.cards.lesson-slider{align-items:flex-start;overflow-y:hidden}
.lesson-slider .lesson-card{align-self:flex-start}
.lesson-slider .slide-art{padding:0;background:#183c35;align-items:stretch;min-height:460px;position:relative}
.illustrated-cover{position:absolute;inset:0;display:block;min-height:0;height:100%;overflow:hidden;isolation:isolate}
.illustrated-cover img{position:absolute;inset:0;width:100%;height:100%;max-height:none;max-width:none;border-radius:0;object-fit:cover;object-position:50% 24%;box-shadow:none;aspect-ratio:auto;transition:transform .35s ease}
.illustrated-cover:hover img{transform:scale(1.025)}
.illustrated-cover.has-custom-cover img{object-position:center}
.lesson-cover.has-custom-cover>img{object-position:50% 40%}
.cover-shade{position:absolute;inset:0;background:linear-gradient(180deg,#061b1810 45%,#061b18db);z-index:1}
.cover-caption{position:absolute;bottom:28px;left:30px;z-index:2;color:#fff;display:flex;align-items:end;gap:16px}
.cover-card-number{font:800 72px/1 Manrope,sans-serif;letter-spacing:-4px;text-shadow:0 2px 12px #0004}
.cover-chapter{font-size:12px;font-weight:600;padding-bottom:7px;letter-spacing:1px}
.cover-open{position:absolute;right:22px;top:22px;color:#fff;background:#123b32d9;border:1px solid #ffffff40;padding:9px 14px;border-radius:30px;font-size:12px;z-index:2}
.lesson-cover{position:relative;isolation:isolate;overflow:hidden;border-radius:22px;min-height:330px;background:#12362f;margin-bottom:0;color:white}
.lesson-cover>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 25%;z-index:-2}
.lesson-cover-shade{position:absolute;inset:0;background:linear-gradient(90deg,#092b28d9,#092b2870 70%),linear-gradient(0deg,#092b28cf,transparent 70%);z-index:-1}
.lesson-cover-title{display:flex;align-items:end;gap:26px;position:absolute;inset:auto 38px 38px}
.lesson-cover-number{font:800 100px/.9 Manrope,sans-serif;letter-spacing:-6px;color:#d7edb4}
.lesson-cover h1{font-size:clamp(30px,4vw,51px);letter-spacing:-1.6px;margin:9px 0 0;line-height:1.14;text-shadow:0 1px 8px #0004}
.lesson-cover-chapter{font-size:12px;letter-spacing:1.8px;text-transform:uppercase;color:#e5edde}
.experience-nav{display:flex;align-items:center;gap:8px;position:sticky;top:0;z-index:5;background:#f7f5eef5;backdrop-filter:blur(12px);padding:17px 0;border-bottom:1px solid #d9e2d3;margin-bottom:44px;overflow:auto}
.experience-nav a{font-weight:600;font-size:14px;white-space:nowrap;padding:11px 18px;border-radius:9px;color:#36594b}
.experience-nav a:hover,.experience-nav a:focus-visible{background:#e5eedc;color:#153d2d}
.experience-section{scroll-margin-top:93px;margin-bottom:58px}
.experience-section-heading{display:flex;gap:18px;align-items:center;margin-bottom:26px}
.section-number{height:44px;width:44px;background:#e8edde;border-radius:12px;display:grid;place-items:center;color:#426746;font:600 14px Manrope;flex-shrink:0}
.experience-section-heading h2{font-size:28px;letter-spacing:-.8px;margin:0 0 5px}
.experience-section-heading p{color:#5d7266;font-size:14px;margin:0}
.lesson-experience .reader{grid-template-columns:minmax(0,1fr) 310px}
.lesson-experience .comic{padding:10px;background:#e5e9df}
.lesson-experience .aside{top:86px;padding:25px}
.lesson-experience .aside h3{font-size:19px}
/* Reading stage: the page is the focal point; vocabulary is a deliberate companion. */
.lesson-experience .reader-stage{gap:24px;align-items:start}
