:root{--ink:#182b42;--muted:#627389;--blue:#163a65;--accent:#2368d1;--pale:#edf4ff;--line:#dce4ee;--bg:#f5f7fb;--orange:#eda23c;--green:#247250;--red:#a74137;--radius:18px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);line-height:1.65}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}a{color:var(--accent);text-underline-offset:3px}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #e19a30;outline-offset:4px}button{transition:background .15s,border-color .15s}h1,h2,h3,p{margin:0}h1{font-size:28px;line-height:1.4;letter-spacing:.2px}h2{font-size:20px;line-height:1.5}h3{font-size:16px}small{font-size:12px}button svg{width:18px;height:18px;flex:none}svg{vertical-align:middle}.topbar{height:90px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1264px)/2));gap:20px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;color:var(--ink);font-size:19px;font-weight:750;letter-spacing:.8px}.brand small{display:block;font-size:11px;font-weight:400;color:var(--muted);letter-spacing:1px;margin-top:1px}.brand-mark{display:grid;place-items:center;width:44px;height:44px;position:relative;border-radius:12px;background:var(--blue);color:white;font-size:24px;letter-spacing:-1px;font-family:Georgia,serif}.brand-mark span{position:absolute;bottom:7px;width:22px;height:2px;background:var(--orange)}.shell{max-width:1264px;padding:32px 28px 48px;margin:auto;display:grid;grid-template-columns:216px minmax(0,1fr);gap:42px}.eyebrow{font-size:11px;font-weight:700;color:var(--muted);letter-spacing:2px;margin:5px 0 18px}.sidebar{padding-top:5px}.nav-button{display:flex;align-items:center;width:100%;gap:15px;background:none;border:1px solid transparent;border-radius:11px;padding:13px 15px;text-align:left;margin:5px 0;font-size:14px;font-weight:600;color:#596b7f}.nav-button span{font:12px ui-monospace,monospace;opacity:.7}.nav-button.active{color:var(--blue);background:#e5edf9;border-color:#dbe5f4}.nav-button:hover{background:#eaf0f8}.sidebar-note{padding:30px 15px 23px}.note-line{display:block;width:26px;height:3px;background:var(--orange);margin-bottom:15px}.sidebar-note h2{font-size:14px}.sidebar-note p{font-size:12px;color:var(--muted);line-height:1.9;margin-top:8px}.sidebar-progress{border-top:1px solid var(--line);padding:22px 15px}.sidebar-progress>span{font-size:12px;color:var(--muted)}.sidebar-progress strong{display:block;font-size:29px;font-weight:600;line-height:1.5}.sidebar-progress small{font-size:12px;font-weight:400;color:var(--muted)}.sidebar-progress p{font-size:10px;color:var(--muted);margin-top:6px}main{min-width:0;outline:none}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:22px}.page-head p{font-size:14px;color:var(--muted);margin-top:8px}.page-kicker{display:block;font-size:11px;font-weight:700;letter-spacing:1.5px;color:var(--accent);margin:4px 0 9px}.lesson-picker{max-width:230px;border:1px solid var(--line);border-radius:9px;background:white;padding:9px 30px 9px 12px;font-size:12px;min-height:42px;color:var(--ink)}.lesson-strip{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.word-chip{background:white;border:1px solid var(--line);padding:6px 14px;border-radius:7px;font-size:12px;line-height:1.7}.word-chip.active{border-color:var(--blue);background:var(--blue);color:white}.word-chip.seen:not(.active){background:#edf3f8}.study-card{background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 7px 26px #17325706}.card-top{display:flex;align-items:center;justify-content:space-between;padding:20px 28px;border-bottom:1px solid #edf0f6;color:var(--muted);font-size:12px;gap:12px}.card-top strong{color:var(--blue);font-weight:600}.micro-progress{display:flex;gap:5px}.micro-progress span{height:4px;width:18px;background:#e6ebf3;border-radius:3px}.micro-progress .filled{background:var(--accent)}.word-body{padding:34px 36px 26px;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}.japanese-word{font-size:58px;line-height:1.16;font-weight:650;letter-spacing:-1.5px;overflow-wrap:anywhere}.word-meaning{font-size:24px;margin-top:13px;font-weight:550}.word-explanation{font-size:14px;color:#596e85;margin-top:10px;max-width:560px}.speaker-button{display:flex;align-items:center;gap:8px;background:#f0f5fc;border:1px solid #e3ebf6;border-radius:100px;font-size:12px;padding:10px 17px;white-space:nowrap}.speaker-button:hover{background:#e3edfc}.example-box{margin:0 36px 26px;background:#f7f9fc;border:1px solid #e3eaf2;border-radius:12px;padding:18px 21px}.example-label{font-size:10px;color:var(--muted);letter-spacing:1px;text-transform:uppercase;display:flex;justify-content:space-between;gap:12px}.example-en{font-size:18px;color:var(--blue);margin-top:10px;overflow-wrap:anywhere}.example-zh{font-size:13px;color:var(--muted);margin-top:4px}.apps{display:flex;gap:7px;flex-wrap:wrap;margin:0 36px 23px}.app-tag{font-size:10px;padding:3px 8px;background:#f0f3f8;border-radius:5px;color:#627188}.contrast{border-left:3px solid var(--orange);padding:0 13px;margin:0 36px 25px;font-size:12px;color:#687184}.contrast strong{display:block;color:#605438;font-weight:600;font-size:11px;margin-bottom:4px}.card-bottom{border-top:1px solid var(--line);padding:18px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px}.card-bottom .text-button{font-size:11px}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--blue);background:var(--blue);color:white;font-size:14px;padding:11px 22px;border-radius:9px;min-height:46px;font-weight:600}.primary-button:hover{background:#244d80}.secondary-button,.quiet-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:white;border:1px solid var(--line);border-radius:9px;padding:9px 15px;font-size:12px;min-height:40px}.secondary-button:hover,.quiet-button:hover{background:#f1f5fa}.text-button{background:none;border:0;padding:5px 0;color:var(--muted);font-size:12px;text-decoration:underline;text-underline-offset:4px}.below-note{display:flex;align-items:flex-start;gap:10px;color:var(--muted);font-size:12px;line-height:1.8;padding:17px 4px}.below-note strong{color:var(--ink);font-weight:600}.review-banner{margin-top:18px;background:#eaf2fe;border:1px solid #d9e7fc;padding:15px 18px;border-radius:12px;display:flex;align-items:center;justify-content:space-between;font-size:13px;gap:14px}footer{max-width:1264px;padding:0 28px 24px;display:flex;justify-content:space-between;margin:auto;font-size:11px;color:var(--muted);gap:12px}.quiz-content{padding:30px 36px}.quiz-term{font-size:42px;font-weight:650;letter-spacing:-.5px;margin:12px 0 24px;overflow-wrap:anywhere}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.choice{background:white;border:1px solid #ccd8e6;display:flex;text-align:left;align-items:center;gap:14px;border-radius:10px;padding:16px;min-height:66px;font-size:16px}.choice-letter{background:#f1f4f9;display:grid;place-items:center;min-width:26px;height:26px;border-radius:6px;font:11px ui-monospace,monospace;color:var(--muted)}.choice:hover:not(:disabled){border-color:var(--blue);background:#f5f8fd}.choice.correct{background:#edf8f2;border-color:#53a880;color:#245b42;opacity:1}.choice.wrong{background:#fdf1ed;border-color:#da9b91;color:#a34237;opacity:1}.feedback{background:#edf5ff;border-radius:10px;padding:16px 19px;margin-top:20px;font-size:13px;color:var(--blue)}.feedback strong{display:block;font-size:15px;margin-bottom:6px}.feedback.error{background:#fff4e7;color:#7e5429}.quiz-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:24px}.complete{padding:40px 36px;text-align:center}.complete-mark{font-size:34px;width:66px;height:66px;display:grid;place-items:center;margin:0 auto 20px;background:#e9f3fe;border-radius:50%;color:var(--accent)}.complete h2{font-size:25px}.complete p{font-size:14px;color:var(--muted);margin:12px auto 24px;max-width:440px}.complete-buttons{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.library-controls{display:grid;grid-template-columns:1fr auto;gap:12px;margin-bottom:18px}.search-input{min-width:0;background:white;border:1px solid var(--line);border-radius:9px;padding:12px 15px;font-size:14px;width:100%}.filter-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.filter-chip{border:1px solid var(--line);border-radius:7px;background:white;padding:7px 13px;font-size:12px}.filter-chip.active{background:var(--blue);border-color:var(--blue);color:white}.word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.word-tile{border:1px solid var(--line);border-radius:12px;background:white;padding:20px 18px;text-align:left;min-height:145px}.word-tile:hover{border-color:#93a9c6}.word-tile .term{display:block;font-size:20px;font-weight:600;line-height:1.35;overflow-wrap:anywhere}.word-tile .meaning{display:block;margin-top:7px;font-size:13px;color:var(--muted)}.word-tile .tile-meta{display:flex;justify-content:space-between;gap:8px;margin-top:18px;font-size:10px;color:var(--muted)}.word-tile .status-practiced{color:var(--green)}.empty{padding:32px;border:1px dashed var(--line);border-radius:14px;text-align:center;color:var(--muted)}.scenario-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:11px;margin-top:6px}.simulation{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:22px 0}.simulation-toolbar{padding:12px 17px;background:#edf1f7;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted)}.window-dots{display:flex;gap:5px}.window-dots i{width:6px;height:6px;border-radius:50%;background:#abb9c9}.simulation-body{padding:24px;background:#fafcff}.scenario-context{background:white;border:1px solid var(--line);padding:18px;border-radius:8px;margin-bottom:20px;font-size:13px;color:#60718a}.scenario-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.scenario-options .choice{font-size:17px;min-height:62px}.hint-text{font-size:12px;color:var(--muted);display:block;margin-top:5px}.route-intro{background:var(--blue);color:white;border-radius:16px;padding:25px 28px;margin-bottom:23px}.route-intro h2{font-size:21px}.route-intro p{font-size:13px;color:#d3deed;margin-top:10px;line-height:1.9}.route-list{display:grid;gap:13px}.route-card{display:grid;grid-template-columns:42px 1fr auto;gap:16px;border:1px solid var(--line);border-radius:13px;padding:22px;background:white;align-items:start}.route-number{width:34px;height:34px;border-radius:9px;background:#eaf1fc;color:var(--accent);display:grid;place-items:center;font:13px ui-monospace,monospace}.route-card p{font-size:13px;color:var(--muted);margin-top:6px}.route-tags{font-size:11px;color:var(--accent);margin-top:9px}.software-table{margin-top:26px;background:white;border:1px solid var(--line);border-radius:14px;padding:22px}.software-row{display:grid;grid-template-columns:155px 1fr;gap:16px;padding:15px 0;border-bottom:1px solid #edf0f5;font-size:12px}.software-row:last-child{border:0}.software-row strong{font-size:13px}.software-row p{color:var(--muted)}.software-row small{display:block;color:var(--accent);margin-top:5px}.section-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.8}dialog{border:1px solid var(--line);border-radius:18px;padding:30px;width:min(640px,calc(100% - 32px));max-height:88vh;color:var(--ink);box-shadow:0 20px 80px #102a3a33}dialog::backdrop{background:#192c4775}dialog h2{margin-bottom:15px}dialog p{font-size:14px;margin:12px 0;line-height:1.9}dialog .japanese-word{font-size:38px}dialog .word-meaning{font-size:22px}.dialog-close{margin-top:24px;float:right}.source-link{font-size:12px;display:block;margin:9px 0;overflow-wrap:anywhere}.source-item{padding:14px 0;border-bottom:1px solid var(--line)}.source-item small{display:block;color:var(--muted);margin-top:4px}.source-item p{font-size:12px;margin:4px 0}.record-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}.record-stats>div{background:var(--bg);border-radius:9px;padding:14px;text-align:center}.record-stats strong{display:block;font-size:25px}.record-stats span{font-size:11px;color:var(--muted)}.record-actions{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.file-label{cursor:pointer}.record-import{position:absolute;width:1px;height:1px;clip-path:inset(50%)}#toast{position:fixed;left:50%;bottom:25px;transform:translateX(-50%);max-width:calc(100% - 32px);width:max-content;background:var(--ink);color:white;font-size:13px;line-height:1.7;padding:12px 20px;border-radius:10px;box-shadow:0 8px 25px #132d3f22;opacity:0;pointer-events:none;z-index:20}#toast.show{opacity:1}.skip-link{position:fixed;top:-100px;left:12px;padding:12px;background:white;z-index:99}.skip-link:focus{top:10px}.visually-hidden{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}.inline-label{font-size:11px;display:block;color:var(--muted);margin-bottom:4px}.source-summary{cursor:pointer;font-size:12px;color:var(--muted)}.source-details{margin-top:18px}.detail-example{background:var(--bg);padding:17px;border-radius:10px;margin-top:18px}.detail-example p{margin:5px 0}.pill{display:inline-block;font-size:10px;border:1px solid var(--line);padding:3px 8px;border-radius:5px;color:var(--muted)}.result-count{font-size:12px;color:var(--muted);margin:4px 0 14px}.display-inline{display:inline-flex}.muted{color:var(--muted)}
