/* Ultraman Light Class */
.topbar > a.back,.topbar a.back{
  display:inline-flex !important;align-items:center;justify-content:center;
  width:auto !important;min-width:42px;height:42px;padding:0 14px !important;
  border-radius:999px !important;border:3px solid var(--ink);background:var(--sun);
  font-family:var(--font-d);font-size:18px;flex:none;text-decoration:none;white-space:nowrap;box-sizing:border-box;
}
:root{
  --ink:#1A1530; --ink-2:#5E4F6E; --cream:#FFF6EE; --night:#12182E;
  --red:#FF5A5A; --orange:#FF8A1F; --sun:#FFE08A; --silver:#C8D0E0; --purple:#8E5CF2;
  --green:#3E9B5B; --blue:#3A8FD6; --r:28px;
  --font-d:"ZCOOL KuaiLe","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-b:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{overflow-x:clip;scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:var(--font-b);color:var(--ink);background:var(--night);font-size:18px;line-height:1.7;overflow-x:clip;-webkit-tap-highlight-color:transparent}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
:focus-visible{outline:4px solid var(--sun);outline-offset:3px;border-radius:12px}
html.lang-en .zh{display:none!important}
html.lang-zh .en{display:none!important}

.topbar{position:fixed;inset:12px 12px auto;z-index:50;display:flex;align-items:center;gap:12px;padding:8px 10px 8px 16px;background:rgba(255,246,238,.95);backdrop-filter:blur(10px);border:3px solid var(--ink);border-radius:999px;box-shadow:0 4px 0 var(--ink)}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;font-family:var(--font-d);font-size:20px;white-space:nowrap}
.nav{display:flex;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.nav a{font-family:var(--font-d);font-size:17px;text-decoration:none;padding:6px 12px;border-radius:999px;white-space:nowrap}
.nav a:hover,.nav a.active{background:var(--red);color:#fff}
.lang-toggle{display:flex;gap:2px;background:#fff;border:3px solid var(--ink);border-radius:999px;padding:2px;flex:none}
.lang-toggle button{font-family:var(--font-d);font-size:15px;padding:4px 10px;border-radius:999px}
.lang-toggle button.on{background:var(--red);color:#fff}
.sound-toggle{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--purple);color:#fff;border:3px solid var(--ink);flex:none}
.sound-toggle[aria-pressed="false"]{background:#aaa}
.sound-toggle[aria-pressed="false"] .wave{opacity:0}

.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-d);font-size:20px;padding:10px 22px;background:#fff;border:3px solid var(--ink);border-radius:999px;box-shadow:0 5px 0 var(--ink);text-decoration:none;transition:transform .12s,box-shadow .12s;color:var(--ink)}
.btn:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--ink)}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}
.btn-big{font-size:26px;padding:14px 32px;background:var(--red);color:#fff;text-shadow:0 2px 0 rgba(0,0,0,.2)}
.btn-ghost{background:rgba(255,255,255,.92)}
.speak.talking{background:#A8F0C8}

