:root{--qcnav-h:64px;--qcnav-bg:#fff;--qcnav-border:#e5e7eb;--qcnav-text:#374151;--qcnav-text-hi:#111827;--qcnav-accent:#16a34a;--qcnav-panel-w:340px;--qcnav-radius:10px;--qcnav-t:0.2s ease}[data-theme=dark]{--qcnav-bg:#111827;--qcnav-border:#1f2937;--qcnav-text:#d1d5db;--qcnav-text-hi:#f9fafb}.qcnav{position:fixed;inset-block-start:0;inset-inline:0;z-index:9999;height:var(--qcnav-h);background:var(--qcnav-bg);border-bottom:1px solid var(--qcnav-border);transition:box-shadow var(--qcnav-t),background var(--qcnav-t)}.qcnav--scrolled{box-shadow:0 2px 12px rgba(0,0,0,.08)}.qcnav__inner{max-width:1280px;margin:0 auto;padding:0 24px;height:100%;justify-content:space-between}.qcnav__inner,.qcnav__logo{display:flex;align-items:center}.qcnav__logo{text-decoration:none;flex-shrink:0}.qcnav__logo-name{font-weight:700;letter-spacing:-.01em}.qcnav__logo-name,.qcnav__logo-text{font-size:17px;color:var(--qcnav-text-hi)}.qcnav__logo-text{font-weight:800;letter-spacing:-.02em;white-space:nowrap}.qcnav__controls{display:flex;align-items:center;gap:4px}.qcnav__ctrl-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;background:transparent;border:none;border-radius:var(--qcnav-radius);color:var(--qcnav-text);font-size:13.5px;font-weight:500;cursor:pointer;white-space:nowrap;transition:background var(--qcnav-t),color var(--qcnav-t)}.qcnav__ctrl-btn--active,.qcnav__ctrl-btn:hover{background:#f3f4f6;color:var(--qcnav-text-hi)}[data-theme=dark] .qcnav__ctrl-btn--active,[data-theme=dark] .qcnav__ctrl-btn:hover{background:#1f2937}.qcnav__ctrl-btn-icon{font-size:19px;line-height:1}.qcnav__ctrl-btn-label{font-size:13.5px}.qcnav__menu-btn.qcnav__ctrl-btn--active{background:var(--qcnav-accent);color:#fff}.qcnav__search-wrap{position:relative;display:flex;align-items:center}.qcnav__search-box{display:flex;align-items:center;overflow:hidden;border:1px solid var(--qcnav-border);border-radius:var(--qcnav-radius);background:var(--qcnav-bg);padding:0 8px;height:36px;margin-right:4px}.qcnav__search-glass{font-size:17px;color:#9ca3af;flex-shrink:0}.qcnav__search-input{flex:1;border:none;outline:none;background:transparent;font-size:13.5px;color:var(--qcnav-text-hi);padding:0 6px;min-width:0}.qcnav__search-clear{background:transparent;border:none;cursor:pointer;color:#9ca3af;display:flex;align-items:center;padding:0;flex-shrink:0}.qcnav__suggestions{position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--qcnav-bg);border:1px solid var(--qcnav-border);border-radius:var(--qcnav-radius);box-shadow:0 8px 24px rgba(0,0,0,.12);overflow:hidden;z-index:100;min-width:240px}.qcnav__suggestion{display:flex;align-items:center;gap:10px;padding:10px 14px;text-decoration:none;color:var(--qcnav-text);transition:background var(--qcnav-t)}.qcnav__suggestion:hover{background:#f3f4f6}[data-theme=dark] .qcnav__suggestion:hover{background:#1f2937}.qcnav__suggestion-icon{font-size:18px;color:var(--qcnav-accent);flex-shrink:0}.qcnav__suggestion-label{display:block;font-size:13px;font-weight:600;color:var(--qcnav-text-hi)}.qcnav__suggestion-desc{display:block;font-size:11.5px;color:#6b7280}.qcnav__backdrop{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.45);backdrop-filter:blur(2px)}.qcnav__panel{position:fixed;top:0;right:0;bottom:0;width:var(--qcnav-panel-w);max-width:100vw;z-index:10001;background:var(--qcnav-bg);border-left:1px