@media(min-width:1001px){.topbar{height:76px}.shell{padding-top:24px}.page-head{margin-bottom:16px}.lesson-strip{margin-bottom:15px}.card-top{padding:14px 28px}.word-body{padding:20px 30px 18px}.japanese-word{font-size:52px}.word-meaning{font-size:22px;margin-top:7px}.word-explanation{font-size:13px;margin-top:5px}.example-box{padding:12px 17px;margin:0 30px 15px}.example-en{font-size:17px;margin-top:6px}.example-zh{font-size:12px;margin-top:2px}.apps{margin:0 30px 15px}.contrast{margin:0 30px 17px}.card-bottom{padding:14px 25px}.below-note{padding-top:13px}}
@media(max-width:1000px){.shell{gap:24px;grid-template-columns:180px minmax(0,1fr);padding-left:22px;padding-right:22px}.nav-button{padding:12px 10px;gap:10px}.word-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.page-head{flex-wrap:wrap}.japanese-word{font-size:50px}.word-body{padding:28px}.example-box,.apps{margin-left:28px;margin-right:28px}.contrast{margin-left:28px;margin-right:28px}.speaker-button{padding:9px 12px}.quiz-content{padding:25px}.word-body{grid-template-columns:1fr}.word-body .speaker-button{justify-self:start}.route-card{grid-template-columns:34px 1fr}.route-card .secondary-button{grid-column:2;justify-self:start}}
@media(max-width:700px){.topbar{height:76px;padding:0 18px}.brand{font-size:17px;gap:10px}.brand-mark{width:39px;height:39px;font-size:22px}.brand small{font-size:10px;letter-spacing:.3px}.topbar .quiet-button{padding:8px 12px;font-size:11px}.shell{display:block;padding:0 16px 26px}.sidebar{padding:0;margin:0 -16px 23px;border-bottom:1px solid var(--line);background:white}.sidebar .eyebrow,.sidebar-note,.sidebar-progress{display:none}#navigation{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:0 8px}.nav-button{border-radius:0;border:none;border-bottom:3px solid transparent;justify-content:center;padding:14px 3px 11px;margin:0;font-size:11px;white-space:nowrap;font-weight:600}.nav-button span{display:none}.nav-button.active{border-color:var(--accent);background:white;color:var(--accent)}h1{font-size:24px}.page-head{gap:14px;margin-bottom:17px}.page-head p{font-size:12px;margin-top:6px}.page-kicker{font-size:10px;margin-top:0;margin-bottom:7px}.lesson-picker{font-size:11px;max-width:100%;min-height:39px}.lesson-strip{gap:6px;margin-bottom:15px}.word-chip{padding:5px 10px;font-size:11px}.card-top{padding:16px 19px;font-size:11px}.word-body{padding:24px 22px 19px;gap:16px;display:flex;flex-wrap:wrap;justify-content:space-between}.word-body>div{width:100%}.japanese-word{font-size:48px;letter-spacing:-1px}.word-meaning{font-size:22px;margin-top:10px}.word-explanation{font-size:13px;margin-top:8px}.speaker-button{font-size:11px;padding:8px 13px}.example-box{margin:0 22px 20px;padding:15px}.example-label{font-size:9px}.example-en{font-size:16px}.example-zh{font-size:12px}.apps{margin:0 22px 18px}.app-tag{font-size:9px}.contrast{margin:0 22px 21px;font-size:11px}.card-bottom{padding:16px 20px;gap:12px}.primary-button{font-size:13px;padding:10px 17px}.below-note{font-size:11px;padding:15px 1px}.quiz-content{padding:22px 20px}.quiz-term{font-size:34px}.choice-grid{grid-template-columns:1fr}.choice{font-size:15px;padding:13px;min-height:56px}.quiz-actions{margin-top:20px}.library-controls{grid-template-columns:1fr}.word-grid{gap:10px}.word-tile{padding:17px 13px;min-height:138px}.word-tile .term{font-size:18px}.word-tile .meaning{font-size:12px}.word-tile .tile-meta{font-size:9px}.filter-chips{gap:6px}.filter-chip{padding:6px 10px;font-size:11px}.scenario-options{grid-template-columns:1fr 1fr;gap:8px}.scenario-options .choice{font-size:14px;padding:10px;gap:8px;overflow-wrap:anywhere}.simulation-body{padding:16px}.simulation-toolbar{padding:11px 14px;font-size:10px}.scenario-context{font-size:12px;padding:14px}.simulation{margin:18px 0}.route-intro{padding:22px}.route-intro h2{font-size:19px}.route-intro p{font-size:12px}.route-card{padding:19px 16px;gap:12px}.route-card h3{font-size:15px}.route-card p{font-size:12px}.software-table{padding:20px 17px}.software-row{grid-template-columns:1fr;gap:5px}.software-row small{display:inline;margin-left:8px}.review-banner{font-size:12px;flex-wrap:wrap}footer{padding:0 16px 22px;flex-wrap:wrap;font-size:10px}footer .text-button{font-size:10px}.complete{padding:30px 22px}.complete h2{font-size:22px}.complete p{font-size:13px}dialog{padding:23px}.record-stats{gap:8px}.record-stats>div{padding:12px 7px}}
.dialog-close{position:sticky;top:0;margin:0 0 10px 14px;z-index:3;float:right;background:white;box-shadow:0 1px 6px #163a6510}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}


