@charset "UTF-8";
:root{--bg:#f8f8f4;--paper:#fff;--ink:#273c34;--muted:#727b73;--line:#e2e6df;--green:#355c49;--en:#517083;--en-bg:#eff4f7;--ja:#98765b;--ja-bg:#faf2e9;font-family:Inter,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none;line-height:1.6;font-size:15px}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,select,input,summary{-webkit-tap-highlight-color:transparent}button,select,summary{cursor:pointer}button{color:inherit}button{border:0;background:none}a,button,input,select,summary{touch-action:manipulation}button:disabled{cursor:default;opacity:.4}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #779785;outline-offset:4px}button:not(:disabled):hover,.primary:hover{filter:brightness(.96)}h1,h2,h3,p{margin:0}h1{font-size:40px;line-height:1.45;letter-spacing:-1px;font-weight:650}h2{font-size:23px;line-height:1.5;font-weight:650}h3{font-size:20px}p{color:var(--muted)}[hidden]{display:none!important}.site-header{max-width:1168px;margin:auto;padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:23px;font-weight:700;white-space:nowrap}.brand-symbol{display:grid;place-items:center;width:37px;height:37px;border-radius:11px;background:var(--green);color:#fff;font-size:23px;font-weight:400}.brand small{font-size:11px;font-weight:400;color:var(--muted);margin-left:5px;letter-spacing:1px}nav{display:flex;gap:8px}nav a{font-size:14px;padding:10px 16px;border-radius:9px;color:#657068;white-space:nowrap}nav a[aria-current]{background:#e9eee6;color:var(--green);font-weight:600}nav a:hover{background:#eef0ea}main{max-width:1104px;margin:auto;padding:48px 32px 72px}main:focus{outline:none}.intro{margin:0 0 32px}.eyebrow{font-size:12px;font-weight:600;letter-spacing:1.5px;color:var(--muted)}.intro h1{margin:14px 0}.intro p{font-size:15px;line-height:1.9}.notice{padding:20px 24px;border:1px solid #dfe6d7;border-radius:14px;background:#eff3e9;font-size:14px;margin-bottom:26px}.placement-prompt{display:flex;align-items:center;justify-content:space-between;gap:16px}.placement-prompt strong{font-size:16px}.placement-prompt p{font-size:13px;margin-top:4px}.placement-prompt>span{white-space:nowrap;color:var(--green);font-weight:600}.home-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:24px}.continue-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px 34px;position:relative;display:block;box-shadow:0 5px 18px #26382d03}.continue-card .topic-label{float:right;font-size:12px;color:var(--muted)}.continue-card h2{font-size:30px;margin:25px 0 10px}.continue-card p{font-size:17px;line-height:1.9}.continue-card p[lang=ja]{font-size:15px}.primary{background:var(--green);color:#fff;padding:12px 22px;border-radius:10px;min-height:46px;font-weight:600;font-size:14px;display:inline-flex;align-items:center;justify-content:center;gap:20px}.link-button{margin-top:23px}.continue-card .link-button{display:flex;width:160px;justify-content:space-between}.level-stack{display:grid;gap:16px}.level-card{padding:23px 28px;border:1px solid var(--line);border-radius:17px;display:flex;flex-direction:column;gap:5px}.en{--accent:var(--en);--tint:var(--en-bg)}.ja{--accent:var(--ja);--tint:var(--ja-bg)}.level-card.en{background:var(--en-bg);border-color:#e2e9ed}.level-card.ja{background:var(--ja-bg);border-color:#eee5da}.level-card .eyebrow{color:var(--accent)}.level-card strong{font-size:23px;font-weight:600}.level-card>span:last-child{font-size:12px;color:var(--muted)}.recommendation{display:flex;gap:18px;align-items:center;padding:27px 2px;margin:12px 0 23px}.recommendation strong{font-size:14px;font-weight:600}.recommendation p{font-size:13px;margin-top:5px}.small-icon{font-size:32px;color:#8a9b75}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.section-heading>span:not(.language-name){font-size:12px;color:var(--muted)}.section-heading>a{font-size:13px}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.topic-card{padding:26px;background:#fff;border:1px solid