:root{--a:#16c5c2;--h:#158482;--t:#1f2828;--m:#637473;--b:#d9e3e3;--bg:#f6f9f9;--c:#ffffff;--k:#124e4d}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--t);font:17px/1.75 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif}
a{color:var(--a)}a:hover,a:focus{color:var(--h)}
.yka-skip-to-content{position:absolute;left:-9999px;top:8px;background:var(--c);color:var(--h);padding:8px 14px;border-radius:6px;z-index:10}.yka-skip-to-content:focus{left:12px}
.yka-site-header{background:#124e4d;color:#fff;border-bottom:4px solid var(--a)}
.yka-branding{max-width:1160px;margin:0 auto;padding:16px 14px;display:flex;align-items:center;gap:14px}
@media (min-width:900px){.yka-branding{padding:28px 20px;gap:18px}}
.yka-branding img,.yka-branding amp-img{flex:0 0 auto;border-radius:8px;box-shadow:0 0 0 3px rgba(255,255,255,.18)}
.yka-page-layout{max-width:860px;margin:0 auto;padding:24px 14px 36px;display:grid;gap:24px;grid-template-columns:minmax(0,1fr)}
@media (min-width:900px){.yka-page-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:44px 20px 52px}}
.yka-article-card{background:var(--c);border:1px solid var(--b);border-radius:8px;padding:26px 20px}
@media (min-width:600px){.yka-article-card{padding:40px 46px}}
h1{margin:0;color:#fff;font-size:clamp(1.3rem,.95rem + 1.7vw,2.1rem);line-height:1.25;font-weight:700;letter-spacing:-.01em;overflow-wrap:anywhere}
.yka-prose p{margin:0 0 1.2em}.yka-prose p:last-child{margin-bottom:0}
.yka-prose h2{margin:1.9em 0 .7em;color:var(--h);font-size:clamp(1.25rem,1.05rem + .8vw,1.55rem);line-height:1.3;font-weight:700;padding-left:14px;border-left:4px solid var(--a)}
.yka-prose h3{margin:1.4em 0 .45em;color:var(--t);font-size:clamp(1.07rem,1rem + .3vw,1.18rem);line-height:1.35;font-weight:650}
.yka-entry-intro{margin:0 0 .4em}.yka-entry-intro p:first-child{font-size:1.04em}
.yka-topic{margin:0}.yka-topic>h2:first-child{margin-top:1.9em}
.yka-side-panel{background:var(--c);border:1px solid var(--b);border-top:4px solid var(--a);border-radius:8px;padding:20px 22px}
@media (min-width:900px){.yka-side-panel{position:sticky;top:24px}}
.yka-side-panel .yka-panel-title{margin:0 0 8px;font-weight:700;color:var(--t);font-size:1.05rem}
.yka-side-panel ul{list-style:none;margin:0;padding:0}
.yka-side-panel li{padding:10px 0;border-bottom:1px dashed var(--b);font-size:.95rem;line-height:1.55}
.yka-side-panel li:last-child{border-bottom:0;padding-bottom:0}
.yka-side-panel strong{color:var(--t)}
.yka-footer-bar{background:var(--k);color:#eef2f4}
.yka-footer-wrap{max-width:1160px;margin:0 auto;padding:26px 20px 28px;font-size:.92rem;line-height:1.65}
.yka-footer-wrap p{margin:0 0 10px}.yka-site-credit{opacity:.72;font-size:.85rem;margin:0}