:root{--navy:#641f2b;--orange:#bd001a;--orange2:#fff0f2;--sky:#fff5f6;--ink:#302326;--muted:#745f64;--line:#ead9dc;--green:#197154;--white:#fff;--shadow:0 18px 55px rgba(111,24,39,.12);--little:#9561b9;--ring:#e6b13e;--middle:#e77c5a;--index:#5aa886;--thumb:#4f8fc0}
*{box-sizing:border-box}
body{margin:0;background:linear-gradient(180deg,#fff1f3 0,#fff8f8 390px,#fff 390px);color:var(--ink);font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;line-height:1.65}
body.embedded-app{background:#fff}
body.embedded-app .app-shell{padding-top:18px;padding-bottom:18px}
body.single-lesson .practice-selector,body.single-lesson .why-section,body.single-lesson .more-practice-guide{display:none}
button{font:inherit}.app-shell{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:24px 0 70px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:38px;color:var(--navy);font-weight:800}.brand{display:flex;align-items:center;gap:13px}.brand-logo{width:64px;height:72px;border-radius:10px;object-fit:contain;box-shadow:0 5px 14px rgba(139,0,22,.16)}.prototype-badge{padding:6px 12px;border:1px solid #e5c7cc;border-radius:999px;background:rgba(255,255,255,.78);font-size:.78rem}
.lesson-heading{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(300px,.55fr);align-items:end;gap:42px;margin-bottom:28px}.eyebrow,.step-label,.result-kicker,.analysis-label{margin:0 0 7px;color:var(--orange);font-size:.82rem;font-weight:800;letter-spacing:.1em}.lesson-heading h1{margin:0;color:var(--navy);font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.18}.hero-guide{display:grid;grid-template-columns:1fr 120px;align-items:center;gap:12px}.lesson-summary{margin:0;padding:18px 20px;border-left:4px solid var(--orange);background:rgba(255,255,255,.82);color:#6b555a}.teacher-portrait{display:grid;width:120px;height:120px;place-items:center;overflow:hidden;border:3px solid #fff;border-radius:20px;background:#fff;box-shadow:0 8px 22px rgba(139,0,22,.15);outline:2px solid #efd1d6}.teacher-portrait img{display:block;width:100%;height:100%;object-fit:contain}
.practice-card{position:relative;overflow:hidden;border:1px solid #d4e1e7;border-radius:24px;background:#fff;box-shadow:var(--shadow)}.practice-card.lesson-switching{animation:lesson-card-switch .62s ease}.practice-head{display:flex;justify-content:space-between;gap:24px;padding:25px 32px;border-bottom:1px solid var(--line)}.practice-labels{display:flex;align-items:center;gap:10px;margin-bottom:7px}.practice-labels .step-label{margin:0}.current-lesson-pill{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;background:var(--orange);color:#fff;font-size:.82rem;font-weight:900;letter-spacing:.04em;box-shadow:0 4px 12px rgba(189,0,26,.18)}.practice-head h2{margin:0;color:var(--navy);font-size:clamp(1.3rem,2.4vw,1.8rem)}.progress-block{flex:0 0 165px;align-self:center;text-align:right;color:var(--muted);font-size:.87rem}.progress-track{height:7px;margin-top:8px;overflow:hidden;border-radius:20px;background:#e8eef1}#progressBar{width:0;height:100%;background:var(--orange);transition:width .25s}
.lesson-switch-notice{position:fixed;left:50%;top:50%;z-index:20;min-width:min(400px,calc(100% - 32px));padding:20px 30px;border:3px solid #fff;border-radius:18px;background:var(--orange);color:#fff;text-align:center;box-shadow:0 18px 55px rgba(100,31,43,.34);opacity:0;pointer-events:none;transform:translate(-50%,-42%) scale(.94);transition:opacity .18s ease,transform .18s ease}.lesson-switch-notice span,.lesson-switch-notice strong{display:block}.lesson-switch-notice span{font-size:clamp(.9rem,2vw,1.1rem);font-weight:800}.lesson-switch-notice strong{margin-top:3px;font-size:clamp(1.25rem,3vw,1.7rem);font-weight:900}.lesson-switch-notice.show{opacity:1;transform:translate(-50%,-50%) scale(1)}
