:root{--ink:#34383e;--muted:#85868a;--green:#8b5142;--line:#dbdde0;--paper:#f6f5f3;--copper:#a46650}*{box-sizing:border-box}body{margin:0;overflow:hidden;background:#efefed;color:var(--ink);font:14px 'Segoe UI','Microsoft YaHei',sans-serif;-webkit-font-smoothing:antialiased}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer;border:0}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--copper);outline-offset:5px}button:disabled{cursor:wait;opacity:.5}button{transition:background .2s,color .2s,transform .2s,box-shadow .2s}button:active{transform:scale(.96)}a{color:inherit;text-decoration:none}#stage{position:absolute;inset:0}#stage canvas{display:block;width:100%;height:100%;touch-action:none;outline:none}.topbar{position:absolute;z-index:3;top:0;left:36px;right:36px;height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;gap:13px;align-items:center;font-size:23px;font-weight:700;letter-spacing:1px}.brand-sub{display:block;font-size:8px;letter-spacing:2.6px;margin-top:1px;font-weight:600}.brand-mark{display:flex;gap:3px;height:32px;transform:skewY(-18deg)}.brand-mark i{width:6px;height:26px;background:var(--green)}.brand-mark i:nth-child(2){margin-top:3px;background:#828283}.brand-mark i:nth-child(3){margin-top:6px;background:#a9a9aa}.mode-switch{display:flex;padding:4px;background:#e5e5e6;border-radius:30px;gap:3px}.mode-switch button{border-radius:24px;padding:11px 22px;color:#838384;font-size:12px;white-space:nowrap}.mode-switch button.active{background:#fafafb;color:var(--green);box-shadow:0 2px 7px #3f3f400c}.mode-switch button:hover{color:var(--green)}.header-status{display:flex;align-items:center;font-size:11px;gap:8px;color:#727273;white-space:nowrap}.status-dot{width:6px;height:6px;background:#7e7e7f;border-radius:50%;box-shadow:0 0 0 4px #7e7e7f10}.version{margin-left:13px;padding-left:18px;border-left:1px solid var(--line);font-size:10px;letter-spacing:1px;color:#929293}.intro{position:absolute;top:147px;left:54px;width:280px;pointer-events:none}.eyebrow{font-size:9px;letter-spacing:2.1px;color:#878788;display:flex;align-items:center;gap:10px;font-weight:600}.short-line{height:1px;width:22px;background:#888889}h1{font-size:38px;line-height:1.45;font-weight:500;letter-spacing:-1.6px;margin:19px 0 13px}.accent{color:var(--copper)}.intro-copy{font-size:12px;line-height:1.9;color:#858586;letter-spacing:.6px}.building-facts{display:flex;gap:34px;margin-top:28px}.building-facts>div{display:flex;flex-direction:column;gap:5px}.building-facts strong{font-weight:400;font-size:35px;letter-spacing:-1px;line-height:1;font-family:'Segoe UI',sans-serif}.building-facts span{font-size:10px;letter-spacing:.6px;color:#909091}.tour-button{pointer-events:auto;display:flex;align-items:center;gap:13px;margin-top:26px;background:var(--green);color:#f5f5f6;padding:13px 16px;font-size:11px;border-radius:3px;box-shadow:0 5px 18px #54545520;width:218px;letter-spacing:1px}.tour-button:hover{background:#713f34;box-shadow:0 5px 20px #54545538}.play-icon{font-size:9px}.button-arrow{margin-left:auto;font-size:16px}.tour-progress{height:2px;width:218px;overflow:hidden}.tour-progress i{display:block;background:var(--copper);height:100%;width:0}.context-card{position:absolute;left:54px;bottom:157px;width:260px;padding:19px 21px;background:#fafafbcb;border:1px solid #dadadb;border-radius:5px;backdrop-filter:blur(18px);box-shadow:0 5px 25px #47474804}.context-top{display:flex;align-items:center;justify-content:space-between;color:#919192;font-size:8px;letter-spacing:1.6px}.tiny-dot{width:4px;height:4px;background:#8b8b8c;border-radius:50%}.context-card h2{font-size:20px;font-weight:500;margin:14px 0 7px}.context-card p{font-size:10px;line-height:1.7;color:#8e8e8f;margin:0}.context-meta{border-top:1px solid #e4e4e5;margin-top:15px;padding-top:12px;display:flex;justify-content:space-between;color:#7d7d7e;font-size:10px}.context-meta span:last-child{color:#a6a6a7}#space-toggle{background:none;border-top:1px solid #e4e4e5;width:100%;text-align:left;margin-top:12px;padding:12px 0 0;font-size:11px}#space-toggle span{float:right}#room-detail{border-top:1px solid #e4e4e5;margin-top:12px;padding-top:12px}#room-detail strong,#room-detail code,#room-area{display:block;font-size:10px;margin-top:6px}#room-detail