:root{--blue:#0A438A;--blueDark:#08356E;--ink:#0A1F3C;--body:#4A4A4A;--line:#E5E7EB;--cream:#F4F1EA;--mute:#6B7280}
*{box-sizing:border-box}
body{margin:0;background:#FFF;font-family:'Inter',system-ui,-apple-system,sans-serif;color:var(--body);-webkit-font-smoothing:antialiased;line-height:1.65}
a{color:var(--blue)}
a:hover{color:var(--blueDark)}
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{max-width:880px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.nav img{height:28px;width:auto;display:block}
.back{font-size:14px;font-weight:600;text-decoration:none}
.wrap{max-width:880px;margin:0 auto;padding:clamp(40px,7vw,72px) 24px 96px}
h1{font-size:clamp(30px,5vw,42px);line-height:1.12;font-weight:800;letter-spacing:-.03em;color:var(--ink);margin:0 0 10px;text-wrap:pretty}
.upd{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:12.5px;color:var(--mute);margin:0 0 30px}
h2{font-size:20px;font-weight:700;color:var(--ink);margin:44px 0 12px;letter-spacing:-.015em;scroll-margin-top:84px}
h3{font-size:15.5px;font-weight:600;color:var(--ink);margin:26px 0 8px}
p,li{font-size:15.5px}
ul,ol{padding-left:22px}
li{margin-bottom:7px}
.box{background:var(--cream);border-radius:12px;padding:20px 22px;margin:22px 0}
.box p:first-child{margin-top:0}.box p:last-child{margin-bottom:0}
.fill{background:#FFF6D6;border:1px solid #F0D98A;border-radius:8px;padding:2px 8px;font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:13px;color:#7A5B00;white-space:nowrap}
.tbl-wrap{overflow-x:auto;margin:18px 0;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;min-width:620px;font-size:13.5px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--cream);font-weight:600;color:var(--ink);white-space:nowrap}
tr:last-child td{border-bottom:none}
td code{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:12.5px;background:#F6F7F9;padding:2px 6px;border-radius:4px;white-space:nowrap}
.btn{display:inline-block;background:var(--blue);color:#FFF;padding:12px 22px;border-radius:8px;font-weight:600;font-size:14.5px;text-decoration:none;border:none;cursor:pointer;font-family:inherit}
.btn:hover{background:var(--blueDark);color:#FFF}
.langsw{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.langsw button{padding:8px 14px;font-size:13px;font-weight:600;border:none;background:#FFF;color:var(--mute);cursor:pointer;font-family:inherit}
.langsw button.on{background:var(--blue);color:#FFF}
[data-lang]{display:none}
[data-lang].show{display:block}
footer{border-top:1px solid var(--line);margin-top:60px;padding-top:26px;font-size:13px;color:var(--mute)}
footer a{margin-right:18px}
@media (max-width:560px){.nav-in,.wrap{padding-left:16px;padding-right:16px}}