:root{--paper:#fafaf8;--grid:#e9e8e2;--ink:#1c2025;--muted:#5a6069;--select:#1e66f5;--select-soft:#1e66f514;--card-border:#d9d8d0;--font-cover:"Noto Sans SC", "PingFang SC", "Microsoft YaHei", "PingFang TC", "Microsoft JhengHei", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Noto Sans Hebrew", "Arial Hebrew", "Geeza Pro", "Noto Sans Arabic", "Segoe UI";--font-display:"Space Grotesk", "Avenir Next", var(--font-cover), sans-serif;--font-body:"IBM Plex Sans", "Helvetica Neue", var(--font-cover), sans-serif;--font-mono:"IBM Plex Mono", ui-monospace, var(--font-cover), monospace;--header-height:58px}*{box-sizing:border-box}html,body{margin:0}body{font-family:var(--font-body);color:var(--ink);background:var(--paper);background-image:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);background-size:48px 48px;font-size:16px;line-height:1.6}a{color:var(--select)}a:focus-visible,button:focus-visible{outline:2px solid var(--select);outline-offset:2px}.site-header{z-index:20;height:var(--header-height);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--card-border);background:#fafaf8e0;justify-content:space-between;align-items:center;gap:16px;padding:0 clamp(16px,4vw,40px);display:flex;position:sticky;top:0}.site-brand{color:var(--ink);flex:none;align-items:center;gap:10px;text-decoration:none;display:inline-flex}.site-brand__glyph{width:18px;height:18px;color:var(--select)}.site-brand__name{font-family:var(--font-display);letter-spacing:-.03em;font-size:16px;font-weight:700}.site-brand__stage{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);border:1px solid var(--card-border);border-radius:999px;padding:1px 8px;font-size:10px}.site-nav{scrollbar-width:none;align-items:center;gap:clamp(8px,2vw,24px);min-width:0;display:flex;overflow-x:auto}.site-nav::-webkit-scrollbar{display:none}.lang{position:relative}.lang__summary{border:1px solid var(--card-border);color:var(--muted);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:6px;align-items:center;gap:6px;padding:4px 8px;font-size:13px;list-style:none;display:inline-flex}.lang__summary::-webkit-details-marker{display:none}.lang__summary:hover{color:var(--ink);border-color:var(--ink)}.lang[open] .lang__summary{color:var(--select);border-color:var(--select)}.lang__glyph{flex:none;width:14px;height:14px}.lang__menu{inset-inline-end:0;z-index:30;border:1px solid var(--card-border);background:#fff;border-radius:8px;min-width:168px;margin:0;padding:6px;list-style:none;position:absolute;top:calc(100% + 6px);box-shadow:0 8px 24px #1c202524}.lang__option{color:var(--ink);border-radius:5px;padding:6px 10px;font-size:14px;text-decoration:none;display:block}.lang__option:hover{background:var(--select-soft)}.lang__option[aria-current=true]{color:var(--select);font-weight:600}.site-nav__link{color:var(--muted);padding:4px 2px;font-size:14px;font-weight:500;text-decoration:none}.site-nav__link:hover{color:var(--ink)}.site-nav__link[aria-current=page]{color:var(--select);border-bottom:2px solid var(--select)}.hero{min-height:calc(88vh - var(--header-height));align-items:center;display:flex;position:relative;overflow:hidden}.hero__canvas{width:100%;height:100%;position:absolute;inset:0}.hero__scrim{pointer-events:none;background:radial-gradient(at 42%,#fafaf873,#0000 70%);position:absolute;inset:0}.hero__inner{width:min(1080px,100% - clamp(32px,8vw,80px));margin:clamp(48px,8vh,96px) auto;position:relative}.hero__brand{color:var(--select);align-items:center;gap:12px;margin:0 0 22px;display:inline-flex}.hero__brand-mark{width:36px;height:36px}.hero__brand-wordmark{font-family:var(--font-display);letter-spacing:-.03em;color:var(--ink);font-size:22px;font-weight:700}.artifact-card{border:2px solid var(--select);background:#fffffff0;border-radius:4px;padding:clamp(28px,5vw,56px);position:relative;box-shadow:0 12px 48px #1c20251a}.artifact-card__handle{border:2px solid var(--select);background:#fff;width:10px;height:10px;position:absolute}.artifact-card__handle--nw{top:-6px;left:-6px}.artifact-card__handle--ne{top:-6px;right:-6px}.artifact-card__handle--sw{bottom:-6px;left:-6px}.artifact-card__handle--se{bottom:-6px;right:-6px}.artifact-card__frame-label{top:-30px;font-family:var(--font-mono);color:var(--select);background:var(--select-soft);white-space:nowrap;border-radius:3px;margin:0;padding:2px 