:root{--color-paper: #0d1117;--color-paper-deep: #161b22;--color-code-bg: #010409;--color-ink: #e6edf3;--color-ink-80: #c9d1d9;--color-ink-60: #8b949e;--color-ink-40: #6e7681;--color-rule: #30363d;--color-rule-soft: #21262d;--color-accent: #58a6ff;--color-breaking: #f778ba;--font-display: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;--font-body: "Inter", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Consolas", monospace;--text-xs: .6875rem;--text-sm: .8125rem;--text-base: clamp(.9375rem, .9rem + .2vw, 1rem);--text-lead: clamp(1rem, .95rem + .3vw, 1.125rem);--text-h3: clamp(1.0625rem, 1rem + .35vw, 1.25rem);--text-h2: clamp(1.125rem, 1rem + .5vw, 1.375rem);--text-h1: clamp(1.75rem, 1.2rem + 2vw, 3rem);--text-display: clamp(2.5rem, 1rem + 6vw, 5.5rem);--text-number-lg: clamp(3.5rem, 1rem + 9vw, 8rem);--text-number-md: clamp(2.5rem, 1.2rem + 3.8vw, 4.25rem);--text-number-sm: clamp(1.375rem, 1.1rem + .6vw, 1.75rem);--space-2xs: .25rem;--space-xs: .5rem;--space-sm: .875rem;--space-md: 1.5rem;--space-lg: 2.5rem;--space-xl: 4rem;--space-2xl: clamp(3rem, 2rem + 4vw, 6rem);--max-width: 60rem;--max-content: 44rem;--ease-out-expo: cubic-bezier(.16, 1, .3, 1);--duration-fast: .18s;--duration-normal: .42s}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-body);line-height:1.75;font-size:var(--text-base);color:var(--color-ink);background-color:var(--color-paper);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"palt" 1}body{max-width:var(--max-width);margin:0 auto;padding:var(--space-md) var(--space-md) var(--space-lg)}header.masthead{display:grid;grid-template-columns:1fr auto 1fr;align-items:end;gap:var(--space-sm);padding-top:var(--space-sm);padding-bottom:var(--space-xs);border-top:2px solid var(--color-ink)}header.masthead:after{content:"";grid-column:1 / -1;height:1px;background:var(--color-ink);margin-top:var(--space-xs);box-shadow:0 4px 0 -3px var(--color-ink)}.masthead-meta{font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.08em;text-transform:uppercase;color:var(--color-ink-60);line-height:1.4}.masthead-meta--left{text-align:left;padding-bottom:.75rem}.masthead-meta--right{text-align:right;padding-bottom:.75rem}.masthead-title{font-family:var(--font-display);font-weight:800;font-size:clamp(2rem,1rem + 6vw,5rem);line-height:.9;letter-spacing:-.04em;color:var(--color-ink);text-decoration:none;white-space:nowrap;text-align:center}.masthead-title:hover,.masthead-title:focus-visible{color:var(--color-ink)}@media(max-width:640px){header.masthead{grid-template-columns:1fr;text-align:center}.masthead-meta--left,.masthead-meta--right{text-align:center;padding-bottom:0}}.issue-bar{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:var(--space-sm);margin-top:var(--space-lg);padding:var(--space-xs) 0;font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.12em;text-transform:uppercase;color:var(--color-ink-60);border-top:1px solid var(--color-ink);border-bottom:1px solid var(--color-ink)}.issue-bar strong{color:var(--color-ink);font-weight:600}.issue-bar .issue-breaking{color:var(--color-breaking);font-weight:700;letter-spacing:.18em}article h1{font-family:var(--font-display);font-weight:800;font-size:clamp(1rem,4vw,3rem);line-height:1.02;letter-spacing:-.02em;color:var(--color-ink);margin-top:var(--space-md);margin-bottom:var(--space-sm);white-space:nowrap}article>time{display:inline-block;font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.15em;text-transform:uppercase;color:var(--color-breaking);margin-bottom:var(--space-xs)}article h2{font-family:var(--font-display);font-weight:800;font-size:clamp(1.75rem,1.2rem + 2vw,2.75rem);line-height:1;letter-spacing:-.02em;color:var(--color-ink);margin-top:var(--space-2xl);margin-bottom:var(--space-md);padding-bottom:var(--space-xs);text-transform:uppercase;position:relative}article>time+h2{margin-top:var(--space-md)}article h2:after{content:"";display:block;height:3px;background:var(--color-ink);margin-top:var(--space-xs);box-shadow:0 6px 0 -5px var(--color-ink)}article{counter-reset:top20}article h3:has(>a){counter-increment:top20;display:grid;grid-template-columns:auto 1fr;column-gap:var(--space-md);align-items:center;margin-top:var(--space-xl);padding-top:var(--space-md);padding-bottom:0;border-top:1px solid var(--color-rule);font-family:var(--font-display);font-weight:700;font-size:var(--text-h3);line-height:1.2;letter-spacing:-.01em;color:var(--color-ink);text-transform:none}article h3:has(>a):before{content:counter(top20,decimal-leading-zero);font-family:var(--font-mono);font-weight:500;font-size:var(--text-number-sm);font-variant-numeric:tabular-nums;color:var(--color-ink-40);line-height:1;letter-spacing:-.02em}article