.hero{position:relative;min-height:100svh;overflow:hidden;display:grid;place-items:end center}
.hero-scene{position:absolute;inset:0;z-index:0}
.sky{position:absolute;inset:0;background:linear-gradient(180deg,#0a0e24 0%,#1a2450 35%,#3a2a60 60%,#ff8a4a 88%,#ffe08a 100%)}
.stars{position:absolute;inset:0;background-image:radial-gradient(2px 2px at 12% 18%,#fff,transparent),radial-gradient(2px 2px at 32% 9%,#fff,transparent),radial-gradient(1.5px 1.5px at 58% 14%,#fff,transparent),radial-gradient(2px 2px at 76% 22%,#fff,transparent),radial-gradient(1.5px 1.5px at 88% 8%,#fff,transparent),radial-gradient(2px 2px at 46% 26%,#fff,transparent);animation:twinkle 3s ease-in-out infinite alternate;pointer-events:none;z-index:1}
@keyframes twinkle{from{opacity:.35}to{opacity:1}}
.l-hero{left:50%;bottom:6%;transform:translateX(-50%);width:min(48vw,400px);z-index:3}
.hero-guy{width:100%;filter:drop-shadow(0 0 40px rgba(255,200,80,.55));border-radius:24px}
.bob{animation:bob 3.2s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hero-copy{position:relative;z-index:5;text-align:center;padding:100px 20px 8vh;max-width:860px;background:linear-gradient(transparent,rgba(18,24,46,.6) 25%,rgba(18,24,46,.9))}
.hero-kicker{display:inline-block;font-family:var(--font-d);font-size:18px;color:var(--ink);background:rgba(255,224,138,.95);border:3px solid var(--ink);border-radius:999px;padding:2px 16px;margin-bottom:12px}
.title-3d{font-family:var(--font-d);font-weight:400;font-size:clamp(40px,8.5vw,92px);line-height:1.05;color:var(--red);letter-spacing:.03em;-webkit-text-stroke:3px var(--ink);paint-order:stroke fill;
  text-shadow:0 2px 0 #D63A3A,0 4px 0 #B83030,0 6px 0 var(--ink),0 0 40px rgba(255,90,90,.45)}
.hero-sub{font-size:20px;margin:14px auto 10px;max-width:32em;font-weight:700;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.55)}
.disclaimer{font-size:13px;color:rgba(255,255,255,.85);max-width:36em;margin:0 auto 18px;line-height:1.45}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.sec{position:relative;padding:clamp(56px,8vw,100px) clamp(16px,4vw,48px)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 36px}
.sec-head h2{font-family:var(--font-d);font-weight:400;font-size:clamp(36px,5.5vw,56px);line-height:1.15;margin:12px 0 10px}
.sec-head p{font-size:18px;color:var(--ink-2)}
.sec-head.light h2{color:#fff}.sec-head.light p{color:#DCD3F5}
.chip{display:inline-block;font-family:var(--font-d);font-size:17px;padding:4px 16px;border-radius:999px;background:var(--orange);color:#fff;border:3px solid var(--ink)}
.chip-red{background:var(--red)}.chip-orange{background:var(--orange)}.chip-purple{background:var(--purple)}.chip-green{background:var(--green)}

.sec-facts{background:var(--cream)}
.cards{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:22px}
.card{height:360px;perspective:900px}
.card-in{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .7s cubic-bezier(.3,1.4,.5,1)}
.card.flip .card-in{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border:4px solid var(--ink);border-radius:var(--r);box-shadow:0 8px 0 var(--ink);overflow:hidden;cursor:pointer}
.front{display:flex;flex-direction:column;background:var(--c)}
.front .pic{flex:1;display:grid;place-items:center;font-size:72px;background:radial-gradient(circle at 50% 55%,rgba(255,255,255,.45),transparent 65%)}
.front .nm{background:#fff;border-top:4px solid var(--ink);padding:12px 14px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.front .nm b{font-family:var(--font-d);font-weight:400;font-size:26px;line-height:1.1}
.tag{font-size:13px;font-weight:700;padding:3px 10px;border-radius:999px;border:2px solid var(--ink);background:var(--sun);white-space:nowrap}
.back{transform:rotateY(180deg);background:#fff;padding:18px;display:flex;flex-direction:column;gap:8px}
.back h3{font-family:var(--font-d);font-weight:400;font-size:26px}
.back p{font-size:16px;line-height:1.55}
.back .sci{background:#FFF0E0;border-radius:14px;padding:10px 12px;font-size:14px}
.back .sci b{color:var(--red)}
.mini{font-size:14px;font-weight:800;padding:6px 12px;border-radius:999px;border:3px solid var(--ink);background:var(--sun);display:inline-flex;align-items:center;gap:6px;margin-top:auto}

