*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --ink:#1a2332;--muted:#5c6678;--line:#e8e0d6;
  --plum:#5b2d6e;--coral:#e05a4f;--mist:#f7f3ef;--blush:#fdf6f4;
  --header-h:58px;--max:780px;
}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.78;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--plum);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{position:sticky;top:0;z-index:220;background:#fff;border-bottom:3px solid var(--coral)}
.header-inner{max-width:980px;margin:0 auto;padding:0 1.1rem;display:flex;align-items:center;justify-content:space-between;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--ink);font-size:.92rem;text-decoration:none}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;font-weight:700;color:var(--plum)}
.brand span{line-height:1.32;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(--ink);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:1rem;list-style:none}
.site-nav a{color:var(--muted);font-size:.88rem;text-decoration:none}
.site-nav a:hover,.site-nav a.active{color:var(--plum);font-weight:600}

.ads-top-bar{background:var(--blush);border-bottom:1px solid #f0d4cf;padding:.55rem 0}
#applist{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.applist-title{font-size:.78rem;color:var(--muted);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(--muted);margin-top:.2rem;max-width:65px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.nav-wrap{max-width:var(--max);margin:0 auto;padding:2rem 1.25rem 3.5rem}

.hero-nav{
  background:linear-gradient(160deg,var(--mist) 0%,#fff 55%);
  border:1px solid var(--line);border-left:5px solid var(--coral);
  border-radius:0 16px 16px 0;padding:2rem 1.8rem 1.6rem;margin-bottom:1.6rem;
}
.hero-chip{display:inline-block;font-size:.76rem;font-weight:600;color:var(--coral);background:#fff;border:1px solid var(--coral);padding:.22rem .75rem;border-radius:999px;margin-bottom:.85rem}
.hero-nav h1{font-size:clamp(1.38rem,3.2vw,1.72rem);line-height:1.36;font-weight:700;margin-bottom:.9rem;color:var(--plum)}
.hero-lead{font-size:1rem;color:var(--muted);margin-bottom:.65rem;text-align:justify}
.hero-tags{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1rem}
.hero-tags span{font-size:.77rem;background:var(--mist);color:var(--muted);padding:.28rem .7rem;border-radius:6px;border:1px solid var(--line)}

.acc-stack{display:flex;flex-direction:column;gap:.5rem}
.acc-item{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;transition:box-shadow .2s,border-color .2s}
.acc-item.is-open{box-shadow:0 6px 22px rgba(91,45,110,.09);border-color:#d4c4dc}
.acc-btn{
  width:100%;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.9rem;
  padding:1rem 1.2rem;background:var(--mist);border:none;cursor:pointer;font:inherit;text-align:left;color:var(--plum);
}
.acc-btn:hover{background:#efe8e2}
.acc-num{
  width:34px;height:34px;border-radius:50%;background:var(--plum);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:.78rem;font-weight:700;
}
.acc-btn .acc-label{font-weight:600;font-size:.97rem;line-height:1.38}
.acc-btn .acc-arrow{flex-shrink:0;font-size:1rem;color:var(--coral);transition:transform .25s}
.acc-item.is-open .acc-arrow{transform:rotate(180deg)}
.acc-content{display:none;padding:1.15rem 1.3rem 1.4rem;border-top:1px dashed var(--line);background:#fff}
.acc-item.is-open .acc-content{display:block}
.acc-content p{margin-bottom:.95rem;text-align:justify;color:#333}
.acc-content h2{font-size:1.05rem;margin-bottom:.75rem;color:var(--plum);font-weight:700}
.acc-content figure{margin:1.2rem 0;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.acc-content figcaption{font-size:.82rem;color:var(--muted);padding:.55rem .8rem;background:var(--mist);text-align:center}
.acc-content ul{margin:.7rem 0 1rem 1.2rem;color:#333}
.acc-content li{margin-bottom:.4rem}
.alert-box{background:#fff5f3;border-left:4px solid var(--coral);padding:.85rem 1rem;border-radius:0 8px 8px 0;font-size:.92rem;margin:1rem 0;color:#444}

.faq-block{margin-top:2rem;padding-top:1.6rem;border-top:2px solid var(--line)}
.faq-block>h2{font-size:1.15rem;margin-bottom:1rem;color:var(--plum)}
.faq-item{border:1px solid var(--line);border-radius:10px;padding:1rem 1.15rem;margin-bottom:.65rem;background:var(--mist)}
.faq-item h3{font-size:.95rem;margin-bottom:.45rem;color:var(--ink)}

.read-row{display:flex;flex-wrap:wrap;gap:.65rem;margin-top:1.8rem;padding-top:1.4rem;border-top:1px solid var(--line)}
.read-row a{font-size:.85rem;color:var(--muted);background:var(--mist);padding:.32rem .85rem;border-radius:999px;border:1px solid var(--line)}
.read-row a:hover{color:var(--plum);text-decoration:none;border-color:var(--coral)}

.outro{margin-top:2rem;padding:1.4rem 1.5rem;background:var(--blush);border-radius:12px;border:1px solid #f0d4cf}
.outro h2{font-size:1.02rem;margin-bottom:.65rem;color:var(--plum)}
.outro p{font-size:.94rem;color:var(--muted);margin-bottom:.5rem}

.prose-page{max-width:var(--max);margin:0 auto;padding:2rem 1.25rem 3rem}
.prose-page h1{font-size:1.45rem;margin-bottom:1rem;color:var(--plum)}
.prose-page p{margin-bottom:.95rem}

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

.site-footer{background:var(--mist);border-top:3px solid var(--coral);padding:1.5rem 1rem;text-align:center;font-size:.82rem;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1rem;margin-bottom:.65rem}
.footer-links a{color:var(--muted)}
.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(--line);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(--line)}
  .site-nav a{display:block;padding:.65rem 0}
  .hero-nav{padding:1.5rem 1.2rem}
  .acc-btn{grid-template-columns:auto 1fr auto;gap:.65rem;padding:.9rem 1rem}
}