.comic-stage{padding:0;overflow:hidden;border:1px solid #cbd8c8;border-radius:18px;background:#173b33;box-shadow:0 2px 3px #14312610,0 22px 48px #1431261c}
.comic-stage-bar{min-height:48px;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:10px 18px;background:linear-gradient(90deg,#11352e,#19483c);color:#d8e6d3;font-size:12px;letter-spacing:.15px}
.comic-page-label{font:700 11px Manrope,sans-serif;letter-spacing:1.3px;text-transform:uppercase;color:#e6f4c9}
.comic-art-link{position:relative;display:block;padding:10px;background:#e9ede4;line-height:0}
.comic-art-link img{box-shadow:0 12px 24px #122a241f;border-radius:4px;transition:transform .24s ease,filter .24s ease}
.comic-art-link:hover img{filter:saturate(1.04);transform:scale(1.006)}
.comic-expand{position:absolute;right:26px;bottom:25px;padding:9px 12px;border:1px solid #ffffff73;border-radius:999px;background:#11362cdd;color:#fff;line-height:1.2;font-size:12px;font-weight:700;letter-spacing:.15px;opacity:0;transform:translateY(5px);transition:opacity .2s ease,transform .2s ease}
.comic-art-link:hover .comic-expand,.comic-art-link:focus-visible .comic-expand{opacity:1;transform:translateY(0)}
.vocabulary-rail{border-radius:18px;padding:0;overflow:hidden;box-shadow:0 2px 3px #14312608,0 16px 32px #1431260d}
.rail-heading{padding:23px 23px 18px;background:linear-gradient(145deg,#f3f7e9,#e4efda);border-bottom:1px solid #d8e3d1}
.rail-kicker{display:block;color:#416b52;font:700 10px Manrope,sans-serif;letter-spacing:1.2px;text-transform:uppercase;margin-bottom:6px}
.rail-heading h3{margin:0;font-size:22px;letter-spacing:-.7px}.rail-heading p{margin:7px 0 0;color:#526d5c;font-size:13px;line-height:1.55}
.rail-words{padding:5px 23px 4px}.vocabulary-rail .word{padding:17px 0}.vocabulary-rail .word .han{font-size:clamp(31px,3vw,39px);line-height:1.2}.vocabulary-rail .py{font-size:15px;font-weight:700;margin-top:5px;display:block}.vocabulary-rail .meaning{font-size:13px;margin-top:2px}
.lesson-experience .vocabulary-rail{padding:0}.lesson-experience .comic-stage{padding:0}.vocabulary-rail .word-sound .word-listen-label{display:inline-flex;gap:6px;align-items:center;width:auto;height:auto;min-height:36px;padding:6px 9px;border-radius:8px;font:700 11px Manrope,sans-serif;color:#225e45;background:#e5efdf;white-space:nowrap}.aside .word-sound .word-listen-label{font-size:11px}.word-sound{min-height:48px}
.vocabulary-rail .word-sound{width:calc(100% + 16px);justify-content:space-between}.vocabulary-rail .word-sound>span:last-child{font-size:18px;width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#e5efdf}.rail-next{width:calc(100% - 46px);margin:18px 23px 23px;justify-content:space-between;min-height:50px;box-shadow:0 3px 0 #104235}
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}
.scene-card{border:1px solid #d8e1d1;border-radius:15px;overflow:hidden;background:#fffef9}
.scene-still{height:205px;position:relative;background:#193b33;overflow:hidden}
.scene-still img{width:100%;height:100%;object-fit:cover;object-position:50% 20%}
.scene-still-1 img{object-position:50% 40%}.scene-still-2 img{object-position:50% 60%}
.scene-state{position:absolute;left:12px;bottom:12px;background:#102f29e6;color:#fff;font-size:11px;padding:6px 11px;border-radius:6px;letter-spacing:.2px}
.scene-description{padding:18px 20px 20px}
.scene-speakers{font-size:11px;color:#426951;font-weight:700;letter-spacing:.7px;text-transform:uppercase}
.scene-description h3{font-size:20px;margin:7px 0 9px}
.scene-description p{font-size:14px;line-height:1.6;color:#526c5c;margin:0}
