*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --text:#1f2933;--sub:#5c6b7a;--edge:#dce4ea;
  --rose:#c44569;--rose-light:#fdf2f5;--mint:#0d9488;--mint-light:#ecfdf8;
  --header-h:56px;--content:780px;
}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;color:var(--text);background:#fff;line-height:1.78;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--mint);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{position:sticky;top:0;z-index:200;background:#fff;border-bottom:3px solid var(--rose)}
.header-inner{max-width:980px;margin:0 auto;padding:0 1rem;display:flex;align-items:center;justify-content:space-between;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.65rem;color:var(--text);font-size:.9rem;text-decoration:none}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;font-weight:700;color:var(--rose)}
.brand span{line-height:1.3;max-width:300px}

.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text);transition:transform .2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.site-nav ul{display:flex;gap:1.1rem;list-style:none}
.site-nav a{color:var(--sub);font-size:.88rem;text-decoration:none}
.site-nav a:hover,.site-nav a.active{color:var(--rose);font-weight:600}

.ads-top-bar{background:var(--rose-light);border-bottom:1px solid var(--edge);padding:.5rem 0}
#applist{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.applist-title{font-size:.78rem;color:var(--sub);white-space:nowrap}
#ads{display:flex;gap:.75rem;flex-wrap:wrap}
.ads-item figure{margin:0;text-align:center}
.ads-item img{border-radius:8px}
.ads-item .caption{font-size:.68rem;color:var(--sub);margin-top:.2rem;max-width:65px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.page-shell{max-width:var(--content);margin:0 auto;padding:2rem 1.25rem 3.5rem}

.intro-block{
  background:linear-gradient(135deg,var(--rose-light) 0%,#fff 55%,var(--mint-light) 100%);
  border:1px solid var(--edge);border-radius:16px;padding:2rem 1.75rem 1.65rem;
  margin-bottom:1.85rem;position:relative;
}
.intro-block::after{
  content:"";position:absolute;bottom:-1px;left:2rem;right:2rem;height:3px;
  background:linear-gradient(90deg,var(--rose),var(--mint));border-radius:2px;
}
.intro-badge{display:inline-block;font-size:.76rem;font-weight:600;color:var(--rose);background:#fff;border:1px solid var(--rose);padding:.22rem .75rem;border-radius:999px;margin-bottom:.85rem}
.intro-block h1{font-size:1.58rem;line-height:1.38;font-weight:700;margin-bottom:.85rem;color:#1a1a2e}
.intro-lead{font-size:1rem;color:var(--sub);margin-bottom:.6rem;text-align:justify}
.intro-tags{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1rem}
.intro-tags span{font-size:.76rem;background:#fff;border:1px solid var(--edge);color:var(--sub);padding:.22rem .6rem;border-radius:6px}

.panel-stack{display:flex;flex-direction:column;gap:.6rem}
.panel-item{border:1px solid var(--edge);border-radius:12px;overflow:hidden;background:#fff;transition:box-shadow .22s,border-color .22s}
.panel-item.is-open{box-shadow:0 6px 22px rgba(196,69,105,.1);border-color:#f0c4d0}
.panel-trigger{
  width:100%;display:flex;align-items:center;gap:.9rem;padding:1.05rem 1.2rem;
  background:var(--rose-light);border:none;cursor:pointer;font:inherit;text-align:left;color:#1a1a2e;
}
.panel-trigger:hover{background:#fce8ef}
.panel-num{
  flex-shrink:0;width:34px;height:34px;border-radius:50%;background:var(--rose);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;
}
.panel-trigger .panel-label{flex:1;font-weight:600;font-size:.97rem;line-height:1.42}
.panel-trigger .panel-arrow{flex-shrink:0;width:22px;height:22px;color:var(--mint);transition:transform .25s;font-size:1rem;line-height:1}
.panel-item.is-open .panel-arrow{transform:rotate(180deg)}
.panel-content{display:none;padding:1.15rem 1.3rem 1.4rem;border-top:1px solid var(--edge);background:#fff}
.panel-item.is-open .panel-content{display:block}
.panel-content p{margin-bottom:.95rem;text-align:justify;color:#333}
.panel-content h2{font-size:1.05rem;color:var(--rose);margin-bottom:.75rem;font-weight:600}
.panel-content figure{margin:1.2rem 0;border-radius:10px;overflow:hidden;border:1px solid var(--edge)}
.panel-content figcaption{font-size:.82rem;color:var(--sub);padding:.5rem .75rem;background:var(--mint-light);text-align:center}
.panel-content ul{margin:.7rem 0 1rem 1.2rem;color:#333}
.panel-content li{margin-bottom:.42rem}
.note-box{background:var(--mint-light);border-left:4px solid var(--mint);padding:.85rem 1rem;border-radius:0 8px 8px 0;font-size:.92rem;margin:1rem 0;color:#334155}

.bottom-nav{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--edge)}
.bottom-nav a{font-size:.86rem;color:var(--sub);background:var(--rose-light);padding:.35rem .85rem;border-radius:999px;border:1px solid var(--edge)}
.bottom-nav a:hover{color:var(--rose);text-decoration:none;border-color:var(--rose)}

.prose-page{max-width:var(--content);margin:0 auto;padding:2rem 1.25rem 3rem}
.prose-page h1{font-size:1.48rem;margin-bottom:1rem;color:var(--rose)}
.prose-page h2{font-size:1.08rem;margin:1.4rem 0 .7rem}
.prose-page p{margin-bottom:.95rem}

.error-page{max-width:var(--content);margin:4rem auto;padding:2rem 1.25rem;text-align:center}
.error-page h1{font-size:3rem;color:var(--rose);margin-bottom:.5rem}

.site-footer{background:var(--rose-light);border-top:3px solid var(--rose);padding:1.5rem 1rem;text-align:center;font-size:.82rem;color:var(--sub)}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1rem;margin-bottom:.65rem}
.footer-links a{color:var(--sub)}
.footer-sub{font-size:.76rem;margin-top:.35rem;color:#888}

@media(max-width:640px){
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--edge);padding:.75rem 1rem;display:none;box-shadow:0 4px 14px rgba(0,0,0,.06)}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav li{border-bottom:1px solid var(--edge)}
  .site-nav a{display:block;padding:.65rem 0}
  .intro-block h1{font-size:1.32rem}
  .panel-trigger{padding:.9rem 1rem;gap:.65rem}
  .panel-num{width:30px;height:30px;font-size:.75rem}
}