:root{
  --ink:#2f2620;
  --ink-soft:#6b5d4f;
  --red:#a83a2b;
  --red-deep:#7e2418;
  --gold:#c9a227;
  --paper:#f6ecd6;
  --paper-2:#efe0bd;
  --wood:#c58f4d;
  --wood-dark:#a06a30;
  --jade:#3f7d6a;
}
*{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;}
body{
  font-family:'Noto Serif SC','Songti SC','SimSun',serif;
  color:var(--ink);
  background:linear-gradient(180deg,#f4ead4 0%,#e9d8b8 55%,#dcc49a 100%);
  overflow-x:hidden;
  min-height:100vh;
  position:relative;
}
.bg-art{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;}
.cloud{
  position:fixed;background:#fff;
  border-radius:999px;
  opacity:.55;filter:blur(6px);
  z-index:0;pointer-events:none;
  animation:drift linear infinite;
}
.cloud::before,.cloud::after{
  content:'';position:absolute;background:#fff;border-radius:50%;
}
.cloud::before{width:60%;height:160%;top:-90%;left:12%;}
.cloud::after{width:50%;height:130%;top:-70%;right:12%;}
.cloud-1{width:240px;height:46px;top:12%;left:-8%;animation-duration:70s;}
.cloud-2{width:180px;height:36px;top:26%;right:-6%;animation-duration:90s;}
.cloud-3{width:150px;height:30px;top:6%;left:38%;animation-duration:110s;opacity:.4;}
@keyframes drift{
  0%{transform:translateX(-10%)}
  50%{transform:translateX(8%)}
  100%{transform:translateX(-10%)}
}
.petals{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.petal{
  position:absolute;top:-30px;
  width:14px;height:10px;
  background:radial-gradient(circle at 35% 35%, #f7c6bd, #e48f82);
  border-radius:60% 40% 60% 40%;
  opacity:0;
  animation:petalFall linear infinite;
}
@keyframes petalFall{
  0%{transform:translate3d(0,0,0) rotate(0deg);opacity:0;}
  8%{opacity:.85;}
  100%{transform:translate3d(-60px,110vh,0) rotate(320deg);opacity:0;}
}

.stage{
  position:relative;z-index:1;
  max-width:1080px;margin:0 auto;
  padding:26px 16px 40px;
}
.banner{text-align:center;margin-bottom:22px;}
.title{
  font-family:'Ma Shan Zheng','STKaiti','KaiTi','FangSong',serif;
  font-size:clamp(34px,5vw,52px);
  font-weight:400;
  color:var(--ink);
  letter-spacing:6px;
  display:inline-block;
  position:relative;
  text-shadow:2px 2px 0 rgba(255,255,255,.6);
}
.title::before{
  content:'★';position:absolute;left:-42px;top:-2px;
  color:var(--gold);font-size:22px;
  animation:twinkle 2.4s ease-in-out infinite;
}
.title::after{
  content:'★';position:absolute;right:-42px;top:-2px;
  color:var(--gold);font-size:22px;
  animation:twinkle 2.4s ease-in-out 1.2s infinite;
}
@keyframes twinkle{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}
.subtitle{
  margin-top:6px;color:var(--ink-soft);
  font-size:14px;letter-spacing:4px;
}
.subtitle::before,.subtitle::after{content:'——';color:var(--red);margin:0 8px;}

.layout{
  display:flex;gap:28px;
  align-items:flex-start;justify-content:center;
  flex-wrap:wrap;
}

/* ---------- 哪吒面板 ---------- */
.neza-panel{
  width:288px;flex-shrink:0;
  display:flex;flex-direction:column;align-items:center;
}
.neza-frame{
  position:relative;
  width:252px;padding:20px 18px 12px;
  background:linear-gradient(160deg,#fdf6e4,#f0e0bf);
  border:1px solid #d9c28f;
  border-radius:14px;
  box-shadow:0 10px 26px rgba(90,60,20,.18), inset 0 0 0 4px rgba(255,255,255,.35), inset 0 0 26px rgba(160,110,40,.10);
}
.neza-frame::before{
  content:'';position:absolute;top:8px;left:8px;right:8px;bottom:8px;
  border:1px solid rgba(168,58,43,.35);
  border-radius:10px;pointer-events:none;
}
#nezha-svg{width:100%;height:auto;display:block;overflow:visible;}

