:root{--bg:#0b1020;--panel:#131a30;--ink:#eef1fb;--muted:#9aa5c7;--line:#26304f;--visa:#3b6df0;--mastercard:#f2563d;--discover:#ff9b2f}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}.app{max-width:1200px;min-height:100vh;margin:0 auto;padding:32px 16px 48px}.hero h1{letter-spacing:-.02em;background:linear-gradient(90deg, var(--visa), var(--mastercard) 55%, var(--discover));color:#0000;-webkit-background-clip:text;background-clip:text;margin:4px 0 8px;font-size:clamp(2rem,5vw,3.4rem);line-height:1.05}.eyebrow{text-transform:uppercase;letter-spacing:.16em;color:var(--muted);margin:0;font-size:.75rem}.lede{color:var(--muted);max-width:60ch;margin:0 0 24px}.toggles{flex-wrap:wrap;gap:8px;margin-bottom:12px;display:flex}.toggle{border:1px solid var(--line);background:var(--panel);color:var(--ink);font:inherit;cursor:pointer;border-radius:999px;align-items:center;gap:8px;padding:8px 14px;display:inline-flex}.toggle[aria-pressed=false]{opacity:.45}.toggle .dot{background:currentColor;border-radius:50%;width:10px;height:10px}.toggle--visa .dot{background:var(--visa)}.toggle--mastercard .dot{background:var(--mastercard)}.toggle--discover .dot{background:var(--discover)}button:focus-visible,.scroller:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #fff}.scroll-wrap{border:1px solid var(--line);background:linear-gradient(180deg, #10172b, var(--bg));border-radius:16px;position:relative;overflow:hidden}.scroller{overflow-x:auto}.playhead{pointer-events:none;z-index:4;background:linear-gradient(#0000,#fff5 15% 85%,#0000);width:2px;position:absolute;top:36px;bottom:0}.scroller{scrollbar-width:thin;scrollbar-color:var(--line) transparent}.scroller::-webkit-scrollbar{height:8px}.scroller::-webkit-scrollbar-track{background:0 0;margin:0 16px}.scroller::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}.scroller::-webkit-scrollbar-thumb:hover{background:var(--muted)}.canvas{padding-bottom:12px;position:relative}.axis{z-index:3;border-bottom:1px solid var(--line);background:#10172bee;height:36px;position:sticky;top:0}.tick{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.78rem;position:absolute;top:8px;transform:translate(-50%)}.tick:after{content:"";background:var(--line);width:1px;height:8px;position:absolute;top:22px;left:50%}.lane{--c:var(--visa);position:relative}.lane--mastercard{--c:var(--mastercard)}.lane--discover{--c:var(--discover)}.lane-label{z-index:2;color:var(--c);background:color-mix(in srgb, var(--c) 18%, #10172b);border-radius:999px;margin:10px 0 0 16px;padding:3px 12px;font-size:.8rem;font-weight:700;display:inline-block;position:sticky;left:16px}.rail{background:linear-gradient(90deg, transparent, var(--c) 8%, var(--c) 92%, transparent);height:3px;box-shadow:0 0 16px var(--c);opacity:.6;position:absolute;top:58%;transform:translateY(-50%)}.rail--lit{opacity:1;z-index:0}.marker{border:3px solid var(--c);background:var(--bg);cursor:pointer;border-radius:50%;width:22px;height:22px;margin:-11px 0 0 -11px;padding:0;transition:box-shadow .15s;position:absolute;top:58%}.marker:before{content:"";position:absolute;inset:-12px}.marker:hover{box-shadow:0 0 0 6px color-mix(in srgb, var(--c) 30%, transparent)}.marker--passed{background:color-mix(in srgb, var(--c) 55%, var(--bg))}.marker--active{background:var(--c);box-shadow:0 0 0 7px color-mix(in srgb, var(--c) 35%, transparent), 0 0 24px var(--c)}.marker-year{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.72rem;position:absolute;top:28px;left:50%;transform:translate(-50%)}.marker--active .marker-year{color:var(--ink);font-weight:700}.empty{color:var(--muted);margin:0;padding:32px 16px}.detail{min-height:190px;margin-top:16px}.card{--c:var(--visa);background:var(--panel);border:1px solid var(--line);border-left:6px solid var(--c);border-radius:14px;padding:18px 20px}.card--mastercard{--c:var(--mastercard)}.card--discover{--c:var(--discover)}.card h2{margin:4px 0 8px;font-size:1.4rem}.card p{margin:0 0 10px;line-height:1.5}.card-meta{color:var(--muted);align-items:baseline;gap:12px;font-size:.85rem;display:flex}.card-year{color:var(--c);font-variant-numeric:tabular-nums;font-size:1.6rem;font-weight:800}.card a{color:var(--c)}@media (width<=600px){.app{padding:20px 12px 32px}.lede{font-size:.95rem}.toggle{flex:auto;justify-content:center;padding:10px 14px}.scroll-wrap{border-left:0;border-right:0;border-radius:12px;margin:0 -12px}.detail{min-height:0}.card{padding:14px 16px}.card h2{font-size:1.2rem}}@media (prefers-reduced-motion:reduce){*{transition:none!important}}