:root{
  --ink:#000000;
  --paper:#ffffff;
  --line:#000000;
  --rule:#e3e3e3;
  --grey:#585858;
  --r:18px;
  --edge:clamp(1rem,4vw,2.5rem);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Plus Jakarta Sans",system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.65;
  padding-bottom:108px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
h1,h2,h3{margin:0;line-height:1.18;letter-spacing:-.025em}
p{margin:0 0 1rem}
a{color:var(--ink);text-decoration:none}
a:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

.hero{border-bottom:1px solid var(--line)}
.hero-inner{
  position:relative;
  max-width:var(--max);
  margin:0 auto;
  padding:4.4rem var(--edge) 2.4rem;
  min-height:45vh;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:1.4rem;
}
.hero-badge{
  position:absolute;
  top:1.5rem;
  left:var(--edge);
  display:inline-flex;
  align-items:center;
  min-height:34px;
  padding:0 1rem;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:.85rem;
  font-weight:700;
  letter-spacing:.16em;
}
.hero-text{text-align:right}
.hero-text h1{font-size:clamp(1.7rem,5.2vw,3.5rem);font-weight:800}
.hero-art{width:clamp(80px,15vw,164px)}

.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:2.6rem var(--edge) 3rem;
  display:grid;
  grid-template-columns:minmax(0,1fr) 15rem;
  gap:clamp(1.5rem,4vw,3rem);
  align-items:start;
}
.stream{min-width:0}
.stream section{counter-reset:sec}
.stream section > div{
  border-top:1px solid var(--line);
  padding:2.4rem 0;
  scroll-margin-top:3rem;
}
.stream section > div:first-child{border-top:0;padding-top:0}
.stream section > div:last-child{padding-bottom:0}
.stream section h2{
  font-size:clamp(1.3rem,3vw,1.95rem);
  font-weight:800;
  counter-increment:sec;
  display:flex;
  align-items:baseline;
  gap:.7rem;
  margin-bottom:.2rem;
}
.stream section h2::before{
  content:counter(sec,decimal-leading-zero);
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--grey);
  flex:0 0 auto;
}
.stream section h3{font-size:1.15rem;font-weight:700;margin:1.6rem 0 .5rem}
.stream section p,.stream section li{max-width:70ch}
.stream section ul,.stream section ol{padding-left:1.3rem;margin:0 0 1rem}
.stream section li{margin-bottom:.35rem}
.stream section a{
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:2px;
  transition:background .22s ease,color .22s ease;
}
.stream section a:hover{background:var(--ink);color:var(--paper);text-decoration:none}
.stream section blockquote{
  margin:1.4rem 0;
  padding:.2rem 0 .2rem 1.1rem;
  border-left:3px solid var(--line);
  color:var(--grey);
}
hr{
  border:0;
  border-top:3px solid var(--line);
  width:3rem;
  margin:1rem 0;
}
.stream section figure{margin:1.4rem 0}

.rail{
  order:2;
  position:sticky;
  top:1.25rem;
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:1.1rem 1rem 1.3rem;
  background:var(--paper);
}
.rail h2{font-size:.82rem;font-weight:700;letter-spacing:.2em}
.rail hr{width:100%;border-top:1px solid var(--line);margin:.7rem 0 .3rem}
.rail ul{list-style:none;margin:0;padding:0}
.rail a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:.15rem .1rem;
  font-size:.95rem;
  line-height:1.4;
  border-bottom:1px solid var(--rule);
  transition:background .22s ease,color .22s ease,padding-left .22s ease;
}
.rail li:last-child a{border-bottom:0}
.rail a:hover,.rail a:focus-visible{
  background:var(--ink);
  color:var(--paper);
  padding-left:.6rem;
  text-decoration:none;
}

.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:30;
  display:flex;
  align-items:center;
  gap:.5rem;
  background:var(--paper);
  border-top:1px solid var(--line);
  padding-block:.6rem;
  padding-inline:max(.75rem,calc((100vw - 1200px)/2));
}
.dock-nav{flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none}
.dock-nav::-webkit-scrollbar{display:none}
.dock-nav ul{
  display:flex;
  align-items:center;
  justify-content:center;
  justify-content:safe center;
  gap:.35rem;
  list-style:none;
  margin:0;
  padding:0;
}
.dock-nav a,.dock-brand,.dock-cta{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 .9rem;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:1rem;
  white-space:nowrap;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.dock-brand{font-weight:800;letter-spacing:.02em}
.dock-nav a:hover,.dock-nav a:focus-visible{
  background:var(--ink);
  color:var(--paper);
  transform:translateY(-2px);
}
.dock-cta{
  flex:0 0 auto;
  background:var(--ink);
  color:var(--paper);
  font-weight:700;
}
.dock-cta:hover,.dock-cta:focus-visible{background:var(--paper);color:var(--ink)}

footer{
  max-width:var(--max);
  margin:3rem auto 0;
  padding:2.5rem var(--edge) 1.4rem;
  border-top:1px solid var(--line);
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);
  gap:2rem 2.5rem;
  align-items:start;
}
.foot-name{font-size:1.35rem;font-weight:800;letter-spacing:-.02em;margin:0 0 .5rem}
.foot-desc{margin:0;color:var(--grey);max-width:40ch;font-size:1rem}
.foot-links ul{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 .9rem;
}
.foot-links a{
  display:flex;
  align-items:center;
  min-height:42px;
  font-size:.98rem;
  border-bottom:1px solid var(--rule);
  transition:background .22s ease,color .22s ease,padding-left .22s ease;
}
.foot-links a:hover,.foot-links a:focus-visible{
  background:var(--ink);
  color:var(--paper);
  padding-left:.5rem;
}
.baseline{
  grid-column:1/-1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  border-top:1px solid var(--line);
  margin-top:1.4rem;
  padding-top:.4rem;
  font-size:.95rem;
}
.baseline a{display:inline-flex;align-items:center;min-height:44px;padding:0 .3rem}
.baseline a:hover{text-decoration:underline;text-underline-offset:3px}

@media (max-width:1040px){
  .dock-cta{display:none}
  .dock-nav ul{justify-content:flex-start}
}
@media (max-width:900px){
  .wrap{grid-template-columns:minmax(0,1fr)}
  .rail{order:3;position:static;margin-top:1rem}
}
@media (max-width:760px){
  body{font-size:16px;padding-bottom:112px}
  footer{grid-template-columns:minmax(0,1fr);gap:1.6rem}
  .foot-links ul{grid-template-columns:1fr}
  .hero-inner{padding-top:4rem}
}

@media (prefers-reduced-motion:no-preference){
  .stream section > div{animation:rise .5s both cubic-bezier(.2,.7,.3,1)}
  .stream section > div:nth-child(2){animation-delay:.05s}
  .stream section > div:nth-child(3){animation-delay:.1s}
  .stream section > div:nth-child(4){animation-delay:.15s}
  .stream section > div:nth-child(5){animation-delay:.2s}
  .stream section > div:nth-child(6){animation-delay:.25s}
  .stream section > div:nth-child(7){animation-delay:.3s}
  .rail li{animation:rise .4s both cubic-bezier(.2,.7,.3,1)}
  .rail li:nth-child(2){animation-delay:.04s}
  .rail li:nth-child(3){animation-delay:.08s}
  .rail li:nth-child(4){animation-delay:.12s}
  .rail li:nth-child(5){animation-delay:.16s}
  .rail li:nth-child(6){animation-delay:.2s}
  .rail li:nth-child(7){animation-delay:.24s}
}
@keyframes rise{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none !important;transition:none !important}
}

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