:root{color-scheme:light dark;--bg:#f3f5f4;--card:#fff;--ink:#182d2b;--muted:#61716f;--line:#dce4e1;--accent:#176954;--soft:#eaf4ef;--input:#fff;--focus:#268570}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea{font:inherit}a{color:inherit}.topbar{min-height:84px;background:var(--card);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px max(24px,calc((100vw - 1180px)/2))}.brand{display:flex;align-items:center;gap:13px;text-decoration:none}.brand strong{font-size:24px;letter-spacing:-1px}.brand-icon,.avatar{display:grid;place-items:center;background:var(--accent);color:white;border-radius:12px;width:40px;height:40px;font-size:25px}.brand-sub{color:var(--muted);border-left:1px solid var(--line);padding-left:16px;margin-left:3px;font-size:14px}main{max-width:1180px;margin:auto;padding:38px 24px 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