:root{--bg:#071018;--panel:#0d1923;--panel2:#101f2b;--line:#20313d;--text:#edf6f8;--muted:#8ca0aa;--cyan:#46d6c6;--blue:#5f9cff;--red:#ff6475;--amber:#f3bd56;--green:#43d39e}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:radial-gradient(circle at 75% 0,#102a34 0,transparent 28%),var(--bg);color:var(--text);font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif}body{display:flex}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}.sidebar{position:fixed;inset:0 auto 0 0;width:250px;padding:30px 22px;display:flex;flex-direction:column;border-right:1px solid var(--line);background:rgba(7,16,24,.92);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.brand{display:flex;gap:12px;align-items:center;margin-bottom:42px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#061016;font-weight:900}.brand 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