:root{color-scheme:light;--ink:#223d38;--green:#216453;--paper:#f7f8f2;--line:#dce3d9;--muted:#61746c;--rose:#f4e7e3}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Segoe UI",sans-serif;word-break:keep-all}a{color:var(--green);text-underline-offset:4px}button,a{touch-action:manipulation}button{font:inherit;cursor:pointer;color:var(--ink);border:1px solid #b7c9bc;border-radius:10px;background:white;padding:10px 16px;min-height:44px}button:hover{background:#eaf2e9}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #aa7430;outline-offset:4px}[hidden]{display:none!important}.skip{position:absolute;top:-100px}.skip:focus{top:0;background:white;padding:12px;z-index:20}header{max-width:1260px;margin:auto;padding:24px 30px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-size:27px;letter-spacing:-1px;text-decoration:none;font-weight:750}.brand span{display:block;font-size:11px;letter-spacing:1px;font-weight:450;color:var(--muted)}nav{display:flex;gap:24px;flex-wrap:wrap}header nav a{font-size:14px}main,footer{max-width:1200px;margin:auto;padding:0 30px}h1,h2,h3,p{margin:0 0 16px}h1{font-size:clamp(34px,5vw,62px);line-height:1.22;letter-spacing:-2px;font-weight:650}h1 em{font-style:normal;color:var(--green)}h2{font-size:30px;line-height:1.4;letter-spacing:-1px}h3{font-size:21px;line-height:1.6}.eyebrow{font-size:12px;font-weight:700;letter-spacing:1.5px;color:var(--green);display:block;margin-bottom:18px}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:70px;padding:70px 0 50px;align-items:center}.hero>div>p{color:#51655b}.hero-note{background:#e9eee0;border-radius:30px 30px 5px 30px;padding:38px;transform:rotate(1deg)}.hero-note>span{font-size:13px}.hero-note b{display:block;font-size:27px;line-height:1.6;margin:20px 0}.hero-note p{font-size:15px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;text-align:center;text-decoration:none;border-radius:10px;padding:12px 20px;min-height:48px;font-weight:650}.primary{background:var(--green);color:white}.secondary{background:white;border:1px solid #b7c9bc}.quiet{font-size:13px;color:var(--muted)}.language-tabs{border-bottom:1px solid var(--line);margin:0 0 42px;gap:12px}.language-tabs a{padding:16px 22px;text-decoration:none;border-bottom:3px solid transparent;font-weight:650}.language-tabs a[aria-current=true]{border-color:var(--green);background:#eaf0e4}.section-title{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}.section-title>a{font-size:13px;white-space:nowrap}.section-title .eyebrow{margin-bottom:8px}.section-title p{font-size:14px;color:var(--muted);margin:0}.lesson-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:32px;align-items:start}.teacher{position:sticky;top:24px;background:white;border:1px solid var(--line);border-radius:16px;overflow:hidden;padding-bottom:18px}.teacher img{width:100%;height:270px;object-fit:cover;object-position:50% 16%;display:block;margin-bottom:18px}.teacher h3,.teacher p,.teacher>a{margin-left:16px;margin-right:16px}.teacher h3{font-size:18px;margin-bottom:8px}.teacher p,.teacher>a{font-size:13px}.sentences{display:grid;grid-template-columns:minmax(0,1fr);gap:22px}.sentence{background:white;border:1px solid var(--line);border-radius:16px;padding:28px;scroll-margin-top:24px;min-width:0}.card-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}.number{color:#668478;font-size:12px;letter-spacing:2px}.card-top a{font-size:12px}.sentence h3{font-size:26px;letter-spacing:-.3px;overflow-wrap:anywhere}.sentence .meaning{font-size:18px}.reading{color:var(--muted);font-size:15px}.pronunciation{font-size:14px;color:#465c51}.pronunciation b{color:var(--green);margin-right:8px}.listen{font-size:14px;background:#f3f6ee}.sentence dl{border-top:1px solid var(--line);margin:22px 0 0;padding-top:20px;font-size:15px}.sentence