:root{
  --blue:#3bb1ff;
  --red:#ff5252;
  --ink:#000;
  --paper:#fff;
  --bg:#f4f7fa;
  --tint:#e2f3ff;
  --soft:#fdeeee;
  --mono:"Roboto Mono",ui-monospace,Menlo,Consolas,monospace;
  --sans:"Exo",system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --sh:5px 5px 0 var(--ink);
  --sh-s:3px 3px 0 var(--ink);
}

*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.7;
  font-weight:400;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-weight:700;
  line-height:1.25;
  margin:0 0 .7em;
  letter-spacing:.005em;
}

h2>span,h3>span{
  display:inline-block;
  position:relative;
  padding-bottom:.16em;
}

h2>span::after,
h3>span::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:6px;
  border:2px solid var(--ink);
  border-radius:3px;
  background:var(--red);
}

h3>span::after{background:var(--blue)}

p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}

a{color:var(--ink)}
a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:3px solid var(--red);
  outline-offset:2px;
}

img{max-width:100%;height:auto;display:block}

ul,ol{margin:0 0 1.05em;padding-left:1.35em}
li{margin:.3em 0}
li::marker{color:var(--red);font-weight:700}

.bar{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  padding:16px 20px;
  background:var(--paper);
  border-bottom:3px solid var(--ink);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:46px;
  padding:5px 13px;
  border:3px solid var(--ink);
  border-radius:10px;
  background:var(--blue);
  box-shadow:var(--sh-s);
  text-decoration:none;
  font-weight:700;
  font-size:1.02rem;
  letter-spacing:.02em;
}

.brand:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--ink)}

.brand-i{
  width:24px;
  height:24px;
  flex:0 0 24px;
  border:2px solid var(--ink);
  border-radius:4px;
  background:var(--paper);
  object-fit:cover;
}

.brand-n{white-space:nowrap}

.find{
  display:flex;
  align-items:stretch;
  flex:1 1 250px;
  max-width:430px;
  margin-left:auto;
  border:3px solid var(--ink);
  border-radius:10px;
  background:var(--paper);
  box-shadow:var(--sh-s);
  overflow:hidden;
}

.find-l{
  display:flex;
  align-items:center;
  padding:0 11px;
  background:var(--blue);
  border-right:3px solid var(--ink);
  font-weight:700;
  font-size:.92rem;
  white-space:nowrap;
}

.find-i{
  flex:1 1 auto;
  min-width:0;
  min-height:44px;
  border:0;
  padding:9px 12px;
  font:inherit;
  font-size:1rem;
  color:var(--ink);
  background:var(--paper);
}

.find-i:focus{outline-offset:-3px}

.find-b{
  border:0;
  border-left:3px solid var(--ink);
  background:var(--red);
  color:var(--paper);
  font:inherit;
  font-weight:700;
  padding:0 15px;
  min-height:44px;
  cursor:pointer;
  letter-spacing:.06em;
}

.find-b:hover{background:var(--ink)}

.dockbar{
  position:sticky;
  top:0;
  z-index:40;
  background:var(--paper);
  border-bottom:3px solid var(--ink);
  box-shadow:0 4px 0 rgba(0,0,0,.12);
}

.dock{
  max-width:1200px;
  margin:0 auto;
  padding:9px 20px;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scrollbar-width:thin;
}

.dock-list{
  display:flex;
  gap:9px;
  list-style:none;
  margin:0;
  padding:0;
  width:max-content;
}

.dock-list a{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:42px;
  padding:7px 13px;
  border:3px solid var(--ink);
  border-radius:10px;
  background:var(--paper);
  box-shadow:var(--sh-s);
  text-decoration:none;
  font-weight:600;
  font-size:.96rem;
  white-space:nowrap;
}

.dock-list a:hover{background:var(--tint);transform:translate(-1px,-1px)}
.dock-list a.on{background:var(--red);color:var(--paper)}

.ico{display:inline-flex;width:16px;height:16px;flex:0 0 16px}

.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 296px;
  gap:30px;
  align-items:start;
  max-width:1200px;
  margin:0 auto;
  padding:30px 20px 44px;
}

main{min-width:0}

div>section{
  background:var(--paper);
  border:3px solid var(--ink);
  border-radius:10px;
  box-shadow:var(--sh);
  padding:28px 26px;
  margin:0 0 30px;
}

div>section[id]{scroll-margin-top:118px}

div>section:last-child{margin-bottom:0}

div h2{font-size:clamp(1.34rem,1.1rem + 1.1vw,1.86rem);margin-top:.2em}
div h3{font-size:clamp(1.1rem,1rem + .55vw,1.32rem)}
div h2:not(:first-child),
div h3:not(:first-child){margin-top:1.5em}

div a{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
div a:hover{background:var(--tint)}

div ul,
div ol{padding-left:1.3em}

div blockquote{
  margin:1.2em 0;
  padding:14px 18px;
  border:3px solid var(--ink);
  border-radius:10px;
  background:var(--soft);
  box-shadow:var(--sh-s);
}

div blockquote p:last-child{margin-bottom:0}

div code{
  font-family:var(--mono);
  font-size:.94em;
  background:var(--tint);
  border:2px solid var(--ink);
  border-radius:5px;
  padding:.05em .35em;
}

