@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700;800&display=swap');
:root{--green:#24634e;--ink:#263a32;--muted:#7c8781;--line:#e4e8e1}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fafbf7;color:var(--ink);font:14px 'Noto Sans JP',sans-serif}button,input,select{font:inherit}button,a,input,select{outline-offset:5px}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}aside{position:fixed;width:234px;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:35px 22px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;font-size:29px;color:var(--green)}.brand span{font-size:17px;font-weight:800}.brand small{display:block;font-size:8px;letter-spacing:1.6px;margin-top:5px;font-weight:500}.navlabel{font-size:10px;color:#939e97;letter-spacing:2px;margin:57px 16px 15px}.nav{display:block;text-align:left;background:none;border:0;padding:14px 15px;margin-bottom:8px;border-radius:6px;color:#68756d;font-size:13px}.nav.active{background:#eaf2e9;color:var(--green);font-weight:700}.sidebottom{margin-top:auto;font-size:10px;color:#8d978f;line-height:1.9}.tinylogo{display:inline-block;border:1px solid var(--line);padding:8px 11px;border-radius:8px;color:var(--green);font-size:17px}.sidebottom small{font-size:9px}.page{margin-left:234px}header{height:72px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 48px;font-size:11px;color:var(--muted)}header a{color:#426c58}main{max-width:1240px;margin:auto;padding:0 48px}.hero{display:grid;grid-template-columns:1.5fr 1fr;align-items:center;padding:52px 0 40px;gap:26px}.eyebrow{font-size:10px;color:var(--green);letter-spacing:1.7px;font-weight:700}.eyebrow i{display:inline-block;width:6px;height:6px;border-radius:50%;background:#719174;margin-right:7px}h1{font-size:clamp(29px,3vw,43px);line-height:1.65;letter-spacing:-1.5px;margin:18px 0}h1 span{color:var(--green)}.hero p{font-size:13px;color:#7b857e;line-height:2.05}.primary{background:var(--green);border:0;color:white;padding:15px 21px;border-radius:6px;font-size:12px;margin-top:13px}.primary b{margin-left:30px}.heronote{font-size:10px;display:block;color:#8a958b;margin-top:12px}.art{background:#f0f3e9;border:1px solid #e7ebde;border-radius:50% 50% 12px 12px;padding:28px 20px 22px;transform:rotate(-3deg);text-align:center;max-width:350px}.artlabel{font-size:9px;letter-spacing:3px;color:#8c9a80}.art svg{width:100%;font-family:monospace;font-size:24px;transform:rotate(3deg)}.artfoot{font-size:10px;letter-spacing:2px;color:#819075}.progress{display:flex;align-items:center;gap:17px;background:white;border:1px solid var(--line);border-radius:9px;padding:20px 23px}.progressicon{background:#edf3e8;color:var(--green);border-radius:50%;padding:12px;font-size:20px}.progress strong{font-size:12px}.progress p{font-size:10px;color:var(--muted);margin:6px 0 0}.progresstrack{margin-left:auto;width:30%;font-size:10px;color:var(--muted)}.track{background:#eef1e9;height:6px;border-radius:8px;margin-top:10px;overflow:hidden}.track i{display:block;height:100%;background:#5c8966}.percent{font-size:20px;font-weight:600;color:var(--green)}section[id]{scroll-margin-top:25px}.sectionheading{display:flex;justify-content:space-between;align-items:center;margin:36px 0 20px}h2{font-size:20px;margin:9px 0 0;letter-spacing:.3px}h2 span{font-size:11px;font-weight:400;color:var(--muted);margin-left:18px}.count{font:10px monospace;color:#94a08f;letter-spacing:1px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card{padding:21px;text-align:left;background:#fff;border:1px solid var(--line);border-radius:9px;position:relative;color:var(--ink);transition:transform .2s,border-color .2s}.card:hover{transform:translateY(-3px);border-color:#6f9278}.card.selected{border-color:var(--green);box-shadow:0 0 0 1px var(--green)}.cardtop{display:flex;justify-content:space-between;align-items:center}.cardicon{display:grid;place-items:center;height:37px;width:39px;border-radius:8px;font:22px monospace;color:var(--c);background:var(--bg)}.level{font-size:9px;color:#8b948b;background:#f6f7f3;padding:4px 7px;border-radius:4px}.card h3{font-size:16px;margin:16px 0 7px}.card p{font-size:11px;color:var(--muted);margin:0;line-height:1.9;min-height:42px}.cardfooter{border-top:1px solid #f0f1ec;display:flex;justify-content:space-between;margin-top:15px;padding-top:12px;font-size:10px;color:#8b958e}.cardfooter b{color:var(--c);font-weight:500}.textbutton{font-size:11px;color:var(--green);background:none;border:0}.filters{display:flex;gap:12px;align-items:center;margin-bottom:15px}.search{display:flex;gap:9px;align-items:center;background:white;border:1px