:root{
  --pink:#FF4D6D;
  --blue:#1B1B3A;
  --yellow:#FFC93C;
  --paper:#FFF7F2;
  --display:'Righteous','Poppins','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --ui:'Poppins','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-bottom:calc(84px + env(safe-area-inset-bottom));
  font:16px/1.6 var(--ui);
  color:var(--blue);
  background:var(--paper);
}
img{max-width:100%}
a{-webkit-tap-highlight-color:transparent}
h1,h2,h3{font-family:var(--display);font-weight:400}

.topbar{
  position:fixed;
  inset:0 0 auto;
  z-index:80;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 16px;
  pointer-events:none;
}
.topbar>*{pointer-events:auto}
.mark{
  width:46px;height:46px;
  display:grid;place-items:center;
  background:var(--pink);
  color:#fff;
  border:2px solid var(--blue);
  border-radius:10px;
  font-family:var(--display);
  font-size:20px;
  text-decoration:none;
  overflow:hidden;
  transition:background .18s ease;
}
.mark img{width:100%;height:100%;object-fit:cover;display:block}
.mark:hover{background:var(--blue);color:var(--yellow)}
.burger{
  min-width:46px;height:46px;
  padding:0 14px;
  background:var(--yellow);
  color:var(--blue);
  border:2px solid var(--blue);
  border-radius:10px;
  font:600 16px/1 var(--ui);
  letter-spacing:.06em;
  cursor:pointer;
  transition:background .18s ease,color .18s ease;
}
.burger:hover{background:var(--pink);color:#fff}

.sheet{
  position:fixed;
  inset:0;
  z-index:75;
  display:grid;
  place-items:center;
  padding:96px 22px 110px;
  background:rgba(27,27,58,.97);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  opacity:0;
  visibility:hidden;
  transition:opacity .18s ease,visibility .18s ease;
}
.sheet.on{opacity:1;visibility:visible}
.sheet ul{
  list-style:none;
  margin:0;padding:0;
  width:min(430px,100%);
  display:grid;
  gap:4px;
}
.sheet a{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:50px;
  padding:10px 4px;
  color:#fff;
  text-decoration:none;
  font-size:18px;
  border-bottom:2px solid rgba(255,255,255,.16);
  transition:color .18s ease,transform .18s ease;
}
.sheet a em{
  font-style:normal;
  font-family:var(--display);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--pink);
}
.sheet a:hover{color:var(--yellow);transform:translateX(4px)}

.cover{
  position:relative;
  min-height:100vh;
  min-height:100svh;
  display:grid;
  place-items:center;
  text-align:center;
  background:var(--blue);
  border-bottom:8px solid var(--pink);
  overflow:hidden;
}
.cover-img{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  object-fit:cover;
}
.cover-veil{position:absolute;inset:0;background:rgba(27,27,58,.6)}
.cover-in{
  position:relative;
  z-index:2;
  padding:120px 22px 140px;
  max-width:840px;
}
.cover-in h1{
  margin:0 0 20px;
  font-size:clamp(2rem,9vw,4.4rem);
  line-height:1.06;
  color:#fff;
  letter-spacing:.01em;
}
.cover-in h2{
  margin:0 0 8px;
  font-size:clamp(1.1rem,4.4vw,1.5rem);
  color:var(--yellow);
  letter-spacing:.06em;
}
.subtitle{
  margin:0;
  font-size:16px;
  letter-spacing:.14em;
  color:var(--pink);
  word-break:break-word;
}

.wrap{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 18px;
}
.body{padding:40px 0 56px}
.prose{min-width:0}
.prose>section{
  padding:34px 0;
  border-top:2px dashed rgba(27,27,58,.2);
  scroll-margin-top:84px;
}
.prose>section:first-child{border-top:0;padding-top:0}
.prose h2{
  position:relative;
  margin:0 0 16px;
  padding-left:16px;
  font-size:clamp(1.35rem,5.2vw,2rem);
  line-height:1.22;
  color:var(--blue);
}
.prose h2::before{
  content:"";
  position:absolute;
  left:0;top:.2em;bottom:.2em;
  width:8px;
  background:var(--pink);
  border-radius:2px;
}
.prose h3{
  margin:24px 0 10px;
  font-size:1.12rem;
  color:var(--blue);
}
.prose p{margin:0 0 14px}
.prose a{color:var(--pink);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{background:var(--yellow);color:var(--blue)}
.prose ul,.prose ol{margin:0 0 16px;padding-left:1.25em}
.prose li{margin:0 0 8px}
.prose li::marker{color:var(--pink)}
.prose img{
  display:block;
  margin:0 0 16px;
  border:2px solid var(--blue);
  border-radius:10px;
}
.prose blockquote{
  margin:0 0 16px;
  padding:14px 16px;
  background:#fff;
  border-left:8px solid var(--yellow);
  border-radius:0 10px 10px 0;
}
.prose blockquote p:last-child{margin:0}
.prose table{
  display:block;
  width:100%;
  overflow-x:auto;
  margin:0 0 16px;
  border-collapse:collapse;
}
.prose th,.prose td{
  padding:10px 12px;
  border:2px solid rgba(27,27,58,.18);
  text-align:left;
}
.prose th{background:var(--yellow);font-weight:600}
.prose code{font-size:16px;background:rgba(255,201,60,.35);padding:1px 5px;border-radius:3px}
.prose pre{
  overflow-x:auto;
  padding:14px;
  background:var(--blue);
  color:#fff;
  border-radius:10px;
}
.prose pre code{background:none;padding:0;color:inherit}

