:root{--bg:#0b0d13;--panel:#141824;--panel-2:#1b2130;--ink:#f5f2e9;--muted:#aeb5c5;--line:#384155;--violet:#8b79ff;--cyan:#5fd8ff;--mint:#61e6b1;--orange:#ff8c5a;--yellow:#f3d86b;--danger:#ff6b7a;--shadow:0 24px 80px #0008}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 20% 0,#182039 0,transparent 32%),var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif}
button,select,input{font:inherit}
button{color:inherit}
a{color:inherit}
.shell{width:min(calc(100% - 24px),1240px);margin:auto;padding:18px 0 48px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);padding:10px 0;font:700 11px/1.3 "Courier New",monospace;text-transform:uppercase;letter-spacing:.08em}
.toplinks{display:flex;gap:8px;flex-wrap:wrap}.toplinks a{border:1px solid var(--ink);padding:7px 9px;text-decoration:none}.toplinks a:hover{background:var(--ink);color:var(--bg)}
.hero{display:grid;grid-template-columns:1.25fr .75fr;gap:34px;padding:46px 0 34px;border-bottom:2px solid var(--ink);align-items:end}
.eyebrow{margin:0 0 10px;font:700 11px/1.3 "Courier New",monospace;text-transform:uppercase;letter-spacing:.1em;color:var(--cyan)}
.hero h1{font-size:clamp(4rem,10vw,8.8rem);line-height:.76;letter-spacing:-.08em;text-transform:uppercase;margin:0}.hero h1 span{display:block;color:var(--violet);font-size:.35em;letter-spacing:-.045em;margin-top:.34em}
.hero-copy{border-left:2px solid var(--line);padding-left:24px}.hero-copy>p{color:var(--muted);font-size:1.06rem;line-height:1.6;margin:0}
.hero-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}
.button{border:2px solid var(--ink);background:transparent;padding:10px 13px;font-weight:900;text-transform:uppercase;font-size:.75rem;letter-spacing:.025em;cursor:pointer;transition:.18s ease}.button:hover:not(:disabled){transform:translateY(-2px);box-shadow:5px 5px 0 var(--violet)}.button:disabled{opacity:.45;cursor:not-allowed}.button.primary{background:var(--ink);color:var(--bg)}.button.ghost{background:transparent;color:var(--ink)}
.facts{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line);margin:24px 0 0}.facts>div{padding:14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#10141ec9}.facts span{display:block;color:var(--muted);font:700 10px "Courier New",monospace;text-transform:uppercase;margin-bottom:6px}.facts strong{font-size:.95rem}
.block{padding:58px 0;border-bottom:2px solid var(--line)}
.section-heading{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:end;margin-bottom:22px}.section-heading h2,.ai-note h2{font-size:clamp(2.5rem,6vw,5.2rem);line-height:.87;letter-spacing:-.06em;text-transform:uppercase;margin:0}.section-heading>p{color:var(--muted);line-height:1.55;margin:0}
.mode-tabs{display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--line);border-bottom:0}.mode-tab{display:flex;align-items:center;gap:11px;border:0;border-right:1px solid var(--line);background:var(--panel);padding:13px;text-align:left;cursor:pointer;color:var(--muted);font-weight:800}.mode-tab:last-child{border-right:0}.mode-tab span{display:grid;place-items:center;width:38px;height:38px;border:1px solid currentColor;font:900 13px "Courier New",monospace}.mode-tab.active{background:var(--violet);color:#0b0d13}.mode-tab:hover:not(.active){background:var(--panel-2);color:var(--ink)}
.simulator{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(280px,.7fr);border:2px solid var(--line);background:var(--panel);box-shadow:var(--shadow)}
.scene-column{min-width:0;border-right:2px solid var(--line)}.scene-toolbar{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line);font:700 10px "Courier New",monospace;text-transform:uppercase;color:var(--muted)}
.scene{position:relative;min-height:470px;overflow:hidden;background:#cbd4df;isolation:isolate}.scene>div{transition:opacity .35s ease,transform .45s ease}
.room{position:absolute;inset:0;background:linear-gradient(#b8c7d6 0 68%,#8e755f 68%);overflow:hidden}.room:after{content:"";position:absolute;left:0;right:0;top:67%;height:7px;background:#604b3e;box-shadow:0 18px 40px #0003}.window{position:absolute;left:7%;top:10%;width:34%;height:34%;border:12px solid #f1eadc;background:linear-gradient(155deg,#75cfea 0 58%,#8fcf89 59% 70%,#5d8a56 71%);box-shadow:0 8px 20px #0002}.window:after,.window:before{content:"";position:absolute;background:#f1eadc}.window:after{width:8px;height:100%;left:48%}.window:before{height:8px;width:100%;top:48%}.poster{position:absolute;right:9%;top:11%;padding:18px 24px;border:7px solid #e8dfcc;background:#293248;color:#e8dfcc;font:900 1.35rem/1 "Courier New",monospace;text-align:center;transform:rotate(2deg)}
