a{color:var(--green);text-underline-offset:4px}.brand{text-decoration:none}.site-header{height:auto;min-height:86px;gap:22px}.site-header nav{display:flex;gap:24px;font-size:13px;font-weight:700}.site-header nav a{text-decoration:none;padding:14px 0}.skip{position:absolute;left:12px;top:-100px;background:white;padding:12px;z-index:99}.skip:focus{top:12px}.hero h1{font-size:clamp(42px,5.5vw,68px);letter-spacing:-2px;line-height:1.25}.hero{margin:25px 0 40px;gap:64px}.hero-art{padding:20px 30px 38px;border-radius:28px}.hero-art svg{max-height:365px}.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin:24px 0 10px}.primary{display:inline-block;text-decoration:none}.small{font-size:12px;color:var(--muted)}.how-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;border-top:1px solid #d5ddce;padding:24px 0 30px}.how-strip b{font-size:14px}.how-strip p{font-size:12px;color:var(--muted);margin:8px 0}.guides{margin:50px 0}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.guide-card{display:block;background:white;border:1px solid #dce2d9;border-radius:18px;padding:25px;text-decoration:none;transition:transform .15s}.guide-card:hover{transform:translateY(-3px);border-color:var(--green)}.guide-card h3{font-size:18px;line-height:1.5;margin:14px 0 8px}.guide-card p{font-size:12px;color:var(--muted);margin:0 0 24px}.guide-card>span:last-child{font-size:12px;font-weight:700}.guide-card .level{font-size:11px}.board-banner{display:flex;align-items:center;justify-content:space-between;gap:30px;background:#e5edda;border-radius:22px;padding:34px}.board-banner h2{font-size:30px;line-height:1.4;margin:12px 0}.board-banner p{font-size:13px}.reading{font-size:11px;display:block;margin-top:6px}.records{margin:34px 0;border-top:1px solid #dce2d9;padding-top:20px}.records h2{font-size:17px}.records p{font-size:12px}.records>div{display:flex;gap:10px;flex-wrap:wrap}.file-label{display:inline-block;cursor:pointer}.file-label input{position:absolute;width:1px;height:1px;opacity:0}.file-label:focus-within{outline:3px solid #e8a337;outline-offset:3px}.site-footer{max-width:1180px;margin:0 auto;padding:30px 28px 45px;border-top:1px solid #dce2d9}.site-footer .brand{font-size:16px}.site-footer nav{display:flex;gap:20px;flex-wrap:wrap;font-size:12px}.page-intro{padding:24px 0 38px}.page-intro h1{font-size:44px}.lead{font-size:16px;color:#5b7063;line-height:1.9}.article-layout{display:grid;grid-template-columns:minmax(0,740px) 260px;gap:70px;align-items:start;margin:24px auto}.article h1{font-size:40px;margin:26px 0 16px}.article section{margin:36px 0}.article section h2{font-size:22px;line-height:1.5;margin:0 0 14px}.article section p,.article li{font-size:15px;line-height:2}.article ol{padding-left:24px}.article-aside{margin-top:85px;background:#e9eee3;border-radius:18px;padding:25px;position:sticky;top:24px}.article-aside h2{font-size:19px;line-height:1.6}.article-aside p{font-size:13px}.article-aside .primary{font-size:12px}.article-aside hr{border:0;border-top:1px solid #cdd8c5;margin:25px 0}.article-aside>a:last-child{font-size:12px}.back-link{font-size:12px;text-decoration:none}.try-panel{border:1px solid #cfdbc4;background:#e9eee3;border-radius:20px;padding:26px}.try-panel h2{margin-top:12px!important}.source-note{font-size:12px;line-height:1.9;color:var(--muted);margin-top:25px}.related{display:flex;justify-content:space-between;gap:20px;margin:30px 0;font-size:12px}@media(max-width:900px){.article-layout{grid-template-columns:1fr;gap:20px}.article-aside{position:static;margin-top:0}.guide-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){.site-header{padding:16px 18px;flex-wrap:wrap;gap:12px}.site-header nav{gap:18px;font-size:11px;width:100%}.site-header nav a{padding:0}.hero{gap:25px;margin-top:12px}.hero h1{font-size:46px}.hero-art{max-height:290px}.hero-art svg{max-height:250px}.hero-actions{gap:18px;font-size:12px}.how-strip{gap:12px}.how-strip b{font-size:12px}.how-strip p{font-size:11px}.guide-grid{grid-template-columns:1fr}.guide-card{padding:22px}.board-banner{flex-direction:column;align-items:flex-start;padding:26px}.article h1,.page-intro h1{font-size:32px;letter-spacing:-1px}.article-layout{margin:8px 0}.article section p,.article li{font-size:14px}.site-footer{padding:28px 18px}.related{flex-wrap:wrap}.stats strong#rank{font-size:22px}}

.breadcrumbs{font-size:12px;line-height:1.8;color:var(--muted);margin:20px 0;overflow-wrap:anywhere}.breadcrumbs a{display:inline-block}

