.public-nav{position:-webkit-sticky;position:sticky;top:0;z-index:100;width:100%;background:rgba(8,8,17,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--color-border)}.nav-inner{max-width:1280px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:32px}.nav-logo{display:flex;align-items:baseline;gap:2px;text-decoration:none;flex-shrink:0}.nav-logo-k{font-size:22px;font-weight:900;background:var(--gradient-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-1px}.nav-logo-k,.nav-logo-text{font-family:var(--font-heading)}.nav-logo-text{font-size:13px;font-weight:700;color:var(--color-text-secondary);letter-spacing:2px}.nav-tabs{display:flex;gap:4px;flex:1 1;min-width:0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;-webkit-overflow-scrolling:touch}.nav-tabs::-webkit-scrollbar{display:none}.nav-tab{position:relative;display:flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--radius-full);font-size:13px;font-weight:600;color:var(--color-text-muted);text-decoration:none;transition:color var(--transition-fast);white-space:nowrap;font-family:var(--font-heading);flex-shrink:0}.nav-tab.active,.nav-tab:hover{color:var(--color-text-primary)}.nav-tab-icon{font-size:13px;line-height:1}.nav-tab-indicator{position:absolute;inset:0;background:rgba(143,67,255,.18);border:1px solid rgba(143,67,255,.4);border-radius:var(--radius-full);z-index:-1}.nav-right{margin-left:auto;flex-shrink:0;display:flex;align-items:center;gap:20px}.nav-home-link{font-size:13px;color:var(--color-text-muted);font-weight:500;transition:color var(--transition-fast)}.nav-home-link:hover{color:var(--color-text-primary)}.nav-lang-toggle{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.05);padding:4px 8px;border-radius:var(--radius-full);border:1px solid rgba(255,255,255,.08)}.lang-btn{background:none;border:none;color:var(--color-text-muted);font-size:11px;font-weight:700;cursor:pointer;padding:2px 6px;border-radius:4px;transition:all var(--transition-fast)}.lang-btn:hover{color:var(--color-text-primary)}.lang-btn.active{color:var(--color-accent-purple,#8f43ff);text-shadow:0 0 8px rgba(143,67,255,.4)}.lang-divider{color:rgba(255,255,255,.15);font-size:10px}@media (max-width:640px){.nav-inner{padding:0 16px;gap:16px}.nav-home-link,.nav-logo-text,.nav-tab-icon{display:none}}