:root{--surface: #ffffff;--canvas: #f7f7f8;--ink: #111111;--muted: #535353;--rule: #cfcfd2;--rule-strong: #1b1b1b;--accent: #e4002b;--accent-dark: #b80022;--success: #187a3d;--warning: #8e4e00;--ease-out: cubic-bezier(.22, 1, .36, 1);font-family:Helvetica Neue,Arial,Microsoft YaHei,sans-serif;color:var(--ink);background:var(--canvas)}*{box-sizing:border-box}body{min-width:320px;margin:0;background:var(--canvas)}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}button:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.auth-shell{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(360px,.9fr);min-height:100vh;padding:28px;background:var(--canvas)}.auth-loading{place-items:center;grid-template-columns:1fr;align-content:center;gap:16px;color:var(--muted);font-size:14px}.auth-loading-mark{width:38px;height:38px;border:2px solid 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