:root{--qmf-header-h:60px;--qmf-header-bg:rgba(255, 255, 255, 0.92);--qmf-header-border:#e2e8f0;--qmf-header-blur:blur(20px) saturate(1.8);--qmf-header-shadow:0 1px 3px rgba(0, 0, 0, 0.04),0 4px 12px rgba(0, 0, 0, 0.02);--qmf-header-text:#1e293b;--qmf-header-muted:#64748b;--qmf-header-btn-bg:rgba(255, 255, 255, 0.7);--qmf-header-btn-border:rgba(0, 0, 0, 0.1);--qmf-header-btn-hover-bg:rgba(139, 105, 20, 0.08);--qmf-header-btn-hover-color:#8b6914;--qmf-header-brand-gradient:linear-gradient(135deg, #8b6914, #5c4a9e)}[data-theme=dark],body.dark-mode{--qmf-header-bg:rgba(15, 23, 42, 0.95);--qmf-header-border:#1e293b;--qmf-header-shadow:0 1px 3px rgba(0, 0, 0, 0.2),0 4px 12px rgba(0, 0, 0, 0.15);--qmf-header-text:#e2e8f0;--qmf-header-muted:#94a3b8;--qmf-header-btn-bg:rgba(255, 255, 255, 0.06);--qmf-header-btn-border:rgba(255, 255, 255, 0.1);--qmf-header-btn-hover-bg:rgba(212, 168, 67, 0.12);--qmf-header-btn-hover-color:#d4a843;--qmf-header-brand-gradient:linear-gradient(135deg, #d4a843, #9b8ce0)}.lab-header{position:fixed;top:0;left:0;right:0;z-index:1001;height:var(--qmf-header-h);background:var(--qmf-header-bg);backdrop-filter:var(--qmf-header-blur);-webkit-backdrop-filter:var(--qmf-header-blur);border-bottom:1px solid var(--qmf-header-border);box-shadow:var(--qmf-header-shadow);transition:background .25s cubic-bezier(.4, 0, .2, 1),border-color .25s cubic-bezier(.4, 0, .2, 1),box-shadow .25s cubic-bezier(.4, 0, .2, 1);margin:0;padding:0;display:block}.lab-header__inner{max-width:1280px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:relative}.lab-header__brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--qmf-header-text);transition:opacity .2s}.lab-header__brand:hover{opacity:.85}.lab-header__logo{height:36px;width:auto;border-radius:8px;transition:transform .25s cubic-bezier(.34, 1.56, .64, 1)}.lab-header__brand:hover .lab-header__logo{transform:scale(1.06)}.lab-header__titles{display:flex;flex-direction:column;line-height:1.2}.lab-header__name{font-size:1.05rem;font-weight:700;letter-spacing:-.01em;color:var(--qmf-header-text)}.lab-header__sub{font-size:.72rem;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--qmf-header-muted);opacity:.75}.lab-header__center,.lab-header__qm-group{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--qmf-header-text)}.lab-header__qm-group picture{display:flex;align-items:center}.lab-header__qm-logo{height:26px;width:auto;opacity:.85;transition:opacity .25s,transform .3s cubic-bezier(.34, 1.56, .64, 1)}.lab-header__qm-logo:hover{opacity:1;transform:scale(1.05)}.lab-header__qm-texts{display:flex;flex-direction:column;align-items:center;text-align:center;line-height:1.15}.lab-header__qm-name{font-size:.95rem;font-weight:700;letter-spacing:-.01em;background:var(--qmf-header-brand-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.lab-header__qm-sub{display:none;font-size:.6rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--qmf-header-muted);opacity:.55;transition:opacity .25s;background:0 0!important;-webkit-background-clip:unset!important;background-clip:unset!important;-webkit-text-fill-color:unset!important}.lab-header__qm-group:hover .lab-header__qm-sub{opacity:.85}.lab-header__actions{display:flex;align-items:center;gap:8px}.lab-header__btn{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--qmf-header-btn-border);background:var(--qmf-header-btn-bg);color:var(--qmf-header-muted);cursor:pointer;font-size:1rem;transition:all .2s cubic-bezier(.4, 0, .2, 1);text-decoration:none;font-family:inherit;padding:0;line-height:1}.lab-header__btn:hover{background:var(--qmf-header-btn-hover-bg);color:var(--qmf-header-btn-hover-color);border-color:var(--qmf-header-btn-hover-color);transform:translateY(-1px)}.lab-header__btn:active{transform:translateY(0)}@media (max-width:768px){.lab-header__brand{display:none}.lab-header__center{display:none}.lab-header__qm-group{display:flex;position:absolute;left:50%;transform:translateX(-50%);gap:10px}.lab-header__qm-logo{height:32px;opacity:1;filter:drop-shadow(0 1px 4px rgba(139, 105, 20, .18));transition:transform .35s cubic-bezier(.34, 1.56, .64, 1),filter .3s ease}.lab-header__qm-group:active .lab-header__qm-logo{transform:scale(.92)}.lab-header__qm-texts{display:flex;flex-direction:column;line-height:1.15;gap:1px}.lab-header__qm-name{font-size:.95rem;font-weight:800;letter-spacing:-.01em}.lab-header__qm-sub{display:block;font-size:.6rem;font-weight:600;letter-spacing:.08em;opacity:.6;transition:opacity .25s}.lab-header__qm-group:hover .lab-header__qm-sub{opacity:.85}.lab-header__actions{gap:6px;margin-left:auto}.lab-header__actions>a.lab-header__btn{display:none}.lab-header__actions>#theme-btn{display:none}}@media (max-width:768px){[data-theme=dark] .lab-header__qm-logo,body.dark-mode .lab-header__qm-logo{filter:drop-shadow(0 1px 6px rgba(212, 168, 67, .25))}}@media (max-width:480px){.lab-header__inner{padding:0 10px}.lab-header__qm-group{gap:7px}.lab-header__qm-logo{height:26px}.lab-header__qm-name{font-size:.82rem;font-weight:800}.lab-header__qm-sub{font-size:.52rem}.lab-header__actions{gap:4px}.page-title.compact{padding:.6rem 0;margin-bottom:1rem}.page-title.compact h1{font-size:1.1rem;gap:.35rem}.page-title h1{font-size:1.2rem}}