dt{font-weight:700;margin-top:14px;font-size:13px;color:var(--green)}.sentence dd{margin:4px 0 0}.mini-quiz{margin-top:20px;border-radius:10px;background:#f6f6ee;padding:14px}.mini-quiz summary{cursor:pointer;font-size:14px}.mini-quiz p{margin:14px 0;font-size:14px}.options{display:grid;gap:8px}.options button{text-align:left;font-size:14px}.options .correct{border-color:#1b7050;background:#e7f5e9}.options .wrong{border-color:#a65440;background:#fceee9}.daily>.primary{margin:28px 0 48px}.archive,.research,.practice-callout{padding:46px 0;border-top:1px solid var(--line);margin-top:28px}.practice-callout{background:#eaf0e3;padding:38px;border:0;border-radius:20px}.archive-grid,.research-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.archive ol{padding-left:22px}.archive li{margin:12px 0}.archive li a{display:flex;justify-content:space-between;gap:14px}.archive li span{font-size:12px;white-space:nowrap}.research-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin:28px 0}.research-grid article{background:white;padding:24px;border-radius:14px;border:1px solid var(--line)}.research-grid h3{font-size:18px}.research-grid p{font-size:14px;margin:0}.page-intro{padding:58px 0 24px;max-width:790px}.page-intro.compact h1{font-size:38px}.page-intro p{margin-top:18px}.source-notes{max-width:840px}.source-notes article{border-bottom:1px solid var(--line);padding:24px 0;margin-bottom:20px}.source-notes article p{font-size:15px}.breadcrumb{margin-top:30px}.practice-toolbar,.pager{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:20px 0}.practice-toolbar span,.pager span{font-size:14px}.practice-grid{display:grid;gap:20px}.practice-card{background:white;border:1px solid var(--line);border-radius:14px;padding:24px;scroll-margin-top:20px}.practice-card .actions{margin:14px 0}.practice-card .hint,.practice-card .feedback{margin-top:18px;border-top:1px solid var(--line);padding-top:15px}.practice-card h3{font-size:23px}.feedback p{font-size:15px}.continue-card{max-width:750px;background:white;border:1px solid var(--line);border-radius:16px;padding:30px;margin-bottom:50px}.continue-card .actions{align-items:center}#practiceStatus,#continueError{color:#a23c2f;overflow-wrap:anywhere}.audio-bar{position:sticky;bottom:0;background:#fdfefbee;border-top:1px solid var(--line);padding:9px 24px;display:flex;align-items:center;justify-content:center;gap:16px;backdrop-filter:blur(12px);z-index:10}.audio-bar span{font-size:13px;max-width:300px}.audio-bar audio{height:36px;max-width:100%;width:280px}.audio-bar button{padding:6px 12px}footer{border-top:1px solid var(--line);margin-top:50px;padding-top:34px;padding-bottom:36px;font-size:14px}footer nav{margin-bottom:24px}.company{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.company p{margin-bottom:5px}
@media(max-width:740px){header{padding:18px 20px;align-items:start;flex-direction:column;gap:14px}header nav{gap:10px 18px}header nav a{font-size:12px}.brand{font-size:24px}.brand span{display:none}main,footer{padding-left:20px;padding-right:20px}.hero{grid-template-columns:1fr;padding:40px 0 25px;gap:18px}.hero-note{display:none}.hero p{font-size:15px}h1{letter-spacing:-1.4px}h2{font-size:25px}.actions{gap:8px}.primary,.secondary{font-size:14px;padding:11px 14px}.language-tabs{gap:0;margin-bottom:30px}.language-tabs a{padding:12px 14px;font-size:14px}.section-title{display:block}.section-title>a{display:block;margin-top:12px}.lesson-layout{display:block}.teacher{position:static;display:grid;grid-template-columns:78px 1fr;padding:0;column-gap:16px;margin-bottom:20px;align-items:center}.teacher img{width:78px;height:106px;grid-row:1/4;margin:0;object-position:center 15%}.teacher h3,.teacher p,.teacher>a{margin:0 10px 0 0}.teacher h3{align-self:end}.teacher