*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#134e4a;line-height:1.75;font-size:16px}
a{color:#0d9488;text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.container{max-width:880px;margin:0 auto;padding:0 20px}
.site-header{background:#fff;border-bottom:2px solid #99f6e4;position:sticky;top:0;z-index:200}
.header-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;position:relative}
.brand{display:flex;align-items:center;gap:10px;color:#134e4a}.brand:hover{text-decoration:none}.brand b{color:#0d9488}.brand img{border-radius:6px}
.site-nav ul{display:flex;gap:16px;list-style:none;flex-wrap:wrap}.site-nav a{color:#57534e;font-size:.9rem}.site-nav a.active{color:#0d9488;font-weight:600;border-bottom:2px solid #0d9488}
.hero{padding:40px 0 16px}.hero .tag{display:inline-block;background:#f0fdfa;color:#0d9488;font-size:.76rem;font-weight:700;padding:5px 12px;border-radius:999px;margin-bottom:12px}
.hero h1{font-size:1.7rem;line-height:1.35;margin-bottom:12px}.hero .lead{color:#44403c}
.steps{padding:10px 0 40px}
.step{position:relative;padding:22px 18px 22px 72px;border-left:3px solid #99f6e4;margin-left:18px}
.step::before{content:attr(data-num);position:absolute;left:-18px;top:22px;width:36px;height:36px;border-radius:50%;background:#0d9488;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.step h2{font-size:1.1rem;margin-bottom:8px;color:#0f766e}.step p{color:#44403c;margin-bottom:10px}
.step figure{margin:12px 0;border-radius:10px;overflow:hidden;border:1px solid #99f6e4;max-width:520px}
.step figcaption{font-size:.8rem;color:#78716c;margin-top:6px}
.faq{background:#f0fdfa;padding:40px 0 48px;border-top:1px solid #99f6e4}
.faq h2{text-align:center;margin-bottom:16px}.faq-item{background:#fff;border:1px solid #99f6e4;border-radius:10px;padding:14px 16px;margin:0 auto 10px;max-width:820px}
.faq-item h3{color:#0d9488;font-size:.95rem;margin-bottom:6px}.faq-item p{margin:0;color:#57534e;font-size:.92rem}
.error-page h1{color:#0d9488}

.prose-page{padding:36px 0 48px;max-width:720px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page h2{font-size:1.1rem;margin:20px 0 8px}
.prose-page p{margin-bottom:12px;color:#444}
.site-footer{background:#fafaf9;border-top:1px solid #e7e5e4;padding:26px 0;text-align:center;font-size:.88rem;color:#78716c}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:10px}
.footer-links a{color:#57534e}
.error-page{text-align:center;padding:80px 20px}
.error-page h1{font-size:3rem;margin-bottom:12px}
.ads-top-bar{background:#fafafa;border-bottom:1px solid #e7e5e4;padding:10px 0}
.applist-title{font-size:.78rem;color:#57534e;text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
#ads .caption{font-size:.7rem;color:#78716c;margin-top:4px;text-align:center;max-width:70px;line-height:1.3}
.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:#444;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)}
@media(max-width:720px){
  .nav-toggle{display:flex}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #e7e5e4;padding:12px 20px}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:10px}
}