@font-face{font-family:"Noto Sans JP";src:url("/fonts/NotoSansJP-Regular.ttf") format("truetype");font-weight:400;font-style:normal;font-display:swap}
:root{--ink:#18372e;--green:#126c53;--green-dark:#0d513e;--mint:#e9f5ef;--line:#dae5de;--muted:#64776e;--paper:#fff;--orange:#e88b47;--bg:#f8faf7;font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #e99e26;outline-offset:4px}.header{height:100px;max-width:1320px;margin:auto;padding:20px 48px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:800;letter-spacing:.025em}.brand-mark{display:grid;place-items:center;background:var(--green);color:white;width:47px;height:47px;border-radius:15px;transform:rotate(-7deg);font-size:35px;font-weight:400}.brand-accent{color:var(--green)}.brand small{display:block;font-size:10px;font-weight:500;letter-spacing:.17em;margin-top:4px}.guide-button{border:0;background:transparent;font-size:14px;color:var(--muted);display:flex;gap:9px;align-items:center}.guide-button span{border:1px solid #a0b0a7;border-radius:50%;width:21px;height:21px;display:grid;place-items:center}main{max-width:1224px;margin:auto;padding:0 0 55px}.intro{display:flex;align-items:center;justify-content:space-between;padding:35px 4px 42px;border-bottom:1px solid var(--line)}.eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--green)}h1{font-size:38px;line-height:1.5;letter-spacing:.03em;margin:9px 0 13px;font-weight:800}h1 span{color:var(--green)}.intro p{color:var(--muted);font-size:14px;line-height:1.9;margin:0}.intro-note{border:1px solid #d0e6d9;background:var(--mint);padding:23px 25px;display:flex;gap:16px;align-items:center;border-radius:14px;transform:rotate(-2deg)}.intro-note strong{font-size:14px}.intro-note p{font-size:12px;margin-top:6px}.infinity{font-family:Georgia,serif;font-size:66px;line-height:1;color:var(--green);margin-top:-7px}.library{padding-top:32px}.section-heading,.results-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.section-heading h2{font-size:18px;letter-spacing:.04em;margin:0 0 20px}.meta{font-size:12px;color:var(--muted)}.section-heading .meta{margin-bottom:20px}.grades{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.grade{border:1px solid var(--line);border-bottom-width:3px;background:white;border-radius:10px;padding:13px 10px;color:var(--ink);display:flex;gap:7px;align-items:baseline;justify-content:center;transition:background .15s,transform .15s}.grade:hover{transform:translateY(-2px);background:#f0f7f2}.grade b{font-size:26px;font-weight:750}.grade span{font-size:14px}.grade[aria-pressed=true]{background:var(--green);color:white;border-color:var(--green-dark);box-shadow:0 4px 10px #126c531a}.library-tools{padding:25px 0 18px}.categories{display:flex;gap:8px;flex-wrap:wrap}.categories button{border:0;border-radius:6px;background:transparent;padding:9px 15px;font-size:13px;color:var(--muted)}.categories button[aria-pressed=true]{background:#e6eee8;color:var(--green-dark);font-weight:700}.categories button:hover{background:#edf3ee}.results-heading{margin:0 0 17px}.results-heading h3{font-size:16px;margin:0}.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.topic-card{position:relative;display:flex;flex-direction:column;align-items:stretch;min-height:216px;padding:22px 23px 0;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);text-align:left;box-shadow:0 3px 0 #dce5dd35;transition:border-color .15s,box-shadow .15s,transform .15s}.topic-card:hover{border-color:#88b5a0;box-shadow:0 7px 18px #18372e0c;transform:translateY(-2px)}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.subject{font-size:11px;font-weight:600;color:var(--green);background:var(--mint);padding:4px 8px;border-radius:4px}.card-code{font-size:11px;color:#88958d;letter-spacing:.07em}.topic-card