:root{--ink:#233c37;--muted:#596b64;--accent:#24594f;--accent-dark:#153f37;--paper:#f5f5ef;--white:#fffefa;--wash:#e9f0e8;--border:#d8dfd5;--clay:#a45c40;--green:#206146;--red:#a13936;--radius:22px}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--accent);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--clay);outline-offset:4px}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}button{color:inherit}button:disabled{cursor:default}.skip-link{position:absolute;top:-100px;left:16px;z-index:20;background:white;padding:12px}.skip-link:focus{top:12px}
.home-nav{max-width:1220px;margin:auto;padding:22px 38px;display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--border)}.home-nav a{text-decoration:none;font-size:12px;font-weight:700}.brand{letter-spacing:.03em}.brand span{color:var(--muted);font-weight:400;margin-left:9px}.container{max-width:1180px;margin:auto;padding:0 36px}.hero{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;padding:64px 0 58px;align-items:center;border-bottom:1px solid var(--border);margin-bottom:48px}.eyebrow{font-size:10px;letter-spacing:.16em;font-weight:750;color:var(--muted);margin-bottom:16px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--clay);margin-right:8px}.hero h1{font-size:clamp(36px,4vw,54px);font-family:"Hiragino Mincho ProN","Yu Mincho",serif;line-height:1.5;font-weight:600;letter-spacing:.05em;margin:20px 0 18px}.hero h1 span{color:var(--accent)}.hero-subtitle{font-size:17px;font-weight:700;letter-spacing:.05em;margin-bottom:12px}.hero-description{font-size:13px;color:var(--muted);line-height:2}.hero-stats{display:flex;gap:28px;margin-top:25px;font-size:11px;color:var(--muted)}.hero-stats strong{font-family:Georgia,serif;font-size:31px;font-weight:400;color:var(--accent);margin-right:5px}
.hero-visual{position:relative;height:330px;max-width:390px;width:100%;justify-self:center;background:radial-gradient(ellipse at center,#e4eee2 0%,#e4eee200 68%)}.orbit{position:absolute;left:50%;top:46%;border:1px solid #93b1a27a;border-radius:50%;width:260px;height:185px;transform:translate(-50%,-50%) rotate(-27deg)}.orbit-two{width:210px;height:270px;transform:translate(-50%,-50%) rotate(-24deg)}.mind-core{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);height:108px;width:108px;background:var(--accent);color:#f4f2de;border-radius:50%;display:grid;place-items:center;font-family:Georgia,serif;font-size:66px;box-shadow:0 14px 32px #274e4220}.mind-node{position:absolute;border:1px solid #d3dbcd;background:#fffef8;border-radius:30px;padding:10px 19px;font-size:12px;letter-spacing:.1em;box-shadow:0 4px 14px #2a4b3a08}.node-one{left:7%;top:27%}.node-two{right:5%;top:14%;color:var(--clay)}.node-three{right:11%;top:66%}.visual-caption{position:absolute;bottom:2px;left:7%;font-family:"Yu Mincho",serif;font-size:13px;letter-spacing:.1em;line-height:1.9;color:var(--muted)}
.setup-layout{display:grid;grid-template-columns:minmax(0,1fr) 358px;gap:36px 48px;align-items:start}.learning-panel{min-width:0}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:14px}.section-heading .eyebrow{margin-bottom:9px}.section-heading h2{font-size:23px;font-weight:600;letter-spacing:.04em;margin-bottom:12px}.small-label{font-size:11px;color:var(--muted);white-space:nowrap}.section-description{font-size:13px;color:var(--muted);margin-bottom:24px}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-grid button{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;min-height:97px;border:1px solid var(--border);border-radius:16px;background:var(--white);padding:18px 19px;text-align:left;transition:background .15s,border-color .15s}.topic-grid .filter-name{font-size:14px;font-weight:700}.filter-detail{font-size:10px;color:var(--muted);margin-top:6px;letter-spacing:.04em}.topic-grid button::after{content:'↗';position:absolute;right:16px;bottom:14px;font-size:15px;color:#71877c}.topic-grid button:first-child{grid-column:1/-1;min-height:80px;flex-direction:row;align-items:center;justify-content:space-between;padding-right:46px}.topic-grid button.active{border-color:var(--accent);background:var(--wash);box-shadow:inset 0 0 0 1px var(--accent)}.topic-grid button:enabled:hover{background:#edf2e9}.topic-grid button:first-child .filter-detail{margin:0}
