:root{color-scheme:light dark;font-family:system-ui,"Microsoft YaHei",sans-serif;line-height:1.7;background:#faf8ff;color:#171b29}body{margin:0;padding:24px}main{max-width:780px;margin:auto;padding:clamp(20px,5vw,40px);background:#fff;border-radius:20px;border:1px solid #dae2fd}a{color:#003fb1}h1{line-height:1.25}h2{font-size:1.2rem;margin-top:28px}.notice{padding:12px 16px;background:#eef2ff;border-radius:12px}label{display:block;margin:12px 0}input{font:inherit;padding:10px;border:1px solid #737686;border-radius:8px;max-width:100%;box-sizing:border-box}input:not([type=checkbox]){width:100%}button{font:inherit;border:0;border-radius:8px;padding:10px 18px;cursor:pointer;background:#003fb1;color:#fff;margin:8px 8px 8px 0}button:disabled{opacity:.5;cursor:default}.danger{background:#ba1a1a}[hidden]{display:none!important}:focus-visible{outline:3px solid #477bff;outline-offset:3px}@media(prefers-color-scheme:dark){:root{background:#11131d;color:#e4e7ef}main{background:#181c26;border-color:#434654}a{color:#b4c5ff}.notice{background:#282c37}input{background:#11131d;color:#fff}}