.header{border-bottom:1px solid var(--border-color);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem 1rem;padding:1rem 1.25rem;display:flex}.header-left{align-items:center;gap:1.25rem;display:flex}.logo-link{align-items:center;display:flex}.logo-img{width:auto;height:32px}.nav-link{color:var(--brand);border:1px solid #0000;border-radius:9999px;padding:.4rem 1rem;font-size:.9rem;font-weight:600;text-decoration:none;transition:border-color .2s,box-shadow .2s}.nav-link:hover,.nav-link:focus-visible{border-color:var(--brand);outline:none;box-shadow:0 0 0 1px #00c3f64d}.header-controls{flex-wrap:nowrap;align-items:center;gap:1rem;margin-left:auto;display:flex}.theme-toggle{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:9999px;align-items:center;gap:0;padding:3px;display:flex}.theme-toggle-btn{width:36px;height:36px;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:9999px;padding:0;font-family:inherit;font-size:1rem;transition:background .2s,color .2s}.theme-toggle-btn:hover{color:var(--text-primary)}.theme-toggle-btn.active{background:var(--brand);color:#fff}.lang-dropdown{border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239898b0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right .6rem center;background-repeat:no-repeat;border-radius:8px;padding:.4rem 2rem .4rem .75rem;font-family:inherit;font-size:.875rem;transition:border-color .2s}.lang-dropdown:hover,.lang-dropdown:focus{border-color:var(--brand);outline:none}.footer{border-top:1px solid var(--border-color);padding:.9rem 1.25rem}.footer-nav{flex-wrap:wrap;justify-content:center;align-items:center;gap:.65rem 1.25rem;display:flex}.footer-nav a{color:var(--text-secondary);font-size:.875rem;font-weight:600;text-decoration:none}.footer-nav a:hover,.footer-nav a:focus-visible{color:var(--brand);outline:none}.main{flex:auto;justify-content:center;align-items:center;display:flex}.main--home,.main--document,.main--tool{flex-direction:column;justify-content:flex-start;align-items:stretch}.main--tool{min-height:0;overflow:hidden}.main-outlet{width:100%}.main--tool .main-outlet{flex-direction:column;flex:auto;min-height:0;display:flex}.main--tool .feature-layout{flex:auto;height:auto;min-height:0}.page-intro{border-bottom:1px solid var(--border-color);flex:none;width:100%;padding:.9rem 1.25rem .85rem}.page-intro-inner{max-width:46rem}.page-intro h1{color:var(--text-primary);margin:0 0 .35rem;font-size:1.35rem;font-weight:700}.page-intro p{color:var(--text-secondary);margin:0;font-size:.9375rem}.collapsible-section{border-bottom:1px solid var(--border-color);margin:0;padding:0;display:block}.collapsible-section summary{cursor:pointer;-webkit-user-select:none;user-select:none;color:var(--text-primary);background:var(--bg-secondary);align-items:center;padding:.75rem 1rem;font-weight:500;list-style:none;display:flex}.collapsible-section summary::-webkit-details-marker{display:none}.collapsible-section summary:before{content:"";background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-position:50%;background-repeat:no-repeat;background-size:contain;width:1em;height:1em;margin-right:.5em;transition:transform .2s;display:inline-block}.collapsible-section[open] summary:before{transform:rotate(180deg)}.collapsible-section summary:hover{background:var(--bg-tertiary)}.collapsible-content{padding:0}.collapsible-content .panel{border-bottom:1px solid var(--border-color);border-radius:0;margin:0;padding:.75rem 1rem}.collapsible-content .panel:last-child{border-bottom:none}.collapsible-info-panel{background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);padding:.75rem 1rem}.collapsible-info{color:var(--text-secondary);margin:0;font-size:.85rem;font-style:italic;line-height:1.5}@media (width<=479px){.header{padding:.75rem}.header-left{gap:.5rem}.header-controls{gap:.35rem}.nav-link{padding:.35rem .5rem}.page-intro{padding-inline:.75rem}}@media (width>=480px){.header{padding:1rem 1.5rem}.logo-img{height:40px}}@media (width>=768px){.header{padding:1rem 2rem}.page-intro{padding:1rem 2rem .9rem}}@media (width>=1024px){.header{padding:1rem 2.5rem}.page-intro{padding:1rem 2.5rem .9rem}.page-intro h1{font-size:1.5rem}}