:root{--bg:#f4f6f8;--surface:#fff;--ink:#101820;--muted:#68727d;--line:#dfe4e8;--accent:#171f27;--soft:#e9edf0;--radius:22px;--shadow:0 18px 50px rgba(16,24,32,.08)}*{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:var(--bg);line-height:1.5}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{width:min(1180px,calc(100% - 32px));margin:18px auto 0;display:flex;align-items:center;justify-content:space-between;padding:14px 18px;background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:18px;position:sticky;top:12px;z-index:20;backdrop-filter:blur(16px)}.brand{display:inline-flex;align-items:center;gap:10px}.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--ink);color:#fff;font-weight:800}.brand span:last-child{display:grid;line-height:1.05}.brand small{font-size:.7rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-top:4px}.main-nav{display:flex;gap:24px;color:#424b54}.main-nav a:hover{color:#000}.menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px}.hero{width:min(1180px,calc(100% - 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