.desk{position:absolute;left:20%;right:16%;bottom:11%;height:24%}.desk-top{height:38%;background:#765338;border-radius:5px;box-shadow:0 9px 0 #503622}.desk i,.desk b{position:absolute;top:34%;width:6%;height:68%;background:#403229}.desk i{left:8%}.desk b{right:8%}.plant{position:absolute;right:5%;bottom:29%;width:70px;height:100px}.plant span{position:absolute;left:18px;bottom:0;width:42px;height:45px;background:#be6e4c;clip-path:polygon(10% 0,90% 0,75% 100%,25% 100%)}.plant i,.plant b{position:absolute;left:30px;bottom:35px;width:23px;height:56px;background:#428d68;border-radius:100% 0 100% 0;transform:rotate(-35deg)}.plant b{left:39px;transform:rotate(35deg) scaleX(-1)}
.ar-layer{position:absolute;inset:0;display:grid;place-items:center;background:linear-gradient(transparent,#0c18351c);opacity:0;pointer-events:none}.layers-on.mode-ra .ar-layer{opacity:1}.holo-core{width:115px;height:115px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff,#5fd8ff 22%,#334bff 64%,#171944);box-shadow:0 0 20px #5fd8ff,0 0 70px #5fd8ff99;animation:pulse 2.8s ease-in-out infinite}.holo-orbit{position:absolute;width:245px;height:90px;border:2px solid #7ae5ff;border-radius:50%;box-shadow:0 0 18px #5fd8ff;transform:rotate(-16deg)}.orbit-two{transform:rotate(64deg);width:220px}.holo-label{position:absolute;background:#071222e8;border:1px solid var(--cyan);color:white;padding:7px 9px;font:700 10px "Courier New",monospace;opacity:0;transform:translateY(8px)}.labels-on .holo-label{opacity:1;transform:none}.label-a{left:22%;top:29%}.label-b{right:19%;top:38%}.label-c{left:48%;bottom:17%}
.vr-layer{position:absolute;inset:0;opacity:0;pointer-events:none;background:#070a18}.mode-rv .room{opacity:0}.mode-rv .vr-layer{opacity:1;pointer-events:auto}.vr-sky{position:absolute;inset:0;width:140%;left:-20%;transform:translateX(calc(var(--view,0) * -0.15%));background:linear-gradient(#111642 0 62%,#524063 63% 65%,#201b35 66%);transition:transform .25s ease}.star{position:absolute;width:4px;height:4px;border-radius:50%;background:#fff;box-shadow:0 0 8px #fff}.s1{left:9%;top:13%}.s2{left:31%;top:25%}.s3{left:57%;top:12%}.s4{left:75%;top:31%}.s5{left:92%;top:17%}.vr-planet{position:absolute;right:13%;top:8%;width:125px;height:125px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#ffdf95,#cc665d 47%,#652d58 72%);box-shadow:0 0 55px #d2617788}.vr-ridge{position:absolute;left:0;right:0;bottom:24%;height:28%;background:#433753;clip-path:polygon(0 76%,9% 42%,17% 68%,26% 23%,36% 71%,49% 39%,60% 68%,69% 17%,78% 67%,89% 32%,100% 72%,100% 100%,0 100%)}.ridge-front{bottom:0;height:38%;background:#282039;transform:scaleX(-1)}.vr-station{position:absolute;left:24%;bottom:25%;width:125px;height:72px;background:#c9d1df;border-radius:60px 60px 12px 12px;box-shadow:0 10px 30px #0008}.vr-station span{position:absolute;width:34px;height:34px;border-radius:50%;background:#67ddff;left:18px;top:21px}.vr-station i,.vr-station b{position:absolute;bottom:-28px;width:12px;height:30px;background:#8f99ab}.vr-station i{left:22px}.vr-station b{right:22px}.viewfinder{position:absolute;z-index:2;left:50%;bottom:18px;transform:translateX(-50%);display:flex;gap:22px;align-items:center;background:#060812d9;border:1px solid #ffffff5c;padding:9px 14px;font:700 10px "Courier New",monospace}.viewfinder strong{color:var(--cyan);font-size:13px}
