:root{--ground: #eef1f5;--surface: #ffffff;--surface-2: #f6f8fa;--line: #d8dee6;--ink: #12181f;--ink-2: #45505d;--ink-3: #78838f;--focus: #1668b3;--focus-soft: #e3f0fa;--ok: #16794a;--ok-soft: #ecf5f0;--warn: #9a6600;--warn-soft: #fdf6e7;--crit: #b3261e;--crit-soft: #fbecea;--mono: "Cascadia Mono", Consolas, "Courier New", monospace}*{box-sizing:border-box}body{margin:0;background:var(--ground);color:var(--ink);font:14px/1.45 Segoe UI,system-ui,-apple-system,sans-serif}.top{display:flex;align-items:center;gap:24px;background:#10222f;color:#fff;padding:0 18px;height:48px;position:sticky;top:0;z-index:10}.brand{font-weight:700;letter-spacing:.06em}.brand span{color:#7fb3d9;font-weight:400}.brand-big{font-size:20px}.nav{display:flex;gap:2px;flex:1}.nav-tab{color:#b9c8d4;text-decoration:none;padding:0 14px;line-height:48px;border-bottom:3px solid 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