:root {
  --bg-primary: #0a0a0a;
  --bg-card: #141414;
  --bg-surface: #1c1c1c;
  --border: #222222;
  --border-subtle: #1a1a1a;
  --text-primary: #f0f0f0;
  --text-secondary: #888888;
  --text-muted: #555555;
  --neon: #d4ff00;
  --neon-dim: rgba(212,255,0,0.10);
  --accent-blue: #3b82f6;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg-primary);color:var(--text-primary);font-family:var(--font);min-height:100vh;-webkit-font-smoothing:antialiased}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:#2a2a2a;border-radius:3px}

.navbar{position:fixed;top:0;left:0;right:0;z-index:100;height:60px;background:rgba(10,10,10,.9);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 32px}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;letter-spacing:-.3px;color:var(--text-primary);text-decoration:none}
.logo-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px var(--neon)}
.navbar-badge{background:var(--neon-dim);border:1px solid rgba(212,255,0,.2);color:var(--neon);font-size:11px;font-weight:600;padding:2px 8px;border-radius:20px;letter-spacing:.5px}
.navbar-right{display:flex;align-items:center;gap:12px}
.lang-toggle{position:relative}
.lang-btn{display:flex;align-items:center;gap:7px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:6px 10px;cursor:pointer;color:var(--text-secondary);font-size:12px;font-weight:600;font-family:var(--font);transition:all .2s}
.lang-btn:hover{border-color:rgba(212,255,0,.25);color:var(--text-primary)}
.lang-flag{width:20px;height:20px;border-radius:50%;object-fit:cover;display:block;flex-shrink:0}
.lang-arrow{font-size:9px;transition:transform .2s;display:block}
.lang-dropdown{display:none;position:absolute;right:0;top:calc(100% + 8px);background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:6px;min-width:148px;box-shadow:0 8px 24px rgba(0,0,0,.5);z-index:200}
.lang-dropdown.open{display:block}
.lang-option{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:7px;cursor:pointer;font-size:13px;color:var(--text-secondary);transition:all .15s;font-family:var(--font)}
.lang-option:hover{background:var(--bg-surface);color:var(--text-primary)}
.lang-option.active{color:var(--neon)}

.page-wrap{max-width:860px;margin:0 auto;padding:100px 32px 60px}
.page-header{margin-bottom:48px}
.page-header h1{font-size:28px;font-weight:800;letter-spacing:-.6px;margin-bottom:8px}
.page-header .updated{font-size:12px;color:var(--text-muted)}
.section{margin-bottom:36px}
.section h2{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--border-subtle)}
.section p,.section li{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:8px}
.section ul{padding-left:20px}
.section a{color:var(--neon);text-decoration:none}
.section a:hover{text-decoration:underline}

.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:16px}
.card h3{font-size:14px;font-weight:700;color:var(--text-primary);margin-bottom:8px}
.card p{font-size:13px;color:var(--text-secondary);line-height:1.65}

.tag-inline{display:inline-block;font-size:11px;font-weight:500;padding:2px 8px;border-radius:4px;background:#1e1e1e;border:1px solid #2a2a2a;color:var(--text-secondary);margin-right:6px;margin-bottom:4px}

.code-block{background:#0d0d0d;border:1px solid #1e1e1e;border-radius:var(--radius-sm);padding:16px 18px;font-family:'JetBrains Mono','Fira Code','Courier New',monospace;font-size:13px;color:#e879f9;overflow-x:auto;white-space:nowrap;margin:12px 0}
.code-block .prefix{color:#6ee7b7}

.step{display:flex;gap:16px;margin-bottom:24px;align-items:flex-start}
.step-num{width:32px;height:32px;border-radius:8px;background:var(--neon-dim);border:1px solid rgba(212,255,0,.2);color:var(--neon);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.step-body h3{font-size:14px;font-weight:700;color:var(--text-primary);margin-bottom:6px}
.step-body p{font-size:13px;color:var(--text-secondary);line-height:1.65}

.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px;overflow:hidden}
.faq-q{width:100%;background:var(--bg-card);border:none;padding:18px 20px;text-align:left;font-size:14px;font-weight:600;color:var(--text-primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-family:var(--font);transition:background .2s}
.faq-q:hover{background:#1a1a1a}
.faq-q .arrow{color:var(--text-muted);font-size:12px;transition:transform .2s}
.faq-q.open .arrow{transform:rotate(180deg)}
.faq-a{display:none;padding:0 20px 18px;font-size:13px;color:var(--text-secondary);line-height:1.7;background:var(--bg-card)}
.faq-a.open{display:block}
.faq-a a{color:var(--neon)}

.grid-bg{position:fixed;inset:0;z-index:-2;overflow:hidden}
.grid-bg::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(212,255,0,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(212,255,0,.02) 1px,transparent 1px);background-size:60px 60px}

.footer{border-top:1px solid var(--border);background:#080808;margin-top:60px}
.footer-main{max-width:1200px;margin:0 auto;padding:56px 32px 48px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;letter-spacing:-.3px;color:var(--text-primary);margin-bottom:14px}
.footer-desc{font-size:13px;color:var(--text-muted);line-height:1.65;max-width:280px;margin-bottom:22px}
.footer-social{display:flex;gap:10px}
.social-link{width:34px;height:34px;border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);text-decoration:none;transition:all .2s}
.social-link:hover{border-color:rgba(212,255,0,.3);color:var(--neon)}
.social-link svg{width:16px;height:16px}
.footer-col-title{font-size:10px;font-weight:700;letter-spacing:1.2px;color:var(--text-muted);margin-bottom:16px}
.footer-link{display:block;font-size:13px;color:var(--text-secondary);text-decoration:none;margin-bottom:10px;transition:color .2s}
.footer-link:hover{color:var(--text-primary)}
.footer-bottom{border-top:1px solid var(--border-subtle);max-width:1200px;margin:0 auto;padding:20px 32px;display:flex;align-items:center;justify-content:space-between}
.footer-bottom span{font-size:12px;color:var(--text-muted)}
.footer-bottom a{font-size:12px;color:var(--text-muted);text-decoration:none;display:flex;align-items:center;gap:6px;transition:color .2s}
.footer-bottom a:hover{color:var(--text-secondary)}
@media(max-width:900px){.footer-main{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media(max-width:600px){.footer-main{grid-template-columns:1fr;padding:40px 16px 32px}.footer-bottom{padding:16px;flex-direction:column;gap:8px;text-align:center}.page-wrap{padding-left:16px;padding-right:16px}.navbar{padding:0 16px}}