body { font-family: "Hiragino Kaku Gothic ProN", Meiryo, sans-serif; background-color: #d0f0f8; color: #222; line-height: 1.9; max-width: 780px; margin: 3em auto; padding: 2.5em; box-shadow: 0 0 15px rgba(0, 128, 192, 0.2); border-radius: 12px; } h1 { font-size: 1.8em; margin-bottom: 0.8em; border-b…
