:root{--bg:#0b1220;--card:#0f1a2e;--text:#e7eefc;--muted:#a9b7d6;--link:#7cb7ff;--border:rgba(255,255,255,.08);--btn:#1d4ed8;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:linear-gradient(180deg,#060a14,#0b1220 35%,#060a14);color:var(--text);}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:980px;margin:0 auto;padding:28px 18px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 0}
.brand{display:flex;flex-direction:column;gap:2px}
.brand b{font-size:16px}
.brand span{color:var(--muted);font-size:13px}
.lang{display:flex;gap:10px}
.lang a{padding:8px 10px;border:1px solid var(--border);border-radius:12px}
.card{background:rgba(15,26,46,.75);border:1px solid var(--border);border-radius:18px;padding:20px;backdrop-filter: blur(8px);}
.grid{display:grid;grid-template-columns:1.15fr .85fr;gap:14px}
@media (max-width:820px){.grid{grid-template-columns:1fr}}
h1{margin:0 0 10px;font-size:30px;letter-spacing:.2px}
h2{margin:22px 0 10px;font-size:20px}
p{color:var(--muted);line-height:1.6;margin:8px 0}
ul{margin:10px 0 0 18px;color:var(--muted);line-height:1.6}
.badge{display:inline-flex;gap:8px;align-items:center;padding:8px 12px;border:1px solid var(--border);border-radius:999px;color:var(--muted);font-size:13px}
.btn{display:inline-block;background:var(--btn);color:white;padding:10px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.12)}
.btn:hover{text-decoration:none;filter:brightness(1.07)}
.footer{margin-top:22px;padding-top:14px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:var(--muted);font-size:13px}
.small{font-size:13px;color:var(--muted)}
.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:10px;padding:2px 8px}
.codeblock{white-space:pre-wrap;background:rgba(0,0,0,.25);border:1px solid var(--border);border-radius:14px;padding:14px;color:#eaf1ff;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:13px;line-height:1.5}