:root{--ink: #0f1c18;--mint: #1f8a6d;--mint-soft: #7bc4a8;--sand: #e7f0eb;--panel: #f7fbf9;--line: rgba(15, 28, 24, .12);--muted: #5a736a;--warn: #b45309;--bg: #f2f6f4;--font: "IBM Plex Sans", system-ui, sans-serif;--display: "Fraunces", Georgia, serif;--mono: "IBM Plex Mono", ui-monospace, monospace}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:var(--font);color:var(--ink);background:radial-gradient(1200px 500px at 10% -10%,rgba(31,138,109,.12),transparent 55%),linear-gradient(180deg,#eef5f1 0%,var(--bg) 40%,#e8efeb 100%);line-height:1.55}a{color:var(--mint)}.shell{min-height:100vh;display:flex;flex-direction:column}.top{position:sticky;top:0;z-index:30;display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between;padding:12px 22px;background:#0f1c18f0;color:#f4fff9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.brand{display:flex;gap:10px;align-items:center;text-decoration:none;color:inherit}.brand strong{display:block;font-family:var(--display);font-size:1.05rem}.brand small{display:block;color:#9ad4be;font-size:.72rem}.mark{width:2rem;height:2rem;border-radius:10px;display:grid;place-items:center;background:var(--mint);font-weight:700}.nav{display:flex;flex-wrap:wrap;gap:8px 14px}.nav a{color:#cfe8dc;text-decoration:none;font-size:.9rem}.nav a.active,.nav a:hover{color:#fff}.top-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.lang-switch{position:relative}.lang-switch-btn{display:inline-flex;align-items:center;gap:4px;padding:5px 10px;border-radius:999px;border:1px solid rgba(244,255,249,.28);background:#f4fff914;color:#f4fff9;font:inherit;font-size:.78rem;font-weight:650;cursor:pointer}.lang-switch-btn:hover{background:#f4fff929}.lang-switch-code{letter-spacing:.04em}.lang-switch-caret{opacity:.7;font-size:.7rem}.lang-switch-menu{position:absolute;top:calc(100% + 6px);right:0;z-index:40;min-width:11rem;margin:0;padding:6px;list-style:none;border-radius:12px;background:#12241e;border:1px solid rgba(244,255,249,.14);box-shadow:0 12px 28px #00000059}.lang-switch-menu button{width:100%;display:flex;justify-content:space-between;gap:12px;padding:8px 10px;border:0;border-radius:8px;background:transparent;color:#e8f6ef;font:inherit;font-size:.85rem;cursor:pointer;text-align:start}.lang-switch-menu button:hover,.lang-switch-menu button.active{background:#1f8a6d59}html[dir=rtl] .lang-switch-menu{right:auto;left:0}.pill{font-size:.7rem;font-weight:700;letter-spacing:.04em;padding:4px 8px;border-radius:999px;background:#f4fff91f}.pill.warn{background:#f59e0b;color:#1c1405}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:999px;border:1px solid transparent;font:inherit;font-weight:600;text-decoration:none;cursor:pointer}.btn.primary{background:var(--mint);color:#fff}.btn.ghost{background:transparent;border-color:#ffffff59;color:#f4fff9}.page .btn.ghost,.section .btn.ghost,.lab-panel .btn.ghost{border-color:var(--line);color:var(--ink)}.page .btn.primary,.lab-panel .btn.primary{background:var(--mint);color:#fff}main{flex:1;width:min(1120px,calc(100% - 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