:root{--blue:#2864ed;--ink:#182d50;--muted:#7b8ba6;--line:#e5ebf4;--bg:#f4f7fc;--green:#15805d;--radius:13px}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font-family:"Microsoft YaHei UI","PingFang SC","Noto Sans CJK SC",sans-serif;font-size:14px}button,input,select,textarea{font:inherit}button{cursor:pointer;border:1px solid #dce5f3;border-radius:7px;background:white;padding:10px 15px;color:var(--ink);transition:background .15s,box-shadow .15s}button:hover{background:#f0f5ff;border-color:#b9cef9}button:disabled{cursor:default;opacity:.45}button.primary{background:var(--blue);color:white;border-color:var(--blue);box-shadow:0 3px 6px #2864ed15}button.primary:hover{background:#1f52cb}button.quiet{border-color:transparent;background:transparent;color:var(--muted)}input,select,textarea{border:1px solid #dfe7f3;background:#f9fbff;border-radius:7px;color:var(--ink);padding:11px 13px;outline:none}input:focus,textarea:focus,select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #2864ed12}button:focus-visible{outline:3px solid #8aaffe;outline-offset:3px}input::placeholder,textarea::placeholder{color:#98a5ba}h1,h2,h3,p{margin:0}h2{font-size:24px;letter-spacing:-.6px}h3{font-size:16px}p.muted{line-height:1.8}.muted{color:var(--muted)}.small{font-size:12px}.eyebrow{font-size:10px;letter-spacing:1.7px;color:#8b9ab1;font-weight:600}.dot{display:inline-block;width:6px;height:6px;background:#32a47c;border-radius:50%;flex-shrink:0}.brandmark{width:43px;height:43px;border-radius:12px;background:var(--blue);display:grid;place-items:center;color:white;font-size:23px;font-weight:bold}.brand{display:flex;align-items:center;gap:13px}.brand h1{font-size:21px;letter-spacing:-.5px}.brand p{font-size:11px;color:var(--muted);margin-top:4px}.edition{font-size:9px;letter-spacing:1px;color:#7b98cf;font-weight:500;margin-left:7px;vertical-align:middle}header{height:88px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 30px;gap:20px}.header-actions{display:flex;gap:12px;align-items:center}.connection{color:var(--green);display:flex;align-items:center;gap:7px;font-size:12px;margin-right:12px}.workspace{display:grid;grid-template-columns:250px minmax(0,1fr);gap:26px;padding:26px 28px;max-width:1800px;margin:auto;min-height:calc(100vh - 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