.site-header{background:var(--color-bg-header);border-bottom:1px solid var(--color-border);z-index:100;box-shadow:var(--shadow-sm);position:sticky;top:0}.header-top{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:16px;display:flex}.nav-brand{color:var(--color-primary);align-items:baseline;font-size:24px;font-weight:800;text-decoration:none;display:flex}.brand-tagline{color:#666;margin-left:8px;font-size:14px;font-weight:400}.header-actions{align-items:center;gap:16px;display:flex}.language-toggle{border:1px solid var(--color-border);border-radius:4px;display:flex;overflow:hidden}.language-toggle button{background:var(--color-bg-body);cursor:pointer;color:var(--color-text-main);border:none;padding:6px 12px;font-size:14px;font-weight:500;transition:all .2s}.language-toggle button.active{background:var(--color-primary);color:var(--color-text-light)}.language-toggle button:hover:not(.active){background:color-mix(in srgb,var(--color-bg-body)90%,black)}.main-nav{background:var(--color-bg-card);border-top:1px solid var(--color-border);padding:0}.main-nav ul{justify-content:center;gap:32px;max-width:1200px;margin:0 auto;padding:0;list-style:none;display:flex}.main-nav li{margin:0;padding:12px 0}.main-nav a{color:var(--color-text-muted);text-transform:uppercase;font-size:15px;font-weight:600;text-decoration:none;transition:color .2s}.main-nav a:hover{color:var(--color-primary)}.tag-new{background:var(--color-secondary);color:#fff;border-radius:2px;margin-left:4px;padding:2px 4px;font-size:10px;animation:2s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.btn{cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;font-family:inherit;font-weight:500;text-decoration:none;transition:all .2s;display:inline-flex}.btn-sm{padding:8px 16px;font-size:14px}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:#003c82}.bg-success{background-color:#2e7d32}.text-white{color:#fff!important}.btn-ghost{color:var(--color-text-main);border:1px solid var(--color-border);background:0 0}.btn-ghost:hover{background:color-mix(in srgb,var(--color-primary)5%,transparent);border-color:var(--color-primary);color:var(--color-primary)}.btn-circle{border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;padding:0;display:inline-flex}.d-none-desktop{display:none!important}@media (max-width:768px){.d-none-mobile{display:none!important}.d-none-desktop{display:inline-flex!important}.header-top{flex-direction:row;justify-content:space-between;padding:12px 16px}.brand-tagline{display:none}.mobile-menu-btn{color:var(--color-primary);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;display:flex}}.mobile-drawer-overlay{z-index:999;opacity:0;visibility:hidden;background:#00000080;width:100vw;height:100vh;transition:opacity .3s;position:fixed;top:0;left:0}.mobile-drawer-overlay.open{opacity:1;visibility:visible}.mobile-drawer{background:var(--color-bg-card);z-index:1000;flex-direction:column;width:280px;height:100vh;transition:left .3s cubic-bezier(.4,0,.2,1);display:flex;position:fixed;top:0;left:-280px;box-shadow:4px 0 15px #00000080}.mobile-drawer.open{left:0}.mobile-drawer-header{border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;padding:20px;display:flex}.mobile-close-btn{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;padding:4px}.mobile-drawer-content{flex:1;padding:20px;overflow-y:auto}.mobile-section{margin-bottom:24px}.mobile-section-title{text-transform:uppercase;color:#888;letter-spacing:.5px;margin:0 0 12px;font-size:12px;font-weight:700}.mobile-nav-links{margin:0;padding:0;list-style:none}.mobile-nav-links li{margin-bottom:8px}.mobile-nav-links a{color:var(--color-text-main);border-radius:6px;padding:12px;font-weight:600;text-decoration:none;transition:background .2s;display:block}.mobile-nav-links a:hover{background:color-mix(in srgb,var(--color-primary)10%,transparent);color:var(--color-primary)}.user-menu-container{position:relative}.user-avatar-btn{background:var(--color-bg-body);border:1px solid var(--color-border);color:var(--color-primary);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;padding:0;transition:all .2s;display:inline-flex}.user-avatar-btn:hover{background:color-mix(in srgb,var(--color-bg-body)90%,black);box-shadow:var(--shadow-sm)}.user-dropdown-menu{background:var(--color-bg-card);border:1px solid var(--color-border);width:200px;box-shadow:var(--shadow-md);z-index:200;border-radius:8px;animation:.2s ease-out fadeInDown;position:absolute;top:50px;right:0;overflow:hidden}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.user-dropdown-header{background:color-mix(in srgb,var(--color-bg-card)95%,var(--color-bg-body));padding:16px}.user-dropdown-name{color:var(--color-text-main);margin:0 0 4px;font-size:14px;font-weight:700}.user-dropdown-email{color:var(--color-text-muted);margin:0;font-size:12px}.user-dropdown-divider{background:var(--color-border);height:1px;margin:0}.user-dropdown-item{text-align:left;width:100%;color:var(--color-text-main);cursor:pointer;background:0 0;border:none;padding:12px 16px;font-size:14px;font-weight:500;text-decoration:none;transition:background .2s;display:block}.user-dropdown-item:hover{background:color-mix(in srgb,var(--color-primary)5%,transparent);text-decoration:none}.user-dropdown-item.text-danger{color:var(--color-secondary)}.user-dropdown-item.text-danger:hover{background:color-mix(in srgb,var(--color-secondary)5%,transparent)}.theme-switch-wrapper{justify-content:space-between;align-items:center;width:100%;display:flex}.theme-switch{width:44px;height:24px;display:inline-block;position:relative}.theme-switch input{opacity:0;width:0;height:0}.slider{cursor:pointer;background-color:#ccc;border-radius:24px;transition:all .4s;position:absolute;inset:0}.slider:before{content:"";background-color:#fff;border-radius:50%;width:18px;height:18px;transition:all .4s;position:absolute;bottom:3px;left:3px;box-shadow:0 2px 4px #0003}input:checked+.slider{background-color:var(--color-primary)}input:focus+.slider{box-shadow:0 0 1px var(--color-primary)}input:checked+.slider:before{transform:translate(20px)}