:root{--background:#f7faf9;--ink:#111827;--muted:#5f6b7a;--line:#dce7e3;--brand:#0f766e;--brand-dark:#115e59;--accent:#f59e0b;--panel:#fff;--tool-bg:#fff;--tool-panel:#f7faf9;--tool-line:#dce7e3;--tool-muted:#5f6b7a;--tool-ink:#111827;--tool-green:#16a34a}*{box-sizing:border-box}body{background:var(--background);color:var(--ink);margin:0;font-family:Arial,Helvetica,sans-serif}button,select,textarea{font:inherit}a{color:inherit;text-decoration:none}.page{min-height:100vh}.shell{width:min(1180px,100% - 32px);margin:0 auto}.nav{justify-content:space-between;align-items:center;padding:22px 0;display:flex}.brand{letter-spacing:0;align-items:center;gap:10px;font-weight:800;display:flex}.brand-mark{object-fit:contain;border-radius:8px;width:36px;height:36px;display:block}.nav-links{color:var(--muted);gap:22px;font-size:14px;display:flex}.hero{padding:24px 0 44px}.hero-copy{text-align:center;max-width:880px;margin:0 auto 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