:root{--paper:#faf8f5;--ink:#292b28;--muted:#73756f;--line:#e4dfd7;--orange:#d86120;--soft:#fff0e3}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Noto Sans KR',sans-serif;font-size:16px;line-height:1.6;word-break:keep-all}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,select,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #a34b1a;outline-offset:5px}[hidden]{display:none!important}.skip{position:absolute;top:-100px}.skip:focus{top:0;background:white;z-index:10;padding:16px}header{border-bottom:1px solid var(--line)}.nav{max-width:1220px;margin:auto;min-height:90px;display:flex;align-items:center;gap:65px;padding:0 30px}.brand{font-size:26px;letter-spacing:-1px;font-weight:600;white-space:nowrap}.brand b{color:var(--orange)}.nav-current{color:var(--orange);border-bottom:2px solid var(--orange);padding:30px 0}.course-link{margin-left:auto;font-size:14px}main{max-width:1160px;margin:auto;padding:0 24px}.intro{text-align:center;padding:42px 0 28px}.eyebrow{font-size:12px;letter-spacing:1.8px;color:var(--orange);font-weight:600;margin:0 0 9px}.intro h1{font-size:36px;letter-spacing:-1.5px;font-weight:650;margin:0 0 8px}.intro p:last-child{color:var(--muted);margin:0}.spark{display:inline-block;color:var(--orange);font-size:28px;vertical-align:top;margin-left:9px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:12px 0 16px}.filters{display:flex;gap:8px;flex-wrap:wrap}.filters button{border:0;border-radius:40px;padding:8px 18px;background:#eeebe6;color:#55564f;font-size:14px}.filters button.active{background:var(--orange);color:white}.search{display:flex;gap:9px;align-items:center;border:1px solid var(--line);padding:7px 13px;border-radius:30px;min-width:240px}.search span{font-size:25px;line-height:1}.search input{background:none;border:0;outline:0;min-width:0;width:100%;font-size:14px}.sample-note{font-size:13px;color:var(--muted);margin:10px 0 16px}.sample-note span{font-size:11px;letter-spacing:1px;border:1px solid #d5cec4;padding:2px 5px;border-radius:4px;margin-right:5px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 20px}.card{display:block;min-width:0}.thumb{height:166px;position:relative;border-radius:6px;overflow:hidden;background:#eae1d5}.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}.card:hover .thumb img{transform:scale(1.045)}.card:hover h2{color:var(--orange)}.card h2{font-size:18px;line-height:1.5;letter-spacing:-.55px;font-weight:550;margin:9px 0 0}.thumb .play-icon{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;background:#292b28bb;color:white;width:43px;height:43px;display:grid;place-items:center;font-size:16px;padding-left:3px;box-shadow:0 2px 10px #0001}.sample-badge,.external-badge{position:absolute;right:10px;top:10px;font-size:11px;line-height:1.5;padding:3px 9px;border-radius:20px;background:var(--orange);color:white}.external-badge{background:#fff9;color:#54544c}.type-art{width:100%;height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;background:linear-gradient(130deg,#ece2d4,#f7f1e7);color:#76664f}.type-art .big{font:italic 50px Georgia,serif;letter-spacing:-1px}.type-art small{letter-spacing:3px;font-size:11px;margin:7px}.tone-1{background:#eae7dc;color:#6f7460}.tone-2{background:#f5e3ce;color:#a06c38}.tone-3{background:#e7e4dd;color:#59594e}.more-wrap{text-align:center;padding:30px}.button{border:1px solid var(--line);border-radius:7px;padding:12px 23px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:15px;font-weight:500;background:transparent;line-height:1.4;min-height:46px}.button:hover{border-color:var(--orange)}.button.primary{background:var(--orange);color:#fff;border-color:var(--orange)}.button.primary:hover{background:#bd5117}.button.light{background:#fff8}.home-cta{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;padding:23px 