.mr-layer{position:absolute;inset:0;opacity:0;pointer-events:none}.mode-rm .mr-layer{opacity:1;pointer-events:auto}.scan-grid{position:absolute;left:20%;right:16%;bottom:11%;height:24%;background:repeating-linear-gradient(0deg,#5fd8ff22 0 1px,transparent 1px 18px),repeating-linear-gradient(90deg,#5fd8ff22 0 1px,transparent 1px 18px);transform:perspective(450px) rotateX(60deg);transform-origin:bottom;opacity:.25}.scanned .scan-grid{opacity:1;box-shadow:0 0 35px #5fd8ff55}.surface-message{position:absolute;left:50%;top:13%;transform:translateX(-50%);background:#081321df;border:1px solid var(--cyan);padding:8px 11px;color:#fff;font:700 10px "Courier New",monospace}.anchor-ring{position:absolute;left:49%;bottom:25%;width:125px;height:42px;border:3px solid var(--cyan);border-radius:50%;transform:translateX(-50%);opacity:0;box-shadow:0 0 24px #5fd8ff}.digital-rover{position:absolute;left:49%;bottom:31%;width:105px;height:65px;transform:translate(-50%,30px) scale(.65);opacity:0;transition:.45s ease}.scanned .anchor-ring,.scanned .digital-rover{opacity:1}.scanned .digital-rover{transform:translate(-50%,0) scale(1)}.rover-body{position:absolute;left:10px;right:10px;top:9px;height:35px;background:linear-gradient(135deg,#f3d86b,#ff8c5a);border-radius:9px;box-shadow:0 0 22px #ffb65d99}.digital-rover i,.digital-rover b{position:absolute;bottom:0;width:26px;height:26px;border-radius:50%;background:#141824;border:5px solid #7e8da4}.digital-rover i{left:4px}.digital-rover b{right:4px}.digital-rover span{position:absolute;left:48px;top:-9px;width:9px;height:23px;background:#dce7f4}.digital-rover span:after{content:"";position:absolute;width:14px;height:9px;border-radius:50%;background:var(--cyan);left:-2px;top:-3px}.obstacle{position:absolute;right:24%;bottom:29%;width:42px;height:42px;border:2px solid var(--danger);background:#ff6b7a44;opacity:0}.scanned .obstacle{opacity:1}.interaction-wave{position:absolute;right:24%;bottom:29%;width:42px;height:42px;border:3px solid var(--mint);border-radius:50%;opacity:0}.interacting .digital-rover{left:66%}.interacting .interaction-wave{animation:wave 1.4s ease-out infinite}.interacting .obstacle{border-color:var(--mint);background:#61e6b133}
.scene-controls{display:flex;gap:9px;align-items:center;flex-wrap:wrap;padding:13px;border-top:1px solid var(--line);background:#0e111a}.range-control{margin-left:auto;display:flex;align-items:center;gap:10px;color:var(--muted);font:700 10px "Courier New",monospace;text-transform:uppercase}.range-control input{accent-color:var(--violet);width:170px}.hidden{display:none!important}
.mode-explainer{padding:24px}.mode-explainer h3{font-size:2rem;line-height:1.02;letter-spacing:-.04em;margin:8px 0 12px}.definition{color:var(--muted);line-height:1.55}.mode-explainer dl{margin:20px 0}.mode-explainer dl>div{border-top:1px solid var(--line);padding:11px 0}.mode-explainer dt{color:var(--cyan);font:700 10px "Courier New",monospace;text-transform:uppercase;margin-bottom:5px}.mode-explainer dd{margin:0;line-height:1.4}.teacher-question{border-left:7px solid var(--yellow);background:#20202b;padding:13px}.teacher-question span{display:block;color:var(--yellow);font:700 10px "Courier New",monospace;text-transform:uppercase;margin-bottom:7px}.teacher-question strong{line-height:1.42}
.challenge-block{background:linear-gradient(135deg,#111625,#171325);margin-inline:calc((100vw - min(100vw - 24px,1240px)) / -2);padding-inline:calc((100vw - min(100vw - 24px,1240px)) / 2)}.challenge-shell{max-width:900px;margin:auto}.challenge-progress{display:flex;justify-content:space-between;font:700 11px "Courier New",monospace;text-transform:uppercase}.challenge-progress strong{color:var(--mint)}.progress-track{height:7px;background:#2a3143;margin:10px 0 14px}.progress-track span{display:block;width:25%;height:100%;background:linear-gradient(90deg,var(--violet),var(--cyan));transition:width .3s ease}.question-card{border:2px solid var(--line);background:var(--panel);padding:25px;box-shadow:var(--shadow)}.case-label{color:var(--cyan);font:700 10px "Courier New",monospace;text-transform:uppercase}.question-card h3{font-size:clamp(1.5rem,3vw,2.5rem);line-height:1.18;letter-spacing:-.03em;margin:8px 0 22px}.answer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.answer{border:1px solid var(--line);background:#0e111a;padding:14px 8px;cursor:pointer;font-weight:900}.answer:hover:not(:disabled){border-color:var(--cyan)}.answer.correct{background:#14392d;border-color:var(--mint);color:var(--mint)}.answer.wrong{background:#3b1721;border-color:var(--danger);color:#ff9eaa}.feedback{min-height:58px;margin-top:16px;border-left:6px solid var(--line);background:#0d1018;padding:11px 13px;color:var(--muted);line-height:1.45}.feedback.success{border-left-color:var(--mint);color:#dfffee}.feedback.error{border-left-color:var(--danger);color:#ffe6e9}.next-button{display:block;margin:14px 0 0 auto}
