:root{font-family:system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--text, #222);background:var(--bg, #fafbfc)}*{scrollbar-width:thin;scrollbar-color:var(--border, #d0d7de) transparent}*::-webkit-scrollbar{width:10px;height:10px}*::-webkit-scrollbar-track{background:transparent}*::-webkit-scrollbar-thumb{background:var(--border, #d0d7de);border-radius:8px;border:2px solid transparent;background-clip:padding-box}*::-webkit-scrollbar-thumb:hover{background:var(--primary, #1f4e79);background-clip:padding-box}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;width:100%;min-height:100vh}#root{display:flex;flex-direction:column}h1{font-size:1.75rem;margin:0 0 .5rem;font-weight:600;color:var(--text, #222)}h2{font-size:1.15rem;margin:0 0 .5rem;font-weight:600;color:var(--text, #222)}h3{font-size:1rem;margin:0 0 .4rem;font-weight:600;color:var(--text, #222)}p{margin:0 0 .5rem}a{color:var(--primary, #1F4E79);text-decoration:none}a:hover{text-decoration:underline}code{font-family:ui-monospace,SF Mono,Consolas,monospace;font-size:.875em;padding:1px 4px;border-radius:3px;background:var(--surface-alt, #f6f8fa);color:var(--text, #222)}button{font-family:inherit}input[type=checkbox],input[type=radio]{accent-color:var(--primary, #1F4E79);cursor:pointer;width:1.05rem;height:1.05rem}input[type=checkbox]:disabled,input[type=radio]:disabled{cursor:not-allowed;opacity:.6}@keyframes snackIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.lang-switcher{position:relative;display:inline-block}.lang-trigger{display:inline-flex;align-items:center;gap:.4rem;background:transparent;border:1px solid var(--border-on-primary, rgba(255, 255, 255, .3));border-radius:6px;color:var(--text-on-primary, #fff);padding:.3rem .55rem;font-family:inherit;font-size:.78rem;font-weight:600;letter-spacing:.05em;cursor:pointer;transition:background .15s ease}.lang-trigger:hover{background:var(--hover-on-primary, rgba(255, 255, 255, .12))}.lang-flag{font-size:1.05rem;line-height:1}.lang-code{font-weight:600}.lang-caret{font-size:.7rem;opacity:.8}.lang-menu{position:absolute;right:0;top:calc(100% + 6px);min-width:200px;background:var(--surface, #fff);color:var(--text, #222);border:1px solid var(--border, #e5e9ee);border-radius:8px;list-style:none;margin:0;padding:4px;box-shadow:0 8px 24px #0000002e;z-index:100}.lang-menu li{list-style:none}.lang-option{width:100%;display:grid;grid-template-columns:22px 1fr auto;align-items:center;gap:.6rem;background:transparent;border:none;color:var(--text, #222);padding:.5rem .6rem;border-radius:6px;cursor:pointer;font-family:inherit;font-size:.9rem;text-align:left}.lang-option:hover{background:var(--surface-alt, #f6f8fa)}.lang-option.active{background:var(--primary-light, #e8eff7);color:var(--primary, #1F4E79);font-weight:600}.lang-name{font-weight:500}.lang-code-small{font-size:.7rem;color:var(--text-muted, #666);letter-spacing:.05em}.lang-option.active .lang-code-small{color:var(--primary, #1F4E79)}.theme-switcher{display:inline-flex;gap:4px;align-items:center;padding:3px 4px;border:1px solid var(--border-on-primary, rgba(255, 255, 255, .3));border-radius:6px}.theme-swatch{width:18px;height:18px;border-radius:50%;border:1px solid rgba(255,255,255,.4);cursor:pointer;padding:0;transition:transform .12s ease}.theme-swatch:hover{transform:scale(1.15)}.theme-swatch.active{transform:scale(1.1)}