:root{--color-bg:#f8fafc;--color-surface:#fff;--color-surface-elevated:#fff;--color-surface-subtle:#f1f5f9;--color-border:#e2e8f0;--color-border-subtle:#f1f5f9;--color-text:#0f172a;--color-text-secondary:#475569;--color-text-muted:#64748b;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-soft:#eff6ff;--color-success:#16a34a;--color-success-soft:#f0fdf4;--color-success-border:#bbf7d0;--color-warning:#d97706;--color-warning-soft:#fffbeb;--color-warning-border:#fef3c7;--color-danger:#dc2626;--color-danger-soft:#fef2f2;--color-danger-border:#fecaca;--font-sans:-apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:"SF Mono", ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", monospace;--container:1120px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-full:9999px;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #00000012, 0 2px 4px -2px #0000000d;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -4px #00000008}*,:before,:after{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.65}h1,h2,h3,h4,h5,h6{color:var(--color-text);letter-spacing:-.02em;margin-top:0;margin-bottom:.6em;font-weight:700;line-height:1.25}h1{font-size:2.35rem}h2{font-size:1.75rem}h3{font-size:1.35rem}h4{font-size:1.1rem}p{margin-top:0;margin-bottom:1.25rem}a{color:var(--color-primary);text-decoration:none;transition:color .15s}a:hover{color:var(--color-primary-hover);text-decoration:underline}code{font-family:var(--font-mono);background:var(--color-surface-subtle);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:#0f172a;padding:.15em .4em;font-size:.88em}pre.code-block{color:#f8fafc;border-radius:var(--radius-md);font-family:var(--font-mono);background:#0f172a;margin:1.25rem 0;padding:1.25rem;font-size:.9rem;line-height:1.5;overflow-x:auto}pre.code-block code{color:inherit;background:0 0;border:none;padding:0}.container{width:100%;max-width:var(--container);margin-left:auto;margin-right:auto;padding-left:1.25rem;padding-right:1.25rem}.site-header{z-index:100;-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border);background:#ffffffe0;align-items:center;height:68px;display:flex;position:sticky;top:0}.site-header .container{justify-content:space-between;align-items:center;display:flex}.site-logo{color:var(--color-text);flex-shrink:1;align-items:center;gap:.75rem;min-width:0;text-decoration:none;display:flex}.site-logo:hover{text-decoration:none}.site-logo-mark{border-radius:8px;flex-shrink:0;box-shadow:0 2px 4px #0000001a}.site-logo-text{flex-direction:column;min-width:0;display:flex}.site-logo-title{letter-spacing:-.025em;color:var(--color-text);white-space:nowrap;font-size:1.18rem;font-weight:750;line-height:1.15;transition:color .15s}.site-logo:hover .site-logo-title{color:var(--color-primary)}.site-logo-subtitle{color:var(--color-text-muted);letter-spacing:.02em;white-space:nowrap;text-overflow:ellipsis;max-width:260px;margin-top:2px;font-size:.72rem;font-weight:500;line-height:1.25;overflow:hidden}.header-right{align-items:center;gap:1.5rem;display:flex}.site-nav{align-items:center;gap:1.25rem;display:flex}.site-nav a{color:var(--color-text-secondary);padding:.4rem .2rem;font-size:.94rem;font-weight:500;text-decoration:none;transition:color .15s}.site-nav a:hover{color:var(--color-primary);text-decoration:none}.header-meta{align-items:center;gap:.75rem;display:flex}.version-chip{background:var(--color-surface-subtle);border:1px solid var(--color-border);color:var(--color-text-secondary);font-family:var(--font-mono);border-radius:var(--radius-full);padding:.25rem .6rem;font-size:.8rem;font-weight:600;text-decoration:none}.version-chip:hover{color:var(--color-text);background:#e2e8f0;text-decoration:none}.github-button{color:#fff;border-radius:var(--radius-sm);background:#0f172a;align-items:center;gap:.4rem;padding:.4rem .8rem;font-size:.85rem;font-weight:600;text-decoration:none;transition:background .15s;display:inline-flex}.github-button:hover{color:#fff;background:#1e293b;text-decoration:none}.nav-toggle{cursor:pointer;background:0 0;border:none;flex-direction:column;justify-content:space-around;width:32px;height:32px;padding:4px;display:none}.nav-toggle-bar{background:var(--color-text);border-radius:2px;width:100%;height:2px;transition:all .2s}.mobile-menu{background:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-lg);flex-direction:column;gap:1.25rem;padding:1.5rem;display:flex;position:absolute;top:68px;left:0;right:0}.mobile-nav{flex-direction:column;gap:.85rem;display:flex}.mobile-nav