solid var(--qcnav-border);display:flex;flex-direction:column;overflow:hidden;box-shadow:-8px 0 40px rgba(0,0,0,.15)}.qcnav__panel-header{display:flex;align-items:center;gap:10px;padding:0 20px;height:var(--qcnav-h);border-bottom:1px solid var(--qcnav-border);flex-shrink:0}.qcnav__close-btn{background:transparent;border:none;cursor:pointer;color:var(--qcnav-text);display:flex;align-items:center;padding:6px;border-radius:8px;transition:background var(--qcnav-t)}.qcnav__close-btn:hover{background:#f3f4f6}[data-theme=dark] .qcnav__close-btn:hover{background:#1f2937}.qcnav__home-btn{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border-radius:8px;font-size:13px;font-weight:600;color:var(--qcnav-accent);text-decoration:none;background:rgba(22,163,74,.08);border:1px solid rgba(22,163,74,.2);transition:background var(--qcnav-t),border-color var(--qcnav-t)}.qcnav__home-btn:hover{background:rgba(22,163,74,.15);border-color:var(--qcnav-accent)}.qcnav__panel-body{flex:1;overflow-y:auto;padding:12px 0}.qcnav__section{border-bottom:1px solid var(--qcnav-border)}.qcnav__section-toggle{width:100%;display:flex;align-items:center;gap:10px;padding:13px 20px;background:transparent;border:none;cursor:pointer;color:var(--qcnav-text-hi);font-size:14px;font-weight:600;text-align:left;transition:background var(--qcnav-t)}.qcnav__section-toggle:hover{background:#f9fafb}[data-theme=dark] .qcnav__section-toggle:hover{background:#1f2937}.qcnav__section-icon,.qcnav__section-toggle--open{color:var(--qcnav-accent)}.qcnav__section-icon{font-size:20px}.qcnav__section-label{flex:1}.qcnav__section-arrow{font-size:20px;color:#9ca3af}.qcnav__section-items{overflow:hidden}.qcnav__item{display:flex;align-items:center;gap:12px;padding:10px 20px 10px 48px;text-decoration:none;color:var(--qcnav-text);transition:background var(--qcnav-t),color var(--qcnav-t)}.qcnav__item:hover{background:#f3f4f6;color:var(--qcnav-text-hi)}[data-theme=dark] .qcnav__item:hover{background:#1f2937}.qcnav__item--active{color:var(--qcnav-accent);background:rgba(22,163,74,.06)}.qcnav__item-icon{font-size:19px;flex-shrink:0}.qcnav__item-label{display:block;font-size:13.5px;font-weight:500}.qcnav__item-desc{display:block;font-size:11.5px;color:#9ca3af;margin-top:1px}.qcnav__panel-footer{display:flex;gap:10px;padding:16px 20px;border-top:1px solid var(--qcnav-border);flex-shrink:0}.qcnav__auth-btn{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 14px;border-radius:var(--qcnav-radius);font-size:13.5px;font-weight:600;text-decoration:none;transition:all var(--qcnav-t)}.qcnav__auth-btn--ghost{border:1px solid var(--qcnav-border);color:var(--qcnav-text-hi);background:transparent}.qcnav__auth-btn--ghost:hover{background:#f3f4f6}[data-theme=dark] .qcnav__auth-btn--ghost:hover{background:#1f2937}.qcnav__auth-btn--primary{background:var(--qcnav-accent);color:#fff;border:1px solid var(--qcnav-accent)}.qcnav__auth-btn--primary:hover{opacity:.9}@media (max-width:400px){.qcnav__ctrl-btn-label{display:none}.qcnav__inner{padding:0 12px}}