/* 哪吒动画 */
#nezha-svg.nz-idle{animation:breathe 3.4s ease-in-out infinite;}
@keyframes breathe{
  0%,100%{transform:translateY(0) scale(1);}
  50%{transform:translateY(-6px) scale(1.012);}
}
#nezha-svg.nz-laugh{animation:laughBounce .5s ease-in-out infinite;}
@keyframes laughBounce{
  0%,100%{transform:translateY(0) rotate(-2deg);}
  50%{transform:translateY(-14px) rotate(3deg);}
}
#nezha-svg.nz-dizzy{animation:dizzyShake .42s ease-in-out infinite;}
@keyframes dizzyShake{
  0%,100%{transform:rotate(-7deg);}
  50%{transform:rotate(7deg);}
}
#nezha-svg.nz-dizzy #nz-head{
  animation:headDizzy .5s ease-in-out infinite;
  transform-box:fill-box;transform-origin:center bottom;
}
@keyframes headDizzy{
  0%,100%{transform:rotate(-10deg);}
  50%{transform:rotate(10deg);}
}
#nz-orbit{animation:orbit 2.1s linear infinite;transform-box:view-box;transform-origin:120px 120px;}
@keyframes orbit{to{transform:rotate(360deg)}}
.swirl{animation:swirl 1.1s linear infinite;transform-box:fill-box;transform-origin:center;}
@keyframes swirl{to{transform:rotate(360deg)}}

.nameplate{
  text-align:center;margin-top:10px;
  font-family:'Ma Shan Zheng','STKaiti',serif;
  font-size:20px;color:var(--red-deep);letter-spacing:4px;
}

.speech-bubble{
  position:relative;
  margin-top:16px;
  max-width:252px;
  min-height:56px;
  padding:12px 16px;
  background:var(--paper);
  border:1px solid #d9c28f;
  border-radius:12px;
  box-shadow:0 6px 14px rgba(90,60,20,.15);
  font-size:15px;line-height:1.7;color:var(--ink);
  text-align:center;
}
.speech-bubble::after{
  content:'';position:absolute;top:-8px;left:50%;transform:translateX(-50%);
  border:8px solid transparent;border-bottom-color:var(--paper);
}
.speech-bubble::before{
  content:'';position:absolute;top:-10px;left:50%;transform:translateX(-50%);
  border:9px solid transparent;border-bottom-color:#d9c28f;
}
#speechText::before{content:'「';color:var(--red);}
#speechText::after{content:'」';color:var(--red);}

.turn-badge{
  margin-top:16px;
  padding:8px 22px;
  border-radius:999px;
  font-size:14px;letter-spacing:2px;
  border:1px solid transparent;
  transition:all .3s;
}
.turn-badge.player{
  background:var(--ink);color:var(--paper);
  box-shadow:0 4px 10px rgba(47,38,32,.3);
}
.turn-badge.ai{
  background:linear-gradient(120deg,#7e2418,#a83a2b);
  color:#fbe9c9;
  box-shadow:0 4px 10px rgba(126,36,24,.35);
  animation:badgePulse 1s ease-in-out infinite;
}
@keyframes badgePulse{0%,100%{box-shadow:0 4px 10px rgba(126,36,24,.3)}50%{box-shadow:0 4px 18px rgba(126,36,24,.55)}}

.laugh-words{
  position:absolute;top:-14px;left:0;right:0;
  pointer-events:none;z-index:3;
}
.laugh-words .lw{
  position:absolute;font-family:'Ma Shan Zheng','KaiTi',serif;
  color:var(--red-deep);font-size:26px;
  animation:lwUp 1s ease-in-out infinite;
  text-shadow:0 2px 0 rgba(255,255,255,.6);
}
.laugh-words .lw1{left:6px;animation-delay:0s;}
.laugh-words .lw2{left:50%;transform:translateX(-50%);animation-delay:.25s;}
.laugh-words .lw3{right:6px;animation-delay:.5s;}
@keyframes lwUp{
  0%{opacity:0;transform:translateY(14px) scale(.6);}
  30%{opacity:1;}
  100%{opacity:0;transform:translateY(-30px) scale(1.15);}
}

