:root{--white-bg: #fafafa;--white-surface: #ffffff;--white-border: #e4e4e7;--white-text: #18181b;--white-text-muted: #71717a;--white-accent: #0a0a0a;--white-link: #2563eb;--white-link-hover: #1d4ed8;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--content-max-width: 720px;--nav-height: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-sans);background:var(--white-bg);color:var(--white-text);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:var(--white-surface);border-bottom:1px solid var(--white-border);z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:0 2rem}.nav-brand{font-family:var(--font-mono);font-size:.875rem;font-weight:600;color:var(--white-accent);text-decoration:none;letter-spacing:.05em}.nav-links{display:flex;gap:2rem;list-style:none}.nav-links a{font-size:.875rem;color:var(--white-text-muted);text-decoration:none;transition:color .2s}.nav-links a:hover{color:var(--white-accent)}.universe-switch{display:flex;align-items:center;background:var(--white-border);border-radius:25px;padding:4px;gap:0}.universe-switch button{padding:8px 16px;border:none;border-radius:20px;font-family:var(--font-mono);font-size:.7rem;font-weight:600;letter-spacing:.1em;cursor:pointer;transition:all .3s ease;text-transform:uppercase}.universe-switch .switch-black,.universe-switch .switch-white{background:transparent;color:var(--white-text-muted)}.universe-switch .switch-black.active{background:#0a0a0a;color:#fff}.universe-switch .switch-white.active{background:#fff;color:#0a0a0a;box-shadow:0 2px 8px #00000026}.universe-switch button:hover:not(.active){color:var(--white-accent)}.universe-switch .switch-labo{padding:8px 16px;border:none;border-radius:20px;font-family:var(--font-mono);font-size:.7rem;font-weight:600;letter-spacing:.1em;cursor:pointer;transition:all .3s ease;text-transform:uppercase;text-decoration:none;background:linear-gradient(135deg,#059669,#10b981);color:#fff;margin-left:4px}.universe-switch .switch-labo:hover{background:linear-gradient(135deg,#047857,#059669);transform:scale(1.02)}.article-container{max-width:var(--content-max-width);margin:0 auto;padding:calc(var(--nav-height) + 4rem) 1.5rem 4rem}.article-header{margin-bottom:3rem;padding-bottom:2rem;border-bottom:1px solid var(--white-border)}.article-category{display:inline-block;font-family:var(--font-mono);font-size:.75rem;color:var(--white-text-muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:1rem}.article-title{font-size:2.5rem;font-weight:700;line-height:1.2;color:var(--white-accent);margin-bottom:1rem}.article-meta{display:flex;gap:2rem;font-size:.875rem;color:var(--white-text-muted)}.article-meta span{display:flex;align-items:center;gap:.5rem}.article-content h2{font-size:1.75rem;font-weight:700;color:var(--white-accent);margin:3rem 0 1.5rem;padding-top:1rem}.article-content h3{font-size:1.25rem;font-weight:600;color:var(--white-accent);margin:2rem 0 1rem}.article-content p{margin-bottom:1.5rem;font-size:1.0625rem}.article-content a{color:var(--white-link);text-decoration:underline;text-underline-offset:2px}.article-content a:hover{color:var(--white-link-hover)}.article-content ul,.article-content ol{margin:1.5rem 0;padding-left:1.5rem}.article-content li{margin-bottom:.75rem}.article-content blockquote{margin:2rem 0;padding:1.5rem;background:var(--white-surface);border-left:3px solid var(--white-accent);font-style:italic}.article-content code{font-family:var(--font-mono);font-size:.875em;background:var(--white-surface);padding:.2em .4em;border-radius:3px;border:1px solid var(--white-border)}.article-content pre{margin:2rem 0;padding:1.5rem;background:var(--white-accent);color:var(--white-bg);border-radius:8px;overflow-x:auto}.article-content pre code{background:none;border:none;padding:0;color:inherit}.article-content img{max-width:100%;height:auto;border-radius:8px;margin:2rem auto;display:block;box-shadow:0 4px 20px #0000001a;border:1px solid var(--white-border);cursor:zoom-in;transition:transform .2s ease}.article-content img:hover{transform:scale(1.02)}.lightbox-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:9999;cursor:zoom-out;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}.lightbox-overlay.active{opacity:1;visibility:visible}.lightbox-overlay img{max-width:90vw;max-height:90vh;border-radius:8px;box-shadow:0 10px 50px #00000080}.lightbox-close{position:absolute;top:20px;right:30px;font-size:2rem;color:#fff;cursor:pointer;opacity:.7;transition:opacity .2s ease}.lightbox-close:hover{opacity:1}.article-content img+em{display:block;text-align:center;font-size:.875rem;color:var(--white-muted);margin-top:-1rem;margin-bottom:2rem}.toc{position:fixed;right:2rem;top:calc(var(--nav-height) + 2rem);width:250px;max-height:calc(100vh - var(--nav-height) - 4rem);overflow-y:auto;padding:1.5rem;background:var(--white-surface);border:1px solid var(--white-border);border-radius:8px}.toc-title{font-family:var(--font-mono);font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--white-text-muted);margin-bottom:1rem}.toc-list{list-style:none}.toc-list a{display:block;font-size:.875rem;color:var(--white-text-muted);text-decoration:none;border-left:2px solid transparent;padding:.5rem 0 .5rem 1rem;margin-left:-1rem;transition:all .2s}.toc-list a:hover,.toc-list a.active{color:var(--white-accent);border-left-color:var(--white-accent)}@media (max-width: 1200px){.toc{display:none}}.callout{margin:2rem 0;padding:1.5rem;border-radius:8px;border-left:4px solid}.callout-info{background:#eff6ff;border-color:#3b82f6}.callout-warning{background:#fefce8;border-color:#eab308}.callout-tip{background:#f0fdf4;border-color:#22c55e}.callout-title{font-weight:600;margin-bottom:.5rem}.footer{margin-top:4rem;padding:3rem 1.5rem;background:var(--white-surface);border-top:1px solid var(--white-border)}.footer-content{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}.footer-section h4{font-family:var(--font-mono);font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--white-text-muted);margin-bottom:1rem}.footer-section ul{list-style:none}.footer-section a{display:block;padding:.25rem 0;font-size:.875rem;color:var(--white-text);text-decoration:none}.footer-section a:hover{color:var(--white-link)}.footer-bottom{margin-top:2rem;padding-top:2rem;border-top:1px solid var(--white-border);text-align:center;font-size:.875rem;color:var(--white-text-muted)}@media (max-width: 768px){.footer-content{grid-template-columns:1fr}.nav-links{display:none}.article-title{font-size:1.75rem}}.shadow-toggle{display:inline-flex;align-items:center;gap:.5rem;margin-top:3rem;padding:.75rem 1.5rem;background:var(--white-accent);color:var(--white-surface);border:none;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.05em;cursor:pointer;transition:opacity .2s}.shadow-toggle:hover{opacity:.9}.shadow-panel{margin-top:1.5rem;padding:1.5rem;background:var(--white-accent);color:var(--white-bg);border-radius:8px;display:none}.shadow-panel.visible{display:block}.shadow-panel pre{margin:0;background:none}