:root{--ink:#17342b;--cream:#fffaf0;--line:#d9e4d9}*{box-sizing:border-box}body{color:var(--ink);background:radial-gradient(circle at 15% 10%,#e4f4da 0 12%,#0000 38%),radial-gradient(circle at 90% 20%,#fff0bd 0 10%,#0000 35%),#f8f3e6;margin:0;font-family:Hiragino Maru Gothic ProN,Yu Gothic,sans-serif}main{width:min(1160px,100% - 32px);margin:auto;padding:64px 0 28px}.hero{max-width:780px;margin-bottom:42px}.brand-logo{width:min(100%,360px);height:auto;margin:0 0 24px;display:block}h1{letter-spacing:-.055em;margin:0;font-size:clamp(2.8rem,7vw,6.2rem);line-height:.98}.lead{color:#52655e;max-width:650px;margin:24px 0 0;font-size:clamp(1rem,2vw,1.25rem);font-weight:700;line-height:1.9}.app-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.app-card{min-height:500px;color:inherit;border:1px solid #17342b1f;border-radius:34px;flex-direction:column;padding:28px;text-decoration:none;transition:transform .2s,box-shadow .2s;display:flex;box-shadow:0 10px #17342b1f,0 24px 50px #2e40331f}.app-card:hover{transform:translateY(-6px);box-shadow:0 16px #17342b1f,0 32px 60px #2e403329}.forest{background:#dff2d5}.tsumego{background:#fff9e8}.oekaki{background:#dceeff}.eyebrow{opacity:.7;min-height:44px;font-size:.82rem;font-weight:900}.logo-stage{background:#ffffff9e;border-radius:24px;place-items:center;height:190px;margin:14px 0;padding:14px;display:grid;overflow:hidden}.app-logo{object-fit:contain;width:100%;height:100%;display:block}.forest-logo{max-width:170px}.tsumego-logo{max-width:310px}.oekaki-logo{max-width:260px}h2{margin:4px 0 10px;font-size:clamp(1.5rem,3vw,2.2rem)}.app-card p{color:#52655e;margin:0;font-weight:700;line-height:1.75}.app-card .detail{color:#6a7a74;margin-top:8px;font-size:.88rem;line-height:1.65}.app-card strong{margin-top:auto;padding-top:24px;font-size:1rem}footer{color:#64736d;justify-content:space-between;padding:46px 6px 0;font-size:.85rem;font-weight:700;display:flex}footer a{color:inherit}@media (max-width:820px){main{padding-top:38px}.brand-logo{width:min(100%,290px)}.app-grid{grid-template-columns:1fr}.app-card{min-height:430px}.logo-stage{height:175px}}