.card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:28px}.setup-card{position:sticky;top:20px;box-shadow:0 12px 34px #243f3110}.setup-card>.eyebrow{color:var(--clay);margin-bottom:10px}.setup-card h2{font-size:20px;margin-bottom:8px}.card-description{font-size:12px;color:var(--muted);margin-bottom:23px}.setup-card h3,.setup-card label{font-size:11px;font-weight:700;display:block;margin:18px 0 9px;color:var(--muted);letter-spacing:.03em}.filter-buttons{display:flex;flex-wrap:wrap;gap:6px}.filter-buttons button{flex:1;min-height:43px;border:1px solid var(--border);border-radius:10px;background:transparent;padding:8px 6px;font-size:10px;white-space:nowrap;font-weight:650}.filter-buttons button.active{background:var(--wash);border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);color:var(--accent)}select{width:100%;min-width:0;padding:12px 30px 12px 12px;background:white;border:1px solid var(--border);border-radius:10px;color:var(--ink);font-size:12px;min-height:45px}.scope-box{background:var(--wash);padding:13px 15px;border-radius:12px;margin-top:16px}.scope-label{font-size:10px;color:var(--muted)}#scope{font-size:13px;font-weight:700;margin:3px 0 0;overflow-wrap:anywhere}.text-button{padding:5px 0 0;background:transparent;border:0;color:var(--muted);text-decoration:underline;text-underline-offset:3px;font-size:10px;min-height:29px}.count-buttons{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}.count-buttons button{flex:1;min-width:44px;padding:9px 5px;border:1px solid var(--border);background:transparent;border-radius:9px;font-size:11px;min-height:42px}.count-buttons button.active{background:var(--accent);color:white;border-color:var(--accent)}.primary{border:1px solid var(--accent);background:var(--accent);color:white;border-radius:12px;padding:14px 18px;font-weight:700;font-size:14px;min-height:52px}.primary:enabled:hover{background:var(--accent-dark)}.primary:disabled{opacity:.5}.start{width:100%;display:flex;align-items:center;justify-content:space-between;font-size:15px}.weak{border:1px solid #bb8c7350;border-radius:12px;background:#f6ece4;color:#81472f;width:100%;font-size:12px;font-weight:700;padding:12px;margin-top:12px;min-height:47px}.session-note{font-size:10px;line-height:1.9;color:var(--muted);margin:15px 0}.reading-link{display:block;text-align:center;font-size:11px;font-weight:650}.setup-footnote{grid-column:1/-1;border-top:1px solid var(--border);padding-top:22px;color:var(--muted);font-size:11px;line-height:1.9}.setup-footnote p{margin-bottom:7px}
.search-panel{margin-top:30px;padding:23px 0 12px;border-top:1px solid var(--border)}.search-panel h2{font-size:15px;margin-bottom:12px}.search{display:flex;gap:8px}.search input{min-width:0;flex:1;background:var(--white);border:1px solid var(--border);border-radius:10px;padding:12px 13px;font-size:12px}.search button{background:var(--accent);border:0;color:white;border-radius:10px;padding:10px 17px;font-size:12px;min-height:45px}.search-status{font-size:11px;color:var(--muted);margin:10px 0}.search-hit{border:1px solid var(--border);border-radius:12px;padding:13px 15px;background:var(--white);font-size:12px;margin:10px 0}.search-hit p{margin-top:12px;margin-bottom:0}.search-hit summary{font-weight:650}.search-clear{width:100%;padding:10px;border:1px solid var(--border);background:transparent;border-radius:10px;font-size:11px}#search-results>.primary{width:100%;font-size:12px}.reading-details{border-top:1px solid var(--border);padding:16px 0;font-size:12px}.reading-details p{margin:14px 0}summary{cursor:pointer;font-size:12px;font-weight:650;line-height:1.7}.group-list{padding:0;list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.group-list li{display:flex;justify-content:space-between;gap:8px;padding:9px 0;border-bottom:1px solid var(--border);font-size:11px}.group-list span{white-space:nowrap;color:var(--muted);font-size:10px}#reference-list{padding-left:18px;font-size:11px}#reference-list li{margin:9px 0}