var(--line);border-radius:16px}.topic-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:#f0f2eb;color:#7a886a;font-size:18px;margin-bottom:20px}.topic-card:nth-child(2) .topic-icon{background:#f8f0e6;color:#9c805e}.topic-card:nth-child(3) .topic-icon{background:#ecf0f3;color:#708798}.topic-card h3{margin-bottom:8px}.topic-card h3>span{float:right;color:#9ba695;font-weight:400}.topic-card>p{font-size:12px}.topic-foot{display:flex;justify-content:space-between;gap:8px;border-top:1px solid var(--line);margin-top:22px;padding-top:16px;font-size:11px;color:var(--muted)}a.topic-card:hover{border-color:#b6c5b4}footer{max-width:1040px;margin:auto;border-top:1px solid var(--line);padding:25px 0 35px;display:flex;justify-content:space-between;gap:16px;font-size:11px;color:#889084}.page-intro{margin-bottom:28px}.page-intro h1{margin:9px 0 12px}.page-intro p{max-width:680px}.progress-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:28px 0 44px}.panel{background:#fff;padding:30px;border:1px solid var(--line);border-radius:18px}.panel>.eyebrow{color:var(--accent)}.panel h2{margin:10px 0}.panel p{font-size:14px;margin:14px 0;line-height:1.9}.panel .primary{margin-top:12px}.big-number{font-size:53px;font-weight:500;color:var(--accent)}.big-number small{font-size:23px}.meter{height:6px;border-radius:10px;background:#e8ece6;overflow:hidden}.meter>span{display:block;height:100%;background:var(--accent,var(--green));border-radius:10px}.panel .meter{margin:16px 0}.topic-progress{margin:22px 0}.topic-progress>div:first-child{display:flex;justify-content:space-between;font-size:12px;margin-bottom:10px;color:var(--accent)}.text-link{font-size:13px;color:var(--green);display:inline-block;padding:10px 0}.review-section{margin-top:28px}.review-list a{display:flex;justify-content:space-between;align-items:center;gap:14px;border-top:1px solid var(--line);padding:16px 0}.review-list small{color:var(--muted)}.result-note{padding:28px;text-align:center;background:#edf1e8;border-radius:18px}.result-note p{margin-top:12px}.learning-top{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:30px}.learning-top h1{font-size:28px;margin-top:7px}.learning-top label{font-size:11px;color:var(--muted);display:flex;flex-direction:column;gap:6px}select{max-width:100%;border:1px solid var(--line);border-radius:9px;padding:10px 35px 10px 13px;background:#fff;color:var(--ink);min-height:44px}.concept-selector{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--muted)}.concept-selector select{min-width:0;width:280px}.concept-selector>span{margin-left:auto;white-space:nowrap}.meaning{text-align:center;padding:39px 0}.meaning h2{font-size:35px;margin:13px 0 9px}.meaning p{font-size:12px}.dot{padding:0 9px;color:#b8bfb2}.language-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.language-panel{min-width:0;background:#fff;border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:16px;padding:26px;display:flex;flex-direction:column}.language-panel .section-heading{margin-bottom:20px}.language-name{font-weight:600;color:var(--accent);font-size:16px;letter-spacing:.5px}.difficulty{font-size:10px!important;background:var(--tint);padding:4px 8px;border-radius:6px;white-space:nowrap;color:var(--accent)!important}.expression{font-size:27px;font-weight:500;line-height:1.9;min-height:100px;display:flex;align-items:center;overflow-wrap:anywhere}.expression[lang=ja]{font-size:25px}ruby{ruby-align:center}rt{font-size:.48em;font-weight:400;color:var(--muted)}.ipa{font-size:13px;color:var(--en);margin:12px 0 23px}.ipa summary{min-height:32px;padding:4px 0}.ipa p{font-size:16px;padding:8px 0;overflow-wrap:anywhere}.reading-toggle{display:flex;align-items:center;gap:8px;color:var(--ja);font-size:13px;margin:12px 0 23px;min-height:32px;cursor:pointer}.reading-toggle input{accent-color:var(--ja);width:17px;height:17px}.grammar-area{border-top:1px solid var(--line);padding-top:17px;margin-bottom:27px}.grammar-area .section-heading{margin-bottom:12px}.subtle{font-size:12px;padding:10px 5px;min-height:40px;text-decoration:underline;text-underline-offset:4px}.chunks{display:flex;flex-wrap:wrap;gap:8px}.chunk{padding:8px 12px;background:var(--tint);color:var(--accent);border:1px solid transparent;border-radius:8px;font-size:16px;min-height:44px;max-width:100%;overflow-wrap:anywhere}.chunk:hover{border-color:var(--accent)}.mastery{border-top:1px solid var(--line);padding-top:20px;margin-top:auto}.mastery>span{font-size:12px;color:var(--muted)}.mastery-buttons{display:flex;gap:12px;margin-top:12px}.mastery-buttons button{flex:1;border:1px solid var(--line);border-radius:9px;padding:10px 8px;font-size:13px;min-height:44px}.mastery-buttons button.selected{border-color:var(--accent);background:var(--tint);color:var(--accent)}.comparison{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;text-align:left;background:#edf1e8;border:1px solid #dfe6d8;padding:22px 26px;border-radius:13px;margin:24px 0}.comparison strong{font-weight:600;font-size:16px}.cross{color:#9ba68c;margin:0 9px}.comparison small{display:block;margin-top:4px;color:var(--muted);font-size:12px}.comparison>span:last-child{font-size:13px;white-space:nowrap}.learning-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px}.learning-bottom>span{font-size:11px;color:var(--muted)}.secondary{border:1px solid var(--line);background:#fff;border-radius:10px;padding:12px 18px;min-height:46px;font-size:14px}.test-wrap{max-width:680px;margin:5px auto}.test-count{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:12px}.test-wrap h1{font-size:27px;margin:36px 0 28px;letter-spacing:0}.test-wrap fieldset{border:0;margin:0;padding:0}.answer{display:flex;align-items:center;gap:15px;border:1px solid var(--line);background:#fff;padding:18px;border-radius:12px;margin-bottom:12px;cursor:pointer;font-size:16px}.answer input{accent-color:var(--green);width:18px;height:18px;flex-shrink:0}.answer-letter{font-size:12px;color:var(--muted)}.answer.chosen{border-color:#749278;background:#eff4ec}.test-hint{font-size:12px;margin:22px 0}.muted{font-size:11px}.test-wrap .section-heading{margin:22px 0}.test-wrap>.section-heading:first-child{margin-top:0}.result-score{color:var(--accent)}dialog{border:1px solid var(--line);border-radius:20px;padding:36px;max-width:560px;width:calc(100% - 32px);color:var(--ink);box-shadow:0 20px 100px #17271f30;max-height:85dvh;overflow-y:auto}dialog::backdrop{background:#17271f66}dialog h2{margin:15px 0 20px;padding-right:20px}dialog p{line-height:1.9;font-size:15px;white-space:pre-line}.drawer-example{background:#f2f4ee;padding:16px;border-radius:10px;margin-top:20px}.close-dialog{position:absolute;right:13px;top:9px;font-size:27px;width:44px;height:44px}.close-bottom{margin-top:24px}.skip-link{position:fixed;top:-100px;left:12px;background:#fff;padding:12px;z-index:99}.skip-link:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1300px){main{padding-top:55px}.intro h1{font-size:44px}}
@media(max-width:760px){.site-header{padding:20px 20px 13px;flex-wrap:wrap;gap:17px}.brand{font-size:21px}.brand small{font-size:10px;margin-left:7px}nav{width:100%;justify-content:space-between;gap:4px}nav a{flex:1;text-align:center;padding:10px 6px;font-size:13px}main{padding:29px 20px 44px}h1{font-size:31px}.intro h1{margin:12px 0}.intro p{font-size:13px}.intro{margin-bottom:25px}.notice{padding:18px}.placement-prompt{align-items:flex-start;flex-direction:column;gap:12px}.placement-prompt>span{font-size:13px}.home-grid,.progress-grid,.language-grid{grid-template-columns:1fr;gap:16px}.continue-card{padding:25px}.continue-card .topic-label{float:none;display:block;margin-top:6px}.continue-card h2{font-size:28px;margin-top:21px}.level-stack{grid-template-columns:1fr 1fr;gap:12px}.level-card{padding:18px 15px;gap:6px}.level-card strong{font-size:21px}.level-card>span:last-child{font-size:10px}.recommendation{padding:16px 0;margin:16px 0 