/* Cat Sudoku：薄荷绿底、藏青墨色、芥末黄毛线点缀，粉彩色块。全部样式挂在 body.cs 下，游戏框架页不受影响。 */
body.cs{
  --bg:#E6EFEA; --panel:#FBFDFB; --ink:#22314A; --soft:#56657B; --yarn:#F2B705;
  --lilac:#CDB8F2; --mint:#A8E3C8; --peach:#FFC9A8; --sky:#A9D3F5; --butter:#F7E39A;
  margin:0; background:var(--bg); color:var(--ink);
  font-family:"Bricolage Grotesque",ui-rounded,system-ui,sans-serif; font-size:18px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
body.cs *{box-sizing:border-box}
body.cs a{color:var(--ink);text-decoration-color:var(--yarn);text-decoration-thickness:2px;text-underline-offset:3px}
body.cs a:focus-visible,body.cs button:focus-visible,body.cs summary:focus-visible{outline:3px solid var(--ink);outline-offset:3px;border-radius:6px}

.cs-top{max-width:1080px;margin:0 auto;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.cs-brand{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;font-size:21px;letter-spacing:-.01em}
.cs-logo{width:34px;height:34px}
.cs-nav{display:flex;gap:18px;font-size:16px;font-weight:600}
.cs-nav a{text-decoration:none}
.cs-nav a:hover{text-decoration:underline}

.cs-hero{max-width:1080px;margin:0 auto;padding:4px 16px 8px;display:flex;flex-direction:column;align-items:center}
.cs-hero h1{margin:0;font-size:clamp(34px,6vw,54px);font-weight:800;letter-spacing:-.025em;line-height:1.05;text-align:center}
.cs-lede{margin:6px 0 14px;color:var(--soft);text-align:center;max-width:36em;font-size:17px}

/* 播放器：封面、加载、游戏同一位置同一大小 */
.cs-stage{position:relative;width:100%;max-width:560px;aspect-ratio:560/760;border:3px solid var(--ink);border-radius:22px;overflow:hidden;background:var(--bg);box-shadow:0 10px 0 -2px var(--ink)}
.cs-stage iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.cs-cover{position:absolute;inset:0;cursor:pointer}
.cs-cover img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.95)}
.cs-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(230,239,234,0) 40%,rgba(34,49,74,.35))}
.cs-play{position:absolute;left:50%;bottom:9%;transform:translateX(-50%);z-index:1;border:3px solid var(--ink);background:var(--yarn);color:var(--ink);font:inherit;font-weight:800;font-size:22px;padding:14px 30px;border-radius:999px;cursor:pointer;box-shadow:0 5px 0 var(--ink);white-space:nowrap}
.cs-play:hover{transform:translateX(-50%) translateY(-2px);box-shadow:0 7px 0 var(--ink)}
.cs-play:active{transform:translateX(-50%) translateY(3px);box-shadow:0 2px 0 var(--ink)}
.cs-loading{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--bg);font-weight:600;font-size:18px}
.cs-stage[data-gf-state=loading] .cs-loading{display:flex}
.cs-yarn{width:64px;height:64px;border-radius:50%;background:var(--yarn);border:3px solid var(--ink);position:relative;animation:cs-roll 1s linear infinite}
.cs-yarn::before,.cs-yarn::after{content:"";position:absolute;inset:8px;border:2px solid var(--ink);border-radius:50%;border-left-color:transparent;border-bottom-color:transparent}
.cs-yarn::after{inset:18px;transform:rotate(90deg)}
@keyframes cs-roll{to{transform:rotate(360deg)}}

.cs-actions{display:flex;gap:10px;margin:22px 0 4px;align-items:center;flex-wrap:wrap;justify-content:center}
.cs-act{display:inline-flex;align-items:center;gap:6px;border:2px solid var(--ink);background:var(--panel);color:var(--ink);font:inherit;font-weight:600;font-size:16px;padding:8px 16px;border-radius:999px;cursor:pointer}
.cs-act svg{width:18px;height:18px;fill:none;stroke:var(--ink);stroke-width:2}
.cs-act[data-gf-liked] svg,.cs-act[aria-pressed=true] svg{fill:#E85D75;stroke:#E85D75}
.cs-act-msg{font-size:15px;color:var(--soft)}

/* 正文：一栏，像谜题小册子的说明页 */
.cs-read{max-width:720px;margin:0 auto;padding:28px 16px 40px}
.cs-read h2{font-size:30px;font-weight:800;letter-spacing:-.015em;line-height:1.15;margin:44px 0 10px}
.cs-read h3{font-size:21px;font-weight:800;margin:26px 0 6px}
.cs-read p,.cs-read li{color:#2C3B52}
.cs-read ul,.cs-read ol{padding-left:1.2em}
.cs-read li{margin:4px 0}
.cs-read img{max-width:100%;height:auto;border:3px solid var(--ink);border-radius:16px;display:block;margin:18px auto}
.cs-read table{width:100%;border-collapse:collapse;margin:14px 0;font-size:16px}
.cs-read th,.cs-read td{border-bottom:2px solid rgba(34,49,74,.15);padding:8px 6px;text-align:left}
.cs-read blockquote{margin:16px 0;padding:12px 16px;border-left:6px solid var(--yarn);background:var(--panel);border-radius:0 12px 12px 0}
.cs-plain{padding-top:10px}
.cs-plain h1{font-size:40px;font-weight:800;letter-spacing:-.02em;line-height:1.1;margin:10px 0 18px}
.cs-back{margin-top:36px;font-weight:700}

