:root{--color-primary: #2563eb;--color-primary-dark: #1e40af;--color-text: #1f2937;--color-text-light: #6b7280;--color-bg: #ffffff;--color-bg-secondary: #f9fafb;--color-border: #e5e7eb;--color-border-light: #f3f4f6;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: .5rem;--radius-lg: .75rem}*{box-sizing:border-box}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;line-height:1.6;color:var(--color-text);margin:0;background-color:var(--color-bg-secondary);min-height:100vh;display:flex;flex-direction:column}.header{background-color:var(--color-bg);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100}.header-container{max-width:1200px;margin:0 auto;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.logo{text-decoration:none;color:var(--color-text)}.logo h1{margin:0;font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav{display:flex;gap:1.5rem}.nav a{color:var(--color-text);text-decoration:none;font-weight:500;transition:color .2s}.nav a:hover{color:var(--color-primary)}.main{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:3rem 2rem}.footer{background-color:var(--color-bg);border-top:1px solid var(--color-border);margin-top:auto}.footer-container{max-width:1200px;margin:0 auto;padding:2rem;text-align:center;color:var(--color-text-light);font-size:.875rem}h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--color-text);margin-top:0}h1{font-size:2.5rem;margin-bottom:1.5rem}h2{font-size:2rem;margin-top:2.5rem;margin-bottom:1rem}h3{font-size:1.5rem;margin-top:2rem;margin-bottom:.75rem}img{max-width:100%;height:auto;border-radius:var(--radius)}.post-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:2rem;list-style:none;padding:0;margin:0}.post-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem;transition:all .2s;text-decoration:none;color:inherit;display:block;box-shadow:var(--shadow-sm)}.post-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--color-primary)}.post-card-title{font-size:1.25rem;font-weight:600;margin:0 0 .75rem;color:var(--color-text);line-height:1.4}.post-card-meta{font-size:.875rem;color:var(--color-text-light);margin-top:.5rem}.post-card-date{display:inline-block}.post-header{background:var(--color-bg);border-radius:var(--radius-lg);padding:3rem;margin-bottom:2rem;box-shadow:var(--shadow-sm)}.post-title{font-size:2.5rem;margin-bottom:1rem;line-height:1.2}.post-meta{color:var(--color-text-light);font-size:.875rem;margin-top:1rem}.post-content-wrapper{background:var(--color-bg);border-radius:var(--radius-lg);padding:3rem;box-shadow:var(--shadow-sm)}.post-content{font-size:1.125rem;line-height:1.8}.post-content p{margin:1.5em 0}.post-content h2{margin-top:2.5em;margin-bottom:1em;padding-bottom:.5em;border-bottom:2px solid var(--color-border)}.post-content h3{margin-top:2em;margin-bottom:.75em}.post-content ul,.post-content ol{padding-left:2em;margin:1.5em 0}.post-content li{margin:.5em 0}.post-content a{color:var(--color-primary);text-decoration:underline;text-underline-offset:2px;transition:color .2s}.post-content a:hover{color:var(--color-primary-dark)}.post-content code{background-color:var(--color-bg-secondary);padding:.2em .4em;border-radius:.25rem;font-size:.9em;font-family:Monaco,Menlo,Ubuntu Mono,monospace}.post-content pre{background-color:#1e293b;color:#e2e8f0;padding:1.5rem;border-radius:var(--radius);overflow-x:auto;margin:1.5em 0;border:1px solid #334155;font-size:.9em;line-height:1.6}.post-content pre code{background:none;padding:0;color:inherit;font-family:Monaco,Menlo,Ubuntu Mono,Consolas,monospace;font-size:inherit}.post-content pre code.language-bash,.post-content pre code.language-shell,.post-content pre code.language-javascript,.post-content pre code.language-js,.post-content pre code.language-sql,.post-content pre code.language-php{color:#e2e8f0}.post-content blockquote{border-left:4px solid var(--color-primary);padding-left:1.5rem;margin:1.5em 0;color:var(--color-text-light);font-style:italic}.post-content img{margin:2em 0;box-shadow:var(--shadow-md)}@media(max-width:768px){.header-container{padding:1rem}.main{padding:2rem 1rem}.post-list{grid-template-columns:1fr;gap:1.5rem}.post-header,.post-content-wrapper{padding:2rem 1.5rem}.post-title,h1{font-size:2rem}h2{font-size:1.75rem}}