/* ---------- 棋盘面板 ---------- */
.board-panel{flex:1 1 560px;max-width:660px;min-width:320px;}
.board-wrap{
  position:relative;
  background:linear-gradient(160deg,#fdf6e4,#f0e0bf);
  border:1px solid #d9c28f;
  border-radius:16px;
  padding:14px;
  box-shadow:0 14px 34px rgba(90,60,20,.2), inset 0 0 0 4px rgba(255,255,255,.35);
}
.board-wrap::before{
  content:'';position:absolute;top:6px;left:6px;right:6px;bottom:6px;
  border:1px solid rgba(168,58,43,.4);
  border-radius:12px;pointer-events:none;z-index:2;
}
#board{
  width:100%;height:auto;display:block;
  border-radius:8px;
  touch-action:manipulation;
  cursor:pointer;
}

.win-banner{
  position:absolute;inset:0;z-index:5;
  display:flex;align-items:center;justify-content:center;
  background:rgba(46,34,22,.5);
  border-radius:16px;
  backdrop-filter:blur(2px);
  animation:fadeIn .4s ease-out;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.banner-inner{
  text-align:center;
  background:linear-gradient(160deg,#fdf6e4,#efe0bf);
  border:1px solid #c9a227;
  border-radius:16px;
  padding:34px 52px;
  box-shadow:0 16px 40px rgba(0,0,0,.35), inset 0 0 0 4px rgba(255,255,255,.4);
  animation:popIn .45s cubic-bezier(.2,1.4,.4,1);
}
@keyframes popIn{from{opacity:0;transform:scale(.7)}to{opacity:1;transform:scale(1)}}
.banner-title{
  font-family:'Ma Shan Zheng','STKaiti',serif;
  font-size:44px;color:var(--red-deep);letter-spacing:6px;
}
.banner-sub{margin:10px 0 22px;color:var(--ink-soft);font-size:15px;letter-spacing:1px;}

/* ---------- 控制区 ---------- */
.controls{
  margin-top:16px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:center;
}
.difficulty{
  display:flex;align-items:center;gap:8px;
  background:rgba(246,236,214,.8);
  border:1px solid #d9c28f;
  border-radius:999px;padding:5px 8px;
}
.ctrl-label{font-size:13px;color:var(--ink-soft);margin:0 4px;}
.dbtn,.btn{
  font-family:'Noto Serif SC',serif;
  border:1px solid #c8ab6a;
  background:linear-gradient(180deg,#fdf6e4,#eeddb7);
  color:var(--ink);
  font-size:14px;letter-spacing:1px;
  padding:7px 16px;border-radius:999px;
  cursor:pointer;transition:all .2s;
}
.dbtn:hover,.btn:hover{background:linear-gradient(180deg,#fdf6e4,#e6cf9d);transform:translateY(-1px);}
.dbtn.active{
  background:var(--ink);border-color:var(--ink);color:var(--paper);
  box-shadow:0 4px 10px rgba(47,38,32,.3);
}
.btn:active{transform:translateY(0);}
.btn.primary{
  background:linear-gradient(150deg,#b04330,#7e2418);
  border-color:#7e2418;color:#fbe9c9;
  font-weight:700;
  box-shadow:0 4px 12px rgba(126,36,24,.35);
}
.btn.primary:hover{background:linear-gradient(150deg,#c04e38,#8f2b1d);}

.hidden{display:none !important;}

/* ---------- 响应式 ---------- */
@media (max-width:720px){
  .layout{gap:20px;}
  .neza-panel{width:100%;}
  .neza-frame{width:210px;margin:0 auto;}
  .speech-bubble{margin-left:auto;margin-right:auto;}
  .banner-inner{padding:26px 26px;}
}