.designer{display:grid;grid-template-columns:.7fr 1.3fr;border:2px solid var(--line);background:var(--panel)}.designer-form{display:flex;flex-direction:column;gap:17px;padding:22px;border-right:2px solid var(--line)}.designer-form label{display:grid;gap:7px;color:var(--cyan);font:700 10px "Courier New",monospace;text-transform:uppercase}.designer-form select{width:100%;border:1px solid var(--line);background:#0e111a;color:var(--ink);padding:11px;font-family:Arial,Helvetica,sans-serif;text-transform:none}.designer-form .button{margin-top:auto}.proposal{min-height:390px;padding:26px;display:grid;align-items:center;background:radial-gradient(circle at 80% 10%,#44348b55,transparent 38%)}.proposal-placeholder{text-align:center;color:var(--muted)}.proposal-placeholder span{display:inline-grid;place-items:center;width:100px;height:100px;border:2px solid var(--violet);border-radius:50%;color:var(--violet);font:900 2rem "Courier New",monospace;box-shadow:0 0 40px #8b79ff55}.proposal-top{display:flex;justify-content:space-between;align-items:center;gap:16px}.proposal-top>span{display:grid;place-items:center;width:58px;height:58px;background:var(--violet);color:#0b0d13;font:900 1rem "Courier New",monospace}.proposal-top small{color:var(--muted);font:700 10px "Courier New",monospace;text-transform:uppercase}.proposal-content h3{font-size:2rem;letter-spacing:-.04em;margin:18px 0 8px}.proposal-content>p{color:var(--muted);line-height:1.55}.proposal-grid{display:grid;grid-template-columns:repeat(3,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line);margin-top:20px}.proposal-grid>div{padding:12px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.proposal-grid span{display:block;color:var(--cyan);font:700 9px "Courier New",monospace;text-transform:uppercase;margin-bottom:7px}.proposal-grid strong{font-size:.9rem;line-height:1.4}
.ai-note{padding:55px 0}.ai-note>div:first-child{display:grid;grid-template-columns:.4fr 1.6fr;gap:24px;align-items:start}.ai-steps{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line);margin-top:25px}.ai-steps>div{padding:16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.ai-steps span{display:block;color:var(--violet);font:900 1.5rem "Courier New",monospace}.ai-steps strong{display:block;margin:8px 0}.ai-steps p{color:var(--muted);font-size:.9rem;line-height:1.45}.privacy-note{border-left:8px solid var(--mint);background:#11241e;padding:14px 16px;line-height:1.5;margin:18px 0 0}
footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:2px solid var(--ink);padding:17px 0;color:var(--muted);font:700 10px "Courier New",monospace;text-transform:uppercase}
:focus-visible{outline:4px solid var(--cyan);outline-offset:3px}
@keyframes pulse{50%{transform:scale(1.08);filter:brightness(1.15)}}@keyframes wave{to{transform:scale(3);opacity:0}}
@media(max-width:960px){.hero,.section-heading,.simulator,.designer{grid-template-columns:1fr}.hero-copy{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.facts{grid-template-columns:repeat(2,1fr)}.scene-column,.designer-form{border-right:0;border-bottom:2px solid var(--line)}.scene{min-height:430px}.mode-explainer{padding:20px}.ai-note>div:first-child{grid-template-columns:1fr}.ai-steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.shell{width:min(calc(100% - 16px),1240px)}.topbar{align-items:flex-start;flex-direction:column}.hero{padding-top:32px}.hero h1{font-size:4rem}.facts,.mode-tabs,.answer-grid,.proposal-grid,.ai-steps{grid-template-columns:1fr}.mode-tab{border-right:0;border-bottom:1px solid var(--line)}.mode-tab:last-child{border-bottom:0}.scene{min-height:390px}.scene-toolbar{align-items:flex-start;flex-direction:column}.scene-controls{align-items:stretch;flex-direction:column}.range-control{margin:0;justify-content:space-between}.range-control input{width:55%}.window{width:42%;height:29%}.poster{right:5%;font-size:1rem;padding:13px}.label-a{left:5%}.label-b{right:4%}.label-c{left:42%}.question-card{padding:18px}.proposal{padding:19px}.proposal-top{align-items:flex-start;flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}