p{font-size:11px;line-height:1.5}.teacher>a{font-size:11px;align-self:start}.teacher p br{display:none}.sentence{padding:20px}.sentence h3{font-size:23px}.sentence .meaning{font-size:16px}.sentence dl{font-size:14px}.sentence dd{line-height:1.85}.archive-grid,.research-grid{grid-template-columns:1fr;gap:18px}.archive li a{font-size:14px}.research-grid{margin:24px 0}.practice-callout{padding:26px 22px}.practice-toolbar{align-items:start;flex-direction:column}.practice-card{padding:20px}.page-intro.compact h1{font-size:29px}.pager{gap:8px}.pager button{font-size:12px;padding:8px}.pager span{font-size:12px}.continue-card{padding:22px}.audio-bar{gap:7px;padding:8px 12px;flex-wrap:wrap}.audio-bar span{font-size:12px;width:100%;text-align:center;max-width:none}.audio-bar audio{width:calc(100% - 75px)}footer nav{gap:10px 18px}footer nav a{font-size:13px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{overflow-wrap:anywhere}[lang="ja"],.reading{word-break:normal;overflow-wrap:anywhere}
.hero{padding-top:40px;padding-bottom:30px}.hero h1{font-size:clamp(32px,4.4vw,52px)}@media(max-width:740px){.hero{padding:26px 0 18px}.hero .eyebrow{margin-bottom:12px}.hero h1{font-size:30px}.hero .actions{margin:16px 0}.hero .actions a{flex:1;min-width:0;padding:10px;font-size:12px}.hero .quiet{font-size:11px;margin-bottom:0}.language-tabs{margin-bottom:24px}.section-title p{font-size:12px;line-height:1.5}.teacher img{height:90px}.section-title{margin-bottom:18px}}

.sentence-scene{margin:0 0 22px;overflow:hidden;border-radius:12px;background:#f4ecdf}.sentence-scene img{display:block;width:100%;height:auto;max-height:320px;object-fit:contain}.related-sentences{margin-top:22px;padding:16px;border-radius:12px;background:#f2f5eb}.related-sentences summary{cursor:pointer;font-weight:650}.related-sentences>p{font-size:13px;margin:12px 0}.related-list{display:grid;gap:10px}.related-item button{width:100%;text-align:left;display:flex;gap:10px;align-items:baseline}.related-meaning{font-size:15px;margin:8px 8px 0}.related-item button[aria-expanded=true]{border-color:var(--green);background:#e5f0e4}.teacher-art{position:relative;width:100%;height:270px;overflow:hidden;background:#faf6ed;margin-bottom:16px}.teacher .teacher-art img,.teacher .teacher-art canvas{width:100%;height:100%;object-fit:cover;object-position:center 18%;margin:0;display:block}.teacher-art[data-portrait=es] img{width:300%;max-width:none;height:200%;object-fit:fill;position:absolute;left:0;top:0}.teacher small{display:block;font-size:10px;line-height:1.6;margin:0 16px;color:var(--muted)}.teacher[data-speaking=true]{border-color:#50846c}.teacher[data-speaking=true] .teacher-speaking{color:var(--green);font-weight:700}.practice-layout #practice{min-width:0}.audio-teacher{width:60px;height:60px;flex:0 0 60px;overflow:hidden;border-radius:50%;border:2px solid #acc6b4}.audio-teacher canvas{width:100%;height:100%;object-fit:cover;object-position:center 12%}.audio-bar{padding-bottom:max(9px,env(safe-area-inset-bottom))}.audio-bar #audioStatus{flex:1;max-width:260px}.practice-layout .teacher{margin-top:20px}
@media(max-width:740px){.teacher{grid-template-columns:78px minmax(0,1fr);grid-template-rows:auto auto auto;padding-right:8px;gap:0 14px}.teacher-art{grid-row:1/4;height:106px;width:78px;margin:0}.teacher .teacher-art img,.teacher .teacher-art canvas{height:100%;width:100%}.teacher .teacher-art[data-portrait=es] img{width:300%;height:200%}.teacher small{margin:0;font-size:9px}.teacher .teacher-speaking{font-size:11px;margin:0;line-height:1.4}.teacher h3{margin-top:5px}.sentence-scene{margin-bottom:16px}.sentence-scene img{max-height:210px}.related-sentences{padding:12px}.related-item button{font-size:14px;padding:10px}.audio-bar{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:4px 8px}.audio-teacher{width:48px;height:58px;grid-column:1;grid-row:1/3;border-radius:10px}.audio-bar #audioStatus{grid-column:2/4;text-align:left;width:auto;max-width:none;font-size:11px}.audio-bar audio{grid-column:2;width:100%;min-width:0}.audio-bar button{grid-column:3;padding:4px 9px;font-size:12px}.practice-layout .teacher{margin-top:0}.practice-card .sentence-scene img{max-height:190px}}

