:root{--xz-primary: #1a5f7a;--xz-primary-light: #2d8ba8;--xz-bg: #f4f7f9;--xz-card: #ffffff;--xz-text: #1e293b;--xz-muted: #64748b;--xz-border: #e2e8f0;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--xz-bg);color:var(--xz-text);min-height:100vh}a{color:var(--xz-primary-light);text-decoration:none}button{cursor:pointer;border:none;border-radius:8px;padding:10px 18px;font-size:14px;background:var(--xz-primary);color:#fff}button:hover{background:var(--xz-primary-light)}button.secondary{background:#fff;color:var(--xz-primary);border:1px solid var(--xz-border)}input,textarea,select{width:100%;padding:10px 12px;border:1px solid var(--xz-border);border-radius:8px;font-size:14px}.card{background:var(--xz-card);border-radius:12px;padding:20px;box-shadow:0 1px 3px #0000000f}