:root{--primary-cyan: #00b5d8;--primary-dark: #008ca8;--bg-gray: #f0f4f7;--white: #fff;--text-main: #333;--text-sub: #666;--border-color: #e0e0e0}body{font-family:"Hiragino Kaku Gothic ProN","Meiryo",sans-serif;margin:0;padding:0;background-color:var(--bg-gray);color:var(--text-main);line-height:1.8;font-size:14px}.wrapper{max-width:600px;margin:0 auto;background-color:var(--white);min-height:100vh;display:flex;flex-direction:column;box-shadow:0 0 20px rgba(0,0,0,.05)}header{background:var(--white);color:var(--primary-dark);text-align:center;padding:15px 0;font-weight:bold;font-size:14px;border-top:4px solid var(--primary-cyan);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100}.main-content{padding:30px 20px;flex:1}h1{font-size:22px;font-weight:bold;text-align:center;margin-bottom:30px;color:var(--text-main);position:relative;padding-bottom:10px}h1::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:var(--primary-cyan)}.terms-container{text-align:left}.terms-preamble{margin-bottom:30px}section{margin-bottom:30px}h2{font-size:16px;font-weight:bold;color:var(--primary-dark);background:#eafaff;padding:10px 15px;border-left:5px solid var(--primary-cyan);margin-bottom:15px;border-radius:0 4px 4px 0}p{margin-bottom:10px;color:#555;text-align:justify}ul,ol{padding-left:20px;margin-bottom:15px;color:#555}li{margin-bottom:8px}strong{color:#444}.terms-establishment-txt{margin-top:30px;font-size:12px;color:#888;text-align:right}.back-btn-area{text-align:center;margin-top:40px;padding-top:20px;border-top:1px solid var(--border-color)}.back-btn{display:inline-block;padding:12px 40px;background:#ccc;color:var(--white);text-decoration:none;border-radius:50px;font-weight:bold;transition:background .3s}.back-btn:hover{background:#bbb}footer{background:var(--bg-gray);color:var(--text-sub);padding:20px 15px;font-size:10px;text-align:center;border-top:1px solid var(--border-color)}