@keyframes lesson-card-switch{0%{box-shadow:0 0 0 0 rgba(189,0,26,.34)}45%{box-shadow:0 0 0 9px rgba(189,0,26,.16),var(--shadow)}100%{box-shadow:var(--shadow)}}
.ready-panel{display:grid;grid-template-columns:1fr 1fr;gap:15px;padding:32px}.principle{display:flex;gap:15px;padding:20px;border:1px solid var(--line);border-radius:16px;background:#fbfdfe}.principle-number{display:grid;flex:0 0 36px;height:36px;place-items:center;border-radius:50%;background:var(--navy);color:#fff;font-weight:800}.principle strong{color:var(--navy);font-size:1.03rem}.principle p{margin:4px 0 0;color:var(--muted);font-size:.92rem}.start-box{grid-column:1/-1;padding:24px;border-radius:17px;background:var(--orange2);text-align:center}.start-box p{margin:0;color:#5b493e}
.primary-button,.secondary-button{min-width:200px;margin-top:14px;padding:13px 22px;border:0;border-radius:999px;cursor:pointer;font-weight:800}.primary-button{background:var(--orange);color:#fff;box-shadow:0 8px 18px rgba(232,118,44,.22)}.primary-button:hover{background:#d86622}.secondary-button{background:var(--navy);color:#fff}.primary-button:focus-visible,.secondary-button:focus-visible,.text-button:focus-visible{outline:4px solid #f3bd94;outline-offset:3px}
.typing-panel{position:relative;padding:22px 32px 34px}.quiet-stats{display:flex;justify-content:flex-end;gap:10px;margin-bottom:18px}.quiet-stats div{min-width:125px;padding:7px 12px;border-radius:10px;background:#f3f7f9;text-align:center}.quiet-stats span{display:block;color:var(--muted);font-size:.74rem}.quiet-stats strong{color:var(--navy);font-size:1.05rem}.prompt-area{padding:26px 18px 20px;border:1px solid #dce7eb;border-radius:18px;background:#fbfdfe;text-align:center}.japanese-prompt{margin:0 0 8px;color:var(--navy);font-size:clamp(1.6rem,4vw,2.6rem);font-weight:800;letter-spacing:.2em}.roman-prompt{min-height:54px;margin:0;font-family:Consolas,Menlo,monospace;font-size:clamp(1.7rem,4vw,2.8rem);font-weight:800;letter-spacing:.18em}.roman-prompt .done{color:var(--green)}.roman-prompt .current{padding:0 3px;border-bottom:4px solid var(--orange);color:var(--navy)}.roman-prompt .remaining{color:#9ba8ae}.return-note{margin:8px 0 0;color:var(--muted);font-size:.9rem}
.guide-panel{display:flex;align-items:center;justify-content:center;gap:30px;margin:19px 0}.next-key-box,.guide-panel>div{display:flex;align-items:center;gap:10px}.guide-panel span{color:var(--muted);font-size:.82rem}.guide-panel strong{padding:7px 12px;border:2px solid #3f9272;border-radius:9px;background:#d9f0e7;color:#145b45;font-size:1.05rem}.guide-panel strong[data-finger="little"]{border-color:var(--little);background:#f0e5f7;color:#623981}.guide-panel strong[data-finger="ring"]{border-color:#d39b25;background:#fff0bd;color:#795912}.guide-panel strong[data-finger="middle"]{border-color:var(--middle);background:#ffe0d7;color:#8d4028}.next-key-box strong{display:grid;width:54px;height:54px;padding:0;place-items:center;border:2px solid var(--orange);border-radius:11px;background:var(--orange2);color:var(--navy);font:800 1.55rem Consolas,monospace}
.hand-zones{display:grid;grid-template-columns:1fr 1fr;width:min(960px,100%);margin:22px auto 4px;color:var(--navy);font-size:.84rem;font-weight:800;text-align:center}.hand-zones span:first-child{border-right:3px solid var(--navy)}