.scene-card video{margin:0;display:block;aspect-ratio:16/10;background:#16382f}
.production-note{font-size:13px;line-height:1.8;color:#65786b;padding:16px 0;border-bottom:1px solid #dbe3d5}
.dialogue-heading{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin:30px 0 18px}
.dialogue-heading h3{font-size:23px;margin:0}.dialogue-heading p{font-size:13px;color:#63796b;margin:0}
.spoken-lines{display:flex;flex-direction:column;gap:12px}
.spoken-line{display:flex;align-items:start;gap:17px;background:#fffef9;border:1px solid #dce4d5;border-radius:14px;padding:22px 24px}
.speaker-avatar{width:42px;height:42px;background:#e7eede;border:1px solid #d7e0cd;border-radius:50%;display:grid;place-items:center;font:700 16px Manrope;color:#456543;flex-shrink:0}
.spoken-content{min-width:0;flex:1}
.speaker-name{font-size:12px;font-weight:700;color:#3e654d;display:block;margin-bottom:7px}
.spoken-text{display:flex;flex-direction:column;gap:6px;text-align:left;background:none;border:0;padding:0;color:inherit;width:100%}
.spoken-text .han{font-size:clamp(29px,3vw,39px);line-height:1.55;overflow-wrap:anywhere}
.spoken-text .py{font-size:18px;line-height:1.6}.spoken-translation{font-size:15px;color:#526c5b;line-height:1.7}
button.spoken-text:hover .han{color:#26724e}
.line-play{height:45px;width:45px;border-radius:50%;border:1px solid #c4d7bf;background:#e6efdd;color:#245e40;flex-shrink:0}
.line-pending{font-size:10px;color:#718372;white-space:nowrap;padding-top:4px}
.is-speaking{border-color:#317b50;background:#edf5e6}
.writing-drawer{background:#fffef9;border:1px solid #dce4d5;border-radius:14px;padding:22px 25px}
.writing-drawer summary{font-size:16px}.writing-drawer[open] summary{margin-bottom:24px}
.token-meaning{max-width:150px;line-height:1.45}.han-token{max-width:195px}
.rail-example{display:flex;flex-direction:column;gap:4px;padding:9px 10px;background:#eef4e7;border-left:2px solid #759c6e;border-radius:0 7px 7px 0;font-size:12px;line-height:1.6;margin:8px 0}.rail-example>span[lang]{font-family:'Noto Sans CJK SC','Microsoft YaHei',sans-serif;font-size:20px;overflow-wrap:anywhere}.rail-example>span:last-child{color:#497359}
@media(max-width:1000px){.lesson-experience .reader{grid-template-columns:minmax(0,1fr) 250px}.scene-grid{gap:13px}.scene-still{height:170px}.scene-description{padding:15px}.comic-stage-bar{padding-inline:14px}.rail-heading{padding:20px 18px 15px}.rail-words{padding-inline:18px}.rail-next{width:calc(100% - 36px);margin-inline:18px}}
@media(max-width:720px){.lesson-slider .slide-art{min-height:315px;height:315px}.illustrated-cover{height:315px}.illustrated-cover img{height:100%;max-height:none;width:100%;object-fit:cover}.cover-card-number{font-size:61px}.cover-caption{left:22px;bottom:24px}.cover-open{top:16px;right:16px;font-size:11px}.lesson-cover{min-height:260px;border-radius:16px}.lesson-cover-title{inset:auto 22px 26px;gap:17px;align-items:start;flex-direction:column}.lesson-cover-number{font-size:63px;letter-spacing:-3px}.lesson-cover h1{font-size:32px;letter-spacing:-1px}.lesson-cover-chapter{font-size:10px}.experience-nav{padding:12px 0;gap:3px;margin-bottom:30px}.experience-nav a{font-size:12px;padding:10px 12px}.experience-section{scroll-margin-top:80px;margin-bottom:40px}.experience-section-heading{gap:13px;align-items:start}.experience-section-heading h2{font-size:24px}.experience-section-heading p{font-size:13px}.section-number{width:37px;height:37px}.lesson-experience .reader{grid-template-columns:1fr}.lesson-experience .aside{position:static}.comic-stage{border-radius:14px}.comic-stage-bar{min-height:44px;padding:9px 13px;font-size:11px}.comic-stage-bar>span:last-child{display:none}.comic-art-link{padding:5px}.comic-expand{right:15px;bottom:15px;opacity:1;transform:none;font-size:11px}.vocabulary-rail{border-radius:14px}.rail-heading{padding:19px 18px 15px}.rail-heading h3{font-size:20px}.rail-words{padding-inline:18px}.vocabulary-rail .word .han{font-size:34px}.rail-next{width:calc(100% - 36px);margin:16px 18px 19px}.scene-grid{grid-template-columns:1fr}.scene-card{display:grid;grid-template-columns:115px 1fr}.scene-still{height:100%;min-height:160px}.scene-card video{grid-column:1/-1}.scene-description{padding:17px}.scene-description h3{font-size:18px}.scene-description p{font-size:13px}.dialogue-heading{display:block}.dialogue-heading p{margin-top:6px}.spoken-line{padding:18px 15px;gap:11px;flex-wrap:wrap}.speaker-avatar{height:32px;width:32px;font-size:13px}.spoken-text .han{font-size:29px}.spoken-text .py{font-size:16px}.spoken-translation{font-size:14px}.line-pending{margin-left:43px;width:100%;padding-top:0}.line-play{height:40px;width:40px}.spoken-content{flex-basis:calc(100% - 95px)}.writing-drawer{padding:19px}.production-note{font-size:12px}}
.lesson-experience .vocabulary-rail .word-sound{width:100%;margin:0;padding:8px 0;gap:8px;flex-wrap:wrap}.lesson-experience .vocabulary-rail .word-sound .word-listen-label{width:auto;height:auto;display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:7px 9px;border-radius:8px;font:700 11px/1.3 Manrope,sans-serif;flex-shrink:0;min-height:36px}.lesson-experience .vocabulary-rail .rail-next{width:calc(100% - 46px);margin:18px 23px 23px;padding-inline:15px;gap:8px;font-size:12px}.lesson-experience .vocabulary-rail .rail-next span{flex-shrink:0}.vocabulary-rail .rail-words{max-height:calc(100dvh - 290px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#a2bca5 transparent}.rail-dialogues{border-top:2px solid #d7e3d1;margin-top:18px;padding-top:18px}.rail-dialogues h4{font:700 15px Manrope,sans-serif;margin:0 0 8px;letter-spacing:-.3px}.rail-dialogue{padding:17px 0;border-bottom:1px solid #e1e7dc}.rail-dialogue:last-child{border-bottom:0}.rail-speaker{display:block;font:700 11px Manrope,sans-serif;color:#315b46;margin-bottom:7px}.rail-line-play{display:flex;flex-direction:column;gap:6px;align-items:flex-start;text-align:left;border:1px solid #dce5d5;background:#f5f8ef;border-radius:10px;padding:10px;width:100%;color:#163e30;min-height:48px}.rail-line-play:hover,.rail-line-play.is-speaking{background:#e2f0d9;border-color:#377b55}.rail-line-play .han,.rail-line-pending{font-size:clamp(25px,2.4vw,32px);line-height:1.55;overflow-wrap:anywhere;max-width:100%}.rail-play-label{font:700 11px Manrope,sans-serif;color:#286a48}.rail-dialogue .py{font-size:13px;line-height:1.6;display:block}.rail-dialogue .meaning{display:block;font-size:12px;line-height:1.5}.rail-audio-pending{display:block;font-size:11px;color:#7b6851}.vocabulary-rail .word .han{overflow-wrap:anywhere;max-width:100%}@media(max-width:720px){.lesson-experience .vocabulary-rail .rail-next{width:calc(100% - 36px);margin:16px 18px 19px}.vocabulary-rail .rail-words{max-height:none;overflow:visible}}
@media(prefers-reduced-motion:reduce){.illustrated-cover img,.comic-art-link img,.comic-expand{transition:none}.illustrated-cover:hover img,.comic-art-link:hover img{transform:none}}