h4{font-size:17px;line-height:1.6;margin:0 0 7px;letter-spacing:.015em}.topic-card p{font-size:12px;color:var(--muted);margin:0 0 18px;line-height:1.8}.card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;border-top:1px solid #edf0eb;padding:13px 0;font-size:11px;color:var(--muted)}.card-action{font-size:12px;color:var(--green);font-weight:700}.card-action i{font-style:normal;margin-left:8px}.topic-card:nth-child(5n+2) .subject{background:#fdf0d8;color:#8f631b}.topic-card:nth-child(5n+3) .subject{background:#edf0fc;color:#5a63a3}.howto{display:grid;grid-template-columns:repeat(3,1fr);margin-top:50px;padding:25px 0;border-top:1px solid var(--line);gap:30px}.howto>div{position:relative;padding-left:46px}.step{position:absolute;left:0;top:4px;font-family:Georgia,serif;font-style:italic;color:#85a691;font-size:27px}.howto h3{font-size:14px;margin:6px 0 7px}.howto p{font-size:12px;color:var(--muted);margin:0}footer{border-top:1px solid var(--line);padding:32px 24px 36px;text-align:center;background:#eff4ed}.footer-brand{font-size:17px;font-weight:700}footer p{font-size:12px;color:var(--muted);margin:15px 0 8px}footer small{font-size:10px;color:var(--muted)}dialog{border:0;max-width:1050px;width:calc(100% - 40px);padding:0;border-radius:16px;color:var(--ink);box-shadow:0 25px 100px #18372e35;max-height:92dvh}dialog::backdrop{background:#102c2460;backdrop-filter:blur(3px)}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:24px 30px;border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:2}.dialog-top h2{font-size:21px;margin:5px 0 0}.icon-button{border:1px solid var(--line);background:white;border-radius:50%;width:36px;height:36px;font-size:25px;color:var(--muted);flex-shrink:0}.dialog-body{display:grid;grid-template-columns:1fr 1fr}.preview-side{background:#edf1eb;padding:22px 28px}.preview-toolbar{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:16px}.paper{background:white;aspect-ratio:210/297;box-shadow:0 3px 10px #102c2410;overflow:hidden}.paper svg{display:block;width:100%;height:100%}.preview-caption{font-size:11px;text-align:center;color:var(--muted);margin-top:16px}.download-side{padding:25px 28px}.download-block h3{font-size:18px;margin:10px 0}.download-block p{font-size:12px;color:var(--muted);line-height:1.8;margin:0 0 18px}.option-label{font-size:11px;background:#f4f0e5;color:#8a6c2d;border-radius:4px;padding:4px 7px}.option-label.green{background:var(--mint);color:var(--green)}.split-buttons{display:grid;grid-template-columns:1fr 1fr;gap:10px}.button{display:flex;align-items:center;justify-content:center;gap:13px;border:1px solid var(--green);padding:12px 13px;border-radius:7px;font-size:13px;font-weight:700;cursor:pointer;line-height:1.5}.primary{background:var(--green);color:white}.primary:hover{background:var(--green-dark)}.outline{color:var(--green);background:white}.outline:hover{background:var(--mint)}.button:disabled{opacity:.6;cursor:wait}.more-block{border-top:1px solid var(--line);margin-top:25px;padding-top:25px}.small-infinity{font-size:28px;font-family:Georgia,serif;float:right;color:var(--green);line-height:1}.field-label{font-size:13px;font-weight:700;display:flex;justify-content:space-between;margin-bottom:10px}.field-label span{font-weight:400;color:var(--muted);font-size:12px}.page-control{border:1px solid var(--line);border-radius:7px;display:flex;align-items:center;overflow:hidden;height:47px}.page-control button{width:48px;height:100%;background:#f5f8f4;border:0;color:var(--green);font-size:21px}.page-control input{appearance:textfield;width:60px;flex:1;min-width:0;border:0;text-align:right;background:white;font-size:20px;font-weight:700;color:var(--ink);padding:8px}.page-control