:root{--bg:#040711;--ice:#7ee7ff;--ice-dim:rgba(126,231,255,.35);--gold:#ffd489;--ink:#eaf2ff;--ink-soft:#93a4c8;--glass:rgba(8,13,28,.62);--glass-border:rgba(126,231,255,.22);--display:"Space Grotesk", system-ui, sans-serif;--body:"Inter", system-ui, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden;background:var(--bg)}body{font-family:var(--body);color:var(--ink)}canvas{display:block}#panel,#timeline,#navbtns,#masthead,#hint,#callout-label{zoom:var(--ui-scale, 1)}#fade{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);opacity:1;pointer-events:none;z-index:60}#vignette{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:20;background:radial-gradient(ellipse at center,transparent 55%,rgba(2,4,10,.55) 100%)}#overlay{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none;z-index:25}#reticle-circle{fill:none;stroke:var(--ice);stroke-width:calc(1.2px * var(--ui-scale, 1));stroke-dasharray:6 10;opacity:.9}#reticle .tick{stroke:var(--ice);stroke-width:calc(1.4px * var(--ui-scale, 1))}#callout-line{fill:none;stroke:var(--ice);stroke-width:calc(1.2px * var(--ui-scale, 1));opacity:.9}#callout-dot{fill:var(--ice)}#callout-label{position:fixed;z-index:26;pointer-events:none;font-family:var(--display);font-size:17px;font-weight:600;letter-spacing:.06em;color:var(--ice);background:var(--glass);border:1px solid var(--glass-border);border-radius:4px;padding:7px 14px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 0 24px #7ee7ff26;white-space:nowrap;transition:opacity .3s ease}#callout-label .sub{display:block;font-family:var(--body);font-size:11px;font-weight:500;letter-spacing:.14em;color:var(--ink-soft);margin-top:2px;text-transform:uppercase}.hidden{opacity:0!important}#ptags{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:24}.ptag{position:absolute;transform:translate(-50%);font-family:var(--display);font-size:calc(13px * var(--ui-scale, 1));font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ice);text-shadow:0 0 8px rgba(4,7,17,.9);opacity:0;transition:opacity .5s ease;white-space:nowrap}.ptag.on{opacity:.85}#masthead{position:fixed;top:22px;left:28px;z-index:30}.mast-title{font-family:var(--display);font-weight:700;font-size:15px;letter-spacing:.42em;color:var(--ink)}.mast-sub{font-size:11px;letter-spacing:.18em;color:var(--ink-soft);margin-top:3px;text-transform:uppercase}#hint{position:fixed;top:24px;right:28px;z-index:30;font-size:12px;letter-spacing:.12em;color:var(--ink-soft);transition:opacity 1s ease}#hint.hide{opacity:0}#panel{position:fixed;left:28px;bottom:96px;z-index:30;width:min(470px,calc(100vw - 56px));background:var(--glass);border:1px solid var(--glass-border);border-left:2px solid var(--ice);border-radius:6px;padding:20px 24px 22px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 24px 60px #00000080;transition:opacity .3s ease,transform .3s ease}#panel.swap{opacity:0;transform:translateY(8px)}#step-eyebrow{font-family:var(--display);font-size:11px;font-weight:600;letter-spacing:.34em;color:var(--ice)}#step-presenter{display:inline-block;margin-top:10px;font-family:var(--display);font-size:11px;font-weight:700;letter-spacing:.22em;color:var(--gold);border:1px solid rgba(255,212,137,.45);border-radius:3px;padding:4px 10px;text-transform:uppercase}#step-presenter.hidden{display:none}#step-image{display:none;width:100%;max-height:160px;object-fit:cover;border-radius:5px;border:1px solid var(--glass-border);margin-top:12px}#step-title{font-family:var(--display);font-weight:600;font-size:36px;line-height:1.1;margin-top:10px;color:#fff}#step-text{margin-top:10px;font-size:17px;line-height:1.6;color:var(--ink);font-weight:400}#step-facts{margin-top:14px;list-style:none;display:none}#step-facts