:root{--ink:#20342f;--muted:#697a73;--green:#183a32;--green2:#2f5948;--cream:#f7f5ef;--paper:#fffefb;--line:#e4e8df;--gold:#d2a95a;--mint:#dce9df;--red:#b9534a;--shadow:0 16px 45px rgba(22,53,42,.07);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans CJK TC",sans-serif;color:var(--ink);background:var(--cream)}
*{box-sizing:border-box}body{margin:0}button,select,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,select:focus-visible,.upload:focus-within{outline:3px solid #e2b65c;outline-offset:3px}a{color:inherit}.shell{display:flex;min-height:100vh}.sidebar{position:sticky;top:0;align-self:flex-start;width:242px;min-width:242px;height:100vh;background:var(--green);color:#ecf3eb;padding:28px 18px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:11px;padding:3px 9px 30px}.brand-mark{font-family:Georgia,"Yu Mincho",serif;font-size:31px;display:grid;place-items:center;width:49px;height:49px;border:1px solid rgba(255,255,255,.55);border-radius:14px;color:#f0dca9}.brand strong{font-family:Georgia,serif;font-size:21px;letter-spacing:.01em;display:block}.brand small{display:block;font-size:11px;letter-spacing:.18em;color:#afc6ba;text-transform:uppercase}.sidebar-kicker{font-size:10px;letter-spacing:.2em;color:#a7bcb0;margin:10px 12px 18px}.sidebar nav{display:grid;gap:7px}.sidebar nav button{border:0;background:transparent;color:#cedbd0;text-align:left;padding:13px 15px;border-radius:10px;font-size:14px;font-weight:600}.sidebar nav button span{display:inline-block;width:25px;font-size:20px;font-weight:400;vertical-align:-2px}.sidebar nav button:hover,.sidebar nav button.active{background:#35594c;color:white}.sidebar-bottom{margin-top:auto;border-top:1px solid #446255;padding:22px 10px 3px;font-size:12px;color:#d4e1d5}.sidebar-bottom p{line-height:1.5;color:#a9bdaf;margin-bottom:0}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#a9d5a9;margin-right:6px}.main-wrap{flex:1;min-width:0}.topbar{height:73px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 clamp(22px,5vw,70px);background:#fcfcf9}.topbar-eyebrow{font-family:Georgia,"Yu Mincho",serif;font-size:13px;color:#587366;letter-spacing:.05em}.text-button{border:0;background:transparent;color:var(--green2);font-size:13px;font-weight:700}.text-button:hover,.inline-link:hover,.back:hover{text-decoration:underline}main{max-width:1200px;margin:0 auto;padding:42px clamp(22px,5vw,70px) 65px;min-height:calc(100vh - 125px);outline:none}footer{font-size:12px;color:#88928b;padding:16px clamp(22px,5vw,70px) 28px;text-align:center}.loading{padding:60px;text-align:center;color:var(--muted)}.eyebrow{font-size:10px;font-weight:800;letter-spacing:.22em;color:#648674;text-transform:uppercase;margin:0 0 8px}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:26px}.section-head h1{font-family:Georgia,"Yu Mincho",serif;font-size:clamp(28px,3.1vw,43px);line-height:1.2;margin:0 0 10px;letter-spacing:-.03em}.lead{color:var(--muted);line-height:1.7;margin:0;max-width:720px}.hero{background:linear-gradient(115deg,#1c4337,#28503d 64%,#315b46);color:#fff;border-radius:18px;display:flex;align-items:center;justify-content:space-between;min-height:284px;padding:38px 48px;overflow:hidden;position:relative;box-shadow:var(--shadow)}.hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(255,255,255,.1);border-radius:50%;right:-80px;top:-170px;box-shadow:0 0 0 50px rgba(255,255,255,.025),0 0 0 100px rgba(255,255,255,.02)}.hero>div{position:relative}.hero-tag{border:1px solid #b8d1b7;border-radius:30px;padding:7px 12px;color:#e4ecd9;font-size:11px;letter-spacing:.12em;font-weight:700}.hero h2{font-family:Georgia,"Yu Mincho",serif;font-size:clamp(27px,3vw,39px);font-weight:600;line-height:1.34;margin:22px 0 13px}.hero h2 em{font-style:normal;color:#e5c98c}.hero p{font-size:13px;color:#d3e2d8;line-height:1.6;margin:0 0 22px}.hero-actions,.button-row{display:flex;gap:10px;flex-wrap:wrap}.hero-kanji{font-family:Georgia,"Yu Mincho",serif;font-size:172px;line-height:1;color:rgba(255,255,255,.17);padding-right:52px}.hero-kanji span{display:block;text-align:center;font-size:15px;letter-spacing:.4em;color:#d4e1d4}.primary,.secondary{border:1px solid transparent;border-radius:9px;padding:11px 