input::-webkit-inner-spin-button{appearance:none}.page-control>span{font-size:12px;color:var(--muted);padding-right:22px}.presets{display:flex;gap:6px;justify-content:space-between;margin-top:10px}.presets button{flex:1;font-size:11px;border:1px solid var(--line);border-radius:5px;padding:7px 2px;background:white;color:var(--muted)}.presets .active{background:var(--mint);color:var(--green);border-color:#98c9af}.download-block p.summary{font-size:12px;margin:16px 0}.generate{width:100%}.download-block p.small-note{font-size:10px;line-height:1.8;margin:12px 0 0}.error{color:#aa3030!important}.error:empty{display:none}#generation-status{font-size:12px;color:var(--green);margin-top:12px;line-height:1.7}#generated-downloads:not([hidden]){display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}.guide-dialog{max-width:600px}.guide-dialog ol{padding:10px 35px 10px 55px;font-size:15px;line-height:2}.guide-dialog li{padding:6px}.guide-dialog>p{font-size:13px;color:var(--muted);padding:0 35px 24px;line-height:1.8}.mobile-only{display:none}@media(min-width:1450px){main{max-width:1240px}.intro{padding-top:42px;padding-bottom:48px}.header{max-width:1336px}.topic-card{min-height:225px}}@media(max-width:1300px){main{margin:0 42px}.header{padding:20px 42px}.intro-note{padding:20px}.intro h1{font-size:34px}}@media(max-width:1000px){.intro-note{display:none}.topics{grid-template-columns:repeat(2,1fr)}.dialog-top{padding:20px}.preview-side,.download-side{padding:20px}.download-block h3{font-size:16px}}@media(max-width:680px){.header{height:84px;padding:16px 20px}.brand{font-size:18px;gap:9px}.brand small{font-size:8px}.brand-mark{width:39px;height:39px;font-size:28px;border-radius:12px}.guide-button{font-size:12px}.guide-button span{display:none}main{margin:0 20px;padding-bottom:30px}.intro{padding:22px 0 26px}.intro h1{font-size:27px;letter-spacing:0}.intro p{font-size:12px}.eyebrow{font-size:11px}.mobile-only{display:block}.section-heading h2{font-size:15px}.section-heading .meta{display:none}.library{padding-top:25px}.grades{gap:7px;grid-template-columns:repeat(3,1fr)}.grade{padding:7px}.grade b{font-size:24px}.grade span{font-size:12px}.library-tools{padding:16px 0}.categories{gap:4px}.categories button{font-size:12px;padding:7px 10px}.topics{gap:12px;grid-template-columns:1fr}.topic-card{min-height:170px;padding:17px 19px 0}.card-top{margin-bottom:10px}.topic-card h4{font-size:17px}.topic-card p{margin-bottom:14px}.card-foot{padding:11px 0}.howto{grid-template-columns:1fr;gap:19px;margin-top:30px;padding-top:20px}.howto p{font-size:12px}.dialog-body{grid-template-columns:1fr}.preview-side{display:none}dialog{width:calc(100% - 20px);max-height:94dvh;border-radius:12px}.dialog-top h2{font-size:18px}.dialog-top{padding:18px}.download-side{padding:23px}.download-block h3{font-size:18px}.download-block p,.field-label,.button{font-size:14px}.download-block .small-note{font-size:11px!important}.guide-dialog ol{font-size:14px}footer p{font-size:11px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Readable supporting text, including touch-sized controls. */
.intro p{font-size:16px}.topic-card p{font-size:14px}.categories button,.guide-button{font-size:14px}.card-foot,.subject,.card-code{font-size:12px}.card-action{font-size:14px}.download-block p,.field-label,.button{font-size:14px}.presets button{font-size:12px}.meta{font-size:13px}.howto p{font-size:14px}.preview-caption{font-size:12px}.topic-card{min-height:230px}@media(max-width:680px){.intro p{font-size:14px}.categories button{font-size:14px}.topic-card{min-height:195px}.brand small{font-size:10px}}

@media(max-width:680px){.presets{display:grid;grid-template-columns:repeat(3,1fr)}.presets button{white-space:nowrap;min-height:36px}}