:root{--brand:#176b5b;--brand2:#0f5145;--bg:#f3f6f5;--line:#dfe7e4;--text:#19332e;--muted:#71817e;--danger:#c53b3b;--shadow:0 8px 28px rgba(25,51,46,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.55 system-ui,-apple-system,"Microsoft YaHei",sans-serif}button,input,select,textarea{font:inherit}.login{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(145deg,#e3f1ed,#f8faf9)}.login-card{width:min(400px,100%);background:#fff;border-radius:20px;padding:30px;box-shadow:var(--shadow)}.brand{display:flex;gap:12px;align-items:center;margin-bottom:26px}.brand-mark{width:46px;height:46px;border-radius:14px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:23px}.brand h1{font-size:21px;margin:0}.brand p{margin:2px 0;color:var(--muted)}label{display:block;font-weight:650;margin:13px 0 6px}.field{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;background:#fff;outline:none}.field:focus{border-color:var(--brand);box-shadow:0 0 0 3px #176b5b18}textarea.field{min-height:100px;resize:vertical}.btn{border:0;border-radius:10px;padding:10px 15px;cursor:pointer;font-weight:650;background:#e8eeec;color:var(--text)}.btn.primary{background:var(--brand);color:#fff}.btn.danger{background:#fbeaea;color:var(--danger)}.btn.full{width:100%;margin-top:18px}.demo{margin-top:18px;padding:12px;border-radius:10px;background:#f4f8f7;color:var(--muted);font-size:12px}.shell{min-height:100vh}.header{height:62px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 max(18px,calc((100vw - 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