*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
:root{--accent:#0d9488;--accent-dark:#0f766e;--accent-soft:#ccfbf1;--accent-mid:#5eead4;--ink:#134e4a;--text:#1e293b;--muted:#64748b;--line:#99f6e4;--shade-a:#f0fdfa;--shade-b:#fff}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:var(--text);line-height:1.78;font-size:16px}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:2px solid var(--accent);position:sticky;top:0;z-index:300}
.header-inner{max-width:1140px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:.94rem}
.brand:hover{text-decoration:none}
.brand img{border-radius:8px}
.brand em{font-style:normal;color:var(--accent-dark);font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none}
.site-nav a{color:var(--muted);font-size:.9rem;padding:4px 0}
.site-nav a.active,.site-nav a:hover{color:var(--accent-dark);font-weight:600;border-bottom:2px solid var(--accent);text-decoration:none}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:#333;transition:.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)}

.ads-top-bar{background:var(--shade-a);border-bottom:1px solid var(--line);padding:10px 0}
.applist-title{font-size:.78rem;color:var(--accent-dark);text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}

.page-shell{max-width:1140px;margin:0 auto;padding:24px 20px 52px}

.jump-row{display:flex;flex-wrap:wrap;gap:8px 12px;padding:0 0 22px;border-bottom:1px dashed var(--line);margin-bottom:28px}
.jump-row a{font-size:.84rem;padding:6px 14px;border:1px solid var(--line);border-radius:999px;color:var(--ink);background:#fff;transition:border-color .15s,color .15s}
.jump-row a:hover,.jump-row a.is-active{border-color:var(--accent);color:var(--accent-dark);text-decoration:none;font-weight:600}

.grid-board{display:grid;grid-template-columns:1fr 1fr;gap:0;border:2px solid var(--accent);border-radius:18px;overflow:hidden;box-shadow:0 10px 36px rgba(13,148,136,.1)}
.grid-cell{padding:26px 24px;border:1px solid var(--line);min-height:210px;background:var(--shade-b)}
.grid-cell:nth-child(4n+2),.grid-cell:nth-child(4n+3){background:var(--shade-a)}
.grid-cell--full{grid-column:1/-1;background:linear-gradient(118deg,var(--accent-dark) 0%,var(--accent) 48%,var(--accent-soft) 100%);color:#fff;border:none;padding:32px 28px}
.grid-cell--full h1{font-size:clamp(1.36rem,3.4vw,1.88rem);line-height:1.36;margin-bottom:14px;color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.12)}
.grid-cell--full .hero-tag{display:inline-block;font-size:.76rem;font-weight:600;color:var(--accent-dark);background:#fff;padding:5px 14px;border-radius:999px;margin-bottom:14px}
.grid-cell--full p{color:#ecfeff;font-size:1rem;margin-bottom:10px;text-align:justify}
.grid-cell--full p:last-child{margin-bottom:0}
.grid-cell--full .chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.grid-cell--full .chip-row span{font-size:.78rem;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.35)}

.grid-cell h2{font-size:1.12rem;color:var(--accent-dark);margin-bottom:11px;line-height:1.38}
.grid-cell p{margin-bottom:10px;text-align:justify;color:#334155;font-size:.96rem}
.grid-cell p:last-child{margin-bottom:0}
.grid-cell figure{margin:14px 0 0;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:#fff}
.grid-cell figcaption{font-size:.8rem;color:var(--muted);padding:9px 12px;background:var(--shade-a)}

.note-bar{background:#fff;border-left:5px solid var(--accent);padding:12px 16px;margin:12px 0;border-radius:0 10px 10px 0;font-size:.92rem;color:#475569;box-shadow:0 2px 10px rgba(13,148,136,.07)}

.faq-zone{margin-top:36px;padding-top:28px;border-top:2px solid var(--accent)}
.faq-zone>h2{font-size:1.16rem;margin-bottom:16px;color:var(--accent-dark)}
.faq-item{border:1px solid var(--line);margin-bottom:10px;background:#fff;border-radius:11px;overflow:hidden}
.faq-item summary{padding:14px 18px;cursor:pointer;font-weight:500;list-style:none;color:#334155}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{background:var(--shade-a);border-bottom:1px solid var(--line);color:var(--accent-dark)}
.faq-item p{padding:14px 18px;color:#475569;font-size:.94rem}

.related-zone{max-width:1140px;margin:0 auto;padding:0 20px 40px}
.related-zone h2{font-size:1.04rem;margin-bottom:12px;color:var(--accent-dark)}
.related-zone ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px 18px}
.related-zone a{font-size:.91rem}

.site-footer{background:var(--shade-a);border-top:2px solid var(--accent);padding:28px 20px;text-align:center;font-size:.88rem;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:10px}
.footer-links a{color:#475569}
.footer-sub{font-size:.82rem;color:var(--accent-dark);margin-top:6px}

.prose-page{max-width:780px;margin:0 auto;padding:32px 20px 48px}
.prose-page h1{font-size:1.4rem;margin-bottom:16px;color:var(--accent-dark)}
.prose-page p{margin-bottom:12px;color:#475569}

@media(max-width:820px){
.grid-board{grid-template-columns:1fr;border-radius:14px}
.grid-cell--full{grid-column:1}
.nav-toggle{display:flex}
.site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px;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:10px}
.grid-cell--full h1{font-size:1.28rem}
}