*{box-sizing:border-box}html,body{margin:0;background:#000;color:#fff;font:400 15px/1.6 Barlow,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
#gl{position:fixed;inset:0;width:100vw;height:100vh;display:block;transition:opacity .6s}
#spacer{height:900vh}
.top{position:fixed;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:24px clamp(18px,4vw,56px);z-index:5}
.mark{font-size:12px;font-weight:600;letter-spacing:.42em;color:#fff;text-decoration:none}
.tb{font:500 11px Barlow;letter-spacing:.2em;color:#ccc;background:none;border:1px solid rgba(255,255,255,.35);border-radius:2px;padding:9px 12px;margin-left:8px;cursor:pointer;transition:all .25s}.tb:hover{color:#000;background:#fff}
.beat{position:fixed;left:clamp(18px,6vw,96px);bottom:clamp(60px,14vh,140px);max-width:min(620px,88vw);opacity:0;transform:translateY(14px);transition:opacity .7s,transform .7s;pointer-events:none;z-index:4}
.beat.on{opacity:1;transform:none;pointer-events:auto}
.k{font:400 11px 'JetBrains Mono',monospace;letter-spacing:.2em;color:#888;margin:0 0 14px}
h1{font-weight:500;text-transform:uppercase;letter-spacing:.08em;font-size:clamp(24px,3.4vw,42px);line-height:1.12;margin:0;text-shadow:0 2px 24px #000}
.s{color:#bbb;max-width:460px;margin:16px 0 0;font-size:15px;text-shadow:0 1px 12px #000}
.lbl{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:#888}
.mono{font-family:'JetBrains Mono',monospace;font-size:12px;color:#bbb}.mono b{color:#ffb36b;font-weight:400}.big{font-size:22px;color:#fff;font-weight:300;margin-bottom:6px}
.math{margin-top:22px;border-top:1px solid rgba(255,255,255,.14);padding-top:18px}
.eq{font:300 30px 'JetBrains Mono',monospace;letter-spacing:.04em;margin-bottom:4px}
.hud{display:flex;gap:22px;align-items:center;margin-top:16px}
.cities{display:flex;gap:18px;margin-top:14px;color:#9fc4ff;font-size:10px;letter-spacing:.2em}
.btn{font:500 12px/1 Barlow;letter-spacing:.2em;text-transform:uppercase;color:#fff;background:transparent;border:1px solid rgba(255,255,255,.7);border-radius:2px;padding:14px 20px;cursor:pointer;text-decoration:none;display:inline-block;transition:all .25s}
.btn:hover{background:#fff;color:#000}.btn.solid{background:#fff;color:#000}.btn.solid:hover{background:transparent;color:#fff}
.btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
.beat[data-b="6"] .end{opacity:0;transition:opacity 1s;margin-top:28px}.beat[data-b="6"].late .end{opacity:1}.beat[data-b="6"].late h1.a{opacity:.35}
#family{position:fixed;left:0;right:0;bottom:0;width:100%;height:42vh;opacity:0;transition:opacity .8s;z-index:3;pointer-events:none}#family.on{opacity:1}
#prog{position:fixed;left:0;right:0;bottom:0;height:2px;z-index:6}#prog i{display:block;height:100%;width:0;background:#fff;opacity:.5}
.hint{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);font-size:10px;letter-spacing:.3em;color:#777;z-index:4;transition:opacity .5s}
.beat[data-b="5"]{top:clamp(90px,16vh,160px);bottom:auto}
@media(max-width:700px){.beat{bottom:56px}.eq{font-size:24px}#family{height:34vh}}