:root{
  --bg:#ffffff; --fg:#16181d; --muted:#8a8f98; --faint:#f6f6f5;
  --line:#ececec; --line2:#e2e2e0; --accent:#17a35b; --accent-soft:#eaf7ef;
  --gold:#c8a63a; --silver:#a7abb2; --bronze:#bd7d4f;
  --card:#ffffff; --shadow:0 1px 2px rgba(20,20,25,.04), 0 18px 44px -20px rgba(20,20,25,.14);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font-family:"Manrope", ui-sans-serif, system-ui, -apple-system, "PingFang SC", sans-serif;
  line-height:1.65; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
::selection{background:var(--accent-soft);color:var(--accent)}
a{color:inherit}

/* header */
.site-head{max-width:840px;margin:0 auto;padding:26px 24px 4px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.wordmark{display:inline-flex;align-items:center;gap:8px;font-family:"Press Start 2P",monospace;font-size:12px;letter-spacing:.5px;color:var(--fg);text-decoration:none;line-height:1}
.wordmark .dot{color:var(--accent)}
.pix-dino{vertical-align:middle;image-rendering:pixelated}
.ghost-btn{font-family:inherit;font-size:13px;font-weight:600;color:var(--muted);
  background:transparent;border:1px solid var(--line2);padding:7px 13px;cursor:pointer;border-radius:8px;transition:.15s}
.ghost-btn:hover{color:var(--fg);border-color:var(--fg)}

main{max-width:840px;margin:0 auto;padding:0 24px 32px}

/* hero */
.hero{text-align:center;padding-top:34px}
.kicker{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);background:var(--accent-soft);padding:5px 12px;border-radius:100px;margin-bottom:20px}
h1{font-size:clamp(34px,7vw,58px);font-weight:800;letter-spacing:-.03em;line-height:1.02;margin:0 0 16px}
.sub{max-width:520px;margin:0 auto 30px;color:var(--muted);font-size:17px;font-weight:500}
.sub strong{color:var(--fg);font-weight:700}

/* game screen — clean framed device */
.stage{position:relative;background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:10px;box-shadow:var(--shadow);overflow:hidden}
#game{display:block;width:100%;height:auto;aspect-ratio:800/220;border-radius:8px;image-rendering:pixelated;image-rendering:crisp-edges;cursor:pointer;touch-action:manipulation}

.controls{display:flex;gap:20px;align-items:center;justify-content:center;flex-wrap:wrap;margin:22px 0 8px}
.controls span{color:var(--muted);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:7px}
.touch-hint{display:none}
kbd{font-family:"Manrope",monospace;background:var(--faint);border:1px solid var(--line2);border-bottom-width:2px;
  border-radius:6px;padding:2px 8px;font-size:12px;font-weight:700;color:var(--fg);min-width:22px;text-align:center;display:inline-block}
.cta{font-family:inherit;font-size:15px;font-weight:700;background:var(--accent);color:#fff;border:none;
  padding:11px 22px;border-radius:10px;cursor:pointer;transition:.15s;box-shadow:0 1px 2px rgba(23,163,91,.25)}
.cta:hover{background:#128a4c;transform:translateY(-1px);box-shadow:0 6px 18px -6px rgba(23,163,91,.5)}
.cta:active{transform:translateY(0)}
.mini-stats{font-size:14px;color:var(--muted);margin-top:16px;font-weight:500}
.mini-stats b{color:var(--fg);font-weight:700;font-variant-numeric:tabular-nums}
.mini-stats .sep{margin:0 10px;opacity:.4}

/* leaderboard */
.board{margin:60px 0 8px}
.board-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:6px}
.board-head h2{font-size:22px;font-weight:800;letter-spacing:-.02em;margin:0}
.tabs{display:flex;gap:4px}
.tab{font-family:inherit;font-size:13px;font-weight:600;background:transparent;border:none;color:var(--muted);
  padding:6px 12px;border-radius:8px;cursor:pointer;transition:.15s}
.tab:hover{color:var(--fg)}
.tab.is-on{color:var(--fg);background:var(--faint)}
.ranks{list-style:none;margin:14px 0 0;padding:0;border-top:1px solid var(--line)}
.ranks li{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:14px;
  padding:14px 6px;font-size:16px;border-bottom:1px solid var(--line);transition:background .15s}
.ranks li:hover{background:var(--faint)}
.ranks .pos{font-weight:800;font-variant-numeric:tabular-nums;color:var(--muted);font-size:14px;text-align:center}
.ranks li.top1 .pos,.ranks li.top2 .pos,.ranks li.top3 .pos{color:#fff;border-radius:7px;width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;margin:0 auto}
.ranks li.top1 .pos{background:var(--gold)}
.ranks li.top2 .pos{background:var(--silver)}
.ranks li.top3 .pos{background:var(--bronze)}
.ranks .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.ranks .sc{font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.ranks li.me{background:var(--accent-soft)}
.ranks li.me .sc{color:var(--accent)}
.ranks .loading,.ranks .empty{grid-template-columns:1fr;color:var(--muted);text-align:center;padding:34px 6px;font-weight:500}

