:root{--bg:#12151c;--surface:#1b2030;--line:#2c3450;--text:#f3f5fa;--muted:#a5aec0;--accent:#ff6a13;--on-accent:#0a0c10;--highlight:#f5c542;--good:#2ecc71;--bad:#ff5e5b;--radius:16px;--tap:48px;--font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color-scheme:dark}:root[data-theme=light]{color-scheme:light}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.45}body{min-height:100dvh;font-size:17px}a{color:inherit}h1,h2,h3{line-height:1.12;margin:0 0 .5em;letter-spacing:-.01em}h1{font-size:clamp(2rem,7vw,3.4rem);font-weight:800}h2{font-size:1.5rem;font-weight:750}h3{font-size:1.1rem;font-weight:700}p{margin:0 0 1em}:focus-visible{outline:3px solid var(--highlight);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.muted{color:var(--muted)}.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}.container{width:min(100%,560px)}.container,.wide{margin:0 auto;padding:16px}.wide{width:min(100%,980px)}.kicker{font-size:.72rem;letter-spacing:.22em;font-weight:800;color:var(--accent);text-transform:uppercase}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;min-height:var(--tap);padding:0 1.2em;border-radius:14px;border:2px solid transparent;font:inherit;font-weight:750;cursor:pointer;text-decoration:none;background:var(--accent);color:var(--on-accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.ghost{background:transparent;border-color:var(--line);color:var(--text)}.btn.good{background:var(--good);color:#04130a}.btn.bad{background:var(--bad);color:#1c0504}.btn.small{min-height:40px;padding:0 .9em;font-size:.9rem}.btn.block{width:100%}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px}.stack{display:grid;gap:12px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spread{justify-content:space-between}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:grid;gap:6px;font-size:.9rem;font-weight:650;color:var(--muted)}.court .stn:focus{outline:none}.court .stn:focus-visible circle.bg{stroke:var(--highlight);stroke-width:4px}.list li>.row{flex:1 1 220px}input,select,textarea{font:inherit;color:var(--text);background:var(--bg);border:2px solid var(--line);border-radius:12px;min-height:var(--tap);padding:0 12px;width:100%}textarea{padding:10px 12px;min-height:90px}input[type=color]{padding:4px;min-width:56px}input[type=checkbox]{width:22px;min-height:22px;accent-color:var(--accent)}.seg{display:flex;border:2px solid var(--line);border-radius:14px;overflow:hidden}.seg button{flex:1 1;min-height:44px;border:0;background:transparent;color:var(--text);font:inherit;font-weight:700;cursor:pointer}.seg button[aria-pressed=true]{background:var(--accent);color:var(--on-accent)}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{min-height:40px;padding:0 14px;border-radius:999px;border:2px solid var(--line);background:transparent;color:var(--text);font:inherit;font-weight:650;cursor:pointer}.chip[aria-pressed=true]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 22%,transparent)}.msg{padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:var(--surface)}.msg.err{border-color:var(--bad)}.msg.ok{border-color:var(--good)}.hero{padding:36px 0 20px}.hero .lead{font-size:1.15rem;color:var(--muted);max-width:36em}.features{display:grid;gap:14px;margin:28px 0}@media (min-width:720px){.features{grid-template-columns:repeat(3,1fr)}}.court-demo{max-width:420px;margin:8px auto 0}.shell{display:grid;grid-template-rows:auto 1fr auto;min-height:100dvh}.topbar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:5}.brand{font-weight:900;letter-spacing:.08em;color:var(--accent);text-decoration:none}.tabs{display:flex;position:sticky;bottom:0;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);z-index:5}.tabs a{flex:1 1;text-align:center;padding:10px 2px;font-size:.78rem;font-weight:700;text-decoration:none;color:var(--muted);min-height:56px;display:grid;place-items:center}.tabs a[aria-current=page]{color:var(--accent)}.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;border:1px solid var(--line);font-size:.8rem;font-weight:700}.dot{width:9px;height:9px;border-radius:50%;background:var(--muted)}.dot.on{background:var(--good)}.dot.off{background:var(--bad)}.dot.sync{background:var(--highlight);animation:pulse 1s infinite}@keyframes pulse{50%{opacity:.35}}.court{width:100%;height:auto;display:block;touch-action:manipulation;user-select:none;-webkit-user-select:none}.court .floor{fill:color-mix(in srgb,var(--accent) 12%,var(--surface))}.court .line{fill:none;stroke:var(--muted);stroke-width:.9;vector-effect:non-scaling-stroke;stroke-width:1.6px}.court .paint{fill:color-mix(in srgb,var(--accent) 10%,transparent)}.court .stn{cursor:pointer}.court .stn circle.bg{fill:var(--bg);stroke:var(--line);stroke-width:2.2px;vector-effect:non-scaling-stroke}.court .stn text{fill:var(--text);font-weight:800;text-anchor:middle;pointer-events:none}.court .stn .sub{fill:var(--muted);font-weight:650}.court .stn.off{opacity:.28}.court .stn.done circle.bg{stroke:var(--good);stroke-width:3.4px}.court .stn.sel circle.bg{fill:var(--accent);stroke:var(--highlight);stroke-width:3.4px}.court .stn.sel .sub,.court .stn.sel text{fill:var(--on-accent)}.court .ring{fill:none;stroke:var(--accent);stroke-width:3.4px;vector-effect:non-scaling-stroke;transform-origin:center;transform:rotate(-90deg);transform-box:fill-box}.court .stn.flash-made circle.bg{animation:fm .5s ease-out}.court .stn.flash-miss circle.bg{animation:fx .5s ease-out}@keyframes fm{0%{fill:var(--good)}to{fill:var(--bg)}}@keyframes fx{0%{fill:var(--bad)}to{fill:var(--bg)}}.counters{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;text-align:center}.counters b{display:block;font-size:1.6rem;font-weight:850;line-height:1.1}.counters span{font-size:.72rem;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.06em}.actions{position:sticky;bottom:0;background:linear-gradient(transparent,var(--bg) 24%);padding:14px 0 calc(8px + env(safe-area-inset-bottom));display:grid;gap:10px}.big{min-height:76px;font-size:1.35rem;border-radius:18px}.toast{left:50%;bottom:150px;transform:translateX(-50%);z-index:20;padding:10px 16px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-weight:700;box-shadow:0 6px 24px #0008}.sheet,.toast{position:fixed}.sheet{inset:0;z-index:30;background:#000a;display:grid;align-items:end}.sheet>div{background:var(--surface);border-radius:20px 20px 0 0;padding:16px;max-height:80dvh;overflow:auto;width:min(100%,560px);margin:0 auto}.list{display:grid;gap:8px;margin:0;padding:0;list-style:none}.list li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;background:var(--bg);border:1px solid var(--line);border-radius:12px}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);font-size:.95rem}th{color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em}.progress{height:8px;background:var(--line);border-radius:99px;overflow:hidden}.progress>i{display:block;height:100%;background:var(--accent)}@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}