:root{--yt-primary:#1e40af;--yt-secondary:#64748b;--yt-accent:#0ea5e9;--yt-bg:#fff;--yt-fg:#0f172a;--yt-muted:#64748b;--yt-border:#e2e8f0;--yt-font-heading:"Noto Sans SC",system-ui,sans-serif;--yt-font-body:"Noto Sans SC",system-ui,sans-serif;--yt-radius:8px;--yt-header-bg:#fff}*{box-sizing:border-box}.yt-site{margin:0;color:var(--yt-fg);background:var(--yt-bg);font-family:var(--yt-font-body);line-height:1.6}.yt-site h1,.yt-site h2,.yt-site h3{font-family:var(--yt-font-heading);line-height:1.25;margin:0 0 .75rem}.yt-container{width:min(1120px,92%);margin:0 auto}.yt-section{padding:4rem 0}.yt-btn{display:inline-block;padding:.75rem 1.35rem;border-radius:var(--yt-radius);background:var(--yt-primary);color:#fff;text-decoration:none;border:none;cursor:pointer;font-weight:600}.yt-btn-secondary{background:transparent;color:var(--yt-primary);border:1px solid var(--yt-primary)}.yt-grid-3{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.yt-card{border:1px solid var(--yt-border);border-radius:var(--yt-radius);padding:1.25rem;background:#fff}.yt-muted{color:var(--yt-muted)}.yt-header{background:var(--yt-header-bg);border-bottom:1px solid var(--yt-border);padding:1rem 0}.yt-header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem}.yt-nav{display:flex;gap:1.25rem;flex-wrap:wrap}.yt-nav a{color:var(--yt-fg);text-decoration:none;font-size:.95rem}.yt-footer{border-top:1px solid var(--yt-border);padding:2.5rem 0;margin-top:2rem;color:var(--yt-muted);font-size:.9rem}.yt-hero{padding:5rem 0 4rem;background:linear-gradient(135deg,color-mix(in srgb,var(--yt-primary) 12%,#fff),#fff 60%)}.yt-hero h1{font-size:clamp(1.8rem,4vw,3rem);max-width:18em}.yt-cta-strip{background:var(--yt-primary);color:#fff;padding:2.5rem 0;text-align:center}.yt-cta-strip .yt-btn{background:#fff;color:var(--yt-primary);margin-top:1rem}.yt-faq details{border-bottom:1px solid var(--yt-border);padding:.85rem 0}.yt-faq summary{cursor:pointer;font-weight:600}.yt-article{max-width:720px;margin:0 auto;padding:3rem 0}.yt-article-body p{margin:0 0 1rem}.yt-pagination{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:2rem}.yt-page-link,.yt-pagination{align-items:center;justify-content:center}.yt-page-link{display:inline-flex;min-width:2.25rem;height:2.25rem;padding:0 .65rem;border-radius:var(--yt-radius);border:1px solid var(--yt-border);color:var(--yt-fg);text-decoration:none;font-size:.9rem;background:#fff}.yt-page-link:hover{border-color:var(--yt-primary);color:var(--yt-primary)}.yt-page-link.is-active{background:var(--yt-primary);border-color:var(--yt-primary);color:#fff;font-weight:600}.yt-page-link.is-disabled{opacity:.4;pointer-events:none}.yt-page-ellipsis{color:var(--yt-muted);padding:0 .25rem}.yt-cs-toggle{position:absolute;opacity:0;pointer-events:none}.yt-cs-fab{position:fixed;right:1.25rem;bottom:1.5rem;z-index:90;display:inline-flex;align-items:center;gap:.45rem;padding:.75rem 1.1rem;border-radius:999px;background:var(--yt-primary);color:#fff;font-size:.95rem;font-weight:600;box-shadow:0 8px 24px color-mix(in srgb,var(--yt-primary) 40%,transparent);cursor:pointer;user-select:none;transition:transform .15s ease,box-shadow .15s ease}.yt-cs-fab:hover{transform:translateY(-2px);box-shadow:0 12px 28px color-mix(in srgb,var(--yt-primary) 45%,transparent)}.yt-cs-fab-icon{font-size:1.05rem;line-height:1}.yt-cs-backdrop{inset:0;z-index:95;background:rgba(15,23,42,.45);transition:opacity .2s ease}.yt-cs-backdrop,.yt-cs-panel{position:fixed;opacity:0;pointer-events:none}.yt-cs-panel{z-index:100;right:1.25rem;bottom:5rem;width:min(320px,calc(100vw - 2rem));background:#fff;border-radius:calc(var(--yt-radius) + 4px);border:1px solid var(--yt-border);box-shadow:0 16px 48px rgba(15,23,42,.18);transform:translateY(12px) scale(.98);transition:opacity .2s ease,transform .2s ease}.yt-cs-toggle:checked~.yt-cs-backdrop{opacity:1;pointer-events:auto}.yt-cs-toggle:checked~.yt-cs-panel{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}.yt-cs-panel-head{display:flex;align-items:center;justify-content:space-between;padding:.9rem 1rem;border-bottom:1px solid var(--yt-border)}.yt-cs-close{width:1.75rem;height:1.75rem;display:grid;place-items:center;border-radius:999px;cursor:pointer;color:var(--yt-muted);font-size:1.35rem;line-height:1}.yt-cs-close:hover{background:#f1f5f9;color:var(--yt-fg)}.yt-cs-panel-body{padding:1.1rem 1rem 1.25rem;text-align:center}.yt-cs-hint{margin:0 0 .75rem;font-size:.9rem;color:var(--yt-muted)}.yt-cs-qr{width:200px;height:200px;object-fit:contain;border-radius:8px;border:1px solid var(--yt-border);background:#fff;margin:0 auto .75rem;display:block}.yt-cs-meta{margin:.35rem 0;font-size:.92rem;color:var(--yt-fg)}.yt-cs-link{font-weight:600}.yt-cs-link,.yt-cs-more{color:var(--yt-primary);text-decoration:none}.yt-cs-more{display:inline-block;margin-top:.85rem;font-size:.85rem}.yt-cs-more:hover{text-decoration:underline}@media (max-width:520px){.yt-cs-panel{right:50%;bottom:5.5rem;transform:translate(50%,12px) scale(.98)}.yt-cs-toggle:checked~.yt-cs-panel{transform:translate(50%) scale(1)}}