:root{--bg: #ffffff;--surface: #ffffff;--surface-2: #f5f5f6;--border: #e9e9ec;--border-strong: #d6d6da;--text: #18181b;--text-secondary: #52525b;--text-muted: #8e8e96;--accent: #0d9488;--accent-hover: #0b7d73;--accent-soft: #e7f5f3}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:15.5px;line-height:1.7;color:var(--text-secondary);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.page-header{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--border);background:var(--bg)}.page-header .inner{max-width:72rem;margin:0 auto;min-height:60px;padding:10px max(1.5rem,env(safe-area-inset-left));display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem 1.25rem}@media(min-width:768px){.page-header .inner{flex-wrap:nowrap;height:60px;padding-top:0;padding-bottom:0}}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:600;color:var(--text);text-decoration:none;font-size:15px;letter-spacing:-.01em;white-space:nowrap}.brand:hover{text-decoration:none}.brand svg{display:block}.nav-details{margin-left:auto}.nav-details summary{list-style:none}.nav-details summary::-webkit-details-marker{display:none}.nav-burger{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--border);border-radius:8px;color:var(--text-secondary);cursor:pointer;background:var(--surface)}.nav-burger .icon-close{display:none}.nav-details[open] .nav-burger{position:relative;z-index:62}.nav-details[open] .nav-burger .icon-open{display:none}.nav-details[open] .nav-burger .icon-close{display:block}.nav-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:#18181b59;animation:backdrop-in .16s ease both}@keyframes backdrop-in{0%{opacity:0}to{opacity:1}}@keyframes drawer-in{0%{transform:translate(100%)}to{transform:none}}.nav-drawer{position:fixed;top:0;right:0;bottom:0;z-index:61;display:flex;flex-direction:column;width:min(80vw,320px);padding:76px 20px calc(20px + env(safe-area-inset-bottom));background:var(--surface);border-left:1px solid var(--border);box-shadow:0 2px 6px #18181b12,0 12px 32px #18181b2e;animation:drawer-in .24s cubic-bezier(.16,1,.3,1) both}.nav-drawer a{color:var(--text);text-decoration:none;padding:13px 16px;margin:4px 0;border-radius:10px;text-align:center;font-size:17px;font-weight:500;transition:background .12s ease,color .12s ease}.nav-drawer a:hover,.nav-drawer a:active{text-decoration:none;background:var(--accent-soft);color:var(--accent)}.nav-drawer a.active{background:var(--accent-soft);color:var(--accent);font-weight:600}.page-nav{display:none;align-items:center;gap:1.75rem;font-size:13px}.page-nav a{color:var(--text-secondary);text-decoration:none}.page-nav a:hover{color:var(--text);text-decoration:none}.page-nav a.active{color:var(--accent);font-weight:600}@media(min-width:768px){.page-nav{display:flex}.nav-details{display:none}}main{max-width:47rem;margin:0 auto;padding:0 max(1.5rem,env(safe-area-inset-left)) 5rem}.eyebrow{margin:4rem 0 .9rem;font-size:11.5px;font-weight:600;letter-spacing:.13em;text-transform:uppercase;color:var(--accent)}h1{font-size:clamp(1.75rem,4vw,2.3rem);font-weight:600;letter-spacing:-.022em;color:var(--text);line-height:1.15;margin:0 0 1rem}.lede{font-size:1.1rem;line-height:1.65;color:var(--text-secondary);margin-bottom:2.5rem;padding-bottom:2.5rem;border-bottom:1px solid var(--border)}h2{font-size:1.25rem;font-weight:600;letter-spacing:-.012em;color:var(--text);margin:3rem 0 .9rem}h3{font-size:1rem;font-weight:600;color:var(--text);margin:1.75rem 0 .5rem}p{margin:0 0 1.05rem}a{color:var(--accent);text-decoration:none;font-weight:500}a:hover{text-decoration:underline}ul,ol{padding-left:1.4rem;margin:0 0 1.05rem}li{margin:.45rem 0}code{font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:.88em;background:var(--surface-2);border:1px solid var(--border);border-radius:5px;padding:1px 6px;color:var(--text)}.symbol-row{display:flex;gap:1.4rem;align-items:center;padding:1.1rem 1.25rem;border:1px solid var(--border);border-radius:12px;background:var(--surface);margin:0 0 .75rem;transition:border-color .14s ease,box-shadow .14s ease}.symbol-row:hover{border-color:var(--border-strong);box-shadow:0 1px 2px #18181b0d,0 4px 12px #18181b0d}.symbol-row svg{flex-shrink:0;width:92px;height:68px;color:var(--text);background:radial-gradient(circle,rgba(24,24,27,.08) 1px,transparent 1px);background-size:12px 12px;border-radius:8px;padding:4px}.symbol-row h3{margin:0 0 .3rem;font-size:.95rem}.symbol-row p{margin:0;font-size:13.5px;line-height:1.6}.open-tpl{display:inline-flex;align-items:center;gap:6px;margin:2px 0 1.75rem;padding:8px 16px;border:1px solid var(--border-strong);border-radius:8px;background:var(--surface);color:var(--accent);font-size:13px;font-weight:600;text-decoration:none;transition:border-color .12s ease,background .12s ease}.open-tpl:after{content:"→";font-weight:400}.open-tpl:hover{text-decoration:none;border-color:var(--accent);background:var(--accent-soft)}table{width:100%;border-collapse:separate;border-spacing:0;font-size:14px;margin:0 0 1.25rem;border:1px solid var(--border);border-radius:10px;overflow:hidden}th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border);vertical-align:top}tr:last-child td{border-bottom:none}th{color:var(--text);font-weight:600;background:var(--surface-2);font-size:12px;text-transform:uppercase;letter-spacing:.06em}figure.diagram{margin:1.25rem 0;padding:1rem;background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow-x:auto}figure.diagram svg{display:block;margin:0 auto;color:var(--text);max-width:100%}figure.diagram figcaption{margin-top:.6rem;font-size:13px;color:var(--text-muted);text-align:center}.page-footer{border-top:1px solid var(--border);padding:2rem 1.5rem;max-width:72rem;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:12.5px;color:var(--text-muted)}.page-footer a{color:var(--text-muted);font-weight:400}.page-footer a:hover{color:var(--text)}