.cs-faq details{border:2px solid var(--ink);background:var(--panel);border-radius:14px;padding:12px 16px;margin:10px 0}
.cs-faq summary{font-weight:800;cursor:pointer;font-size:18px}
.cs-faq details p{margin:8px 0 2px}

.cs-comments{margin-top:44px}
.cs-form{display:grid;gap:10px;background:var(--panel);border:2px solid var(--ink);border-radius:16px;padding:16px}
.cs-form label{display:grid;gap:4px;font-weight:600;font-size:15px}
.cs-form input,.cs-form textarea{font:inherit;font-size:16px;border:2px solid rgba(34,49,74,.35);border-radius:10px;padding:8px 10px;background:#fff;color:var(--ink)}
.cs-form-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.cs-form button[type=submit]{border:2px solid var(--ink);background:var(--ink);color:#fff;font:inherit;font-weight:700;padding:8px 18px;border-radius:999px;cursor:pointer}
.cs-cancel{display:none;border:0;background:none;font:inherit;text-decoration:underline;cursor:pointer;color:var(--soft)}
.cs-form[data-gf-replying] .cs-cancel{display:inline}
.cs-replying:empty{display:none}
.cs-ccount{color:var(--soft);font-size:15px;margin:16px 0 6px}
.cs-c{border-top:2px solid rgba(34,49,74,.12);padding:12px 0}
.cs-c-head{margin:0;display:flex;gap:10px;align-items:baseline;font-size:15px}
.cs-c-head time{color:var(--soft);font-size:14px}
.cs-c-text{margin:4px 0}
.cs-owner{display:none;background:var(--yarn);border-radius:6px;padding:0 6px;font-size:13px;font-weight:700}
.cs-c[data-gf-owner] .cs-owner,[data-gf-owner] > .cs-c-head .cs-owner{display:inline}
.cs-to{font-weight:700;margin-right:4px}
.cs-to:empty{display:none}
.cs-reply{border:0;background:none;font:inherit;font-size:14px;color:var(--soft);text-decoration:underline;cursor:pointer;padding:0}
.cs-replies{margin-left:18px;border-left:3px solid var(--mint);padding-left:12px}
.cs-replies:empty{display:none}
.cs-empty{display:none;color:var(--soft)}
[data-gf-empty] .cs-empty{display:block}
[data-gf-off]{display:none}

.cs-foot{background:var(--ink);color:#E6EFEA;margin-top:30px}
.cs-foot-in{max-width:1080px;margin:0 auto;padding:28px 16px}
body.cs .cs-foot a{color:#E6EFEA;margin-right:16px;font-size:15px;display:inline-block;margin-bottom:6px}
.cs-foot-brand{font-weight:800;font-size:20px;margin:0}
.cs-foot-note{margin:4px 0 14px;opacity:.85;font-size:15px}
.cs-foot-copy{margin:16px 0 0;opacity:.7;font-size:14px}

@media (max-width:600px){
  body.cs{font-size:17px}
  .cs-nav{gap:12px;font-size:15px}
  .cs-nav a:nth-child(1){display:none}
  .cs-read h2{font-size:25px}
  .cs-play{font-size:19px;padding:12px 22px}
}
@media (prefers-reduced-motion:reduce){.cs-yarn{animation:none}}

/* 解题器 */
.cs-lede-left{color:var(--soft);margin:-6px 0 18px}
.sv{background:var(--panel);border:3px solid var(--ink);border-radius:20px;padding:16px;margin:0 0 28px}
.sv-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:6px 0}
.sv-row label{font-weight:700}
.sv select{font:inherit;font-size:16px;border:2px solid var(--ink);border-radius:10px;padding:6px 8px;background:#fff;color:var(--ink)}
.sv-btn{font:inherit;font-weight:700;font-size:16px;border:2px solid var(--ink);background:#fff;color:var(--ink);border-radius:999px;padding:8px 16px;cursor:pointer}
.sv-main{background:var(--yarn)}
.sv-step{font-size:16px;margin:12px 0 6px;color:#2C3B52}
.sv-pal{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 12px}
.sv-sw{width:38px;height:38px;border-radius:10px;border:2px solid rgba(34,49,74,.35);cursor:pointer}
.sv-sw[aria-checked=true]{border:3px solid var(--ink);box-shadow:0 0 0 3px var(--yarn)}
.sv-board{display:grid;border:3px solid var(--ink);border-radius:12px;overflow:hidden;max-width:520px;aspect-ratio:1/1;touch-action:none;user-select:none;-webkit-user-select:none}
.sv-c{border:0;border-right:1px solid rgba(34,49,74,.2);border-bottom:1px solid rgba(34,49,74,.2);border-top:0 solid var(--ink);border-left:0 solid var(--ink);padding:0;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:clamp(14px,4vw,28px);min-width:0;min-height:0}
.sv-msg{font-weight:700;min-height:1.5em;margin:10px 0 0}
.sv-bad{color:#B42318}

.cs-note{font-size:15px;color:var(--soft);margin:-10px 0 18px}