@keyframes ccPulse{0%,100%{opacity:1}50%{opacity:.35}}.hdr{position:sticky;top:0;z-index:var(--cc-z-header,100);background:#fff;border-bottom:1px solid var(--cc-border)}.hdr-inner{display:flex;align-items:center;gap:24px;padding:0 28px;height:60px;max-width:1440px;margin:0 auto}.hdr-logo{display:flex;align-items:center;gap:9px;text-decoration:none;flex-shrink:0}.hdr-logo-icon.cc-logo-gradient{display:inline-block;width:26px;height:26px;border-radius:7px;background:var(--cc-brand-gradient);flex-shrink:0}.hdr-logo-text{font-weight:800;font-size:18px;color:#1e293b;letter-spacing:-.02em;white-space:nowrap}.hdr-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex-shrink:0}.hdr-nav-link{display:inline-flex;align-items:center;padding:6px 10px;font-size:14px;font-weight:500;color:var(--cc-text-secondary);text-decoration:none;border-radius:8px;transition:background .12s,color .12s;white-space:nowrap;cursor:pointer}.hdr-nav-link:hover{color:#1e293b;background:var(--cc-surface-hover)}.hdr-nav-link--active{color:#1e293b;font-weight:600}.hdr-dropdown{position:relative}.hdr-dropdown-toggle{list-style:none;user-select:none}.hdr-dropdown-toggle::-webkit-details-marker{display:none}.hdr-dropdown-toggle::after{content:' ▾';font-size:10px;opacity:.6}.hdr-dropdown[open]>.hdr-dropdown-toggle{color:#1e293b;background:var(--cc-surface-hover)}.hdr-dropdown-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:220px;list-style:none;margin:0;padding:6px;background:#fff;border:1px solid var(--cc-border);border-radius:12px;box-shadow:0 8px 24px -4px rgba(15,23,42,.14),0 2px 8px -2px rgba(15,23,42,.08);z-index:200}.hdr-dropdown-menu li a{display:block;padding:8px 12px;font-size:13.5px;color:var(--cc-text-secondary);text-decoration:none;border-radius:8px;transition:background .1s,color .1s}.hdr-dropdown-menu li a:hover{color:#1e293b;background:var(--cc-bg-subtle)}.hdr-right{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}.hdr-search{display:flex;align-items:center;gap:8px;width:300px;height:38px;padding:0 14px;background:#f1f5f9;border:1px solid var(--cc-border);border-radius:9px;font-size:13px;color:var(--cc-text-light);cursor:pointer;font-family:inherit;transition:border-color .15s,box-shadow .15s;white-space:nowrap;overflow:hidden}.hdr-search:hover{border-color:var(--cc-border-light);background:#e9eef5}.hdr-search:focus-visible{outline:2px solid var(--cc-blue);outline-offset:2px}.hdr-search-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#94a3b8;flex-shrink:0}.hdr-search-placeholder{flex:1;text-align:left;font-size:13px;color:#475569;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hdr-search-kbd{margin-left:auto;flex-shrink:0;font-family:var(--cc-font-mono);font-size:11px;background:#fff;border:1px solid var(--cc-border);border-radius:5px;padding:1px 6px;color:#475569;line-height:1.6}.hdr-streak-chip{display:flex;align-items:center;gap:4px;height:34px;padding:0 11px;background:#fff7ed;border:1px solid #fed7aa;border-radius:9px;font-weight:700;font-size:13px;color:#c2410c;text-decoration:none;white-space:nowrap;transition:background .12s}.hdr-streak-chip:hover{background:#ffedd5}.hdr-streak-count{font-family:var(--cc-font-mono)}.hdr-bell{position:relative;display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;background:#f1f5f9;border:1px solid var(--cc-border);color:#475569;text-decoration:none;transition:background .12s}.hdr-bell:hover{background:#e2e8f0}.hdr-bell-badge{position:absolute;top:-3px;right:-3px;min-width:16px;height:16px;padding:0 