.keyboard{width:min(960px,100%);margin:0 auto}.key-row{display:flex;justify-content:center;gap:4px;margin-bottom:4px}.key{position:relative;display:flex;flex:var(--units,1) 1 0;min-width:0;height:49px;align-items:center;justify-content:center;border:2px solid #bac8ce;border-bottom-width:4px;border-radius:7px;color:#263943;font:800 clamp(.82rem,1.45vw,1.12rem) Consolas,monospace;line-height:1;transition:.12s}.key-sub{position:absolute;top:4px;left:6px;font-size:.62em;font-weight:700}.key-main{white-space:nowrap}.key.advanced-key{border-color:#cbd5d9;background:#f3f6f7;color:#718087;font-size:clamp(.63rem,1.05vw,.84rem)}.key.home::after{content:"";position:absolute;bottom:6px;width:12px;height:2px;border-radius:2px;background:#566b75}.key.boundary::before{content:"";position:absolute;left:-6px;top:-6px;bottom:-6px;border-left:3px dashed var(--navy);z-index:2}.key.target{border-color:var(--orange);background:var(--orange)!important;color:#fff;transform:translateY(2px);box-shadow:0 0 0 4px #ffd8bb}.key.finger-little{border-color:var(--little);background:#f0e5f7}.key.finger-ring{border-color:#d39b25;background:#fff0bd}.key.finger-middle{border-color:var(--middle);background:#ffe0d7}.key.finger-index{border-color:#3f9272;background:#d9f0e7}.key.finger-thumb{border-color:var(--thumb);background:#e2f0fa}.key.support-key.finger-little{border-color:#bea0d2;background:#faf6fc;color:#745888}.key.support-key.finger-thumb{border-color:#9fc2dc;background:#f1f7fb;color:#47728f}.finger-legend{display:flex;justify-content:center;flex-wrap:wrap;gap:15px;margin:15px 0 0;color:var(--muted);font-size:.85rem;font-weight:700}.finger-legend span{display:flex;align-items:center;gap:6px}.finger-legend i{width:13px;height:13px;border-radius:4px}.little{background:var(--little)}.ring{background:var(--ring)}.middle{background:var(--middle)}.index{background:var(--index)}.thumb{background:var(--thumb)}.feedback{min-height:26px;margin:16px 0 0;text-align:center;color:var(--muted);font-weight:700}.feedback.success{color:var(--green)}
.pause-panel{position:absolute;inset:0;z-index:5;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:22px;background:rgba(255,255,255,.985);text-align:center}.pause-icon{display:grid;width:48px;height:48px;place-items:center;border-radius:50%;background:var(--orange2);color:var(--orange);font-size:1.7rem;font-weight:800}.pause-kicker{margin:8px 0 2px;color:var(--orange);font-size:.85rem;font-weight:800}.pause-panel h3{margin:0;color:var(--navy);font-size:clamp(1.3rem,2.7vw,1.8rem)}.mistake-comparison{display:flex;align-items:center;gap:14px;margin:12px 0 8px}.mistake-comparison>div{min-width:96px;padding:6px 16px;border:2px solid #d7665d;border-radius:12px;background:#fff0ee}.mistake-comparison .correct-key{border-color:var(--green);background:#e9f6f0}.mistake-comparison span{display:block;color:var(--muted);font-size:.75rem;font-weight:700}.mistake-comparison strong{display:block;color:#bd4439;font:800 1.55rem Consolas,monospace}.mistake-comparison .correct-key strong{color:var(--green)}.comparison-arrow{color:var(--navy)!important;font-size:1.4rem!important}.mistake-keyboard{width:min(560px,95%);margin:1px auto 3px}.mistake-keyboard .key-row{gap:3px;margin-bottom:3px}.mistake-keyboard .key{width:8.6%;border-width:1px;border-bottom-width:2px;border-color:#c9d4d9;background:#f6f8f9;color:#7b8a91;font-size:clamp(.7rem,1.4vw,.88rem)}.mistake-keyboard .key.actual-wrong{border:3px solid #d85549;background:#ffe3df;color:#a92f26;box-shadow:0 0 0 3px #ffd0ca}.mistake-keyboard .key.expected-correct{border:3px solid var(--green);background:#dcf3e9;color:#075e42;box-shadow:0 0 0 3px #bfe8d7}.pause-panel>p:last-of-type{max-width:650px;margin:7px auto 0;color:var(--muted);font-size:1rem}.pause-panel .emphasis{display:inline-block;margin:1px 2px;padding:0 6px;border-radius:5px;background:#fff0bd;color:var(--navy);font-weight:900}.pause-panel .finger-emphasis{background:#d9f0e7;color:#145b45}
