.single-choice-advanced[data-v-c4736f53]{box-sizing:border-box;flex-direction:column;flex:1;width:100%;height:100%;min-height:0;padding:2rem;display:flex}.single-choice-advanced__header[data-v-c4736f53]{flex-shrink:0;justify-content:flex-start;align-items:flex-start;display:flex}.single-choice-advanced__card[data-v-c4736f53]{border-radius:var(--radius-md);flex:1;grid-template-columns:minmax(0,1fr);gap:2.4rem;min-height:0;margin-top:1.8rem;padding:2.4rem;display:grid}.single-choice-advanced__card--with-image[data-v-c4736f53]{-moz-column-gap:16rem;grid-template-columns:auto auto;justify-content:center;align-items:center;column-gap:16rem}.single-choice-advanced__image-col[data-v-c4736f53]{flex-direction:column;align-items:center;gap:1.6rem;display:flex;position:relative}.single-choice-advanced__image-wrap[data-v-c4736f53]{border:.2rem solid #fff;border-radius:50%;flex-shrink:0;width:20rem;height:20rem;position:relative}.single-choice-advanced__card--with-image .single-choice-advanced__image-col[data-v-c4736f53]:after{content:"";background:#ffffff4d;width:1px;height:80%;position:absolute;top:50%;right:-8rem;transform:translateY(-50%)}.single-choice-advanced__image-caption[data-v-c4736f53]{text-align:center;color:var(--on-dark);flex-direction:column;align-items:center;gap:.4rem;margin:0;display:flex}.single-choice-advanced__image-caption-glyphs[data-v-c4736f53]{flex-wrap:wrap;justify-content:center;align-items:flex-end;gap:.2rem;display:flex}.single-choice-advanced__image-caption-char-pair[data-v-c4736f53]{flex-direction:column;align-items:center;gap:.2rem;display:inline-flex}.single-choice-advanced__image-caption-zh[data-v-c4736f53]{font-size:2.8rem;font-weight:500;line-height:1.2}.single-choice-advanced__image-caption-pinyin[data-v-c4736f53]{color:#ffffffb8;font-size:1.6rem;font-weight:400;line-height:1.2}.single-choice-advanced__card--with-image .single-choice-advanced__prompt[data-v-c4736f53]{width:100%;color:var(--on-dark);text-align:center;margin:0 0 2rem;font-size:2.4rem;font-weight:300;line-height:1.4}.single-choice-advanced__image[data-v-c4736f53]{-o-object-fit:cover;object-fit:cover;border-radius:50%;width:100%;height:100%;display:block}.single-choice-advanced__content[data-v-c4736f53]{flex-direction:column;flex:1;align-items:center;min-height:0;display:flex}.single-choice-advanced__card--subjects[data-v-c4736f53]{flex-direction:column;justify-content:center;align-items:center;margin-top:0;padding-top:10rem;padding-bottom:2.4rem;display:flex}.single-choice-advanced--subjects .single-choice-advanced__content[data-v-c4736f53]{flex:0 auto;justify-content:flex-start;align-items:center;gap:0;width:100%}.single-choice-advanced__prompt[data-v-c4736f53]{width:100%;color:var(--on-dark);text-align:center;margin:0 0 2rem;font-size:2rem;font-weight:300;line-height:1.4}.single-choice-advanced--subjects .single-choice-advanced__prompt[data-v-c4736f53]{margin:0 0 5.6rem;font-size:3rem;font-weight:300}.single-choice-advanced--subjects .single-choice-advanced__subjects[data-v-c4736f53]{margin-bottom:4rem}.single-choice-advanced__subjects[data-v-c4736f53]{grid-template-columns:1fr auto 1fr;align-items:start;gap:1.2rem;width:100%;margin:0;padding:0;list-style:none;display:grid}.single-choice-advanced__subject[data-v-c4736f53]{flex-direction:column;align-items:center;gap:1.2rem;display:flex}.single-choice-advanced__subject--focus[data-v-c4736f53]{grid-column:2;justify-self:center}.single-choice-advanced__subject[data-v-c4736f53]:not(.single-choice-advanced__subject--focus){grid-column:3;justify-self:start;margin-left:10rem;margin-right:0}.single-choice-advanced__subject-avatar[data-v-c4736f53]{-o-object-fit:cover;object-fit:cover;background:#ffffff14;border:2px