.sec-mix{background:linear-gradient(#12182E,#2A2150)}
.mix-wrap{max-width:900px;margin:0 auto;display:grid;gap:24px;justify-items:center}
.mix-stage{position:relative;width:min(360px,85vw);height:min(360px,85vw);border-radius:50%;background:#0a0a12;border:4px solid #fff;overflow:hidden;display:grid;place-items:center}
.spot{position:absolute;width:55%;height:55%;border-radius:50%;opacity:0;mix-blend-mode:screen;transition:opacity .35s;filter:blur(8px)}
.spot.r{background:#ff2020;left:12%;top:18%}.spot.g{background:#20ff40;right:12%;top:18%}.spot.b{background:#2060ff;left:28%;bottom:10%}
.spot.on{opacity:.85}
.mix-label{position:relative;z-index:2;font-family:var(--font-d);font-size:22px;color:#fff;text-shadow:0 2px 8px #000;text-align:center;padding:0 12px}
.mix-controls{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:center}
.sw{display:inline-flex;align-items:center;gap:8px;background:#fff;border:3px solid var(--ink);border-radius:999px;padding:8px 16px;font-family:var(--font-d);cursor:pointer}
.sw input{width:18px;height:18px}
.dot{width:18px;height:18px;border-radius:50%;border:2px solid var(--ink)}
.dot.r{background:#ff4040}.dot.g{background:#40ff60}.dot.b{background:#4060ff}

.sec-power{background:linear-gradient(var(--cream),#FFE0C8)}
.power-wrap{max-width:800px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.power-ring{position:relative;width:220px;height:220px;margin:0 auto}
.power-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.power-ring .track{fill:none;stroke:#ddd;stroke-width:10}
.power-ring .prog{fill:none;stroke:var(--red);stroke-width:10;stroke-linecap:round;stroke-dasharray:326.7;stroke-dashoffset:326.7;transition:stroke-dashoffset .2s linear}
.power-emoji{position:absolute;inset:0;display:grid;place-items:center;font-size:64px;padding-bottom:24px}
.power-sec{position:absolute;bottom:28px;left:0;right:0;text-align:center;font-family:var(--font-d);font-size:28px}
.power-side p{margin-bottom:16px}
.power-side .btn{margin:6px 8px 6px 0}

.sec-kind{background:linear-gradient(#2A2150,#12182E)}
.kind-board{max-width:900px;margin:0 auto 20px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.bin{border:4px dashed rgba(255,255,255,.5);border-radius:var(--r);padding:14px;min-height:160px;color:#fff}
.bin.over{border-style:solid;background:rgba(255,255,255,.08)}
.bin h3{font-family:var(--font-d);font-size:22px;margin-bottom:10px;text-align:center}
.bin .drop{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;min-height:60px}
.light-bin{border-color:var(--sun)}.dark-bin{border-color:#888}
.kind-items{max-width:900px;margin:0 auto;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.kitem{font-family:var(--font-d);font-size:16px;padding:10px 14px;background:#fff;border:3px solid var(--ink);border-radius:16px;box-shadow:0 4px 0 var(--ink);cursor:grab;user-select:none;touch-action:none}
.kitem.placed{opacity:.3;pointer-events:none}
.kind-score{text-align:center;color:#FFE08A;font-family:var(--font-d);font-size:22px;margin:16px 0 8px;min-height:1.4em}
#kindReset{display:block;margin:0 auto}

.sec-rainbow{background:var(--cream)}
.rb-wrap{max-width:1000px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.rb-art{display:grid;gap:12px}
.rb-art img{border-radius:20px;border:4px solid var(--ink);box-shadow:0 8px 0 var(--ink)}
.sun-pic{max-width:70%;margin:0 auto}
.rb-card{background:#fff;border:4px solid var(--ink);border-radius:var(--r);padding:24px;box-shadow:0 8px 0 var(--ink)}
.rb-card h3{font-family:var(--font-d);font-size:28px;margin:12px 0 8px}
.rainbow-bar{height:28px;border-radius:999px;border:3px solid var(--ink);background:#eee;overflow:hidden;position:relative}
.rainbow-bar.on{background:linear-gradient(90deg,#e40303,#ff8c00,#ffed00,#008026,#24408e,#732982)}
.rb-card .btn{margin:10px 8px 0 0}

.foot{background:var(--night);color:#C8D0E0;text-align:center;padding:28px 16px;font-size:14px}
.foot a{display:inline-block;margin-top:8px;font-family:var(--font-d);font-size:18px;color:#fff}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:10px 22px;border-radius:999px;font-family:var(--font-d);opacity:0;pointer-events:none;transition:.3s;z-index:100}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media(max-width:800px){
  .nav{display:none}
  .power-wrap,.kind-board,.rb-wrap{grid-template-columns:1fr}
  .title-3d{font-size:clamp(34px,10vw,60px)}
}