3px;border-radius:50%;background:#ef4444;border:2px solid #fff;font-size:9px;font-weight:700;color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--cc-font-mono)}.hdr-signin{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:9px;font-weight:600;font-size:14px;text-decoration:none;transition:background .15s;white-space:nowrap}.btn-green,.hdr-signin.btn-green{background:#047857;color:#fff}.btn-green:hover,.hdr-signin.btn-green:hover{background:#036b47;color:#fff}.hdr-user-avatar{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--cc-brand-gradient);color:#fff;font-size:13px;font-weight:700;text-decoration:none;flex-shrink:0}@media (max-width:900px){.hdr-search{width:200px}.hdr-nav{gap:2px}.hdr-nav-link{padding:11px 8px;font-size:13px}}@media (max-width:768px){.hdr-inner{gap:12px;padding:0 16px}.hdr-search{width:160px}.hdr-nav,.hdr-search-placeholder{display:none}}.skip-link{position:absolute;left:-9999px;top:0;z-index:2000;padding:10px 16px;background:#1d4ed8;color:#fff;font-weight:600;border-radius:0 0 6px;text-decoration:none}.skip-link:focus{left:0;outline:#fff solid 2px;outline-offset:-4px}.hdr--cc{background:#0e1729;border-bottom-color:#1e2b45}.hdr--cc .hdr-logo-text{color:#f1f5f9}.hdr--cc .hdr-nav-link{color:#a7b4cc}.hdr--cc .hdr-dropdown[open]>.hdr-dropdown-toggle,.hdr--cc .hdr-nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}.hdr--cc .hdr-nav-link--active{color:#fff}.hdr--cc .hdr-search{background:rgba(255,255,255,.06);border-color:#26344f;color:#cbd5e1}.hdr--cc .hdr-search:hover{background:rgba(255,255,255,.1);border-color:#33456a}.hdr--cc .hdr-search-placeholder{color:#94a3b8}.hdr--cc .hdr-search-dot{background:#34d399}.hdr--cc .hdr-search-kbd{background:rgba(255,255,255,.08);border-color:#33456a;color:#cbd5e1}.hdr--cc .hdr-inner{height:54px}.hdr-alpha{font-family:var(--cc-font-mono);font-size:10px;font-weight:700;letter-spacing:.1em;color:#34d399;background:rgba(52,211,153,.14);border:1px solid rgba(52,211,153,.3);border-radius:6px;padding:2px 7px}.hdr-tagline{display:flex;align-items:center;gap:8px;max-width:1440px;margin:0 auto;padding:0 28px 12px;font-size:13px;color:#93a3bd;flex-wrap:wrap}.hdr-tagline-code{font-family:var(--cc-font-mono);color:#6ea8fe;font-weight:700}.hdr-tagline-text{color:#cbd5e1}.hdr-tagline-sep{color:#3a4a68}.hdr-tagline-count{display:inline-flex;align-items:center;gap:7px;color:#34d399;font-weight:500}.hdr-tagline-dot{width:6px;height:6px;border-radius:50%;background:#34d399}.hdr-navrow{display:flex;align-items:center;max-width:1440px;margin:0 auto;padding:0 28px 12px}.hdr-navrow .hdr-nav{display:flex;align-items:center;gap:6px;margin:0}.hdr-navrow .hdr-nav-link{display:inline-flex;align-items:center;gap:7px;padding:7px 13px;font-size:13.5px;font-weight:500;color:#a7b4cc;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:8px;text-decoration:none;transition:background .12s,color .12s}.hdr-navrow .hdr-nav-link i{font-size:12px;opacity:.85}.hdr-navrow .hdr-nav-link:hover{background:rgba(255,255,255,.1);color:#fff}.hdr-navrow .hdr-nav-link--active{background:rgba(255,255,255,.14);color:#fff}.hdr-navrow .hdr-dropdown[open]>.hdr-dropdown-toggle{background:rgba(255,255,255,.12);color:#fff}.hdr-build{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-family:var(--cc-font-mono);font-size:11.5px;font-weight:600;letter-spacing:.06em;color:#64748b;text-decoration:none}.hdr-build:hover{color:#94a3b8}.hdr-build i{font-size:10px}