*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --ink:#1a2332;--muted:#5c6b7a;--line:#dce3ea;
  --teal:#0d9488;--teal-soft:#ecfdf5;--coral:#e11d48;--coral-soft:#fff1f2;
  --header-h:58px;--content:820px;
}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.8;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{position:sticky;top:0;z-index:200;background:#fff;border-bottom:3px solid var(--teal)}
.header-inner{max-width:1000px;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:.7rem;color:var(--ink);font-size:.88rem;text-decoration:none}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;font-weight:700;color:var(--coral)}
.brand span{line-height:1.35;max-width:340px}

.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:.86rem;text-decoration:none}
.site-nav a:hover,.site-nav a.active{color:var(--teal);font-weight:600}

.ads-top-bar{background:var(--teal-soft);border-bottom:1px solid var(--line);padding:.55rem 0}
#applist{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.applist-title{font-size:.76rem;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}
.ads-item .caption{font-size:.67rem;color:var(--muted);margin-top:.2rem;max-width:65px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.wrap{max-width:var(--content);margin:0 auto;padding:2.1rem 1.3rem 3.6rem}

.hero-panel{
  display:grid;grid-template-columns:1fr auto;gap:1.2rem;align-items:start;
  background:linear-gradient(135deg,var(--coral-soft) 0%,#fff 50%,var(--teal-soft) 100%);
  border:1px solid var(--line);border-radius:16px;padding:1.9rem 1.7rem;margin-bottom:2.1rem;
  box-shadow:0 4px 18px rgba(13,148,136,.07);
}
.hero-text .hero-tag{display:inline-block;font-size:.73rem;font-weight:700;color:var(--coral);letter-spacing:.03em;margin-bottom:.6rem}
.hero-text h1{font-size:1.58rem;line-height:1.38;font-weight:700;margin-bottom:.85rem;color:#0f172a}
.hero-text .lede{font-size:.97rem;color:var(--muted);margin-bottom:.6rem;text-align:justify}
.hero-badge{
  writing-mode:vertical-rl;text-orientation:mixed;font-size:.72rem;font-weight:600;
  color:var(--teal);background:#fff;border:2px solid var(--teal);border-radius:8px;
  padding:.65rem .35rem;letter-spacing:.12em;white-space:nowrap;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:.42rem;margin-top:1rem}
.hero-chips span{font-size:.73rem;background:#fff;border:1px dashed var(--line);color:var(--muted);padding:.22rem .6rem;border-radius:20px}

.section-jump{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem;padding-bottom:1.2rem;border-bottom:1px dotted var(--line)}
.section-jump a{font-size:.8rem;color:var(--muted);background:var(--teal-soft);padding:.28rem .75rem;border-radius:6px;text-decoration:none}
.section-jump a:hover{color:var(--teal);background:#d1fae5}

.accord-stack{display:flex;flex-direction:column;gap:.6rem}
.accord-panel{
  border:1px solid var(--line);border-radius:12px;background:#fff;
  overflow:hidden;transition:box-shadow .25s;
}
.accord-panel.is-open{box-shadow:0 10px 32px rgba(225,29,72,.08);border-color:#fecdd3}
.accord-trigger{
  width:100%;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.85rem;
  padding:1.05rem 1.2rem;background:transparent;border:none;cursor:pointer;font:inherit;text-align:left;color:var(--ink);
}
.accord-trigger:hover{background:var(--teal-soft)}
.accord-num{
  width:28px;height:28px;border-radius:50%;background:var(--coral-soft);color:var(--coral);
  font-size:.78rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.accord-panel.is-open .accord-num{background:var(--teal);color:#fff}
.accord-label{font-weight:600;font-size:.95rem;line-height:1.42}
.accord-icon{
  width:12px;height:12px;border-right:2.5px solid var(--teal);border-bottom:2.5px solid var(--teal);
  transform:rotate(45deg);transition:transform .3s;flex-shrink:0;margin-top:-3px;
}
.accord-panel.is-open .accord-icon{transform:rotate(-135deg);margin-top:3px}
.accord-content{max-height:0;overflow:hidden;transition:max-height .38s ease}
.accord-panel.is-open .accord-content{max-height:4500px}
.accord-inner{padding:0 1.3rem 1.4rem 3.35rem;border-top:1px solid var(--line)}
.accord-inner p{margin-bottom:.95rem;text-align:justify;color:#334155}
.accord-inner h2{font-size:1.05rem;color:var(--coral);margin-bottom:.75rem;font-weight:600}
.accord-inner figure{margin:1.2rem 0;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.accord-inner figcaption{font-size:.8rem;color:var(--muted);padding:.5rem .75rem;background:var(--coral-soft);text-align:center}
.accord-inner ul,.accord-inner ol{margin:.7rem 0 1rem 1.2rem;color:#334155}
.accord-inner li{margin-bottom:.42rem}
.note-box{background:var(--teal-soft);border-left:4px solid var(--teal);padding:.8rem 1rem;border-radius:0 8px 8px 0;font-size:.9rem;margin:1rem 0;color:#115e59}

.faq-block{margin-top:2rem;padding:1.5rem;background:var(--teal-soft);border-radius:12px;border:1px solid #99f6e4}
.faq-block h2{font-size:1.12rem;color:var(--teal);margin-bottom:1rem}
.faq-item{margin-bottom:1.1rem;padding-bottom:1rem;border-bottom:1px dashed #99f6e4}
.faq-item:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}
.faq-item h3{font-size:.94rem;color:var(--ink);margin-bottom:.4rem;font-weight:600}
.faq-item p{font-size:.9rem;color:var(--muted);text-align:justify}

.closing-block{margin-top:2.2rem;padding-top:1.5rem;border-top:2px solid var(--line)}
.closing-block h2{font-size:1.08rem;color:var(--teal);margin-bottom:.75rem}
.closing-block p{font-size:.93rem;color:var(--muted);text-align:justify;margin-bottom:.8rem}

.foot-links{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.8rem}
.foot-links a{font-size:.84rem;color:var(--muted);background:var(--coral-soft);padding:.3rem .78rem;border-radius:6px;text-decoration:none}
.foot-links a:hover{color:var(--coral)}

.prose-page{max-width:var(--content);margin:0 auto;padding:2rem 1.25rem 3rem}
.prose-page h1{font-size:1.46rem;margin-bottom:1rem;color:var(--teal)}
.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(--teal);margin-bottom:.5rem}

.site-footer{background:var(--teal-soft);border-top:3px solid var(--teal);padding:1.55rem 1rem;text-align:center;font-size:.81rem;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:#94a3b8}

@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:.5rem}
  .hero-panel{grid-template-columns:1fr}
  .hero-badge{writing-mode:horizontal-tb;padding:.4rem .8rem;width:fit-content}
  .accord-inner{padding-left:1.2rem}
}