a{color:var(--color-text);font-size:1.05rem;font-weight:600}.mobile-meta{border-top:1px solid var(--color-border);justify-content:space-between;align-items:center;padding-top:1rem;display:flex}.hero-section{background:linear-gradient(180deg, #fff 0%, var(--color-bg) 100%);border-bottom:1px solid var(--color-border);padding:4rem 0 3rem}.hero-pill-badge{background:var(--color-primary-soft);color:var(--color-primary);border-radius:var(--radius-full);border:1px solid #bfdbfe;align-items:center;gap:.5rem;margin-bottom:1.25rem;padding:.35rem .85rem;font-size:.82rem;font-weight:600;display:inline-flex}.hero-h1{letter-spacing:-.03em;max-width:860px;margin-bottom:1.2rem;font-size:2.85rem}.hero-lead{color:var(--color-text-secondary);max-width:780px;margin-bottom:2rem;font-size:1.2rem;line-height:1.6}.hero-cta-group{flex-wrap:wrap;align-items:center;gap:1rem;margin-bottom:2.5rem;display:flex}.hero-upstream-banner{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.25rem;display:flex}.hero-upstream-info{color:var(--color-text-secondary);align-items:center;gap:.75rem;font-size:.92rem;display:flex}.hero-upstream-info strong{color:var(--color-text)}.btn{border-radius:var(--radius-sm);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:.5rem;padding:.65rem 1.25rem;font-size:.95rem;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.btn:hover{text-decoration:none}.btn-lg{border-radius:var(--radius-md);padding:.85rem 1.65rem;font-size:1.02rem}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover);color:#fff;box-shadow:var(--shadow-sm)}.btn-secondary{color:#fff;background:#0f172a}.btn-secondary:hover{color:#fff;background:#1e293b}.btn-outline{background:var(--color-surface);border-color:var(--color-border);color:var(--color-text)}.btn-outline:hover{background:var(--color-surface-subtle);color:var(--color-text);border-color:#cbd5e1}.badge{border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.03em;align-items:center;padding:.25rem .55rem;font-size:.78rem;font-weight:600;display:inline-flex}.badge-success{background:var(--color-success-soft);color:var(--color-success);border:1px solid var(--color-success-border)}.badge-danger{background:var(--color-danger-soft);color:var(--color-danger);border:1px solid var(--color-danger-border)}.badge-warning{background:var(--color-warning-soft);color:var(--color-warning);border:1px solid var(--color-warning-border)}.badge-accent{background:var(--color-primary-soft);color:var(--color-primary);border:1px solid #bfdbfe}.badge-neutral{background:var(--color-surface-subtle);color:var(--color-text-secondary);border:1px solid var(--color-border)}.status-pill{border-radius:var(--radius-full);align-items:center;padding:.25rem .65rem;font-size:.78rem;font-weight:700;display:inline-flex}.status-verified{background:var(--color-success-soft);color:var(--color-success);border:1px solid var(--color-success-border)}.status-needs-review,.status-researching{background:var(--color-warning-soft);color:var(--color-warning);border:1px solid var(--color-warning-border)}.meta-tag{color:var(--color-text-muted);font-size:.8rem}.breadcrumb{background:0 0;padding:1rem 0 .5rem;font-size:.86rem}.breadcrumb ol{flex-wrap:wrap;align-items:center;gap:.5rem;margin:0;padding:0;list-style:none;display:flex}.breadcrumb li{color:var(--color-text-muted);align-items:center;gap:.5rem;display:flex}.breadcrumb li:not(:last-child):after{content:"/";color:#94a3b8}.breadcrumb a{color:var(--color-text-secondary);text-decoration:none}.breadcrumb a:hover{color:var(--color-primary);text-decoration:underline}.section-block{padding:3.5rem 0}.section-header-row{margin-bottom:2rem}.section-title{margin-bottom:.4rem;font-size:1.85rem}.section-subtitle{color:var(--color-text-secondary);margin-bottom:0;font-size:1.05rem}.grid-3{grid-template-columns:repeat(3,1fr);gap:1.5rem;display:grid}.grid-2{grid-template-columns:repeat(2,1fr);gap:1.5rem;display:grid}.grid-4{grid-template-columns:repeat(4,1fr);gap:1.25rem;display:grid}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);flex-direction:column;padding:1.5rem;transition:transform .15s,box-shadow .15s;display:flex}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.card-icon{margin-bottom:.85rem;font-size:1.85rem;line-height:1}.card-title{margin-bottom:.5rem;font-size:1.2rem}.card-desc{color:var(--color-text-secondary);flex-grow:1;margin-bottom:1.25rem;font-size:.92rem;line-height:1.55}.card-link{color:var(--color-primary);align-items:center;gap:.25rem;font-size:.9rem;font-weight:600;display:inline-flex}.download-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin:2rem 