0;font-size:13px;color:#5f6059}.home-cta i{font-style:normal;color:#aaa;padding:0 12px}.home-cta a{color:var(--orange)}footer{max-width:1160px;margin:25px auto 0;padding:24px;border-top:1px solid var(--line);display:flex;align-items:center;gap:16px;color:var(--muted);font-size:12px}footer .brand{font-size:19px}.test-label{margin-left:auto}.back{display:inline-block;color:var(--muted);font-size:14px;margin:30px 0 20px}.lesson-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.lesson-heading h1{font-size:32px;font-weight:600;letter-spacing:-1.1px;margin:0}.lesson-heading .eyebrow{font-size:13px;letter-spacing:0}.dot{margin:0 8px;color:#b3a393}.free,.small-tag{background:var(--soft);color:#a65023;font-size:13px;padding:5px 12px;border-radius:20px}.player{width:100%;aspect-ratio:16/9;background:#e9dfd1;border-radius:9px;overflow:hidden}.player>button{display:block;border:0;padding:0;width:100%;height:100%;position:relative;text-align:left;background:#eee;color:var(--ink)}.player img{width:100%;height:100%;object-fit:cover}.player>button:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#faf4e9e6,transparent 75%);pointer-events:none}.poster-copy{position:absolute;left:5%;top:13%;z-index:1;display:flex;flex-direction:column;gap:15px;max-width:70%}.poster-copy small{font-size:12px;letter-spacing:2px;color:#a25326}.poster-copy strong{font-size:clamp(20px,3vw,38px);font-weight:600;letter-spacing:-1px}.poster-copy>span{font-size:18px;color:#656458}.play-circle{position:absolute;z-index:2;left:50%;top:55%;transform:translate(-50%,-50%);width:72px;height:72px;border-radius:50%;display:grid;place-items:center;background:#2b2c28c7;color:white;font-size:27px;padding-left:5px}.player-bottom{position:absolute;bottom:0;left:0;right:0;padding:14px 23px;background:#292b28;color:#fff;z-index:2;display:flex;gap:16px;font-size:13px}.player-bottom b{margin-left:auto;font-weight:400;color:#ddd}.player iframe{width:100%;height:100%;border:0}.source-line{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:13px;margin:13px 0 40px}.source-line a{text-decoration:underline;text-underline-offset:4px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}.section-heading h2{font-size:24px;font-weight:600;letter-spacing:-.7px;margin:0}.text-button{border:0;background:transparent;color:var(--orange);font-size:14px;padding:8px}.summary-image{width:min(100%,760px);height:auto;display:block;margin:0 auto;border:1px solid var(--line);border-radius:8px}.download{text-align:center;padding:22px 0 32px}.download p{font-size:13px;color:var(--muted);margin:9px 0}.practice{border-top:1px solid var(--line);padding:32px 0 20px}.practice-columns{display:grid;grid-template-columns:1.2fr 1fr;background:#fff9;border:1px solid var(--line);border-radius:10px}.practice-columns>div{padding:28px}.recall{border-left:1px solid var(--line)}.practice-label{font-size:15px;color:var(--muted);margin:0 0 20px}.practice label{margin-right:14px}.practice select{padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:var(--paper);color:var(--ink)}.sentence{font-size:23px;font-family:Georgia,serif;margin:22px 0}.sentence strong{color:var(--orange);font-weight:500}.actions{display:flex;gap:10px;flex-wrap:wrap}.feedback{font-size:13px;color:#556c48;min-height:20px;margin-bottom:0}.quiz{display:flex;align-items:baseline;gap:24px;min-height:78px}.quiz strong{font-size:40px;font-weight:500}.quiz span{font:30px Georgia,serif;color:var(--orange)}.audio-note{font-size:12px;color:var(--muted)}.next-row{display:flex;justify-content:space-between;gap:16px;padding:20px 0 