body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app-container[data-v-34e34d1b]{display:flex;flex-direction:column;min-height:100vh;background-color:#f9f9f9;color:#333}.app-header[data-v-34e34d1b]{background-color:#fff;padding:1rem 2rem;border-bottom:1px solid #ddd;display:flex;justify-content:space-between;align-items:center}.app-header h1[data-v-34e34d1b]{margin:0;font-size:1.5rem}.logo[data-v-34e34d1b]{width:250px;height:auto}.app-main[data-v-34e34d1b]{flex:1;padding:2rem}.app-footer[data-v-34e34d1b]{background-color:#fff;padding:1rem 2rem;border-top:1px solid #ddd;text-align:center;font-size:.9rem}.app-footer a[data-v-34e34d1b]{color:#555;text-decoration:none;margin:0 1rem}.app-footer a[data-v-34e34d1b]:hover{text-decoration:underline}.home[data-v-72a0b127]{max-width:960px;margin:0 auto}.grade-selection[data-v-72a0b127]{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center}.grade-btn[data-v-72a0b127]{padding:1rem 2rem;font-size:1.2rem;border-radius:50px;border:1px solid #ddd;background-color:#fff;cursor:pointer;transition:all .2s}.grade-btn[data-v-72a0b127]:hover{background-color:#f0f0f0;transform:translateY(-2px);box-shadow:0 4px 8px #0000001a}.back-btn[data-v-72a0b127]{margin-bottom:1rem;background:none;border:none;color:#007bff;cursor:pointer;font-size:1rem}.book-selection[data-v-72a0b127]{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1.5rem}.book-block[data-v-72a0b127]{border:1px solid #ddd;border-radius:8px;overflow:hidden;text-align:center;cursor:pointer;transition:all .2s}.book-block[data-v-72a0b127]:hover{transform:translateY(-5px);box-shadow:0 8px 16px #0000001a}.book-block img[data-v-72a0b127]{width:100%;height:250px;object-fit:cover;background-color:#eee}.book-block p[data-v-72a0b127]{margin:0;padding:1rem;font-weight:600}.chapter-selection ul[data-v-72a0b127]{list-style-type:none;padding:0}.chapter-selection li[data-v-72a0b127]{background-color:#fff;padding:1rem;border:1px solid #ddd;margin-bottom:.5rem;border-radius:4px}.chapter-selection li[data-v-72a0b127]:hover{background-color:#f0f0f0}.chapter-selection a[data-v-72a0b127]{text-decoration:none;color:inherit;display:block}