:root{--ink:#111318;--muted:#666b74;--soft:#f6f7f9;--line:#e5e7eb;--white:#fff;--accent:#315efb;--accent-soft:#eef2ff;--radius:14px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--white);color:var(--ink);font:15px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.topbar{height:68px;padding:0 clamp(22px,5vw,72px);display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.brand{font-size:17px;font-weight:750;letter-spacing:-.02em;color:var(--ink);text-decoration:none}.topbar nav{display:flex;gap:24px;align-items:center}.topbar nav a,.nav-button{color:#4d525b;text-decoration:none;background:none;border:0;font:inherit;cursor:pointer}.topbar nav a:hover,.nav-button:hover{color:var(--ink)}.home{max-width:1180px;margin:auto;padding:0 24px 100px}.intro{padding:clamp(76px,12vw,150px) 0 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