:root{color-scheme:light;--night:#061f36;--blue:#1684a7;--ice:#eefafb;--ink:#0b2435;--muted:#607680;--line:#d6e7ea}*{box-sizing:border-box}body{margin:0;padding:28px 18px;background:linear-gradient(180deg,var(--night),#0b3a5b 310px,var(--ice) 310px);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}main{width:min(820px,100%);margin:auto;padding:34px;border:1px solid var(--line);border-radius:26px;background:#fff;box-shadow:0 28px 80px #001a2d44}img{width:210px;height:auto}h1{margin:28px 0 4px;font-size:clamp(34px,7vw,54px);line-height:1}h2{margin-top:30px;font-size:21px}.date{margin-top:0;color:var(--muted)}.notice{padding:16px 18px;border-radius:14px;background:#e6faf3;font-weight:700}nav{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}button{padding:9px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;font:inherit;font-weight:700;cursor:pointer}button.active{background:var(--night);color:#fff}a{color:var(--blue)}[data-lang]{display:none}[data-lang].active{display:block}@media(max-width:560px){main{padding:24px;border-radius:20px}}