:root{
  color-scheme:dark;
  --page:#121621;
  --header:#3b425f;
  --road:#414a6c;
  --road-dark:#343c5a;
  --road-line:#aeb7dc;
  --panel:#3d445d;
  --panel-deep:#31374d;
  --panel-line:#58627f;
  --text:#f7f8ff;
  --muted:#b5b9c9;
  --green:#39c85b;
  --green-dark:#2cad49;
  --node:#59658f;
  --node-ring:#7581b6;
  --disabled:#555b70;
  --disabled-text:#878c9d;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--page);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text)}
body{min-height:100vh;overflow-x:hidden}
button,input{font:inherit}
button{-webkit-tap-highlight-color:transparent}
.hidden{display:none!important}
.game-shell{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(180deg,#3c4463 0,#3c4463 54%,#111522 54%,#111522 100%)}
.game-header{height:58px;flex:0 0 58px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;background:#3a405a;border-bottom:1px solid rgba(255,255,255,.08);box-shadow:0 5px 18px rgba(0,0,0,.12);z-index:5}
.logo{display:flex;align-items:center;font-size:24px;font-weight:1000;letter-spacing:-.6px;line-height:1;text-shadow:0 2px 2px rgba(0,0,0,.16)}
.logo-coin{display:inline-grid;place-items:center;color:#ffd33d;font-size:30px;line-height:.8;margin:0 1px;text-shadow:inset 0 0 0 2px #efb821,0 2px 0 #c99617}
.header-status{display:flex;align-items:center;gap:7px;padding:8px 12px;border-radius:8px;background:rgba(25,29,45,.26);font-size:12px;font-weight:800;color:#e9ebf4}
.status-dot{width:7px;height:7px;border-radius:50%;background:#44e26a;box-shadow:0 0 10px rgba(68,226,106,.55)}
.road-stage{position:relative;flex:1;min-height:400px;overflow:hidden;background:linear-gradient(180deg,#424b6d,#3e4767 68%,#353c58 100%);border-bottom:6px solid #262b40}
.road-stage:after{content:"";position:absolute;left:0;right:0;bottom:0;height:32px;background:linear-gradient(#303750,#252b40);border-top:3px solid rgba(15,18,29,.65);box-shadow:0 -4px 0 rgba(255,255,255,.035) inset;z-index:1}
.road-grid{position:absolute;left:108px;right:-1px;top:0;bottom:31px;display:grid;grid-template-columns:repeat(8,minmax(155px,1fr));min-width:1180px}
.lane{position:relative;border-left:1px solid rgba(30,35,57,.1);display:flex;justify-content:center;padding-top:134px}
.lane:after{content:"";position:absolute;left:-2px;top:14px;width:4px;height:calc(100% - 28px);background:repeating-linear-gradient(to bottom,var(--road-line) 0 18px,transparent 18px 38px);opacity:.9}
.lane:first-child:after{display:none}
.lane:before{content:"";position:absolute;width:54px;height:34px;border-radius:11px;background:#343c5a;top:62px;right:22px;opacity:.65;box-shadow:-84px 262px 0 #343c5a,28px 322px 0 #343c5a}
.road-node{width:112px;height:112px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at 45% 42%,#5f6d9e 0 57%,#4f5a86 58% 66%,#2c344f 67% 73%,#4f5b89 74% 80%,#30374f 81%);color:#c9d0ee;font-size:25px;font-weight:900;text-shadow:0 2px 0 rgba(28,32,50,.45);box-shadow:0 4px 0 rgba(25,29,45,.38),inset 0 0 0 2px rgba(153,166,224,.14)}
.drain{position:absolute;bottom:0;width:110px;height:88px;border-radius:55px 55px 0 0;background:repeating-linear-gradient(90deg,#2d344f 0 7px,#1f263d 7px 13px);border:8px solid #2c344d;border-bottom:0;box-shadow:0 0 0 5px #59627f inset}
.start-bay{position:absolute;left:0;top:0;bottom:31px;width:108px;background:#303750;border-right:1px solid rgba(255,255,255,.03);z-index:2}
.start-arch{position:absolute;left:19px;bottom:0;width:70px;height:185px;border:7px solid #161b2c;border-bottom:0;border-radius:38px 38px 0 0;box-shadow:0 0 0 5px #3e4667 inset}
.chicken{position:absolute;left:12px;bottom:8px;font-size:72px;filter:drop-shadow(0 4px 0 rgba(0,0,0,.18));transform:scaleX(-1);z-index:3}
.result-hud{position:absolute;z-index:4;left:50%;top:50%;transform:translate(-50%,-50%);width:min(92%,390px);padding:18px 18px 16px;border-radius:18px;background:rgba(37,42,62,.93);border:1px solid rgba(164,174,214,.32);box-shadow:0 14px 40px rgba(8,10,18,.38),inset 0 1px 0 rgba(255,255,255,.05);text-align:center;backdrop-filter:blur(6px)}
.result-label{font-size:11px;font-weight:900;letter-spacing:1.6px;color:#b5bbd4}
.result-value{margin:5px 0 2px;font-size:52px;line-height:1;font-weight:1000;color:#fff;text-shadow:0 3px 0 rgba(0,0,0,.12)}