h3:has(>a) .h3-trail{grid-column:2}article h3:has(>a)>a{color:var(--color-ink);text-decoration:none;background-image:linear-gradient(to right,currentColor,currentColor);background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;transition:background-size var(--duration-normal) var(--ease-out-expo)}article h3:has(>a)>a:hover,article h3:has(>a)>a:focus-visible{background-size:100% 1px}article h3:has(>a)+p{grid-column:1 / -1;margin:var(--space-2xs) 0 0;padding-left:calc(var(--text-number-sm) + var(--space-md));font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.06em;text-transform:uppercase;color:var(--color-ink-60)}article h3:has(>a)+p strong{font-weight:600;color:var(--color-ink-80)}article h3:has(>a)+p+ul{grid-column:1 / -1;list-style:none;margin:var(--space-sm) 0 0;padding-left:calc(var(--text-number-sm) + var(--space-md));padding-top:var(--space-sm);border-top:1px solid var(--color-rule-soft);max-width:var(--max-content)}article h3:has(>a)+p+ul li{position:relative;margin-bottom:var(--space-xs);padding-left:1rem;font-size:clamp(.9375rem,.9rem + .25vw,1.0625rem);line-height:1.75;color:var(--color-ink-80)}article h3:has(>a)+p+ul li:before{content:"";position:absolute;left:0;top:.7em;width:.5rem;height:1px;background:var(--color-ink-40)}article h3:has(>a):nth-of-type(1){grid-template-columns:auto 1fr;column-gap:clamp(1rem,.5rem + 2vw,2.5rem);padding-top:var(--space-lg);padding-bottom:var(--space-xs);border-top:3px solid var(--color-ink);font-size:clamp(1.5rem,1.1rem + 1.6vw,2.5rem);font-weight:800;line-height:1.02;letter-spacing:-.025em;max-width:100%}article h3:has(>a):nth-of-type(1):before{content:"01";font-size:var(--text-number-lg);font-weight:800;-webkit-text-stroke:1.5px var(--color-ink);color:transparent;line-height:.85;letter-spacing:-.05em}article h3:has(>a):nth-of-type(1)+p{padding-left:0;border-top:1px solid var(--color-ink);padding-top:var(--space-xs);margin-top:var(--space-sm);color:var(--color-breaking)}article h3:has(>a):nth-of-type(1)+p+ul{padding-left:0;border-top:none;padding-top:0;margin-top:var(--space-sm)}article h3:has(>a):nth-of-type(1)+p+ul li{font-size:clamp(1.0625rem,1rem + .4vw,1.25rem);line-height:1.75;color:var(--color-ink)}article h3:has(>a):nth-of-type(1)+p+ul li:first-child{font-family:var(--font-display);font-weight:500;font-size:clamp(1.25rem,1.05rem + .7vw,1.5rem);line-height:1.55;padding-bottom:var(--space-sm);margin-bottom:var(--space-sm);border-bottom:1px dotted var(--color-rule)}article h3:has(>a):nth-of-type(n+2):nth-of-type(-n+5){font-size:clamp(1.375rem,1.1rem + 1vw,1.875rem);line-height:1.15;font-weight:800}article h3:has(>a):nth-of-type(n+2):nth-of-type(-n+5):before{font-size:var(--text-number-md);font-weight:800;color:var(--color-ink)}article h3:has(>a):nth-of-type(n+6){margin-top:var(--space-md);padding-top:var(--space-sm);font-size:clamp(1.0625rem,1rem + .4vw,1.25rem);font-weight:600;line-height:1.4;font-family:var(--font-body)}article h3:has(>a):nth-of-type(n+6):before{font-size:var(--text-number-sm);font-weight:500}article h3:has(>a):nth-of-type(n+6)+p{padding-left:calc(var(--text-number-sm) + var(--space-md));margin-top:var(--space-2xs)}article h3:has(>a):nth-of-type(n+6)+p+ul{padding-top:var(--space-xs);margin-top:var(--space-xs)}article h3:has(>a):nth-of-type(n+6)+p+ul li:nth-child(n+3){display:none}article hr{border:none;height:0;margin:0}article h3:not(:has(>a)){display:flex;align-items:baseline;gap:var(--space-md);margin-top:var(--space-2xl);margin-bottom:var(--space-md);padding-bottom:var(--space-xs);font-family:var(--font-display);font-size:clamp(1.375rem,1.1rem + 1.2vw,2rem);font-weight:800;line-height:1;letter-spacing:.01em;text-transform:uppercase;color:var(--color-ink);border-bottom:2px solid var(--color-ink)}article h3:not(:has(>a)):after{content:"";flex:1;height:1px;background:var(--color-ink);align-self:center;margin-bottom:.35em}article table{display:block;width:100%;margin-bottom:var(--space-xl);background:transparent;border:none;border-collapse:collapse}article thead{display:none}article tbody{display:grid;grid-template-columns:repeat(2,1fr);column-gap:var(--space-lg);row-gap:0;border-top:1px solid var(--color-rule)}@media(max-width:720px){article tbody{grid-template-columns:1fr}}article tbody tr{display:grid;grid-template-columns:auto 1fr;column-gap:var(--space-md);padding:var(--space-sm) 0;border-bottom:1px solid var(--color-rule);transition:background-color var(--duration-fast)}article tbody tr:hover{background-color:var(--color-paper-deep)}article tbody td{padding:0;border:none;vertical-align:top;font-size:var(--text-sm);line-height:1.5}article tbody