17px;font-weight:700;font-size:13px;min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:6px}.primary{background:#d8b66e;color:#1b332d}.primary:hover{background:#e5c987}.secondary{background:#fff;color:var(--green);border-color:#bdcdc1}.secondary:hover{background:#edf4ec}.secondary.light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}.secondary.light:hover{background:rgba(255,255,255,.1)}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin:21px 0}.stat{background:var(--paper);border:1px solid var(--line);border-radius:13px;padding:18px 20px;min-height:116px}.stat span,.stat small{display:block;font-size:12px;color:var(--muted)}.stat strong{font-family:Georgia,"Yu Mincho",serif;font-size:35px;line-height:1.2;display:block;color:var(--green);margin:5px 0}.stat strong small{display:inline;font-size:17px}.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:20px 0}.panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:26px;box-shadow:0 3px 13px rgba(24,58,50,.025)}.panel-top{display:flex;justify-content:space-between;gap:12px;align-items:start}.panel h2{font-family:Georgia,"Yu Mincho",serif;font-size:23px;margin:2px 0 12px}.panel p{color:var(--muted);line-height:1.7;font-size:13px}.pill{display:inline-block;background:#e9f0e8;border-radius:20px;color:#426956;padding:5px 10px;font-size:11px;font-weight:700;white-space:nowrap}.inline-link,.back{border:0;background:none;color:#245d48;font-weight:700;font-size:13px;padding:4px 0;text-align:left}.note{font-size:12px;color:#7f8981;line-height:1.6;margin:18px 0 0}.tabs{display:flex;gap:7px;border-bottom:1px solid var(--line);margin:4px 0 24px}.tabs button{padding:13px 20px;border:0;border-bottom:3px solid transparent;background:transparent;color:#76877d;font-size:16px;font-weight:800}.tabs button span{display:block;font-size:10px;font-weight:400}.tabs button.selected{color:var(--green);border-color:var(--gold)}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.course-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;min-height:171px;background:var(--paper);border:1px solid var(--line);border-radius:13px;padding:20px;text-align:left;color:var(--ink);transition:transform .15s,box-shadow .15s}.course-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.course-card.muted{background:#fafbf8}.course-num{font-size:11px;font-weight:800;letter-spacing:.14em;color:#55836d}.course-icon{position:absolute;right:20px;top:15px;font-family:Georgia,"Yu Mincho",serif;font-size:42px;color:#dde8dc}.course-card strong{font-family:Georgia,"Yu Mincho",serif;font-size:21px;margin:22px 0 6px;z-index:1}.course-card small{font-size:12px;line-height:1.55;color:var(--muted);z-index:1}.course-meta{font-size:11px;color:#649076;margin-top:auto;padding-top:12px}.back{display:block;margin:0 0 25px}.lesson-intro{display:flex;justify-content:space-between;gap:20px;background:#e9f0e7;border-radius:13px;padding:23px 26px;margin-bottom:34px}.lesson-intro ul{padding-left:20px;margin:8px 0 0;color:#486559;line-height:1.8;font-size:13px}.lesson-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.lesson-section{margin-top:35px}.section-label{display:flex;align-items:center;gap:11px;margin:0 0 18px}.section-label span{font-family:Georgia,serif;color:#b28d49;font-size:23px}.section-label h2{font-family:Georgia,"Yu Mincho",serif;font-size:24px;margin:0}.grammar-card{background:var(--paper);border:1px solid var(--line);border-radius:13px;margin:13px 0;padding:24px}.grammar-title{display:flex;justify-content:space-between;align-items:start}.grammar-title h3{font-size:22px;margin:11px 0 4px}.grammar-title strong{font-size:13px;color:#3f7657}.grammar-card>p{font-size:13px;line-height:1.7;color:#56675b}.grammar-card>p b{color:var(--ink)}.example-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:17px}.example{background:#f7f9f5;border-radius:9px;padding:14px;min-width:0}.example>div,.script-line>div{display:flex;align-items:start;justify-content:space-between;gap:4px}.example .jp,.script-line b{font-size:14px;line-height:1.5;color:#1b4132}.example small,.script-line small{display:block;font-size:11px;color:#8a9389;margin-top:5px}.example p,.script-line p{font-size:12px;margin:8px 0 0;color:#596e5b;line-height:1.5}.speak{flex:0 0 