*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #ffffff;--color-text: #202122;--color-text-muted: #666;--color-link: #0645ad;--color-link-visited: #0b0080;--color-border: #a2a9b1;--color-surface: #f8f9fa;--color-surface-alt: #eaecef;--color-warning-bg: #fef6e7;--color-warning-border: #fc3;--color-info-bg: #eaf3ff;--color-info-border: #36c;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-serif: Georgia, "Times New Roman", serif;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--border-width: 1px;--line-height: 1.6;--line-height-tight: 1.3;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px rgba(0, 0, 0, .05), 0 2px 4px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .08), 0 4px 6px rgba(0, 0, 0, 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p:last-child{margin-bottom:0}.copyright{text-align:center;margin:0}.copyright a{color:var(--color-link);transition:color .2s ease-out}.copyright a:hover{color:#053a92}.cookie-consent{position:fixed;bottom:var(--space-md);left:50%;transform:translate(-50%);max-width:720px;width:calc(100% - 2 * var(--space-md));background:var(--color-surface-elevated, #ffffff);color:var(--color-text);border:1px solid var(--color-border-subtle, #e4e7eb);border-radius:6px;z-index:9999;padding:var(--space-md);display:flex;gap:var(--space-md);align-items:center;box-shadow:var(--shadow-lg, 0 10px 15px rgba(0, 0, 0, .08), 0 4px 6px rgba(0, 0, 0, .05));z-index:1000}.cookie-consent .cookie-message{flex:1;font-size:var(--text-sm)}.cookie-consent button{background:var(--color-link);color:#fff;border:none;padding:.5rem .9rem;border-radius:4px;cursor:pointer;font-weight:600}.cookie-consent 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.topic-card__title{text-decoration:underline}.topic-card__description{color:var(--color-text-muted);font-size:var(--text-sm);margin:0;line-height:1.5}.topic-card:after{content:"→";position:absolute;right:var(--space-lg);top:50%;transform:translateY(-50%);color:var(--color-link);font-size:1.25rem;opacity:.5;transition:opacity .15s}.topic-card:hover:after{opacity:1}.card-grid{display:grid;width:100%;gap:var(--space-sm);grid-template-columns:1fr}@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}.card-grid .topic-card{margin:0}.see-also{margin:var(--space-xl) 0;padding-top:var(--space-lg);border-top:var(--border-width) solid var(--color-border-subtle, #e4e7eb)}.see-also__title{font-family:var(--font-serif);font-size:var(--text-xl);font-weight:400;margin:0 0 var(--space-md) 0;padding-bottom:var(--space-xs);border-bottom:var(--border-width) solid var(--color-border)}.see-also__list{list-style:disc;margin:0;padding-left:var(--space-xl)}.see-also__item{margin-bottom:var(--space-sm)}.see-also__link{color:var(--color-link)}.see-also__link:visited{color:var(--color-link-visited)}.see-also__description{color:var(--color-text-muted);font-size:var(--text-sm)}main>article>h1:first-child,main>h1:first-child{margin-top:0}.skip-to-content{position:absolute;top:-40px;left:0;background:var(--color-link, #0645ad);color:#fff;padding:.5rem 1rem;text-decoration:none;z-index:10000;border-radius:0 0 4px}.skip-to-content:focus{top:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm, .5rem);padding:.75rem 1.5rem;font-family:inherit;font-size:var(--text-base, 1rem);font-weight:600;line-height:1.5;text-align:center;text-decoration:none;border:2px solid transparent;border-radius:6px;cursor:pointer;transition:all .2s ease-out;min-height:44px}.btn-primary{background:var(--color-link, #0645ad);color:#fff;border-color:var(--color-link, #0645ad)}.btn-primary:hover:not(:disabled){background:#053a92;border-color:#053a92;transform:translateY(-1px);box-shadow:0 2px 8px #0645ad33}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--color-surface, #f8f9fa);color:var(--color-text, #202122);border-color:var(--color-border, #a2a9b1)}.btn-secondary:hover:not(:disabled){background:var(--color-surface-alt, #eaecef);border-color:var(--color-text-muted, #666)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn:focus-visible{outline:2px solid var(--color-link, #0645ad);outline-offset:2px}.form-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.25rem}.form-group:last-child{margin-bottom:0}.form-label{font-weight:600;font-size:var(--text-sm, .875rem);color:var(--color-text, #202122)}.form-input{width:100%;padding:.75rem 1rem;border:1px solid var(--color-border, #a2a9b1);border-radius:6px;font-size:var(--text-base, 1rem);font-family:inherit;background:var(--color-bg, #ffffff);color:var(--color-text, #202122);transition:border-color .2s,box-shadow .2s}.form-input:focus{outline:none;border-color:var(--color-link, #0645ad);box-shadow:0 0 0 3px #0645ad1a}.form-input:invalid:not(:focus):not(:placeholder-shown){border-color:#dc2626}.form-hint{color:var(--color-text-muted, #72777d);font-size:var(--text-xs, .75rem);line-height:1.4}.form-error{padding:.5rem .75rem;background:#fee;border:1px solid #dc2626;border-radius:4px;color:#dc2626;font-size:var(--text-sm, .875rem);line-height:1.4}a{transition:color .2s ease-out,text-decoration-color .2s ease-out}header a:focus-visible{outline:2px solid var(--color-link, #0645ad);outline-offset:2px;border-radius:2px}@media print{.breadcrumbs,.skip-to-content{display:none}}@media(prefers-reduced-motion:reduce){.btn:hover:not(:disabled),.topic-card:hover,.cookie-consent button:hover{transform:none}a,.topic-card,.cookie-consent button{transition:none}}