:root{color-scheme:dark;--bg:#08090b;--ink:#edeee8;--yellow:#f3ef18;--red:#ff3d35;--channel-color:var(--yellow);--ease:cubic-bezier(.16,1,.3,1);font-family:Arial,"Noto Sans CJK SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink)}
*{box-sizing:border-box}html{min-height:100%;scroll-behavior:smooth}body{margin:0;min-height:100svh;display:flex;flex-direction:column;isolation:isolate;background:radial-gradient(ellipse at 24% 48%,#21201725,transparent 52%),var(--bg)}body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:repeating-linear-gradient(90deg,transparent 0,transparent calc(25vw - 1px),#ffffff03 25vw);mask-image:linear-gradient(transparent,#000 25%,#000 75%,transparent)}a{color:inherit;text-decoration:none}button{font:inherit;border:0;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:2px solid var(--yellow);outline-offset:8px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;margin:-1px;padding:0;border:0}.skip-link{position:fixed;z-index:100;left:24px;top:-80px;padding:15px 24px;background:var(--yellow);color:#08090b;font-size:14px}.skip-link:focus{top:20px}
.frame{position:fixed;inset:17px;pointer-events:none;z-index:5}.frame i{position:absolute;width:15px;height:15px;opacity:.4}.frame i:nth-child(1){left:0;top:0;border-left:1px solid var(--yellow);border-top:1px solid var(--yellow)}.frame i:nth-child(2){right:0;top:0;border-right:1px solid var(--yellow);border-top:1px solid var(--yellow)}.frame i:nth-child(3){left:0;bottom:0;border-left:1px solid var(--yellow);border-bottom:1px solid var(--yellow)}.frame i:nth-child(4){right:0;bottom:0;border-right:1px solid var(--red);border-bottom:1px solid var(--red)}
.masthead{display:flex;align-items:center;gap:32px;height:100px;flex:none;margin:0 5.3%;position:relative;z-index:4}.brand{display:flex;align-items:center;gap:14px;font-size:23px;line-height:1;font-weight:800;font-style:italic;letter-spacing:-1.4px}.brand svg{width:31px;height:27px;fill:var(--yellow)}.brand span{transform:skewX(-6deg)}.header-track{height:1px;flex:1;margin-left:30px;background:linear-gradient(90deg,#f3ef1840,transparent 38%,#f3ef180a);position:relative}.header-track i{position:absolute;left:0;top:-2px;width:27px;height:5px;clip-path:polygon(0 0,100% 0,calc(100% - 5px) 100%,0 100%);background:var(--yellow)}.motion-button{width:40px;height:40px;color:var(--yellow);background:#f3ef1808;display:grid;place-items:center;transition:background .3s,color .3s;border:1px solid #f3ef1830}.motion-button:hover{background:var(--yellow);color:var(--bg)}.motion-button svg{grid-area:1/1;width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7}.play-icon{display:none}body[data-motion="paused"] .play-icon,body[data-motion="reduced"] .play-icon{display:block}body[data-motion="paused"] .pause-icon,body[data-motion="reduced"] .pause-icon{display:none}
.stage{position:relative;display:grid;grid-template-columns:minmax(0,1.38fr) minmax(0,1fr);flex:1;align-items:center;min-height:520px;margin:0 6.8% 0 0;gap:3%;}.sculpture{position:relative;height:100%;min-height:520px;isolation:isolate;contain:layout paint;overflow:hidden}.scene-haze{position:absolute;inset:4% 0 0;background:radial-gradient(ellipse at 46% 56%,#ff3d350c,transparent 48%);pointer-events:none}#world{position:absolute;inset:0;z-index:1;touch-action:pan-y}#world canvas{display:block;width:100%;height:100%}.scene-foot{position:absolute;bottom:10%;left:20%;right:12%;display:flex;align-items:center;gap:5px;transform:skewX(-35deg);pointer-events:none;opacity:.42}.scene-foot span:nth-child(1){width:16%;height:2px;background:var(--yellow)}.scene-foot span:nth-child(2){height:1px;flex:1;background:linear-gradient(90deg,#f3ef1860,transparent)}.scene-foot span:nth-child(3){width:5%;height:2px;background:var(--red)}
.routes{position:relative;display:flex;flex-direction:column;gap:26px;width:100%;max-width:490px;justify-self:end;padding:30px 0;isolation:isolate}.routes::before{content:"";position:absolute;left:-33px;top:15%;bottom:15%;width:1px;background:linear-gradient(transparent,#f3ef181f,transparent)}.route-link{position:relative;display:flex;align-items:center;gap:25px;min-height:118px;padding:24px 27px;--cut:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,24px 100%,0 calc(100% - 24px));isolation:isolate;transition:color .4s var(--ease),transform .65s var(--ease)}.route-link::before{content:"";position:absolute;inset:0;z-index:-2;clip-path:var(--cut);background:linear-gradient(110deg,#d9dcba22,#b9c0a90c 60%,#e8ebc628);transition:background .45s}.route-link::after{content:"";position:absolute;inset:1px;z-index:-1;clip-path:var(--cut);background:linear-gradient(125deg,#141512ee,#0a0c0dee);transition:background .45s,opacity .45s}.route-title{font-size:clamp(26px,2.8vw,42px);font-weight:600;letter-spacing:.02em;transform:skewX(-6deg);transition:transform .65s