.pause-panel .tip-line{display:block;margin-top:7px;padding:7px 11px;border-left:4px solid var(--orange);border-radius:4px;background:#fff7ef;text-align:left}.pause-panel .tip-label{margin-right:5px;color:var(--orange);font-weight:900}
.mistake-keyboard{width:min(760px,98%)}.mistake-keyboard .key-row{gap:2px;margin-bottom:2px}.mistake-keyboard .key{width:auto;height:32px;font-size:clamp(.52rem,.85vw,.72rem)}.mistake-keyboard .key-sub{top:2px;left:3px}.mistake-keyboard .key.actual-wrong,.mistake-keyboard .key.expected-correct{box-shadow:0 0 0 2px currentColor}
.result-panel{padding:42px 32px;text-align:center}.result-panel h2{margin:0;color:var(--navy);font-size:clamp(1.6rem,3.5vw,2.35rem)}.result-praise{max-width:650px;margin:10px auto;color:var(--green);font-weight:700}.result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-width:760px;margin:27px auto}.result-grid div{padding:13px 10px;border-radius:12px;background:#f3f7f9}.result-grid span{display:block;color:var(--muted);font-size:.78rem}.result-grid strong{color:var(--navy);font-size:1.25rem}.analysis-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:820px;margin:0 auto;text-align:left}.analysis-grid section{padding:21px;border:1px solid var(--line);border-radius:16px}.analysis-grid h3{margin:0;color:var(--navy);font-size:1.13rem}.analysis-grid ul{margin:10px 0 0;padding-left:1.25rem;color:var(--muted)}.analysis-grid li+li{margin-top:6px}.next-practice{background:var(--orange2);border-color:#f3d3bc!important}.next-practice p:last-child{margin:8px 0 0;color:#655044}.result-actions{display:flex;justify-content:center;align-items:center;gap:18px}.text-button{margin-top:14px;padding:10px;border:0;background:transparent;color:var(--navy);cursor:pointer;text-decoration:underline;text-underline-offset:4px}
.more-practice-guide{display:grid;grid-template-columns:64px 1fr;align-items:center;gap:20px;margin:28px 0 14px;padding:22px 28px;border-radius:20px;background:linear-gradient(135deg,#641f2b 0,#8d3344 100%);color:#fff;box-shadow:0 14px 32px rgba(100,31,43,.2)}.more-practice-arrow{display:grid;width:58px;height:58px;place-items:center;border:2px solid rgba(255,255,255,.68);border-radius:50%;background:rgba(255,255,255,.12);font-size:2rem;font-weight:900;line-height:1}.more-practice-kicker{margin:0 0 3px;color:#ffd8de;font-size:.82rem;font-weight:900;letter-spacing:.08em}.more-practice-guide h2{margin:0;font-size:clamp(1.25rem,2.6vw,1.75rem);line-height:1.4}.more-practice-guide div>p:last-child{margin:5px 0 0;color:#fff4f5;font-size:.92rem}.practice-selector{margin-top:0;padding:28px 30px;border:1px solid #c6dce6;border-radius:22px;background:linear-gradient(180deg,#edf7fb 0,#f8fcfd 100%);box-shadow:0 12px 35px rgba(23,63,89,.11)}.selector-heading{display:flex;align-items:end;justify-content:space-between;gap:24px}.selector-heading h2{margin:0;color:var(--navy);font-size:clamp(1.4rem,2.5vw,2rem)}.selector-heading>p{margin:0;color:var(--muted)}.mode-tabs{display:flex;gap:8px;margin:22px 0 16px;overflow-x:auto;padding:2px 2px 5px}.mode-tab{flex:1;min-width:128px;padding:9px 14px 10px;border:1px solid #b9d1dc;border-radius:16px;background:#fff;color:var(--navy);cursor:pointer;font-weight:800;white-space:nowrap;line-height:1.3}.mode-tab