* {
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Arial', sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f5f5f5;
            display: flex;
            flex-direction: column;
            align-items: center;
            -webkit-text-size-adjust: 100%;
        }
        
        #coner {
            margin-top:-50px;
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
            background-color: white;
            box-shadow: 0 0 10px rgba(0,0,0,0.1);
            position: relative;
            overflow: hidden;
           
            margin-top: 0px;
        }
        #mainheader {
            margin-top: 25em;
        }
        header {
            background: linear-gradient(135deg, #87CEEB 0%, #1E90FF 100%);
            color: white;
            padding: 2px;
            text-align: center;
        }
        .foot {
            background: blue;
            color: white;
            padding: 5px;
            text-align: center;
        }
        
        .headerBox, .footerBox {
            font-size: 16px;
            margin-bottom: 8px;
        }
        
        .box {
            position: relative;
            min-height: 500px;
            padding-bottom: 20px;
        }
        
        .bg-image {
            width: 100%;
            position: absolute;
            top: 0;
            left: 0;
            z-index: 1;
            opacity: 0.2;
        }
        
        .p-title {
            position: relative;
            z-index: 2;
            text-align: center;
            font-size: 30px;
            font-weight: bold;
            padding: 40px 40px;
            color: #1E90FF;
            background-color: #f8f9fa;
        }
        
        .content-panel {
            position: relative;
            z-index: 10;
            width: 95%;
            margin: 0 auto;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            padding: 20px;
            margin-top: 20px;
            transition: all 0.3s ease;
            border: 1px solid #87CEEB;
        }
        
        .title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 15px;
            color: #1E90FF;
        }
        
        .con {
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 18px;
            color: #333;
        }
        
        .inpur {
            width: 100%;
            padding: 14px;
            border: 1px solid #87CEEB;
            border-radius: 4px;
            font-size: 16px;
            margin-bottom: 18px;
            box-sizing: border-box;
            -webkit-appearance: none;
        }
        
        .btu {
            background: blue;
            color: white;
            padding: 14px;
            text-align: center;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
            font-size: 16px;
            border: none;
            width: 100%;
            -webkit-tap-highlight-color: transparent;
        }
        
        .btu:hover {
            background: blue;
        }
        
        .btu.sha {
            background: blue;
        }
        
        .btu.sha:hover {
            background: blue;
        }
        
        .loading-gif {
            display: block;
            margin: 0 auto;
            width: 90%;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            padding: 10px 0;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .footer-links a {
            text-decoration: none;
            font-size: 12px;
            padding: 5px 0;
            color: #1E90FF;
        }
        
        .footer-links a:hover {
            text-decoration: underline;
            color: #87CEEB;
        }
        
        .hidden {
            display: none !important;
        }

        /* タッチターゲットの最小サイズ */
        a, button, .btu {
            min-height: 44px;
            line-height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* モバイル向けの追加スタイル */
        @media (max-width: 480px) {
            body {
                background-size: auto;
                margin-top: 0px;
            }
            
            #container {
                margin-top: -30px;
            }
            
             #mainheader {
                margin-top: 12em;
            }
            
            .headerBox, .footerBox {
                font-size: 16px;
            }
            
            .p-title {
                font-size: 18px;
                padding: 15px;
            }
            
            .content-panel {
                width: 92%;
                padding: 15px;
            }
            
            .title {
                font-size: 16px;
            }
            
            .con {
                font-size: 14px;
            }
        }