._courseware_1xqzl_1{--red:#c9363e;--jade:#176456;--ink:#251f1c;--gold:#f3bf68;max-width:1560px;color:var(--ink);background:radial-gradient(circle at 8% 4%,#f3bf6833,#0000 22%),radial-gradient(circle at 94% 18%,#45a89121,#0000 22%),#fff;margin:0 auto;padding:38px 5vw 100px}._bookSwitch_1xqzl_2{grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px;display:grid}._bookSwitch_1xqzl_2 button{text-align:left;color:var(--ink);cursor:pointer;background:#fff;border:1px solid #e8ded2;border-radius:22px;gap:5px;padding:20px;transition:all .2s;display:grid;box-shadow:0 12px 30px #362a200f}._bookSwitch_1xqzl_2 button:hover{border-color:#eab86a;transform:translateY(-2px)}._bookSwitch_1xqzl_2 button._active_1xqzl_4{background:linear-gradient(135deg,var(--jade),#258775);color:#fff;border-color:#0000;box-shadow:0 18px 38px #17645633}._bookSwitch_1xqzl_2 small{letter-spacing:.12em;font-weight:800}._bookSwitch_1xqzl_2 strong{font:700 25px/1.1 Georgia,serif}._bookSwitch_1xqzl_2 span{opacity:.75;font-size:13px}._workspace_1xqzl_6{grid-template-columns:310px minmax(0,1fr);align-items:start;gap:24px;display:grid}._lessonIndex_1xqzl_7{background:#fff;border:1px solid #e9dfd4;border-radius:26px;position:sticky;top:18px;overflow:hidden;box-shadow:0 18px 45px #32261e14}._lessonIndex_1xqzl_7 header{background:linear-gradient(135deg,#fff3df,#fff);gap:4px;padding:24px;display:grid}._lessonIndex_1xqzl_7 header small{color:var(--red);letter-spacing:.12em;font-weight:900}._lessonIndex_1xqzl_7 header strong{font:700 29px/1.1 Georgia,serif}._lessonIndex_1xqzl_7 header span{color:#756d66;font-size:13px}._lessonIndex_1xqzl_7 nav{gap:2px;padding:8px;display:grid}._lessonIndex_1xqzl_7 nav button{text-align:left;width:100%;color:var(--ink);cursor:pointer;background:0 0;border:0;border-radius:16px;grid-template-columns:42px 1fr;align-items:center;gap:12px;padding:13px 12px;display:grid}._lessonIndex_1xqzl_7 nav button>span{color:#9e6214;background:#fff1d7;border-radius:50%;place-items:center;width:36px;height:36px;font-weight:900;display:grid}._lessonIndex_1xqzl_7 nav button div{gap:3px;min-width:0;display:grid}._lessonIndex_1xqzl_7 nav button strong{white-space:nowrap;text-overflow:ellipsis;font-size:15px;overflow:hidden}._lessonIndex_1xqzl_7 nav button small{color:#827971;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}._lessonIndex_1xqzl_7 nav button._active_1xqzl_4{background:#eef8f5}._lessonIndex_1xqzl_7 nav button._active_1xqzl_4>span{background:var(--jade);color:#fff}._lessonIndex_1xqzl_7 nav button:hover{background:#faf5ee}._lessonPaper_1xqzl_11{background:#fff;border:1px solid #e9dfd4;border-radius:30px;min-width:0;overflow:hidden;box-shadow:0 24px 70px #2d231b14}._lessonHero_1xqzl_12{background:linear-gradient(135deg,#f8ead0 0%,#fff 48%,#eaf7f4 100%);border-bottom:1px solid #e9dfd4;justify-content:space-between;align-items:flex-end;gap:20px;padding:52px 6%;display:flex}._lessonHero_1xqzl_12>div{gap:8px;display:grid}._lessonHero_1xqzl_12 p{color:var(--red);letter-spacing:.14em;margin:0;font-weight:900}._lessonHero_1xqzl_12 h1{color:var(--ink);margin:0;font:700 clamp(48px,6vw,92px)/1.02 Georgia,Songti SC,serif}._lessonHero_1xqzl_12 em{color:var(--jade);font:italic 21px/1.4 Georgia,serif}._lessonHero_1xqzl_12 strong{font-size:19px}._lessonHero_1xqzl_12 span{color:#765d43;background:#fff;border:1px solid #eadac5;border-radius:999px;width:max-content;padding:8px 12px}._lessonHero_1xqzl_12 button,._verifiedLink_1xqzl_12{background:var(--red);color:#fff;cursor:pointer;white-space:nowrap;border:0;border-radius:999px;padding:14px 20px;font-weight:900;text-decoration:none;box-shadow:0 12px 28px #c9363e38}._section_1xqzl_13{border-bottom:1px solid #ede4da;padding:54px 6%}._sectionTitle_1xqzl_13{grid-template-columns:58px 1fr;align-items:start;gap:16px;margin-bottom:28px;display:grid}._sectionTitle_1xqzl_13>span{color:#ad711c;background:#fff1d7;border-radius:18px;place-items:center;width:52px;height:52px;font:700 20px Georgia,serif;display:grid}._sectionTitle_1xqzl_13 small{letter-spacing:.12em;color:var(--red);font-weight:900}._sectionTitle_1xqzl_13 h2{margin:5px 0 0;font:700 clamp(28px,3.3vw,48px)/1.1 Georgia,serif}._words_1xqzl_14{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}._words_1xqzl_14 