span{display:block;margin-bottom:2px;color:var(--orange);font-size:.72rem;letter-spacing:.04em}.mode-tab.active{border-color:var(--navy);background:var(--navy);color:#fff}.mode-tab.active span{color:#fff}.mode-tab:focus-visible,.lesson-choice:focus-visible{outline:4px solid #f3bd94;outline-offset:2px}.lesson-list{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.lesson-choice{min-height:108px;padding:16px;border:1px solid #cbdde4;border-radius:14px;background:#fff;text-align:left;color:var(--ink)}button.lesson-choice{cursor:pointer}.lesson-choice span,.lesson-choice strong,.lesson-choice small{display:block}.lesson-number{color:var(--orange);font-size:.76rem;font-weight:900;letter-spacing:.06em}.lesson-choice strong{margin-top:5px;color:var(--navy);font-size:.97rem}.lesson-choice small{margin-top:7px;color:var(--muted)}.current-lesson{border:2px solid var(--orange);background:var(--orange2)}.current-lesson small{color:var(--orange);font-weight:800}.lesson-choice.coming{opacity:.68}
.why-section{padding:52px 14px 0}.why-section>h2{max-width:720px;margin:0;color:var(--navy);font-size:clamp(1.45rem,3vw,2.2rem);line-height:1.35}.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}.why-grid p{margin:0;padding:19px;border-top:4px solid var(--navy);background:var(--sky)}.why-grid strong,.why-grid span{display:block}.why-grid strong{color:var(--navy)}.why-grid span{margin-top:6px;color:var(--muted);font-size:.9rem}.hidden{display:none!important}
@media(max-width:760px){.app-shell{width:min(100% - 20px,1080px);padding-top:16px}.topbar{margin-bottom:24px}.brand-logo{width:54px;height:61px}.lesson-heading{grid-template-columns:1fr;gap:18px}.hero-guide{grid-template-columns:1fr 92px}.teacher-portrait{width:92px;height:92px;border-radius:16px}.practice-head{display:block;padding:20px}.progress-block{margin-top:14px;text-align:left}.ready-panel{grid-template-columns:1fr;padding:20px}.typing-panel{padding:17px 12px 25px}.quiet-stats{justify-content:center}.quiet-stats div{min-width:0;flex:1;padding:7px 4px}.guide-panel{gap:16px;flex-wrap:wrap}.key{width:9%;font-size:.82rem}.key-row{gap:3px}.pause-panel{position:fixed;overflow:auto;padding:20px 10px}.mistake-keyboard{width:min(520px,100%)}.result-panel{padding:34px 18px}.result-grid,.analysis-grid,.why-grid{grid-template-columns:1fr 1fr}.result-actions{flex-direction:column;gap:0}}
@media(max-width:760px){.more-practice-guide{grid-template-columns:46px 1fr;gap:13px;padding:18px 16px}.more-practice-arrow{width:44px;height:44px;font-size:1.6rem}.more-practice-guide div>p:last-child{font-size:.84rem}.practice-selector{padding:22px 16px}.selector-heading{display:block}.selector-heading>p{margin-top:6px}.lesson-list{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.brand>span:last-child{font-size:.88rem}.prototype-badge{font-size:.7rem}.result-grid,.analysis-grid,.why-grid{grid-template-columns:1fr}.japanese-prompt,.roman-prompt{letter-spacing:.1em}.finger-legend{gap:8px}}
@media(max-width:760px){.typing-panel{padding-left:7px;padding-right:7px}.key{width:auto;height:38px;font-size:clamp(.53rem,2vw,.78rem);border-width:1px;border-bottom-width:3px}.key.advanced-key{font-size:clamp(.42rem,1.65vw,.66rem)}.key-row{gap:2px;margin-bottom:2px}.key-sub{top:3px;left:3px}.pause-panel{padding-left:6px;padding-right:6px}.mistake-keyboard{width:100%}.mistake-keyboard .key{height:26px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.home-position-guide{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;width:min(760px,100%);margin:2px auto 10px;padding:8px 