*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Arial,sans-serif}body{background:#b3d8e6}.world{height:100svh;min-height:620px;position:relative;overflow:hidden;isolation:isolate;background:linear-gradient(#85c9ed 0%,#d9eff3 56%,#b1c9af 57%)}.sky{position:absolute;inset:0 0 40%}.sun{position:absolute;right:13%;top:12%;width:90px;height:90px;border-radius:50%;background:#fff6b9;box-shadow:0 0 90px #fff8bc}.cloud{position:absolute;width:200px;height:40px;background:#ffffff9e;border-radius:90px;filter:blur(8px)}.c1{left:12%;top:20%}.c2{right:30%;top:12%}.horizon{position:absolute;top:50%;width:100%;height:12%;background:linear-gradient(90deg,#7a9b88,#60876d,#7e9b83);clip-path:polygon(0 75%,10% 25%,20% 65%,33% 0,45% 70%,55% 30%,70% 80%,85% 5%,100% 70%,100% 100%,0 100%)}.ground{position:absolute;top:56%;bottom:0;width:100%;background:linear-gradient(#719f78,#416c56)}.road{position:absolute;bottom:-12%;left:36%;width:28%;height:62%;background:linear-gradient(90deg,#78868a,#a6b3b5 16%,#8c9da0 84%,#748487);clip-path:polygon(39% 0,61% 0,100% 100%,0 100%)}.path{position:absolute;top:59%;left:15%;width:70%;height:7%;background:#b5b3a6;clip-path:polygon(0 0,100% 0,82% 100%,18% 100%)}.campus{position:absolute;top:20%;left:7%;width:86%;height:48%;display:flex;align-items:end;justify-content:space-between;gap:5%;perspective:1000px}.building{width:29%;height:100%;position:relative;transition:filter .5s,transform .7s;transform-origin:bottom}.building.admin{--wall:#e1d7c5;--trim:#647c8b}.building.hacker{--wall:#b8c9d5;--trim:#3c566d}.building.team{--wall:#e1d2bb;--trim:#6a7e71}.tower{position:absolute;bottom:7%;width:100%;height:83%;border:6px solid var(--trim);background:repeating-linear-gradient(90deg,transparent 0 31%,#ffffff26 32% 33%),linear-gradient(110deg,#fff8,var(--wall) 35%,#8c9996);box-shadow:14px 12px 0 #314a5066,0 20px 35px #20352b55;border-radius:5px 5px 0 0}.roof{position:absolute;top:6%;left:-5%;width:110%;height:14%;background:linear-gradient(#6b777d,#344b59);clip-path:polygon(10% 0,90% 0,100% 100%,0 100%);z-index:2}.windows{position:absolute;top:15%;left:9%;right:9%;height:29%;display:grid;grid-template-columns:repeat(4,1fr);gap:8%}.windows i{background:linear-gradient(130deg,#8fc9d8,#2d596e);border:5px solid #f1f0e4;box-shadow:inset 6px 0 #ffffff66}.office-title{position:absolute;top:53%;width:100%;text-align:center;color:#203b46;font-weight:900;font-size:clamp(10px,1.5vw,22px);letter-spacing:.04em}.entry{position:absolute;bottom:0;left:37%;width:26%;height:33%;background:#1d3643;border:6px solid #d6d3bf;display:flex;overflow:hidden;perspective:300px}.door{width:50%;height:100%;background:linear-gradient(90deg,#516b75,#9cb3b8);border:2px solid #314b58;transition:transform .8s}.building.open .door.left{transform:rotateY(-75deg);transform-origin:left}.building.open .door.right{transform:rotateY(75deg);transform-origin:right}.porch{position:absolute;bottom:0;left:28%;width:44%;height:10%;background:#b8b5a5;clip-path:polygon(20% 0,80% 0,100% 100%,0 100%)}.front-gate{position:absolute;bottom:16%;left:35%;width:30%;height:28%;z-index:9;pointer-events:none;transition:opacity .5s}.gate-post{position:absolute;bottom:0;width:8%;height:88%;background:linear-gradient(90deg,#b7b9b0,#f0ede2,#929f9e);border:2px solid #647577}.gate-post.l{left:0}.gate-post.r{right:0}.gate-sign{position:absolute;top:0;left:0;width:100%;background:#263f48;color:white;text-align:center;font-size:clamp(9px,1.25vw,17px);font-weight:bold;padding:12px 0;z-index:2;border:3px solid #e5d6ac}.gate-leaf{position:absolute;bottom:0;width:42%;height:70%;border:5px solid #d6dce0;background:repeating-linear-gradient(90deg,#466371 0 7%,#d3e0e3 8% 10%);transition:transform 1s}.gl{left:8%;transform-origin:left}.gr{right:8%;transform-origin:right}.front-gate.open .gl{transform:perspective(300px) rotateY(-82deg)}.front-gate.open .gr{transform:perspective(300px) rotateY(82deg)}.visitor{position:absolute;left:48%;bottom:5%;width:70px;height:180px;z-index:12;transform-origin:bottom;transition:left 2s ease-in-out,bottom 2s ease-in-out,transform 2s ease-in-out,opacity .7s}.visitor.walking .leg,.visitor.walking .arm{animation:stride .45s ease-in-out infinite alternate}.visitor.walking .l2,.visitor.walking .a1{animation-direction:alternate-reverse}@keyframes stride{to{transform:rotate(25deg)}}.shadow{position:absolute;bottom:-5px;left:4px;width:64px;height:14px;border-radius:50%;background:#182c3066}.hair{position:absolute;top:0;left:19px;width:35px;height:29px;border-radius:48% 48% 25% 25%;background:#242529;z-index:3}.face{position:absolute;top:11px;left:21px;width:31px;height:37px;background:#c38e6e;border-radius:38% 38% 45% 45%;z-index:4}.neck{position:absolute;top:43px;left:31px;width:13px;height:14px;background:#b17d61}.jacket{position:absolute;top:54px;left:13px;width:48px;height:68px;background:linear-gradient(90deg,#273e50 0 42%,#e6e9e8 43% 54%,#2c4658 55%);border-radius:12px 12px 4px 4px;z-index:3}.arm{position:absolute;top:59px;width:14px;height:65px;background:#2c4356;transform-origin:top}.a1{left:3px}.a2{right:0}.leg{position:absolute;top:116px;width:19px;height:54px;background:#29333e;transform-origin:top}.l1{left:17px}.l2{right:12px}.shoe{position:absolute;bottom:0;width:24px;height:12px;background:#1a242a;border-radius:4px}.s1{left:12px}.s2{right:8px}.speech{position:absolute;z-index:20;left:50%;top:7%;transform:translateX(-50%) translateY(-15px);width:min(470px,92vw);padding:18px;background:#ffffffed;border:2px solid #ffffff;border-radius:18px;text-align:center;box-shadow:0 20px 60px #1a3e5166;opacity:0;pointer-events:none;transition:.4s}.speech.visible{opacity:1;pointer-events:auto;transform:translateX(-50%)}.speech h2{margin:0;font-size:25px;color:#173d4b}.speech p{margin:8px 0 13px;color:#4a626b}.choices{display:flex;gap:8px}.choices button,.credential button[type=submit]{flex:1;border:0;border-radius:9px;background:#244d64;color:#fff;padding:13px 9px;font-weight:800;cursor:pointer}.choices button:hover,.credential button[type=submit]:hover{background:#176e83}.hint{position:absolute;bottom:15px;left:50%;transform:translateX(-50%);background:#0d303ec9;color:#fff;padding:10px 18px;border-radius:24px;text-align:center;z-index:21;font-size:14px;max-width:94vw}.credential{position:absolute;z-index:30;left:50%;bottom:22%;width:min(320px,90vw);transform:translate(-50%,12px);background:#f7faf8f7;border:2px solid #fff;border-radius:14px;padding:18px;box-shadow:0 18px 65px #092734a3;opacity:0;pointer-events:none;transition:.4s}.credential.show{opacity:1;pointer-events:auto;transform:translate(-50%,0)}.credential