.result-time{font-size:12px;color:#aab0c7}
.result-image{display:block;width:100%;height:auto;max-height:52vh;object-fit:contain;margin:14px auto 0;border-radius:12px;background:#252a3d;border:1px solid rgba(255,255,255,.08);cursor:zoom-in}
.image-hint{font-size:10px;color:#a9afc5;margin-top:7px}
.control-panel{flex:0 0 auto;margin:18px 24px 22px;padding:16px 18px 18px;border-radius:18px;background:linear-gradient(180deg,#41485f,#383f56);border:2px solid #505b76;box-shadow:0 6px 14px rgba(0,0,0,.22),inset 0 1px 0 rgba(255,255,255,.04)}
.control-topline{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:13px}.control-title{font-weight:900;font-size:16px}.control-subtitle,.chance-copy{font-size:12px;color:#b1b6c8}.chance-copy{font-weight:800;opacity:.9}
.control-layout{display:grid;grid-template-columns:minmax(0,1fr) 215px;gap:18px;align-items:stretch}.difficulty{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#555c74;border-radius:10px;padding:0;overflow:hidden;box-shadow:inset 0 1px 2px rgba(0,0,0,.22)}
.level{min-height:56px;border:0;background:transparent;color:#aeb3c4;font-weight:900;font-size:15px;cursor:pointer;transition:.16s ease;position:relative}.level:not(:disabled):hover{background:rgba(255,255,255,.045);color:#fff}.level.active{margin:7px;border-radius:8px;min-height:42px;background:#697188;color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 4px 10px rgba(22,26,39,.2)}.level.locked,.level.locked:disabled{color:#81869a;background:rgba(44,49,68,.18);cursor:not-allowed;opacity:.62;box-shadow:none}.level.locked:after{content:"";position:absolute;inset:0;background:rgba(40,44,59,.14);pointer-events:none}.generate{border:0;border-radius:13px;min-height:56px;background:linear-gradient(180deg,#42d064,#35bf56);color:#fff;font-size:22px;font-weight:1000;letter-spacing:.2px;cursor:pointer;box-shadow:0 5px 0 #269b43,0 9px 18px rgba(14,92,40,.22),inset 0 1px 0 rgba(255,255,255,.18);transition:transform .08s ease,filter .15s ease}.generate:active{transform:translateY(3px);box-shadow:0 2px 0 #269b43,0 5px 12px rgba(14,92,40,.18)}.generate:disabled{filter:saturate(.65);opacity:.72;cursor:wait}
.image-viewer{position:fixed;z-index:1000;inset:0;background:rgba(8,10,16,.96);display:flex;align-items:center;justify-content:center;padding:18px}.image-viewer img{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}.image-viewer-close{position:fixed;right:14px;top:max(14px,env(safe-area-inset-top));width:46px;height:46px;padding:0;border:1px solid rgba(255,255,255,.16);border-radius:50%;background:rgba(49,55,77,.92);color:#fff;font-size:30px;line-height:1;cursor:pointer;z-index:1001}
@media(max-width:900px){
  .game-header{height:52px;flex-basis:52px;padding:0 12px}.logo{font-size:20px}.logo-coin{font-size:25px}.header-status{padding:7px 9px}
  .road-stage{min-height:390px}.road-grid{left:86px;min-width:900px;grid-template-columns:repeat(8,118px)}.start-bay{width:86px}.start-arch{left:13px;width:60px;height:158px}.chicken{font-size:61px;left:8px}.lane{padding-top:115px}.road-node{width:88px;height:88px;font-size:20px}.drain{width:86px;height:73px}.lane:before{transform:scale(.82)}
  .result-hud{width:min(86%,360px)}
  .control-panel{margin:12px 10px max(12px,env(safe-area-inset-bottom));padding:13px;border-radius:15px}.control-layout{grid-template-columns:1fr;gap:11px}.difficulty{min-height:54px}.generate{min-height:58px}.chance-copy{display:none}
}
@media(max-width:480px){
  .game-shell{background:linear-gradient(180deg,#3c4463 0,#3c4463 61%,#111522 61%,#111522 100%)}
  .road-stage{min-height:360px}.road-grid{left:72px;min-width:760px;grid-template-columns:repeat(8,100px)}.start-bay{width:72px}.start-arch{left:10px;width:52px;height:138px;border-width:6px}.chicken{font-size:52px;left:6px;bottom:8px}.lane{padding-top:102px}.road-node{width:76px;height:76px;font-size:17px}.drain{width:74px;height:65px}.lane:before{transform:scale(.68);right:8px}
  .result-hud{top:49%;width:min(82%,310px);padding:14px}.result-value{font-size:44px}.result-image{max-height:42vh}
  .control-topline{margin-bottom:9px}.control-title{font-size:14px}.control-subtitle{font-size:11px}.level{font-size:12px;min-height:50px}.level.active{margin:5px;min-height:40px}.generate{font-size:20px}
}

