:root{--bg:#13111D;--fg:#E8F7FF;--dim:#8C95C4;--cy:#4FE3FF;--vi:#B57CFF;--go:#FFD36B;--pk:#FF6FA8;--panel:#1b1830}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--fg);font:16px/1.6 "Noto Sans",system-ui,-apple-system,"Segoe UI","Noto Sans CJK SC","Noto Sans CJK JP","PingFang SC","Hiragino Sans",sans-serif;overflow-x:hidden}
a{color:inherit}
img{max-width:100%;height:auto;display:block}

/* nav */
nav{position:fixed;z-index:20;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:max(12px,env(safe-area-inset-top)) 4vw 12px;background:linear-gradient(#13111df0,#13111d00)}
.back{text-decoration:none;color:var(--dim);font-size:.85rem;white-space:nowrap}.back:hover{color:var(--fg)}
.links{display:flex;align-items:center;gap:20px}.links>a{text-decoration:none;color:var(--dim);font-size:.9rem}.links>a:hover{color:var(--cy)}
select{background:#ffffff10;color:var(--fg);border:1px solid #ffffff2a;border-radius:99px;padding:6px 12px;font:inherit;font-size:.85rem;cursor:pointer}
select option{color:#13111D}

/* hero */
.hero{position:relative;min-height:100vh;min-height:100svh;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:4vw;padding:100px 7vw 60px;overflow:hidden;background:radial-gradient(ellipse at 20% 30%,#1f2a4a 0,var(--bg) 60%)}
#rivers{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero-in{position:relative;z-index:1}
.hero h1 img{width:min(620px,100%);height:auto;filter:drop-shadow(0 0 30px #4fe3ff40)}
.tag{font-size:clamp(1.5rem,3.2vw,2.4rem);font-weight:700;letter-spacing:-.01em;margin:18px 0 12px;background:linear-gradient(90deg,var(--cy),var(--vi) 50%,var(--go));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:#c3cbe8;font-size:1.08rem;max-width:560px}
.cta{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:28px}
.pill{border:1px solid #4fe3ff66;color:var(--cy);border-radius:99px;padding:6px 14px;font-size:.85rem}
.btn{background:var(--go);color:#2a1f05;text-decoration:none;font-weight:700;border-radius:14px;padding:12px 24px;box-shadow:0 8px 30px #ffd36b40;transition:transform .2s}.btn:hover{transform:translateY(-2px)}
.phone{border-radius:30px;border:5px solid #24203a;overflow:hidden;background:#000;box-shadow:0 30px 80px #000a,0 0 70px #4fe3ff22}
.hero-phone{position:relative;z-index:1;width:min(300px,100%);justify-self:center;transform:rotate(3deg);animation:float 7s ease-in-out infinite}
@keyframes float{50%{transform:rotate(1deg) translateY(-12px)}}

/* sezioni */
.sec{padding:13vh 7vw 6vh;max-width:1240px;margin:0 auto}
.sec h2{font-size:clamp(1.9rem,4.6vw,3.1rem);letter-spacing:-.02em;line-height:1.1}
.lead2{color:var(--dim);margin-top:10px;max-width:720px;font-size:1.05rem}

/* stanza giocabile */
.stage{position:relative;margin-top:30px;height:min(68vh,620px);border-radius:24px;overflow:hidden;background:radial-gradient(ellipse at 10% 50%,#1a2a44 0,#100e19 70%);border:1px solid #ffffff14;box-shadow:inset 0 0 80px #000a}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;touch-action:pan-y}
.stage.over canvas{cursor:grab}.stage.grab canvas{cursor:grabbing}
.toast{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.8);opacity:0;pointer-events:none;background:#13111dee;border:1px solid var(--go);color:var(--go);font-weight:700;font-size:clamp(1rem,2.4vw,1.4rem);padding:14px 26px;border-radius:16px;text-align:center;transition:.4s cubic-bezier(.3,1.6,.5,1);box-shadow:0 0 60px #ffd36b55}
.toast.on{opacity:1;transform:translate(-50%,-50%) scale(1)}
.bar{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px}
.tools{display:flex;gap:10px;flex-wrap:wrap}
.tools button{display:flex;align-items:center;gap:8px;background:var(--panel);color:var(--fg);border:1px solid #ffffff1f;border-radius:14px;padding:7px 14px 7px 8px;font:inherit;font-size:.9rem;cursor:pointer;transition:transform .2s,border-color .2s}
.tools button:hover{transform:translateY(-2px);border-color:var(--cy)}
.tools img{width:34px;height:34px}
.right{display:flex;align-items:center;gap:14px}
.count{color:var(--dim);font-size:.9rem}.count b{color:var(--go)}
.music{--p:0;position:relative;overflow:hidden;background:linear-gradient(90deg,#ffd36b55 calc(var(--p)*100%),transparent 0),var(--go);color:#2a1f05;border:0;border-radius:14px;padding:11px 20px;font:inherit;font-weight:700;cursor:pointer;box-shadow:0 6px 26px #ffd36b40}
.music.on{background:var(--panel);color:var(--go);box-shadow:inset 0 0 0 1px var(--go)}
.help{color:#6f7699;font-size:.82rem;margin-top:12px}