auto;border:0;background:#e8f0e7;color:#2d674e;border-radius:50%;width:27px;height:27px;display:grid;place-items:center;font-size:15px}.speak:hover{background:#c9e0ce}.favorite{border:0;background:none;color:#aebbae;font-size:23px;line-height:1}.favorite.on{color:#d6a848}.word-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.word-row{display:flex;align-items:center;gap:10px;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 14px;min-width:0}.word-row>div{min-width:100px}.word-row strong{display:block;font-size:16px}.word-row small{font-size:11px;color:#8a958c}.word-row>span{margin-left:auto;color:#617368;font-size:12px;text-align:right}.word-row .favorite{font-size:19px}.kanji-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.kanji-tile{display:flex;flex-direction:column;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:11px;padding:15px 8px}.kanji-tile strong{font-family:Georgia,"Yu Mincho",serif;font-size:37px}.kanji-tile span{color:#5b8069;font-size:11px}.kanji-tile small{color:var(--muted);font-size:11px;text-align:center}.script-line{border-top:1px solid var(--line);padding:13px 0}.script-line:first-of-type{border:0}.lesson-end{display:flex;align-items:center;justify-content:space-between;background:#e7eee5;border-radius:12px;margin-top:26px;padding:18px 22px;font-weight:700}.control-bar{display:flex;justify-content:space-between;gap:14px;align-items:center;margin:0 0 23px;flex-wrap:wrap}.control-bar label{font-size:12px;color:var(--muted);font-weight:700}.control-bar select{background:white;color:var(--ink);border:1px solid #cbd9cc;border-radius:9px;padding:11px 13px;margin-left:8px;max-width:270px}.segmented{display:flex;border:1px solid #cbd9cc;border-radius:9px;overflow:hidden}.segmented button{border:0;background:white;padding:10px 16px;color:#60776a;font-size:12px;font-weight:700}.segmented button.selected{background:var(--green);color:#fff}.review-progress{display:flex;justify-content:space-between;max-width:680px;margin:auto auto 11px;color:var(--muted);font-size:12px}.review-card{position:relative;max-width:680px;min-height:290px;background:var(--paper);border:1px solid var(--line);border-radius:19px;box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;margin:auto;padding:40px}.review-card h2{font-family:Georgia,"Yu Mincho",serif;font-size:clamp(30px,4vw,48px);margin:12px 0}.review-card .speak{margin-top:10px}.card-answer{border-top:1px solid var(--line);width:100%;padding-top:23px;margin-top:22px;display:flex;justify-content:center;align-items:center;gap:12px;color:#2e7052;font-size:18px}.card-favorite{position:absolute;right:20px;top:18px}.reveal{display:flex;margin:24px auto;min-width:200px}.grade-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-width:680px;margin:18px auto}.grade-grid button{border:1px solid var(--line);border-radius:10px;padding:14px 6px;background:white;color:var(--green)}.grade-grid button:first-child{color:var(--red)}.grade-grid button:hover{background:#e7f0e7}.grade-grid strong,.grade-grid small{display:block}.grade-grid small{color:var(--muted);font-size:10px;margin-top:3px}.empty-state{text-align:center;padding:56px 28px}.empty-symbol{font-size:46px;color:#4c8a60}.quiz-progress{max-width:760px;margin:0 auto 17px;font-size:12px;color:var(--muted)}.quiz-progress>div{height:5px;background:#e2e9dd;border-radius:5px;margin-top:9px}.quiz-progress i{height:5px;background:#7fad83;display:block;border-radius:5px}.quiz-panel{max-width:760px;margin:auto}.quiz-panel h2{line-height:1.5;margin:21px 0 25px;font-size:23px}.options{display:grid;gap:10px}.options button{display:flex;gap:13px;align-items:center;text-align:left;border:1px solid #d8e2d8;border-radius:10px;background:white;padding:12px 15px;font-size:14px}.options button span{display:grid;place-items:center;width:25px;height:25px;border-radius:6px;background:#edf3ed;color:#40684c;font-size:12px;font-weight:800}.options button:not(:disabled):hover{border-color:#8db59b;background:#f4faf4}.options button.right{background:#e7f4e9;border-color:#63a877}.options button.wrong{background:#fbe9e6;border-color:#d9948d}.feedback{padding:19px;border-radius:10px;margin-top:21px;background:#eef7ee}.feedback.bad{background:#fff0ed}.feedback p{margin:6px 0 