:root{--bg:#f7f8fa;--surface:#fff;--ink:#15202b;--sub:#4b5966;--muted:#627080;--line:#d7dde3;--blue:#365ccc;--blue-pale:#e9efff;--green:#176b50;--green-pale:#e6f3ec;--amber:#a75924;--amber-pale:#fbefdf}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Yu Gothic",Meiryo,sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.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}[hidden]{display:none!important}.words-app{min-height:100vh}.shell{max-width:1160px;margin:auto;padding:0 24px}.brand-row{display:flex;align-items:center;gap:10px;padding:24px 0 14px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--ink);border-radius:10px;color:white;font-family:Georgia,serif;font-size:23px;font-weight:700;line-height:1}.brand-mark span{color:#a8c0ff}.brand-name{font-size:18px;font-weight:800;letter-spacing:-.03em}.brand-tag{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:12px}.app-nav{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:0;overflow-x:auto}.nav-btn{border:0;background:transparent;color:var(--sub);min-height:52px;padding:10px 18px;white-space:nowrap;font-size:14px;font-weight:700;border-bottom:3px solid transparent}.nav-btn:hover{color:var(--blue)}.nav-btn.is-active{color:var(--blue);border-bottom-color:var(--blue)}.nav-count{display:inline-block;background:#e6eaf0;border-radius:99px;font-size:11px;min-width:20px;padding:1px 5px;margin-left:4px;color:var(--ink)}.view{padding-bottom:36px}.hero-grid{display:grid;grid-template-columns:1fr .92fr;gap:8%;align-items:center;padding:76px 0 78px}.eyebrow,.section-kicker{font-size:11px;line-height:1.5;color:var(--blue);font-weight:800;letter-spacing:.16em}.hero-copy h1{font-size:clamp(41px,5.2vw,68px);letter-spacing:-.055em;line-height:1.3;margin:17px 0 22px;font-weight:800}.hero-copy h1 em{font-style:normal;color:var(--blue)}.hero-copy>p{max-width:520px;color:var(--sub);font-size:17px;line-height:1.9;margin:0 0 28px}.primary-btn{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;background:var(--blue);color:white;border:1px solid var(--blue);border-radius:10px;padding:15px 21px;min-height:54px;font-weight:800;text-decoration:none}.primary-btn:hover{background:#294aaa}.primary-btn:disabled{opacity:.55;cursor:not-allowed}.hero-copy .hero-note{font-size:12px;color:var(--muted);margin:12px 0 0}.hero-demo{background:#fff;border:1px solid var(--line);border-radius:18px;padding:29px;box-shadow:0 18px 50px rgba(21,32,43,.05);transform:rotate(2deg)}.demo-label{display:flex;align-items:center;gap:9px;font-family:ui-monospace,SFMono-Regular,monospace;font-size:11px;color:var(--muted);letter-spacing:.07em}.demo-label span:last-child{margin-left:auto}.demo-dot{width:7px;height:7px;background:var(--green);border-radius:50%}.demo-story{font-family:Georgia,serif;font-size:clamp(24px,2.6vw,35px);line-height:1.48;letter-spacing:-.015em;margin:30px 0}.demo-story mark{color:var(--blue);background:var(--blue-pale);border-radius:3px;padding:0 3px}.demo-divider{height:1px;background:var(--line)}.demo-question{font-weight:800;font-size:14px;margin:20px 0 11px}.demo-answer{border:2px solid var(--green);background:var(--green-pale);padding:13px 15px;border-radius:9px;display:flex;justify-content:space-between;gap:16px;font-weight:700;font-size:14px}.demo-answer span{color:var(--green)}.demo-caption{font-size:12px;color:var(--muted);margin-top:16px}.dashboard{border:1px solid var(--line);background:var(--surface);border-radius:18px;padding:28px 32px}.dashboard-intro,.