:root{--ink:#0f172a;--bg:#f8fafc;--panel:#fff;--accent:#0f766e;--accent-strong:#115e59;--muted:#334155;--line:#cbd5e1}*{box-sizing:border-box}body,html{margin:0;padding:0;background:radial-gradient(circle at top right,#e2e8f0 0,#f8fafc 45%);color:var(--ink);font-family:IBM Plex Sans,Segoe UI,sans-serif}a{color:var(--accent-strong);text-decoration:none}a:hover{text-decoration:underline}main{max-width:980px;margin:0 auto;padding:2rem 1rem 3rem}h1,h2,h3{font-family:Space Grotesk,Segoe UI,sans-serif;letter-spacing:-.02em}.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:1rem;box-shadow:0 12px 24px rgba(15,23,42,.06)}.grid{display:grid;grid-gap:1rem;gap:1rem}@media (min-width:860px){.grid.two{grid-template-columns:2fr 1fr}}.button{display:inline-block;border:0;border-radius:10px;background:var(--accent);color:#fff;font-weight:600;padding:.75rem 1rem}.button:hover{background:var(--accent-strong);text-decoration:none}.small{font-size:.92rem;color:var(--muted)}