li{font-size:16px;line-height:1.5;color:var(--ink);padding:7px 0 7px 14px;border-left:1px solid var(--ice-dim);margin-left:2px}#step-facts li+li{border-top:1px solid rgba(126,231,255,.08)}#credits{position:fixed;left:50%;bottom:110px;transform:translate(-50%);z-index:30;pointer-events:none;font-family:var(--display);font-weight:700;font-size:58px;letter-spacing:.06em;white-space:nowrap;background:linear-gradient(90deg,#fff,#bfe9ff);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 24px rgba(126,231,255,.35));zoom:var(--ui-scale,1);transition:opacity 1.2s ease}#simhud{position:fixed;left:50%;bottom:88px;transform:translate(-50%);z-index:30;display:flex;align-items:center;gap:12px;padding:9px 10px 9px 20px;border-radius:999px;background:#080d1c8c;border:1px solid rgba(126,231,255,.16);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);zoom:var(--ui-scale,1);transition:opacity .4s ease}#simhud.hidden{pointer-events:none}#daycount{font-family:var(--display);font-size:16px;font-weight:600;letter-spacing:.12em;color:var(--gold);min-width:110px;text-align:center;font-variant-numeric:tabular-nums}#btn-speed{font-family:var(--display);font-size:14px;font-weight:700;color:var(--ice);background:#7ee7ff1a;border:1px solid var(--glass-border);border-radius:999px;padding:7px 16px;cursor:pointer;min-width:62px;transition:all .2s ease}#btn-speed:hover{border-color:var(--ice);box-shadow:0 0 14px #7ee7ff4d}#timeline{position:fixed;left:50%;bottom:26px;transform:translate(-50%);z-index:30;display:flex;gap:10px;align-items:center;padding:10px 18px;border-radius:999px;background:#080d1c8c;border:1px solid rgba(126,231,255,.12);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}#timeline button{width:26px;height:26px;border:0;padding:2px;cursor:pointer;background:none;opacity:.45;color:var(--ice);transition:all .3s ease}#timeline button svg{width:100%;height:100%;display:block}#timeline button:hover{opacity:1;transform:scale(1.2)}#timeline button.done{opacity:.75}#timeline button.now{opacity:1;transform:scale(1.45);filter:drop-shadow(0 0 7px rgba(126,231,255,.9))}#timeline button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}#navbtns{position:fixed;right:28px;bottom:24px;z-index:30;display:flex;gap:10px}.navbtn{font-family:var(--display);font-size:14px;font-weight:600;letter-spacing:.08em;color:var(--ink);background:var(--glass);border:1px solid var(--glass-border);border-radius:6px;padding:13px 22px;min-height:48px;cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all .2s ease}.navbtn:hover:not(:disabled){border-color:var(--ice);box-shadow:0 0 18px #7ee7ff40;transform:translateY(-1px)}.navbtn:disabled{opacity:.3;cursor:default}.navbtn:focus-visible{outline:2px solid var(--gold);outline-offset:3px}#audio-ctl{display:flex;align-items:center;gap:8px;margin-right:6px}#btn-audio{min-width:48px;padding:11px 12px;font-size:16px}#btn-audio.muted{opacity:.45}#vol{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:86px;height:4px;border-radius:2px;background:#7ee7ff40;cursor:pointer}#vol::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:13px;height:13px;border-radius:50%;background:var(--ice);box-shadow:0 0 8px #7ee7ffb3}#vol::-moz-range-thumb{width:13px;height:13px;border:0;border-radius:50%;background:var(--ice)}@media (max-width:760px){#masthead,#hint{display:none}#panel{left:14px;right:14px;bottom:118px;width:auto;padding:14px 16px 16px}#step-title{font-size:22px}#navbtns{right:14px;bottom:20px}.navbtn{padding:11px 16px}#timeline{bottom:74px;padding:8px 12px;gap:5px}#timeline button{width:10px}#timeline button.now{width:22px}}@media (prefers-reduced-motion:reduce){#panel,.navbtn,#timeline button{transition:none}}