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px}.dashboard h2,.section-head h2,.method-section h2{font-size:26px;line-height:1.4;letter-spacing:-.035em;margin:5px 0 0}.dashboard-intro p{font-size:13px;color:var(--muted);margin:0 0 4px}.study-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0 24px}.study-card{display:flex;align-items:center;text-align:left;gap:17px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:22px;min-height:110px}.study-card:hover{border-color:var(--blue);background:#f3f6ff}.study-icon{display:grid;place-items:center;width:43px;height:43px;flex:none;border-radius:10px;background:var(--blue-pale);color:var(--blue);font-size:25px;line-height:1}.review-card .study-icon{background:var(--amber-pale);color:var(--amber)}.study-card-body{display:flex;flex-direction:column}.study-card-body strong{font-size:17px}.study-card-body small{color:var(--sub);font-size:13px;margin-top:3px}.study-arrow{margin-left:auto;color:var(--blue);font-size:19px}.mini-stats{display:flex;gap:0;border-top:1px solid var(--line);padding-top:20px}.mini-stats div{display:flex;flex-direction:column;padding:0 30px;border-right:1px solid var(--line)}.mini-stats div:first-child{padding-left:0}.mini-stats div:last-child{border:0}.mini-stats strong{font-size:24px;line-height:1.3;font-variant-numeric:tabular-nums}.mini-stats span{font-size:12px;color:var(--muted)}.themes-section{padding:66px 0}.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:23px}.theme-card{text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:23px;min-height:195px;display:flex;flex-direction:column;align-items:flex-start}.theme-card:hover{border-color:var(--blue);transform:translateY(-2px)}.theme-number{font-family:ui-monospace,SFMono-Regular,monospace;color:var(--muted);font-size:12px;margin-bottom:auto}.theme-card h3{font-size:20px;letter-spacing:-.03em;margin:16px 0 3px}.theme-card p{font-size:13px;color:var(--sub);margin:0 0 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.due-label{font-size:11px;color:var(--blue);font-weight:700}.notebook-actions{display:flex;gap:6px}.small-btn{border:1px solid var(--line);background:#fff;border-radius:7px;padding:7px 10px;min-height:38px;font-size:12px;font-weight:700}.small-btn:hover{border-color:var(--blue);color:var(--blue)}.empty-panel{padding:48px 20px;text-align:center;border:1px dashed #aeb7c0;border-radius:12px;background:#fff;color:var(--sub)}.empty-panel h2{color:var(--ink);font-size:21px}.empty-panel p{margin-bottom:22px}.session-view{max-width:720px;margin:auto}.session-top{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:24px 0 13px;font-size:12px;font-weight:700;color:var(--sub)}.text-btn{border:0;background:transparent;color:var(--sub);font-size:13px;font-weight:700;min-height:44px;padding:8px 0}.text-btn:hover{color:var(--blue)}.progress-track{height:5px;background:#dfe4e9;border-radius:5px;overflow:hidden}.progress-track>div{height:100%;background:var(--blue);width:0;transition:width .2s}.session-content{padding:40px 0 52px}.step-label{font-size:11px;font-weight:800;letter-spacing:.14em;color:var(--blue)}.session-content h1,.detail-content h1{font-size:clamp(29px,4vw,42px);line-height:1.35;letter-spacing:-.04em;margin:11px 0 14px}.step-lead{color:var(--sub);font-size:14px;margin:0 0 24px}.scene-card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:28px;margin:24px 0}.scene-card .scene-caption{font-size:11px;font-weight:800;color:var(--muted);letter-spacing:.1em}.scene-text{font-family:Georgia,serif;font-size:clamp(23px,3vw,32px);line-height:1.55;letter-spacing:-.01em;margin:17px 0 20px}.target-word{color:var(--blue);background:var(--blue-pale);border-bottom:2px solid var(--blue);padding:0 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var(--line);border-radius:11px;background:#fff;padding:19px;margin-top:18px}.feedback h2{font-size:16px;margin:0 0 8px}.feedback p{font-size:14px;color:var(--sub);margin:6px 0}.feedback .translation{color:var(--ink);font-weight:700}.feedback .clue{border-left:3px solid var(--blue);padding-left:10px;margin-top:13px}.feedback .reason{font-size:12px}.next-step{margin-top:22px;width:100%}.writing-box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;margin-top:22px}.writing-box label{display:block;font-weight:800;font-size:14px;margin-bottom:8px}.writing-box textarea{display:block;width:100%;min-height:102px;resize:vertical;border:1.5px solid #9ba7b4;border-radius:8px;padding:12px;color:var(--ink);font-family:Georgia,serif;font-size:18px;line-height:1.5}.writing-box