:root{--bg:#0a0f2e;--surface:#131a48;--card:#1b2460;--a:#b8c7ff;--a2:#ffd98a;--text:#eef1ff;--muted:rgba(238,241,255,.66);--line:rgba(184,199,255,.35);--font:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;--head:Georgia,'Palatino Linotype',serif;--r:20px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
[hidden],.atc-hidden{display:none!important}
.atc-skip-link{position:absolute;left:-999px;z-index:100;padding:6px 10px;background:var(--a);color:var(--bg)}
.atc-skip-link:focus{left:8px;top:8px}
.atc-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
body{min-height:100dvh;display:flex;flex-direction:column;-webkit-tap-highlight-color:transparent;font-family:var(--font);color:var(--text);background:var(--bg)}
main{flex:1;display:flex;flex-direction:column}
.atc-wrap{max-width:700px;margin:0 auto;padding:0 16px;width:100%}
.atc-board{position:relative;width:100%;aspect-ratio:600/900;overflow:hidden}
#atc-game{display:block;width:100%;height:100%;touch-action:none}
.atc-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:10;padding:12px}
.atc-panel{width:100%;max-height:100%;overflow-y:auto;text-align:center}
.row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;justify-content:center}
.atc-btn{display:inline-block;font-family:inherit;cursor:pointer;text-decoration:none}
.atc-btn-big{width:100%}
.atc-scores{list-style:none;text-align:left}
.atc-scores li{display:flex;justify-content:space-between}
.atc-scores .name{flex:1}
.atc-toast{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);z-index:20;white-space:nowrap}
.atc-best-row{display:flex;justify-content:space-between}
dialog{margin:auto;max-width:400px;width:92%;max-height:92dvh;overflow-y:auto;padding:0}
dialog form{padding:22px;position:relative}
.atc-dlg-close{position:absolute;top:8px;right:14px;background:none;border:none;font-size:1.7rem;cursor:pointer;color:inherit}
dialog input[type=text]{width:100%;font-family:inherit;font-size:1rem}
.check{display:flex;align-items:flex-start;gap:8px;cursor:pointer}
.atc-perks{list-style:none}
.atc-prose table{width:100%;border-collapse:collapse}
.atc-cards{display:grid;grid-template-columns:1fr;gap:10px}
#atc-site-header{display:flex;flex-wrap:wrap;align-items:center}
.atc-main-nav{display:flex}
.hdr-reg{text-decoration:none;font-weight:700;text-align:center}
.atc-brand{text-decoration:none}
a{color:inherit}
.atc-main-nav a{text-decoration:none}
:root{--pad:0px}
.atc-prose{line-height:1.7}.atc-prose p,.atc-prose ul{margin-bottom:12px}
.atc-prose h1{margin-bottom:6px}
.atc-prose table{margin:12px 0}.atc-prose th,.atc-prose td{text-align:left}
.atc-cta{text-align:center;margin-top:22px}
.atc-hud-item strong{display:block}
.atc-mini-title{margin:10px 0 4px}
.err{min-height:1em;font-size:.78rem}
.check{margin:10px 0;font-size:.82rem}
.atc-toast{padding:7px 16px;font-size:.8rem}
.atc-perks li{position:relative;padding:5px 0 5px 22px}
.atc-perks li::before{position:absolute;left:0;top:5px}
.atc-card h3{margin-bottom:4px}.atc-card p{margin:0}
.atc-about p{margin-bottom:12px;line-height:1.7}
/* glass: dark translucent panels, glows, hud under board */
body{background:radial-gradient(80% 50% at 80% 0,var(--card),transparent 70%),radial-gradient(60% 40% at 0 90%,var(--surface),transparent 70%),var(--bg);background-attachment:fixed;font-size:14px}
#atc-site-header{padding:10px 16px;gap:8px;justify-content:space-between;backdrop-filter:blur(10px);background:rgba(255,255,255,.04);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.atc-brand{font-family:var(--head);font-size:1.05rem;font-weight:800;color:var(--text);letter-spacing:.05em;text-shadow:0 0 14px var(--a)}
.atc-brand::before{content:'';display:inline-block;width:10px;height:10px;margin-right:8px;border-radius:50%;background:var(--a);box-shadow:0 0 12px var(--a)}
.atc-main-nav{gap:4px}.atc-main-nav a{padding:6px 12px;font-size:.75rem;color:var(--muted);border-radius:999px}.atc-main-nav a:hover{color:var(--text);background:rgba(255,255,255,.1);box-shadow:0 0 14px var(--line)}
.hdr-reg{order:3;flex:1 0 100%;padding:7px;font-size:.76rem;color:var(--bg);background:linear-gradient(90deg,var(--a),var(--a2));border-radius:999px;box-shadow:0 0 20px var(--line)}
.atc-stage{width:100%;max-width:450px;margin:0 auto;padding:12px 12px 0;display:flex;flex-direction:column-reverse}
.atc-hud{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px}
.atc-hud-item{padding:8px 4px;text-align:center;color:var(--text);font-weight:800;font-size:1.05rem;background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:var(--r);backdrop-filter:blur(6px);box-shadow:0 0 18px rgba(0,0,0,.3)}