body[data-view=quiz] .hero,body[data-view=result] .hero{display:none}.quiz-layout{max-width:760px;margin:42px auto}.quiz-topline{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:30px;font-size:11px;color:var(--muted)}.quiz-brand{text-decoration:none;font-weight:700}.quiz-bar{display:flex;justify-content:space-between;align-items:center;font-size:12px}.quiz-bar .eyebrow{margin-bottom:0;color:var(--clay)}.progress{height:5px;background:var(--border);border-radius:4px;margin:12px 0 25px;overflow:hidden}#progress-fill{background:var(--accent);height:100%;width:0}.question-card{padding:36px 40px}.question-label{font-size:11px;color:var(--muted);margin:0 0 14px}#question{font-size:23px;line-height:1.8;letter-spacing:.02em;font-weight:600;margin:0 0 28px;white-space:pre-line;overflow-wrap:anywhere}.choice{display:flex;align-items:center;gap:16px;width:100%;background:white;border:1px solid var(--border);border-radius:12px;padding:16px 18px;text-align:left;font-size:14px;font-weight:500;line-height:1.8;margin-bottom:10px;min-height:67px}.choice>span:last-child{min-width:0;overflow-wrap:anywhere}.mark{flex-shrink:0;width:29px;height:29px;display:grid;place-items:center;background:var(--paper);border-radius:50%;font-family:Georgia,serif;font-size:12px;color:var(--muted)}.choice:enabled:hover{border-color:var(--accent);background:#f2f6ed}.choice.correct{background:#e9f4ec;border-color:var(--green);box-shadow:inset 0 0 0 1px var(--green);color:#1a513b}.choice.wrong{background:#fbefec;border-color:var(--red);color:#8d302c}.choice.correct .mark{background:var(--green);color:white}.choice.wrong .mark{background:var(--red);color:white}.explanation{margin:24px 0 15px;padding:24px;background:var(--wash);border-radius:16px;overflow-wrap:anywhere}.explanation h3{font-size:16px;margin:0 0 20px}.explanation-kicker{font-size:10px;font-weight:750;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}#explanation-text{font-size:13px;line-height:2;white-space:pre-line;margin-bottom:20px}.explanation-links{display:flex;flex-direction:column;gap:10px;font-size:11px}.secondary{background:transparent;border:1px solid var(--border);border-radius:12px;color:var(--muted);padding:13px 18px;font-size:12px;min-height:49px}#quiz .primary,#quiz .secondary{width:100%;margin-top:12px}
.result{max-width:760px;margin:44px auto;text-align:center;padding:42px}.result>.eyebrow{color:var(--clay)}.result h2{font-size:25px;font-weight:600}#result-ring{display:grid;place-items:center;width:132px;height:132px;border:5px solid var(--accent);border-radius:50%;margin:26px auto;background:var(--wash);font-size:36px;font-family:Georgia,serif;color:var(--accent)}#result-summary{font-size:13px;color:var(--muted)}.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:26px 0}.result-grid>div{background:var(--paper);padding:16px 6px;border-radius:12px}.result-grid strong{display:block;font-size:27px;font-weight:500;color:var(--accent)}.result-grid span{font-size:10px;color:var(--muted)}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 25px}.result #review{text-align:left;border-top:1px solid var(--border);padding-top:20px}.review-item{text-align:left;border-bottom:1px solid var(--border);padding:17px 0;font-size:13px}.review-item p{margin:12px 0;line-height:1.9}.review-item summary{font-size:13px}.result .session-note{margin-top:25px}.study-container{max-width:780px;margin:auto;padding:45px 26px}.study-container>h1{font-size:28px}.study-container section{margin-top:35px}.study-container section>h2{font-size:19px;border-bottom:1px solid var(--border);padding-bottom:12px}.study-answer{font-weight:700;color:var(--accent)}footer{display:flex;justify-content:space-between;gap:15px;padding:30px 0 32px;margin-top:36px;border-top:1px solid var(--border);font-size:10px;color:var(--muted)}footer a{text-decoration:none}
@media(max-width:1000px){.setup-layout{grid-template-columns:minmax(0,1fr) 330px;gap:30px}.container{padding:0 26px}.hero{gap:10px}.hero-visual{transform:scale(.9)}.setup-card{padding:24px}}
