.fat-topbar{position:sticky;top:0;z-index:900;background:#1e2b3c;border-bottom:1px solid rgba(78,205,196,.25)}[data-theme=dark] .fat-topbar{background:#0d1117;border-bottom-color:#4ecdc42e}.fat-topbar-inner{max-width:1280px;margin:0 auto;height:58px;padding:0 20px;display:flex;align-items:center;justify-content:space-between}.fat-brand{display:flex;align-items:center;gap:10px}.fat-brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,#4ecdc4,#2196f3);color:#fff;font-weight:700;font-size:13px;letter-spacing:.04em;font-family:Inter,sans-serif}.fat-brand-text{color:#fff;font-size:17px;font-weight:400;font-family:Inter,sans-serif;letter-spacing:.01em}.fat-brand-text strong{color:#4ecdc4;font-weight:700}.fat-topbar-right{display:flex;align-items:center;gap:14px}.fat-user{color:#ffffffd9;font-size:14px;font-family:Inter,sans-serif;display:inline-flex;align-items:center;gap:7px}.fat-logout{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:8px;border:1px solid rgba(255,255,255,.18);background:transparent;color:#ffffffe6;font-size:13px;font-weight:500;font-family:Inter,sans-serif;cursor:pointer;transition:background .15s,border-color .15s}.fat-logout:hover{background:#c6282838;border-color:#c6282880}.fat-main{min-height:calc(100vh - 58px);padding:22px 0 40px}@media(max-width:600px){.fat-user span,.fat-logout span{display:none}.fat-topbar-inner{padding:0 14px}}