:root{--hub-bg: #faf8f3;--hub-bg-soft: #f3f0ea;--hub-surface: #ffffff;--hub-text: #0d0d0f;--hub-text-soft: #44464d;--hub-text-mute: #8a8c95;--hub-border: #e6e2d8;--hub-border-soft: #efece4;--hub-accent: #0a5cff;--hub-accent-soft: #e8f0ff;--hub-accent-dark: #0040bf;--hub-shadow-sm: 0 1px 2px rgba(13, 13, 15, .04);--hub-shadow: 0 6px 24px rgba(13, 13, 15, .05);--hub-shadow-lg: 0 18px 48px rgba(13, 13, 15, .08);--hub-radius: 14px;--hub-radius-lg: 20px;--hub-sidebar-w: 320px;--hub-header-h: 72px;--hub-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif}*{box-sizing:border-box}html{font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased}body{margin:0;padding:0;background:var(--hub-bg);color:var(--hub-text);font-family:var(--hub-font);font-size:16px;line-height:1.55}a{color:var(--hub-accent);text-decoration:none;transition:color .15s}a:hover{color:var(--hub-accent-dark)}img{max-width:100%;display:block}.hub-auth{max-width:460px;margin:12vh auto 0;background:var(--hub-surface);padding:3rem 2.5rem;border-radius:var(--hub-radius-lg);box-shadow:var(--hub-shadow);border:1px solid var(--hub-border-soft)}.hub-auth .brand-mark{display:inline-flex;align-items:center;gap:.55rem;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--hub-text-mute);margin-bottom:1.5rem;font-weight:600}.hub-auth .brand-mark:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--hub-accent)}.hub-auth h1{font-size:1.6rem;line-height:1.2;margin:0 0 .6rem;letter-spacing:-.01em;font-weight:600}.hub-auth p{color:var(--hub-text-soft);margin:0 0 1.5rem}.hub-auth input{width:100%;padding:.95rem 1.1rem;border:1px solid var(--hub-border);border-radius:12px;font-size:1rem;font-family:inherit;background:#fff;transition:border-color .15s,box-shadow .15s}.hub-auth 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.brand{display:inline-flex;align-items:center;gap:.65rem;font-weight:700;font-size:1rem;color:var(--hub-text);letter-spacing:-.01em}.hub-header .brand .logo-dot{width:10px;height:10px;border-radius:50%;background:var(--hub-accent)}.hub-header .badge-prepared{margin-left:auto;display:inline-flex;align-items:center;gap:.5rem;padding:.4rem .85rem .4rem .6rem;background:var(--hub-surface);border:1px solid var(--hub-border);border-radius:999px;font-size:.82rem;color:var(--hub-text-soft)}.hub-header .badge-prepared .dot{width:6px;height:6px;border-radius:50%;background:#0a8a4f}.hub-header .badge-prepared strong{color:var(--hub-text);font-weight:600}.hub-shell{display:grid;grid-template-columns:var(--hub-sidebar-w) 1fr;min-height:calc(100vh - var(--hub-header-h))}.hub-sidebar{background:transparent;border-right:1px solid var(--hub-border-soft);padding:2.5rem 1.5rem 2.5rem 2rem;position:sticky;top:var(--hub-header-h);height:calc(100vh - var(--hub-header-h));overflow-y:auto}.hub-sidebar .eyebrow{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--hub-text-mute);font-weight:600;margin-bottom:1.5rem}.hub-sidebar nav{display:flex;flex-direction:column;gap:.35rem}.hub-sidebar .nav-btn{display:flex;align-items:flex-start;gap:1rem;padding:.95rem 1rem;border-radius:12px;cursor:pointer;color:var(--hub-text-soft);font-weight:500;border:1px solid transparent;background:transparent;width:100%;text-align:left;font-size:.98rem;line-height:1.35;font-family:inherit;transition:background .15s,color .15s,border-color .15s,transform .05s}.hub-sidebar .nav-btn:hover{background:var(--hub-bg-soft);color:var(--hub-text)}.hub-sidebar .nav-btn[aria-current=true]{background:var(--hub-surface);color:var(--hub-text);border-color:var(--hub-border);box-shadow:var(--hub-shadow-sm);font-weight:600}.hub-sidebar .nav-btn .num{flex:0 0 1.65rem;font-variant-numeric:tabular-nums;font-size:.8rem;letter-spacing:.04em;color:var(--hub-text-mute);font-weight:600;padding-top:.1rem}.hub-sidebar .nav-btn[aria-current=true] .num{color:var(--hub-accent)}.hub-sidebar .nav-btn .label{flex:1}.hub-sidebar .nav-btn .label small{display:block;font-size:.8rem;color:var(--hub-text-mute);margin-top:.1rem;font-weight:400}.hub-sidebar .nav-btn[aria-current=true] .label small{color:var(--hub-text-soft)}.hub-sidebar .nav-btn .chevron{flex:0 0 12px;opacity:0;color:var(--hub-accent);transition:opacity .15s,transform .15s;align-self:center}.hub-sidebar .nav-btn[aria-current=true] .chevron{opacity:1;transform:translate(2px)}.hub-main{padding:clamp(2rem,4vw,4rem) clamp(1.5rem,5vw,5rem) 5rem;max-width:920px}.hub-main .eyebrow{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--hub-accent);font-weight:600;margin-bottom:.9rem}.hub-main h1{font-size:clamp(1.85rem,3vw,2.6rem);line-height:1.1;margin:0 0 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.35rem;font-size:1.22rem;line-height:1.3;letter-spacing:-.01em;font-weight:600}.hub-asset .desc{color:var(--hub-text-soft);margin:0 0 1.25rem;font-size:.98rem}.hub-asset .pdf-frame,.hub-asset .video-frame,.hub-asset .embed-frame{width:100%;aspect-ratio:16 / 10;border:0;border-radius:10px;background:#000;display:block}.hub-asset .pdf-frame{aspect-ratio:8.5 / 11;background:#ddd}.hub-asset .embed-frame{aspect-ratio:4 / 3;background:var(--hub-bg-soft)}.hub-asset .markdown{color:var(--hub-text);line-height:1.65}.hub-asset .markdown table{width:100%;border-collapse:collapse;font-size:.95rem;margin:1rem 0}.hub-asset .markdown th,.hub-asset .markdown td{border:1px solid var(--hub-border);padding:.65rem .85rem;text-align:left}.hub-asset .markdown th{background:var(--hub-bg-soft);font-weight:600}.hub-asset .markdown blockquote{border-left:3px solid var(--hub-accent);padding-left:1rem;color:var(--hub-text-soft);margin:1rem 0}.hub-asset .markdown h1,.hub-asset .markdown h2,.hub-asset .markdown 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