.lesson-page{max-width:1240px;margin:0 auto;padding:62px 5vw 100px}.topbar a.nav-link{text-decoration:none;display:inline-block}.dev-pill{font-size:11px;font-weight:900;letter-spacing:.12em;color:var(--ink);background:var(--jade);border-radius:99px;padding:7px 10px}.lesson-hero{display:grid;grid-template-columns:1fr 330px;gap:42px;align-items:end;margin-bottom:38px}.lesson-hero h1{font-size:clamp(48px,7vw,82px);line-height:1;margin:0;letter-spacing:-.055em}.lesson-progress-card{border:1px solid var(--line);border-radius:20px;padding:22px;background:var(--ink2)}.lesson-progress-card>span,.lesson-progress-card small{color:var(--muted);font-size:12px}.lesson-progress-card strong{display:block;font-size:28px;margin:9px 0 13px}.lesson-progress-card small{display:block;margin-top:10px;line-height:1.4}.lesson-progress{height:7px;background:var(--line);border-radius:10px;overflow:hidden}.lesson-progress i{display:block;width:0;height:100%;background:var(--red);transition:width .25s}.lesson-layout{display:grid;grid-template-columns:300px 1fr;gap:18px;align-items:start}.lesson-sidebar{padding:18px;position:sticky;top:100px;max-height:calc(100vh - 120px);overflow:auto}.lesson-sidebar-head{display:flex;justify-content:space-between;align-items:start}.lesson-sidebar-head button{border:0;background:transparent;color:var(--muted);font-size:11px;cursor:pointer}.module-link{width:100%;display:grid;grid-template-columns:30px 1fr 18px;gap:10px;text-align:left;align-items:center;border:1px solid transparent;border-radius:13px;background:transparent;color:var(--paper);padding:10px;cursor:pointer}.module-link>span:first-child{color:var(--red);font-size:11px;font-weight:800}.module-link strong,.module-link small{display:block}.module-link strong{font-size:13px}.module-link small{color:var(--muted);margin-top:2px;font-size:11px}.module-link.active{border-color:var(--red);background:rgba(239,77,45,.09)}.module-link.done i:before{content:'✓';color:var(--jade);font-style:normal}.module-panel{padding:36px;min-height:620px}.module-top{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.09em}.module-body{padding:42px 0 20px}.module-body h2{font-size:clamp(32px,5vw,54px);letter-spacing:-.035em;margin:0 0 16px}.module-body h3{font-size:25px;margin:32px 0 12px}.module-body p{color:var(--muted);font-size:16px;line-height:1.7;max-width:760px}.goal-example,.grammar-card,.dialogue,.review-grid{border:1px solid var(--line);background:#111613;border-radius:18px;padding:22px;margin-top:24px}.goal-example p{font:600 20px/1.8 "Noto Sans JP",sans-serif;color:var(--paper);margin:0}.vocab-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin-top:24px}.vocab-card{background:#111613;border:1px solid var(--line);border-radius:15px;padding:15px}.vocab-card strong{font:700 21px "Noto Sans JP";display:block}.vocab-card em{color:var(--jade);font-style:normal;font-size:12px}.vocab-card span{display:block;color:var(--muted);margin-top:5px}.grammar-pattern{font:700 clamp(27px,4vw,42px) "Noto Sans JP"!important;color:var(--paper)!important;margin:0!important}.example-list{display:grid;gap:8px;margin-top:18px}.example-line{border-left:3px solid var(--red);padding:9px 13px;background:rgba(255,255,255,.02)}.example-line strong{font:600 17px "Noto Sans JP";display:block}.example-line span{color:var(--muted);font-size:13px}.question-card{margin-top:28px}.question-count{color:var(--red);font-size:12px;font-weight:800}.question-card h3{font:700 clamp(25px,4vw,38px) "Noto Sans JP";margin:10px 0 22px}.options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.option{border:1px solid var(--line);background:#111613;color:var(--paper);border-radius:14px;padding:15px;text-align:left;font-size:16px;cursor:pointer}.option:hover{border-color:var(--paper)}.option.correct{border-color:var(--jade);background:#164a36}.option.wrong{border-color:var(--red);background:#542219}.answer-form{display:flex;gap:10px}.answer-form input{flex:1;background:#111613;border:1px solid var(--line);border-radius:14px;color:var(--paper);padding:16px;font-size:17px}.feedback{margin-top:16px;padding:14px 16px;border-radius:13px;background:#252c28}.feedback.ok{color:var(--jade)}.feedback.no{color:#ff8a72}.dialogue{display:grid;gap:12px}.dialogue p{margin:0;color:var(--paper)}.dialogue strong{display:inline-block;min-width:90px;color:var(--jade)}.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.review-grid div{border-bottom:1px solid var(--line);padding:11px 0}.review-grid code{display:block;color:var(--jade);font-size:15px}.review-grid span{font-size:12px;color:var(--muted)}.module-footer{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:22px}.module-footer button:disabled{opacity:.35;cursor:default}.source-note{color:var(--muted);font-size:12px;line-height:1.6;margin:24px 0}.hidden{display:none!important}@media(max-width:850px){.lesson-hero,.lesson-layout{grid-template-columns:1fr}.lesson-sidebar{position:static;max-height:none}.lesson-sidebar nav{display:flex;overflow:auto;gap:6px}.module-link{min-width:190px}.module-panel{padding:24px;min-height:560px}.vocab-grid,.options,.review-grid{grid-template-columns:1fr}.answer-form{display:grid}.lesson-page{padding:42px 18px 80px}.nav{overflow:auto}.nav-link{white-space:nowrap}.dev-pill{display:none}}@media(max-width:520px){.lesson-sidebar{display:none}.module-body{padding-top:30px}.module-panel{padding:19px}.module-footer .primary,.module-footer .secondary{padding:13px}.lesson-hero{gap:24px}}
