:root{--color-text: #2c2c2c;--color-text-secondary: #666666;--color-text-tertiary: #999999;--color-bg: #ffffff;--color-bg-subtle: #fafafa;--color-border: #e8e8e8;--color-link: #2563eb;--color-link-hover: #1d4ed8;--color-accent: #2c2c2c;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Meiryo", "Noto Sans JP", sans-serif;--font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);line-height:1.8;color:var(--color-text);background-color:var(--color-bg);font-size:18px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-link);text-decoration:none;transition:color .2s ease}a:hover{color:var(--color-link-hover);text-decoration:underline;text-decoration-color:var(--color-link-hover)}.container{max-width:680px;margin:0 auto;padding:0 2rem}header{border-bottom:none;margin-bottom:3rem;padding:2.5rem 0 1.5rem}header h1{font-size:1.25rem;font-weight:400;margin-bottom:0;letter-spacing:0}header h1 a{color:var(--color-text);text-decoration:none;transition:opacity .2s ease}header h1 a:hover{color:var(--color-text);text-decoration:none;opacity:.6}header nav{display:flex;gap:2rem;margin-top:1.5rem}header nav a{font-size:.9375rem;color:var(--color-text-secondary);text-decoration:none;transition:color .2s ease}header nav a:hover{color:var(--color-text);text-decoration:none}main{min-height:calc(100vh - 200px)}footer{margin-top:8rem;padding:3rem 0;border-top:none;font-size:.875rem;color:var(--color-text-tertiary);text-align:center}article{line-height:1.75}article h1{font-size:2.25rem;font-weight:500;margin-top:0;margin-bottom:1.5rem;padding-bottom:0;border-bottom:none;color:var(--color-text);line-height:1.3;letter-spacing:-.01em}article h2{font-size:1.5rem;font-weight:500;margin-top:3.5rem;margin-bottom:1.5rem;padding-bottom:.75rem;border-bottom:1px solid var(--color-border);color:var(--color-text);line-height:1.4;letter-spacing:0}article h3{font-size:1.25rem;font-weight:500;margin-top:2.5rem;margin-bottom:1.25rem;color:var(--color-text);line-height:1.4;letter-spacing:0}article h4{font-size:1.0625rem;font-weight:600;margin-top:2rem;margin-bottom:.75rem;color:var(--color-text)}article p{margin-bottom:1.5rem;color:var(--color-text);font-size:1.125rem;line-height:1.8}article ul,article ol{margin-left:0;margin-bottom:1.5rem;padding-left:1.5rem}article li{margin-bottom:.75rem;color:var(--color-text);line-height:1.8;font-size:1.125rem}article ul li::marker{color:var(--color-text-secondary);font-weight:500}article ol li::marker{color:var(--color-text-secondary);font-weight:500}article code{background-color:var(--color-bg-subtle);padding:.25em .5em;border-radius:4px;font-family:var(--font-mono);font-size:.9em;color:var(--color-text);font-weight:500;border:1px solid var(--color-border)}article pre{background-color:var(--color-bg-subtle);padding:1.25rem;border-radius:6px;overflow-x:auto;margin-bottom:1.5rem;border:1px solid var(--color-border);line-height:1.6}article pre code{background-color:transparent;padding:0;color:var(--color-text);font-size:.875rem;font-weight:400}article blockquote{border-left:3px solid var(--color-border);padding-left:1.5rem;margin-left:0;margin-bottom:1.5rem;padding-top:.5rem;padding-bottom:.5rem;background-color:var(--color-bg-subtle);color:var(--color-text);font-style:normal;font-size:1.0625rem;border-radius:0 4px 4px 0}article strong{font-weight:600;color:var(--color-text)}article em{font-style:italic;color:var(--color-text)}.table-wrapper{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:2.5rem 0;border-radius:6px;box-shadow:0 1px 3px #0000000d}article table,main article table,article>div table,article div table,.table-wrapper table{width:100%!important;min-width:600px!important;border-collapse:collapse!important;margin:0!important;font-size:1rem!important;border:1px solid var(--color-border)!important;border-radius:0!important;overflow:visible!important;display:table!important;box-shadow:none!important}.table-wrapper table{border-radius:6px!important;box-shadow:0 1px 3px #0000000d}article table th,article table td,main article table th,main article table td,article>div table th,article>div table td,article div table th,article div table td{padding:1rem 1.25rem!important;border:none!important;border-bottom:1px solid var(--color-border)!important;text-align:left!important;display:table-cell!important}article table tr:last-child td,main article table tr:last-child td,article>div table tr:last-child td,article div table tr:last-child td{border-bottom:none!important}article table thead th,article table th,main article table thead th,main article table th,article>div table thead th,article>div table th,article div table thead th,article div table th{background-color:var(--color-bg-subtle)!important;font-weight:600!important;color:var(--color-text)!important;border-bottom:2px solid var(--color-border)!important}article table td,main article table td,article>div table td,article div table td{color:var(--color-text)!important}article table tbody tr:hover,main article table tbody tr:hover,article>div table tbody tr:hover,article div table tbody tr:hover{background-color:var(--color-bg-subtle)!important}article hr,article>div hr,article div hr,main article hr,main article>div hr,main article div hr{border:none!important;margin:4rem 0!important;height:1.5rem!important;background:none!important;text-align:center!important;position:relative!important;display:block!important;overflow:visible!important}article hr:before,article>div hr:before,article div hr:before,main article hr:before,main article>div hr:before,main article div hr:before{content:"•••"!important;color:var(--color-text-secondary)!important;font-size:1.5rem!important;letter-spacing:.75em!important;position:absolute!important;left:50%!important;top:50%!important;transform:translate(-50%,-50%)!important;background-color:var(--color-bg)!important;padding:0 1.5rem!important;line-height:1!important;font-weight:400!important}article img{max-width:100%;height:auto;border-radius:0;margin:2rem 0}article a{color:var(--color-link);text-decoration:underline;text-decoration-color:#2563eb4d;text-underline-offset:3px;transition:color .2s ease,text-decoration-color .2s ease;font-weight:500}article a:hover{color:var(--color-link-hover);text-decoration-color:var(--color-link-hover);text-decoration-thickness:2px}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:3rem;height:3rem;background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease,transform .2s ease;z-index:1000;box-shadow:0 2px 8px #0000001a;color:var(--color-text);font-size:1.25rem;text-decoration:none}.back-to-top.visible{opacity:1;visibility:visible}.back-to-top:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000026;background-color:var(--color-bg-subtle)}.back-to-top:active{transform:translateY(0)}@media (max-width: 768px){.back-to-top{bottom:1.5rem;right:1.5rem;width:2.75rem;height:2.75rem;font-size:1.125rem}}@media (max-width: 768px){body{font-size:17px}.container{padding:0 1.5rem}header{padding:2rem 0 1.5rem;margin-bottom:2.5rem}header h1{font-size:1.125rem}header nav{gap:1.5rem}article h1{font-size:1.875rem}article h2{font-size:1.375rem;margin-top:2.5rem}article h3{font-size:1.125rem;margin-top:2rem}article p{margin-bottom:1.25rem;font-size:1.0625rem}article ul,article ol{padding-left:1.25rem}article li{font-size:1.0625rem}}