:root{--glass-header-height:60px;--glass-header-z:500}.glass-header{position:fixed;top:0;left:0;right:0;z-index:var(--glass-header-z);background:rgba(255,255,255,.70);backdrop-filter:saturate(140%) blur(16px);border-bottom:1px solid rgba(226,232,240,.80)}.glass-header--sticky{position:sticky}html[data-theme="dark"] .glass-header{background:rgba(15,23,42,.78);border-bottom-color:rgba(51,65,85,.70)}.glass-header-inner{max-width:1140px;margin:0 auto;padding:0 20px;height:var(--glass-header-height);display:flex;align-items:center;justify-content:space-between;gap:16px}.glass-header-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}.glass-header-logo img{height:28px;width:auto;flex-shrink:0}.glass-header-back{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:#475569;text-decoration:none;border-radius:var(--radius-sm);padding:5px 10px 5px 6px;transition:background .15s,color .15s}.glass-header-back:hover{background:rgba(15,106,216,.08);color:#0f172a}.glass-header-back svg{flex-shrink:0}html[data-theme="dark"] .glass-header-back{color:#94a3b8}html[data-theme="dark"] .glass-header-back:hover{color:#f1f5f9}.app-header{min-height:var(--glass-header-height)}