:root{--bg:#f5f4ee;--ink:#253e37;--muted:#69766e;--blue:#315449;--accent:#597d61;--orange:#c68b57;--line:#dce2d8}
body{font-family:"Segoe UI","Microsoft YaHei","Yu Gothic","Meiryo",sans-serif;background:var(--bg)}
[lang="ja"]{font-family:"Yu Gothic","Meiryo","Noto Sans JP",sans-serif}
.brand-mark{background:#315449}.brand-mark span{background:#cfab70}.nav-button.active{background:#e7eee4;border-color:#d8e2d3;color:#315449}.nav-button:hover{background:#eef1e9}
.speaker-button,.example-box{background:#f4f6ef;border-color:#e0e6d9}.speaker-button:hover{background:#e8eedf}.primary-button:hover{background:#254438}.word-chip.seen:not(.active){background:#e9efe3}
.japanese-word{font-size:46px;line-height:1.5;letter-spacing:.04em}.reading-line{display:flex;flex-wrap:wrap;gap:8px 16px;margin:5px 0 10px;font-size:15px;color:#566f5c}.romaji{color:#80877b;font-size:12px;align-self:center}.tile-reading{display:block;color:#7c8277;font-size:11px;margin-top:5px}
.word-meaning{margin-top:7px}.example-en{line-height:1.8;letter-spacing:.04em}.word-chip{font-size:13px}.feedback,.review-banner{background:#eef3e8;color:#315449;border-color:#dce6d3}.route-number,.complete-mark{background:#e5eddf}.simulation-toolbar{background:#e9eee3}.simulation-body{background:#f6f7f0}.window-dots i{background:#a9b6a0}.scenario-options .choice{font-family:"Yu Gothic","Meiryo",sans-serif}
.kana-intro{background:white;padding:22px 26px;border:1px solid var(--line);border-radius:14px;margin:0 0 20px}.kana-intro h2{font-size:18px;margin-bottom:8px}.kana-intro p{font-size:14px;margin:8px 0;color:var(--muted);line-height:1.9}.kana-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:20px 0}.kana-cell{border:1px solid var(--line);background:white;border-radius:10px;padding:13px;display:grid;gap:4px;justify-items:center;min-height:110px}.kana-cell:hover{background:#eaf0e3;border-color:var(--accent)}.kana-cell strong{font-size:29px;color:var(--blue);font-weight:500}.kana-cell>span{font-size:19px;color:var(--muted)}.kana-cell small{font-size:11px;color:#7e8679}
@media(min-width:1001px){.word-body{padding:22px 30px 14px}.japanese-word{font-size:46px}}
@media(max-width:700px){#navigation{grid-template-columns:repeat(5,1fr)}.nav-button{font-size:11px;padding:13px 2px}.japanese-word{font-size:clamp(25px,7.5vw,38px);letter-spacing:.02em}.reading-line{font-size:14px}.romaji{font-size:11px}.card-bottom{flex-wrap:wrap}.card-bottom .primary-button{margin-left:auto}.word-body{padding:20px}.kana-grid{gap:6px}.kana-cell{padding:8px 3px;min-height:94px}.kana-cell strong{font-size:25px}.kana-cell>span{font-size:17px}.kana-intro{padding:19px}.scenario-options{grid-template-columns:1fr}.lesson-picker{max-width:100%}.quiz-term{font-size:30px}}

.example-reading{font-size:12px;color:#77816f;margin-top:3px;line-height:1.7}

/* Expanded library and course navigation */
.library-controls{display:grid;grid-template-columns:minmax(230px,2fr) repeat(3,minmax(130px,1fr));gap:12px;align-items:end}
.library-controls label{min-width:0}.library-controls label>span{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.library-controls .lesson-picker,.library-controls .search-input{width:100%;max-width:100%;min-width:0}
.priority-tag{font-size:11px;font-weight:600;color:#315449;background:#e7edde;border-radius:6px;padding:4px 8px}
.tile-topic{display:block;font-size:11px;line-height:1.7;color:#718067;margin-top:8px}
.load-more{text-align:center;margin:24px 0}.priority-guide{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:24px}
.priority-guide>div{background:#eef2e7;border:1px solid #dfe6d7;border-radius:12px;padding:16px}.priority-guide strong{font-size:14px;color:#315449}.priority-guide p{font-size:12px;color:var(--muted);margin:7px 0 0;line-height:1.7}
.route-content{min-width:0;flex:1}.course-list{margin-top:12px}.course-list summary{font-size:13px;cursor:pointer;color:#315449}
.course-link{display:flex;justify-content:space-between;gap:10px;text-align:left;border:0;border-bottom:1px solid var(--line);background:transparent;padding:13px 0;width:100%;font-size:13px;line-height:1.7}
.course-link small{color:var(--muted);white-space:nowrap}.course-link:hover{color:#315449;background:#f5f7f0}
