/* =========================================================
   go-rules.css — 围棋入门
   依赖 base.css 与 tool.css。强调色取自 base.css 的调色板：天青 + 琥珀，
   与篮球（橙 + 琥珀）、足球（薄荷 + 暖金）、计时器（天青 + 薄荷）、蒙学（朱砂 + 墨青）、
   诗词卡（紫 + 粉）、死活题库（青 + 紫）都区分开；棋盘本身用引擎内置木色，不跟页面抢色。
   ========================================================= */
body.gorules{--a1:var(--cyan);--a2:var(--amber)}
.gorules .tool__shell{max-width:1080px}
.gorules [hidden]{display:none!important}
.gorules button,.gorules .btn,.gorules .chip{touch-action:manipulation}
.gorules .tags{margin-top:16px}
.gorules .tags li{font-size:.72rem}
.gorules .tags li span{font-family:var(--font-mono);color:var(--a1);padding-left:2px}
.gorules .tabs{margin-top:22px}

/* ---------- 小标题 ---------- */
.gr-kicker{margin:0 0 10px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--a2)}
.gr-kicker span{display:inline-block;margin-left:12px;color:var(--muted);letter-spacing:.02em}
.gorules .view__lead{margin:-6px 0 18px;font-size:.88rem;line-height:1.85;color:var(--muted);max-width:64ch}
.gorules .view__lead b{color:var(--ink-2)}

/* ---------- 随机一条 ----------
   和在所有栏目里抽的，跟当前栏目无关：排在 hero 里、栏目条之上。 */
.gr-daily{position:relative;display:flex;align-items:center;gap:24px;justify-content:space-between;overflow:hidden;margin:8px 0 0;padding:22px 26px;border-radius:var(--radius);background:linear-gradient(120deg,rgba(255,196,107,.13),rgba(53,224,255,.05) 62%,rgba(255,255,255,.03));border:1px solid rgba(255,196,107,.2)}
.gr-daily__copy{position:relative;z-index:1;min-width:0}
.gr-daily h2{margin:6px 0 8px;font-size:1.14rem;line-height:1.5;letter-spacing:-.015em}
.gr-daily p:not(.gr-kicker){margin:0;font-size:.85rem;line-height:1.8;color:var(--ink-2);max-width:64ch}
.gr-daily .btn{flex:none;position:relative;z-index:1}
/* 「跳到这一条」跟常识页、首页同一套写法：一行小字 + 箭头，不做成按钮 */
.gr-daily__go{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;margin-top:10px;padding:0;
  border:0;border-bottom:1px solid transparent;background:none;font:inherit;font-size:.78rem;
  color:var(--muted);cursor:pointer;position:relative;z-index:1;
}
.gr-daily__go:hover{color:var(--ink);border-bottom-color:var(--line-2)}
/* 文字下划线要贴着字，所以用伪元素把可点区域向外撑到 44 高，而不是加 padding */
.gr-daily__go::before{content:"";position:absolute;inset:-11px -12px}
.gr-daily__go span{margin-left:2px}
/* 跳过去时闪一下边框，眼睛能接上 */
.gr-card.is-flash{border-color:rgba(255,196,107,.65)}
.gr-daily__art{position:absolute;right:-12px;top:50%;translate:0 -50%;width:140px;height:140px;color:rgba(255,196,107,.3);pointer-events:none}

/* ---------- 搜索与跨栏目命中 ---------- */
/* 栏目条紧跟着的就是这条搜索：两者是一组作用于列表的控件，所以只留 16px。 */
.gr-search{display:flex;gap:10px;margin:16px 0 12px}
.gr-search .input{flex:1 1 auto;min-width:0}
.gr-search .chip{flex:none;white-space:nowrap}
#savedCount{font-family:var(--font-mono);padding-left:5px}
.gr-where{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.gr-note{margin:0 0 16px;font-size:.76rem;line-height:1.7;color:var(--muted)}
.gorules .chip{padding:9px 13px;font-size:.8rem;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--muted)}
.gorules .chip:hover{color:var(--ink);border-color:var(--line-2)}
.gorules .chip[aria-pressed="true"],.gorules .chip.is-on{color:#0a0714;background:linear-gradient(100deg,var(--a1),var(--a2));border-color:transparent;font-weight:620}
.gr-chipnum{font-family:var(--font-mono);font-size:.72rem;opacity:.85;padding-left:4px}
.gr-fav-toggle[aria-pressed="true"]{color:#0a0714}

/* ---------- 分类与计数 ---------- */
.gr-cats{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.gr-count{margin:0 0 16px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.02em;color:var(--muted)}

/* ---------- 卡片 ---------- */
.gr-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.gr-card{display:flex;flex-direction:column;min-width:0;padding:22px;border-radius:16px;border:1px solid var(--line-2);background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.02) 55%,rgba(255,255,255,.04))}
.gr-card__cat{margin:0 0 12px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--a1)}
.gr-card h3{margin:0;font-size:1.02rem;line-height:1.5;letter-spacing:-.01em}
.gr-card__desc{margin:10px 0 14px;font-size:.83rem;line-height:1.8;color:var(--ink-2)}
.gr-card ul{display:grid;gap:9px;margin:0 0 18px;padding:0 0 0 12px;list-style:none;font-size:.81rem;line-height:1.75;color:var(--muted)}
.gr-card ul li{position:relative}
.gr-card ul li::before{content:"";position:absolute;left:-10px;top:.72em;width:4px;height:4px;border-radius:50%;background:var(--a2)}
.gr-card__foot{display:flex;align-items:center;gap:10px;margin-top:auto}
.gr-fav{border-radius:9px;font-size:.78rem;padding:7px 12px;align-self:flex-start}
.gr-fav[aria-pressed="true"]{color:var(--a1);border-color:rgba(255,196,107,.42)}
.gr-card--path h3{color:var(--a2)}
.gr-grid--path{grid-template-columns:repeat(2,minmax(0,1fr))}

