:root{color-scheme:light}*{box-sizing:border-box}body,html{padding:0;margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;background:#fff;color:#0a0a0a}a{color:inherit;text-decoration:none}.container{max-width:960px;margin:0 auto;padding:24px}.card{border:1px solid rgba(0,0,0,.12);border-radius:16px;padding:20px}.muted{color:rgba(0,0,0,.6)}.button{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 18px;border-radius:12px;border:1px solid rgba(0,0,0,.14);background:#0a0a0a;color:#fff;font-weight:600}.button.secondary{background:#fff;color:#0a0a0a}.row{display:flex;gap:12px;flex-wrap:wrap}