td:first-child{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:var(--text-xs);color:var(--color-ink-40);letter-spacing:.05em;padding-top:.15em;min-width:2ch;text-align:right}article tbody td:nth-child(2){grid-column:2;font-family:var(--font-display);font-weight:600;font-size:var(--text-base);line-height:1.3;letter-spacing:-.01em;margin-bottom:var(--space-2xs)}article tbody td:nth-child(2) a{color:var(--color-ink);text-decoration:none;background-image:linear-gradient(to right,var(--color-ink),var(--color-ink));background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;transition:background-size var(--duration-normal) var(--ease-out-expo)}article tbody td:nth-child(2) a:hover,article tbody td:nth-child(2) a:focus-visible{background-size:100% 1px}article tbody td:nth-child(3){grid-column:2;color:var(--color-ink-80);font-size:var(--text-sm);line-height:1.65}article tbody td:nth-child(4):not(:last-child){grid-column:2;font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.04em;color:var(--color-ink-40);margin-top:var(--space-2xs)}article tbody td:last-child{grid-column:2;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:var(--text-xs);letter-spacing:.06em;color:var(--color-ink-40)}article p{margin-bottom:var(--space-sm);color:var(--color-ink-80);font-size:var(--text-sm);line-height:1.7;max-width:var(--max-content)}article ul,article ol{margin-bottom:var(--space-md);padding-left:1.25rem}article li{margin-bottom:var(--space-2xs);font-size:var(--text-sm);line-height:1.65;color:var(--color-ink-80)}article li::marker{color:var(--color-breaking)}article a{color:var(--color-ink);text-decoration:underline;text-decoration-color:var(--color-rule);text-underline-offset:3px;text-decoration-thickness:1px;transition:text-decoration-color var(--duration-fast)}article a:hover,article a:focus-visible{text-decoration-color:var(--color-accent);text-decoration-thickness:2px}article blockquote{padding:var(--space-sm) 0;border-left:none;border-top:1px solid var(--color-rule);border-bottom:1px solid var(--color-rule);margin-bottom:var(--space-md);font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.04em;color:var(--color-ink-60);text-transform:uppercase}article blockquote p{margin-bottom:.125rem;font-size:var(--text-xs)}article blockquote p:last-child{margin-bottom:0}article strong{font-weight:700;color:var(--color-ink)}article code{font-family:var(--font-mono);background:var(--color-paper-deep);padding:.1rem .35rem;font-size:.85em}article pre{background:var(--color-code-bg);color:var(--color-ink);padding:var(--space-md);overflow-x:auto;margin-bottom:var(--space-md);font-family:var(--font-mono);font-size:var(--text-sm);line-height:1.6;border:1px solid var(--color-rule)}article pre code{background:none;padding:0;color:inherit}.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:var(--space-2xl);padding-top:var(--space-md);border-top:3px solid var(--color-ink);border-bottom:1px solid var(--color-ink)}.post-nav a{display:block;padding:var(--space-md) var(--space-sm);text-decoration:none;color:var(--color-ink);transition:background-color var(--duration-fast)}.post-nav a:first-child{border-right:1px solid var(--color-rule)}.post-nav a:only-child{grid-column:1 / -1;border-right:none}.post-nav a:hover,.post-nav a:focus-visible{background-color:var(--color-paper-deep)}.post-nav-label{display:block;font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.18em;text-transform:uppercase;color:var(--color-breaking);margin-bottom:var(--space-xs);font-weight:600}.post-nav-title{display:block;font-family:var(--font-display);font-size:clamp(1rem,.95rem + .4vw,1.25rem);font-weight:700;line-height:1.2;letter-spacing:-.01em}.post-nav-next{text-align:right}@media(max-width:640px){.post-nav{grid-template-columns:1fr}.post-nav a:first-child{border-right:none;border-bottom:1px solid var(--color-rule)}.post-nav-next{text-align:left}}footer{margin-top:var(--space-2xl);padding-top:var(--space-md);padding-bottom:var(--space-md);border-top:1px solid var(--color-ink);box-shadow:0 -4px 0 -3px var(--color-ink);font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.12em;text-transform:uppercase;color:var(--color-ink-60);text-align:center;line-height:1.7}footer strong{color:var(--color-ink);letter-spacing:.2em;font-weight:700}a:focus-visible,button:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:2px}[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity var(--duration-normal) var(--ease-out-expo),transform var(--duration-normal) var(--ease-out-expo);will-change:opacity,transform}[data-reveal].is-visible{opacity:1;transform:translateY(0)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition-duration:0ms!important;animation-duration:0ms!important}[data-reveal]{opacity:1;transform:none}}