article{background:#fff;border:1px solid #eadfd3;border-radius:20px;grid-template-columns:44px 1fr auto;align-items:center;gap:14px;padding:18px;display:grid}._words_1xqzl_14 article>span{font-size:28px}._words_1xqzl_14 article div{gap:2px;display:grid}._words_1xqzl_14 strong{font:700 26px/1.1 Songti SC,Georgia,serif}._words_1xqzl_14 em{color:var(--jade)}._words_1xqzl_14 p{color:#706962;margin:0}._words_1xqzl_14 button,._dialogue_1xqzl_14 article button{color:var(--jade);cursor:pointer;background:#eff8f5;border:0;border-radius:999px;padding:10px 13px;font-weight:800}._dialogue_1xqzl_14{background:#fffaf3}._dialogue_1xqzl_14>div:last-child{gap:14px;display:grid}._dialogue_1xqzl_14 article{background:#fff;border:1px solid #ebdfd2;border-radius:22px;grid-template-columns:48px 1fr auto;align-items:center;gap:16px;padding:20px;display:grid}._dialogue_1xqzl_14 article>span{background:var(--jade);color:#fff;border-radius:50%;place-items:center;width:42px;height:42px;font-weight:900;display:grid}._dialogue_1xqzl_14 article div{gap:5px;display:grid}._dialogue_1xqzl_14 strong{font:700 25px/1.2 Songti SC,Georgia,serif}._dialogue_1xqzl_14 em{color:var(--jade)}._dialogue_1xqzl_14 p{color:#6f6761;margin:0}._audioSection_1xqzl_16{background:#f4faf8}._audioList_1xqzl_16{gap:12px;display:grid}._audioList_1xqzl_16 article{background:#fff;border:1px solid #dcebe6;border-radius:18px;grid-template-columns:46px 190px minmax(220px,1fr);align-items:center;gap:16px;padding:16px 18px;display:grid}._audioList_1xqzl_16 article>span{background:var(--jade);color:#fff;border-radius:12px;place-items:center;width:40px;height:40px;font-weight:900;display:grid}._audioList_1xqzl_16 article div{gap:4px;display:grid}._audioList_1xqzl_16 small{color:#777}._audioList_1xqzl_16 audio{width:100%}._safetyNote_1xqzl_16{border-left:4px solid var(--gold);color:#5e5145;background:#fff8e9;border-radius:0 14px 14px 0;margin:18px 0 0;padding:16px 18px;line-height:1.55}._verifiedLink_1xqzl_12{align-items:center;gap:18px;margin-top:16px;display:inline-flex}._bookPages_1xqzl_17{background:#fff}._pagesIntro_1xqzl_17{color:#6e665f;max-width:860px;margin:-4px 0 28px;line-height:1.7}._pageGrid_1xqzl_17{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:20px;display:grid}._pageGrid_1xqzl_17 figure{background:#f8f4ee;border:1px solid #e6dbcf;border-radius:20px;margin:0;overflow:hidden;box-shadow:0 12px 28px #31261e12}._pageGrid_1xqzl_17 img{background:#fff;width:100%;height:auto;display:block}._pageGrid_1xqzl_17 figcaption{text-align:right;color:#777;padding:10px 14px;font-size:12px;font-weight:800}._loading_1xqzl_17{color:#756c65;background:#f7f2ec;border-radius:18px;padding:30px}._lessonNav_1xqzl_18{color:#fff;background:#2a2420;justify-content:space-between;align-items:center;gap:18px;padding:22px 6%;display:flex}._lessonNav_1xqzl_18 button{color:#fff;cursor:pointer;background:0 0;border:1px solid #ffffff47;border-radius:999px;padding:11px 16px;font-weight:800}._lessonNav_1xqzl_18 button:disabled{opacity:.3;cursor:not-allowed}._lessonNav_1xqzl_18 span{color:#f3c272;font-weight:800}@media (width<=980px){._bookSwitch_1xqzl_2{grid-template-columns:repeat(2,1fr)}._workspace_1xqzl_6{grid-template-columns:1fr}._lessonIndex_1xqzl_7{position:static}._lessonIndex_1xqzl_7 nav{grid-template-columns:repeat(2,minmax(0,1fr))}._pageGrid_1xqzl_17{grid-template-columns:1fr}}@media (width<=650px){._courseware_1xqzl_1{padding:20px 12px 70px}._bookSwitch_1xqzl_2{gap:8px}._bookSwitch_1xqzl_2 button{border-radius:16px;padding:14px}._bookSwitch_1xqzl_2 strong{font-size:18px}._lessonIndex_1xqzl_7 nav{grid-template-columns:1fr}._lessonPaper_1xqzl_11{border-radius:22px}._lessonHero_1xqzl_12{flex-direction:column;align-items:flex-start;padding:34px 22px}._lessonHero_1xqzl_12 h1{font-size:47px}._section_1xqzl_13{padding:38px 20px}._sectionTitle_1xqzl_13{grid-template-columns:42px 1fr}._sectionTitle_1xqzl_13>span{border-radius:13px;width:40px;height:40px}._words_1xqzl_14{grid-template-columns:1fr}._dialogue_1xqzl_14 article{grid-template-columns:42px 1fr}._dialogue_1xqzl_14 article button{grid-column:2}._audioList_1xqzl_16 article{grid-template-columns:40px 1fr}._audioList_1xqzl_16 audio{grid-column:1/-1}._lessonNav_1xqzl_18 span{display:none}}