:root{--color-bg: #ffffff;--color-bg-secondary: #f5f5f5;--color-text: #1a1a1a;--color-text-secondary: #666666;--color-accent: #f7931a;--color-accent-hover: #e8850f;--color-link: #0066cc;--color-link-hover: #004499;--color-surface: #ffffff;--color-surface-elevated: #fafafa;--color-border: #e0e0e0;--color-code-bg: #f5f5f5;--color-code-text: #333333;--color-valid: #16a34a;--color-invalid: #dc2626;--color-warning: #ca8a04;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 2rem;--space-xl: 4rem;--content-width: 48rem;--wide-width: 64rem;--full-width: 80rem;--transition-fast: .15s ease;--transition-normal: .3s ease}[data-theme=dark]{--color-bg: #0f0f0f;--color-bg-secondary: #1a1a1a;--color-text: #e5e5e5;--color-text-secondary: #999999;--color-accent: #f7931a;--color-accent-hover: #ffaa33;--color-link: #66aaff;--color-link-hover: #99ccff;--color-surface: #1a1a1a;--color-surface-elevated: #262626;--color-border: #333333;--color-code-bg: #1e1e1e;--color-code-text: #d4d4d4}[data-theme=bitcoin]{--color-bg: #0d1117;--color-bg-secondary: #161b22;--color-text: #f0f6fc;--color-text-secondary: #8b949e;--color-accent: #f7931a;--color-accent-hover: #ffaa33;--color-link: #f7931a;--color-link-hover: #ffaa33;--color-surface: #161b22;--color-surface-elevated: #21262d;--color-border: #30363d;--color-code-bg: #161b22;--color-code-text: #f0f6fc}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-body);line-height:1.6;color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-normal),color var(--transition-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{min-height:100vh;display:flex;flex-direction:column}main{flex:1;width:100%;max-width:var(--content-width);margin:0 auto;padding:var(--space-lg) var(--space-md)}main.wide{max-width:var(--wide-width)}main.full{max-width:var(--full-width)}img{max-width:100%;height:auto;display:block}a{color:var(--color-link);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-link-hover)}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);line-height:1.3;color:var(--color-text);margin-bottom:var(--space-sm)}h1{font-size:2.25rem}h2{font-size:1.75rem}h3{font-size:1.375rem}h4{font-size:1.125rem}p{margin-bottom:var(--space-md)}pre,code{font-family:var(--font-mono)}pre{background:var(--color-code-bg);color:var(--color-code-text);padding:var(--space-md);border-radius:6px;overflow-x:auto;margin-bottom:var(--space-md);font-size:.875rem;line-height:1.5}code{background:var(--color-code-bg);color:var(--color-code-text);padding:.15em .35em;border-radius:3px;font-size:.9em}pre code{background:none;padding:0;border-radius:0;font-size:inherit}blockquote{border-left:3px solid var(--color-accent);padding-left:var(--space-md);margin-bottom:var(--space-md);color:var(--color-text-secondary);font-style:italic}hr{border:none;border-top:1px solid var(--color-border);margin:var(--space-lg) 0}ul,ol{padding-left:var(--space-lg);margin-bottom:var(--space-md)}li{margin-bottom:var(--space-xs)}.text-secondary{color:var(--color-text-secondary)}.text-accent{color:var(--color-accent)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.btn{display:inline-flex;align-items:center;gap:var(--space-xs);padding:.625rem 1.25rem;border-radius:6px;font-weight:600;font-size:.9375rem;cursor:pointer;border:none;transition:background-color var(--transition-fast),transform var(--transition-fast);text-decoration:none}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover{background:var(--color-accent-hover);color:#fff}.btn-secondary{background:var(--color-surface-elevated);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-bg-secondary);color:var(--color-text)}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:var(--space-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.card:hover{border-color:var(--color-accent);box-shadow:0 2px 8px #00000014}.grid{display:grid;gap:var(--space-md)}.grid-2{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}.tag{display:inline-block;background:var(--color-bg-secondary);color:var(--color-text-secondary);padding:.15em .5em;border-radius:4px;font-size:.8125rem;font-weight:500}.nav[data-astro-cid-dmqpwcec]{display:flex;gap:var(--space-sm);align-items:center}.nav-link[data-astro-cid-dmqpwcec]{padding:.35rem .65rem;border-radius:6px;font-size:.875rem;font-weight:500;color:var(--color-text-secondary);transition:color var(--transition-fast),background-color var(--transition-fast)}.nav-link[data-astro-cid-dmqpwcec]:hover,.nav-link[data-astro-cid-dmqpwcec].active{color:var(--color-text);background:var(--color-bg-secondary)}@media(max-width:768px){.nav[data-astro-cid-dmqpwcec]{display:none}}.header[data-astro-cid-3ef6ksr2]{border-bottom:1px solid var(--color-border);background:var(--color-surface);position:sticky;top:0;z-index:100}.header-inner[data-astro-cid-3ef6ksr2]{max-width:var(--wide-width);margin:0 auto;padding:.75rem var(--space-md);display:flex;align-items:center;justify-content:space-between}.logo[data-astro-cid-3ef6ksr2]{font-weight:700;font-size:1.125rem;color:var(--color-text)}.logo[data-astro-cid-3ef6ksr2]:hover{color:var(--color-accent)}.header-right[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:var(--space-sm)}.mobile-toggle[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:4px}.mobile-toggle[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2]{display:block;width:20px;height:2px;background:var(--color-text);transition:transform var(--transition-fast),opacity var(--transition-fast)}.mobile-toggle[data-astro-cid-3ef6ksr2].open span[data-astro-cid-3ef6ksr2]:nth-child(1){transform:translateY(6px) rotate(45deg)}.mobile-toggle[data-astro-cid-3ef6ksr2].open span[data-astro-cid-3ef6ksr2]:nth-child(2){opacity:0}.mobile-toggle[data-astro-cid-3ef6ksr2].open span[data-astro-cid-3ef6ksr2]:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.mobile-nav[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;padding:0 var(--space-md) var(--space-md);border-top:1px solid var(--color-border)}.mobile-nav[data-astro-cid-3ef6ksr2].open{display:flex}.mobile-nav-link[data-astro-cid-3ef6ksr2]{padding:var(--space-sm) 0;color:var(--color-text);font-weight:500;border-bottom:1px solid var(--color-border)}@media(max-width:768px){.mobile-toggle[data-astro-cid-3ef6ksr2]{display:flex}}.theme-switcher{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:6px;padding:.35rem .5rem;font-size:1rem;cursor:pointer;color:var(--color-text);line-height:1;transition:border-color var(--transition-fast)}.theme-switcher:hover{border-color:var(--color-accent)}.footer[data-astro-cid-sz7xmlte]{border-top:1px solid var(--color-border);background:var(--color-surface);margin-top:auto}.footer-inner[data-astro-cid-sz7xmlte]{max-width:var(--wide-width);margin:0 auto;padding:var(--space-lg) var(--space-md);text-align:center}.footer-links[data-astro-cid-sz7xmlte]{display:flex;justify-content:center;gap:var(--space-md);margin-bottom:var(--space-md);flex-wrap:wrap}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--color-text-secondary);font-size:.875rem}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-accent)}.footer-copy[data-astro-cid-sz7xmlte]{color:var(--color-text-secondary);font-size:.8125rem;margin:0}