12px;border:2px solid #d9a6af;border-radius:12px;background:#fff3f5;color:var(--navy);font-size:.82rem}.home-position-guide>span{font-weight:800}.home-position-guide strong{padding:2px 8px;border-radius:6px;background:#fff;color:var(--navy);font-family:Consolas,monospace;font-size:1rem;letter-spacing:.08em}.home-position-guide b{padding:3px 9px;border-radius:999px;background:var(--navy);color:#fff}.home-position-guide small{color:var(--orange);font-weight:800}.home-position-guide.compact{width:min(620px,96%);margin:5px auto 7px;padding:5px 9px;font-size:.72rem}.home-position-guide.compact strong{font-size:.82rem}.key.home-position-key,.key.support-key.home-position-key{border-bottom-color:var(--navy);box-shadow:inset 0 -5px 0 rgba(100,31,43,.2)}.key.home-anchor{z-index:1;outline:3px solid var(--navy);outline-offset:1px}.key.home-anchor::before{content:"戻る";position:absolute;top:-17px;left:50%;z-index:4;padding:1px 4px;border-radius:4px;background:var(--navy);color:#fff;font:700 .55rem/1.2 "Noto Sans JP",sans-serif;transform:translateX(-50%)}.key.target.home-anchor{outline-color:var(--navy)}
@media(max-width:760px){.home-position-guide{gap:4px;padding:6px;font-size:.7rem}.home-position-guide strong{font-size:.78rem;padding:2px 5px}.home-position-guide b{padding:2px 6px}.home-position-guide small{width:100%;text-align:center}.key.home-anchor::before{display:none}}
#mode-beginner{grid-template-columns:repeat(4,1fr)}
@media(max-width:760px){#mode-beginner{grid-template-columns:1fr 1fr}}
.topbar-actions{display:flex;align-items:center;gap:10px}.roman-guide-button,.guide-link-button{border:1px solid #d9aab2;border-radius:999px;background:#fff;color:var(--navy);cursor:pointer;font-weight:800}.roman-guide-button{padding:8px 14px;font-size:.82rem}.guide-link-button{min-width:200px;padding:12px 20px}.roman-guide-button:hover,.guide-link-button:hover{border-color:var(--orange);background:var(--orange2)}.start-actions{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}.start-actions .primary-button{margin-top:14px}.start-actions .guide-link-button{min-width:200px;margin-top:0}.is-practicing [data-roman-guide]{display:none}
.roman-guide-dialog{width:min(980px,calc(100% - 30px));max-height:90vh;padding:0;border:0;border-radius:24px;background:#fff;color:var(--ink);box-shadow:0 24px 80px rgba(65,17,26,.3)}.roman-guide-dialog::backdrop{background:rgba(49,20,26,.64);backdrop-filter:blur(3px)}.roman-guide-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;padding:22px 28px;border-bottom:1px solid var(--line);background:#fff}.roman-guide-head h2{margin:0;color:var(--navy);font-size:clamp(1.6rem,3vw,2.2rem)}.dialog-close{display:grid;width:42px;height:42px;place-items:center;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--navy);cursor:pointer;font-size:1.8rem;line-height:1}.roman-guide-lead{margin:24px 28px 10px;padding:16px 18px;border-left:4px solid var(--orange);background:var(--orange2)}.roman-guide-section,.roman-rules{padding:12px 28px}.roman-guide-section h3,.roman-rules h3{margin:0 0 12px;color:var(--navy);font-size:1.25rem}.roman-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px}.roman-table{width:100%;border-collapse:collapse;white-space:nowrap}.roman-table th,.roman-table td{padding:10px 12px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}.roman-table tr:last-child th,.roman-table tr:last-child td{border-bottom:0}.roman-table th:last-child,.roman-table td:last-child{border-right:0}.roman-table thead th,.roman-table tbody th{background:#fff5f6;color:var(--navy)}.roman-table code,.contracted-grid