size:6px}.stage-heading{top:14px;left:16px}.view-tools{bottom:14px}.stage-footer{display:none}.site-view{min-height:38px;font-size:11px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}