:root{--bg: #f7f6fb;--panel: #ffffff;--line: #e8e6f0;--txt: #1f1b2e;--muted: #6b6780;--brand: #6d5bd0;--brand-d: #5847b8;--brand-l: #efeaff;--ok: #1d9e75;--warn: #ba7517;--err: #c0436b;--radius: 14px;--radius-s: 10px;--shadow: 0 1px 2px rgba(31, 27, 46, .05), 0 6px 20px rgba(31, 27, 46, .06)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:var(--brand);text-decoration:none}a:hover{color:var(--brand-d)}h1,h2,h3{line-height:1.35;margin:0 0 .5em}h1{font-size:22px}h2{font-size:17px}h3{font-size:15px}p{margin:0 0 .8em}.page{min-height:100vh;display:flex;flex-direction:column}.container{width:100%;max-width:760px;margin:0 auto;padding:0 16px 48px;flex:1}.topbar{background:var(--panel);border-bottom:1px solid var(--line);padding:12px 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