h2{margin:0 0 12px;font-size:20px;color:#234656}.credential label{display:block;font-size:13px;font-weight:700;margin:8px 0 4px;color:#294553}.credential input{display:block;width:100%;padding:12px;border:1px solid #a8b9c0;border-radius:7px;font-size:16px}.credential button[type=submit]{width:100%;margin-top:14px}.back{border:0;background:transparent;color:#245f7b;margin-top:10px;cursor:pointer}.building.selected{filter:drop-shadow(0 0 18px #f5fff5);transform:scale(1.06)}.error{position:absolute;z-index:35;top:2%;left:50%;transform:translateX(-50%);padding:12px 20px;border-radius:9px;background:#a41d2a;color:white;font-weight:bold}.restart{position:absolute;top:14px;right:15px;z-index:30;background:#ffffffd9;border:0;border-radius:12px;padding:10px;cursor:pointer}@media(max-width:700px){.campus{top:30%;height:32%;left:2%;width:96%;gap:2%}.building{width:32%}.tower{border-width:3px}.windows i{border-width:2px}.office-title{font-size:10px}.front-gate{width:48%;left:26%;bottom:19%;height:22%}.visitor{transform:scale(.75);transform-origin:bottom}.credential{width:min(290px,94vw);bottom:16%;}.speech{top:8%}.hint{font-size:12px}}@media(prefers-reduced-motion:reduce){.visitor.walking .leg,.visitor.walking .arm{animation:none}}/* Immersive staged campus: only the gate is visible before entry. */
.world{background:linear-gradient(180deg,#92c5df 0%,#e4e9e1 55%,#688f73 56%,#426b53 100%)}
.stage-gate .campus,.stage-gate .path,.stage-gate .speech,.stage-gate .road{visibility:hidden;opacity:0}.stage-gate .front-gate{left:18%;width:64%;height:51%;bottom:19%;filter:drop-shadow(0 18px 20px #122b2a66)}
.stage-gate .gate-sign{font-size:clamp(16px,2.3vw,31px);padding:19px}.stage-gate .gate-leaf{height:77%;background:repeating-linear-gradient(90deg,#304854 0 3%,#a4b9be 3.4% 4%,#344c57 4.4% 9%)}
.stage-roles .campus{opacity:0;visibility:hidden}.stage-roles .front-gate{opacity:0;visibility:hidden}.stage-campus .front-gate{opacity:0;visibility:hidden}
.campus,.front-gate,.road,.path{transition:opacity .7s,visibility .7s}.stage-campus .campus{opacity:1;visibility:visible}.stage-roles .speech{top:22%}
.people{position:absolute;left:50%;bottom:-19%;z-index:16;display:flex;align-items:end;gap:14px;transform-origin:bottom center;transition:left var(--travel,1900ms) ease-in-out,bottom var(--travel,1900ms) ease-in-out,transform var(--travel,1900ms) ease-in-out}.people .visitor{position:relative;left:auto!important;bottom:auto!important;transform:none!important;transition:none!important;flex:none}.people .visitor:nth-child(n+2){display:none}.people.trio .visitor:nth-child(n+2){display:block}.people.walking .leg,.people.walking .arm{animation:stride .42s ease-in-out infinite alternate}.people.walking .l2,.people.walking .a1{animation-direction:alternate-reverse}.people .visitor:nth-child(2){filter:hue-rotate(38deg)}.people .visitor:nth-child(3){filter:hue-rotate(105deg)}
.stage-campus .building:not(.selected){filter:brightness(.9)}.credential{bottom:9%;width:min(330px,88vw)}.credential.show{z-index:40}.restart{opacity:.7}.stage-gate .restart{opacity:0;pointer-events:none}
@media(max-width:700px){.stage-gate .front-gate{left:7%;width:86%;height:42%;bottom:23%}.people{gap:0}.people .visitor{width:64px}.stage-campus .credential{bottom:3%}}