*{box-sizing:border-box}body{margin:0;overflow:hidden;background:#b6c6ca;color:#22322e;font:14px/1.55 "Segoe UI","Microsoft YaHei",sans-serif}canvas{display:block}header{position:absolute;top:25px;left:30px;pointer-events:none;text-shadow:0 1px 12px #ffffffc0}.eyebrow{font-size:10px;letter-spacing:.19em;color:#4c625d}h1{font-size:23px;font-weight:600;margin:5px 0 3px;letter-spacing:.06em}h1 small{font-size:12px;vertical-align:top;letter-spacing:0;color:#55675e}header p{margin:0;color:#53695f;font-size:12px}aside{position:absolute;top:26px;right:28px;text-align:right}button,select{font:inherit;color:inherit;border:1px solid #d0d7ce;background:#f9faf4ed;border-radius:4px;padding:9px 15px;cursor:pointer}button:hover{background:#fff}button.active{background:#243e34;color:white;border-color:#243e34}#settings{width:235px;margin-top:9px;background:#f8faf3f5;padding:20px;text-align:left;border:1px solid #d0d7ce;border-radius:5px;box-shadow:0 8px 25px #15322319}#settings label{display:block;margin-bottom:13px}#settings select{max-width:150px;padding:3px 5px}#settings p{font-size:11px;color:#67756c}#settings a{display:block;margin-top:8px}a{color:#315d47;text-decoration:none}a:hover{text-decoration:underline}footer{position:absolute;bottom:19px;left:50%;transform:translateX(-50%);max-width:96vw}nav{display:flex;gap:4px;padding:5px;background:#f7faf1dc;backdrop-filter:blur(12px);border:1px solid #c5d2c4;border-radius:7px;white-space:nowrap;box-shadow:0 3px 20px #233c2920}nav button{border:0;background:transparent;font-size:12px;padding:10px 15px}.caption{font-size:10px;color:#435b4e;display:flex;gap:22px;justify-content:center;margin-top:6px;text-shadow:0 1px 7px #fff}#loading{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:#f8faf3ed;padding:24px 36px;border:1px solid #cbd7c7;border-radius:6px;text-align:center}#loading span{display:block;color:#617465;font-size:12px;margin-top:5px}#labels-layer{pointer-events:none;position:absolute;inset:0}.tag{position:absolute;white-space:nowrap;transform:translate(-50%,-100%);font-size:11px;background:#ffffffdf;padding:3px 8px;border:1px solid #c9d4c8;border-radius:3px}@media(max-width:650px){header{left:15px;top:15px}h1{font-size:17px}header p{display:none}aside{top:15px;right:15px}nav{overflow-x:auto;max-width:95vw}nav button{padding:8px 10px}.caption{gap:8px;font-size:9px}}
header{background:#f5f8ecda;padding:12px 17px;border-radius:5px;text-shadow:none}header .eyebrow{color:#627365}.caption{background:#f5f8ece0;border-radius:3px;padding:3px 10px}.tag[hidden],#loading[hidden],#settings[hidden]{display:none}
/* CAD controls are an overlay; the existing campus remains the primary view. */
[hidden]{display:none!important}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid #be7940;outline-offset:3px}aside{z-index:5}#twin-open{position:absolute;top:145px;left:30px;box-shadow:0 4px 16px #243e3420;font-size:12px;text-align:left}#twin-open span{display:block;font-size:9px;letter-spacing:.16em;color:#7b826f}#twin-panel{position:absolute;top:145px;left:30px;width:340px;max-height:calc(100vh - 245px);overflow:auto;background:#f9faf4f5;border:1px solid #cbd4c5;border-radius:6px;box-shadow:0 12px 35px #233a3030;padding:19px;z-index:4;scrollbar-width:thin;backdrop-filter:blur(14px)}.panel-heading{display:flex;align-items:start;justify-content:space-between}.panel-heading h2{font-size:18px;font-weight:600;margin:3px 0 10px}.panel-heading button{padding:0 9px;font-size:22px;background:transparent;border:0}.demo-note{font-size:10px;letter-spacing:.03em;color:#685c43;background:#eee8d9;padding:5px 