:root{--bg:#080b16;--panel:#11162a;--panel2:#171d35;--text:#f7f8ff;--muted:#aeb7d0;--violet:#7c3aed;--cyan:#00d4ff;--line:rgba(124,58,237,.35)}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;min-width:0;overflow-x:hidden;background:radial-gradient(circle at 20% 0%,#1a1740 0,#080b16 42%);color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:underline}.site-header{position:sticky;top:0;z-index:20;background:rgba(8,11,22,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{max-width:1180px;margin:auto;padding:14px 20px;display:flex;align-items:center;gap:20px}.brand{font-weight:900;letter-spacing:.04em;color:#fff;white-space:nowrap}.brand span{color:var(--cyan)}.nav{display:flex;gap:14px;align-items:center;margin-left:auto;flex-wrap:wrap}.nav a{color:var(--muted);font-size:.92rem}.lang-switch,.theme-btn{border:1px solid var(--line);background:var(--panel);color:#fff;border-radius:999px;padding:8px 12px;cursor:pointer}.hero{max-width:980px;margin:0 auto;padding:70px 20px 24px;text-align:center}.eyebrow{color:var(--cyan);text-transform:uppercase;letter-spacing:.18em;font-weight:800;font-size:.78rem}.hero h1{font-size:clamp(2.2rem,7vw,4.8rem);line-height:1.05;margin:.3em 0}.hero p{color:var(--muted);max-width:760px;margin:auto;font-size:1.08rem}.doc-wrap{max-width:980px;margin:0 auto;padding:24px 20px 80px}.doc-card{background:linear-gradient(180deg,rgba(23,29,53,.96),rgba(17,22,42,.96));border:1px solid var(--line);border-radius:24px;padding:clamp(22px,4vw,52px);box-shadow:0 30px 80px rgba(0,0,0,.28)}.doc-card h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.1;margin-top:0}.doc-card h2{color:#b9a2ff;margin-top:2rem}.doc-card h3{color:#fff;margin-top:1.5rem}.doc-card p,.doc-card li{color:#d7dcef}.doc-card hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}.doc-card code{background:#090d1d;padding:.15em .4em;border-radius:6px}.doc-card blockquote{border-left:3px solid var(--violet);margin-left:0;padding-left:1rem;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;max-width:1100px;margin:35px auto 80px;padding:0 20px}.tile{display:block;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:24px;transition:.2s transform,.2s border-color}.tile:hover{transform:translateY(-4px);border-color:var(--cyan);text-decoration:none}.tile h2{margin:0 0 8px;color:#fff}.tile p{margin:0;color:var(--muted)}footer{border-top:1px solid var(--line);padding:28px 20px;color:var(--muted);text-align:center}.light{--bg:#f6f7fb;--panel:#fff;--panel2:#fff;--text:#111427;--muted:#5e667a;--line:rgba(124,58,237,.2);background:#f6f7fb;color:var(--text)}.light .site-header{background:rgba(255,255,255,.92)}.light .brand,.light .theme-btn,.light .lang-switch{color:#111427}.light .doc-card,.light .tile{background:#fff}.light .doc-card p,.light .doc-card li{color:#252a3b}.light .doc-card h3,.light .tile h2{color:#111427}@media(max-width:760px){.header-inner{align-items:flex-start;flex-wrap:wrap}.nav{width:100%;margin-left:0;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}.nav a{white-space:nowrap}.hero{padding-top:42px}.doc-wrap{padding-left:12px;padding-right:12px}.doc-card{border-radius:18px;padding:22px 18px}}

/* V6.6 mobile navigation visibility */
.nav a{color:#f7fbff}.nav .lang-switch{color:#fff!important;border-color:rgba(81,176,255,.55)!important;background:rgba(7,18,38,.92)!important}
@media(max-width:900px){.header-inner{align-items:flex-start}.nav{gap:8px}.nav a{background:rgba(8,16,34,.92);border:1px solid rgba(255,255,255,.09);padding:9px 11px;border-radius:10px}}