.atc-hud-label{display:block;font-size:.55rem;letter-spacing:.14em;text-transform:uppercase;color:var(--a);font-weight:600}
.atc-board{border-radius:calc(var(--r) + 6px);border:1px solid var(--a);box-shadow:0 0 0 1px rgba(255,255,255,.1),0 0 50px var(--line)}
.atc-overlay{background:rgba(5,5,20,.7);backdrop-filter:blur(6px)}
.atc-panel{padding:20px 16px;background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 0 40px rgba(0,0,0,.4)}
.atc-panel h1{font-family:var(--head);font-size:1.5rem;font-weight:800;color:var(--text);text-shadow:0 0 18px var(--a);margin:4px 0 8px;line-height:1.2}
.atc-panel h2{font-family:var(--head);font-size:1.1rem;color:var(--a);margin-bottom:6px}
.atc-kicker{font-size:.68rem;letter-spacing:.24em;text-transform:uppercase;color:var(--a2)}
.lead{font-size:.84rem;color:var(--muted);margin:8px 0 14px;line-height:1.55}
.atc-btn{padding:10px 20px;border:1px solid var(--a);color:var(--text);background:rgba(255,255,255,.05);font-size:.82rem;font-weight:700;border-radius:999px}
.atc-btn:hover{box-shadow:0 0 22px var(--a)}
.atc-btn-primary{background:linear-gradient(90deg,var(--a),var(--a2));color:var(--bg);border-color:transparent}
.atc-btn-big{padding:14px;font-size:.95rem}.atc-btn-chip{padding:5px 12px;font-size:.7rem;border-color:var(--line);color:var(--muted)}
.atc-best-row{padding:9px 14px;margin:12px 0 4px;background:rgba(255,255,255,.06);border-radius:999px;font-size:.84rem}
.atc-scores{font-size:.8rem}.atc-scores li{padding:4px 10px;border-radius:8px}.atc-scores li:nth-child(odd){background:rgba(255,255,255,.05)}.atc-scores .rank{color:var(--a);min-width:26px}
.atc-big-score{font-size:2.3rem;font-weight:800;color:var(--a);margin:8px 0;text-shadow:0 0 20px var(--a)}
.atc-record{color:var(--a2);min-height:1.2em}.atc-profile-text{font-size:.76rem;color:var(--muted);margin:10px 0 2px}
.atc-soft{margin:12px 0;padding:10px;background:rgba(255,255,255,.06);border:1px dashed var(--a);border-radius:var(--r);font-size:.8rem}
.atc-toast{background:var(--a);color:var(--bg);border-radius:999px}
dialog{background:rgba(20,20,40,.92);color:var(--text);border:1px solid var(--a);border-radius:calc(var(--r) + 6px);box-shadow:0 0 60px var(--line)}
dialog::backdrop{background:rgba(0,0,10,.7);backdrop-filter:blur(4px)}
dialog h2{font-family:var(--head);color:var(--text);font-size:1.15rem;margin:0 26px 12px 0;text-shadow:0 0 14px var(--a)}
.atc-perks li::before{content:'';top:.75em;width:8px;height:8px;border-radius:50%;background:var(--a);box-shadow:0 0 10px var(--a)}
dialog label{display:block;font-size:.78rem;margin-bottom:4px;color:var(--muted)}
dialog input[type=text]{padding:11px 16px;background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:999px;color:var(--text);margin-bottom:4px}
dialog input[type=text]:focus{outline:0;border-color:var(--a);box-shadow:0 0 16px var(--line)}
.err{color:#ff8a8a}.fine{font-size:.7rem;color:var(--muted);margin-top:12px;line-height:1.5}
.atc-prose{padding:22px 16px 50px}.atc-prose h1{font-family:var(--head);font-size:1.6rem;color:var(--text);text-shadow:0 0 18px var(--a)}
.atc-prose h2{font-family:var(--head);color:var(--a);font-size:1.05rem;margin:22px 0 6px}
.atc-prose p,.atc-prose ul{font-size:.92rem;color:var(--text)}.atc-prose a{color:var(--a2)}
.atc-prose table{font-size:.84rem;background:rgba(255,255,255,.05);border-radius:12px;overflow:hidden}.atc-prose th,.atc-prose td{padding:8px 12px;border-bottom:1px solid var(--line)}.atc-prose th{color:var(--a)}
.atc-prose kbd{padding:1px 8px;background:rgba(255,255,255,.1);border-radius:6px}
.meta{font-size:.74rem;color:var(--muted);margin-bottom:14px}
.atc-about{padding:24px 0}.atc-about h2{font-family:var(--head);color:var(--text);font-size:1.25rem;margin-bottom:10px;text-shadow:0 0 14px var(--a)}
.atc-about p{font-size:.88rem;color:var(--muted)}.atc-about a{color:var(--a2)}
.atc-card{padding:14px 16px;background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:var(--r);backdrop-filter:blur(6px)}
.atc-card h3{color:var(--a);font-size:.95rem}.atc-card p{font-size:.82rem;color:var(--muted)}
#atc-site-footer{padding:20px 16px;text-align:center;font-size:.7rem;color:var(--muted)}
@media (min-width:900px){.atc-page-game main{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,450px) 230px minmax(0,1fr);column-gap:20px;padding:14px;align-items:start}.atc-page-game .atc-stage{display:contents}.atc-page-game .atc-board{grid-column:2;grid-row:1}.atc-page-game .atc-hud{grid-column:3;grid-row:1;grid-template-columns:1fr;margin-top:0;position:sticky;top:70px}.atc-page-game .atc-about{grid-column:2/4;grid-row:2}}