@media(max-width:1100px){.library-controls{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.library-controls{grid-template-columns:1fr 1fr;gap:10px}.library-controls .search-label{grid-column:1/-1}.priority-guide{grid-template-columns:1fr;gap:8px}.priority-guide>div{padding:12px 16px}.priority-guide p{margin-top:4px}.course-link{display:block}.course-link small{display:block;white-space:normal}.route-card{align-items:start}.route-content{width:100%}.tile-meta{gap:8px;flex-wrap:wrap}}
/* Mobile learning, beginner steps and audio controls */
:root{
  --safe-top:env(safe-area-inset-top,0px);
  --safe-right:env(safe-area-inset-right,0px);
  --safe-bottom:env(safe-area-inset-bottom,0px);
  --safe-left:env(safe-area-inset-left,0px);
}
html{min-height:100%;scroll-padding-block:20px}
body{min-height:100vh;min-height:100dvh}
button{min-width:44px;min-height:44px}
.secondary-button,.quiet-button,.text-button,.word-chip,.filter-chip,.lesson-picker{min-height:44px}
.text-button{padding:10px 4px}
.speaker-button{min-height:48px;font-size:14px;justify-content:center}
.search-input{min-height:46px}
summary{min-height:44px;padding:10px 0;line-height:1.7;touch-action:manipulation}
.source-link{min-height:44px;padding:10px 0;margin:4px 0}
.brand{min-height:44px;min-width:0}
.topbar{
  height:auto;
  min-height:calc(76px + var(--safe-top));
  padding-top:var(--safe-top);
  padding-left:max(28px,var(--safe-left),calc((100vw - 1264px)/2));
  padding-right:max(28px,var(--safe-right),calc((100vw - 1264px)/2));
}
.shell{padding-left:max(28px,var(--safe-left));padding-right:max(28px,var(--safe-right))}
footer{padding-left:max(28px,var(--safe-left));padding-right:max(28px,var(--safe-right));padding-bottom:calc(24px + var(--safe-bottom));align-items:center}
main{scroll-margin-top:16px}
dialog{
  width:min(640px,calc(100% - 32px - var(--safe-left) - var(--safe-right)));
  max-height:calc(100vh - 32px - var(--safe-top) - var(--safe-bottom));
  max-height:calc(100dvh - 32px - var(--safe-top) - var(--safe-bottom));
  margin:auto;
  overflow-y:auto;
  overscroll-behavior:contain;
  -webkit-overflow-scrolling:touch;
}
.dialog-close{min-width:64px;min-height:44px}
#toast{
  bottom:calc(20px + var(--safe-bottom));
  max-width:calc(100% - 32px - var(--safe-left) - var(--safe-right));
}
.beginner-home{display:grid;gap:20px;max-width:900px;margin:0 auto}
.beginner-home .page-head{margin-bottom:0}
.beginner-home>p{font-size:15px;line-height:1.9;color:var(--muted)}
.beginner-home .beginner-choices{margin:0}
.beginner-unit{
  display:flex;
  flex-direction:column;
  gap:20px;
  min-width:0;
  min-height:min(660px,calc(100vh - 220px));
  min-height:min(660px,calc(100dvh - 220px));
  padding:28px 30px;
  border:1px solid var(--line);
  border-radius:18px;
  background:white;
  box-shadow:0 7px 26px #17325706;
}
.beginner-unit h2{font-size:clamp(22px,3vw,28px);line-height:1.5}
.beginner-unit>p{font-size:16px;line-height:1.9;max-width:52em}
.beginner-unit .section-note{font-size:13px;line-height:1.8}
.beginner-unit>.feedback{margin-top:0}
progress.beginner-progress{
  display:block;
  width:100%;
  height:6px;
  min-height:6px;
  flex:0 0 6px;
  margin:0;
  padding:0;
  border:0;
  border-radius:0;
  overflow:hidden;
  appearance:none;
  -webkit-appearance:none;
  background:#e9eee3;
  color:var(--accent);
  accent-color:var(--accent);
}
progress.beginner-progress::-webkit-progress-bar{background:#e9eee3;border-radius:0}
progress.beginner-progress::-webkit-progress-value{background:var(--accent);border-radius:0}
progress.beginner-progress::-moz-progress-bar{background:var(--accent);border-radius:0}
.beginner-example{
  min-width:0;
  padding:20px 22px;
  background:#f4f6ef;
  border:1px solid #e0e6d9;
  border-left:3px solid #8ca383;
  border-radius:12px;
}
.beginner-example>p{margin:8px 0;font-size:15px;line-height:1.85}
.beginner-example>p:first-child{margin-top:0}
.beginner-example>p:last-child{margin-bottom:0}
.beginner-example>[lang="ja"]{font-size:clamp(24px,5vw,36px);line-height:1.65;letter-spacing:.03em;overflow-wrap:anywhere}
.beginner-example .reading-line{font-size:15px;line-height:1.7}
.beginner-example .example-reading{font-size:14px;line-height:1.7;color:var(--muted)}
.beginner-example .example-zh{font-size:15px}
.beginner-example .audio-controls{margin-top:16px}
.beginner-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:4px 0}
.beginner-choices>button,.beginner-choices>a{
  min-width:0;
  min-height:56px;
  width:100%;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:12px;
  background:white;
  color:var(--ink);
  font-size:15px;
  line-height:1.7;
