:root{--font-sans:"IBM Plex Sans JP";--font-display:"Zen Kaku Gothic New";--ink:#1a1917;--muted:#6f6a61;--line:#e5e2da;--soft:#f4f4f1;--panel:#fff;--accent:#a65b32;--accent-rgb:166, 91, 50;--accent-strong:#864626;--accent-strong-rgb:134, 70, 38;--rose:#be123c;--sun:#b45309;--sky:#0f5e8a;--sky-rgb:15, 94, 138;--shadow:0 1px 2px #1a19170d, 0 10px 28px -12px #1a191729;--shadow-lg:0 24px 48px -18px #1a191747}*{box-sizing:border-box}html,body{min-height:100%;color:var(--ink);font-family:var(--font-sans), "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;-webkit-font-smoothing:antialiased;background:#f4f4f1;margin:0}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.app-shell{width:min(1240px,100%);margin:0 auto;padding:0 22px 48px;transition:color .32s,filter 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