8px;border-left:2px solid #ad8a51;margin:0 0 16px}.select-row{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11px;color:#667061;margin:12px 0}.select-row select{min-width:205px;padding:5px 7px;font-size:12px;background:#fff}.segmented{display:flex;border:1px solid #c5cec0;border-radius:4px;padding:3px;gap:3px}.segmented button{border:0;border-radius:2px;width:50%;padding:7px;font-size:12px}.segmented button:disabled{opacity:.55;cursor:progress}#cad-message{font-size:11px;color:#63715e;line-height:1.65;margin:9px 0 12px}.control-row{display:flex;justify-content:space-between;align-items:center;font-size:11px}.control-row button{font-size:10px;padding:4px 8px}.range-label{display:flex;justify-content:space-between;font-size:11px;margin-top:12px}.range-label output{color:#75806b;font-variant-numeric:tabular-nums}input[type=range]{width:100%;accent-color:#436a52;height:16px}input[type=checkbox]{accent-color:#436a52;vertical-align:middle}#cad-systems{display:grid;grid-template-columns:1fr 1fr;gap:3px 8px;margin:9px 0;font-size:10px}.component-card{font-size:10px;line-height:1.7;background:#eaf0e4;border:1px solid #dbe2d2;padding:8px 10px;border-radius:3px;overflow-wrap:anywhere}.component-card b{display:block;font-size:11px;font-weight:600}.drawing-links{display:flex;flex-wrap:wrap;gap:5px 14px;font-size:10px;margin:11px 0 17px}body.cad-isolated header p::after{content:' / 独立检视'}@media(max-width:700px){#twin-open{top:106px;left:15px}#twin-panel{top:106px;left:15px;width:min(330px,calc(100vw - 30px));max-height:calc(100dvh - 200px)}header{max-width:calc(100vw - 120px);padding:8px 10px}header .eyebrow{font-size:8px}#settings{max-height:65vh;overflow:auto}aside{right:15px}aside>button{font-size:11px;padding:7px}}

/* Page navigation stays interactive above the non-interactive title overlay. */
header{z-index:3}
.twin-entry{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:40px;padding:8px 14px;border:1px solid #243e34;border-radius:4px;background:#243e34;color:#fff;font-size:12px;font-weight:600;white-space:nowrap;text-shadow:none;pointer-events:auto}
.twin-entry:hover{background:#365949;border-color:#365949;text-decoration:none}
.twin-entry:active{background:#193026}
#return-twin{margin-top:10px}
#twin-open,#twin-panel{top:199px}
#twin-panel{max-height:calc(100dvh - 310px)}
.panel-twin-entry{display:flex;margin-top:12px}
#building-card{position:absolute;z-index:6;right:28px;bottom:110px;width:278px;padding:16px;background:#f9faf4f5;border:1px solid #b5c7b9;border-radius:6px;box-shadow:0 8px 30px #1c382429}
.building-card-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.building-card-heading h2{font-size:18px;line-height:1.4;margin:3px 0 0}
#building-dismiss{border:0;background:transparent;padding:0 5px;font-size:23px;line-height:1.2}
#picked-building-note{font-size:12px;color:#53695f;line-height:1.65;margin:12px 0}
#building-twin-link{display:flex}
#building-announcement{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
@media(max-width:700px){
 header{left:15px;top:15px;padding:0;max-width:calc(100vw - 125px)}
 header p{display:block;font-size:10px;max-width:210px}
 h1{font-size:17px;letter-spacing:0}
 .twin-entry{padding:8px 11px}
 #twin-open,#twin-panel{top:151px}
 #twin-panel{max-height:calc(100dvh - 240px)}
 #building-card{right:15px;bottom:110px;width:min(278px,calc(100vw - 30px));padding:14px}
}
@media(max-height:530px){#building-card{bottom:88px;padding:12px}.building-card-heading h2{font-size:15px}#picked-building-note{margin:6px 0}}