.tool-header{text-align:center;margin-bottom:2rem;padding:2rem 1rem;width:100%;max-width:900px;position:relative}.back-link{position:absolute;left:1rem;top:2rem;text-decoration:none;color:var(--text-secondary);font-size:.9rem;font-weight:500;transition:color .2s}.back-link:hover{color:var(--accent-color);text-decoration:none}.main-logo{height:60px;width:auto;margin-bottom:.5rem;display:inline-block}.tool-name{font-size:1.25rem;font-weight:700;color:var(--accent-color);margin-bottom:.5rem}.subtitle{color:var(--text-secondary);margin:0}.tool-main{width:100%;max-width:900px;padding:0 1rem}.adsense-container{width:100%;max-width:900px;min-width:300px;margin:2rem auto;padding:0 1rem;min-height:100px;box-sizing:border-box}.adsbygoogle{min-height:100px;min-width:280px}.adsbygoogle:empty{display:none!important}@media(max-width:600px){.back-link{position:static;display:block;margin-bottom:1rem}}