code{font-size:9px;color:#868687;overflow-wrap:anywhere}.room-caption{color:var(--copper);font-size:9px}.floor-rail{position:absolute;right:36px;top:50%;transform:translateY(-50%);display:flex;align-items:center;flex-direction:column;padding:15px 8px 11px;background:#fafafbd9;border:1px solid #dededf;border-radius:40px;backdrop-filter:blur(14px);width:60px;box-shadow:0 5px 24px #4f4f5006}.rail-caption{font-size:7px;letter-spacing:1px;color:#9c9c9d;margin:2px 0 13px}.floor-button{width:40px;height:40px;display:flex;align-items:center;justify-content:center;gap:3px;border-radius:50%;background:transparent;font-size:12px;font-weight:500;position:relative}.floor-button small{font-size:8px;color:#a2a2a3}.floor-button.active{background:var(--green);color:#fbfbfc;box-shadow:0 3px 9px #4d4d4e22}.floor-button.active small{color:#e6e6e7}.floor-button:hover:not(.active){background:#ebebec}.floor-button[data-floor=all]{flex-direction:column;gap:0}.all-icon{font-size:17px;line-height:17px}.floor-button[data-floor=all] small{font-size:7px}.rail-line{height:1px;background:#e3e3e4;width:17px;margin:9px 0}.rail-bottom{font-size:7px;letter-spacing:2px;color:#b1b1b2;margin-top:10px}#floor-buttons{display:flex;flex-direction:column;gap:4px}.scene-caption{position:absolute;left:calc(50% - 110px);bottom:145px;display:flex;align-items:center;gap:16px;pointer-events:none}.scene-index{font-size:10px;color:#949495;letter-spacing:1px;border-right:1px solid #d2d2d3;padding-right:16px}.scene-caption strong{display:block;font-size:12px;font-weight:500;letter-spacing:2px}.scene-caption div>span{display:block;font-size:7px;color:#a2a2a3;letter-spacing:1.6px;margin-top:7px}.compass{position:absolute;right:47px;bottom:147px;display:flex;flex-direction:column;align-items:center;color:#838384}.compass>span{font-size:8px;letter-spacing:1px;margin-bottom:4px}.view-tools{position:absolute;bottom:75px;left:50%;transform:translateX(-50%);display:flex;gap:5px;padding:7px 10px;align-items:center;background:#fafafbe8;backdrop-filter:blur(16px);border:1px solid #dbdbdc;box-shadow:0 6px 24px #49494a08;border-radius:9px}.view-tools button{display:flex;align-items:center;justify-content:center;width:35px;height:35px;background:transparent;border-radius:5px;color:#7e7e7f}.view-tools button:hover{background:#eaeaeb;color:var(--green)}.view-tools button[aria-pressed=true]{background:#e3e3e4;color:var(--green)}.view-tools svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}.tool-divider{height:15px;width:1px;background:#e4e4e5;margin:0 5px}footer{position:absolute;bottom:0;left:36px;right:36px;height:48px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:9px;color:#959596;gap:15px}.footer-title{letter-spacing:1.7px;font-size:8px}.gesture-help{color:#a9a9aa;font-size:9px}.gesture-help b{font-weight:400;margin:0 10px}#about{font-size:10px;color:#878788;background:none}#about span{margin-left:16px}#loader{position:absolute;inset:0;background:#efefed;z-index:20;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;transition:opacity .65s,visibility .65s}#loader.loaded{opacity:0;visibility:hidden;pointer-events:none}#load-label{font-size:12px;letter-spacing:3px;color:#787879}#loader small{font-size:8px;letter-spacing:2.7px;color:#aaaaab}.loader-symbol{display:flex;gap:5px;transform:skewY(-18deg);height:49px}.loader-symbol i{width:10px;background:#9b6451;animation:breathe 1.2s ease-in-out infinite}.loader-symbol i:nth-child(2){animation-delay:.15s;background:#ac9288}.loader-symbol i:nth-child(3){animation-delay:.3s;background:#c1b8b2}@keyframes breathe{50%{opacity:.4;transform:translateY(-7px)}}.load-track{width:180px;height:2px;background:#ddddde}.load-track i{height:100%;width:3%;background:#787879;display:block;transition:width .3s}#toast{position:absolute;left:50%;top:108px;transform:translate(-50%,-8px);background:#464647ef;backdrop-filter:blur(10px);color:#f5f5f6;font-size:11px;letter-spacing:.5px;padding:12px 22px;border-radius:30px;pointer-events:none;opacity:0;transition:.3s;z-index:5;max-width:90vw;text-align:center}#toast.visible{opacity:1;transform:translate(-50%,0)}dialog{border:1px solid #dadadb;border-radius:13px;background:#f9f9fa;color:var(--ink);padding:36px;max-width:490px;width:calc(100vw - 32px);box-shadow:0 24px 100px #37373830}dialog::backdrop{background:#4242433d;backdrop-filter:blur(6px)}dialog h2{font-size:24px;font-weight:500;margin:15px 0}dialog p{font-size:12px;color:#868687;line-height:1.9}dialog dl{margin:24px 0}dialog dt{font-size:11px;font-weight:600;margin:17px 0 6px}dialog dd{margin:0;font-size:11px;color:#929293;line-height:1.9}dialog dd a{display:inline-block;margin-right:16px;border-bottom:1px solid #d0d0d1}.close-dialog{position:absolute;right:17px;top:12px;font-size:25px;background:none;color:#929293}.dialog-confirm{background:var(--green);color:white;padding:12px 25px;border-radius:5px;font-size:11px}#space-dialog{max-height:80vh}#space-search{border:1px solid #dbdbdc;background:#f2f2f3;border-radius:4px;font:inherit;font-size:12px;padding:12px;width:100%;color:var(--green)}#space-list{display:grid;gap:7px;margin-top:16px;max-height:40vh;overflow:auto}.space-row{display:flex;justify-content:space-between;align-items:center;text-align:left;background:#efeff0;padding:13px;border-radius:4px;font-size:11px}.space-row:hover{background:#e5e5e6}.space-row small{display:block;font-size:8px;color:#969697;margin-top:5px}.space-row>span:last-child{font-size:10px;color:#8f8f90}.empty-space{font-size:12px;color:#8f8f90;text-align:center;padding:20px}.compact .intro-copy{display:none}
@media(min-width:1500px){.intro{top:18vh;left:5vw}.context-card{left:5vw;bottom:19vh}h1{font-size:46px}.intro{width:340px}.topbar{left:3vw;right:3vw}.floor-rail{right:3vw}.scene-caption{bottom:19vh}}
@media(max-height:800px) and (min-width:901px){.intro{top:120px}h1{font-size:30px;margin:12px 0}.intro-copy{font-size:11px}.building-facts{margin-top:17px}.building-facts strong{font-size:28px}.tour-button{margin-top:19px}.context-card{bottom:132px;padding:14px 18px}.context-card h2{margin:10px 0 6px;font-size:18px}.scene-caption{bottom:133px}}
@media(max-width:1000px){.header-status{display:none}.topbar{left:24px;right:24px}.intro{left:30px;width:230px}h1{font-size:31px}.context-card{left:30px;width:230px}.floor-rail{right:24px}.scene-caption{left:45%}.compass{right:35px}}
@media(max-width:700px){.topbar{height:116px;left:20px;right:20px;align-items:flex-start;padding-top:20px}.brand{font-size:18px;gap:10px}.brand-mark{height:25px;transform:skewY(-18deg) scale(.8);transform-origin:left center}.brand-sub{font-size:6px}.mode-switch{position:absolute;top:67px;left:0;right:0;justify-content:center;padding:3px;background:#e4e4e5a6}.mode-switch button{padding:9px 19px;flex:1;font-size:10px}.intro{left:24px;top:145px;width:210px}.eyebrow{font-size:7px;letter-spacing:1.7px}.short-line{width:16px}h1{font-size:27px;line-height:1.35;margin:15px 0;letter-spacing:-1px}.intro-copy,.building-facts{display:none}.tour-button{margin-top:15px;width:179px;font-size:9px;padding:10px 13px}.tour-progress{width:179px}.floor-rail{right:15px;width:48px;padding:12px 4px 8px;top:49%}.floor-button{width:34px;height:34px;font-size:10px}.rail-caption{font-size:6px;letter-spacing:.7px;margin-bottom:10px}#floor-buttons{gap:3px}.rail-bottom{font-size:6px}.context-card{left:23px;bottom:145px;width:202px;padding:13px 15px}.context-card h2{font-size:17px;margin:9px 0 6px}.context-top{font-size:7px}.context-card p{font-size:9px}.context-meta{font-size:8px;margin-top:9px;padding-top:9px}.scene-caption{display:none}.compass{right:24px;bottom:154px}.view-tools{bottom:70px;gap:2px;padding:5px 7px;border-radius:8px}.view-tools button{width:32px;height:32px}.tool-divider{margin:0 3px}.view-tools svg{width:16px;height:16px}footer{left:20px;right:20px;height:44px;font-size:8px}.gesture-help{display:none}#about{font-size:9px}.footer-title{font-size:7px}#toast{top:125px;width:max-content;font-size:10px}#room-detail code{font-size:8px}#room-detail{padding-top:8px;margin-top:8px}#room-detail strong,#room-area{font-size:9px}dialog{padding:29px 24px}.context-card.room-selected{max-height:235px;overflow:auto}}
@media(max-height:680px){.intro{top:130px}h1{font-size:24px}.context-card{bottom:125px}.view-tools{bottom:60px}.floor-rail{top:53%}.rail-caption,.rail-bottom{display:none}.floor-button{height:30px;width:30px}.floor-rail{width:44px}.compass{bottom:119px}.intro-copy{display:none}.building-facts{margin-top:10px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}