*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1e293b;line-height:1.78;font-size:16px}
a{color:#0d9488;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:2px solid #99f6e4;position:sticky;top:0;z-index:400;box-shadow:0 1px 0 rgba(13,148,136,.06)}
.header-inner{max-width:1140px;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;position:relative;min-height:58px}
.brand{display:flex;align-items:center;gap:10px;color:#0f172a;font-weight:600;font-size:.92rem;line-height:1.35}
.brand em{font-style:normal;color:#0d9488;font-weight:700}
.site-nav ul{display:flex;gap:16px;list-style:none;flex-wrap:wrap}
.site-nav a{color:#64748b;font-size:.88rem;padding:18px 0;display:block}
.site-nav a.active,.site-nav a:hover{color:#0d9488;font-weight:600;text-decoration:none}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:#0f172a;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)}

.ads-top-bar{background:#f0fdfa;border-bottom:1px solid #99f6e4;padding:10px 0}
.applist-title{font-size:.76rem;color:#64748b;text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}

.st-wrap{max-width:1140px;margin:0 auto;padding:0 22px 64px}
.st-hero{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:stretch;padding:44px 0 36px;border-bottom:4px solid #2dd4bf;scroll-margin-top:76px}
.st-hero-main .st-tag{display:inline-block;font-size:.72rem;color:#0f766e;background:linear-gradient(135deg,#ccfbf1,#fff);border:1px solid #5eead4;padding:5px 14px;border-radius:6px 18px 6px 18px;margin-bottom:16px;letter-spacing:.03em}
.st-hero-main h1{font-size:clamp(1.42rem,3.8vw,1.88rem);line-height:1.34;margin-bottom:18px;color:#0f172a;font-weight:700}
.st-hero-main .st-lede{color:#334155;text-align:justify;margin-bottom:12px;font-size:.98rem}
.st-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.st-chips span{font-size:.74rem;background:#ecfdf5;border:1px solid #a7f3d0;color:#047857;padding:4px 11px;border-radius:999px}
.st-hero-side{background:linear-gradient(160deg,#ecfdf5 0%,#f8fafc 100%);border:1px solid #99f6e4;border-radius:16px;padding:22px 18px;display:flex;flex-direction:column;gap:10px;box-shadow:0 10px 32px rgba(13,148,136,.08)}
.st-hero-side h2{font-size:.82rem;color:#64748b;font-weight:500;margin-bottom:4px;letter-spacing:.02em}
.st-hero-side a{display:block;padding:12px 14px;background:#fff;border-radius:10px;border-left:4px solid #14b8a6;font-weight:600;color:#0f766e;font-size:.88rem;transition:background .15s,color .15s,border-color .15s}
.st-hero-side a:hover,.st-hero-side a.is-active{background:#0d9488;color:#fff;border-left-color:#042f2e;text-decoration:none}

.st-block{padding:40px 0;border-bottom:1px dashed #ccfbf1;scroll-margin-top:76px;max-width:860px}
.st-block h2{font-size:1.14rem;margin-bottom:15px;color:#0f766e;padding-left:12px;border-left:5px solid #2dd4bf;line-height:1.4}
.st-block p{margin-bottom:13px;text-align:justify;color:#334155;font-size:.96rem}
.st-block figure{margin:22px 0;border-radius:14px;overflow:hidden;border:1px solid #99f6e4;box-shadow:0 8px 24px rgba(13,148,136,.07)}
.st-block figcaption{font-size:.78rem;color:#64748b;padding:10px 16px;background:#f0fdfa;line-height:1.5}

.st-aside{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:16px 18px;margin:18px 0;font-size:.92rem;color:#475569;line-height:1.72}
.st-aside strong{color:#0f766e}

.st-faq{padding:42px 0 28px;scroll-margin-top:76px;max-width:860px}
.st-faq>h2{font-size:1.1rem;margin-bottom:22px;color:#0f766e;border-bottom:2px solid #99f6e4;padding-bottom:10px}
.st-faq dl{margin:0}
.st-faq dt{font-weight:700;color:#0f172a;margin:18px 0 7px;font-size:.97rem}
.st-faq dd{margin:0 0 14px 0;padding-left:14px;border-left:3px solid #5eead4;color:#475569;font-size:.93rem;line-height:1.74}

.st-close{margin-top:28px;padding:24px;background:linear-gradient(135deg,#ecfdf5,#f0fdfa);border-radius:14px;border:1px solid #99f6e4;max-width:860px}
.st-close h2{font-size:1.02rem;margin-bottom:12px;color:#0f766e}
.st-close p{font-size:.93rem;color:#475569;margin-bottom:8px;text-align:justify}

.site-footer{background:#f0fdfa;border-top:1px solid #99f6e4;padding:28px 22px;text-align:center;font-size:.86rem;color:#64748b}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 18px;margin-bottom:10px}
.footer-sub{font-size:.78rem;color:#94a3b8;margin-top:6px}

.prose-page{max-width:760px;margin:36px auto;padding:0 22px 48px}
.prose-page h1{font-size:1.4rem;margin-bottom:16px;color:#0f766e}
.prose-page p{margin-bottom:12px;color:#334155}

@media(max-width:860px){
  .st-hero{grid-template-columns:1fr;gap:28px}
  .st-hero-side{flex-direction:row;flex-wrap:wrap}
  .st-hero-side a{flex:1;min-width:140px;border-left:none;border-top:3px solid #14b8a6;border-radius:10px}
  .st-hero-side a.is-active{border-top-color:#042f2e}
  .nav-toggle{display:flex}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #99f6e4;padding:14px 22px;box-shadow:0 6px 20px rgba(15,23,42,.06);z-index:390}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:0}
}