small{display:block;color:var(--muted);margin-top:8px}.writing-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.writing-actions .primary-btn{flex:1}.writing-actions .secondary-btn{flex:1}.sample-card{border-left:3px solid var(--blue);padding:10px 16px;background:#fff;margin:16px 0;color:var(--sub);font-size:14px}.sample-card strong{display:block;color:var(--ink)}.word-complete{background:var(--ink);color:#fff;border-radius:16px;padding:32px}.word-complete .step-label{color:#a9c1ff}.word-complete h1{font-family:Georgia,serif;font-size:50px;margin:10px 0}.word-complete p{color:#dce5ec}.completion-note{background:var(--green-pale);border:1px solid #aacbb8;border-radius:10px;padding:14px 16px;margin:19px 0;color:#164b39;font-size:14px}.completion-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:22px}.completion-actions>*{flex:1}.detail-content{max-width:780px;margin:auto;padding:30px 0 60px}.detail-meta{color:var(--blue);font-size:12px;font-weight:800}.detail-content .detail-meaning{font-size:19px;color:var(--sub);margin:-4px 0 26px}.detail-scene{background:#fff;border:1px solid var(--line);border-radius:12px;padding:25px;margin:20px 0}.detail-scene .scene-text{font-size:27px}.detail-scene .translation{color:var(--sub);font-size:14px}.detail-explanation{border-left:3px solid var(--blue);padding:4px 14px;color:var(--sub)}.detail-controls{display:flex;gap:10px;flex-wrap:wrap}.detail-controls>*{flex:1}.detail-quiz{margin-top:22px}.detail-quiz h2{font-size:17px}.app-footer{display:flex;justify-content:center;align-items:center;gap:20px;border-top:1px solid var(--line);padding:24px;color:var(--muted);font-size:12px}.app-footer a{text-decoration:none}.app-footer a:hover{text-decoration:underline}
.words-app #nrDailyMission,.words-app #nr-cefr-path{display:none!important}
.hero-copy h1{font-size:clamp(41px,4.3vw,56px)}
.notebook-item .due-label{display:block;margin-top:6px}.notebook-actions{flex-wrap:wrap}.note-editor{grid-column:1/-1;display:grid;gap:9px;border-top:1px solid var(--line);padding-top:14px}.note-editor label{font-size:13px;font-weight:700}.note-editor textarea{min-height:82px;resize:vertical;border:1.5px solid #9ba7b4;border-radius:8px;padding:11px;font-family:Georgia,serif;font-size:17px}.note-editor>div{display:flex;gap:8px}
.dashboard-date{text-align:right}.dashboard-date small{display:block;color:var(--blue);font-size:12px;font-weight:800;font-variant-numeric:tabular-nums}
@media(max-width:850px){.hero-grid{gap:5%}.hero-demo{padding:20px}.theme-grid,.result-grid{grid-template-columns:repeat(2,1fr)}.method-section{gap:25px}}
@media(max-width:850px){.shell{padding:0 18px}.brand-row{padding-top:15px}.brand-tag{display:none}.nav-btn{padding:10px 12px;font-size:13px}.hero-grid{grid-template-columns:1fr;padding:42px 0 48px}.hero-copy h1{font-size:43px}.hero-copy>p{font-size:15px}.hero-demo{transform:none;margin-top:34px}.dashboard{padding:21px}.study-grid{grid-template-columns:1fr}.study-card{min-height:88px;padding:15px}.mini-stats div{padding:0 15px}.mini-stats strong{font-size:20px}.themes-section{padding:48px 0}.theme-grid,.result-grid{grid-template-columns:1fr}.theme-card{min-height:155px}.method-section{display:block;padding:35px 0}.method-section ol{margin-top:28px}.home-footer{flex-direction:column;gap:2px}.page-heading{padding:40px 0 25px}.choices{grid-template-columns:1fr}.session-content{padding:28px 0 40px}.scene-card{padding:20px}.scene-text{font-size:25px}.notebook-item{grid-template-columns:1fr;gap:7px}.notebook-actions{justify-content:flex-start}.completion-actions{flex-direction:column}.app-footer{gap:12px}}
@media(max-width:400px){.hero-copy h1{font-size:37px}.method-section ol{gap:4px}.method-section li{padding-left:9px}.method-section li strong{font-size:15px}.method-section li small{font-size:11px}.mini-stats div{padding:0 10px}.demo-story{font-size:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}