:root{--bg:#f7f8f5;--surface:#fff;--ink:#1f2b2d;--muted:#536269;--brand:#006d68;--pale:#e8f3ef;--lime:#ddeca7;--line:#d9e2de;--warm:#9b4d00;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.7}a{color:var(--brand);text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}:focus-visible{outline-offset:3px;outline:3px solid #087d89}h1,h2,h3,p{margin-top:0}.topbar{background:var(--surface);border-bottom:1px solid var(--line)}.top-inner{justify-content:space-between;align-items:center;gap:14px;max-width:1180px;margin:auto;padding:18px 26px;display:flex}.brand{color:var(--ink);letter-spacing:-.5px;font-size:22px;font-weight:800}.brand 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