.side{
  margin-top:34px;
  padding:16px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border:2px solid var(--blue);
  border-radius:10px;
}
.side h2{
  margin:0 0 10px;
  font-size:18px;
  color:var(--blue);
}
.side ul{list-style:none;margin:0;padding:0}
.side li+li{border-top:1px solid rgba(27,27,58,.16)}
.side a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:10px 0;
  color:var(--blue);
  text-decoration:none;
  transition:color .16s ease,padding-left .16s ease;
}
.side a:hover{color:var(--pink);padding-left:6px}

.foot{
  background:var(--blue);
  color:#fff;
  padding:40px 18px 26px;
  border-top:8px solid var(--yellow);
}
.foot-grid{
  max-width:1180px;
  margin:0 auto;
  display:grid;
  gap:26px;
}
address{
  font-style:normal;
  display:grid;
  gap:6px;
}
address strong{
  font-family:var(--display);
  font-size:20px;
  color:#fff;
  font-weight:400;
}
address code{
  font-family:var(--ui);
  font-size:16px;
  color:var(--yellow);
  overflow-wrap:anywhere;
}
.footnav dl{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:2px 12px;
  margin:0;
}
.footnav dt{
  padding-top:11px;
  font-family:var(--display);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--pink);
}
.footnav dd{margin:0}
.footnav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 0;
  color:#fff;
  text-decoration:none;
  transition:color .16s ease;
}
.footnav a:hover{color:var(--yellow)}

.sub{display:grid;gap:8px;margin-bottom:20px}
.sub label{
  font-size:16px;
  color:var(--yellow);
  letter-spacing:.06em;
}
.sub input{
  min-height:44px;
  padding:10px 12px;
  border:2px solid rgba(255,255,255,.7);
  border-radius:4px;
  background:rgba(255,255,255,.08);
  color:#fff;
  font:16px/1.4 var(--ui);
}
.sub input::placeholder{color:rgba(255,255,255,.55)}
.sub input:focus{outline:2px solid var(--yellow);outline-offset:2px}
.sub button{
  min-height:44px;
  border:0;
  border-radius:4px;
  background:var(--pink);
  color:#fff;
  font:600 16px/1 var(--ui);
  letter-spacing:.08em;
  cursor:pointer;
  transition:background .16s ease,color .16s ease;
}
.sub button:hover{background:var(--yellow);color:var(--blue)}

.links{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:2px 18px;
  margin:0;padding:0;
}
.links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 0;
  color:#fff;
  text-decoration:none;
  transition:color .16s ease;
}
.links a:hover{color:var(--yellow)}

.copy{
  max-width:1180px;
  margin:26px auto 0;
  padding-top:16px;
  border-top:2px solid rgba(255,255,255,.2);
  font-size:16px;
  color:rgba(255,255,255,.72);
}

.dock{
  position:fixed;
  inset:auto 0 0;
  z-index:70;
  background:rgba(27,27,58,.95);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-top:2px solid rgba(255,77,109,.65);
  padding:5px 0 calc(5px + env(safe-area-inset-bottom));
}
.dock ul{
  display:flex;
  gap:2px;
  margin:0;
  padding:0 8px;
  list-style:none;
  overflow-x:auto;
  scrollbar-width:none;
}
.dock ul::-webkit-scrollbar{display:none}
.dock a{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:1px;
  min-height:46px;
  min-width:78px;
  padding:5px 10px;
  color:#fff;
  text-decoration:none;
  border-radius:4px;
  transition:background .16s ease,color .16s ease;
}
.dock a em{
  font-style:normal;
  font-family:var(--display);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--yellow);
}
.dock a span{
  font-size:16px;
  white-space:nowrap;
  line-height:1.3;
}
.dock a:hover{background:var(--pink)}

.anim .prose>section{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .3s ease,transform .3s ease;
}
.anim .prose>section.is-in{opacity:1;transform:none}

@media (min-width:900px){
  body{padding-bottom:90px}
  .topbar{padding:18px 22px}
  .body{
    display:grid;
    grid-template-columns:minmax(0,1fr) 268px;
    gap:48px;
    align-items:start;
    padding:56px 0 76px;
  }
  .side{
    position:sticky;
    top:92px;
    margin-top:0;
  }
  .foot-grid{grid-template-columns:1.1fr 1.5fr 1fr;gap:44px}
  .foot{padding:52px 22px 30px}
  .dock a{min-width:96px;align-items:flex-start}
}

@media (min-width:1100px){
  .prose>section{padding:44px 0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .anim .prose>section{
    opacity:1;
    transform:none;
    transition:none;
  }
  .sheet a:hover{transform:none}
  *{transition-duration:.01ms}
}

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