div pre{
  font-family:var(--mono);
  font-size:.94rem;
  line-height:1.6;
  background:var(--ink);
  color:var(--paper);
  border-radius:10px;
  padding:16px;
  overflow-x:auto;
}

div pre code{background:none;border:0;color:inherit;padding:0}

div table{
  width:100%;
  border-collapse:collapse;
  font-size:.98rem;
  margin:0 0 1.1em;
}

div th,
div td{
  border:2px solid var(--ink);
  padding:9px 11px;
  text-align:left;
}

div th{background:var(--tint);font-weight:700}

div figure{margin:1.2em 0}
div figcaption{font-size:.92rem;margin-top:.5em}

.hero{
  display:grid !important;
  grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:26px;
  align-items:center;
  min-height:68vh;
  padding:34px 30px !important;
  background:var(--blue) !important;
  overflow:hidden;
}

.hero-copy{min-width:0}

.hero-h1{
  font-size:clamp(1.9rem,1.25rem + 2.6vw,3.1rem);
  line-height:1.14;
  letter-spacing:-.01em;
  margin:0 0 .7em;
  max-width:22ch;
}

.hero-jump{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:0;
}

.hero-jump a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:8px 16px;
  border:3px solid var(--ink);
  border-radius:10px;
  background:var(--paper);
  box-shadow:var(--sh-s);
  text-decoration:none;
  font-weight:700;
  font-size:.97rem;
}

.hero-jump a:hover{background:var(--red);color:var(--paper);transform:translate(-1px,-1px)}

.hero-art{
  border:3px solid var(--ink);
  border-radius:10px;
  box-shadow:var(--sh);
  background:var(--paper);
  aspect-ratio:4 / 3;
  overflow:hidden;
}

.hero-img{width:100%;height:100%;object-fit:cover}

.hero-blank{display:block;width:100%;height:100%;background:var(--paper)}

.rail{
  position:sticky;
  top:96px;
  padding:18px;
  background:var(--paper);
  border:3px solid var(--ink);
  border-radius:10px;
  box-shadow:var(--sh);
}

.rail-h{
  font-size:1.05rem;
  margin:0 0 .85em;
}

.rail-h:not(:first-child){margin-top:1.4em}

.rail-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:8px;
}

.rail-list a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:8px 12px;
  border:2px solid var(--ink);
  border-radius:8px;
  background:var(--paper);
  box-shadow:var(--sh-s);
  text-decoration:none;
  font-size:.96rem;
  font-weight:600;
  line-height:1.35;
}

.rail-list a:hover{background:var(--tint)}
.rail-list a.on{background:var(--ink);color:var(--paper)}
.rail-list li[hidden]{display:none}

.rail-top{margin:0}

.rail-top a{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:8px 16px;
  border:3px solid var(--ink);
  border-radius:10px;
  background:var(--red);
  color:var(--paper);
  box-shadow:var(--sh-s);
  text-decoration:none;
  font-weight:700;
}

.foot{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  justify-content:space-between;
  padding:16px 20px;
  background:var(--ink);
  color:var(--paper);
  border-top:3px solid var(--ink);
}

.foot-b a{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:42px;
  padding:4px 12px;
  border:3px solid var(--paper);
  border-radius:10px;
  color:var(--paper);
  text-decoration:none;
  font-weight:700;
}

.foot-b a:hover{background:var(--blue);color:var(--ink);border-color:var(--blue)}
.foot-b .brand-i{border-color:var(--paper);background:var(--ink)}

.foot-nav ul{
  display:flex;
  flex-wrap:wrap;
  gap:2px 8px;
  list-style:none;
  margin:0;
  padding:0;
}

.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:6px 8px;
  color:var(--paper);
  text-decoration:none;
  font-size:.95rem;
  border-bottom:2px solid transparent;
}

.foot-nav a:hover{color:var(--blue);border-bottom-color:var(--blue)}

.foot-copy{
  margin:0;
  font-family:var(--mono);
  font-size:.9rem;
  color:#c9d2d8;
  letter-spacing:.04em;
}

html.js div>section.rv{opacity:0;transform:translateY(16px)}
html.js div>section.rv.in{
  opacity:1;
  transform:none;
  transition:opacity .42s ease,transform .42s ease;
}

@media (max-width:980px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .rail{position:static;order:2}
  .rail-list{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));display:grid}
}

@media (max-width:780px){
  body{font-size:16.5px}
  .bar{padding:13px 14px;gap:10px}
  .find{max-width:none;flex:1 1 100%;margin-left:0}
  .dock{padding:8px 14px}
  .layout{padding:20px 14px 34px;gap:22px}
  .hero{grid-template-columns:minmax(0,1fr);min-height:0;padding:24px 18px !important;gap:18px}
  .hero-art{aspect-ratio:16 / 10}
  .hero-h1{max-width:none}
  div>section{padding:20px 16px;margin-bottom:22px}
  div>section[id]{scroll-margin-top:104px}
  .foot{justify-content:flex-start}
  .foot-copy{width:100%}
}

@media (max-width:420px){
  .brand{font-size:.96rem;padding:4px 10px}
  .find-l{padding:0 9px;font-size:.86rem}
  .hero-jump a{flex:1 1 auto;justify-content:center}
  .rail-list{grid-template-columns:minmax(0,1fr)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
  html.js div>section.rv{opacity:1;transform:none}
}

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