:root{--ink:#0b1735;--muted:#64708a;--blue:#2456f5;--lime:#baf020;--soft:#f4f7ff;--line:#dce3f4;--white:#fff;--success:#168a55;--danger:#c53939}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fbfcff}button,input{font:inherit}.demo-bar{display:flex;justify-content:center;gap:18px;align-items:center;padding:9px 16px;background:var(--ink);color:#fff;font-size:13px}.demo-bar strong{color:var(--lime)}.nav{height:76px;max-width:1180px;margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:26px;font-weight:900;color:var(--ink);text-decoration:none}.brand span{color:var(--blue)}.brand small{font-size:10px;background:var(--lime);padding:4px 5px;border-radius:6px;margin-left:5px}.nav nav{display:flex;gap:30px}.nav nav 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