  text-align:left;
  white-space:normal;
  overflow-wrap:anywhere;
}
.beginner-choices>button:hover:not(:disabled),.beginner-choices>a:hover{background:#f4f7ef;border-color:#96ac8c}
.beginner-choices>button.correct{background:#edf8f2;border-color:#53a880;color:#245b42}
.beginner-choices>button.wrong{background:#fdf1ed;border-color:#da9b91;color:#a34237}
.beginner-choices strong{display:block;font-size:16px;color:var(--blue)}
.beginner-choices small{display:block;font-size:12px;color:var(--muted);margin-top:4px}
.beginner-actions,.beginner-unit>.card-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-top:auto;
  padding:18px 0 0;
  border-top:1px solid var(--line);
}
.beginner-actions>button,.beginner-actions>a{min-height:48px}
.beginner-actions .primary-button{margin-left:auto}
.audio-controls{display:block;width:100%;max-width:360px;min-width:0}
.audio-buttons>button,.audio-buttons>a{
  display:inline-flex;
  justify-content:center;
  align-items:center;
  gap:8px;
  min-width:0;
  min-height:48px;
  padding:10px 12px;
  border:1px solid #dce5d5;
  border-radius:10px;
  background:#f4f6ef;
  color:#315449;
  font-size:14px;
  line-height:1.5;
  text-align:center;
  white-space:normal;
}
.audio-buttons>button:hover:not(:disabled){background:#e8eedf}
.audio-buttons>button[aria-pressed="true"],.audio-buttons>button.playing,.audio-buttons>button[data-state="playing"]{background:#e3ecdc;border-color:#789569;box-shadow:inset 0 0 0 1px #789569}
.audio-buttons>button[aria-busy="true"]{border-style:dashed}

.audio-status{display:block;min-height:1.7em;margin-top:8px;font-size:13px;line-height:1.7;color:#566f5c;overflow-wrap:anywhere}
.audio-status.error,.audio-status[data-state="error"]{color:#9b4335}
.audio-help{font-size:13px;color:var(--muted);line-height:1.8;margin-top:8px}
.audio-help p,.audio-help li{font-size:13px;line-height:1.8}
.audio-help p{margin:8px 0}
.audio-help ul,.audio-help ol{padding-left:22px;margin:8px 0}
.audio-help summary{cursor:pointer;color:#315449}
button.audio-help,a.audio-help{display:inline-flex;align-items:center;min-height:44px;padding:10px 4px;border:0;background:none;text-decoration:underline;text-underline-offset:4px}
.audio-status[hidden],.audio-help[hidden],.audio-controls[hidden]{display:none}
@media (hover:none) and (pointer:coarse){
  .lesson-picker,.search-input{font-size:16px}
  .quiet-button,.secondary-button{font-size:13px}
  .source-link{font-size:13px}
}
@media(max-width:700px){
  .topbar{padding-left:max(16px,var(--safe-left));padding-right:max(16px,var(--safe-right));gap:12px}
  .shell{padding-left:max(16px,var(--safe-left));padding-right:max(16px,var(--safe-right))}
  footer{padding-left:max(16px,var(--safe-left));padding-right:max(16px,var(--safe-right))}
  #navigation{grid-template-columns:repeat(5,minmax(0,1fr));padding:0 6px}
  .nav-button{min-width:0;min-height:48px;font-size:clamp(11px,2.85vw,13px);padding:11px 2px;line-height:1.6}
  .lesson-picker{min-height:46px}
  .word-chip{min-height:44px;padding:9px 12px}
  .speaker-button{min-height:48px;font-size:14px;padding:10px 14px}
  .quiet-button,.secondary-button,.text-button{min-height:44px}
  .card-top{flex-wrap:wrap}
  .quiz-actions{flex-wrap:wrap}
  .quiz-actions .primary-button{margin-left:auto}
  dialog{padding:20px}
  .beginner-home{gap:16px}
  .beginner-unit{gap:18px;padding:20px 18px;border-radius:15px;min-height:calc(100vh - 215px);min-height:calc(100dvh - 215px)}
  .beginner-unit>p{font-size:15px;line-height:1.85}

  .beginner-example{padding:16px}
  .beginner-example>[lang="ja"]{font-size:clamp(24px,7vw,32px)}
  .beginner-example .example-reading{font-size:14px}
  .beginner-choices{grid-template-columns:1fr;gap:10px}
  .beginner-choices>button,.beginner-choices>a{padding:13px 15px}
  .beginner-actions,.beginner-unit>.card-bottom{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;padding-top:16px}
  .beginner-actions>button,.beginner-actions>a,.beginner-unit>.card-bottom>button{width:100%;min-width:0;padding:11px 10px;font-size:14px}
  .beginner-actions .primary-button{margin-left:0}
  .audio-controls{max-width:100%;gap:10px}
  .audio-buttons>button,.audio-buttons>a{min-height:50px;font-size:14px}
}
@media(orientation:landscape) and (max-height:600px) and (max-width:1024px){
  .topbar{min-height:calc(62px + var(--safe-top));padding-left:max(20px,var(--safe-left));padding-right:max(20px,var(--safe-right))}