.audio-teacher{position:relative}.audio-teacher>img{position:absolute;width:180%;height:240%;object-fit:cover;left:-40%;top:-20%}.audio-teacher[data-portrait=es]>img{width:540%;height:480%;object-fit:fill;left:-40%;top:-20%}

.teacher-art[data-portrait=en] img{width:300%;max-width:none;height:400%;object-fit:fill;position:absolute;left:0;top:0}.audio-teacher[data-portrait=en]>img{width:540%;height:960%;object-fit:fill;left:-40%;top:-20%}

/* Business and contact pages */
.business-hero{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center;padding:55px 0 70px}.business-hero h1{font-size:clamp(36px,5vw,64px);line-height:1.2;letter-spacing:-2px;margin:20px 0}.business-lead{font-size:19px;line-height:1.85}.business-map{background:#173d36;color:#fff8e8;border-radius:24px;padding:34px;box-shadow:12px 12px 0 #e1e9dd}.business-map>span{font-size:13px;color:#c1d8c8}.business-map b{display:flex;gap:22px;padding:25px 0;border-bottom:1px solid #ffffff35;font-size:16px;color:#bad4ba}.business-map em{font-style:normal;color:#fff8e8;font-size:25px}.business-map p{color:#d2e2d4;font-size:13px;margin-top:25px}.business-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.business-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.business-card{background:#fffdf7;border:1px solid #dce3d8;border-radius:20px;padding:28px;min-width:0}.business-card h3{font-size:23px;line-height:1.4}.business-card p,.business-card li{line-height:1.85}.business-card ul{padding-left:20px}.business-highlight{background:#edf3e9}.business-number{font-size:12px;letter-spacing:1px;color:#46684b}.business-delivery{border-top:1px solid #dce3d8;padding-top:18px;font-size:13px;color:#536454}.business-section{padding:40px 0}.business-section h2{font-size:clamp(25px,3vw,34px);line-height:1.4;margin:12px 0 26px}.business-proof{margin-top:32px;padding:30px;background:#edf3e9;border-radius:20px}.business-proof p{line-height:1.9}.business-steps{list-style:none;counter-reset:step;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;padding:0}.business-steps li{counter-increment:step;border-top:2px solid #51715b;padding-top:20px}.business-steps li:before{content:'0' counter(step);display:block;color:#648168;font-size:13px;margin-bottom:12px}.business-steps b{font-size:19px}.business-steps p{line-height:1.8}.business-faq details{padding:20px 0;border-bottom:1px solid #dce3d8}.business-faq summary{cursor:pointer;font-weight:700}.business-faq p{line-height:1.9;max-width:80ch}.business-contact{margin:38px 0;padding:36px;border-radius:20px;background:#e8efdf;overflow-wrap:anywhere}.business-contact p{line-height:1.9}.business-contact .primary{display:inline-flex;margin:12px 0}.business-hero .actions{flex-wrap:wrap}.business-hero .quiet{margin-top:24px;line-height:1.8}@media(max-width:800px){.business-hero{grid-template-columns:1fr;gap:30px;padding:26px 0 38px}.business-grid.three{grid-template-columns:1fr}.business-steps{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){.business-grid{grid-template-columns:1fr}.business-card,.business-contact,.business-map,.business-proof{padding:24px}.business-map{box-shadow:6px 6px 0 #e1e9dd}.business-map em{font-size:22px}.business-steps{grid-template-columns:1fr}.business-lead{font-size:17px}.business-hero .actions a{width:100%;justify-content:center}.business-contact h2{font-size:25px}}