/* 外部フォントやCDNに依存しない静的スタイル */

:root{color-scheme:light;--ink:#28243a;--muted:#77748a;--purple:#7058e8;--purple-dark:#5841cf;--purple-pale:#f0edff;--mint:#dff8ee;--mint-ink:#23805e;--yellow:#fff1c8;--line:#ebe8f2;--paper:#fff;--page:#f8f7fc;--shadow:0 14px 36px rgba(53,43,91,.075);font-family:'Nunito','Noto Sans JP',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 7% 0%,#f0edff 0,transparent 28rem),radial-gradient(ellipse at 95% 35%,#effbf6 0,transparent 30rem),var(--page);color:var(--ink);font-size:15px;line-height:1.6}button,input{font:inherit}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #a995ff;outline-offset:3px}button:disabled{cursor:not-allowed!important;opacity:.58}[hidden]{display:none!important}a{color:inherit}.page-shell{width:min(1120px,calc(100% - 48px));margin:0 auto}.topbar{height:82px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}.brand-mark{position:relative;display:grid;place-items:center;width:43px;height:43px;border-radius:14px;background:linear-gradient(145deg,#8874f5,#654ce0);color:#fff;font-size:19px;font-weight:950;box-shadow:0 8px 18px #7058e83d;transform:rotate(-4deg)}.brand-mark i{position:absolute;right:-4px;top:-7px;color:#ffe28a;font-size:13px;font-style:normal}.brand-name{font-size:19px;font-weight:900;letter-spacing:-.04em}.brand-name b{display:inline-grid;place-items:center;width:24px;height:24px;margin-left:2px;border-radius:8px;background:#fff0c8;color:#95681a;font-size:13px}.top-stats{display:flex;gap:10px}.stat-pill{display:flex;align-items:center;gap:8px;min-width:94px;padding:7px 12px;border:1px solid #ece9f4;border-radius:14px;background:#ffffffd9;box-shadow:0 3px 10px #352b5b08}.stat-icon{font-size:17px}.stat-pill b{font-size:14px;font-weight:900}.stat-pill small{margin-left:3px;color:var(--muted);font-size:10px;font-weight:800}
.hero{position:relative;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr);align-items:center;min-height:346px;margin:10px 0 32px;padding:42px 54px 58px;overflow:hidden;border:1px solid #e8e2ff;border-radius:28px;background:radial-gradient(circle at 83% 30%,#e2dcff 0,transparent 17rem),linear-gradient(115deg,#fff 20%,#f2efff 100%);box-shadow:var(--shadow)}.hero:before,.hero:after{position:absolute;content:'';border-radius:50%;pointer-events:none}.hero:before{width:220px;height:220px;right:-75px;top:-115px;border:1px solid #dcd5ff}.hero:after{width:155px;height:155px;left:43%;bottom:-115px;background:#fff8dc80}.hero-copy{position:relative;z-index:2}.eyebrow{display:flex;align-items:center;gap:8px;margin:0;color:#7159df;font-size:11px;font-weight:900;letter-spacing:.08em}.eyebrow-dot{width:8px;height:8px;border-radius:50%;background:#59c99c;box-shadow:0 0 0 4px #dcf7eb}.hero h1{margin:13px 0 12px;font-size:clamp(29px,4vw,43px);line-height:1.35;font-weight:900;letter-spacing:-.055em}.hero h1 span{color:var(--purple)}.hero-lede{margin:0;color:#706d82;font-size:14px;font-weight:650;line-height:1.85}.hero-actions{display:flex;align-items:center;gap:16px;margin-top:23px}.button{min-height:47px;padding:11px 19px;border:0;border-radius:14px;font-size:13px;font-weight:900;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.button:hover:not(:disabled){transform:translateY(-2px)}.button-primary{background:linear-gradient(120deg,#8069f2,#654bdd);color:#fff;box-shadow:0 8px 18px #7058e83a}.button-primary:hover:not(:disabled){background:linear-gradient(120deg,#7159e7,#5841cf);box-shadow:0 