*{box-sizing:border-box}html{font-size:16px}body{margin:0;background:#f5f7fa;color:#182230;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8}a{color:#0865c8;text-underline-offset:4px}a:hover{color:#034785}a:focus-visible,summary:focus-visible{outline:3px solid #1672dc;outline-offset:5px}header,main,footer{max-width:900px;margin:auto;padding:24px}header{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:12px;color:#182230;text-decoration:none;font-weight:700;font-size:20px}.brand img{width:44px;height:44px;border-radius:10px}nav{display:flex;gap:20px;flex-wrap:wrap}nav a{font-size:16px}nav a[aria-current=page]{font-weight:700;color:#182230}main{padding-top:12px}article{padding:40px;background:white;border:1px solid #e2e8f0;border-radius:20px}h1{font-size:clamp(28px,5vw,38px);line-height:1.35;margin:0 0 18px}h2{font-size:22px;margin:32px 0 12px;line-height:1.5}p,ul,ol{margin:12px 0}li{margin:6px 0}.intro{font-size:18px;color:#46566a}.meta{color:#5c697a;font-size:14px}.links{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}.links a{padding:20px;background:#f0f6ff;border-radius:12px;text-decoration:none}.links strong{display:block;font-size:20px}.links span{display:block;color:#46566a;margin-top:5px}footer{color:#586577;font-size:14px;overflow-wrap:anywhere}.contact{overflow-wrap:anywhere}.note{padding:14px 18px;border-left:3px solid #1672dc;background:#f0f6ff}details{border-top:1px solid #e2e8f0;padding:14px 0}summary{cursor:pointer;font-weight:600}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:white;padding:12px;z-index:1}@media(max-width:540px){header,main,footer{padding:18px}article{padding:24px 20px;border-radius:16px}.links{grid-template-columns:1fr}nav{gap:16px}h2{font-size:21px}}
/* Language navigation */
.languages{flex-basis:100%;gap:16px;border-top:1px solid #e2e8f0;padding-top:12px}
.languages a{font-size:14px}.languages a[aria-current=true]{color:#182230;font-weight:700;text-decoration:none}
article{overflow-wrap:anywhere}nav a{white-space:nowrap}