code,.roman-rule-grid code{color:var(--orange);font:800 .92em/1.4 Consolas,Menlo,monospace}.compact-table td{font-family:Consolas,Menlo,monospace;font-weight:800;color:var(--orange)}.contracted-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.contracted-grid p{display:flex;justify-content:space-between;gap:12px;margin:0;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:#fbfdfe}.roman-rule-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.roman-rule-grid p{margin:0;padding:15px;border:1px solid var(--line);border-radius:12px}.roman-rule-grid strong,.roman-rule-grid span{display:block}.roman-rule-grid strong{margin-bottom:5px;color:var(--navy)}.roman-rule-grid .recommended-rule{border:2px solid var(--orange);background:var(--orange2)}.dialog-footer{position:sticky;bottom:0;padding:14px 28px 22px;background:linear-gradient(0deg,#fff 72%,rgba(255,255,255,0));text-align:center}.dialog-footer .secondary-button{margin:0}
@media(max-width:760px){.topbar{align-items:flex-start;gap:12px}.topbar-actions{flex-direction:column;align-items:flex-end}.roman-guide-button{font-size:.74rem}.contracted-grid,.roman-rule-grid{grid-template-columns:1fr}.roman-guide-head{padding:18px}.roman-guide-lead{margin:18px 18px 8px}.roman-guide-section,.roman-rules{padding:10px 18px}.roman-table th,.roman-table td{padding:8px;font-size:.82rem}.contracted-grid p{flex-direction:column;gap:2px}}
.roman-table .has-input-note,.contracted-grid .has-input-note{border-color:#e8ad3d;background:#fff8e8}.has-input-note small{display:block;margin-top:3px;color:#a14f00;font-size:.68rem;font-weight:800;white-space:normal}.compact-table .has-input-note small{font-family:"Noto Sans JP",sans-serif}.note-guide{margin:0 0 12px;color:var(--muted)}.note-guide span{display:inline-block;margin-right:7px;padding:2px 9px;border-radius:999px;background:#fff0c8;color:#8b4700;font-size:.78rem;font-weight:900}.choice-principles{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.choice-principles strong{padding:7px 11px;border-radius:999px;background:var(--orange2);color:var(--navy);font-size:.84rem}.input-reason-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.input-reason-grid article{padding:16px;border:1px solid var(--line);border-radius:13px;background:#fbfdfe}.input-reason-grid h4{margin:0 0 6px;color:var(--navy);font-size:1rem}.input-reason-grid p{margin:0;color:var(--muted);font-size:.9rem}.input-choice-reasons{margin-top:6px;padding-top:18px;border-top:2px solid var(--line)}
.single-guide-row{grid-template-columns:1fr}
.sentence-target-card>strong.has-chunks{flex-wrap:wrap}.sentence-target-card .sentence-chunk.is-current{border-color:var(--orange);background:var(--orange2);box-shadow:0 0 0 4px rgba(189,0,26,.1)}.sentence-target-card .sentence-chunk.is-complete{border-color:var(--green);background:#e9f6f0;color:var(--green)}
.sentence-inputs .sentence-input{width:100%}
.sentence-inputs{display:grid;grid-template-columns:1fr;gap:12px;width:min(100%,620px);margin:0 auto}.sentence-inputs .sentence-input{width:100%}
@media(max-width:760px){.input-reason-grid{grid-template-columns:1fr}.choice-principles{align-items:flex-start;flex-direction:column}.roman-table .has-input-note small{min-width:88px}}
.lesson-group-heading{grid-column:1/-1;margin-top:14px;padding:13px 16px;border-left:5px solid #3e7f91;border-radius:8px;background:#f5fbfd;color:var(--navy)}.lesson-group-heading:first-child{margin-top:0}.lesson-group-heading span,.lesson-group-heading strong,.lesson-group-heading small{display:block}.lesson-group-heading span{color:#3e7f91;font-size:.75rem;font-weight:900;letter-spacing:.06em}.lesson-group-heading strong{margin-top:2px;font-size:1.15rem}.lesson-group-heading small{margin-top:4px;color:var(--muted)}