25px;gap:12px;align-items:flex-start}.recommendation p{font-size:12px}.small-icon{line-height:1.3}.section-heading{gap:8px}.section-heading h2{font-size:19px}.section-heading>span:not(.language-name){font-size:10px}.topic-grid{grid-template-columns:1fr;gap:13px}.topic-card{padding:21px}.topic-icon{float:left;margin:0 16px 0 0}.topic-card h3{font-size:18px}.topic-card>p{font-size:12px}.topic-foot{margin-top:20px;padding-top:14px;font-size:12px}footer{margin:0 20px;flex-direction:column;gap:6px;padding:23px 0 30px;font-size:10px}.page-intro h1{font-size:29px}.page-intro p{font-size:13px}.progress-grid{margin:24px 0 32px}.panel{padding:24px}.panel p{font-size:13px}.panel h2{font-size:23px}.learning-top{align-items:flex-start;flex-direction:column;gap:20px;margin-bottom:16px}.learning-top h1{font-size:26px}.learning-top label{width:100%;flex-direction:row;align-items:center;justify-content:space-between}.learning-top select{width:210px}.concept-selector{gap:9px;font-size:11px}.concept-selector label{white-space:nowrap}.concept-selector select{flex:1;width:0;font-size:12px;padding-right:20px}.meaning{padding:31px 0}.meaning h2{font-size:29px}.meaning p{font-size:11px}.language-panel{padding:23px 20px}.expression{font-size:25px;min-height:82px;line-height:1.95}.expression[lang=ja]{font-size:24px}.language-panel .section-heading{margin-bottom:13px}.grammar-area{margin-bottom:23px}.comparison{padding:19px 18px;gap:10px}.comparison strong{font-size:14px}.comparison>span:last-child{font-size:11px}.comparison small{font-size:10px}.cross{margin:0 5px}.learning-bottom{flex-wrap:wrap;gap:12px}.learning-bottom>span{order:3;text-align:center;width:100%}.learning-bottom button{flex:1}.test-wrap h1{font-size:23px;margin:30px 0 24px;overflow-wrap:anywhere}.answer{font-size:15px;padding:16px 13px;gap:10px}.test-wrap .section-heading{gap:10px}.test-wrap .primary{padding:12px 17px}.review-list a{align-items:flex-start;flex-direction:column;gap:3px}.result-note{padding:24px 18px}.result-note h2{font-size:20px}.result-note p{font-size:13px}dialog{margin:auto 0 0;width:100%;max-width:none;border-radius:20px 20px 0 0;padding:30px 24px}dialog h2{font-size:22px}dialog p{font-size:14px}}
@media(prefers-reduced-motion:no-preference){a,button{transition:background-color .15s,border-color .15s}}
/* Phase 3 uses the existing card palette and spacing. */
.queue-preview{padding-left:1.3rem;line-height:1.7}.queue-preview li{margin:1rem 0}.queue-preview small{display:block;color:var(--muted,#68746e)}
.topic-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-top:.7rem}.topic-actions a{font-size:.85rem}.topic-card small{display:block;margin-top:.5rem}
.dialogue-turns{display:grid;gap:1rem;font-size:clamp(1.1rem,2vw,1.55rem)}.dialogue-turn{display:grid;grid-template-columns:1.3rem minmax(0,1fr);gap:.7rem}.dialogue-turn strong{font-size:.85rem;color:var(--muted,#68746e)}
.question-target{white-space:pre-wrap;font-size:1.25rem;line-height:1.9}.answer>span:last-child{white-space:pre-wrap;min-width:0;overflow-wrap:anywhere}.usage-example{padding:1rem;background:#f7f8f4;border-radius:12px;font-size:1rem;line-height:1.8}.usage-example p{white-space:pre-wrap}
.language-panel,.panel,.topic-card,.expression,.chunks,.chunk{min-width:0}.expression,.chunk{overflow-wrap:anywhere}.chunk{white-space:normal;text-align:left;max-width:100%;line-height:2}.expression{white-space:pre-wrap}.expression rt,.chunk rt{font-size:.5em}.mastery-buttons{flex-wrap:wrap}.review-list>div{padding:1rem 0}
#checkpoint-topic,#checkpoint-lang{display:block;width:100%;margin:.5rem 0 1.5rem}.begin-queue{margin-bottom:1rem}.topic-grid{align-items:start}
@media(max-width:600px){.section-heading{flex-wrap:wrap;gap:.75rem}.learning-top label{width:100%}.concept-selector select{width:100%;min-width:0}.chunk{font-size:1rem}.language-panel{padding:1.1rem}.difficulty{font-size:.75rem}.test-wrap h1{font-size:1.45rem}.answer{padding:.8rem;gap:.65rem}.dialogue-turns{line-height:2}}