  .brand{font-size:17px}
  .brand-mark{width:38px;height:38px;font-size:22px}
  .shell{display:block;max-width:1024px;padding:0 max(20px,var(--safe-right)) 24px max(20px,var(--safe-left))}
  .sidebar{padding:0;margin:0 0 18px;background:white;border-bottom:1px solid var(--line)}
  .sidebar .eyebrow,.sidebar-note,.sidebar-progress{display:none}
  #navigation{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;padding:0 6px}
  .nav-button{justify-content:center;min-height:46px;margin:0;padding:10px 6px;border:0;border-bottom:3px solid transparent;border-radius:0;font-size:13px;white-space:nowrap}
  .nav-button span{display:none}
  .nav-button.active{border-bottom-color:var(--accent);background:#f4f6ef}
  .page-head{margin-bottom:16px}
  .beginner-unit{min-height:0;padding:22px 24px;gap:16px}
  .beginner-choices{grid-template-columns:repeat(2,minmax(0,1fr))}
  .audio-controls{max-width:420px}
  dialog{padding:18px 22px}
}
/* Align beginner and audio layout with the rendered components. */
.audio-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;min-width:0}
.audio-buttons>.speaker-button{width:100%;min-width:0}
.study-card.beginner-unit{padding:0;gap:0}
.beginner-unit>.card-top{flex:0 0 auto;padding:16px 26px;border-bottom:0;font-size:13px}
.beginner-unit>.quiz-content{
  display:flex;
  flex:1 1 auto;
  flex-direction:column;
  gap:18px;
  min-width:0;
  padding:24px 28px 26px;
}
.beginner-unit>.quiz-content>p{font-size:16px;line-height:1.85;max-width:52em}
.beginner-unit>.quiz-content>.section-note{font-size:13px;line-height:1.8}
.beginner-unit .beginner-actions{flex:0 0 auto;margin-top:auto}
.beginner-examples{display:grid;gap:14px;min-width:0}
.beginner-example .word-meaning{font-size:20px;line-height:1.65;margin:8px 0}
.beginner-example .reading-line{margin:8px 0}
.beginner-unit>.quiz-content>p.beginner-stimulus{font-size:clamp(24px,5vw,34px);line-height:1.7;color:var(--blue);overflow-wrap:anywhere}
.beginner-home{display:block;margin-bottom:22px}
.beginner-home>.quiz-content{display:flex;flex-direction:column;gap:16px;padding:26px 28px}
.beginner-home .pill{align-self:flex-start}
.beginner-home p{font-size:15px;line-height:1.85}
.beginner-home .beginner-actions{margin-top:4px}
.beginner-home+.route-list h2{font-size:18px;line-height:1.5}
.beginner-home~.kana-intro{margin-top:22px}
@media(max-width:700px){
  .study-card.beginner-unit{min-height:0}
  .beginner-unit>.card-top{padding:14px 18px;font-size:12px}
  .beginner-unit>.quiz-content{padding:20px 18px;gap:16px}
  .beginner-unit>.quiz-content>p{font-size:15px;line-height:1.85}
  .beginner-unit>.quiz-content>.section-note{font-size:13px}
  .beginner-example{padding:15px}
  .beginner-example .word-meaning{font-size:19px}
  .beginner-home>.quiz-content{padding:22px 20px;gap:14px}
  .beginner-home .beginner-actions{gap:10px}
  .beginner-home+.route-list h2{font-size:16px}
  .beginner-home .beginner-actions>button{font-size:13px;padding:11px 8px}
}
@media(orientation:landscape) and (max-height:600px) and (max-width:1024px){
  .study-card.beginner-unit{min-height:0}
  .beginner-unit>.card-top{padding:12px 24px}
  .beginner-unit>.quiz-content{padding:20px 24px;gap:16px}
}

body>.audio-help{max-width:1208px;margin:0 auto;padding:0 max(20px,var(--safe-left)) calc(20px + var(--safe-bottom));}

/* v0.4 private device entry */
.access-shell{width:min(100%,620px);margin:0 auto;padding:clamp(24px,6vh,72px) 24px max(28px,env(safe-area-inset-bottom));min-height:100dvh}
.access-shell>.brand{margin-bottom:28px;min-height:48px;width:fit-content}
.access-card{background:white;border:1px solid var(--line);border-radius:20px;padding:clamp(24px,5vw,38px);box-shadow:0 9px 36px #17325708}
.access-card h1{font-size:clamp(25px,5vw,32px);margin-bottom:15px}
.access-card p{overflow-wrap:anywhere}.access-card #access-note{font-size:16px;color:var(--muted);line-height:1.8}
.access-steps{display:grid;gap:20px;margin:26px 0;padding:22px;background:var(--bg);border-radius:12px;font-size:14px;color:var(--muted)}
.access-steps strong{color:var(--ink)}.access-error{color:var(--red);margin:14px 0;line-height:1.8}
.access-error:empty{display:none}.access-card [hidden]{display:none!important}.access-card>.section-note{font-size:13px}
.record-actions a{text-decoration:none}
@media(max-width:380px){.access-shell{padding-left:16px;padding-right:16px}.access-card{padding:22px 18px}.access-steps{padding:17px}}