.sentence-input-panel{display:none;max-width:760px;margin:0 auto;padding:24px;text-align:center}.sentence-mode .sentence-input-panel{display:block}.sentence-mode #typingPanel>.prompt-area,.sentence-mode #typingPanel>.guide-panel,.sentence-mode #typingPanel>.hand-zones,.sentence-mode #typingPanel>.home-position-guide,.sentence-mode #typingPanel>#keyboard,.sentence-mode #typingPanel>.finger-legend,.sentence-mode #typingPanel>#feedback,.sentence-mode #typingPanel>#pausePanel{display:none}.sentence-step{margin:0 0 14px;color:var(--muted);font-weight:700}.sentence-error-alert{margin:0 0 16px;padding:14px 18px;border:3px solid #c70023;border-radius:14px;background:#fff0f2;color:#8d0018;box-shadow:0 8px 22px rgba(199,0,35,.16)}.sentence-error-alert strong,.sentence-error-alert span{display:block}.sentence-error-alert strong{font-size:clamp(1.2rem,3vw,1.55rem)}.sentence-error-alert strong::before{content:"！";display:inline-grid;width:1.6em;height:1.6em;margin-right:8px;place-items:center;border-radius:50%;background:#c70023;color:#fff;font-size:.8em}.sentence-error-alert span{margin-top:5px;font-weight:700}.sentence-error-alert.is-shaking{animation:sentence-error-shake .35s ease}.sentence-target-card{padding:22px;border:1px solid var(--line);border-radius:18px;background:#fbfdfe}.sentence-target-card>span{display:block;color:var(--muted);font-size:.85rem;font-weight:800}.sentence-target-card>strong{display:block;margin:6px 0;color:var(--navy);font-size:clamp(2.2rem,7vw,4rem)}.sentence-target-card>strong.has-chunks{display:flex;align-items:stretch;justify-content:center;gap:10px;margin:14px 0 9px;font-size:clamp(1.65rem,5vw,3rem)}.sentence-chunk{display:flex;align-items:center;padding:7px 18px;border:2px solid #d8b0b8;border-radius:12px;background:#fff}.sentence-chunk-divider{width:3px;border-radius:3px;background:var(--orange)}.sentence-chunk-note{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:5px 10px;margin:0 0 12px!important;padding:8px 12px;border-radius:10px;background:#fff2d8!important}.sentence-chunk-note b{color:#8c3c00!important;font-size:.9rem!important}.sentence-chunk-note span{color:#674f3d;font-size:.85rem;font-weight:800}.sentence-target-card p{margin:0;color:var(--muted)}.sentence-target-card b{color:var(--orange);font-size:1.15rem}.sentence-input-label{display:block;margin:22px 0 8px;color:var(--navy);font-weight:900}.sentence-input{width:min(100%,560px);padding:15px 18px;border:2px solid #d9aab2;border-radius:12px;background:#fff;color:var(--navy);font:700 1.35rem/1.5 "Noto Sans JP",sans-serif;text-align:center;outline:none}.sentence-input:focus{border-color:var(--orange);box-shadow:0 0 0 4px rgba(199,0,35,.1)}.sentence-input[aria-invalid="true"]{border-color:#c70023;background:#fff8f9;box-shadow:0 0 0 4px rgba(199,0,35,.13)}.sentence-check-button{display:block;margin:14px auto 0}.sentence-feedback{min-height:1.6em;margin:14px 0 0;color:var(--muted);font-weight:700}.sentence-feedback.error{color:#c70023}.sentence-home-note{margin:10px 0 0;color:var(--muted);font-size:.9rem}@keyframes sentence-error-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}@media(max-width:760px){.sentence-input-panel{padding:18px 4px}.sentence-input{font-size:1.15rem}.sentence-target-card{padding:18px}.sentence-target-card>strong.has-chunks{gap:6px}.sentence-chunk{padding:5px 9px}.sentence-error-alert{padding:12px 10px}}