/* ---------- 空态与提示 ---------- */
.gr-empty{padding:36px 16px;text-align:center;border:1px dashed var(--line-2);border-radius:16px}
.gr-empty h3{margin:0 0 8px;font-size:1rem}
.gr-empty p{margin:0 0 14px;font-size:.84rem;color:var(--muted)}
.gr-noscript{padding:16px;border:1px solid var(--a2);border-radius:12px;color:var(--a2);font-size:.86rem}

/* ---------- 动手页 ---------- */
.gr-play{display:grid;gap:18px;align-items:start}
.gr-board{border-radius:18px;overflow:hidden;border:1px solid rgba(165,120,63,.55);box-shadow:var(--shadow)}
.gr-board svg:focus-visible{outline:2px solid var(--a2);outline-offset:2px}
.gr-side{display:grid;gap:14px;align-content:start;padding:20px;border-radius:16px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.gr-read{margin:0;display:grid;gap:1px}
.gr-read div{display:grid;grid-template-columns:8.5em 1fr;gap:10px;align-items:baseline;padding:11px 0;border-bottom:1px solid var(--line)}
.gr-read div:last-child{border-bottom:0}
.gr-read dt{font-size:.76rem;color:var(--muted);letter-spacing:.03em}
.gr-read dd{margin:0;font-size:.86rem;line-height:1.65;color:var(--ink)}
.gr-read dd b{color:var(--a1);font-weight:660}
.gr-read dd i{font-style:normal;color:var(--a2)}
.gr-seg{display:flex;width:100%}
.gr-seg button{flex:1 1 auto;min-height:44px}
.gr-seg button[aria-pressed="true"]{color:#0a0714;background:linear-gradient(100deg,var(--a1),var(--a2))}
.gr-controls{grid-template-columns:repeat(2,1fr);margin-top:0}
.gr-controls .ctl{min-height:52px;font-size:.92rem}
.gr-status{margin:0;min-height:2.6em;font-size:.82rem;line-height:1.7;color:var(--ink-2);padding:12px 14px;border-radius:12px;background:rgba(53,224,255,.07);border:1px solid rgba(53,224,255,.22)}

/* ---------- 预设局面 ---------- */
.gr-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:14px}
.gr-presetbtn{display:flex;flex-direction:column;gap:6px;align-items:flex-start;text-align:left;width:100%;min-height:0;padding:15px 16px;border-radius:14px;cursor:pointer;background:rgba(255,255,255,.045);border:1px solid var(--line-2);color:var(--ink);transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease)}
.gr-presetbtn:hover{transform:translateY(-2px);background:rgba(255,255,255,.09);border-color:rgba(255,196,107,.5)}
.gr-presetbtn.is-on{border-color:var(--a1);box-shadow:0 0 0 1px rgba(255,196,107,.4) inset}
.gr-presetbtn__tag{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--a2)}
.gr-presetbtn__name{font-size:.95rem;font-weight:650;line-height:1.4}
.gr-presetbtn__go{font-size:.76rem;color:var(--muted);line-height:1.6}
.gr-preset{margin:0 0 6px;padding:16px 18px;border-radius:14px;font-size:.84rem;line-height:1.85;color:var(--ink-2);background:rgba(255,196,107,.06);border-left:3px solid var(--a1)}
.gr-preset b{display:block;margin-bottom:4px;color:var(--a1)}
.gr-preset span{display:block;margin-top:8px;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media(min-width:861px){
  .gr-play{grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr)}
}
@media(max-width:980px){
  .gr-grid,.gr-presets{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:700px){
  /* 窄屏压矮一档：「换一条」收到右上角（绝对定位，不占正文宽度），说明只留一行，
     「跳到这一条」跟在说明下面——和常识页、首页是同一套。 */
  .gr-daily{display:block;padding:18px 18px 18px 20px}
  .gr-daily__copy{display:block;min-width:0}
  .gr-daily .btn{position:absolute;right:14px;top:16px;padding:.5em .9em;font-size:.82rem;z-index:2}
  .gr-daily .gr-kicker{padding-right:96px}
  .gr-daily h2{margin:4px 0 6px;font-size:1.06rem;line-height:1.45;padding-right:96px}
  .gr-daily p:not(.gr-kicker){display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.7}
  .gr-daily__go{margin-top:8px;font-size:.76rem}
  .gr-daily__art{width:110px;height:110px;right:-20px;opacity:.4}
  .gr-search{flex-wrap:wrap}
  .gr-search .input{flex:1 1 200px}
}
@media(max-width:560px){
  .gr-grid,.gr-presets{grid-template-columns:1fr}
  .gorules .input{font-size:16px;padding:11px 12px}
  .gorules .chip{font-size:.76rem;padding:8px 11px}
  .gr-card{padding:18px}
  .gr-daily h2{font-size:1.04rem}
  .gr-kicker span{display:block;margin-left:0;margin-top:4px}
  .gr-read div{grid-template-columns:1fr;gap:2px}
}
@media(prefers-reduced-motion:reduce){
  .gorules *{scroll-behavior:auto!important;animation:none!important;transition:none!important}
}