0;padding:2.25rem}.download-badge-row{flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:.75rem;display:flex}.download-card-title{margin-bottom:.25rem;font-size:1.85rem}.download-card-meta{color:var(--color-text-muted);margin-bottom:1.5rem;font-size:.9rem}.download-requirements{background:var(--color-surface-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);margin-bottom:1.75rem;padding:1.25rem}.download-requirements h3{text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary);margin-bottom:.6rem;font-size:1rem}.download-requirements ul{margin:0;padding-left:1.25rem}.download-requirements li{color:var(--color-text-secondary);margin-bottom:.35rem;font-size:.92rem}.download-actions{flex-wrap:wrap;align-items:center;gap:1rem;margin-bottom:1.75rem;display:flex}.download-trust-notice{background:var(--color-success-soft);border:1px solid var(--color-success-border);border-radius:var(--radius-md);color:#14532d;align-items:flex-start;gap:.75rem;padding:1rem 1.25rem;font-size:.88rem;line-height:1.5;display:flex}.notice-icon{font-size:1.25rem;line-height:1}.issue-source-card{border:1px solid var(--color-border);border-left:4px solid var(--color-primary);border-radius:var(--radius-md);background:#f8fafc;margin:1.75rem 0;padding:1.5rem}.issue-header{justify-content:space-between;align-items:center;margin-bottom:.6rem;display:flex}.issue-tag{font-family:var(--font-mono);color:var(--color-primary);font-size:.85rem;font-weight:700}.issue-status-badge{background:var(--color-success-soft);border:1px solid var(--color-success-border);color:var(--color-success);border-radius:var(--radius-full);padding:.2rem .5rem;font-size:.75rem;font-weight:700}.issue-title{margin-bottom:.4rem;font-size:1.2rem}.issue-desc{color:var(--color-text-secondary);margin-bottom:1rem;font-size:.92rem}.issue-footer{border-top:1px solid #e2e8f0;justify-content:space-between;align-items:center;padding-top:.75rem;font-size:.85rem;display:flex}.issue-date{color:var(--color-text-muted)}.issue-link{color:var(--color-primary);font-weight:600}.troubleshooting-steps-list{flex-direction:column;gap:1.25rem;margin:1.75rem 0;display:flex}.troubleshooting-step{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);align-items:flex-start;gap:1.25rem;padding:1.5rem;display:flex}.step-badge-col{flex-shrink:0}.step-number{border-radius:var(--radius-full);background:var(--color-primary);color:#fff;justify-content:center;align-items:center;width:34px;height:34px;font-size:1rem;font-weight:700;display:flex}.step-body{flex-grow:1}.step-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;margin-bottom:.5rem;display:flex}.step-title{margin-bottom:0;font-size:1.15rem}.step-reversible-badge{color:#15803d;border-radius:var(--radius-sm);text-transform:uppercase;background:#f0fdf4;border:1px solid #bbf7d0;padding:.15rem .5rem;font-size:.72rem;font-weight:700}.step-instruction{color:var(--color-text-secondary);margin-bottom:.85rem;font-size:.95rem;line-height:1.6}.step-outcome{background:var(--color-surface-subtle);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#0369a1;border-left:3px solid #0284c7;padding:.65rem .9rem;font-size:.88rem}.callout-note{border-radius:var(--radius-md);gap:1rem;margin:1.5rem 0;padding:1.25rem;line-height:1.55;display:flex}.callout-indicator{font-size:1.35rem;line-height:1}.callout-body{flex-grow:1;font-size:.93rem}.callout-info{background:var(--color-primary-soft);color:#1e3a8a;border:1px solid #bfdbfe}.callout-warning{background:var(--color-warning-soft);border:1px solid var(--color-warning-border);color:#78350f}.callout-danger{background:var(--color-danger-soft);border:1px solid var(--color-danger-border);color:#7f1d1d}.article-page{padding-bottom:4rem}.article-header{background:linear-gradient(180deg, #fff 0%, var(--color-bg) 100%);border-bottom:1px solid var(--color-border);padding:2.5rem 0 2rem}.article-meta-badges{flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:1rem;display:flex}.article-h1{margin-bottom:.75rem;font-size:2.35rem}.article-lead{color:var(--color-text-secondary);max-width:820px;margin-bottom:0;font-size:1.15rem;line-height:1.6}.article-layout-grid{margin-top:2rem;display:block}.article-main-content{max-width:840px}.article-body{color:#1e293b;font-size:1.05rem;line-height:1.75}.article-body p{margin-bottom:1.5rem}.section-heading{border-bottom:1px solid