8px;font-size:11px;position:absolute;inset-inline-start:-2px}h1{font-family:var(--font-display);letter-spacing:-.025em;max-width:18ch;margin:0 0 20px;font-size:clamp(30px,5vw,52px);font-weight:700;line-height:1.08}.hero__lede{color:var(--muted);max-width:58ch;margin:0 0 24px;font-size:clamp(16px,2vw,18px)}.hero__equation{font-family:var(--font-mono);color:var(--ink);margin:0 0 32px;font-size:clamp(12px,1.6vw,14px);line-height:2.1}.eq-term{background:hsl(var(--chip,210) 60% 92%);border:1px solid hsl(var(--chip,210) 40% 80%);white-space:nowrap;border-radius:4px;padding:2px 8px}.eq-term--kw{background:var(--ink);border-color:var(--ink);color:var(--paper);font-weight:500}.eq-term--opt{color:var(--muted);background:0 0;border-style:dashed;border-color:#c4c3bb}.hero__actions{flex-wrap:wrap;gap:12px;display:flex}.button{font-family:var(--font-body);border-radius:6px;padding:10px 22px;font-size:15px;font-weight:600;text-decoration:none;transition:transform .12s,box-shadow .12s;display:inline-block}.button--primary{background:var(--select);color:#fff;box-shadow:0 2px 10px #1e66f559}.button--primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px #1e66f566}.button--ghost{color:var(--ink);border:1px solid var(--card-border);background:#ffffffb3}.button--ghost:hover{border-color:var(--ink)}.section{border-top:1px solid var(--card-border);width:min(1080px,100% - clamp(32px,8vw,80px));margin:0 auto;padding:clamp(56px,9vh,104px) 0}.eyebrow{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.14em;color:var(--select);margin:0 0 12px;font-size:12px}h2{font-family:var(--font-display);letter-spacing:-.02em;max-width:26ch;margin:0 0 14px;font-size:clamp(24px,3.4vw,34px);font-weight:700;line-height:1.15}.section__lede{color:var(--muted);max-width:64ch;margin:0 0 32px}.lifecycle{font-family:var(--font-mono);border:1px solid var(--card-border);background:#fffc;border-radius:8px;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:28px;padding:18px 22px;font-size:14px;display:flex}.lifecycle__state{border:1px solid var(--card-border);background:#fff;border-radius:5px;padding:4px 12px}.lifecycle__state--paint{background:#f1e7f9;border-color:#c4a6d9}.lifecycle__state--live{border-color:var(--select);background:var(--select-soft);color:var(--select);font-weight:500}.lifecycle__arrow{color:var(--muted)}.lifecycle__note{color:var(--muted);text-align:start;flex-basis:100%;font-size:12px}.boundary{border:1px solid var(--card-border);background:#fffc;border-radius:8px;flex-wrap:wrap;gap:10px;margin-bottom:28px;padding:16px 20px;display:flex}.boundary__pair{font-family:var(--font-mono);border:1px solid var(--card-border);border-radius:5px;align-items:stretch;font-size:12px;display:inline-flex;overflow:hidden}.boundary__kind{color:var(--ink);background:#fff;padding:4px 9px}.boundary__reason{color:#93531a;background:#fef1e7;border-inline-start:1px dashed #e0af85;padding:4px 9px}.facts{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin:0;padding:0;list-style:none;display:grid}.facts li{border:1px solid var(--card-border);color:var(--muted);background:#fffc;border-radius:8px;padding:18px 20px;font-size:15px}.facts strong{color:var(--ink);margin-bottom:6px;display:block}.package-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;display:grid}.package{border:1px solid var(--card-border);background:#fffc;border-radius:8px;padding:16px 18px;transition:border-color .12s}.package:hover{border-color:var(--select)}.package__name{font-family:var(--font-mono);margin:0 0 6px;font-size:14px;font-weight:500}.package__role{color:var(--muted);margin:0;font-size:14px}.section--status{padding-bottom:clamp(72px,10vh,120px)}.site-footer{border-top:1px solid var(--card-border);font-family:var(--font-mono);color:var(--muted);background:#fff9;align-items:center;gap:10px;padding:24px clamp(16px,4vw,40px);font-size:13px;display:flex}.site-footer p{margin:0}.site-footer__mark{flex:none;display:block}.page--doc{background-image:none}.doc{width:min(820px,100% - 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var(--header-height))}.playground-shell__frame{border:0;width:100%;height:100%;display:block}@media (width<=640px){.site-header{gap:12px}.site-nav{justify-content:flex-end;overflow:visible}.site-nav__link:not([aria-current=page]),.site-brand__stage{display:none}.hero{min-height:auto}}@media (prefers-reduced-motion:reduce){.button{transition:none}}