*,*::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:1.84;font-size:16px}
a{color:#0d9488;text-decoration:none}
a:hover{text-decoration:underline;color:#0f766e}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:2px solid #99f6e4;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:#042f2e;font-weight:600;font-size:.93rem;line-height:1.35}
.brand em{font-style:normal;color:#0d9488;font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:6px 16px;list-style:none}
.site-nav a{color:#475569;font-size:.9rem}
.site-nav a.active{color:#0d9488;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:#134e4a;margin:5px 0;border-radius:1px}

.ads-top-bar{background:#f0fdfa;border-bottom:1px solid #ccfbf1;padding:10px 0}
#applist .applist-title{font-size:.84rem;color:#64748b;margin-bottom:8px}
#ads{display:flex;flex-wrap:wrap;gap:12px}

.fan-wrap{max-width:700px;margin:0 auto;padding:0 22px 76px}
.fan-stream{display:flex;flex-direction:column}

.fan-toc{position:sticky;top:58px;z-index:300;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid #ccfbf1;padding:12px 0 14px;margin-bottom:20px}
.fan-toc ul{display:flex;flex-wrap:wrap;gap:6px 8px;list-style:none}
.fan-toc a{font-size:.74rem;color:#475569;background:#f8fafc;padding:5px 11px;border-radius:6px;border:1px solid #e2e8f0;white-space:nowrap;transition:all .15s}
.fan-toc a.is-active,.fan-toc a:hover{color:#0f766e;border-color:#5eead4;background:#ecfdf5}

.fan-hero{padding:36px 0 30px;border-bottom:3px solid #14b8a6;margin-bottom:4px}
.fan-hero .hero-tag{display:inline-block;font-size:.76rem;color:#115e59;background:#ccfbf1;padding:5px 13px;border-radius:20px 4px 20px 4px;margin-bottom:16px;letter-spacing:.03em}
.fan-hero h1{font-size:clamp(1.44rem,4.2vw,2.05rem);line-height:1.33;margin-bottom:17px;color:#042f2e;font-weight:700}
.fan-hero .hero-lede{font-size:1.02rem;color:#334155;margin-bottom:13px}
.fan-hero .hero-aside{font-size:.87rem;color:#64748b;margin-top:20px;padding:14px 16px;background:#f0fdfa;border-radius:8px;border-left:3px solid #2dd4bf}

.fan-sect{padding:30px 0;border-bottom:1px solid #ecfdf5}
.fan-sect:last-of-type{border-bottom:0}
.fan-sect h2{font-size:1.16rem;margin-bottom:15px;color:#042f2e;padding-left:16px;border-left:5px solid #14b8a6;line-height:1.38}
.fan-sect p{margin-bottom:14px;color:#334155;font-size:.96rem}
.fan-sect ul,.fan-sect ol{margin:0 0 14px 1.3rem;color:#334155;font-size:.94rem}
.fan-sect li{margin-bottom:8px}

.fan-quote{font-size:1.05rem;font-weight:500;color:#0f766e;background:linear-gradient(90deg,#ecfdf5 0%,transparent 85%);padding:12px 0 12px 20px;margin:18px 0;border-left:4px solid #2dd4bf;line-height:1.58}

.fan-note{background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:14px 17px;margin:17px 0;font-size:.91rem;color:#92400e}
.fan-note strong{color:#b45309}

.fan-table-wrap{overflow-x:auto;margin:18px 0;border:1px solid #ccfbf1;border-radius:10px}
.fan-table{width:100%;border-collapse:collapse;font-size:.88rem}
.fan-table th,.fan-table td{padding:11px 14px;text-align:left;border-bottom:1px solid #ecfdf5}
.fan-table th{background:#f0fdfa;color:#0f766e;font-weight:600}
.fan-table tr:last-child td{border-bottom:0}

.fan-fig{margin:22px 0;border-radius:14px;overflow:hidden;border:1px solid #ccfbf1;box-shadow:0 4px 18px rgba(13,148,136,.08)}
.fan-fig img{width:100%}
.fan-fig figcaption{font-size:.79rem;color:#64748b;padding:11px 16px;text-align:center;background:#f0fdfa}

.fan-steps{counter-reset:fstep;margin:16px 0;padding:0;list-style:none}
.fan-steps li{counter-increment:fstep;position:relative;padding:14px 0 14px 48px;border-bottom:1px dotted #ccfbf1;font-size:.93rem}
.fan-steps li::before{content:counter(fstep);position:absolute;left:0;top:14px;width:32px;height:32px;background:#14b8a6;color:#fff;border-radius:8px;font-size:.84rem;font-weight:700;display:flex;align-items:center;justify-content:center}

.fan-faq{padding:34px 0 18px;margin-top:6px}
.fan-faq>h2{font-size:1.14rem;margin-bottom:20px;padding-left:16px;border-left:5px solid #14b8a6}
.faq-item{border-bottom:1px solid #ecfdf5;padding:15px 0}
.faq-item h3{font-size:.99rem;margin-bottom:8px;color:#042f2e}
.faq-item p{font-size:.92rem;color:#475569;margin:0}

.fan-more{padding:26px 0;border-top:3px solid #14b8a6;margin-top:10px}
.fan-more h2{font-size:1.05rem;margin-bottom:12px}
.fan-more ul{padding-left:1.25rem;line-height:2.05;font-size:.93rem}

.fan-tail{padding:28px 0 8px;font-size:.93rem;color:#475569}
.fan-tail h2{font-size:1.04rem;margin-bottom:12px;color:#042f2e}

.site-footer{background:#f0fdfa;border-top:1px solid #99f6e4;padding:30px 22px;text-align:center;font-size:.87rem;color:#64748b}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-bottom:10px}
.footer-sub{font-size:.8rem;color:#94a3b8;margin-top:6px}
.prose-page{max-width:700px;margin:44px auto;padding:0 22px}
.prose-page h1{font-size:1.42rem;margin-bottom:16px;color:#042f2e}
.error-page{max-width:480px;margin:80px auto;padding:0 22px;text-align:center}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@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 #ccfbf1;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}
  .fan-toc{top:52px}
  .fan-toc a{font-size:.7rem;padding:4px 9px}
}