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.rail-title{font-family:var(--font-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2);margin:0 0 .9rem .2rem;font-size:.68rem}.app-dev-environment-page .rail{counter-reset:toc;margin:0;padding:0;list-style:none}.app-dev-environment-page .rail a{color:var(--muted);counter-increment:toc;border-left:2px solid #0000;border-radius:8px;align-items:baseline;gap:.7rem;padding:.42rem .5rem;line-height:1.4;display:flex}.app-dev-environment-page .rail a:before{content:counter(toc, decimal-leading-zero);font-family:var(--font-mono);color:var(--muted-2);flex:none;font-size:.72rem}.app-dev-environment-page .rail a:hover{color:var(--text);background:#a97bff14;text-decoration:none}.app-dev-environment-page .rail a.active{color:var(--text);border-left-color:var(--violet);background:#a97bff1f}.app-dev-environment-page .rail a.active:before{color:var(--violet)}.app-dev-environment-page main{min-width:0;padding-bottom:6rem}.app-dev-environment-page .wrap{max-width:var(--maxw)}.app-dev-environment-page .hero{padding:clamp(2.6rem,8vw,5rem) 0 2rem}.app-dev-environment-page .hero__eyebrow{font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--violet);align-items:center;gap:.6rem;margin-bottom:1.4rem;font-size:.74rem;display:inline-flex}.app-dev-environment-page .hero__eyebrow:before{content:"";background:var(--violet);width:28px;height:1px}.app-dev-environment-page .hero h1{font-family:var(--font-disp);letter-spacing:-.02em;margin:0 0 1.1rem;font-size:clamp(2.1rem,6vw,3.8rem);font-weight:800;line-height:1.14}.app-dev-environment-page .hero h1 .g1{color:var(--storage)}.app-dev-environment-page .hero h1 .g2{color:var(--iam)}.app-dev-environment-page .hero h1 .g3{color:var(--func)}.app-dev-environment-page .hero h1 .g4{color:var(--pubsub)}.app-dev-environment-page .hero__lead{font-family:var(--font-jp);color:var(--muted);max-width:62ch;margin:0 0 2rem;font-size:clamp(1rem,2.2vw,1.18rem);font-weight:500}.app-dev-environment-page .hero__meta{font-family:var(--font-mono);color:var(--muted-2);flex-wrap:wrap;gap:.6rem 1.4rem;font-size:.78rem;display:flex}.app-dev-environment-page .hero__meta b{color:var(--pubsub);font-weight:500}.app-dev-environment-page .rail-flow{border:1px solid var(--line);border-radius:var(--r);background:linear-gradient(180deg, var(--panel), var(--bg-2));grid-template-columns:repeat(5,1fr);gap:0;margin-top:2.8rem;display:grid;overflow:hidden}.app-dev-environment-page .rail__stop{border-right:1px solid var(--line);padding:1.3rem 1rem 1.2rem;position:relative}.app-dev-environment-page .rail__stop:last-child{border-right:none}.app-dev-environment-page .rail__stop:before{content:"";background:var(--c);opacity:.5;height:2px;position:absolute;top:2.55rem;left:1rem;right:-1px}.app-dev-environment-page .rail__stop:last-child:before{right:1rem}.app-dev-environment-page 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