:root{color-scheme:dark;--bg:#020811;--ink:#eef5f8;--muted:#a9bfca;--accent:#d9be8f}
*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;background:var(--bg)}
body{overflow:hidden;color:var(--ink);font-family:Inter,Helvetica Neue,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
button{-webkit-tap-highlight-color:transparent;font:inherit}
button:focus-visible{outline:2px solid #9edee7;outline-offset:4px}
.hub{position:relative;width:100%;height:100dvh;min-height:0;overflow:hidden;isolation:isolate;background:radial-gradient(ellipse at 70% 40%,#101a28 0%,#020811 74%)}
.hub[data-world="consulting"]{--accent:#d9be8f}
.hub[data-world="mdi"]{--accent:#72d9e9}
.hub[data-world="risk"]{--accent:#a38ae8}
.hub[data-world="tools"]{--accent:#6cdfd7}
.hub[data-world="science"]{--accent:#e1b879}
.scene-deck{position:absolute;inset:0;overflow:hidden}
.world-frame{position:absolute;inset:0;display:block;width:100%;height:100%;border:0;background:transparent;opacity:0;transform:scale(1.017);pointer-events:none;transition:opacity .82s cubic-bezier(.24,.72,.34,1),transform 1.1s cubic-bezier(.22,.6,.3,1);will-change:opacity,transform}
.world-frame.is-active{opacity:1;transform:scale(1);pointer-events:auto}
.world-frame.is-leaving{opacity:0;pointer-events:none;transition-duration:.48s,.88s;transform:scale(.995)}
.loading-state{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:26px;color:rgba(220,238,244,.55);letter-spacing:.25em;font-size:9px;font-weight:700;pointer-events:none;transition:opacity .45s}
.loading-state.is-hidden{opacity:0}
.loading-line{display:block;height:1px;width:116px;background:linear-gradient(90deg,transparent,rgba(180,222,233,.67),transparent);animation:loading-breathe 1.6s ease-in-out infinite alternate}
@keyframes loading-breathe{from{opacity:.35;transform:scaleX(.65)}to{opacity:.9;transform:scaleX(1)}}
.world-selector{position:absolute;z-index:20;bottom:max(23px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);display:flex;align-items:stretch;justify-content:center;gap:0;width:min(530px,calc(100vw - 170px));height:49px;border:1px solid rgba(190,210,225,.11);background:linear-gradient(180deg,rgba(6,17,30,.58),rgba(3,11,21,.70));-webkit-backdrop-filter:blur(13px);backdrop-filter:blur(13px);border-radius:4px;box-shadow:0 10px 40px rgba(0,0,0,.10)}
.world-selector button{position:relative;flex:1;min-width:0;display:flex;align-items:center;justify-content:center;gap:6px;border:0;background:transparent;color:rgba(202,219,228,.52);cursor:pointer;letter-spacing:.12em;transition:color .25s,background .25s;padding:0 5px;white-space:nowrap}
.world-selector button:hover{color:rgba(239,250,252,.90);background:rgba(184,209,229,.035)}
.world-selector button[aria-current="true"]{color:var(--ink)}
.world-selector .number{font-size:8px;font-weight:650;opacity:.55}
.world-selector .name{font-size:9px;font-weight:720}
.world-selector .indicator{position:absolute;left:13%;right:13%;bottom:-1px;height:2px;background:var(--accent);transform:scaleX(0);opacity:0;box-shadow:0 0 12px var(--accent);transition:transform .4s,opacity .3s}
.world-selector button[aria-current="true"] .indicator{transform:scaleX(1);opacity:.93}
.hub-dialog{position:absolute;z-index:40;inset:0;display:grid;place-items:center;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .32s,visibility .32s}
.hub-dialog[data-open="true"]{opacity:1;visibility:visible;pointer-events:auto}
.dialog-curtain{position:absolute;inset:0;background:rgba(0,6,12,.80);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px)}
.dialog-card{position:relative;width:min(580px,calc(100vw - 40px));padding:30px clamp(26px,4vw,46px) 42px;border:1px solid rgba(127,194,205,.30);background:linear-gradient(135deg,rgba(11,29,42,.98),rgba(3,11,21,.98));box-shadow:0 30px 100px rgba(0,0,0,.55);border-radius:4px;transform:translateY(16px);transition:transform .34s}
.hub-dialog[data-open="true"] .dialog-card{transform:translateY(0)}
.dialog-kicker{display:flex;align-items:center;justify-content:space-between;gap:10px;color:#abc5d0;font-size:10px;letter-spacing:.2em;font-weight:700;margin-bottom:53px}
.dialog-close{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;border:1px solid rgba(154,210,219,.35);color:#eff8fa;background:transparent;font-size:24px;line-height:1;cursor:pointer}
.dialog-label{font-size:10px;color:var(--accent);letter-spacing:.19em;font-weight:700}
.dialog-card h2{margin:13px 0 17px;font-size:clamp(31px,4vw,48px);font-weight:700;line-height:1.08;letter-spacing:-.05em}
.dialog-description{max-width:450px;color:#adc5cf;line-height:1.65;font-size:15px}
.dialog-return{border:1px solid rgba(138,211,223,.38);border-radius:24px;padding:13px 19px;background:transparent;color:#ecfafb;margin-top:25px;cursor:pointer;font-size:10px;font-weight:720;letter-spacing:.1em}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:850px){.world-selector{width:min(510px,calc(100vw - 120px));bottom:23px}.world-selector .number{display:none}.world-selector .name{font-size:8.5px;letter-spacing:.085em}}
@media(max-width:740px){.hub{min-height:0}.world-selector{width:calc(100vw - 32px);height:44px;bottom:max(19px,env(safe-area-inset-bottom));border-radius:5px}.world-selector .name{font-size:8px;letter-spacing:.065em}.world-selector button{padding:0 2px}}
@media(max-width:390px){.world-selector .name{font-size:7.5px}}
@media(prefers-reduced-motion:reduce){.world-frame,.loading-state,.loading-line,.world-selector .indicator,.dialog-card,.hub-dialog{animation:none!important;transition-duration:.01ms!important}}

/* Release 1.1: never hide the navigator beyond the real visual viewport. */
@media(max-height:650px){
  .hub{height:100dvh;min-height:0}
  .world-selector{bottom:max(8px,env(safe-area-inset-bottom));height:36px}
  .world-selector .name{font-size:clamp(7px,1.15vw,8.6px)}
  .world-selector .number{display:none}
}
@media(max-height:460px){
  .world-selector{height:33px;max-width:480px;width:min(470px,calc(100vw - 26px));bottom:max(5px,env(safe-area-inset-bottom))}
}
@media(max-width:430px) and (max-height:610px){
  .world-selector{height:37px;bottom:max(6px,env(safe-area-inset-bottom));width:calc(100vw - 16px)}
  .world-selector .name{font-size:7.3px;letter-spacing:0}
}