var(--ease);white-space:nowrap}.route-icon{width:36px;height:36px;flex:none;color:#9ea78a;transition:color .4s,transform .65s var(--ease)}.route-icon svg{width:100%;height:100%;stroke:currentColor;stroke-width:1.3;fill:none}.route-arrow{width:29px;height:29px;stroke:var(--yellow);stroke-width:1.6;fill:none;margin-left:auto;flex:none;transition:stroke .4s,transform .65s var(--ease)}.route-link:hover,.route-link:focus-visible{color:var(--bg);transform:translateX(-9px)}.route-link:hover::before,.route-link:focus-visible::before{background:var(--yellow)}.route-link:hover::after,.route-link:focus-visible::after{opacity:0}.route-link:hover .route-icon,.route-link:focus-visible .route-icon{color:#272a13;transform:translateX(2px)}.route-link:hover .route-arrow,.route-link:focus-visible .route-arrow{stroke:var(--bg);transform:translate(3px,-3px)}.route-link:hover .route-title,.route-link:focus-visible .route-title{transform:skewX(-6deg) translateX(3px)}.route-link:focus-visible{outline-offset:5px}
.bottom-edge{height:56px;display:flex;align-items:center;gap:8px;margin:0 5.3%;pointer-events:none;flex:none}.edge-solid{height:8px;width:86px;background:var(--yellow);clip-path:polygon(0 0,100% 0,calc(100% - 8px) 100%,0 100%)}.edge-slashes{height:8px;width:43px;background:repeating-linear-gradient(125deg,var(--yellow) 0 2px,transparent 2px 7px);opacity:.6}.edge-line{height:1px;flex:1;background:linear-gradient(90deg,#f3ef1833,transparent 55%,#ff3d3526)}.edge-point{height:5px;width:22px;background:var(--red);box-shadow:0 0 12px #ff3d3533;clip-path:polygon(0 0,100% 0,100% 100%,5px 100%)}
.fallback-sculpture{position:absolute;width:55%;height:65%;left:25%;top:16%;transform:skewY(-10deg) rotate(-7deg);filter:drop-shadow(0 0 20px #f3ef1818)}.fallback-sculpture i{position:absolute;inset:0;clip-path:polygon(50% 0,100% 100%,0 100%,50% 0,50% 28%,22% 84%,78% 84%,50% 28%);background:linear-gradient(140deg,#ffff58,#5b5c0b 48%,#e6e31a 49%,#272b14 85%)}.fallback-sculpture i:nth-child(2){transform:translate(12px,18px);opacity:.25;z-index:-1}.fallback-sculpture i:nth-child(3){inset:35% 25% 11%;clip-path:polygon(50% 0,100% 100%,0 100%);background:radial-gradient(ellipse at 50% 75%,#ff3d3530,transparent 65%)}body.ready #world[data-scene-renderer="canvas2d"]+.fallback-sculpture{display:none}
@keyframes arrive{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}@keyframes illuminate{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}body[data-nav-entered="true"] .route-link{animation:arrive 1s var(--ease) backwards}body[data-nav-entered="true"] .route-link:nth-child(2){animation-delay:.09s}body[data-nav-entered="true"] .route-link:nth-child(3){animation-delay:.18s}body[data-nav-entered="true"] .sculpture{animation:illuminate 1.6s var(--ease) backwards}
@media(min-width:1600px){.stage{min-height:670px}.sculpture{min-height:670px}.routes{max-width:590px;gap:32px}.route-link{min-height:142px;padding-inline:36px}.route-title{font-size:46px}.route-icon{width:42px;height:42px}.masthead{height:120px}.bottom-edge{height:72px}}
@media(max-width:1050px) and (min-width:761px){.stage{grid-template-columns:1.15fr 1fr;margin-right:5%;gap:1%}.route-link{min-height:110px;padding:22px;gap:18px}.route-title{font-size:30px}.route-icon{width:29px;height:29px}.route-arrow{width:24px;height:24px}.routes{gap:20px}.sculpture{min-height:480px}.stage{min-height:480px}}
@media(max-width:760px){.frame{inset:10px}.frame i{width:10px;height:10px}.masthead{height:76px;margin:0 7%;gap:20px}.brand{font-size:21px;gap:11px}.brand svg{width:26px}.header-track{margin-left:5px}.motion-button{height:36px;width:36px}.stage{grid-template-columns:1fr;align-content:start;gap:0;min-height:0;margin:0}.sculpture{height:36svh;min-height:235px;max-height:345px;min-width:0;margin-top:-16px}.scene-foot{bottom:3%;left:17%;right:17%;opacity:.25}.routes{max-width:none;width:auto;justify-self:stretch;margin:0 7%;padding:4px 0 20px;gap:13px}.routes::before{display:none}.route-link{min-height:86px;padding:19px 24px;gap:24px;--cut:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px))}.route-title{font-size:28px}.route-icon{width:30px;height:30px}.route-arrow{width:23px;height:23px}.route-link:hover,.route-link:focus-visible{transform:translateX(-3px)}.bottom-edge{height:42px;margin:0 7%}.edge-solid{width:57px;height:6px}.edge-slashes{height:6px;width:28px}.fallback-sculpture{width:42%;height:76%;left:29%;top:6%}}
@media(max-width:380px){.route-link{padding-inline:20px;gap:18px}.route-title{font-size:26px}.sculpture{min-height:215px}.masthead{height:68px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

/* The prologue owns interaction until its full-white transition completes. */
body[data-nav-entered="false"] .route-link{opacity:0;transform:translateY(22px);pointer-events:none}body[data-nav-entered="false"] .sculpture{opacity:0}#nav-preview-tools{display:none!important}