:root{--ink:#172d3c;--muted:#5b6d79;--blue:#176b83;--line:#dce5e8;--paper:#fff;--bg:#f2f6f5;--green:#256148;--amber:#845510}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 system-ui,-apple-system,Segoe UI,sans-serif}header{background:#132f3b;color:white;display:flex;justify-content:space-between;align-items:center;padding:22px max(24px,calc((100vw - 1380px)/2));gap:16px}.brand{display:flex;align-items:center;gap:12px}.brand strong{font-size:22px;letter-spacing:-.5px}.brand small{display:block;color:#bdd2da;font-size:12px}.mark{width:40px;height:40px;border:1px solid #809ba5;border-radius:12px;display:grid;place-items:center;font:24px Georgia,serif}.demo{font-size:10px;letter-spacing:1.3px;background:#294550;border:1px solid #52707a;padding:7px 11px;border-radius:20px}main{max-width:1380px;margin:auto;padding:32px 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