/* come si gioca */
.steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:34px;counter-reset:s}
.steps li{position:relative;background:var(--panel);border:1px solid #ffffff12;border-radius:18px;padding:22px 18px}
.steps li b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#4fe3ff22;color:var(--cy);font-weight:800;margin-bottom:12px}
.steps li:nth-child(2) b{background:#b57cff22;color:var(--vi)}.steps li:nth-child(3) b{background:#ffd36b22;color:var(--go)}.steps li:nth-child(4) b{background:#ff6fa822;color:var(--pk)}.steps li:nth-child(5) b{background:#4fe3ff22;color:var(--cy)}
.steps h3{font-size:1.02rem;margin-bottom:6px}.steps p{color:var(--dim);font-size:.92rem}
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px}
.nums div{border-top:1px solid #ffffff1a;padding-top:14px}
.nums b{display:block;font-size:clamp(2rem,4.5vw,3.2rem);line-height:1;background:linear-gradient(90deg,var(--cy),var(--vi));-webkit-background-clip:text;background-clip:text;color:transparent}
.nums span{color:var(--dim);font-size:.92rem}

/* strumenti */
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-top:30px}
.tool{position:relative;background:var(--panel);border:1px solid #ffffff12;border-radius:18px;padding:18px;transition:transform .25s,border-color .25s}
.tool:hover{transform:translateY(-4px) rotate(-1deg);border-color:#4fe3ff55}
.tool img{width:58px;height:58px;margin-bottom:10px;transition:transform .6s}.tool:hover img{transform:rotate(90deg)}
.tool h3{font-size:1.05rem}.tool p{color:var(--dim);font-size:.9rem}
.tool.live::after{content:"▶";position:absolute;top:14px;right:16px;color:var(--go);font-size:.8rem}

/* immagini */
.rail{scrollbar-color:#2a2648 transparent;scrollbar-width:thin;display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding:30px 4px 18px;margin-top:4px}
.rail figure{flex:0 0 min(230px,62vw);scroll-snap-align:start;border-radius:26px}
.rail figure img{width:100%;height:auto}
.rail figcaption{background:#100e19;color:var(--dim);font-size:.82rem;padding:10px 14px}
.video{margin:34px auto 0;border-radius:30px;overflow:hidden;border:5px solid #24203a;background:#000;width:min(300px,78vw);box-shadow:0 30px 80px #000a,0 0 70px #4fe3ff22}
.video video{width:100%;display:block}
.extra-t{margin-top:44px;font-size:1.3rem}

footer{display:flex;justify-content:space-between;padding:26px 5vw max(26px,env(safe-area-inset-bottom));margin-top:10vh;color:var(--dim);font-size:.85rem;border-top:1px solid #ffffff14}

@media(max-width:900px){
  .links>a{display:none}
  .hero{grid-template-columns:1fr;padding-top:90px;text-align:left}
  .hero-phone{width:min(220px,60vw)}
  .stage{height:78vh;min-height:460px}
  .steps{grid-template-columns:1fr 1fr}
  .nums{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){.steps{grid-template-columns:1fr}.bar{flex-direction:column;align-items:stretch}.right{justify-content:space-between}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-phone{animation:none}}