:root{--color-background:#0b0f14;--color-surface:#151b23;--color-border:#242c36;--color-text:#f5f7fa;--color-text-muted:#8b96a3;--color-accent:#3d8bff;--color-amber:#f5a623;--color-red:#ff4d6a}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--color-background);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}a{color:var(--color-accent)}.container{max-width:720px;margin:0 auto;padding:0 24px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:24px}.button{background:var(--color-accent);color:var(--color-background);cursor:pointer;border:none;border-radius:8px;padding:12px 24px;font-size:16px;font-weight:600;text-decoration:none;display:inline-block}.button:disabled{opacity:.6;cursor:default}.input{background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text);border-radius:8px;width:100%;padding:12px;font-family:inherit;font-size:16px}footer{border-top:1px solid var(--color-border);color:var(--color-text-muted);margin-top:48px;padding:24px 0;font-size:14px}footer a{margin-right:16px}