var(--color-border);margin-top:2.5rem;margin-bottom:1rem;padding-bottom:.4rem}.article-list{margin-bottom:1.5rem;padding-left:1.5rem}.article-list li{margin-bottom:.5rem}.toc-box{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin-bottom:2rem;padding:1.25rem 1.5rem}.toc-title{text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);margin-bottom:.75rem;font-size:1rem}.toc-list{margin:0;padding-left:1.25rem}.toc-list li{margin-bottom:.35rem;font-size:.92rem}.source-references-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin:3rem 0 2rem;padding:1.75rem}.source-card-header{justify-content:space-between;align-items:center;margin-bottom:.5rem;display:flex}.source-card-title{margin-bottom:0;font-size:1.25rem}.source-card-note{color:var(--color-text-secondary);margin-bottom:1.25rem;font-size:.9rem}.source-metadata-grid{border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);flex-wrap:wrap;gap:2rem;margin-bottom:1.25rem;padding:.75rem 0;font-size:.88rem;display:flex}.source-meta-label{color:var(--color-text-muted);font-weight:600}.source-meta-val{color:var(--color-text);font-weight:500}.source-links-section h4{color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.04em;margin-bottom:.5rem;font-size:.92rem}.source-links-list{margin:0 0 1.25rem;padding:0;list-style:none}.source-links-list li{margin-bottom:.35rem}.source-ext-link{font-family:var(--font-mono);font-size:.85rem}.source-disclaimer-box{background:var(--color-surface-subtle);border-radius:var(--radius-sm);color:var(--color-text-muted);padding:.65rem .85rem}.related-articles-section{margin:3rem 0 1.5rem}.related-title{margin-bottom:1.25rem;font-size:1.4rem}.related-grid{grid-template-columns:repeat(2,1fr);gap:1.25rem;display:grid}.related-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);flex-direction:column;padding:1.25rem;text-decoration:none;transition:transform .15s,box-shadow .15s,border-color .15s;display:flex}.related-card:hover{box-shadow:var(--shadow-sm);border-color:#cbd5e1;text-decoration:none;transform:translateY(-2px)}.related-card-category{color:var(--color-primary);text-transform:uppercase;letter-spacing:.04em;margin-bottom:.35rem;font-size:.75rem;font-weight:700}.related-card-title{margin-bottom:.4rem;font-size:1.05rem}.related-card-desc{color:var(--color-text-secondary);flex-grow:1;margin-bottom:.85rem;font-size:.88rem;line-height:1.45}.related-card-more{color:var(--color-primary);font-size:.85rem;font-weight:600}.faq-list{flex-direction:column;gap:1rem;display:flex}.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:1.5rem}.faq-question{margin-bottom:.6rem;font-size:1.15rem}.faq-answer{color:var(--color-text-secondary);margin-bottom:0;font-size:.96rem;line-height:1.6}.site-footer{color:#94a3b8;background:#0f172a;border-top:1px solid #1e293b;margin-top:4rem;padding:4rem 0 2rem}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:2rem;margin-bottom:3rem;display:grid}.footer-brand-title{color:#fff;margin-bottom:.5rem;font-size:1.35rem}.footer-brand-desc{color:#94a3b8;margin-bottom:1.25rem;font-size:.9rem;line-height:1.5}.footer-upstream-badge{color:#cbd5e1;font-size:.85rem}.footer-upstream-badge a{color:#38bdf8;font-family:var(--font-mono)}.site-footer h3{color:#f8fafc;text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem;font-size:.95rem}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li{margin-bottom:.5rem}.site-footer a{color:#94a3b8;font-size:.9rem;text-decoration:none;transition:color .15s}.site-footer a:hover{color:#fff;text-decoration:none}.footer-bottom{color:#64748b;border-top:1px solid #1e293b;padding-top:2rem;font-size:.82rem;line-height:1.6}.footer-disclaimer{margin-bottom:1rem}.footer-disclaimer strong{color:#cbd5e1}.footer-copyright{color:#64748b}@media (max-width:992px){.footer-grid,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.site-header{height:60px}.site-logo{gap:.6rem}.site-logo-mark{width:30px;height:30px}.site-logo-title{letter-spacing:-.02em;font-size:1.05rem}.site-logo-subtitle{letter-spacing:.01em;max-width:210px;font-size:.68rem}.site-nav,.header-meta{display:none}.nav-toggle{display:flex}.mobile-menu{top:60px}.hero-h1{font-size:2.15rem}.hero-lead{font-size:1.05rem}.grid-2,.grid-3,.grid-4,.related-grid,.footer-grid{grid-template-columns:1fr}.download-actions{flex-direction:column;align-items:stretch}.download-actions .btn{width:100%}}@media (max-width:480px){.site-logo-title{font-size:1rem}.site-logo-subtitle{max-width:165px;font-size:.64rem}}@media (max-width:375px){.site-logo-subtitle{max-width:130px}}