:root{color-scheme:dark;--ink:#d8dfdc;--dim:#77817f;--line:rgba(202,220,215,.26);font-family:Arial,Helvetica,sans-serif;background:#020607}
*{box-sizing:border-box}
html,body,#world{width:100%;height:100%;margin:0;overflow:hidden;background:#020607}
body{color:var(--ink);cursor:crosshair}
canvas{display:block;width:100%;height:100%;outline:none}
.grain{position:fixed;inset:-50%;pointer-events:none;opacity:.065;z-index:3;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");animation:grain .22s steps(2) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(3%,-2%)}50%{transform:translate(-2%,3%)}75%{transform:translate(2%,4%)}100%{transform:translate(-3%,-4%)}}
.gate{position:fixed;inset:0;z-index:10;display:grid;place-items:center;background:radial-gradient(circle at 50% 63%,rgba(29,47,49,.5),rgba(1,4,5,.97) 58%);transition:opacity 1.8s ease,visibility 1.8s}
.gate.is-gone{opacity:0;visibility:hidden;pointer-events:none}
.gate__inner{text-align:center;transform:translateY(-2vh)}
.eyebrow,.hint,.hud,.sound{font-size:11px;letter-spacing:.2em;text-transform:uppercase}
.eyebrow{color:#879391;margin:0 0 1.7rem}
h1{font-family:Georgia,'Times New Roman',serif;font-size:clamp(58px,10vw,142px);font-weight:400;letter-spacing:-.055em;line-height:.78;margin:0;text-shadow:0 0 50px rgba(160,195,188,.12)}
.gate button{margin-top:3rem;padding:14px 23px;border:1px solid rgba(207,224,219,.42);background:rgba(6,15,16,.55);color:#e3e9e7;letter-spacing:.22em;text-transform:uppercase;font-size:10px;cursor:pointer;transition:.3s}
.gate button:hover,.gate button:focus-visible{background:#c6d1ce;color:#0b1010;outline:none;box-shadow:0 0 35px rgba(180,208,201,.2)}
.hint{margin-top:18px;color:#596361;letter-spacing:.18em}
.hud{position:fixed;z-index:4;inset:0;pointer-events:none;color:#9ba7a4;text-shadow:0 1px 8px #000}
.bearing{position:absolute;top:28px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:12px}
.bearing span{font-family:Georgia,serif;font-size:12px;color:#ccd5d2}.bearing i{width:38px;height:1px;background:var(--line);position:relative}.bearing i:after{content:'';position:absolute;right:0;top:-2px;border-left:4px solid #94a39f;border-top:2px solid transparent;border-bottom:2px solid transparent}.bearing b{font-weight:400;letter-spacing:.16em;min-width:48px}
.controls{position:absolute;left:24px;bottom:22px;width:230px;padding:14px 15px 13px;border:1px solid rgba(190,215,209,.2);background:rgba(3,10,11,.58);backdrop-filter:blur(7px);letter-spacing:.11em;text-transform:uppercase}
.controls__title{margin:0 0 10px;color:#d0dad7;letter-spacing:.2em}.controls>div{display:grid;grid-template-columns:102px 1fr;align-items:center;gap:8px;margin-top:7px;color:#75817e;font-size:10px;letter-spacing:.08em;text-transform:none}.keys{display:flex;gap:3px}.keys kbd{display:grid;place-items:center;width:21px;height:20px;border:1px solid rgba(204,224,218,.3);border-bottom-color:rgba(204,224,218,.55);border-radius:2px;background:rgba(177,204,197,.07);font:10px Arial;color:#c2cfcb}.keys .shift{width:64px;font-size:9px;letter-spacing:.08em}.boost{grid-template-columns:45px 1fr 25px!important;margin-top:12px!important;padding-top:10px;border-top:1px solid rgba(190,215,209,.12);text-transform:uppercase!important}.boost i{height:3px;background:rgba(172,199,193,.14);overflow:hidden}.boost b{display:block;width:100%;height:100%;background:#a8c9c1;box-shadow:0 0 9px rgba(168,201,193,.65);transform-origin:left center}.boost strong{font-weight:400;text-align:right;color:#a9b9b5;font-size:9px}
#distance{position:absolute;right:28px;bottom:24px;margin:0}
.sound{position:fixed;right:27px;top:27px;z-index:5;border:0;background:none;color:#8f9a97;padding:5px;cursor:pointer}
.sound:before{content:'';display:inline-block;width:5px;height:5px;margin-right:8px;border-radius:50%;background:#9fb7b1;box-shadow:0 0 9px #9fb7b1}.sound[aria-pressed=true]:before{background:#3a4140;box-shadow:none}
.message{position:fixed;left:50%;top:25%;z-index:4;transform:translateX(-50%);font-family:Georgia,serif;font-size:clamp(14px,1.4vw,20px);letter-spacing:.13em;color:rgba(205,216,212,0);text-shadow:0 0 15px #000;transition:color 3s;text-align:center;pointer-events:none}.message.show{color:rgba(205,216,212,.55)}
@media(max-width:640px){.controls{left:12px;bottom:12px;width:210px;padding:10px}.controls>div:nth-of-type(2){display:none}#distance{right:14px;bottom:14px}.sound{right:14px;top:17px}.bearing{top:23px}}
@media(prefers-reduced-motion:reduce){.grain{animation:none}.gate{transition-duration:.2s}}