*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1c1917;line-height:1.85;font-size:16px}
a{color:#0f766e;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:2px solid #0f766e;position:sticky;top:0;z-index:500}
.header-inner{max-width:700px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:.93rem;line-height:1.35}
.brand em{font-style:normal;color:#0f766e;font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none}
.site-nav a{color:#444;font-size:.9rem}
.site-nav a.active{color:#0f766e;font-weight:600}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:#333;margin:5px 0;border-radius:1px}

.ads-top-bar{background:#f0fdfa;border-bottom:1px solid #99f6e4;padding:10px 0}
#applist .applist-title{font-size:.84rem;color:#6b7280;margin-bottom:8px}
#ads{display:flex;flex-wrap:wrap;gap:12px}

.scol-shell{max-width:700px;margin:0 auto;padding:0 22px 72px}
.scol-body{display:flex;flex-direction:column}

.scol-toc{position:sticky;top:60px;z-index:300;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px dashed #d6d3d1;padding:12px 0 14px;margin-bottom:20px}
.scol-toc ul{display:flex;flex-wrap:wrap;gap:7px 8px;list-style:none}
.scol-toc a{font-size:.76rem;color:#57534e;background:#fafaf9;padding:5px 11px;border-radius:6px;border:1px solid #e7e5e4;white-space:nowrap;transition:background .15s,border-color .15s}
.scol-toc a.is-active,.scol-toc a:hover{color:#0f766e;border-color:#5eead4;background:#ecfdf5}

.scol-intro{padding:36px 0 30px;border-bottom:3px double #0f766e;margin-bottom:4px}
.scol-intro .intro-chip{display:inline-block;font-size:.78rem;color:#115e59;background:#ccfbf1;padding:5px 14px;border-radius:20px;margin-bottom:16px;letter-spacing:.03em}
.scol-intro h1{font-size:clamp(1.45rem,4.2vw,2.05rem);line-height:1.3;margin-bottom:18px;color:#0c0a09;font-weight:700}
.scol-intro .intro-lead{font-size:1.03rem;color:#292524;margin-bottom:13px}
.scol-intro .intro-note{font-size:.87rem;color:#78716c;margin-top:20px;padding-top:16px;border-top:1px solid #e7e5e4}

.scol-block{padding:30px 0;border-bottom:1px solid #f5f5f4}
.scol-block:last-of-type{border-bottom:0}
.scol-block h2{font-size:1.16rem;margin-bottom:15px;color:#0c0a09;padding-bottom:8px;border-bottom:2px solid #5eead4;display:inline-block;line-height:1.4}
.scol-block p{margin-bottom:14px;color:#292524;font-size:.97rem}
.scol-block ul,.scol-block ol{margin:0 0 14px 1.3rem;color:#292524;font-size:.95rem}
.scol-block li{margin-bottom:7px}

.scol-warn{background:#fff7ed;border-left:4px solid #ea580c;padding:14px 18px;margin:18px 0;font-size:.93rem;color:#7c2d12;border-radius:0 8px 8px 0}
.scol-warn strong{color:#c2410c}

.scol-quote{font-size:1.06rem;font-weight:500;color:#134e4a;background:linear-gradient(90deg,#ecfdf5 0%,transparent 100%);padding:12px 0 12px 20px;margin:20px 0;border-left:3px solid #14b8a6;line-height:1.58}

.scol-fig{margin:22px 0;border-radius:10px;overflow:hidden;border:1px solid #e7e5e4;box-shadow:0 2px 12px rgba(15,118,110,.06)}
.scol-fig img{width:100%}
.scol-fig figcaption{font-size:.79rem;color:#78716c;padding:11px 16px;text-align:center;background:#fafaf9}

.scol-checklist{counter-reset:chk;margin:18px 0;padding:0;list-style:none}
.scol-checklist li{counter-increment:chk;position:relative;padding:14px 0 14px 48px;border-bottom:1px dotted #d6d3d1;font-size:.94rem}
.scol-checklist li::before{content:counter(chk);position:absolute;left:0;top:14px;width:32px;height:32px;background:#0f766e;color:#fff;border-radius:8px;font-size:.85rem;font-weight:700;display:flex;align-items:center;justify-content:center}

.scol-faq{padding:34px 0 18px;margin-top:6px}
.scol-faq>h2{font-size:1.14rem;margin-bottom:20px;padding-bottom:8px;border-bottom:2px solid #5eead4;display:inline-block}
.faq-row{border-bottom:1px solid #f5f5f4;padding:15px 0}
.faq-row h3{font-size:1rem;margin-bottom:8px;color:#0c0a09}
.faq-row p{font-size:.93rem;color:#444;margin:0}

.scol-more{padding:26px 0;border-top:3px double #0f766e;margin-top:10px}
.scol-more h2{font-size:1.05rem;margin-bottom:12px}
.scol-more ul{padding-left:1.25rem;line-height:2;font-size:.93rem}

.scol-tail{padding:28px 0 8px;font-size:.94rem;color:#444}
.scol-tail h2{font-size:1.05rem;margin-bottom:12px;color:#0c0a09}

.site-footer{background:#fafaf9;border-top:1px solid #e7e5e4;padding:30px 22px;text-align:center;font-size:.88rem;color:#666}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;margin-bottom:10px}
.footer-sub{font-size:.81rem;color:#a8a29e;margin-top:6px}
.prose-page{max-width:700px;margin:44px auto;padding:0 22px}
.prose-page h1{font-size:1.42rem;margin-bottom:16px}
.error-page{max-width:480px;margin:80px auto;padding:0 22px;text-align:center}

@media(max-width:768px){
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #eee;padding:12px 22px;box-shadow:0 8px 24px rgba(0,0,0,.06)}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:10px}
  .header-inner{position:relative;flex-wrap:wrap}
  .scol-toc{top:54px}
  .scol-toc a{font-size:.72rem;padding:4px 9px}
}