11px 22px #7058e84a}.button-primary span,.button-check span{margin-left:8px;font-size:17px}.button-secondary{border:1px solid #e6e1f2;background:#fff;color:#5f4cbb}.session-note{color:#8a8799;font-size:11px;font-weight:750}.hero-art{position:relative;justify-self:center;width:min(100%,360px);height:245px}.orbit{position:absolute;left:50%;top:48%;border:1.5px dashed #b8aaff;transform:translate(-50%,-50%) rotate(-18deg);border-radius:50%}.orbit-one{width:270px;height:115px}.orbit-two{width:215px;height:175px;transform:translate(-50%,-50%) rotate(48deg);border-color:#c5baff}.kanji-planet{position:absolute;left:50%;top:49%;display:flex;align-items:center;gap:6px;padding:12px 20px;border:4px solid #fff;border-radius:22px;background:linear-gradient(145deg,#9a86fb,#6f57e8);color:#fff;font-size:34px;font-weight:950;box-shadow:0 10px 24px #6650d644;transform:translate(-50%,-50%) rotate(-7deg);z-index:1}.kanji-planet i{color:#fff3b8;font-size:27px;font-style:normal}.star-card{position:absolute;z-index:2;display:grid;place-items:center;width:45px;height:51px;border:2px solid #fff;border-radius:13px;background:#fff;color:#6f57e8;font-size:23px;font-weight:950;box-shadow:0 7px 16px #5d4a9b20;animation:float 4s ease-in-out infinite}.star-card-one{left:30px;top:61px;transform:rotate(-12deg)}.star-card-two{right:35px;bottom:48px;background:#e4f9ef;color:#28805e;transform:rotate(10deg);animation-delay:.8s}.spark{position:absolute;color:#f4be40;font-size:23px;animation:twinkle 2s ease-in-out infinite}.spark-a{left:35px;top:31px}.spark-b{right:35px;top:44px;color:#8873ed;animation-delay:.8s}.spark-c{right:54px;bottom:25px;animation-delay:1.2s}.art-caption{position:absolute;left:50%;bottom:0;padding:6px 12px;border:1px solid #eee9ff;border-radius:999px;background:#fff;color:#77718d;font-size:10px;font-weight:850;transform:translateX(-50%);white-space:nowrap}.hero-bottom{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;gap:9px;padding:12px 25px;background:#ffffffb8;border-top:1px solid #ece8fa;color:#77718d;font-size:11px}.hero-bottom b{color:#5142a7;font-weight:900}.hero-bottom-star{margin-left:auto;color:#e3ae34;font-size:18px}
.mission-section,.record-section,.quiz-section,.result-section,.kanji-reference{margin:0 0 32px}.section-heading,.play-heading,.review-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:15px}.section-kicker{margin:0 0 4px;color:#8a7ae0;font-size:9px;font-weight:900;letter-spacing:.15em}.section-heading h2,.play-heading h2{margin:0;font-size:22px;font-weight:900;letter-spacing:-.04em}.section-aside{color:#8c899b;font-size:11px;font-weight:750}.topic-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.topic-card{position:relative;display:flex;align-items:center;gap:12px;min-height:82px;padding:13px 15px;border:1px solid #ebe8f2;border-radius:17px;background:#fff;text-align:left;cursor:pointer;box-shadow:0 4px 13px #352b5b07;transition:transform .17s,border-color .17s,box-shadow .17s}.topic-card:hover{transform:translateY(-2px);border-color:#c9befa;box-shadow:0 9px 18px #44347c12}.topic-symbol{flex:0 0 auto;display:grid;place-items:center;width:43px;height:43px;border-radius:14px;font-size:18px;font-weight:950}.reading-symbol{background:#f0edff;color:#6f57e7}.writing-symbol{background:#e8f7ee;color:#358e6a}.meaning-symbol{background:#fff1d8;color:#bd8425}.topic-copy{display:flex;min-width:0;flex:1;flex-direction:column;gap:3px}.topic-copy b{font-size:12px;font-weight:900;line-height:1.35}.topic-copy small{color:#918da0;font-size:10px;font-weight:650;line-height:1.35}.topic-arrow{color:#ada8bd;font-size:17px}.topic-card:hover .topic-arrow{color:var(--purple)}.curriculum-note{margin:12px 2px 0;color:#8a8797;font-size:11px;line-height:1.7}
