:root{--bg:#f5f6f2;--card:#fff;--card-2:#fbfcf9;--line:#e6e9e0;--line-2:#eef1ea;--ink:#1f241d;--sub:#5c6358;--muted:#969c8d;--verdy:#2f9e44;--verdy-d:#1f7a33;--verdy-bg:#eef6ee;--verdy-tx:#245c2c;--shadow-sm:0 1px 2px #1c26160a,0 1px 3px #1c261608;--shadow:0 4px 16px #1c26160f,0 1px 3px #1c26160a;--radius:14px;--radius-lg:18px;--serif:"Fraunces",Georgia,"Times New Roman",serif;--sans:-apple-system,"Segoe UI","Hiragino Sans","Noto Sans JP",sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#14160f;--card:#1d201a;--card-2:#191c15;--line:#2d322a;--line-2:#262a22;--ink:#eef1e7;--sub:#b3bbaa;--muted:#8b9184;--verdy-bg:#1b3324;--verdy-tx:#9fd6ab;--shadow-sm:0 1px 2px #0000004d;--shadow:0 6px 20px #00000059}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{font-family:var(--sans);background:var(--bg);color:var(--ink);letter-spacing:.01em;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;line-height:1.75}a{color:inherit}::selection{background:var(--verdy-bg)}header.site{z-index:20;background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:saturate(1.4)blur(10px);border-bottom:1px solid var(--line);position:sticky;top:0}header.site .in{align-items:center;gap:18px;max-width:960px;margin:0 auto;padding:12px 18px;display:flex}.brand{align-items:center;gap:10px;text-decoration:none;display:flex}.brand .mark{background:var(--verdy);color:#fff;width:30px;height:30px;font-family:var(--serif);box-shadow:var(--shadow-sm);border-radius:9px;justify-content:center;align-items:center;font-size:17px;font-weight:600;display:flex}.brand .wm{font-family:var(--serif);letter-spacing:.005em;font-size:21px;font-weight:600;line-height:1}nav.main{flex-wrap:wrap;gap:2px;margin-left:auto;display:flex}nav.main a{color:var(--sub);white-space:nowrap;border-radius:999px;padding:7px 13px;font-size:13.5px;text-decoration:none;transition:background .15s,color .15s}nav.main a:hover{color:var(--ink);background:var(--line-2)}nav.main a.on{color:var(--verdy-d);background:var(--verdy-bg);font-weight:500}main.site{max-width:960px;margin:0 auto;padding:30px 18px 72px}footer.site{max-width:960px;color:var(--muted);border-top:1px solid var(--line);margin:0 auto;padding:26px 18px 40px;font-size:12px;line-height:1.9}footer.site b{color:var(--sub);font-family:var(--serif);letter-spacing:.01em;font-weight:600}footer.site a{color:var(--sub);text-underline-offset:2px}h1,h2,h3{letter-spacing:.005em}.oshinav{background:var(--verdy);color:#fff;vertical-align:middle;border-radius:999px;justify-content:center;align-items:center;min-width:16px;height:16px;margin-left:5px;padding:0 4px;font-size:10px;font-weight:700;line-height:1;display:inline-flex}.oshibtn{border:1.5px solid var(--verdy);background:var(--card);color:var(--verdy-d);cursor:pointer;border-radius:999px;align-items:center;gap:8px;padding:12px 22px;font-size:15px;font-weight:600;transition:background .15s,color .15s,transform .1s;display:inline-flex}.oshibtn [data-oshi-ico]{font-size:18px;line-height:1}.oshibtn:hover{background:var(--verdy-bg)}.oshibtn.on{background:var(--verdy);color:#fff;border-color:var(--verdy)}.oshibtn:active{transform:scale(.97)}.oshi-dot{border:1px solid var(--line);background:color-mix(in srgb,var(--card) 82%,transparent);backdrop-filter:blur(5px);width:32px;height:32px;color:var(--muted);cursor:pointer;z-index:2;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:16px;line-height:1;display:flex;position:absolute;top:8px;right:8px}.oshi-dot.on{color:#fff;background:var(--verdy);border-color:var(--verdy)}.oshi-dot:hover{border-color:var(--verdy);color:var(--verdy)}.oshi-dot.on:hover{color:#fff}.rbtn{color:var(--sub);background:var(--card-2);border:1px solid var(--line);cursor:pointer;border-radius:999px;align-items:center;gap:5px;padding:5px 12px;font-family:inherit;font-size:11.5px;font-weight:600;transition:background .12s,color .12s,border-color .12s;display:inline-flex}.rbtn:before{content:"🌿";font-size:12px}.rbtn:hover{border-color:var(--verdy);color:var(--verdy-d)}.rbtn.on{background:var(--verdy-bg);color:var(--verdy-tx);border-color:#c0dd97}.ract{margin-top:7px;display:block}@media (width<=560px){header.site .in{flex-wrap:wrap;gap:9px 8px;padding:11px 14px}.brand{flex:none}.brand .wm{font-size:19px}nav.main{flex-wrap:wrap;gap:6px;width:100%;margin-left:0}nav.main a{white-space:nowrap;padding:6px 11px;font-size:12.5px}main.site{padding:22px 16px 60px}}