@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@400;500;600;700&family=Comic+Neue:wght@300;400;700&display=swap');

:root{
  --red:#ff0000;
  --pink:#ff1493;
  --ink:#261717;
  --paper:#fff8f7;
  --line:rgba(38,23,23,.14);
  --mute:rgba(38,23,23,.63);
  --r:28px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  font-family:'Baloo 2','Comic Neue',system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background-color:var(--paper);
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:-18vmax;
  z-index:-1;
  pointer-events:none;
  background:conic-gradient(from 20deg at 50% 50%,#ff0000,#ff1493,#ffd6e6,#ff1493,#ff0000);
  opacity:.26;
  filter:blur(64px) saturate(1.25);
  animation:aurora 11s ease-in-out infinite alternate;
}
@keyframes aurora{
  0%{transform:rotate(0deg) scale(1)}
  50%{transform:rotate(14deg) scale(1.12)}
  100%{transform:rotate(-9deg) scale(1.04)}
}

img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3{line-height:1.3;margin:0;font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(1.9rem,6vw,3.4rem)}
p{margin:0 0 1.05em}

.top{
  position:sticky;
  top:0;
  z-index:30;
  background:rgba(255,248,247,.88);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid var(--line);
}
.brandbar{
  display:flex;
  justify-content:center;
  padding:8px 16px;
  border-bottom:1px dashed var(--line);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  text-decoration:none;
  font-weight:700;
  font-size:1.12rem;
  letter-spacing:.1em;
}
.brand .mark{width:28px;height:28px;border-radius:10px}
.brand-t{
  background:linear-gradient(96deg,var(--red),var(--pink));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.menu{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:2px 4px;
  padding:6px 14px 10px;
}
.menu a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 10px;
  border-radius:999px;
  text-decoration:none;
  font-size:.96rem;
  color:var(--ink);
  transition:background .25s ease,color .25s ease;
}
.menu a:hover,.menu a:focus-visible{background:rgba(255,20,147,.14);color:#a8005a}
.menu .cta{
  margin-left:6px;
  padding:0 18px;
  font-weight:600;
  color:#fff;
  background:linear-gradient(96deg,var(--red),var(--pink));
  transition:transform .25s ease,filter .25s ease;
}
.menu .cta:hover,.menu .cta:focus-visible{
  color:#fff;
  transform:translateY(-2px);
  filter:saturate(1.2) brightness(1.05);
}

.hero{
  position:relative;
  min-height:70vh;
  display:grid;
  place-items:center;
  overflow:hidden;
  background:linear-gradient(140deg,#261717,#5c0012 48%,#ff1493);
}
.hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.55;
}
.hero-veil{
  position:absolute;
  inset:0;
  background:
    radial-gradient(70% 65% at 50% 38%,rgba(255,0,0,.45),transparent 72%),
    linear-gradient(180deg,rgba(38,23,23,.5),rgba(38,23,23,.82));
}
.hero-in{
  position:relative;
  z-index:2;
  max-width:920px;
  padding:64px 22px 72px;
  text-align:center;
}
.hero h1{
  color:#fff;
  text-shadow:0 10px 34px rgba(0,0,0,.45);
  letter-spacing:.02em;
}
.hero-band{
  position:absolute;
  left:-5%;
  right:-5%;
  bottom:-1px;
  height:54px;
  z-index:3;
  background:linear-gradient(90deg,var(--pink),var(--red));
  clip-path:polygon(0 74%,100% 0,100% 100%,0 100%);
}

main{padding:52px 16px 0}
.wrap{
  max-width:1120px;
  margin:0 auto;
  display:grid;
  grid-template-columns:248px minmax(0,1fr);
  gap:42px;
  align-items:start;
}

.side{
  position:sticky;
  top:132px;
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:20px 18px;
  background:rgba(255,255,255,.74);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.side-t{font-size:1rem;letter-spacing:.16em}
.side-t span{
  display:inline-block;
  padding:0 4px 3px;
  background:linear-gradient(90deg,rgba(255,0,0,.35),rgba(255,20,147,.22)) no-repeat left bottom/100% .4em;
}
.side ul{list-style:none;margin:14px 0 0;padding:0}
.side li + li{margin-top:2px}
.side a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:2px 8px;
  border-radius:14px;
  border-left:2px solid transparent;
  text-decoration:none;
  font-size:.94rem;
  color:var(--ink);
  transition:background .22s ease,border-color .22s ease,padding-left .22s ease;
}
.side a:hover,.side a:focus-visible{
  background:rgba(255,0,0,.08);
  border-left-color:var(--pink);
  padding-left:12px;
}

.body-sec{min-width:0}
.article{
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:26px 22px 34px;
  background:rgba(255,255,255,.83);
  overflow-wrap:break-word;
}
.article > article{
  margin-top:34px;
  padding-top:30px;
  border-top:1px solid var(--line);
  scroll-margin-top:148px;
}
.article > article:first-child{margin-top:0;padding-top:0;border-top:0}
.article > article > :last-child{margin-bottom:0}