solid #fff;border-radius:50%;width:12.5rem;height:12.5rem;transition:border-color .2s,filter .2s;display:block}.single-choice-advanced__subject--focus .single-choice-advanced__subject-avatar[data-v-c4736f53]{filter:drop-shadow(0 4px 20px #72ff844d);border:3px solid #72ff84;width:12.5rem;height:12.5rem}.single-choice-advanced__subject-name[data-v-c4736f53]{color:var(--on-dark);font-size:2.5rem;font-weight:500;line-height:1.2}.single-choice-advanced__subject--focus .single-choice-advanced__subject-name[data-v-c4736f53]{color:#72ff84;font-size:2.5rem}.single-choice-advanced__subject:not(.single-choice-advanced__subject--focus) .single-choice-advanced__subject-avatar[data-v-c4736f53]{width:8.75rem;height:8.75rem}.single-choice-advanced__subject:not(.single-choice-advanced__subject--focus) .single-choice-advanced__subject-name[data-v-c4736f53]{font-size:1.875rem}.single-choice-advanced__helper[data-v-c4736f53]{color:#ffffffad;align-items:center;gap:.8rem;margin:0 0 1.6rem;font-size:2.6rem;font-weight:500;line-height:1.5;display:flex}.single-choice-advanced__helper-icon[data-v-c4736f53]{flex-shrink:0;width:2.4rem;height:2.4rem}.single-choice-advanced__options[data-v-c4736f53]{flex-direction:column;gap:1.4rem;max-width:100%;display:inline-flex}.single-choice-advanced--subjects .single-choice-advanced__options[data-v-c4736f53]{box-sizing:border-box;width:calc(100% - 28rem);max-width:100%;margin-left:auto;margin-right:auto;display:flex}.single-choice-advanced__options--row[data-v-c4736f53]{box-sizing:border-box;border-top:1px solid #ffffff4d;flex-flow:wrap;justify-content:center;align-items:center;gap:4rem 10rem;width:100%;padding-top:3.2rem}.single-choice-advanced__options--row .single-choice-advanced__option[data-v-c4736f53]{width:32rem;min-width:32rem;min-height:6rem;padding:.8rem 2.4rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__card--subjects[data-v-c4736f53]{padding-top:1.33rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__prompt[data-v-c4736f53]{font-size:3.2rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__subject--focus[data-v-c4736f53]{gap:3.73rem;width:26.67rem;min-height:35.73rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__subject--focus .single-choice-advanced__subject-avatar[data-v-c4736f53]{width:26.67rem;height:26.67rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__subject--focus .single-choice-advanced__subject-name[data-v-c4736f53]{font-size:5.33rem;line-height:1}.single-choice-advanced-slide--tongxue .single-choice-advanced__subject[data-v-c4736f53]:not(.single-choice-advanced__subject--focus){gap:3.47rem;width:18.67rem;min-height:26.13rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__subject:not(.single-choice-advanced__subject--focus) .single-choice-advanced__subject-avatar[data-v-c4736f53]{width:18.67rem;height:18.67rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__subject:not(.single-choice-advanced__subject--focus) .single-choice-advanced__subject-name[data-v-c4736f53]{font-size:4rem;line-height:1}.single-choice-advanced-slide--tongxue .single-choice-advanced__options--row .single-choice-advanced__option[data-v-c4736f53]{width:36.53rem;min-width:36.53rem;height:12.27rem;min-height:12.27rem;padding:1.07rem 3.2rem}.single-choice-advanced-slide--tongxue .single-choice-advanced__options--row .single-choice-advanced__audio[data-v-c4736f53]{flex-shrink:0}.single-choice-advanced__options--row .single-choice-advanced__option-row[data-v-c4736f53]{gap:1.2rem;width:auto}.single-choice-advanced__options--row .single-choice-advanced__audio[data-v-c4736f53]{position:static;transform:none}.single-choice-advanced__options--row .single-choice-advanced__option-zh[data-v-c4736f53]{font-size:5.2rem;line-height:1.1}.single-choice-advanced__options--row .single-choice-advanced__option--pinyin[data-v-c4736f53]{color:var(--on-dark);font-size:2.2rem;font-weight:500;line-height:1.2}.single-choice-advanced__options--row .single-choice-advanced__option:disabled .single-choice-advanced__option--pinyin[data-v-c4736f53]{color:#ffffff80}.single-choice-advanced__option-row[data-v-c4736f53]{align-items:center;width:100%;display:flex;position:relative}.single-choice-advanced__option[data-v-c4736f53]{color:inherit;cursor:pointer;border:0}.single-choice-advanced__option[data-v-c4736f53]:disabled{cursor:default}.single-choice-advanced__option[data-v-c4736f53]{-webkit-backdrop-filter:blur(34.4px);backdrop-filter:blur(34.4px);text-align:center;background:#ffffff1a;border:.5px solid #ffffff80;border-radius:12px;flex:1;justify-content:center;align-items:center;min-width:47rem;min-height:8.8rem;padding:2rem 2.4rem;transition:background .16s;display:flex;position:relative;box-shadow:0 4px 12.3px #00000040,0 25.188px 50.375px -12.594px #0000004d}.single-choice-advanced__option[data-v-c4736f53]:hover:not(:disabled){background:#ffffff4d}.single-choice-advanced__option[data-v-c4736f53]:disabled{cursor:not-allowed;color:#ffffff80;background:#ffffff0d;border-color:#ffffff4d}.single-choice-advanced__option--selected[data-v-c4736f53]{box-shadow:0 0 0 1px #ffffff2e,var(--shadow-md),var(--glass-inset-sm)}.single-choice-advanced__option.courseware-feedback--correct[data-v-c4736f53],.single-choice-advanced__option.courseware-feedback--wrong[data-v-c4736f53]{box-shadow:var(--shadow-md),var(--glass-inset-sm),0 0 0 .2rem #00a92159}.single-choice-advanced__option.courseware-feedback--wrong[data-v-c4736f53]{box-shadow:var(--shadow-md),var(--glass-inset-sm),0 0 0 .2rem #e5484d59}.single-choice-advanced__option-copy[data-v-c4736f53]{flex-direction:row;gap:1.6rem;display:flex}.single-choice-advanced__option-char-pair[data-v-c4736f53]{flex-direction:column;align-items:center;gap:.6rem;display:flex}.single-choice-advanced__option-zh[data-v-c4736f53]{font-size:4rem;font-weight:500;line-height:1.2}.single-choice-advanced__option--pinyin[data-v-c4736f53]{font-size:2.2rem;font-weight:400;line-height:1.4}.single-choice-advanced__tooltip[data-v-c4736f53]{min-width:16rem;box-shadow:var(--shadow-md);color:#000;z-index:1;background:#fff;border-radius:1.6rem;align-items:center;gap:1.2rem;padding:1.2rem 1.6rem;display:inline-flex;position:absolute;bottom:calc(100% + 2rem);left:100%;overflow:visible;transform:translate(-50%)}.single-choice-advanced__tooltip-tail[data-v-c4736f53]{width:1.25rem;height:.965rem;position:absolute;bottom:0;left:0;transform:translate(-30%)}.single-choice-advanced__tooltip-copy[data-v-c4736f53]{z-index:1;flex-direction:row;gap:1.2rem;display:flex;position:relative}.single-choice-advanced__tooltip-char-pair[data-v-c4736f53]{align-items:left;flex-direction:column;gap:.4rem;display:flex}.single-choice-advanced__tooltip-zh[data-v-c4736f53]{color:#000;font-size:2.6rem;font-weight:700;line-height:1.1}.single-choice-advanced__tooltip--pinyin[data-v-c4736f53]{color:#000000b3;font-size:1.6rem;font-weight:500;line-height:1.2}.single-choice-advanced__tooltip-audio-btn[data-v-c4736f53]{z-index:1;cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;width:2rem;height:2rem;padding:0;display:inline-flex;position:relative}.single-choice-advanced__tooltip-audio-icon[data-v-c4736f53]{width:2rem;height:2rem}.single-choice-advanced__audio[data-v-c4736f53]{position:absolute;top:50%;right:-6rem;transform:translateY(-50%)}