12px}.feedback .inline-link{display:block;margin-bottom:13px}.result{text-align:center;margin:22px auto;max-width:600px}.result h2{font-size:45px;color:var(--green)}.result-list{display:grid;gap:9px}.result-row{border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:15px 17px;font-size:13px}.result-row b{display:inline-block;max-width:calc(100% - 80px);line-height:1.6}.result-row span{float:right;font-weight:700}.result-row .correct{color:#39854f}.result-row .incorrect{color:#be6158}.result-row p{margin:7px 0;color:#526759}.result-row small{color:#7a887e}.result-row .inline-link{display:block;margin-top:7px}.upload{cursor:pointer}.small-muted,.empty-copy{font-size:12px!important;color:#87958a!important}.history-list{display:grid;gap:7px}.history-item{border:1px solid var(--line);border-radius:9px;background:white;text-align:left;padding:13px 16px;display:flex;gap:13px;align-items:center}.history-item b{margin-right:auto}.history-item span{font-weight:800;color:#3b7455}.history-item small{color:var(--muted)}.history-item:hover{border-color:#82aa87}.favorite-list{display:flex;gap:8px;flex-wrap:wrap}.favorite-chip{background:white;border:1px solid var(--line);border-radius:20px;padding:8px 13px;color:var(--green)}.favorite-chip:hover{background:#eaf3e9}#toast{position:fixed;bottom:20px;right:20px;z-index:20;background:#193d30;color:white;border-radius:10px;padding:12px 17px;box-shadow:var(--shadow);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .2s,transform .2s;max-width:min(90vw,380px);font-size:13px}#toast.show{opacity:1;transform:translateY(0)}
@media(max-width:1050px){.sidebar{width:205px;min-width:205px}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.example-list{grid-template-columns:1fr}.hero-kanji{font-size:120px;padding-right:0}}
@media(max-width:760px){.shell{display:block}.sidebar{position:sticky;top:0;z-index:10;width:100%;height:auto;min-width:0;padding:8px 12px;display:block}.brand{padding:3px 5px 8px}.brand-mark{height:35px;width:35px;font-size:22px;border-radius:9px}.brand strong{font-size:16px}.brand small{font-size:9px}.sidebar-kicker,.sidebar-bottom{display:none}.sidebar nav{display:flex;overflow-x:auto;gap:4px;scrollbar-width:none}.sidebar nav button{white-space:nowrap;font-size:11px;padding:9px 10px}.sidebar nav button span{display:none}.topbar{height:45px;padding:0 20px}.topbar-eyebrow{font-size:11px}.text-button{font-size:11px}main{padding:26px 18px 50px;min-height:70vh}.section-head{margin-bottom:20px}.lead{font-size:13px}.hero{padding:26px;min-height:250px}.hero-kanji{display:none}.hero h2{margin-top:20px}.stat-grid{grid-template-columns:repeat(2,1fr);gap:9px}.stat{padding:13px;min-height:97px}.stat strong{font-size:28px}.two-cols{grid-template-columns:1fr}.course-grid{grid-template-columns:1fr 1fr;gap:9px}.course-card{padding:14px;min-height:155px}.course-card strong{font-size:17px;margin-top:22px}.course-icon{font-size:31px;right:12px}.course-card small{font-size:11px}.lesson-intro{display:block;padding:19px}.lesson-actions{margin-top:15px}.word-grid{grid-template-columns:1fr}.kanji-grid{grid-template-columns:repeat(5,1fr);gap:5px}.kanji-tile strong{font-size:30px}.kanji-tile small{font-size:9px}.grade-grid{grid-template-columns:repeat(2,1fr)}.review-card{min-height:250px}.history-item{flex-wrap:wrap}.history-item small{width:100%}}
@media(max-width:420px){.course-grid{grid-template-columns:1fr}.course-card{min-height:135px}.course-card strong{margin-top:13px}.kanji-grid{grid-template-columns:repeat(3,1fr)}.hero-actions .secondary{display:none}.panel{padding:19px}.tabs button{padding:11px 16px}.control-bar select{max-width:230px}.lesson-end{gap:10px}.lesson-end span{font-size:12px}}
.voice-controls{display:flex;align-items:center;gap:8px}.voice-controls label{font-size:12px;color:#587366;font-weight:700;white-space:nowrap}.voice-controls select{max-width:225px;min-width:130px;padding:7px 9px;border:1px solid #cbd9cc;border-radius:8px;color:var(--green);background:white;font-size:12px}
@media(max-width:760px){.voice-controls label{display:none}.voice-controls select{max-width:145px;min-width:95px;font-size:11px}}
@media(max-width:420px){.topbar-eyebrow{display:none}.voice-controls{margin-left:auto}}