.record-card{display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:16px;padding:18px 21px;border:1px solid #e8e4f2;border-radius:20px;background:linear-gradient(105deg,#fff,#f9f7ff 75%);box-shadow:0 6px 18px #5c472b08}.record-icon{display:grid;place-items:center;width:49px;height:49px;border-radius:16px;background:#f0edff;font-size:24px}.record-copy .section-kicker{color:#7560d9}.record-copy h2{margin:0 0 3px;font-size:14px;font-weight:900}.record-copy p:last-child{max-width:510px;margin:0;color:#77738b;font-size:11px;line-height:1.6}.record-numbers{display:flex;gap:17px}.record-numbers div{display:flex;min-width:58px;flex-direction:column;align-items:center}.record-numbers b{font-size:20px;font-weight:950;color:#5e49c5;font-variant-numeric:tabular-nums}.record-numbers small{color:#918da0;font-size:9px;font-weight:800}.text-button{padding:7px 10px;border:0;border-radius:9px;background:transparent;color:#7d778f;font-size:11px;font-weight:850;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.text-button:hover{background:#eeebf7;color:#5444a8}.reset-button{display:block;margin:8px 0 0 auto;color:#9691a2}
.play-heading{align-items:center}.play-heading .section-kicker{margin:0 0 3px}.play-heading h2{font-size:21px}.quiz-card{padding:23px 26px 27px;border:1px solid #e9e6f0;border-radius:22px;background:#fff;box-shadow:var(--shadow)}.quiz-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.question-topic{display:inline-flex;align-items:center;min-height:25px;padding:4px 10px;border-radius:999px;background:#f0edff;color:#654fca;font-size:10px;font-weight:900}.question-count{color:#898599;font-size:11px;font-weight:750}.question-count b{color:var(--ink);font-size:15px;font-weight:950}.progress-track{height:7px;overflow:hidden;border-radius:99px;background:#efedf3}.progress-track span{display:block;width:0;height:100%;border-radius:99px;background:linear-gradient(90deg,#8874f4,#5a43d0);transition:width .3s ease}.question-area{padding-top:23px}.question-instruction{margin:0 0 7px;color:#827e91;font-size:12px;font-weight:800}.question-prompt{min-height:52px;margin:0 0 20px;font-size:clamp(23px,4vw,33px);font-weight:900;line-height:1.55;letter-spacing:.01em}.answer-label{display:block;margin:0 0 6px;font-size:12px;font-weight:900}.answer-row{display:flex;align-items:stretch;gap:9px}.answer-row input,.kanji-search{width:100%;min-height:48px;padding:10px 13px;border:1px solid #dfdbe9;border-radius:12px;background:#fff;color:var(--ink);font-size:16px}.answer-row input::placeholder,.kanji-search::placeholder{color:#aaa6b7}.answer-row input:focus,.kanji-search:focus{border-color:#9a88f0;outline:3px solid #eeeaff}.button-check{flex:0 0 auto;background:#6851df;color:#fff;box-shadow:0 6px 13px #7058e82e}.button-check:hover{background:#5841cf}.answer-hint{margin:8px 0 0;color:#928ea0;font-size:10px}.choice-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.choice-button{min-height:58px;padding:12px 14px;border:1px solid #e8e4f2;border-radius:13px;background:#fff;text-align:left;font-size:13px;font-weight:750;line-height:1.5;cursor:pointer;transition:border-color .16s,background .16s,transform .16s}.choice-button:hover{transform:translateY(-1px);border-color:#a996f2;background:#faf9ff}.choice-button:disabled{cursor:default}.choice-button.is-correct{border-color:#87d0af;background:#e9f9f1;color:#246b50}.choice-button.is-wrong{border-color:#efb0b0;background:#fff1f1;color:#9c4141}.feedback{margin-top:18px;padding:16px 17px;border:1px solid #d9eee3;border-radius:15px;background:#f1fbf5}.feedback.is-wrong{border-color:#f1e3c2;background:#fffaf0}.feedback-heading{display:flex;align-items:center;gap:8px;color:#268059;font-size:15px}.feedback.is-wrong .feedback-heading{color:#a2711f}.feedback-icon{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:#d8f5e5;font-size:15px}.feedback.is-wrong .feedback-icon{background:#fff0cb}.feedback-answer{margin:8px 0 2px;font-size:14px;font-weight:850}.feedback-note{margin:3px 0 0;color:#6e6a7d;font-size:12px;line-height:1.7}.next-button{margin-top:14px}.progress-section{scroll-margin-top:20px}
.result-card{position:relative;padding:28px 24px 27px;overflow:hidden;border:1px solid #e8e2ff;border-radius:24px;background:radial-gradient(circle at 80% 20%,#e9e5ff,transparent 15rem),linear-gradient(120deg,#fff,#f8f6ff);text-align:center;box-shadow:var(--shadow)}.result-medal{display:grid;place-items:center;width:54px;height:54px;margin:0 auto 8px;border:4px solid #fff;border-radius:18px;background:#fff0c8;color:#c28c26;font-size:26px;box-shadow:0 5px 15px #7253b322}.result-card .section-kicker{color:#7560d9}.result-card h2{margin:0;font-size:26px;font-weight:950}.result-score{display:flex;align-items:baseline;justify-content:center;gap:5px;margin:9px 0;color:#6350d0}.result-score b{font-size:48px;font-weight:950;line-height:1}.result-score span{font-size:13px;font-weight:850}.result-message{margin:0 auto 17px;color:#767186;font-size:12px}.result-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:9px}.review-panel{margin-top:19px;padding:22px 23px;border:1px solid #e8e4f2;border-radius:20px;background:#fff}.review-heading{align-items:center;margin-bottom:12px}.review-heading h3{margin:0;font-size:17px;font-weight:900}.review-count{padding:5px 10px;border-radius:999px;background:#f0edff;color:#6b54dc;font-size:10px;font-weight:900}.review-list{display:grid;gap:9px;margin:0;padding:0;list-style:none}.review-list li{padding:12px 14px;border:1px solid #f0edf5;border-radius:12px;background:#fcfbfe}.review-question{margin:0 0 5px;font-size:12px;font-weight:850}.review-answer{margin:0;color:#5e49c5;font-size:12px;font-weight:900}.review-note{margin:4px 0 0;color:#817c90;font-size:10px;line-height:1.6}.review-empty{margin:0;padding:15px;border-radius:12px;background:#f0faf4;color:#368361;text-align:center;font-size:12px;font-weight:800}
.kanji-reference details{border:1px solid #e9e5f0;border-radius:18px;background:#fff;box-shadow:0 4px 14px #352b5b07}.kanji-reference summary{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:17px 19px;cursor:pointer;list-style:none}.kanji-reference summary::-webkit-details-marker{display:none}.kanji-reference summary>span:first-child{display:flex;flex-direction:column}.kanji-reference summary b{font-size:15px;font-weight:900}.kanji-reference summary .section-kicker{margin-bottom:1px}.kanji-count{display:flex;align-items:center;gap:10px;color:#7163bd;font-size:11px;font-weight:900}.kanji-count i{font-size:18px;font-style:normal;transition:transform .2s}.kanji-reference details[open] .kanji-count i{transform:rotate(45deg)}.kanji-reference-body{padding:0 19px 19px;border-top:1px solid #f0edf5}.kanji-reference-body>p{margin:14px 0;color:#827e91;font-size:11px}.kanji-search{max-width:330px;min-height:40px;font-size:13px}.kanji-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:7px;margin-top:13px}.kanji-cell{display:grid;place-items:center;aspect-ratio:1;border:1px solid #eeeaf6;border-radius:10px;background:#faf9fd;color:#433b72;font-size:20px;font-weight:850;transition:background .15s,border-color .15s,transform .15s}.kanji-cell:hover{transform:translateY(-2px);border-color:#cfc5fa;background:#f2efff}.kanji-source{font-size:10px!important;color:#9994a5!important}.empty-search{grid-column:1/-1;padding:15px;color:#8c879b;text-align:center;font-size:12px}.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}
footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:17px 3px 26px;color:#9590a2;font-size:10px;font-weight:700}.footer-mark{color:#5e4abe;font-weight:900}.toast{position:fixed;z-index:20;left:50%;bottom:20px;max-width:min(90vw,500px);padding:11px 16px;border:1px solid #e7e2f1;border-radius:12px;background:#fff;color:#514b64;font-size:12px;font-weight:800;box-shadow:0 8px 24px #352b5b18;opacity:0;pointer-events:none;transform:translate(-50%,12px);transition:opacity .2s,transform .2s}.toast.is-visible{opacity:1;transform:translate(-50%,0)}
@keyframes float{0%,100%{translate:0 0}50%{translate:0 -7px}}@keyframes twinkle{0%,100%{opacity:.55;scale:.9}50%{opacity:1;scale:1.12}}
@media(max-width:760px){.page-shell{width:min(100% - 30px,600px)}.topbar{height:70px}.brand-name{font-size:16px}.stat-pill{min-width:75px;padding:6px 8px}.hero{grid-template-columns:1fr;min-height:0;margin-top:8px;padding:29px 25px 58px}.hero-art{width:290px;height:210px;margin-top:7px}.hero h1{font-size:35px}.hero-bottom{padding:10px 16px}.topic-list{grid-template-columns:1fr}.topic-card{min-height:72px}.record-card{grid-template-columns:44px 1fr;gap:12px;padding:15px}.record-icon{width:43px;height:43px}.record-numbers{grid-column:2;justify-content:flex-start;margin-top:2px}.record-numbers div{align-items:flex-start}.quiz-card{padding:18px 16px 20px}.question-area{padding-top:18px}.question-prompt{font-size:24px}.answer-row{flex-direction:column}.answer-row input,.button-check{width:100%}.choice-list{grid-template-columns:1fr}.kanji-grid{grid-template-columns:repeat(8,minmax(0,1fr))}.result-actions{flex-direction:column}.result-actions .button{width:100%}footer{align-items:flex-start;flex-direction:column;gap:4px;padding-bottom:20px}}
@media(max-width:420px){.page-shell{width:calc(100% - 22px)}.topbar{gap:8px}.brand{gap:7px}.brand-mark{width:38px;height:38px}.brand-name{font-size:14px}.top-stats{gap:5px}.stat-pill{min-width:65px;gap:5px;padding:5px 6px}.stat-icon{font-size:14px}.stat-pill b{font-size:12px}.stat-pill small{font-size:9px}.hero{padding-right:18px;padding-left:18px}.hero-actions{align-items:flex-start;flex-direction:column;gap:9px}.hero-art{width:260px}.hero-bottom{gap:6px;font-size:10px}.record-card{grid-template-columns:38px 1fr}.record-icon{width:38px;height:38px;font-size:20px}.record-copy p:last-child{font-size:10px}.record-numbers{gap:25px}.kanji-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.kanji-cell{font-size:18px}.review-panel{padding:17px 14px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}