:root{color-scheme:dark;--bg:#0D1524;--panel:#172437;--ink:#E8F1FC;--muted:#adc0d3;--cyan:#39D2B4;--line:#34536c}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 85% 0%,#17354c 0%,transparent 38%),#0D1524;color:var(--ink);font:16px/1.75 system-ui,-apple-system,Segoe UI,sans-serif}
a{color:#7cebd7}a:hover{color:white}a:focus-visible,button:focus-visible{outline:3px solid #39D2B4;outline-offset:3px}
.shell{width:min(1240px,calc(100% - 36px));margin:auto}.top{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}.brand{font-size:1.25rem;font-weight:800;text-decoration:none;color:white}.brand span{color:var(--cyan)}.top nav{display:flex;flex-wrap:wrap;gap:17px}.top nav a{text-decoration:none;color:#d4e6f3;font-size:.9rem}
.hero{padding:45px 0 22px}.eyebrow{color:var(--cyan);letter-spacing:.17em;text-transform:uppercase;font-size:.76rem;font-weight:800}h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.16;margin:12px 0 20px;max-width:930px}h2{font-size:1.55rem;line-height:1.3}h3{font-size:1.09rem}.lede{font-size:1.1rem;color:var(--muted);max-width:830px}
.ad{border:1px dashed #4c6c82;border-radius:13px;min-height:86px;display:flex;align-items:center;justify-content:center;color:#9db1c5;font-size:.78rem;text-align:center;margin:18px 0 28px;padding:15px}.ad.sidebar{min-height:170px}
.layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(290px,1fr);gap:24px;align-items:start}.article,.aside,.card{background:linear-gradient(145deg,rgba(23,36,55,.95),rgba(17,32,48,.92));border:1px solid #36576a;border-radius:18px;box-shadow:0 15px 45px #0004}.article{padding:clamp(19px,3vw,36px)}.aside{padding:23px;position:sticky;top:15px}.article section{margin-bottom:30px}.article p,.article li{color:#c8d9e8}.article li{margin-bottom:10px}.article code,.example{background:#0b1728;border:1px solid #32536b;border-radius:10px;padding:13px;overflow-wrap:anywhere;white-space:pre-wrap}.example{font: .9rem/1.7 ui-monospace,Consolas,monospace;color:#c9f7ec}
label{display:block;font-weight:700;font-size:.87rem;margin:14px 0 6px}textarea{width:100%;min-height:130px;resize:vertical;border:1px solid #4c7188;border-radius:10px;padding:13px;background:#0b1728;color:#e8f1fc;font:inherit}button{cursor:pointer;border:0;border-radius:10px;background:linear-gradient(110deg,#39D2B4,#3b9bdf);color:#051421;font-weight:800;padding:12px 18px;margin-top:10px}.status{font-size:.85rem;color:#b0dcd2}.cinematic-viewport{position:relative;min-height:155px;display:grid;place-items:center;border:1px solid #277a86;border-radius:14px;overflow:hidden;background:radial-gradient(circle at 50% 45%,#1c6c7a66,transparent 47%),repeating-linear-gradient(0deg,transparent 0 22px,#39d2b41a 23px 24px),repeating-linear-gradient(90deg,transparent 0 22px,#39d2b41a 23px 24px),#071725}.cinematic-viewport:before{content:"INPUT  →  STRUCTURE  →  REVIEW";letter-spacing:.08em;font-weight:800;color:#86fff0;text-shadow:0 0 15px #39d2b4}.related{display:flex;flex-wrap:wrap;gap:10px}.related a,.tile{display:block;padding:10px 14px;border:1px solid #396478;border-radius:10px;text-decoration:none;background:#0b1c2e}.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.tile h2{font-size:1.1rem;margin:4px 0}.tile p{color:#bbccda;font-size:.9rem;margin:0}footer{margin:40px 0;padding:25px 0;border-top:1px solid var(--line);color:#a9c1cf;font-size:.86rem}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;background:#fff;color:#000;z-index:10}
@media(max-width:850px){.layout{grid-template-columns:1fr}.aside{position:static}.top{align-items:flex-start;flex-direction:column}}@media(max-width:550px){.tiles{grid-template-columns:1fr}.shell{width:calc(100% - 24px)}.top nav{gap:10px}}

/* v79.2 consistent responsive navigation */
header nav[aria-label="Main navigation"],header nav[aria-label="Primary navigation"]{display:flex;flex-wrap:wrap;align-items:center;gap:clamp(7px,1.1vw,16px)}
header nav[aria-label="Main navigation"] a,header nav[aria-label="Primary navigation"] a{font-size:clamp(11px,.88vw,14px);white-space:nowrap;text-decoration:none}
header nav a[aria-current="page"]{color:#39D2B4!important}
@media(max-width:850px){header nav[aria-label="Main navigation"],header nav[aria-label="Primary navigation"]{gap:10px}header nav a{white-space:normal!important}}