*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --ink:#0f2922;--muted:#4a6358;--line:#d4e4dc;
  --teal:#0d6b5c;--mint:#e8f5f0;--coral:#e07a5f;--cream:#f7faf9;
  --header-h:58px;--max:820px;
}
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(--teal);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}

.site-header{position:sticky;top:0;z-index:300;background:#fff;border-bottom:3px solid var(--teal);box-shadow:0 2px 12px rgba(13,107,92,.06)}
.header-inner{max-width:980px;margin:0 auto;padding:0 1.15rem;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;font-weight:600;text-decoration:none}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;color:var(--teal);font-weight:700}
.brand span{line-height:1.32;max-width:300px}

.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.55rem;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:23px;height:2px;background:var(--ink);border-radius:1px;transition:transform .2s,opacity .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(--teal);font-weight:600}

.ads-top-bar{background:var(--mint);border-bottom:1px solid var(--line);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:10px;border:1px solid var(--line)}
.ads-item .caption{font-size:.68rem;color:var(--muted);margin-top:.25rem;max-width:68px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.forum-wrap{max-width:var(--max);margin:0 auto;padding:2rem 1.2rem 3.5rem}

.hero-forum{
  background:linear-gradient(160deg,var(--mint) 0%,#fff 55%);
  border:1px solid var(--line);border-radius:16px 4px 16px 4px;
  padding:2rem 1.8rem 1.6rem;margin-bottom:1.6rem;position:relative;
}
.hero-forum::after{
  content:"";position:absolute;bottom:-8px;left:24px;right:24px;height:8px;
  background:repeating-linear-gradient(90deg,var(--teal) 0,var(--teal) 12px,transparent 12px,transparent 20px);opacity:.25;border-radius:0 0 4px 4px;
}
.hero-tag{display:inline-block;font-size:.76rem;font-weight:600;color:#fff;background:var(--teal);padding:.25rem .75rem;border-radius:4px 12px 4px 12px;margin-bottom:.85rem;letter-spacing:.03em}
.hero-forum h1{font-size:1.58rem;line-height:1.36;font-weight:700;margin-bottom:.85rem;color:var(--ink);max-width:680px}
.hero-lead{font-size:1rem;color:var(--muted);margin-bottom:.6rem;text-align:justify}
.forum-chips{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1rem}
.forum-chips span{font-size:.76rem;background:#fff;color:var(--teal);border:1px solid var(--line);padding:.22rem .65rem;border-radius:999px}

.acc-stack{display:flex;flex-direction:column;gap:.5rem}
.acc-item{border:1px solid var(--line);border-radius:6px 14px 6px 14px;overflow:hidden;background:#fff;transition:border-color .2s,box-shadow .2s}
.acc-item.is-open{border-color:#9ecfb8;box-shadow:0 6px 22px rgba(13,107,92,.09)}
.acc-head{
  width:100%;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.75rem;
  padding:.95rem 1.1rem;background:var(--cream);border:none;cursor:pointer;font:inherit;text-align:left;color:var(--ink);
}
.acc-head:hover{background:var(--mint)}
.acc-num{
  width:34px;height:34px;border-radius:50%;background:var(--teal);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:.78rem;font-weight:700;flex-shrink:0;
}
.acc-head h2{font-size:.97rem;font-weight:600;line-height:1.38;margin:0;color:var(--ink)}
.acc-arrow{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:.75rem;color:var(--coral);transition:transform .25s}
.acc-item.is-open .acc-arrow{transform:rotate(180deg);background:var(--mint);border-color:#9ecfb8}
.acc-content{display:none;padding:1.1rem 1.2rem 1.3rem;border-top:1px dashed var(--line);background:#fff}
.acc-item.is-open .acc-content{display:block}
.acc-content p{margin-bottom:.9rem;text-align:justify;color:#2a3d36;font-size:.95rem}
.acc-content figure{margin:1.1rem 0;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
.acc-content figcaption{font-size:.8rem;color:var(--muted);padding:.55rem .8rem;background:var(--cream);text-align:center;line-height:1.5}
.acc-content ul{margin:.6rem 0 1rem 1.2rem;color:#2a3d36}
.acc-content li{margin-bottom:.4rem;font-size:.94rem}

.callout-box{background:#fff5f2;border-left:4px solid var(--coral);padding:.85rem 1rem;border-radius:0 10px 10px 0;font-size:.91rem;margin:1rem 0;color:#5c4038;line-height:1.65}

.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(--ink)}
.faq-row{border:1px solid var(--line);border-radius:6px 12px 6px 12px;padding:1rem 1.15rem;margin-bottom:.75rem;background:var(--cream)}
.faq-row h3{font-size:.94rem;margin-bottom:.45rem;color:var(--teal);font-weight:600}
.faq-row p{font-size:.9rem;color:#2a3d36;margin:0}

.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:.84rem;color:var(--muted);background:var(--mint);padding:.32rem .75rem;border-radius:999px;border:1px solid var(--line)}
.read-row a:hover{color:var(--teal);text-decoration:none;border-color:var(--teal)}

.closing-strip{max-width:var(--max);margin:0 auto;padding:0 1.2rem 2.5rem}
.closing-strip h2{font-size:1.05rem;margin-bottom:.75rem;color:var(--ink)}
.closing-strip p{font-size:.93rem;color:var(--muted);margin-bottom:.65rem;text-align:justify}

.prose-page{max-width:var(--max);margin:0 auto;padding:2rem 1.2rem 3rem}
.prose-page h1{font-size:1.42rem;margin-bottom:1rem;color:var(--ink)}
.prose-page h2{font-size:1.05rem;margin:1.3rem 0 .65rem}
.prose-page p{margin-bottom:.9rem}

.error-page{max-width:var(--max);margin:4rem auto;padding:2rem 1.2rem;text-align:center}
.error-page h1{font-size:2.8rem;color:var(--teal);margin-bottom:.5rem}

.site-footer{background:var(--mint);border-top:3px solid var(--teal);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:.6rem}
.footer-links a{color:var(--muted)}
.footer-sub{font-size:.75rem;margin-top:.35rem;color:#7a9188}

@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 6px 18px rgba(0,0,0,.07)}
  .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:.7rem 0}
  .header-inner{position:relative;flex-wrap:wrap}
  .hero-forum h1{font-size:1.32rem}
  .brand span{max-width:210px;font-size:.84rem}
}