30px;font-size:14px}.cta{background:#f8e9db;border-radius:9px;padding:35px;display:grid;grid-template-columns:1fr 1.3fr;gap:30px;margin-bottom:35px}.cta h2{font-size:23px;line-height:1.5;font-weight:600;margin:0}.cta em{color:var(--orange);font-style:normal}.cta p{font-size:14px;color:#77695d;margin-bottom:0}.cta-path{align-self:center;text-align:center}.cta-path>div{display:flex;justify-content:center;gap:14px;margin-bottom:20px;align-items:center;font-size:14px}.cta-path b{display:block;font-size:11px;letter-spacing:1px;color:#aa6d42;font-weight:400}.cta-path i{font-style:normal;color:#baa28e}.cta .button{font-size:14px;width:100%}#empty{text-align:center;padding:70px 0;color:var(--muted)}
@media(min-width:1250px){.card h2{white-space:nowrap}}@media(max-width:850px){.nav{gap:28px;min-height:74px}.nav-current{padding:24px 0}.toolbar{align-items:flex-start;flex-direction:column}.search{width:100%}.grid{gap:20px 16px}.thumb{height:140px}.card h2{font-size:16px}.type-art .big{font-size:38px}.home-cta{flex-direction:column;gap:12px}.cta{grid-template-columns:1fr}.intro h1{font-size:31px}.lesson-heading h1{font-size:28px}}
@media(max-width:600px){.nav{padding:0 20px;gap:20px;min-height:72px}.brand{font-size:23px}.nav-current{display:none}.course-link{font-size:12px}main{padding:0 20px}.intro{padding:30px 0 18px}.intro h1{font-size:27px}.intro p:last-child{font-size:14px}.intro .eyebrow{font-size:10px}.spark{font-size:22px}.filters{gap:6px}.filters button{padding:7px 12px;font-size:13px}.sample-note{font-size:12px}.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}.thumb{height:110px}.type-art .big{font-size:29px}.type-art small{font-size:9px;letter-spacing:1px}.thumb .play-icon{width:33px;height:33px;font-size:12px}.sample-badge,.external-badge{font-size:10px;right:6px;top:6px;padding:2px 6px}.card h2{font-size:15px;font-weight:500;letter-spacing:-.4px;line-height:1.5}.home-cta{font-size:12px}.home-cta i{padding:0 5px}.lesson-heading{display:block}.lesson-heading h1{font-size:25px}.free{display:inline-block;margin-top:12px}.back{margin-top:22px}.poster-copy{gap:5px;max-width:85%;top:10%}.poster-copy small{font-size:8px;letter-spacing:1px}.poster-copy strong{font-size:19px}.poster-copy>span{font-size:11px}.play-circle{width:44px;height:44px;font-size:17px;top:59%}.player-bottom{padding:7px 12px;font-size:10px;gap:8px}.source-line{font-size:11px;margin-bottom:30px;flex-direction:column;gap:4px}.section-heading h2{font-size:21px}.section-heading .eyebrow{font-size:10px}.text-button{font-size:13px;white-space:nowrap}.practice-columns{grid-template-columns:1fr}.practice-columns>div{padding:22px}.recall{border-left:0;border-top:1px solid var(--line)}.small-tag{font-size:11px;padding:4px 8px}.sentence{font-size:22px}.button{font-size:14px;padding:11px 17px}.next-row{flex-direction:column;font-size:13px}.cta{padding:25px 22px;gap:22px}.cta h2{font-size:22px}.cta-path>div{gap:8px;font-size:12px}.cta .button{font-size:12px}footer{padding:20px;font-size:10px;gap:12px}footer>span:not(.test-label){display:none}.summary-image{border-radius:4px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* Public-facing course invitation shared by the library and lessons. */