solid var(--line);border-radius:5px;padding:9px 12px;min-width:285px;color:#879184}.search input{border:0;background:none;width:100%;font-size:11px;outline:none}select{border:1px solid var(--line);background:white;padding:10px;border-radius:5px;font-size:11px;color:#788379}#resultCount{margin-left:auto;font-size:10px;color:var(--muted)}.row{display:flex;align-items:center;gap:16px;padding:18px 20px;border:1px solid var(--line);border-bottom:0;background:white}.row:first-child{border-radius:8px 8px 0 0}.row:last-child{border-bottom:1px solid var(--line);border-radius:0 0 8px 8px}.row input{accent-color:var(--green);width:17px;height:17px;cursor:pointer}.problemname{flex:1}.problemname small{font:10px monospace;color:#879185}.problemname a{font-size:13px;font-weight:600;display:block;margin-top:5px}.tag{font-size:10px;color:#62805c;background:#eff4e9;padding:5px 9px;border-radius:4px}.hint{font-size:10px;color:#7d8a7d;background:none;border:1px solid var(--line);border-radius:5px;padding:7px 10px}.row.done .problemname a{color:#8c9d8e}.empty{padding:35px;text-align:center;color:var(--muted);background:white;border:1px solid var(--line)}.bottomnote{margin-top:28px;background:#f1f3e9;border-radius:7px;padding:18px 22px;font-size:11px;display:flex;gap:22px}.bottomnote span{color:#87917e}footer{display:flex;justify-content:space-between;padding:30px 0;font-size:9px;color:#98a194}footer span:first-child{font-weight:700;color:#6e8674}dialog{border:1px solid var(--line);border-radius:14px;max-width:570px;width:90%;padding:35px;color:var(--ink);box-shadow:0 20px 100px #142e3230}dialog::backdrop{background:#193b3260;backdrop-filter:blur(3px)}dialog h2{margin-bottom:18px}dialog p{line-height:2;color:#6a7d70;font-size:13px}dialog a{display:inline-block;color:var(--green);margin-top:10px}#close{position:absolute;right:15px;top:10px;border:0;background:none;font-size:26px;color:#819184}.steps{padding:0;list-style:none}.steps li{padding:14px 0;border-bottom:1px solid var(--line);font-size:13px}.steps small{display:block;color:var(--muted);margin:6px 0 0 27px}@media(min-width:1500px){.hero{padding-top:65px;padding-bottom:50px}}@media(max-width:1100px){aside{width:200px;padding:30px 16px}.page{margin-left:200px}main{padding:0 26px}header{padding:0 26px}h2 span{display:block;margin:8px 0 0}.hero{gap:10px}.heronote{display:none}.cards{gap:10px}.card{padding:16px}.bottomnote{display:block}.bottomnote span{display:block;margin-top:8px}}@media(max-width:760px){aside{position:static;width:auto;padding:18px 20px;display:block;border-bottom:1px solid var(--line)}.brand{font-size:24px}.brand small{display:none}.navlabel,.sidebottom,aside .nav{display:none}.page{margin:0}header{height:48px;padding:0 20px;font-size:10px}main{padding:0 20px}.hero{padding:32px 0;grid-template-columns:1fr}.art{display:none}h1{font-size:32px}.hero p{font-size:12px}.cards{grid-template-columns:repeat(2,1fr)}.progress{padding:16px 12px;gap:9px}.progress p{display:none}.progressicon{padding:7px}.progresstrack{width:26%}.percent{font-size:16px}.count{display:none}.filters{flex-wrap:wrap}.search{min-width:100%;}h2{font-size:18px}.row{gap:9px;padding:15px 9px}.tag{display:none}.problemname a{font-size:12px}.hint{padding:7px}.sectionheading{gap:10px}.textbutton{max-width:105px}footer{gap:20px;line-height:1.8}footer span:last-child{max-width:60%}}

.random-button{border:1px solid #24634e;background:#edf3e8;color:#24634e;border-radius:5px;padding:10px 12px;font-size:11px;white-space:nowrap}.filters{flex-wrap:wrap}.random-pick{padding:20px;background:#f0f3e9;border-radius:9px;margin:20px 0}.random-pick small{font-family:monospace;color:#6e8674}.random-pick h3{font-size:21px;margin:12px 0}.random-pick span{font-size:12px;color:#628061}dialog .random-link{color:white;margin:0}.reroll{margin:12px 0 0 12px;padding:13px}@media(max-width:760px){.reroll{margin-left:0;display:block}}

.ac-panel{margin:0 0 20px;padding:24px;border:1px solid #dbe5d6;background:#fff;border-radius:9px}.ac-panel h2{font-size:19px}.ac-panel p{color:#77857a;font-size:12px;line-height:1.9}.ac-panel small{display:block;color:#879185;font-size:10px;line-height:1.8}.ac-panel label{display:block;font-size:11px;margin:14px 0 8px}.ac-actions{display:flex;gap:10px;flex-wrap:wrap}.ac-actions input{border:1px solid #dbe5d6;padding:10px;border-radius:5px;min-width:0;width:220px}.ac-badge{font:700 10px monospace;background:#e6f3e7;color:#24634e;padding:5px 7px;border-radius:4px}button:disabled{opacity:.55;cursor:wait}[hidden]{display:none!important}