:root{--ink:#14324a;--muted:#526776;--blue:#176f86;--dark:#10385b;--gold:#f2ad3b;--paper:#f5f8fa;--white:#fff;--line:#dbe5eb;--rail:248px}*{box-sizing:border-box}html{font-family:Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.58}body{margin:0}.rail{position:fixed;inset:0 auto 0 0;width:var(--rail);background:linear-gradient(160deg,var(--dark),#16566d);color:white;padding:26px 18px;overflow:auto;transition:transform .2s ease}.brand{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none;font-weight:700;font-size:1.08rem;margin:0 6px 28px}.brand img{width:44px;height:44px}.rail nav{display:grid;gap:4px}.rail nav a{color:#dcedf4;text-decoration:none;padding:10px 13px;border-radius:8px}.rail nav a:hover,.rail nav a.active{color:#fff;background:rgba(255,255,255,.14)}.rail-toggle{position:fixed;z-index:4;left:206px;top:12px;border:1px solid rgba(255,255,255,.35);background:#174b65;color:#fff;border-radius:7px;padding:7px 10px;cursor:pointer;transition:left .2s ease}main{margin-left:var(--rail);max-width:1180px;padding:46px 56px 30px;transition:margin-left .2s ease}body.rail-closed .rail{transform:translateX(-100%)}body.rail-closed .rail-toggle{left:12px}body.rail-closed main{margin-left:0}.page-head{border-bottom:1px solid var(--line);margin-bottom:28px;padding-bottom:22px}.page-head h1{font-size:clamp(2rem,4vw,3.15rem);line-height:1.08;margin:.15rem 0 .55rem;letter-spacing:-.035em}.page-head>p:last-child{max-width:780px;font-size:1.1rem;color:var(--muted);margin:0}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.76rem;font-weight:700;color:var(--blue)}section{background:var(--white);border:1px solid var(--line);border-radius:13px;padding:24px 28px;margin:0 0 20px;box-shadow:0 6px 24px rgba(16,56,91,.035)}h2{margin-top:0;font-size:1.45rem}h3{margin-top:0}.hero-card{display:grid;grid-template-columns:minmax(0,1fr) 220px;align-items:center;border-top:4px solid var(--gold)}.hero-card>img{width:180px;justify-self:end}.actions{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 9px}.button{display:inline-block;border:1px solid var(--blue);color:var(--blue);padding:10px 16px;border-radius:8px;text-decoration:none;font-weight:650}.button.primary{background:var(--blue);color:#fff}.button:hover{filter:brightness(.94)}.small{font-size:.86rem;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.cards article{background:#f7fafb;border:1px solid var(--line);border-radius:10px;padding:17px}.notice{border-left:5px solid var(--gold)}a{color:#0a607b}code,kbd,pre{font-family:Cascadia Mono,Consolas,monospace}code,kbd{background:#edf3f6;border-radius:4px;padding:.12em .35em}pre{background:#0f2d42;color:#e9f5f8;padding:17px;border-radius:9px;overflow:auto}dl{display:grid;grid-template-columns:170px minmax(0,1fr);gap:8px 18px}dt{font-weight:700}.parameters dt,.parameters dd{padding:9px 0;border-bottom:1px solid var(--line);margin:0}.faq details{border-bottom:1px solid var(--line);padding:12px 0}.faq summary{cursor:pointer;font-weight:700}.faq details p{color:var(--muted)}.hash{overflow-wrap:anywhere;font-family:Cascadia Mono,Consolas,monospace;background:#eef4f7;padding:9px;border-radius:6px}footer{color:var(--muted);font-size:.86rem;padding:14px 3px}@media(max-width:820px){.rail{transform:translateX(-100%)}.rail-toggle{left:12px}.rail.open{transform:none}.rail.open+.dummy{display:block}main{margin-left:0;padding:58px 20px 24px}.hero-card{grid-template-columns:1fr}.hero-card>img{display:none}.cards{grid-template-columns:1fr}dl{grid-template-columns:1fr}.parameters dd{padding-top:0}}