:root{--teal:#009b9a;--dark:#172235;--paper:#fff;--bg:#eef3f7;--line:#d9e0e5}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:#252b33;font-family:Arial,Helvetica,sans-serif;line-height:1.65}
.page{width:min(100%,760px);min-height:100vh;margin:auto;background:var(--paper);box-shadow:0 0 18px rgba(0,0,0,.08)}
header{display:flex;align-items:center;justify-content:space-between;min-height:82px;padding:18px 28px;background:var(--teal);color:#fff}
.brand{color:#fff;font-weight:800;letter-spacing:1.2px;text-decoration:none}.back{color:#fff;text-decoration:none;border:1px solid rgba(255,255,255,.8);padding:7px 12px}
main{padding:44px 30px 60px}h1{margin:0 0 8px;color:var(--dark);font-size:38px;line-height:1.1}h2{margin:34px 0 8px;color:var(--dark);font-size:22px}
.updated{color:#66717d;margin:0 0 34px}.notice{padding:16px 18px;background:#edfafa;border-left:4px solid var(--teal)}
a{color:#007e82}ul{padding-left:22px}.contact-card{margin:18px 0;padding:20px;border:1px solid var(--line);background:#fafafa}
label{display:block;font-weight:700;margin:20px 0 6px}input,textarea{width:100%;padding:12px;border:1px solid #aeb7bf;font:inherit}textarea{min-height:130px;resize:vertical}
button{margin-top:18px;padding:12px 22px;border:0;background:var(--teal);color:#fff;font-weight:700;cursor:pointer}
.preference{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}
.preference h2{margin:0}.preference input{width:22px;height:22px;flex:0 0 auto}.status{display:none;margin-top:18px;color:#08745c;font-weight:700}
footer{padding:28px;background:var(--dark);color:#fff;text-align:center}footer a{color:#fff}
@media(max-width:520px){header{padding:16px 20px}main{padding:34px 20px 48px}h1{font-size:32px}}