@media(max-width:760px){.home-nav{padding:18px 22px}.brand span{display:none}.container{padding:0 22px}.hero{padding:34px 0 30px;gap:15px;grid-template-columns:1fr 160px;margin-bottom:30px}.hero h1{font-size:33px;margin:15px 0}.hero-subtitle{font-size:14px}.hero-description{font-size:11px}.hero-stats{gap:15px;margin-top:16px}.hero-stats strong{font-size:25px}.hero-visual{height:250px;transform:none}.mind-core{width:75px;height:75px;font-size:46px}.orbit{width:150px;height:125px}.orbit-two{width:120px;height:185px}.mind-node{padding:5px 10px;font-size:9px}.node-one{left:-2%;top:22%}.node-two{right:-2%;top:14%}.node-three{right:0;top:68%}.visual-caption{font-size:10px;left:0;bottom:3px}.setup-layout{grid-template-columns:1fr;gap:28px}.setup-card{position:static;padding:26px;grid-row:2}.learning-panel{display:contents}.section-heading,.section-description{grid-column:1}.section-heading{margin-bottom:-20px}.section-description{margin-bottom:-6px}.topic-grid{grid-column:1}.search-panel,.reading-details{grid-column:1}.search-panel{grid-row:6;margin-top:0}.setup-card{grid-row:4}.setup-footnote{grid-column:1;grid-row:10}.card-description br{display:none}.filter-buttons button{font-size:12px;min-height:46px}.setup-card h3,.setup-card label{font-size:12px}.count-buttons button{font-size:12px;min-height:44px}.question-card{padding:27px}.quiz-layout{margin-top:28px}.quiz-topline{margin-bottom:22px}#question{font-size:20px}.result{padding:28px;margin-top:28px}.result h2{font-size:22px}.result-actions{grid-template-columns:1fr}footer{flex-wrap:wrap;justify-content:center;text-align:center}.desktop-only{display:none}}
@media(max-width:450px){.container{padding:0 16px}.home-nav{padding:16px}.home-nav a{font-size:10px}.hero{position:relative;grid-template-columns:1fr;padding:31px 3px 28px}.hero-copy{z-index:1}.hero-visual{position:absolute;right:-2px;top:44px;width:136px;height:200px;opacity:.65}.hero h1{font-size:34px;line-height:1.55}.hero-description{max-width:260px;position:relative}.hero-subtitle{font-size:14px}.hero>.hero-copy>.eyebrow{font-size:8px;letter-spacing:.1em}.hero-visual .visual-caption{display:none}.hero-visual .node-one{left:-4%;top:16%}.hero-visual .node-two{right:-2%;top:4%}.hero-visual .node-three{right:0;top:77%}.hero-visual .orbit{width:122px;height:110px}.hero-visual .orbit-two{width:110px;height:166px}.hero-visual .mind-core{height:67px;width:67px;font-size:41px}.hero-stats{position:relative;gap:25px}.section-heading h2{font-size:21px}.section-heading .eyebrow{font-size:9px}.small-label{font-size:10px}.topic-grid{gap:9px}.topic-grid button{min-height:94px;padding:16px 13px}.topic-grid .filter-name{font-size:12px}.topic-grid button:first-child{min-height:68px}.topic-grid button::after{right:12px;bottom:10px}.setup-card{padding:24px 20px}.question-card{padding:23px 20px}#question{font-size:19px;margin-bottom:23px}.choice{font-size:13px;gap:11px;padding:13px;min-height:64px}.mark{width:27px;height:27px}.explanation{padding:20px 17px}#explanation-text{font-size:12px}.group-list{grid-template-columns:1fr}.result{padding:25px 20px}.study-container{padding:30px 20px}.study-container>h1{font-size:23px}}
@media(max-width:350px){.hero h1{font-size:31px}.hero-visual{right:-4px;opacity:.36;width:112px}.hero-description{font-size:10px}.filter-buttons button{font-size:10px}.card-description{font-size:11px}.topic-grid .filter-name{font-size:11px}.hero-stats{gap:20px}.result h2{font-size:19px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* Keep the decorative orbit inside the hero and preserve a compact mobile order. */
.hero{overflow:clip}
@media(max-width:760px){.search-panel{grid-row:5}.learning-panel>.reading-details{grid-row:6}.learning-panel>.reading-details+.reading-details{grid-row:7}.setup-footnote{grid-row:8}}
@media(max-width:450px){.hero-visual{right:0;top:65px;width:105px;height:185px}.hero-visual .node-one{display:none}.hero-visual .node-two{right:0;top:0}.hero-visual .node-three{right:0;top:78%}}
@media(max-width:350px){.hero-visual{display:none}}