@keyframes scaleButton-6f91343b{0%{transform:scale(1)}to{transform:scale(1.15)}}img[data-v-6f91343b]{vertical-align:bottom}.grade-content[data-v-6f91343b]{width:100%;height:auto}.grade-content .text-content[data-v-6f91343b]{margin-top:6.4vw;display:flex;align-items:center;justify-content:center;gap:2.667vw}.grade-content .text[data-v-6f91343b]{text-align:center;font-size:4.8vw;font-weight:600;color:#000}.textbook-select-card[data-v-6f91343b]{padding:4.267vw 6.4vw 6.4vw 6.4vw;background:#fff}.textbook-select-card .textbook-select-title[data-v-6f91343b]{color:#333846;font-size:4.267vw;font-weight:600;line-height:5.867vw}.textbook-select-card .required[data-v-6f91343b]{color:#ff2e0b;margin-right:.533vw}.textbook-select-card .textbook-select-field[data-v-6f91343b]{height:10.667vw;margin-top:4.8vw;padding:0 5.333vw;border-radius:2.667vw;background:#f5f5f5;color:#ff4800;display:flex;align-items:center;justify-content:space-between;font-size:4.267vw;font-weight:400}.textbook-select-card .textbook-select-arrow[data-v-6f91343b]{width:2.667vw;height:2.667vw;border-top:.533vw solid #5f6673;border-right:.533vw solid #5f6673;transform:rotate(45deg)}.gradeBtns[data-v-6f91343b]{margin:5.333vw 0;padding:0 4.267vw;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:3.2vw}.gradeBtns .gradeBtn[data-v-6f91343b]{width:100%;height:10.667vw;border-radius:13.6vw;color:#ff2e0b;background:#ffecec;border:1px solid #ff2e0b;text-align:center;font-size:3.733vw;line-height:100%;padding:0}.gradeBtns .gradeBtn.selected[data-v-6f91343b]{background:#fc2222;color:#fff}.gradeBtns .gradeBtn.disabled[data-v-6f91343b]{border:1px solid #999;background:#fff;color:#999}.footer[data-v-6f91343b]{position:fixed;bottom:0;display:block;width:100%;font-size:0}.footer .footer-img[data-v-6f91343b]{width:100%;height:100%}.footer .scrollToTopBtn[data-v-6f91343b]{display:inline-block;position:absolute;top:0;bottom:0;margin:auto;right:4.267vw;width:29.867vw;height:10.667vw;color:#e52425;text-align:center;background:transparent;font-size:3.733vw;font-weight:500;line-height:10.667vw;animation:breathe 2s infinite}[data-v-6f91343b] .action-sheet-content .van-action-sheet__content{background-color:#fff;overflow:hidden}.actionSheetContent[data-v-6f91343b]{display:flex;flex-direction:column}.actionSheetContent .text[data-v-6f91343b]{margin-top:3.2vw;text-align:center;color:#ff2e0b;font-size:3.2vw}.textbookSheetContent[data-v-6f91343b]{position:relative;max-height:75vh;padding:6.667vw 4.267vw 0;overflow:hidden}.textbookSheetContent .sheet-close[data-v-6f91343b]{position:absolute;top:4.267vw;right:3.2vw;width:5.333vw;height:5.333vw;border:0;background:transparent;color:#9aa0aa;font-size:6.933vw;font-weight:300;line-height:5.333vw;padding:0}.textbookSheetContent .sheet-title[data-v-6f91343b]{display:flex;flex-shrink:0;align-items:center;justify-content:center;gap:2.133vw;color:#000;font-size:4.8vw;font-weight:500;line-height:4.8vw}.textbookSheetContent .sheet-scroll-content[data-v-6f91343b]{flex:1;min-height:0;margin-top:7.467vw;overflow-y:auto;-webkit-overflow-scrolling:touch}.textbookSheetContent .sheet-section-title[data-v-6f91343b]{margin:0 0 4.267vw;color:#000;font-size:4.267vw;font-weight:500;line-height:4.267vw}.textbookSheetContent .sheet-gradeBtns[data-v-6f91343b]{margin:0 0 7.733vw;padding:0;gap:4.267vw}.textbookSheetContent .sheet-gradeBtns .gradeBtn[data-v-6f91343b]{height:10.667vw;border:1px solid transparent;background:#f7f7f7;color:#373d48;font-size:3.733vw;font-weight:500;line-height:3.733vw}.textbookSheetContent .sheet-gradeBtns .gradeBtn.selected[data-v-6f91343b]{border-color:#ff4511;background:#fef3eb;color:#ff4511}.textbookSheetContent .sheet-gradeBtns .gradeBtn.disabled[data-v-6f91343b]{border-color:#ddd;background:#f8f8f8;color:#999}.textbookSheetContent .textbook-version-btns[data-v-6f91343b]{display:flex;flex-wrap:wrap;justify-content:flex-start;column-gap:2.133vw;row-gap:3.2vw;padding:0;margin-bottom:5.867vw}.textbookSheetContent .textbook-version-btn[data-v-6f91343b]{flex:0 0 calc(33.33333% - 1.42233vw);min-width:0;height:10.667vw;border:1px solid transparent;border-radius:13.6vw;background:#f7f7f7;color:#373d48;font-size:3.733vw;font-weight:500;line-height:3.733vw;padding:0 2.133vw}.textbookSheetContent .textbook-version-btn.selected[data-v-6f91343b]{border-color:#ff4511;background:#fef3eb;color:#ff4511}.textbookSheetContent .sheet-submit-bar[data-v-6f91343b]{flex-shrink:0;z-index:1;margin:0 -4.267vw;padding:0 4.267vw 5.867vw;background:#fff}.textbookSheetContent .sheet-submit-divider[data-v-6f91343b]{height:1px;margin:0 -4.267vw 4.267vw;background:#f2f3f5}.textbookSheetContent .sheet-submit-btn[data-v-6f91343b]{width:calc(100% - 3.2vw);margin:0 1.6vw;border:0;background:transparent;padding:0}.textbookSheetContent .sheet-submit-btn[data-v-6f91343b]:disabled{cursor:not-allowed}.textbookSheetContent .sheet-submit-btn img[data-v-6f91343b]{display:block;width:100%;height:auto}.img-content[data-v-6f91343b]{width:100%;height:100%}.bg-img-content[data-v-6f91343b]{padding-bottom:21.333vw}.bg-img[data-v-6f91343b]{width:100%;height:100%}.bottom-button[data-v-6f91343b]{position:absolute;bottom:3.467vw;width:35.2vw;height:10.667vw;right:4.267vw;animation:scaleButton-6f91343b .5s ease-in infinite alternate}.bottom-button img[data-v-6f91343b]{width:100%;height:100%}