:root{
  --ink:#000000;
  --paper:#ffffff;
  --max:1440px;
  --line:rgba(0,0,0,.18);
  --font-sans:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"Fira Code","Share Tech Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-sans);font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.12}
p{margin:0}
a{color:inherit}
img{max-width:100%}
a:focus-visible,button:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

.masthead{border-bottom:1px solid var(--ink);background:var(--paper)}
.masthead-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;max-width:var(--max);margin:0 auto}
.brand{display:inline-flex;align-items:center;min-height:44px;padding:4px 0;text-decoration:none;font-size:26px;font-weight:700;letter-spacing:-.035em;line-height:1}
.contact{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--ink);font-family:var(--font-mono);font-size:16px;text-decoration:none;transition:background .18s ease,color .18s ease}
.contact:hover,.contact:focus-visible{background:var(--ink);color:var(--paper)}
.masthead-nav{background:var(--ink);border-top:1px solid var(--ink)}
.masthead-nav p{display:flex;flex-wrap:wrap;max-width:var(--max);margin:0 auto;padding:4px 8px}
.masthead-nav a{display:flex;align-items:center;min-height:48px;padding:0 10px;color:var(--paper);text-decoration:none;font-family:var(--font-mono);font-size:16px;letter-spacing:.01em;border-right:1px solid rgba(255,255,255,.28);transition:background .18s ease,color .18s ease}
.masthead-nav a:hover,.masthead-nav a:focus-visible{background:var(--paper);color:var(--ink)}

.hero{position:relative;display:grid;grid-template-columns:repeat(12,1fr);min-height:74svh;background:var(--ink);color:var(--paper);overflow:hidden}
.hero-media{position:absolute;inset:0;margin:0;z-index:0}
.hero-img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.04)}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(168deg,rgba(0,0,0,.32),rgba(0,0,0,.88))}
.hero-grid{position:absolute;inset:0;z-index:1;pointer-events:none;background-image:repeating-linear-gradient(to right,rgba(255,255,255,.16) 0,rgba(255,255,255,.16) 1px,transparent 1px,transparent 8.3333%)}
.hero-copy{position:relative;z-index:2;grid-column:1/-1;align-self:start;padding:52px 20px 44px}
.kicker{font-family:var(--font-mono);font-size:16px;font-weight:400;letter-spacing:.2em;line-height:1;margin-bottom:20px}
.kicker span{display:inline-block;padding-bottom:8px;border-bottom:2px solid var(--paper)}
.hero h1{font-size:clamp(34px,9vw,62px);line-height:1.04;letter-spacing:-.035em}
.hero-desc{margin-top:20px;max-width:44ch;font-size:17px;color:rgba(255,255,255,.78)}

.board{max-width:var(--max);margin:0 auto;padding:0 16px}
.rail{padding:28px 0 20px;border-bottom:1px solid var(--ink)}
.rail-title{font-family:var(--font-mono);font-size:16px;font-weight:500;letter-spacing:.18em}
.rail-title span{display:inline-block;padding-bottom:8px;border-bottom:2px solid var(--ink)}
.rail-list{display:grid;grid-template-columns:1fr 1fr;gap:0 16px;margin-top:6px}
.rail-list a{display:flex;align-items:center;min-height:46px;padding:4px 0;font-size:16px;text-decoration:none;border-bottom:1px solid var(--line);transition:background .16s ease,color .16s ease,padding .16s ease}
.rail-list a:hover,.rail-list a:focus-visible{background:var(--ink);color:var(--paper);padding-left:8px;padding-right:8px}
.totop{display:inline-flex;align-items:center;min-height:44px;margin-top:12px;font-family:var(--font-mono);font-size:16px;text-decoration:none;border-bottom:1px solid var(--ink)}

.stream{counter-reset:sec;padding-bottom:24px}
.stream > article{position:relative;padding:40px 0 48px;border-bottom:1px solid var(--ink)}
.stream > article::before{counter-increment:sec;content:counter(sec,decimal-leading-zero);display:block;margin-bottom:14px;font-family:var(--font-mono);font-size:16px;letter-spacing:.16em}
article[id]{scroll-margin-top:16px}
.stream h2{font-size:clamp(24px,5.2vw,38px);margin-bottom:.58em}
.stream h2 span,.stream h3 span{display:inline-block}
.stream h3{font-size:20px;margin:1.4em 0 .5em}
.stream p{margin-bottom:1em;max-width:66ch}
.stream ul,.stream ol{margin:0 0 1em;padding-left:1.3em;max-width:66ch}
.stream li{margin:.35em 0}
.stream strong{font-weight:700}
.stream a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.stream figure{margin:24px 0}
.stream figure img{width:100%;height:auto;display:block;filter:grayscale(1)}
.stream figcaption{margin-top:8px;padding-top:8px;border-top:1px solid var(--ink);font-family:var(--font-mono);font-size:16px}
.stream table{width:100%;border-collapse:collapse;margin:0 0 1.2em;font-size:16px}
.stream th,.stream td{padding:10px 8px;border-bottom:1px solid var(--ink);text-align:left;vertical-align:top}
.stream th{font-family:var(--font-mono);font-weight:500;letter-spacing:.06em}
.stream blockquote{margin:0 0 1.2em;padding:4px 0 4px 16px;border-left:3px solid var(--ink)}
.stream aside{margin:24px 0;padding:16px;background:var(--ink);color:var(--paper)}
.stream time{font-family:var(--font-mono);font-size:16px}

.foot{margin:0;background:var(--ink);color:var(--paper);padding:36px 16px 24px;display:grid;grid-template-columns:1fr;gap:14px}
.foot-mark{font-size:clamp(38px,13vw,116px);line-height:.88;font-weight:700;letter-spacing:-.05em;word-break:break-word}
.foot-copy{order:2;font-family:var(--font-mono);font-size:16px;color:rgba(255,255,255,.72)}
.foot-links{order:3;display:flex;flex-wrap:wrap;gap:8px 20px;font-family:var(--font-mono);font-size:16px}
.foot-links a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.4)}
.foot a:focus-visible,.masthead-nav a:focus-visible{outline-color:var(--paper)}

.anim .stream > article{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.anim .stream > article.is-in{opacity:1;transform:none}
.progress{position:fixed;left:0;right:0;bottom:0;z-index:60;height:3px;background:var(--paper);mix-blend-mode:difference;transform:scaleX(0);transform-origin:0 50%;pointer-events:none}

@media (min-width:901px){
  .masthead-top{padding:18px 32px 14px}
  .brand{font-size:30px}
  .masthead-nav p{padding:0 24px;flex-wrap:nowrap}
  .masthead-nav a{padding:0 18px}
  .hero{min-height:100svh}
  .hero-copy{grid-column:3/-1;align-self:end;text-align:right;padding:0 32px 9vh}
  .hero-desc{margin-left:auto}
  .board{display:grid;grid-template-columns:260px minmax(0,1fr);gap:56px;padding:0 32px}
  .rail{position:sticky;top:24px;align-self:start;padding:56px 24px 40px 0;border-bottom:0;border-right:1px solid var(--ink)}
  .rail-list{grid-template-columns:1fr}
  .stream{padding-top:56px}
  .stream > article{padding:48px 0 64px}
  article[id]{scroll-margin-top:24px}
  .foot{grid-template-columns:1fr auto;align-items:end;padding:48px 32px 28px}
  .foot-mark{grid-column:1/-1}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .anim .stream > article{opacity:1;transform:none;transition:none}
  .hero-img{transition:none}
}

button[aria-expanded]{min-width:44px;min-height:44px}