body { background: #f7f9fc; color: #111827; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; }
.navbar { background: #fff; border-bottom: 1px solid #e5e7eb; }
.navbar-brand { font-weight: 800; letter-spacing: .04em; }
.language-menu { max-height: 65vh; overflow-y: auto; min-width: 13rem; }
.dropdown-item[aria-current="true"] { font-weight: 700; background: #eff6ff; }
footer { padding: 1.5rem 0; margin-top: 2rem; border-top: 1px solid #e5e7eb; color: #6b7280; font-size: .85rem; }
footer a { margin-inline: .4rem; color: #374151; }
.ad-area { margin-block: 1.5rem; min-height: 100px; }
.file-notice { font-size: .85rem; color: #4b5563; line-height: 1.6; }
.tool-grid > *, .tool-head > *, .row > * { min-width: 0; }
.tool-title, .tool-desc, .file-notice { overflow-wrap: anywhere; }
.tool-grid { position: relative; z-index: 1; }
.guide-list { line-height: 1.9; }
:focus-visible { outline: 3px solid #2563eb; outline-offset: 3px; }
@media (max-width: 575px) { .tool-card-header, .tool-card-body { padding: 1rem !important; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; } }