/* Readings and answer visibility */
ruby{ruby-align:center}rt{font-size:.58em;font-weight:500;line-height:1.2;letter-spacing:0}.furigana-off rt{display:none}
.furigana-toggle{background:#eef3e7;border:1px solid #cbd7c3;border-radius:20px;color:#17382e;padding:8px 12px;font-size:12px;white-space:nowrap;cursor:pointer;margin-left:auto}
.site-header nav{margin-left:12px}.answer,.modal-body p,.lesson b,.article p{line-height:2}.answer-notice{background:#e5edda;border-left:4px solid #226d4d;padding:12px 14px;border-radius:10px;font-weight:700;line-height:2}.feedback:focus,#answer-status:focus{outline:none}
@media(max-width:700px){.site-header{height:auto;min-height:68px;flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px}.site-header nav{margin-left:0;width:100%;justify-content:space-between}.furigana-toggle{font-size:11px;padding:7px 9px}.modal-head{line-height:2}}

.gear-section{margin:54px 0}.gear-section>h2{font-size:28px;line-height:1.6}.gear-section>p{font-size:15px;line-height:2}.gear-jump{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}.gear-jump a{padding:10px 15px;border:1px solid #cbd7c3;border-radius:24px;font-size:13px;text-decoration:none;background:#fff}.gear-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.gear-card{padding:26px;background:#fff;border:1px solid #dce2d9;border-radius:20px}.gear-card h3{font-size:22px;line-height:1.7}.gear-card p{font-size:14px;line-height:2}.gear-card a{font-size:13px}.gear-card-head{display:flex;justify-content:space-between;gap:12px;align-items:center}.gear-number{font-size:24px;font-weight:800;color:#63805d}.gear-tag{font-size:12px;background:#e9eee3;padding:6px 12px;border-radius:20px;line-height:2}.gear-table-wrap{overflow-x:auto}.gear-table{border-collapse:collapse;width:100%;background:#fff;table-layout:fixed}.gear-table caption{text-align:left;font-size:13px;margin:12px 0}.gear-table th,.gear-table td{border:1px solid #dce2d9;padding:18px;text-align:left;line-height:2;font-size:14px}.gear-table th:first-child{width:30%}.gear-table thead{background:#e9eee3}.gear-checklist{display:grid;gap:10px}.gear-checklist label{display:flex;gap:12px;align-items:center;background:white;border:1px solid #dce2d9;padding:16px;border-radius:12px;cursor:pointer;font-size:14px;line-height:2}.gear-checklist input{width:20px;height:20px;accent-color:#226d4d;flex-shrink:0}.gear-checklist label:has(input:checked){background:#e5edda}.gear-home{justify-content:space-between;flex-wrap:wrap}.gear-home a{font-weight:700;font-size:14px}.gear-disclosure,.gear-products{background:#f2ead7;border:1px solid #dacba8;padding:16px;border-radius:12px;font-size:13px;line-height:2}.gear-products{margin-top:20px}.gear-products ul{padding-left:20px}.gear-section,.gear-card{scroll-margin-top:24px}
@media(max-width:700px){.gear-grid{grid-template-columns:1fr}.gear-section{margin:36px 0}.gear-section>h2{font-size:24px}.gear-card{padding:22px}.gear-table th,.gear-table td{padding:12px;font-size:13px}.site-header nav{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 20px}.gear-jump a{font-size:12px}}

.courses .course:nth-child(3){grid-column:1/-1}.courses .course:nth-child(3) .course-top{background:#dfeaf0}

.triangle-key{font-size:11px;color:var(--muted);line-height:2;margin:8px 0 16px}

/* Purpose-first navigation and focused learning pages. */
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@media(prefers-reduced-motion:reduce){.entry-card,.guide-card{transition:none}.entry-card:hover,.guide-card:hover{transform:none}}

.explainer{padding:24px;border:1px solid #cbd7c3;border-radius:20px;background:#fff;scroll-margin-top:24px}.explainer>h2{margin-top:14px!important}.explainer video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#17382e;border-radius:12px}.explainer>p{font-size:14px!important}.explainer .small{font-size:12px!important}.explainer details{border-top:1px solid #dce2d9;margin-top:16px;padding-top:12px}.explainer summary{cursor:pointer;font-size:14px;font-weight:700;line-height:2;padding:8px 0}.chapter-grid{display:grid;gap:8px;margin-top:12px}.chapter-grid button{display:flex;gap:12px;text-align:left;background:#f2f5eb;border:1px solid #dce2d9;border-radius:10px;padding:12px;color:var(--ink);line-height:2;font-size:13px}.chapter-grid button[aria-current]{border-color:#145c43;background:#e5edda}.chapter-grid span{font-variant-numeric:tabular-nums;flex-shrink:0;font-weight:700}.video-transcript section{margin:20px 0!important}.video-transcript h3,.related-video h3{font-size:17px;line-height:1.8}.related-video-body{padding-top:10px}.related-video iframe{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:12px;background:#17382e}.video-status:empty{display:none}.video-status{font-size:13px}.explainer .minor{font-size:14px;line-height:2}
@media(max-width:700px){.explainer{padding:16px}.explainer>h2{font-size:20px!important}.chapter-grid button{font-size:12px}.explainer summary{font-size:13px}}
.lesson-jump{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}.lesson-jump a{font-size:13px;background:#e5edda;border:1px solid #cbd7c3;border-radius:24px;padding:9px 16px;text-decoration:none;line-height:2}