/* prose / SEO */
.prose{max-width:660px;margin:64px auto 0}
.prose h2{font-size:19px;font-weight:800;letter-spacing:-.02em;margin:40px 0 12px}
.prose h2:first-child{margin-top:0}
.prose p{color:#4c5057;font-size:16px;margin:0 0 14px}
.prose strong{color:var(--fg);font-weight:700}
.prose em{font-style:normal;color:var(--accent);font-weight:600}
.prose details{border-bottom:1px solid var(--line)}
.prose summary{cursor:pointer;font-weight:700;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;font-size:16px}
.prose summary::-webkit-details-marker{display:none}
.prose summary::after{content:"+";color:var(--muted);font-weight:600;font-size:20px;transition:.2s}
.prose details[open] summary::after{transform:rotate(45deg)}
.prose details p{margin:0 0 16px;color:#4c5057}

/* footer */
.site-foot{max-width:840px;margin:0 auto;padding:40px 24px 48px;text-align:center;margin-top:56px;border-top:1px solid var(--line)}
.site-foot p{margin:5px 0;font-size:14px;color:var(--muted);display:flex;align-items:center;justify-content:center;gap:7px;flex-wrap:wrap}
.site-foot strong{color:var(--fg);font-weight:700}
.site-foot .small{color:#b3b6bc;font-size:13px}

/* modal */
.modal-wrap{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:20px;
  background:rgba(22,24,29,.4);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:fade .2s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal-wrap[hidden]{display:none}
.modal{background:var(--card);border-radius:20px;box-shadow:0 24px 70px -20px rgba(0,0,0,.4);
  padding:30px 28px;width:100%;max-width:360px;text-align:center;animation:pop .22s cubic-bezier(.2,.9,.3,1.2)}
@keyframes pop{from{transform:scale(.94);opacity:0}to{transform:scale(1);opacity:1}}
.modal h3{font-size:22px;font-weight:800;letter-spacing:-.02em;margin:0 0 6px}
.final{font-size:15px;color:var(--muted);margin:0 0 4px;font-weight:500}
.final b{font-size:40px;font-weight:800;color:var(--fg);display:block;margin-top:4px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.rank-line{font-size:14px;color:var(--muted);min-height:20px;margin:8px 0 18px;font-weight:600}
.rank-line.hit{color:var(--accent)}
.modal label{display:block;text-align:left;font-size:13px;color:var(--muted);margin-bottom:7px;font-weight:600}
#nameInput{width:100%;font-family:inherit;font-size:16px;font-weight:600;padding:12px 14px;
  border:1px solid var(--line2);border-radius:12px;background:var(--bg);color:var(--fg)}
#nameInput:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.modal-btns{display:flex;gap:10px;margin-top:18px}
.modal-btns .ghost-btn{flex:0 0 auto;padding:12px 18px}
.modal-btns .cta{flex:1}
.modal-note{font-size:12px;color:#b3b6bc;margin:14px 0 0;font-weight:500}

.head-right{display:flex;align-items:center;gap:8px}
.best-badge{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;
  color:var(--gold);background:rgba(200,166,58,.12);border:1px solid rgba(200,166,58,.38);
  padding:5px 12px;border-radius:100px;margin-bottom:10px;animation:pop .3s cubic-bezier(.2,.9,.3,1.3)}
.best-badge[hidden]{display:none}
.as-name{font-size:13px;color:var(--muted);margin:2px 0 0;font-weight:500}
.as-name b{color:var(--fg);font-weight:700}

@media (max-width:640px){
  .site-head{padding-top:18px}
  #youBtn{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  main{padding-bottom:20px}
  .hero{padding-top:20px}
  .controls span:not(.touch-hint){display:none}
  .touch-hint{display:inline-flex}
  .board{margin-top:48px}
  .prose{margin-top:48px}
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0d0e11; --fg:#f0f1f3; --muted:#868b95; --faint:#17181c;
    --line:#212227; --line2:#2b2c32; --accent:#2fce77; --accent-soft:#132a1e;
    --card:#141518; --shadow:0 1px 2px rgba(0,0,0,.3), 0 20px 50px -22px rgba(0,0,0,.7);
  }
  .prose p,.prose details p{color:#a3a8b2}
  .cta{box-shadow:none}
  .cta:hover{background:#28b869}
}