.article h2{
  font-size:clamp(1.32rem,3.4vw,1.72rem);
  margin:0 0 14px;
}
.article h3{
  font-size:clamp(1.1rem,2.6vw,1.28rem);
  margin:1.5em 0 .7em;
  color:#a3002f;
}
.article h2 > span,
.article h3 > span{
  display:inline-block;
  padding:0 4px 4px;
  background:linear-gradient(90deg,rgba(255,0,0,.3),rgba(255,20,147,.18)) no-repeat left bottom/100% .34em;
}
.article p{margin:0 0 1.02em;color:#33201f}
.article ul,.article ol{margin:0 0 1.1em;padding-left:1.35em}
.article li{margin:.35em 0}
.article strong{color:#bd0034}
.article a{
  color:#b8005c;
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.article a:hover{color:var(--red)}
.article blockquote{
  margin:1.4em 0;
  padding:14px 18px;
  border-left:3px solid var(--pink);
  border-radius:0 20px 20px 0;
  background:rgba(255,20,147,.08);
}
.article blockquote p:last-child{margin-bottom:0}
.article table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:0 0 1.2em;
  font-size:.96rem;
}
.article th,.article td{
  border:1px solid var(--line);
  padding:8px 12px;
  text-align:left;
  vertical-align:top;
}
.article th{background:rgba(255,20,147,.09)}
.article hr{border:0;border-top:1px dashed var(--line);margin:1.6em 0}
.article code,.article pre{
  font-family:'Comic Neue',ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.94em;
}
.article pre{
  overflow-x:auto;
  padding:14px 16px;
  border-radius:20px;
  background:#261717;
  color:#ffe8ef;
}

footer{
  margin-top:64px;
  padding:50px 16px 26px;
  color:#ffe8ef;
  background:linear-gradient(172deg,#261717,#3d1418 52%,#610020);
  position:relative;
  overflow:hidden;
}
footer::before{
  content:"";
  position:absolute;
  inset:-10% -20% auto -20%;
  height:60%;
  background:radial-gradient(50% 100% at 50% 0%,rgba(255,20,147,.4),transparent 72%);
  pointer-events:none;
}
.foot{position:relative;max-width:1120px;margin:0 auto}
.foot-cta{
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r);
  padding:30px 22px 32px;
  text-align:center;
}
.foot-cta h2{font-size:clamp(1.35rem,4.2vw,1.9rem);color:#fff}
.foot-cta h2 span{
  display:inline-block;
  padding:0 6px 4px;
  background:linear-gradient(90deg,var(--red),var(--pink)) no-repeat left bottom/100% .16em;
}
.foot-btn{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  margin-top:14px;
  padding:0 22px;
  border-radius:999px;
  text-decoration:none;
  font-weight:600;
  color:#fff;
  background:linear-gradient(96deg,var(--red),var(--pink));
  transition:transform .25s ease,filter .25s ease;
}
.foot-btn:hover,.foot-btn:focus-visible{transform:translateY(-2px);filter:brightness(1.08)}

.foot-nav{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px 20px;
  margin:34px 0 0;
  padding-top:30px;
  border-top:1px solid rgba(255,255,255,.16);
}
.foot-nav dl{margin:0}
.foot-nav dt{
  font-size:.82rem;
  letter-spacing:.18em;
  color:rgba(255,232,239,.62);
  margin-bottom:8px;
}
.foot-nav dd{margin:0}
.foot-nav a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:2px 0;
  width:fit-content;
  font-size:.94rem;
  text-decoration:none;
  color:#ffe8ef;
  border-bottom:1px solid transparent;
  transition:color .22s ease,border-color .22s ease;
}
.foot-nav a:hover,.foot-nav a:focus-visible{color:#fff;border-bottom-color:var(--pink)}

.copy{
  margin:30px 0 0;
  text-align:center;
  font-size:.85rem;
  color:rgba(255,232,239,.62);
}
.copy.note{max-width:720px;margin:8px auto 0;line-height:1.7}

.rv-on .rv{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.rv-on .rv.in{opacity:1;transform:none}

@media (max-width:900px){
  .wrap{grid-template-columns:minmax(0,1fr);gap:26px}
  .side{position:static;order:2}
  .body-sec{order:1}
  .side ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px}
  .hero{min-height:62vh}
  .article{padding:22px 16px 28px}
  main{padding-top:34px}
}

@media (max-width:560px){
  body{font-size:16.5px}
  .menu{justify-content:flex-start;gap:2px}
  .menu a{padding:0 8px;font-size:.92rem}
  .menu .cta{margin-left:0}
  .hero-in{padding:48px 18px 62px}
  .foot-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .side ul{grid-template-columns:minmax(0,1fr)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before{animation:none}
  .rv-on .rv{opacity:1;transform:none;transition:none}
  .menu .cta,.foot-btn,.side a,.menu a{transition:none}
}

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