.toolbar{margin-bottom:24px}.course-banner{margin:12px 0 34px;padding:32px;background:linear-gradient(115deg,#fff1e5,#f8e7d9);border:1px solid #efdfd1;border-radius:10px;display:grid;grid-template-columns:1fr 1.5fr;column-gap:30px;row-gap:22px}.course-message{grid-row:span 2;border-right:1px solid #dec7b6;padding-right:25px}.course-message h2{font-size:23px;line-height:1.5;font-weight:600;letter-spacing:-.7px;margin:0 0 12px}.course-message em{font-style:normal;color:var(--orange)}.course-message>p:last-child{font-size:14px;line-height:1.8;color:#786658;margin:0}.course-steps{display:flex;justify-content:space-between;gap:10px;align-items:center}.course-steps>div{flex:1}.course-steps span{font-size:11px;letter-spacing:1.5px;color:#ac764e}.course-steps h3{font-size:16px;font-weight:600;margin:5px 0}.course-steps p{font-size:12px;color:#796c60;margin:0}.course-steps>b{font-weight:400;color:#b99a80}.course-action{display:flex;align-items:center;gap:18px}.course-action .button{font-size:14px;white-space:nowrap}.course-action p{font-size:12px;line-height:1.6;color:#796c60;margin:0}.thumb{aspect-ratio:16/8;height:auto}.thumb img{object-fit:cover}.card h2{font-weight:500}
@media(max-width:850px){.course-banner{grid-template-columns:1fr;padding:27px}.course-message{grid-row:auto;border-right:0;padding:0}.course-steps{border-top:1px solid #e6cdb9;padding-top:18px}.course-action{justify-content:space-between}.thumb{height:auto}}
@media(max-width:600px){.course-banner{padding:24px 20px;gap:22px}.course-message h2{font-size:22px}.course-steps{flex-direction:column;align-items:stretch;gap:12px}.course-steps>div{display:grid;grid-template-columns:1fr 1.2fr;column-gap:12px}.course-steps span{grid-column:1/-1}.course-steps h3{font-size:15px;margin:3px 0}.course-steps p{font-size:12px;align-self:center}.course-steps>b{display:none}.course-action{display:block}.course-action .button{width:100%}.course-action p{text-align:center;margin-top:9px}.thumb{height:auto}}

.practice-title{font-size:19px;margin:0 0 20px;font-weight:600}.practice-label{margin:16px 0;color:#74746c;font-size:14px}.recorder{margin-top:20px}.mic-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:#204e44;color:white;border:0;border-radius:40px;padding:14px 22px;font-size:17px;font-weight:600;min-height:54px}.mic-button span{display:grid;place-items:center;background:white;color:#c23f32;width:27px;height:27px;border-radius:50%;font-size:12px}.mic-button.recording{background:#a83d31}.record-status{font-size:13px;color:#77776e;min-height:22px;margin:10px 0}.transcript-box{border:1px dashed #d2c7b9;border-radius:10px;padding:17px;background:#fff;min-height:115px}.transcript-box b{font-size:14px;color:#b0753f}.transcript{font-size:17px;color:#555e58;margin:12px 0 0;overflow-wrap:anywhere}.record-review{margin-top:15px}.record-review label,.model-label{display:block;font-size:13px;color:#727469}audio{display:block;width:100%;margin:9px 0 15px;max-width:100%}.record-review .actions{gap:8px}.record-review .button{font-size:13px;padding:10px 14px}.button:disabled,.mic-button:disabled{opacity:.45;cursor:not-allowed}.answer-box{margin-top:22px;border-top:1px solid #ddccbb;padding-top:18px}.answer-label{font-size:13px;color:#b06c32;margin:0}.answer-box .sentence{font-size:22px;line-height:1.6;margin:12px 0}.answer-box #quiz-en{font-family:Georgia,serif;font-size:30px;margin:10px 0;color:var(--orange)}.record-privacy{font-size:12px;color:#7f8178;margin:12px 0}.practice-columns{grid-template-columns:1.15fr 1fr}.quiz{min-height:68px}.recall>#next{margin-top:15px}.thumb img{background:#f0e9df}@media(max-width:600px){.practice-columns{grid-template-columns:1fr}.mic-button{font-size:16px;width:100%}.record-review .actions{flex-direction:column}.record-review .button{width:100%}.small-tag{white-space:nowrap;font-size:10px}.answer-box .sentence{font-size:21px}.record-privacy{font-size:11px}}
#dollar-lesson .practice-columns>div{min-width:0}#unit-number{font-size:clamp(22px,2.5vw,32px);overflow-wrap:anywhere;word-break:normal}#dollar-sentence{overflow-wrap:anywhere}#dollar-case{max-width:100%}#dollar-lesson .section-heading h2{font-size:clamp(20px,2.5vw,26px)}