/* v6 opening info modal */
html.modal-open,
body.modal-open{overflow:hidden!important;overscroll-behavior:none}

.intro-modal{
  position:fixed;
  z-index:1100;
  inset:0;
  display:grid;
  place-items:center;
  width:100%;
  height:100dvh;
  min-height:100%;
  padding:max(18px,env(safe-area-inset-top)) 16px max(18px,env(safe-area-inset-bottom));
  background:rgba(8,11,20,.80);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  overflow:auto;
  overscroll-behavior:contain;
  animation:introFade .18s ease-out both;
}

.intro-card{
  position:relative;
  width:min(100%,420px);
  max-width:calc(100vw - 32px);
  max-height:calc(100dvh - 36px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  overflow:auto;
  -webkit-overflow-scrolling:touch;
  padding:26px 22px 22px;
  border-radius:22px;
  background:
    radial-gradient(circle at 100% 0,rgba(103,119,176,.18),transparent 36%),
    linear-gradient(180deg,#3f4764 0%,#30364d 100%);
  border:1px solid rgba(187,198,238,.28);
  box-shadow:0 24px 70px rgba(0,0,0,.52),inset 0 1px 0 rgba(255,255,255,.05);
  color:#fff;
  text-align:left;
  scrollbar-width:thin;
  scrollbar-color:#6a748f transparent;
  animation:introCardIn .22s cubic-bezier(.2,.75,.25,1) both;
}

.intro-card::-webkit-scrollbar{width:5px}
.intro-card::-webkit-scrollbar-thumb{background:#6a748f;border-radius:999px}

.intro-close{
  position:absolute;
  z-index:2;
  right:12px;
  top:12px;
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  padding:0;
  border:1px solid rgba(255,255,255,.09);
  border-radius:11px;
  background:rgba(18,22,35,.46);
  color:#eef1ff;
  font-size:24px;
  line-height:1;
  cursor:pointer;
  box-shadow:none;
}
.intro-close:active{transform:scale(.94)}

.intro-kicker{
  display:inline-flex;
  align-items:center;
  min-height:27px;
  max-width:calc(100% - 44px);
  padding:6px 10px;
  border:1px solid rgba(81,222,112,.20);
  border-radius:999px;
  background:rgba(54,200,91,.10);
  color:#81e897;
  font-size:10px;
  font-weight:1000;
  letter-spacing:.95px;
  line-height:1.2;
  text-transform:uppercase;
  overflow-wrap:anywhere;
}

.intro-card h2{
  margin:15px 42px 12px 0;
  color:#fff;
  font-size:25px;
  line-height:1.08;
  letter-spacing:-.35px;
  overflow-wrap:anywhere;
}

.intro-card p{
  margin:0;
  color:#edf0fb;
  font-size:14px;
  line-height:1.55;
  white-space:pre-line;
  overflow-wrap:anywhere;
  word-break:normal;
}

.intro-card p + p{margin-top:13px}

.intro-card .intro-note{
  padding:11px 12px;
  border-radius:12px;
  background:rgba(17,21,34,.27);
  border:1px solid rgba(255,255,255,.055);
  color:#bdc4d8;
  font-size:12px;
  line-height:1.45;
}

.intro-action{
  position:relative;
  width:100%;
  min-height:51px;
  margin-top:18px;
  padding:12px 18px;
  border:0;
  border-radius:13px;
  background:linear-gradient(180deg,#43d165,#34bd55);
  color:#fff;
  font-size:15px;
  font-weight:1000;
  letter-spacing:.15px;
  cursor:pointer;
  box-shadow:0 4px 0 #269b43,0 9px 18px rgba(14,92,40,.20),inset 0 1px 0 rgba(255,255,255,.16);
}
.intro-action:active{transform:translateY(2px);box-shadow:0 2px 0 #269b43,0 5px 12px rgba(14,92,40,.16)}

@keyframes introFade{from{opacity:0}to{opacity:1}}
@keyframes introCardIn{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}

@media(max-width:520px){
  .intro-modal{
    place-items:center;
    padding:max(14px,env(safe-area-inset-top)) 12px max(14px,env(safe-area-inset-bottom));
  }
  .intro-card{
    width:100%;
    max-width:390px;
    max-height:calc(100dvh - 28px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    padding:23px 18px 18px;
    border-radius:19px;
  }
  .intro-card h2{font-size:22px;margin-top:14px;margin-right:38px}
  .intro-card p{font-size:13.5px;line-height:1.5}
  .intro-kicker{font-size:9.5px}
  .intro-action{margin-top:16px}
}

@media(max-height:560px){
  .intro-modal{align-items:start}
  .intro-card{max-height:calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom))}
}